thread.cc revision 760172c3ccd6e75f6f1a89d8006934e8ffb1303e
18d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes/* 28d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes * Copyright (C) 2011 The Android Open Source Project 38d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes * 48d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes * Licensed under the Apache License, Version 2.0 (the "License"); 58d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes * you may not use this file except in compliance with the License. 68d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes * You may obtain a copy of the License at 78d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes * 88d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes * http://www.apache.org/licenses/LICENSE-2.0 98d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes * 108d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes * Unless required by applicable law or agreed to in writing, software 118d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes * distributed under the License is distributed on an "AS IS" BASIS, 128d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 138d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes * See the License for the specific language governing permissions and 148d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes * limitations under the License. 158d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes */ 16b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 17752a0e606afdc7aa4825ebbe62b187b8abba14ccMathieu Chartier#define ATRACE_TAG ATRACE_TAG_DALVIK 18752a0e606afdc7aa4825ebbe62b187b8abba14ccMathieu Chartier 19578bbdc684db8ed68e9fedbc678669d27fa68b6eBrian Carlstrom#include "thread.h" 20b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 21752a0e606afdc7aa4825ebbe62b187b8abba14ccMathieu Chartier#include <cutils/trace.h> 22b033c75ebda80ac75f936366fe78d1edf5cec937Ian Rogers#include <pthread.h> 232acf36d8cfeb5ddb293904148aa70f25ef6d8845Elliott Hughes#include <signal.h> 24dbf05b722af99ba2fd2f4c4fc7eb6c3e9880e5d1Brian Carlstrom#include <sys/resource.h> 25dbf05b722af99ba2fd2f4c4fc7eb6c3e9880e5d1Brian Carlstrom#include <sys/time.h> 26a09576416788b916095739e43a16917e7948f3a4Elliott Hughes 27b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro#include <algorithm> 28dcc247493fd8fb243e335c3ec08e5e625896a47cElliott Hughes#include <bitset> 29eb4f614f2eb53b92ebd416fa418f550861655887Elliott Hughes#include <cerrno> 30a09576416788b916095739e43a16917e7948f3a4Elliott Hughes#include <iostream> 31b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro#include <list> 32b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 33166db04e259ca51838c311891598664deeed85adIan Rogers#include "arch/context.h" 3476b6167407c2b6f5d40ad895b2793a6b037f54b2Elliott Hughes#include "base/mutex.h" 352dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers#include "class_linker-inl.h" 3622d5e735f403c57525fe868304c7123f0ce66399Ian Rogers#include "class_linker.h" 3746e251bf7200cc06f5a9a82ee2030e650f5e1443Elliott Hughes#include "debugger.h" 384f6ad8ab428038129b2d0d6c40b7fd625cca15e1Ian Rogers#include "dex_file-inl.h" 397655f29fabc0a12765de828914a18314382e5a35Ian Rogers#include "entrypoints/entrypoint_utils.h" 40d889178ec78930538d9d6a66c3df9ee9afaffbb4Mathieu Chartier#include "entrypoints/quick/quick_alloc_entrypoints.h" 410c7abda482f53db3d153c073d1c7a145f84e0626Ian Rogers#include "gc_map.h" 421d54e73444e017d3a65234e0f193846f3e27472bIan Rogers#include "gc/accounting/card_table-inl.h" 43e63db27db913f1a88e2095a1ee8239b2bb9124e8Ian Rogers#include "gc/allocator/rosalloc.h" 441d54e73444e017d3a65234e0f193846f3e27472bIan Rogers#include "gc/heap.h" 451d54e73444e017d3a65234e0f193846f3e27472bIan Rogers#include "gc/space/space.h" 4622d5e735f403c57525fe868304c7123f0ce66399Ian Rogers#include "handle_scope-inl.h" 47eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier#include "handle_scope.h" 48c56057e40938c587a74984651a510e320a8cb4fdMathieu Chartier#include "indirect_reference_table-inl.h" 49c5f7c91ab89055cffb573fff7e06dbdd860bccedElliott Hughes#include "jni_internal.h" 50ea46f950e7a51585db293cd7f047de190a482414Brian Carlstrom#include "mirror/art_field-inl.h" 51ea46f950e7a51585db293cd7f047de190a482414Brian Carlstrom#include "mirror/art_method-inl.h" 522dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers#include "mirror/class_loader.h" 5322d5e735f403c57525fe868304c7123f0ce66399Ian Rogers#include "mirror/class-inl.h" 542dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers#include "mirror/object_array-inl.h" 552dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers#include "mirror/stack_trace_element.h" 568e4aac52962d54cb4be2078b9cd95685e067133aElliott Hughes#include "monitor.h" 5722d5e735f403c57525fe868304c7123f0ce66399Ian Rogers#include "object_lock.h" 58fd3077e4b9ebadd281777310d26e64443858f653Sebastien Hertz#include "quick_exception_handler.h" 597624d25dad2d1ba25969ae704fccf68649103ae5Vladimir Marko#include "quick/quick_method_frame_info.h" 609a6bae896a2f003d7216603bf29771d105c10ca4Jesse Wilson#include "reflection.h" 61578bbdc684db8ed68e9fedbc678669d27fa68b6eBrian Carlstrom#include "runtime.h" 6200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers#include "scoped_thread_state_change.h" 6346e251bf7200cc06f5a9a82ee2030e650f5e1443Elliott Hughes#include "ScopedLocalRef.h" 643c539ffccabada93c404c0dfba8b52926ae06d0cAnwar Ghuloum#include "ScopedUtfChars.h" 6568e76526e98432625464022cb26f66b9ef6f5af4Elliott Hughes#include "stack.h" 668daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes#include "thread_list.h" 6722d5e735f403c57525fe868304c7123f0ce66399Ian Rogers#include "thread-inl.h" 68a09576416788b916095739e43a16917e7948f3a4Elliott Hughes#include "utils.h" 69ce4cc0d1818e872c1c7f3c3519a82259afd5c288TDYa#include "verifier/dex_gc_map.h" 704e30541a92381fb280cd0be9a1763b713ee4d64cMathieu Chartier#include "verify_object-inl.h" 711809a72a66d245ae598582d658b93a24ac3bf01eIan Rogers#include "vmap_table.h" 72eac766769e3114a078c188ea26776a81f0edb3cfElliott Hughes#include "well_known_classes.h" 73b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 74b557353b22c728eecbd1c68593b482622c7782a8Carl Shapironamespace art { 75b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 760878d654e7be8c9666579e22522704d8887415ccIan Rogersbool Thread::is_started_ = false; 77b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiropthread_key_t Thread::pthread_key_self_; 780aded089f565008ba5908e395e5914ca4f91f2deDave AllisonConditionVariable* Thread::resume_cond_ = nullptr; 7903c9785a8a6d712775cf406c4371d0227c44148fDave Allisonconst size_t Thread::kStackOverflowImplicitCheckSize = GetStackOverflowReservedBytes(kRuntimeISA); 80b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 817dc5166ea740359d381097a7ab382c1dd404055fElliott Hughesstatic const char* kThreadNameDuringStartup = "<native thread without managed peer>"; 827dc5166ea740359d381097a7ab382c1dd404055fElliott Hughes 835d76c435082332ef79a22962386fa92a0870e378Ian Rogersvoid Thread::InitCardTable() { 84dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.card_table = Runtime::Current()->GetHeap()->GetCardTable()->GetBiasedBegin(); 855d76c435082332ef79a22962386fa92a0870e378Ian Rogers} 865d76c435082332ef79a22962386fa92a0870e378Ian Rogers 873ea0f42467790809fcfc9fc861605d465808090fElliott Hughesstatic void UnimplementedEntryPoint() { 883ea0f42467790809fcfc9fc861605d465808090fElliott Hughes UNIMPLEMENTED(FATAL); 893ea0f42467790809fcfc9fc861605d465808090fElliott Hughes} 903ea0f42467790809fcfc9fc861605d465808090fElliott Hughes 91848871b4d8481229c32e0d048a9856e5a9a17ef9Ian Rogersvoid InitEntryPoints(InterpreterEntryPoints* ipoints, JniEntryPoints* jpoints, 92848871b4d8481229c32e0d048a9856e5a9a17ef9Ian Rogers PortableEntryPoints* ppoints, QuickEntryPoints* qpoints); 937655f29fabc0a12765de828914a18314382e5a35Ian Rogers 94848871b4d8481229c32e0d048a9856e5a9a17ef9Ian Rogersvoid Thread::InitTlsEntryPoints() { 953ea0f42467790809fcfc9fc861605d465808090fElliott Hughes // Insert a placeholder so we can easily tell if we call an unimplemented entry point. 96dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers uintptr_t* begin = reinterpret_cast<uintptr_t*>(&tlsPtr_.interpreter_entrypoints); 97dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers uintptr_t* end = reinterpret_cast<uintptr_t*>(reinterpret_cast<uint8_t*>(begin) + 98dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers sizeof(tlsPtr_.quick_entrypoints)); 997655f29fabc0a12765de828914a18314382e5a35Ian Rogers for (uintptr_t* it = begin; it != end; ++it) { 1007655f29fabc0a12765de828914a18314382e5a35Ian Rogers *it = reinterpret_cast<uintptr_t>(UnimplementedEntryPoint); 1017655f29fabc0a12765de828914a18314382e5a35Ian Rogers } 102dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers InitEntryPoints(&tlsPtr_.interpreter_entrypoints, &tlsPtr_.jni_entrypoints, 103dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers &tlsPtr_.portable_entrypoints, &tlsPtr_.quick_entrypoints); 104c0f0933249cf516b37717faa766e1e9808f7c1f8Elliott Hughes} 105c0f0933249cf516b37717faa766e1e9808f7c1f8Elliott Hughes 1063b4c18933c24b8a33f38573c2ebcdb9aa16efeb5Hiroshi Yamauchivoid Thread::ResetQuickAllocEntryPointsForThread() { 107dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers ResetQuickAllocEntryPoints(&tlsPtr_.quick_entrypoints); 1083b4c18933c24b8a33f38573c2ebcdb9aa16efeb5Hiroshi Yamauchi} 1093b4c18933c24b8a33f38573c2ebcdb9aa16efeb5Hiroshi Yamauchi 11062d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogersvoid Thread::SetDeoptimizationShadowFrame(ShadowFrame* sf) { 111dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.deoptimization_shadow_frame = sf; 1123ea4ec5629613013ad9b0d7a69abdb94491ac46fbuzbee} 1133ea4ec5629613013ad9b0d7a69abdb94491ac46fbuzbee 11462d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogersvoid Thread::SetDeoptimizationReturnValue(const JValue& ret_val) { 115dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tls64_.deoptimization_return_value.SetJ(ret_val.GetJ()); 116306057fd278d75bf3794bd5243a3b6652c487d18Ian Rogers} 117306057fd278d75bf3794bd5243a3b6652c487d18Ian Rogers 118306057fd278d75bf3794bd5243a3b6652c487d18Ian RogersShadowFrame* Thread::GetAndClearDeoptimizationShadowFrame(JValue* ret_val) { 119dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers ShadowFrame* sf = tlsPtr_.deoptimization_shadow_frame; 120dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.deoptimization_shadow_frame = nullptr; 121dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers ret_val->SetJ(tls64_.deoptimization_return_value.GetJ()); 122306057fd278d75bf3794bd5243a3b6652c487d18Ian Rogers return sf; 123306057fd278d75bf3794bd5243a3b6652c487d18Ian Rogers} 124306057fd278d75bf3794bd5243a3b6652c487d18Ian Rogers 1252a0d4ec9532a89abe722e5babdfbb846ffaad721Andreas Gampevoid Thread::SetShadowFrameUnderConstruction(ShadowFrame* sf) { 1262a0d4ec9532a89abe722e5babdfbb846ffaad721Andreas Gampe sf->SetLink(tlsPtr_.shadow_frame_under_construction); 1272a0d4ec9532a89abe722e5babdfbb846ffaad721Andreas Gampe tlsPtr_.shadow_frame_under_construction = sf; 1282a0d4ec9532a89abe722e5babdfbb846ffaad721Andreas Gampe} 1292a0d4ec9532a89abe722e5babdfbb846ffaad721Andreas Gampe 1302a0d4ec9532a89abe722e5babdfbb846ffaad721Andreas Gampevoid Thread::ClearShadowFrameUnderConstruction() { 1312a0d4ec9532a89abe722e5babdfbb846ffaad721Andreas Gampe CHECK_NE(static_cast<ShadowFrame*>(nullptr), tlsPtr_.shadow_frame_under_construction); 1322a0d4ec9532a89abe722e5babdfbb846ffaad721Andreas Gampe tlsPtr_.shadow_frame_under_construction = tlsPtr_.shadow_frame_under_construction->GetLink(); 1332a0d4ec9532a89abe722e5babdfbb846ffaad721Andreas Gampe} 1342a0d4ec9532a89abe722e5babdfbb846ffaad721Andreas Gampe 135caabb1b77b4a55eb1bb45ebcd3071c9ea01dd3cfBrian Carlstromvoid Thread::InitTid() { 136dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tls32_.tid = ::art::GetTid(); 137caabb1b77b4a55eb1bb45ebcd3071c9ea01dd3cfBrian Carlstrom} 138caabb1b77b4a55eb1bb45ebcd3071c9ea01dd3cfBrian Carlstrom 139caabb1b77b4a55eb1bb45ebcd3071c9ea01dd3cfBrian Carlstromvoid Thread::InitAfterFork() { 1408029cbe626a467b344ff84d86170d757aa12ecd4Elliott Hughes // One thread (us) survived the fork, but we have a new tid so we need to 1418029cbe626a467b344ff84d86170d757aa12ecd4Elliott Hughes // update the value stashed in this Thread*. 142caabb1b77b4a55eb1bb45ebcd3071c9ea01dd3cfBrian Carlstrom InitTid(); 143caabb1b77b4a55eb1bb45ebcd3071c9ea01dd3cfBrian Carlstrom} 144caabb1b77b4a55eb1bb45ebcd3071c9ea01dd3cfBrian Carlstrom 14578128a63b2615744760b7f8ab83df9764a5d4a95Brian Carlstromvoid* Thread::CreateCallback(void* arg) { 14693e74e8d879270071c3aa163f8495ada8d21f42fElliott Hughes Thread* self = reinterpret_cast<Thread*>(arg); 147120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers Runtime* runtime = Runtime::Current(); 1480aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (runtime == nullptr) { 149120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers LOG(ERROR) << "Thread attaching to non-existent runtime: " << *self; 1500aded089f565008ba5908e395e5914ca4f91f2deDave Allison return nullptr; 151120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers } 152120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers { 15350b35e2fd1a68cd1240e4a9d9f363e11764957d1Ian Rogers // TODO: pass self to MutexLock - requires self to equal Thread::Current(), which is only true 15450b35e2fd1a68cd1240e4a9d9f363e11764957d1Ian Rogers // after self->Init(). 1550aded089f565008ba5908e395e5914ca4f91f2deDave Allison MutexLock mu(nullptr, *Locks::runtime_shutdown_lock_); 156120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers // Check that if we got here we cannot be shutting down (as shutdown should never have started 157120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers // while threads are being born). 158590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier CHECK(!runtime->IsShuttingDownLocked()); 159120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers self->Init(runtime->GetThreadList(), runtime->GetJavaVM()); 160120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers Runtime::Current()->EndThreadBirth(); 161120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers } 16247179f76e3f03fe3eb21dfb081d50733ca316371Elliott Hughes { 16300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers ScopedObjectAccess soa(self); 164cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers 165cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers // Copy peer into self, deleting global reference when done. 166dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers CHECK(self->tlsPtr_.jpeer != nullptr); 167dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers self->tlsPtr_.opeer = soa.Decode<mirror::Object*>(self->tlsPtr_.jpeer); 168dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers self->GetJniEnv()->DeleteGlobalRef(self->tlsPtr_.jpeer); 169dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers self->tlsPtr_.jpeer = nullptr; 170eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier self->SetThreadName(self->GetThreadName(soa)->ToModifiedUtf8().c_str()); 171365c10235438607541fa2259a5fec48061b90bd8Ian Rogers Dbg::PostThreadStart(self); 17293e74e8d879270071c3aa163f8495ada8d21f42fElliott Hughes 173365c10235438607541fa2259a5fec48061b90bd8Ian Rogers // Invoke the 'run' method of our java.lang.Thread. 174dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers mirror::Object* receiver = self->tlsPtr_.opeer; 175365c10235438607541fa2259a5fec48061b90bd8Ian Rogers jmethodID mid = WellKnownClasses::java_lang_Thread_run; 17653b8b09fc80329539585dcf43657bc5f4ecefdffIan Rogers InvokeVirtualOrInterfaceWithJValues(soa, receiver, mid, nullptr); 177365c10235438607541fa2259a5fec48061b90bd8Ian Rogers } 17800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Detach and delete self. 17900f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers Runtime::Current()->GetThreadList()->Unregister(self); 18093e74e8d879270071c3aa163f8495ada8d21f42fElliott Hughes 1810aded089f565008ba5908e395e5914ca4f91f2deDave Allison return nullptr; 182b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro} 183b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 1842b7c4d196c8abe32f4ca633534917da9de53c359Mathieu ChartierThread* Thread::FromManagedThread(const ScopedObjectAccessAlreadyRunnable& soa, 1852dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers mirror::Object* thread_peer) { 186ea46f950e7a51585db293cd7f047de190a482414Brian Carlstrom mirror::ArtField* f = soa.DecodeField(WellKnownClasses::java_lang_Thread_nativePeer); 187ef7d42fca18c16fbaf103822ad16f23246e2905dIan Rogers Thread* result = reinterpret_cast<Thread*>(static_cast<uintptr_t>(f->GetLong(thread_peer))); 18800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Sanity check that if we have a result it is either suspended or we hold the thread_list_lock_ 18900f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // to stop it from going away. 19081d425b0b232962441616f8b14f73620bffef5e5Ian Rogers if (kIsDebugBuild) { 19181d425b0b232962441616f8b14f73620bffef5e5Ian Rogers MutexLock mu(soa.Self(), *Locks::thread_suspend_count_lock_); 1920aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (result != nullptr && !result->IsSuspended()) { 19381d425b0b232962441616f8b14f73620bffef5e5Ian Rogers Locks::thread_list_lock_->AssertHeld(soa.Self()); 19481d425b0b232962441616f8b14f73620bffef5e5Ian Rogers } 19500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 19600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers return result; 197761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes} 198761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes 1992b7c4d196c8abe32f4ca633534917da9de53c359Mathieu ChartierThread* Thread::FromManagedThread(const ScopedObjectAccessAlreadyRunnable& soa, 2002b7c4d196c8abe32f4ca633534917da9de53c359Mathieu Chartier jobject java_thread) { 2012dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers return FromManagedThread(soa, soa.Decode<mirror::Object*>(java_thread)); 20201158d7a57c8321370667a6045220237d16e0da8Elliott Hughes} 20301158d7a57c8321370667a6045220237d16e0da8Elliott Hughes 204ab7b9dcbfc4264a0bc4889c3e463ff88a67f6a30Elliott Hughesstatic size_t FixStackSize(size_t stack_size) { 2057502e2a419f84808518cf212b3d7145c7b959c76Elliott Hughes // A stack size of zero means "use the default". 206d369bb76dee0df2d2a106e9bf7f4e6446ed6deaaElliott Hughes if (stack_size == 0) { 207d369bb76dee0df2d2a106e9bf7f4e6446ed6deaaElliott Hughes stack_size = Runtime::Current()->GetDefaultStackSize(); 208d369bb76dee0df2d2a106e9bf7f4e6446ed6deaaElliott Hughes } 20961e019d291583029c01b61b93bea750f2b663c37Carl Shapiro 2106414a97a3c6dc101ae8ebc9480114d0c327e8e8dBrian Carlstrom // Dalvik used the bionic pthread default stack size for native threads, 2116414a97a3c6dc101ae8ebc9480114d0c327e8e8dBrian Carlstrom // so include that here to support apps that expect large native stacks. 2126414a97a3c6dc101ae8ebc9480114d0c327e8e8dBrian Carlstrom stack_size += 1 * MB; 2136414a97a3c6dc101ae8ebc9480114d0c327e8e8dBrian Carlstrom 2147502e2a419f84808518cf212b3d7145c7b959c76Elliott Hughes // It's not possible to request a stack smaller than the system-defined PTHREAD_STACK_MIN. 2157502e2a419f84808518cf212b3d7145c7b959c76Elliott Hughes if (stack_size < PTHREAD_STACK_MIN) { 2167502e2a419f84808518cf212b3d7145c7b959c76Elliott Hughes stack_size = PTHREAD_STACK_MIN; 2177502e2a419f84808518cf212b3d7145c7b959c76Elliott Hughes } 2187502e2a419f84808518cf212b3d7145c7b959c76Elliott Hughes 219f943914730db8ad2ff03d49a2cacd31885d08fd7Dave Allison if (Runtime::Current()->ExplicitStackOverflowChecks()) { 220f943914730db8ad2ff03d49a2cacd31885d08fd7Dave Allison // It's likely that callers are trying to ensure they have at least a certain amount of 221f943914730db8ad2ff03d49a2cacd31885d08fd7Dave Allison // stack space, so we should add our reserved space on top of what they requested, rather 222f943914730db8ad2ff03d49a2cacd31885d08fd7Dave Allison // than implicitly take it away from them. 2237ea6f79bbddd69d5db86a8656a31aaaf64ae2582Andreas Gampe stack_size += GetStackOverflowReservedBytes(kRuntimeISA); 224f943914730db8ad2ff03d49a2cacd31885d08fd7Dave Allison } else { 225f943914730db8ad2ff03d49a2cacd31885d08fd7Dave Allison // If we are going to use implicit stack checks, allocate space for the protected 226f943914730db8ad2ff03d49a2cacd31885d08fd7Dave Allison // region at the bottom of the stack. 22703c9785a8a6d712775cf406c4371d0227c44148fDave Allison stack_size += Thread::kStackOverflowImplicitCheckSize + 22803c9785a8a6d712775cf406c4371d0227c44148fDave Allison GetStackOverflowReservedBytes(kRuntimeISA); 229f943914730db8ad2ff03d49a2cacd31885d08fd7Dave Allison } 2307502e2a419f84808518cf212b3d7145c7b959c76Elliott Hughes 2317502e2a419f84808518cf212b3d7145c7b959c76Elliott Hughes // Some systems require the stack size to be a multiple of the system page size, so round up. 2327502e2a419f84808518cf212b3d7145c7b959c76Elliott Hughes stack_size = RoundUp(stack_size, kPageSize); 2337502e2a419f84808518cf212b3d7145c7b959c76Elliott Hughes 2347502e2a419f84808518cf212b3d7145c7b959c76Elliott Hughes return stack_size; 2357502e2a419f84808518cf212b3d7145c7b959c76Elliott Hughes} 2367502e2a419f84808518cf212b3d7145c7b959c76Elliott Hughes 23769dfe51b684dd9d510dbcb63295fe180f998efdeDave Allison// Global variable to prevent the compiler optimizing away the page reads for the stack. 23869dfe51b684dd9d510dbcb63295fe180f998efdeDave Allisonbyte dont_optimize_this; 23969dfe51b684dd9d510dbcb63295fe180f998efdeDave Allison 240f943914730db8ad2ff03d49a2cacd31885d08fd7Dave Allison// Install a protected region in the stack. This is used to trigger a SIGSEGV if a stack 24103c9785a8a6d712775cf406c4371d0227c44148fDave Allison// overflow is detected. It is located right below the stack_begin_. 24269dfe51b684dd9d510dbcb63295fe180f998efdeDave Allison// 24303c9785a8a6d712775cf406c4371d0227c44148fDave Allison// There is a little complexity here that deserves a special mention. On some 24403c9785a8a6d712775cf406c4371d0227c44148fDave Allison// architectures, the stack created using a VM_GROWSDOWN flag 24569dfe51b684dd9d510dbcb63295fe180f998efdeDave Allison// to prevent memory being allocated when it's not needed. This flag makes the 24669dfe51b684dd9d510dbcb63295fe180f998efdeDave Allison// kernel only allocate memory for the stack by growing down in memory. Because we 24769dfe51b684dd9d510dbcb63295fe180f998efdeDave Allison// want to put an mprotected region far away from that at the stack top, we need 24869dfe51b684dd9d510dbcb63295fe180f998efdeDave Allison// to make sure the pages for the stack are mapped in before we call mprotect. We do 24969dfe51b684dd9d510dbcb63295fe180f998efdeDave Allison// this by reading every page from the stack bottom (highest address) to the stack top. 25069dfe51b684dd9d510dbcb63295fe180f998efdeDave Allison// We then madvise this away. 25103c9785a8a6d712775cf406c4371d0227c44148fDave Allisonvoid Thread::InstallImplicitProtection() { 25203c9785a8a6d712775cf406c4371d0227c44148fDave Allison byte* pregion = tlsPtr_.stack_begin - kStackOverflowProtectedSize; 25303c9785a8a6d712775cf406c4371d0227c44148fDave Allison byte* stack_himem = tlsPtr_.stack_end; 25403c9785a8a6d712775cf406c4371d0227c44148fDave Allison byte* stack_top = reinterpret_cast<byte*>(reinterpret_cast<uintptr_t>(&stack_himem) & 25569dfe51b684dd9d510dbcb63295fe180f998efdeDave Allison ~(kPageSize - 1)); // Page containing current top of stack. 25669dfe51b684dd9d510dbcb63295fe180f998efdeDave Allison 25703c9785a8a6d712775cf406c4371d0227c44148fDave Allison // First remove the protection on the protected region as will want to read and 25803c9785a8a6d712775cf406c4371d0227c44148fDave Allison // write it. This may fail (on the first attempt when the stack is not mapped) 25903c9785a8a6d712775cf406c4371d0227c44148fDave Allison // but we ignore that. 26003c9785a8a6d712775cf406c4371d0227c44148fDave Allison UnprotectStack(); 261f943914730db8ad2ff03d49a2cacd31885d08fd7Dave Allison 26203c9785a8a6d712775cf406c4371d0227c44148fDave Allison // Map in the stack. This must be done by reading from the 26303c9785a8a6d712775cf406c4371d0227c44148fDave Allison // current stack pointer downwards as the stack may be mapped using VM_GROWSDOWN 26403c9785a8a6d712775cf406c4371d0227c44148fDave Allison // in the kernel. Any access more than a page below the current SP might cause 26503c9785a8a6d712775cf406c4371d0227c44148fDave Allison // a segv. 266f943914730db8ad2ff03d49a2cacd31885d08fd7Dave Allison 26703c9785a8a6d712775cf406c4371d0227c44148fDave Allison // Read every page from the high address to the low. 26803c9785a8a6d712775cf406c4371d0227c44148fDave Allison for (byte* p = stack_top; p >= pregion; p -= kPageSize) { 26903c9785a8a6d712775cf406c4371d0227c44148fDave Allison dont_optimize_this = *p; 270f943914730db8ad2ff03d49a2cacd31885d08fd7Dave Allison } 2715cd33753b96d92c03e3cb10cb802e68fb6ef2f21Dave Allison 272f943914730db8ad2ff03d49a2cacd31885d08fd7Dave Allison VLOG(threads) << "installing stack protected region at " << std::hex << 273f943914730db8ad2ff03d49a2cacd31885d08fd7Dave Allison static_cast<void*>(pregion) << " to " << 274f943914730db8ad2ff03d49a2cacd31885d08fd7Dave Allison static_cast<void*>(pregion + kStackOverflowProtectedSize - 1); 275f943914730db8ad2ff03d49a2cacd31885d08fd7Dave Allison 27603c9785a8a6d712775cf406c4371d0227c44148fDave Allison // Protect the bottom of the stack to prevent read/write to it. 27703c9785a8a6d712775cf406c4371d0227c44148fDave Allison ProtectStack(); 2785cd33753b96d92c03e3cb10cb802e68fb6ef2f21Dave Allison 2795cd33753b96d92c03e3cb10cb802e68fb6ef2f21Dave Allison // Tell the kernel that we won't be needing these pages any more. 28069dfe51b684dd9d510dbcb63295fe180f998efdeDave Allison // NB. madvise will probably write zeroes into the memory (on linux it does). 28103c9785a8a6d712775cf406c4371d0227c44148fDave Allison uint32_t unwanted_size = stack_top - pregion - kPageSize; 28203c9785a8a6d712775cf406c4371d0227c44148fDave Allison madvise(pregion, unwanted_size, MADV_DONTNEED); 283f943914730db8ad2ff03d49a2cacd31885d08fd7Dave Allison} 284f943914730db8ad2ff03d49a2cacd31885d08fd7Dave Allison 285120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogersvoid Thread::CreateNativeThread(JNIEnv* env, jobject java_peer, size_t stack_size, bool is_daemon) { 2860aded089f565008ba5908e395e5914ca4f91f2deDave Allison CHECK(java_peer != nullptr); 287120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers Thread* self = static_cast<JNIEnvExt*>(env)->self; 288120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers Runtime* runtime = Runtime::Current(); 289dbe6f4613ae0161b169f4fca8a616b0b393370abMathieu Chartier 290120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers // Atomically start the birth of the thread ensuring the runtime isn't shutting down. 291120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers bool thread_start_during_shutdown = false; 292365c10235438607541fa2259a5fec48061b90bd8Ian Rogers { 293120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers MutexLock mu(self, *Locks::runtime_shutdown_lock_); 294590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier if (runtime->IsShuttingDownLocked()) { 295120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers thread_start_during_shutdown = true; 296120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers } else { 297120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers runtime->StartThreadBirth(); 298120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers } 29900f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 300120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers if (thread_start_during_shutdown) { 301120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers ScopedLocalRef<jclass> error_class(env, env->FindClass("java/lang/InternalError")); 302120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers env->ThrowNew(error_class.get(), "Thread starting during runtime shutdown"); 303120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers return; 304120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers } 305120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers 306120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers Thread* child_thread = new Thread(is_daemon); 307120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers // Use global JNI ref to hold peer live while child thread starts. 308dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers child_thread->tlsPtr_.jpeer = env->NewGlobalRef(java_peer); 309120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers stack_size = FixStackSize(stack_size); 310120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers 3113c50a4b4ba6d7d9369ee9a0bd6d30bf4c9c79bb0Anwar Ghuloum // Thread.start is synchronized, so we know that nativePeer is 0, and know that we're not racing to 312120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers // assign it. 313ef7d42fca18c16fbaf103822ad16f23246e2905dIan Rogers env->SetLongField(java_peer, WellKnownClasses::java_lang_Thread_nativePeer, 314ef7d42fca18c16fbaf103822ad16f23246e2905dIan Rogers reinterpret_cast<jlong>(child_thread)); 31500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 31600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers pthread_t new_pthread; 31700f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers pthread_attr_t attr; 31800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers CHECK_PTHREAD_CALL(pthread_attr_init, (&attr), "new thread"); 31900f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers CHECK_PTHREAD_CALL(pthread_attr_setdetachstate, (&attr, PTHREAD_CREATE_DETACHED), "PTHREAD_CREATE_DETACHED"); 32000f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers CHECK_PTHREAD_CALL(pthread_attr_setstacksize, (&attr, stack_size), stack_size); 321120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers int pthread_create_result = pthread_create(&new_pthread, &attr, Thread::CreateCallback, child_thread); 32200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers CHECK_PTHREAD_CALL(pthread_attr_destroy, (&attr), "new thread"); 32300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 324120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers if (pthread_create_result != 0) { 32500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // pthread_create(3) failed, so clean up. 3269efc3e03982f042c3ce67cc2c64dbe0f0986119bBrian Carlstrom { 327120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers MutexLock mu(self, *Locks::runtime_shutdown_lock_); 328120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers runtime->EndThreadBirth(); 329120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers } 330120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers // Manually delete the global reference since Thread::Init will not have been run. 331dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers env->DeleteGlobalRef(child_thread->tlsPtr_.jpeer); 332dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers child_thread->tlsPtr_.jpeer = nullptr; 333120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers delete child_thread; 3340aded089f565008ba5908e395e5914ca4f91f2deDave Allison child_thread = nullptr; 335120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers // TODO: remove from thread group? 336ef7d42fca18c16fbaf103822ad16f23246e2905dIan Rogers env->SetLongField(java_peer, WellKnownClasses::java_lang_Thread_nativePeer, 0); 337120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers { 3389efc3e03982f042c3ce67cc2c64dbe0f0986119bBrian Carlstrom std::string msg(StringPrintf("pthread_create (%s stack) failed: %s", 3399efc3e03982f042c3ce67cc2c64dbe0f0986119bBrian Carlstrom PrettySize(stack_size).c_str(), strerror(pthread_create_result))); 340120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers ScopedObjectAccess soa(env); 341120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers soa.Self()->ThrowOutOfMemoryError(msg.c_str()); 3429efc3e03982f042c3ce67cc2c64dbe0f0986119bBrian Carlstrom } 343365c10235438607541fa2259a5fec48061b90bd8Ian Rogers } 34493e74e8d879270071c3aa163f8495ada8d21f42fElliott Hughes} 34561e019d291583029c01b61b93bea750f2b663c37Carl Shapiro 346120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogersvoid Thread::Init(ThreadList* thread_list, JavaVMExt* java_vm) { 347462c94449720e0dc6b93d7138d835d345ccf67aeElliott Hughes // This function does all the initialization that must be run by the native thread it applies to. 348462c94449720e0dc6b93d7138d835d345ccf67aeElliott Hughes // (When we create a new thread from managed code, we allocate the Thread* in Thread::Create so 349462c94449720e0dc6b93d7138d835d345ccf67aeElliott Hughes // we can handshake with the corresponding native thread when it's ready.) Check this native 350462c94449720e0dc6b93d7138d835d345ccf67aeElliott Hughes // thread hasn't been through here already... 3510aded089f565008ba5908e395e5914ca4f91f2deDave Allison CHECK(Thread::Current() == nullptr); 352d8af1592a97f7447ecf93f85098cb36340ab0fe2Elliott Hughes SetUpAlternateSignalStack(); 35393e74e8d879270071c3aa163f8495ada8d21f42fElliott Hughes InitCpu(); 354848871b4d8481229c32e0d048a9856e5a9a17ef9Ian Rogers InitTlsEntryPoints(); 355b373e091eac39b1a79c11f2dcbd610af01e9e8a9Dave Allison RemoveSuspendTrigger(); 3565d76c435082332ef79a22962386fa92a0870e378Ian Rogers InitCardTable(); 35701ae5808367e641a983e3f8bb82b3e0d364cd03eIan Rogers InitTid(); 358120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers // Set pthread_self_ ahead of pthread_setspecific, that makes Thread::Current function, this 359120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers // avoids pthread_self_ ever being invalid when discovered from Thread::Current(). 360dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.pthread_self = pthread_self(); 3610878d654e7be8c9666579e22522704d8887415ccIan Rogers CHECK(is_started_); 3626a607ad0902f3b8478e95d0b6b3e63a538571a3fElliott Hughes CHECK_PTHREAD_CALL(pthread_setspecific, (Thread::pthread_key_self_, this), "attach self"); 363120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers DCHECK_EQ(Thread::Current(), this); 364a5780dad67556297c8ca5f2608c53b193e6c4514Elliott Hughes 365dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tls32_.thin_lock_thread_id = thread_list->AllocThreadId(this); 366120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers InitStackHwm(); 3675fe594f576225dd7d333835e39c448a71ea9b433Elliott Hughes 368dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.jni_env = new JNIEnvExt(this, java_vm); 369120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers thread_list->Register(this); 37093e74e8d879270071c3aa163f8495ada8d21f42fElliott Hughes} 37193e74e8d879270071c3aa163f8495ada8d21f42fElliott Hughes 372664bebf92eb2151b9b570ccd42ac4b6056c3ea9cMathieu ChartierThread* Thread::Attach(const char* thread_name, bool as_daemon, jobject thread_group, 373664bebf92eb2151b9b570ccd42ac4b6056c3ea9cMathieu Chartier bool create_peer) { 374120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers Thread* self; 375120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers Runtime* runtime = Runtime::Current(); 3760aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (runtime == nullptr) { 377120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers LOG(ERROR) << "Thread attaching to non-existent runtime: " << thread_name; 3780aded089f565008ba5908e395e5914ca4f91f2deDave Allison return nullptr; 379120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers } 380120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers { 3810aded089f565008ba5908e395e5914ca4f91f2deDave Allison MutexLock mu(nullptr, *Locks::runtime_shutdown_lock_); 382590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier if (runtime->IsShuttingDownLocked()) { 383120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers LOG(ERROR) << "Thread attaching while runtime is shutting down: " << thread_name; 3840aded089f565008ba5908e395e5914ca4f91f2deDave Allison return nullptr; 385120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers } else { 386120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers Runtime::Current()->StartThreadBirth(); 387120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers self = new Thread(as_daemon); 388120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers self->Init(runtime->GetThreadList(), runtime->GetJavaVM()); 389120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers Runtime::Current()->EndThreadBirth(); 390120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers } 391120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers } 3925fe594f576225dd7d333835e39c448a71ea9b433Elliott Hughes 393dbe6f4613ae0161b169f4fca8a616b0b393370abMathieu Chartier CHECK_NE(self->GetState(), kRunnable); 394dbe6f4613ae0161b169f4fca8a616b0b393370abMathieu Chartier self->SetState(kNative); 395726079d3e2e50854cd6ca4c393f4529a796dba58Elliott Hughes 396cac6cc72c3331257fa6437b36a131e5d551e2f3cElliott Hughes // If we're the main thread, ClassLinker won't be created until after we're attached, 397cac6cc72c3331257fa6437b36a131e5d551e2f3cElliott Hughes // so that thread needs a two-stage attach. Regular threads don't need this hack. 398d9c67be7c116875d96b31e640ad47d587b205605Elliott Hughes // In the compiler, all threads need this hack, because no-one's going to be getting 399d9c67be7c116875d96b31e640ad47d587b205605Elliott Hughes // a native peer! 400664bebf92eb2151b9b570ccd42ac4b6056c3ea9cMathieu Chartier if (create_peer) { 401462c94449720e0dc6b93d7138d835d345ccf67aeElliott Hughes self->CreatePeer(thread_name, as_daemon, thread_group); 40206e3ad4a651c2c58dba5e865cd06d2f98462bf1dElliott Hughes } else { 40306e3ad4a651c2c58dba5e865cd06d2f98462bf1dElliott Hughes // These aren't necessary, but they improve diagnostics for unit tests & command-line tools. 4040aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (thread_name != nullptr) { 405dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers self->tlsPtr_.name->assign(thread_name); 40622869a9026a08b544eca4cefd67386d347e30d2cElliott Hughes ::art::SetThreadName(thread_name); 40722869a9026a08b544eca4cefd67386d347e30d2cElliott Hughes } 40836e0a955e48e9357bff1eab783e493107ebfff62Ian Rogers } 409cac6cc72c3331257fa6437b36a131e5d551e2f3cElliott Hughes 4105fe594f576225dd7d333835e39c448a71ea9b433Elliott Hughes return self; 4115fe594f576225dd7d333835e39c448a71ea9b433Elliott Hughes} 4125fe594f576225dd7d333835e39c448a71ea9b433Elliott Hughes 413365c10235438607541fa2259a5fec48061b90bd8Ian Rogersvoid Thread::CreatePeer(const char* name, bool as_daemon, jobject thread_group) { 414365c10235438607541fa2259a5fec48061b90bd8Ian Rogers Runtime* runtime = Runtime::Current(); 415365c10235438607541fa2259a5fec48061b90bd8Ian Rogers CHECK(runtime->IsStarted()); 416dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers JNIEnv* env = tlsPtr_.jni_env; 4175fe594f576225dd7d333835e39c448a71ea9b433Elliott Hughes 4180aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (thread_group == nullptr) { 419365c10235438607541fa2259a5fec48061b90bd8Ian Rogers thread_group = runtime->GetMainThreadGroup(); 420462c94449720e0dc6b93d7138d835d345ccf67aeElliott Hughes } 421726079d3e2e50854cd6ca4c393f4529a796dba58Elliott Hughes ScopedLocalRef<jobject> thread_name(env, env->NewStringUTF(name)); 4228daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes jint thread_priority = GetNativePriority(); 4235fe594f576225dd7d333835e39c448a71ea9b433Elliott Hughes jboolean thread_is_daemon = as_daemon; 4245fe594f576225dd7d333835e39c448a71ea9b433Elliott Hughes 425eac766769e3114a078c188ea26776a81f0edb3cfElliott Hughes ScopedLocalRef<jobject> peer(env, env->AllocObject(WellKnownClasses::java_lang_Thread)); 4260aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (peer.get() == nullptr) { 427dbe6f4613ae0161b169f4fca8a616b0b393370abMathieu Chartier CHECK(IsExceptionPending()); 428dbe6f4613ae0161b169f4fca8a616b0b393370abMathieu Chartier return; 4295d4bdc29737a693027daaf6ed3f0792368eb4baeIan Rogers } 430cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers { 431cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers ScopedObjectAccess soa(this); 432dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.opeer = soa.Decode<mirror::Object*>(peer.get()); 433cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers } 434eac766769e3114a078c188ea26776a81f0edb3cfElliott Hughes env->CallNonvirtualVoidMethod(peer.get(), 435eac766769e3114a078c188ea26776a81f0edb3cfElliott Hughes WellKnownClasses::java_lang_Thread, 436eac766769e3114a078c188ea26776a81f0edb3cfElliott Hughes WellKnownClasses::java_lang_Thread_init, 437365c10235438607541fa2259a5fec48061b90bd8Ian Rogers thread_group, thread_name.get(), thread_priority, thread_is_daemon); 43800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers AssertNoPendingException(); 439d369bb76dee0df2d2a106e9bf7f4e6446ed6deaaElliott Hughes 440120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers Thread* self = this; 441120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers DCHECK_EQ(self, Thread::Current()); 442dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers env->SetLongField(peer.get(), WellKnownClasses::java_lang_Thread_nativePeer, 443dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers reinterpret_cast<jlong>(self)); 444120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers 445120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers ScopedObjectAccess soa(self); 446eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier StackHandleScope<1> hs(self); 447eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier Handle<mirror::String> peer_thread_name(hs.NewHandle(GetThreadName(soa))); 448eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier if (peer_thread_name.Get() == nullptr) { 44900fae585c6e4a37b964c77f557fbf84f11e2d930Brian Carlstrom // The Thread constructor should have set the Thread.name to a 45000fae585c6e4a37b964c77f557fbf84f11e2d930Brian Carlstrom // non-null value. However, because we can run without code 45100fae585c6e4a37b964c77f557fbf84f11e2d930Brian Carlstrom // available (in the compiler, in tests), we manually assign the 45200fae585c6e4a37b964c77f557fbf84f11e2d930Brian Carlstrom // fields the constructor should have set. 453d2fe10a3a34af171bf1631219cd2d6ff6b7778b5Sebastien Hertz if (runtime->IsActiveTransaction()) { 454d2fe10a3a34af171bf1631219cd2d6ff6b7778b5Sebastien Hertz InitPeer<true>(soa, thread_is_daemon, thread_group, thread_name.get(), thread_priority); 455d2fe10a3a34af171bf1631219cd2d6ff6b7778b5Sebastien Hertz } else { 456d2fe10a3a34af171bf1631219cd2d6ff6b7778b5Sebastien Hertz InitPeer<false>(soa, thread_is_daemon, thread_group, thread_name.get(), thread_priority); 457d2fe10a3a34af171bf1631219cd2d6ff6b7778b5Sebastien Hertz } 458eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier peer_thread_name.Assign(GetThreadName(soa)); 45900fae585c6e4a37b964c77f557fbf84f11e2d930Brian Carlstrom } 460225f5a1df25241babd16cdba54056b9e2cd166a2Elliott Hughes // 'thread_name' may have been null, so don't trust 'peer_thread_name' to be non-null. 461eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier if (peer_thread_name.Get() != nullptr) { 462899e789bd4741c0172268f7838ce8ab220a5f916Elliott Hughes SetThreadName(peer_thread_name->ToModifiedUtf8().c_str()); 46300fae585c6e4a37b964c77f557fbf84f11e2d930Brian Carlstrom } 46461e019d291583029c01b61b93bea750f2b663c37Carl Shapiro} 46561e019d291583029c01b61b93bea750f2b663c37Carl Shapiro 466d2fe10a3a34af171bf1631219cd2d6ff6b7778b5Sebastien Hertztemplate<bool kTransactionActive> 467d2fe10a3a34af171bf1631219cd2d6ff6b7778b5Sebastien Hertzvoid Thread::InitPeer(ScopedObjectAccess& soa, jboolean thread_is_daemon, jobject thread_group, 468d2fe10a3a34af171bf1631219cd2d6ff6b7778b5Sebastien Hertz jobject thread_name, jint thread_priority) { 469d2fe10a3a34af171bf1631219cd2d6ff6b7778b5Sebastien Hertz soa.DecodeField(WellKnownClasses::java_lang_Thread_daemon)-> 470dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers SetBoolean<kTransactionActive>(tlsPtr_.opeer, thread_is_daemon); 471d2fe10a3a34af171bf1631219cd2d6ff6b7778b5Sebastien Hertz soa.DecodeField(WellKnownClasses::java_lang_Thread_group)-> 472dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers SetObject<kTransactionActive>(tlsPtr_.opeer, soa.Decode<mirror::Object*>(thread_group)); 473d2fe10a3a34af171bf1631219cd2d6ff6b7778b5Sebastien Hertz soa.DecodeField(WellKnownClasses::java_lang_Thread_name)-> 474dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers SetObject<kTransactionActive>(tlsPtr_.opeer, soa.Decode<mirror::Object*>(thread_name)); 475d2fe10a3a34af171bf1631219cd2d6ff6b7778b5Sebastien Hertz soa.DecodeField(WellKnownClasses::java_lang_Thread_priority)-> 476dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers SetInt<kTransactionActive>(tlsPtr_.opeer, thread_priority); 477d2fe10a3a34af171bf1631219cd2d6ff6b7778b5Sebastien Hertz} 478d2fe10a3a34af171bf1631219cd2d6ff6b7778b5Sebastien Hertz 479899e789bd4741c0172268f7838ce8ab220a5f916Elliott Hughesvoid Thread::SetThreadName(const char* name) { 480dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.name->assign(name); 481899e789bd4741c0172268f7838ce8ab220a5f916Elliott Hughes ::art::SetThreadName(name); 482899e789bd4741c0172268f7838ce8ab220a5f916Elliott Hughes Dbg::DdmSendThreadNotification(this, CHUNK_TYPE("THNM")); 483899e789bd4741c0172268f7838ce8ab220a5f916Elliott Hughes} 484899e789bd4741c0172268f7838ce8ab220a5f916Elliott Hughes 485be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughesvoid Thread::InitStackHwm() { 486dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers void* read_stack_base; 487dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers size_t read_stack_size; 488dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers GetThreadStack(tlsPtr_.pthread_self, &read_stack_base, &read_stack_size); 48936ecb789775eb5bd284ce5dd35d2e31e42354f24Elliott Hughes 49036ecb789775eb5bd284ce5dd35d2e31e42354f24Elliott Hughes // TODO: include this in the thread dumps; potentially useful in SIGQUIT output? 491dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers VLOG(threads) << StringPrintf("Native stack is at %p (%s)", read_stack_base, 492dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers PrettySize(read_stack_size).c_str()); 493e188419b971936086a188843378375f5ced13724Elliott Hughes 494dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.stack_begin = reinterpret_cast<byte*>(read_stack_base); 495dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.stack_size = read_stack_size; 49636ecb789775eb5bd284ce5dd35d2e31e42354f24Elliott Hughes 49703c9785a8a6d712775cf406c4371d0227c44148fDave Allison // The minimum stack size we can cope with is the overflow reserved bytes (typically 49803c9785a8a6d712775cf406c4371d0227c44148fDave Allison // 8K) + the protected region size (4K) + another page (4K). Typically this will 49903c9785a8a6d712775cf406c4371d0227c44148fDave Allison // be 8+4+4 = 16K. The thread won't be able to do much with this stack even the GC takes 50003c9785a8a6d712775cf406c4371d0227c44148fDave Allison // between 8K and 12K. 50103c9785a8a6d712775cf406c4371d0227c44148fDave Allison uint32_t min_stack = GetStackOverflowReservedBytes(kRuntimeISA) + kStackOverflowProtectedSize 50203c9785a8a6d712775cf406c4371d0227c44148fDave Allison + 4 * KB; 50303c9785a8a6d712775cf406c4371d0227c44148fDave Allison if (read_stack_size <= min_stack) { 504dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers LOG(FATAL) << "Attempt to attach a thread with a too-small stack (" << read_stack_size 505dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers << " bytes)"; 506be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes } 507449b4bdf90b527ef7a42faaf087494538e62363cElliott Hughes 508e188419b971936086a188843378375f5ced13724Elliott Hughes // TODO: move this into the Linux GetThreadStack implementation. 509b84d7a226399dcc60bc0a421715ffc90ce9213f7Andreas Gampe#if !defined(__APPLE__) 51036ecb789775eb5bd284ce5dd35d2e31e42354f24Elliott Hughes // If we're the main thread, check whether we were run with an unlimited stack. In that case, 51136ecb789775eb5bd284ce5dd35d2e31e42354f24Elliott Hughes // glibc will have reported a 2GB stack for our 32-bit process, and our stack overflow detection 51236ecb789775eb5bd284ce5dd35d2e31e42354f24Elliott Hughes // will be broken because we'll die long before we get close to 2GB. 513120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers bool is_main_thread = (::art::GetTid() == getpid()); 514120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers if (is_main_thread) { 51536ecb789775eb5bd284ce5dd35d2e31e42354f24Elliott Hughes rlimit stack_limit; 51636ecb789775eb5bd284ce5dd35d2e31e42354f24Elliott Hughes if (getrlimit(RLIMIT_STACK, &stack_limit) == -1) { 51736ecb789775eb5bd284ce5dd35d2e31e42354f24Elliott Hughes PLOG(FATAL) << "getrlimit(RLIMIT_STACK) failed"; 51836ecb789775eb5bd284ce5dd35d2e31e42354f24Elliott Hughes } 51936ecb789775eb5bd284ce5dd35d2e31e42354f24Elliott Hughes if (stack_limit.rlim_cur == RLIM_INFINITY) { 52036ecb789775eb5bd284ce5dd35d2e31e42354f24Elliott Hughes // Find the default stack size for new threads... 52136ecb789775eb5bd284ce5dd35d2e31e42354f24Elliott Hughes pthread_attr_t default_attributes; 52236ecb789775eb5bd284ce5dd35d2e31e42354f24Elliott Hughes size_t default_stack_size; 52336ecb789775eb5bd284ce5dd35d2e31e42354f24Elliott Hughes CHECK_PTHREAD_CALL(pthread_attr_init, (&default_attributes), "default stack size query"); 52436ecb789775eb5bd284ce5dd35d2e31e42354f24Elliott Hughes CHECK_PTHREAD_CALL(pthread_attr_getstacksize, (&default_attributes, &default_stack_size), 52536ecb789775eb5bd284ce5dd35d2e31e42354f24Elliott Hughes "default stack size query"); 52636ecb789775eb5bd284ce5dd35d2e31e42354f24Elliott Hughes CHECK_PTHREAD_CALL(pthread_attr_destroy, (&default_attributes), "default stack size query"); 52736ecb789775eb5bd284ce5dd35d2e31e42354f24Elliott Hughes 52836ecb789775eb5bd284ce5dd35d2e31e42354f24Elliott Hughes // ...and use that as our limit. 529dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers size_t old_stack_size = read_stack_size; 530dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.stack_size = default_stack_size; 531dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.stack_begin += (old_stack_size - default_stack_size); 532faf4ba01738400f418b45c4323aa9e8e6b6ba2a0Elliott Hughes VLOG(threads) << "Limiting unlimited stack (reported as " << PrettySize(old_stack_size) << ")" 533dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers << " to " << PrettySize(default_stack_size) 534dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers << " with base " << reinterpret_cast<void*>(tlsPtr_.stack_begin); 53536ecb789775eb5bd284ce5dd35d2e31e42354f24Elliott Hughes } 53636ecb789775eb5bd284ce5dd35d2e31e42354f24Elliott Hughes } 537e188419b971936086a188843378375f5ced13724Elliott Hughes#endif 53836ecb789775eb5bd284ce5dd35d2e31e42354f24Elliott Hughes 539932746a4f22951abcba7b7c4c94c27b1bf164272Ian Rogers // Set stack_end_ to the bottom of the stack saving space of stack overflows 540f943914730db8ad2ff03d49a2cacd31885d08fd7Dave Allison bool implicit_stack_check = !Runtime::Current()->ExplicitStackOverflowChecks(); 54103c9785a8a6d712775cf406c4371d0227c44148fDave Allison ResetDefaultStackEnd(); 542f943914730db8ad2ff03d49a2cacd31885d08fd7Dave Allison 543f943914730db8ad2ff03d49a2cacd31885d08fd7Dave Allison // Install the protected region if we are doing implicit overflow checks. 544f943914730db8ad2ff03d49a2cacd31885d08fd7Dave Allison if (implicit_stack_check) { 54503c9785a8a6d712775cf406c4371d0227c44148fDave Allison size_t guardsize; 54603c9785a8a6d712775cf406c4371d0227c44148fDave Allison pthread_attr_t attributes; 54703c9785a8a6d712775cf406c4371d0227c44148fDave Allison CHECK_PTHREAD_CALL(pthread_attr_init, (&attributes), "guard size query"); 54803c9785a8a6d712775cf406c4371d0227c44148fDave Allison CHECK_PTHREAD_CALL(pthread_attr_getguardsize, (&attributes, &guardsize), "guard size query"); 54903c9785a8a6d712775cf406c4371d0227c44148fDave Allison CHECK_PTHREAD_CALL(pthread_attr_destroy, (&attributes), "guard size query"); 55003c9785a8a6d712775cf406c4371d0227c44148fDave Allison // The thread might have protected region at the bottom. We need 55103c9785a8a6d712775cf406c4371d0227c44148fDave Allison // to install our own region so we need to move the limits 55203c9785a8a6d712775cf406c4371d0227c44148fDave Allison // of the stack to make room for it. 55303c9785a8a6d712775cf406c4371d0227c44148fDave Allison tlsPtr_.stack_begin += guardsize + kStackOverflowProtectedSize; 55403c9785a8a6d712775cf406c4371d0227c44148fDave Allison tlsPtr_.stack_end += guardsize + kStackOverflowProtectedSize; 55503c9785a8a6d712775cf406c4371d0227c44148fDave Allison tlsPtr_.stack_size -= guardsize; 55603c9785a8a6d712775cf406c4371d0227c44148fDave Allison 55703c9785a8a6d712775cf406c4371d0227c44148fDave Allison InstallImplicitProtection(); 558f943914730db8ad2ff03d49a2cacd31885d08fd7Dave Allison } 559449b4bdf90b527ef7a42faaf087494538e62363cElliott Hughes 560449b4bdf90b527ef7a42faaf087494538e62363cElliott Hughes // Sanity check. 561449b4bdf90b527ef7a42faaf087494538e62363cElliott Hughes int stack_variable; 562dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers CHECK_GT(&stack_variable, reinterpret_cast<void*>(tlsPtr_.stack_end)); 563be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes} 564be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes 56500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogersvoid Thread::ShortDump(std::ostream& os) const { 56600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers os << "Thread["; 567d9c4fc94fa618617f94e1de9af5f034549100753Ian Rogers if (GetThreadId() != 0) { 56800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // If we're in kStarting, we won't have a thin lock id or tid yet. 569d9c4fc94fa618617f94e1de9af5f034549100753Ian Rogers os << GetThreadId() 57000f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers << ",tid=" << GetTid() << ','; 571e0918556e7551de638870dcad3f2023f94f85a50Elliott Hughes } 572474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers os << GetState() 57300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers << ",Thread*=" << this 574dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers << ",peer=" << tlsPtr_.opeer 575dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers << ",\"" << *tlsPtr_.name << "\"" 57600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers << "]"; 577d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes} 578d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes 57900f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogersvoid Thread::Dump(std::ostream& os) const { 58000f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers DumpState(os); 58100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers DumpStack(os); 58200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers} 58300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 5842b7c4d196c8abe32f4ca633534917da9de53c359Mathieu Chartiermirror::String* Thread::GetThreadName(const ScopedObjectAccessAlreadyRunnable& soa) const { 585ea46f950e7a51585db293cd7f047de190a482414Brian Carlstrom mirror::ArtField* f = soa.DecodeField(WellKnownClasses::java_lang_Thread_name); 586dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers return (tlsPtr_.opeer != nullptr) ? reinterpret_cast<mirror::String*>(f->GetObject(tlsPtr_.opeer)) : nullptr; 587fc86162ce2a3467acb690e18cc8bd9b3daafc606Elliott Hughes} 588fc86162ce2a3467acb690e18cc8bd9b3daafc606Elliott Hughes 589ffb465f23d9549dd591e6aa62e9250523cb00233Elliott Hughesvoid Thread::GetThreadName(std::string& name) const { 590dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers name.assign(*tlsPtr_.name); 591ffb465f23d9549dd591e6aa62e9250523cb00233Elliott Hughes} 592ffb465f23d9549dd591e6aa62e9250523cb00233Elliott Hughes 59357dac6ed61a0a25c14d4e2fabc84435578d42360Jeff Haouint64_t Thread::GetCpuMicroTime() const { 59457dac6ed61a0a25c14d4e2fabc84435578d42360Jeff Hao#if defined(HAVE_POSIX_CLOCKS) 59557dac6ed61a0a25c14d4e2fabc84435578d42360Jeff Hao clockid_t cpu_clock_id; 596dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers pthread_getcpuclockid(tlsPtr_.pthread_self, &cpu_clock_id); 59757dac6ed61a0a25c14d4e2fabc84435578d42360Jeff Hao timespec now; 59857dac6ed61a0a25c14d4e2fabc84435578d42360Jeff Hao clock_gettime(cpu_clock_id, &now); 5990f6784737882199197796b67b99e5f1ded383beeIan Rogers return static_cast<uint64_t>(now.tv_sec) * UINT64_C(1000000) + now.tv_nsec / UINT64_C(1000); 60057dac6ed61a0a25c14d4e2fabc84435578d42360Jeff Hao#else 60157dac6ed61a0a25c14d4e2fabc84435578d42360Jeff Hao UNIMPLEMENTED(WARNING); 60257dac6ed61a0a25c14d4e2fabc84435578d42360Jeff Hao return -1; 60357dac6ed61a0a25c14d4e2fabc84435578d42360Jeff Hao#endif 60457dac6ed61a0a25c14d4e2fabc84435578d42360Jeff Hao} 60557dac6ed61a0a25c14d4e2fabc84435578d42360Jeff Hao 60601ae5808367e641a983e3f8bb82b3e0d364cd03eIan Rogers// Attempt to rectify locks so that we dump thread list with required locks before exiting. 60701ae5808367e641a983e3f8bb82b3e0d364cd03eIan Rogersstatic void UnsafeLogFatalForSuspendCount(Thread* self, Thread* thread) NO_THREAD_SAFETY_ANALYSIS { 608120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers LOG(ERROR) << *thread << " suspend count already zero."; 60901ae5808367e641a983e3f8bb82b3e0d364cd03eIan Rogers Locks::thread_suspend_count_lock_->Unlock(self); 61001ae5808367e641a983e3f8bb82b3e0d364cd03eIan Rogers if (!Locks::mutator_lock_->IsSharedHeld(self)) { 61101ae5808367e641a983e3f8bb82b3e0d364cd03eIan Rogers Locks::mutator_lock_->SharedTryLock(self); 61201ae5808367e641a983e3f8bb82b3e0d364cd03eIan Rogers if (!Locks::mutator_lock_->IsSharedHeld(self)) { 61301ae5808367e641a983e3f8bb82b3e0d364cd03eIan Rogers LOG(WARNING) << "Dumping thread list without holding mutator_lock_"; 61401ae5808367e641a983e3f8bb82b3e0d364cd03eIan Rogers } 61501ae5808367e641a983e3f8bb82b3e0d364cd03eIan Rogers } 61601ae5808367e641a983e3f8bb82b3e0d364cd03eIan Rogers if (!Locks::thread_list_lock_->IsExclusiveHeld(self)) { 61701ae5808367e641a983e3f8bb82b3e0d364cd03eIan Rogers Locks::thread_list_lock_->TryLock(self); 61801ae5808367e641a983e3f8bb82b3e0d364cd03eIan Rogers if (!Locks::thread_list_lock_->IsExclusiveHeld(self)) { 61901ae5808367e641a983e3f8bb82b3e0d364cd03eIan Rogers LOG(WARNING) << "Dumping thread list without holding thread_list_lock_"; 62001ae5808367e641a983e3f8bb82b3e0d364cd03eIan Rogers } 62101ae5808367e641a983e3f8bb82b3e0d364cd03eIan Rogers } 62201ae5808367e641a983e3f8bb82b3e0d364cd03eIan Rogers std::ostringstream ss; 62301ae5808367e641a983e3f8bb82b3e0d364cd03eIan Rogers Runtime::Current()->GetThreadList()->DumpLocked(ss); 624120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers LOG(FATAL) << ss.str(); 62501ae5808367e641a983e3f8bb82b3e0d364cd03eIan Rogers} 62601ae5808367e641a983e3f8bb82b3e0d364cd03eIan Rogers 62701ae5808367e641a983e3f8bb82b3e0d364cd03eIan Rogersvoid Thread::ModifySuspendCount(Thread* self, int delta, bool for_debugger) { 6282966e13d504a72d55c62bf864e183ec80703c699Ian Rogers if (kIsDebugBuild) { 6292966e13d504a72d55c62bf864e183ec80703c699Ian Rogers DCHECK(delta == -1 || delta == +1 || delta == -tls32_.debug_suspend_count) 6302966e13d504a72d55c62bf864e183ec80703c699Ian Rogers << delta << " " << tls32_.debug_suspend_count << " " << this; 6312966e13d504a72d55c62bf864e183ec80703c699Ian Rogers DCHECK_GE(tls32_.suspend_count, tls32_.debug_suspend_count) << this; 6322966e13d504a72d55c62bf864e183ec80703c699Ian Rogers Locks::thread_suspend_count_lock_->AssertHeld(self); 6332966e13d504a72d55c62bf864e183ec80703c699Ian Rogers if (this != self && !IsSuspended()) { 6342966e13d504a72d55c62bf864e183ec80703c699Ian Rogers Locks::thread_list_lock_->AssertHeld(self); 6352966e13d504a72d55c62bf864e183ec80703c699Ian Rogers } 636cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers } 637dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers if (UNLIKELY(delta < 0 && tls32_.suspend_count <= 0)) { 63801ae5808367e641a983e3f8bb82b3e0d364cd03eIan Rogers UnsafeLogFatalForSuspendCount(self, this); 63900f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers return; 64000f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 64101ae5808367e641a983e3f8bb82b3e0d364cd03eIan Rogers 642dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tls32_.suspend_count += delta; 64300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers if (for_debugger) { 644dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tls32_.debug_suspend_count += delta; 64500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 64601ae5808367e641a983e3f8bb82b3e0d364cd03eIan Rogers 647dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers if (tls32_.suspend_count == 0) { 648474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers AtomicClearFlag(kSuspendRequest); 649474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers } else { 650474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers AtomicSetFlag(kSuspendRequest); 651b373e091eac39b1a79c11f2dcbd610af01e9e8a9Dave Allison TriggerSuspend(); 652474b6da273c7ce6df50a4e51eb9929a77e1611c3Ian Rogers } 65300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers} 65400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 655752a0e606afdc7aa4825ebbe62b187b8abba14ccMathieu Chartiervoid Thread::RunCheckpointFunction() { 6560aded089f565008ba5908e395e5914ca4f91f2deDave Allison Closure *checkpoints[kMaxCheckpoints]; 6570aded089f565008ba5908e395e5914ca4f91f2deDave Allison 6580aded089f565008ba5908e395e5914ca4f91f2deDave Allison // Grab the suspend_count lock and copy the current set of 6590aded089f565008ba5908e395e5914ca4f91f2deDave Allison // checkpoints. Then clear the list and the flag. The RequestCheckpoint 6600aded089f565008ba5908e395e5914ca4f91f2deDave Allison // function will also grab this lock so we prevent a race between setting 6610aded089f565008ba5908e395e5914ca4f91f2deDave Allison // the kCheckpointRequest flag and clearing it. 6620aded089f565008ba5908e395e5914ca4f91f2deDave Allison { 6630aded089f565008ba5908e395e5914ca4f91f2deDave Allison MutexLock mu(this, *Locks::thread_suspend_count_lock_); 6640aded089f565008ba5908e395e5914ca4f91f2deDave Allison for (uint32_t i = 0; i < kMaxCheckpoints; ++i) { 665dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers checkpoints[i] = tlsPtr_.checkpoint_functions[i]; 666dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.checkpoint_functions[i] = nullptr; 6670aded089f565008ba5908e395e5914ca4f91f2deDave Allison } 6680aded089f565008ba5908e395e5914ca4f91f2deDave Allison AtomicClearFlag(kCheckpointRequest); 6690aded089f565008ba5908e395e5914ca4f91f2deDave Allison } 6700aded089f565008ba5908e395e5914ca4f91f2deDave Allison 6710aded089f565008ba5908e395e5914ca4f91f2deDave Allison // Outside the lock, run all the checkpoint functions that 6720aded089f565008ba5908e395e5914ca4f91f2deDave Allison // we collected. 6730aded089f565008ba5908e395e5914ca4f91f2deDave Allison bool found_checkpoint = false; 6740aded089f565008ba5908e395e5914ca4f91f2deDave Allison for (uint32_t i = 0; i < kMaxCheckpoints; ++i) { 6750aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (checkpoints[i] != nullptr) { 6760aded089f565008ba5908e395e5914ca4f91f2deDave Allison ATRACE_BEGIN("Checkpoint function"); 6770aded089f565008ba5908e395e5914ca4f91f2deDave Allison checkpoints[i]->Run(this); 6780aded089f565008ba5908e395e5914ca4f91f2deDave Allison ATRACE_END(); 6790aded089f565008ba5908e395e5914ca4f91f2deDave Allison found_checkpoint = true; 6800aded089f565008ba5908e395e5914ca4f91f2deDave Allison } 6810aded089f565008ba5908e395e5914ca4f91f2deDave Allison } 6820aded089f565008ba5908e395e5914ca4f91f2deDave Allison CHECK(found_checkpoint); 683752a0e606afdc7aa4825ebbe62b187b8abba14ccMathieu Chartier} 684752a0e606afdc7aa4825ebbe62b187b8abba14ccMathieu Chartier 6850e4627e593bc39f8e3d89c31f8977d55054c07ccMathieu Chartierbool Thread::RequestCheckpoint(Closure* function) { 68659cde534aa295bad7de29472b3cce9576d7996a8Chris Dearman union StateAndFlags old_state_and_flags; 687dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers old_state_and_flags.as_int = tls32_.state_and_flags.as_int; 688d9c4fc94fa618617f94e1de9af5f034549100753Ian Rogers if (old_state_and_flags.as_struct.state != kRunnable) { 689d9c4fc94fa618617f94e1de9af5f034549100753Ian Rogers return false; // Fail, thread is suspended and so can't run a checkpoint. 690d9c4fc94fa618617f94e1de9af5f034549100753Ian Rogers } 6910aded089f565008ba5908e395e5914ca4f91f2deDave Allison 6920aded089f565008ba5908e395e5914ca4f91f2deDave Allison uint32_t available_checkpoint = kMaxCheckpoints; 6930aded089f565008ba5908e395e5914ca4f91f2deDave Allison for (uint32_t i = 0 ; i < kMaxCheckpoints; ++i) { 694dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers if (tlsPtr_.checkpoint_functions[i] == nullptr) { 6950aded089f565008ba5908e395e5914ca4f91f2deDave Allison available_checkpoint = i; 6960aded089f565008ba5908e395e5914ca4f91f2deDave Allison break; 6970aded089f565008ba5908e395e5914ca4f91f2deDave Allison } 6980aded089f565008ba5908e395e5914ca4f91f2deDave Allison } 6990aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (available_checkpoint == kMaxCheckpoints) { 7000aded089f565008ba5908e395e5914ca4f91f2deDave Allison // No checkpoint functions available, we can't run a checkpoint 7010aded089f565008ba5908e395e5914ca4f91f2deDave Allison return false; 702d9c4fc94fa618617f94e1de9af5f034549100753Ian Rogers } 703dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.checkpoint_functions[available_checkpoint] = function; 7040aded089f565008ba5908e395e5914ca4f91f2deDave Allison 705d9c4fc94fa618617f94e1de9af5f034549100753Ian Rogers // Checkpoint function installed now install flag bit. 706858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier // We must be runnable to request a checkpoint. 7075f51d4b80058236759fea1d932470a57f348c199Mathieu Chartier DCHECK_EQ(old_state_and_flags.as_struct.state, kRunnable); 70859cde534aa295bad7de29472b3cce9576d7996a8Chris Dearman union StateAndFlags new_state_and_flags; 70959cde534aa295bad7de29472b3cce9576d7996a8Chris Dearman new_state_and_flags.as_int = old_state_and_flags.as_int; 710858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier new_state_and_flags.as_struct.flags |= kCheckpointRequest; 7118c1b5f71a8005743756206120624121d7678381fIan Rogers bool success = 7128c1b5f71a8005743756206120624121d7678381fIan Rogers tls32_.state_and_flags.as_atomic_int.CompareExchangeStrongSequentiallyConsistent(old_state_and_flags.as_int, 7138c1b5f71a8005743756206120624121d7678381fIan Rogers new_state_and_flags.as_int); 7148c1b5f71a8005743756206120624121d7678381fIan Rogers if (UNLIKELY(!success)) { 715d9c4fc94fa618617f94e1de9af5f034549100753Ian Rogers // The thread changed state before the checkpoint was installed. 716dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers CHECK_EQ(tlsPtr_.checkpoint_functions[available_checkpoint], function); 717dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.checkpoint_functions[available_checkpoint] = nullptr; 7180aded089f565008ba5908e395e5914ca4f91f2deDave Allison } else { 7190aded089f565008ba5908e395e5914ca4f91f2deDave Allison CHECK_EQ(ReadFlag(kCheckpointRequest), true); 720b373e091eac39b1a79c11f2dcbd610af01e9e8a9Dave Allison TriggerSuspend(); 721d9c4fc94fa618617f94e1de9af5f034549100753Ian Rogers } 7228c1b5f71a8005743756206120624121d7678381fIan Rogers return success; 723858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier} 724858f1c5fd5e528d0b16040ced74d4636046a42d8Mathieu Chartier 72500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogersvoid Thread::FullSuspendCheck() { 72600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers VLOG(threads) << this << " self-suspending"; 727752a0e606afdc7aa4825ebbe62b187b8abba14ccMathieu Chartier ATRACE_BEGIN("Full suspend check"); 72800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Make thread appear suspended to other threads, release mutator_lock_. 72900f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers TransitionFromRunnableToSuspended(kSuspended); 73000f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers // Transition back to runnable noting requests to suspend, re-acquire share on mutator_lock_. 73100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers TransitionFromSuspendedToRunnable(); 732752a0e606afdc7aa4825ebbe62b187b8abba14ccMathieu Chartier ATRACE_END(); 73300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers VLOG(threads) << this << " self-reviving"; 73400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers} 73500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 736abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughesvoid Thread::DumpState(std::ostream& os, const Thread* thread, pid_t tid) { 737d369bb76dee0df2d2a106e9bf7f4e6446ed6deaaElliott Hughes std::string group_name; 738d369bb76dee0df2d2a106e9bf7f4e6446ed6deaaElliott Hughes int priority; 739d369bb76dee0df2d2a106e9bf7f4e6446ed6deaaElliott Hughes bool is_daemon = false; 74081d425b0b232962441616f8b14f73620bffef5e5Ian Rogers Thread* self = Thread::Current(); 741d369bb76dee0df2d2a106e9bf7f4e6446ed6deaaElliott Hughes 742c7a966dbba6902618ff0959d604c05d7570df8c8Mathieu Chartier // Don't do this if we are aborting since the GC may have all the threads suspended. This will 743c7a966dbba6902618ff0959d604c05d7570df8c8Mathieu Chartier // cause ScopedObjectAccessUnchecked to deadlock. 744c7a966dbba6902618ff0959d604c05d7570df8c8Mathieu Chartier if (gAborting == 0 && self != nullptr && thread != nullptr && thread->tlsPtr_.opeer != nullptr) { 745cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers ScopedObjectAccessUnchecked soa(self); 746dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers priority = soa.DecodeField(WellKnownClasses::java_lang_Thread_priority) 747dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers ->GetInt(thread->tlsPtr_.opeer); 748dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers is_daemon = soa.DecodeField(WellKnownClasses::java_lang_Thread_daemon) 749dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers ->GetBoolean(thread->tlsPtr_.opeer); 750d369bb76dee0df2d2a106e9bf7f4e6446ed6deaaElliott Hughes 7512dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers mirror::Object* thread_group = 752dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers soa.DecodeField(WellKnownClasses::java_lang_Thread_group)->GetObject(thread->tlsPtr_.opeer); 753120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers 7540aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (thread_group != nullptr) { 755ea46f950e7a51585db293cd7f047de190a482414Brian Carlstrom mirror::ArtField* group_name_field = 7562dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers soa.DecodeField(WellKnownClasses::java_lang_ThreadGroup_name); 7572dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers mirror::String* group_name_string = 7582dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers reinterpret_cast<mirror::String*>(group_name_field->GetObject(thread_group)); 7590aded089f565008ba5908e395e5914ca4f91f2deDave Allison group_name = (group_name_string != nullptr) ? group_name_string->ToModifiedUtf8() : "<null>"; 760d369bb76dee0df2d2a106e9bf7f4e6446ed6deaaElliott Hughes } 761d369bb76dee0df2d2a106e9bf7f4e6446ed6deaaElliott Hughes } else { 762d369bb76dee0df2d2a106e9bf7f4e6446ed6deaaElliott Hughes priority = GetNativePriority(); 763dcc247493fd8fb243e335c3ec08e5e625896a47cElliott Hughes } 764d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes 765abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughes std::string scheduler_group_name(GetSchedulerGroupName(tid)); 7661bac54ffa933fbe9b92b62437577f2f4583eff1aElliott Hughes if (scheduler_group_name.empty()) { 7671bac54ffa933fbe9b92b62437577f2f4583eff1aElliott Hughes scheduler_group_name = "default"; 768d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes } 769d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes 7700aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (thread != nullptr) { 771dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers os << '"' << *thread->tlsPtr_.name << '"'; 772abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughes if (is_daemon) { 773abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughes os << " daemon"; 774abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughes } 775abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughes os << " prio=" << priority 776d9c4fc94fa618617f94e1de9af5f034549100753Ian Rogers << " tid=" << thread->GetThreadId() 77780537bb742dff4ccdf6d04b1c0bb7d2179acc8cbElliott Hughes << " " << thread->GetState(); 77880537bb742dff4ccdf6d04b1c0bb7d2179acc8cbElliott Hughes if (thread->IsStillStarting()) { 77980537bb742dff4ccdf6d04b1c0bb7d2179acc8cbElliott Hughes os << " (still starting up)"; 78080537bb742dff4ccdf6d04b1c0bb7d2179acc8cbElliott Hughes } 78180537bb742dff4ccdf6d04b1c0bb7d2179acc8cbElliott Hughes os << "\n"; 782abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughes } else { 783289be85116aaf7c48413858b5d0448868b4e61f3Elliott Hughes os << '"' << ::art::GetThreadName(tid) << '"' 784abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughes << " prio=" << priority 785abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughes << " (not attached)\n"; 786abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughes } 787abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughes 7880aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (thread != nullptr) { 78981d425b0b232962441616f8b14f73620bffef5e5Ian Rogers MutexLock mu(self, *Locks::thread_suspend_count_lock_); 790abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughes os << " | group=\"" << group_name << "\"" 791dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers << " sCount=" << thread->tls32_.suspend_count 792dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers << " dsCount=" << thread->tls32_.debug_suspend_count 793dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers << " obj=" << reinterpret_cast<void*>(thread->tlsPtr_.opeer) 794abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughes << " self=" << reinterpret_cast<const void*>(thread) << "\n"; 795d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes } 7960d39c12238499ca9ccc34d1532c443335e7c1044Elliott Hughes 797abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughes os << " | sysTid=" << tid 798abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughes << " nice=" << getpriority(PRIO_PROCESS, tid) 7990d39c12238499ca9ccc34d1532c443335e7c1044Elliott Hughes << " cgrp=" << scheduler_group_name; 8000aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (thread != nullptr) { 8010d39c12238499ca9ccc34d1532c443335e7c1044Elliott Hughes int policy; 8020d39c12238499ca9ccc34d1532c443335e7c1044Elliott Hughes sched_param sp; 803dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers CHECK_PTHREAD_CALL(pthread_getschedparam, (thread->tlsPtr_.pthread_self, &policy, &sp), 804dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers __FUNCTION__); 8050d39c12238499ca9ccc34d1532c443335e7c1044Elliott Hughes os << " sched=" << policy << "/" << sp.sched_priority 806dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers << " handle=" << reinterpret_cast<void*>(thread->tlsPtr_.pthread_self); 8070d39c12238499ca9ccc34d1532c443335e7c1044Elliott Hughes } 8080d39c12238499ca9ccc34d1532c443335e7c1044Elliott Hughes os << "\n"; 809d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes 810d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes // Grab the scheduler stats for this thread. 811d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes std::string scheduler_stats; 812abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughes if (ReadFileToString(StringPrintf("/proc/self/task/%d/schedstat", tid), &scheduler_stats)) { 8137934ac288acfb2552bb0b06ec1f61e5820d924a4Brian Carlstrom scheduler_stats.resize(scheduler_stats.size() - 1); // Lose the trailing '\n'. 814d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes } else { 815d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes scheduler_stats = "0 0 0"; 816d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes } 817d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes 818ba0b9c55adce3f533845ab1b25c552589e5b4118Elliott Hughes char native_thread_state = '?'; 819d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes int utime = 0; 820d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes int stime = 0; 821d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes int task_cpu = 0; 8222921201dce37ba40c55b89c0deca3c34bf64168eBrian Carlstrom GetTaskStats(tid, &native_thread_state, &utime, &stime, &task_cpu); 823d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes 824ba0b9c55adce3f533845ab1b25c552589e5b4118Elliott Hughes os << " | state=" << native_thread_state 825ba0b9c55adce3f533845ab1b25c552589e5b4118Elliott Hughes << " schedstat=( " << scheduler_stats << " )" 826d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes << " utm=" << utime 827d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughes << " stm=" << stime 828abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughes << " core=" << task_cpu 829abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughes << " HZ=" << sysconf(_SC_CLK_TCK) << "\n"; 8300aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (thread != nullptr) { 831dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers os << " | stack=" << reinterpret_cast<void*>(thread->tlsPtr_.stack_begin) << "-" 832dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers << reinterpret_cast<void*>(thread->tlsPtr_.stack_end) << " stackSize=" 833dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers << PrettySize(thread->tlsPtr_.stack_size) << "\n"; 8349db911eb76976fc1c73c8e563beb3620f1cadf99Mathieu Chartier // Dump the held mutexes. 8359db911eb76976fc1c73c8e563beb3620f1cadf99Mathieu Chartier os << " | held mutexes="; 8369db911eb76976fc1c73c8e563beb3620f1cadf99Mathieu Chartier for (size_t i = 0; i < kLockLevelCount; ++i) { 8379db911eb76976fc1c73c8e563beb3620f1cadf99Mathieu Chartier if (i != kMonitorLock) { 8389db911eb76976fc1c73c8e563beb3620f1cadf99Mathieu Chartier BaseMutex* mutex = thread->GetHeldMutex(static_cast<LockLevel>(i)); 8399db911eb76976fc1c73c8e563beb3620f1cadf99Mathieu Chartier if (mutex != nullptr) { 8409db911eb76976fc1c73c8e563beb3620f1cadf99Mathieu Chartier os << " \"" << mutex->GetName() << "\""; 8419db911eb76976fc1c73c8e563beb3620f1cadf99Mathieu Chartier if (mutex->IsReaderWriterMutex()) { 8429db911eb76976fc1c73c8e563beb3620f1cadf99Mathieu Chartier ReaderWriterMutex* rw_mutex = down_cast<ReaderWriterMutex*>(mutex); 843a9d8c4ce62fff49580fa70d3fcb3aee45344d8caIan Rogers if (rw_mutex->GetExclusiveOwnerTid() == static_cast<uint64_t>(tid)) { 8449db911eb76976fc1c73c8e563beb3620f1cadf99Mathieu Chartier os << "(exclusive held)"; 8459db911eb76976fc1c73c8e563beb3620f1cadf99Mathieu Chartier } else { 8469db911eb76976fc1c73c8e563beb3620f1cadf99Mathieu Chartier os << "(shared held)"; 8479db911eb76976fc1c73c8e563beb3620f1cadf99Mathieu Chartier } 8489db911eb76976fc1c73c8e563beb3620f1cadf99Mathieu Chartier } 8499db911eb76976fc1c73c8e563beb3620f1cadf99Mathieu Chartier } 8509db911eb76976fc1c73c8e563beb3620f1cadf99Mathieu Chartier } 8519db911eb76976fc1c73c8e563beb3620f1cadf99Mathieu Chartier } 8529db911eb76976fc1c73c8e563beb3620f1cadf99Mathieu Chartier os << "\n"; 853abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughes } 854abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughes} 855abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughes 856abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughesvoid Thread::DumpState(std::ostream& os) const { 857abbe07d095547ded03c2e9d0d53943d43471278dElliott Hughes Thread::DumpState(os, this, GetTid()); 858a09576416788b916095739e43a16917e7948f3a4Elliott Hughes} 859a09576416788b916095739e43a16917e7948f3a4Elliott Hughes 8600399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogersstruct StackDumpVisitor : public StackVisitor { 8617a22fa657b972e8323692368975bc5a7be1cc0f5Ian Rogers StackDumpVisitor(std::ostream& os, Thread* thread, Context* context, bool can_allocate) 862b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) 8637a22fa657b972e8323692368975bc5a7be1cc0f5Ian Rogers : StackVisitor(thread, context), os(os), thread(thread), can_allocate(can_allocate), 8640aded089f565008ba5908e395e5914ca4f91f2deDave Allison last_method(nullptr), last_line_number(0), repetition_count(0), frame_count(0) { 865d369bb76dee0df2d2a106e9bf7f4e6446ed6deaaElliott Hughes } 866d369bb76dee0df2d2a106e9bf7f4e6446ed6deaaElliott Hughes 867bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers virtual ~StackDumpVisitor() { 868e85d2e924953f1a13b7152edba1c13853e6f3a86Elliott Hughes if (frame_count == 0) { 869e85d2e924953f1a13b7152edba1c13853e6f3a86Elliott Hughes os << " (no managed stack frames)\n"; 870e85d2e924953f1a13b7152edba1c13853e6f3a86Elliott Hughes } 871d369bb76dee0df2d2a106e9bf7f4e6446ed6deaaElliott Hughes } 872d369bb76dee0df2d2a106e9bf7f4e6446ed6deaaElliott Hughes 873b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers bool VisitFrame() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 874ea46f950e7a51585db293cd7f047de190a482414Brian Carlstrom mirror::ArtMethod* m = GetMethod(); 8750399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers if (m->IsRuntimeMethod()) { 876530fa005e2944d3b12712f80d974f0e753f568efElliott Hughes return true; 8779086572fa809d1a19d886b467e4da3ce42016982Ian Rogers } 87828ad40dc3ec2f09b0ffd4f6d6787bf1b532ccd5dIan Rogers const int kMaxRepetition = 3; 8792dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers mirror::Class* c = m->GetDeclaringClass(); 880ef7d42fca18c16fbaf103822ad16f23246e2905dIan Rogers mirror::DexCache* dex_cache = c->GetDexCache(); 881b861dc0077342d5a1d2dd9cade3f6990620778ecIan Rogers int line_number = -1; 8820aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (dex_cache != nullptr) { // be tolerant of bad input 8834445a7e3398a6143939168097a3aa275b734504dIan Rogers const DexFile& dex_file = *dex_cache->GetDexFile(); 884c751fdcc9491c1b60c3db517fbc41bb98e92441fMathieu Chartier line_number = dex_file.GetLineNumFromPC(m, GetDexPc(false)); 885b861dc0077342d5a1d2dd9cade3f6990620778ecIan Rogers } 88628ad40dc3ec2f09b0ffd4f6d6787bf1b532ccd5dIan Rogers if (line_number == last_line_number && last_method == m) { 8870aded089f565008ba5908e395e5914ca4f91f2deDave Allison ++repetition_count; 888d369bb76dee0df2d2a106e9bf7f4e6446ed6deaaElliott Hughes } else { 88928ad40dc3ec2f09b0ffd4f6d6787bf1b532ccd5dIan Rogers if (repetition_count >= kMaxRepetition) { 89028ad40dc3ec2f09b0ffd4f6d6787bf1b532ccd5dIan Rogers os << " ... repeated " << (repetition_count - kMaxRepetition) << " times\n"; 89128ad40dc3ec2f09b0ffd4f6d6787bf1b532ccd5dIan Rogers } 89228ad40dc3ec2f09b0ffd4f6d6787bf1b532ccd5dIan Rogers repetition_count = 0; 89328ad40dc3ec2f09b0ffd4f6d6787bf1b532ccd5dIan Rogers last_line_number = line_number; 89428ad40dc3ec2f09b0ffd4f6d6787bf1b532ccd5dIan Rogers last_method = m; 89528ad40dc3ec2f09b0ffd4f6d6787bf1b532ccd5dIan Rogers } 89628ad40dc3ec2f09b0ffd4f6d6787bf1b532ccd5dIan Rogers if (repetition_count < kMaxRepetition) { 89728ad40dc3ec2f09b0ffd4f6d6787bf1b532ccd5dIan Rogers os << " at " << PrettyMethod(m, false); 89828ad40dc3ec2f09b0ffd4f6d6787bf1b532ccd5dIan Rogers if (m->IsNative()) { 89928ad40dc3ec2f09b0ffd4f6d6787bf1b532ccd5dIan Rogers os << "(Native method)"; 90028ad40dc3ec2f09b0ffd4f6d6787bf1b532ccd5dIan Rogers } else { 901bfd9a4378eacaf2dc2bbe05ad48c5164fc93c9feMathieu Chartier const char* source_file(m->GetDeclaringClassSourceFile()); 9020aded089f565008ba5908e395e5914ca4f91f2deDave Allison os << "(" << (source_file != nullptr ? source_file : "unavailable") 9032e450bf45e1bacc9c356f6ab239ccfb31bd8d7e4Brian Carlstrom << ":" << line_number << ")"; 90428ad40dc3ec2f09b0ffd4f6d6787bf1b532ccd5dIan Rogers } 90528ad40dc3ec2f09b0ffd4f6d6787bf1b532ccd5dIan Rogers os << "\n"; 90608fc03ae5dded4adc9b45b7014a4b9dfedbe95a6Elliott Hughes if (frame_count == 0) { 90708fc03ae5dded4adc9b45b7014a4b9dfedbe95a6Elliott Hughes Monitor::DescribeWait(os, thread); 90808fc03ae5dded4adc9b45b7014a4b9dfedbe95a6Elliott Hughes } 90908fc03ae5dded4adc9b45b7014a4b9dfedbe95a6Elliott Hughes if (can_allocate) { 910760172c3ccd6e75f6f1a89d8006934e8ffb1303eAndreas Gampe // Visit locks, but do not abort on errors. This would trigger a nested abort. 911760172c3ccd6e75f6f1a89d8006934e8ffb1303eAndreas Gampe Monitor::VisitLocks(this, DumpLockedObject, &os, false); 91208fc03ae5dded4adc9b45b7014a4b9dfedbe95a6Elliott Hughes } 913d369bb76dee0df2d2a106e9bf7f4e6446ed6deaaElliott Hughes } 9148e4aac52962d54cb4be2078b9cd95685e067133aElliott Hughes 91508fc03ae5dded4adc9b45b7014a4b9dfedbe95a6Elliott Hughes ++frame_count; 916530fa005e2944d3b12712f80d974f0e753f568efElliott Hughes return true; 917d369bb76dee0df2d2a106e9bf7f4e6446ed6deaaElliott Hughes } 9184993bbc8eda377804e585efd918f8ab9d9eab7d4Elliott Hughes 9192dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers static void DumpLockedObject(mirror::Object* o, void* context) 9204993bbc8eda377804e585efd918f8ab9d9eab7d4Elliott Hughes SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 9214993bbc8eda377804e585efd918f8ab9d9eab7d4Elliott Hughes std::ostream& os = *reinterpret_cast<std::ostream*>(context); 922d803bc7ce255be6c16eaf6a8a58a742515e9da9fIan Rogers os << " - locked "; 923d803bc7ce255be6c16eaf6a8a58a742515e9da9fIan Rogers if (o == nullptr) { 924d803bc7ce255be6c16eaf6a8a58a742515e9da9fIan Rogers os << "an unknown object"; 925d803bc7ce255be6c16eaf6a8a58a742515e9da9fIan Rogers } else { 9264d7f61d44a732cfbc8573e5d93364983fd746888Mathieu Chartier if ((o->GetLockWord(false).GetState() == LockWord::kThinLocked) && 927d803bc7ce255be6c16eaf6a8a58a742515e9da9fIan Rogers Locks::mutator_lock_->IsExclusiveHeld(Thread::Current())) { 928d803bc7ce255be6c16eaf6a8a58a742515e9da9fIan Rogers // Getting the identity hashcode here would result in lock inflation and suspension of the 929d803bc7ce255be6c16eaf6a8a58a742515e9da9fIan Rogers // current thread, which isn't safe if this is the only runnable thread. 930d803bc7ce255be6c16eaf6a8a58a742515e9da9fIan Rogers os << StringPrintf("<@addr=0x%" PRIxPTR "> (a %s)", reinterpret_cast<intptr_t>(o), 931d803bc7ce255be6c16eaf6a8a58a742515e9da9fIan Rogers PrettyTypeOf(o).c_str()); 932d803bc7ce255be6c16eaf6a8a58a742515e9da9fIan Rogers } else { 933d803bc7ce255be6c16eaf6a8a58a742515e9da9fIan Rogers os << StringPrintf("<0x%08x> (a %s)", o->IdentityHashCode(), PrettyTypeOf(o).c_str()); 934d803bc7ce255be6c16eaf6a8a58a742515e9da9fIan Rogers } 935d803bc7ce255be6c16eaf6a8a58a742515e9da9fIan Rogers } 936d803bc7ce255be6c16eaf6a8a58a742515e9da9fIan Rogers os << "\n"; 9374993bbc8eda377804e585efd918f8ab9d9eab7d4Elliott Hughes } 9384993bbc8eda377804e585efd918f8ab9d9eab7d4Elliott Hughes 93908fc03ae5dded4adc9b45b7014a4b9dfedbe95a6Elliott Hughes std::ostream& os; 94008fc03ae5dded4adc9b45b7014a4b9dfedbe95a6Elliott Hughes const Thread* thread; 9410878d654e7be8c9666579e22522704d8887415ccIan Rogers const bool can_allocate; 942bfd9a4378eacaf2dc2bbe05ad48c5164fc93c9feMathieu Chartier mirror::ArtMethod* method; 943ea46f950e7a51585db293cd7f047de190a482414Brian Carlstrom mirror::ArtMethod* last_method; 94428ad40dc3ec2f09b0ffd4f6d6787bf1b532ccd5dIan Rogers int last_line_number; 94528ad40dc3ec2f09b0ffd4f6d6787bf1b532ccd5dIan Rogers int repetition_count; 9468e4aac52962d54cb4be2078b9cd95685e067133aElliott Hughes int frame_count; 947d369bb76dee0df2d2a106e9bf7f4e6446ed6deaaElliott Hughes}; 948d369bb76dee0df2d2a106e9bf7f4e6446ed6deaaElliott Hughes 94933e9566255c426e7a2c8fca5b8a1b6a94a5d352cIan Rogersstatic bool ShouldShowNativeStack(const Thread* thread) 95033e9566255c426e7a2c8fca5b8a1b6a94a5d352cIan Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 951aef701da38d14bd479cb275f78e2adaa00f1c54aElliott Hughes ThreadState state = thread->GetState(); 952aef701da38d14bd479cb275f78e2adaa00f1c54aElliott Hughes 953aef701da38d14bd479cb275f78e2adaa00f1c54aElliott Hughes // In native code somewhere in the VM (one of the kWaitingFor* states)? That's interesting. 954aef701da38d14bd479cb275f78e2adaa00f1c54aElliott Hughes if (state > kWaiting && state < kStarting) { 955aef701da38d14bd479cb275f78e2adaa00f1c54aElliott Hughes return true; 956aef701da38d14bd479cb275f78e2adaa00f1c54aElliott Hughes } 957aef701da38d14bd479cb275f78e2adaa00f1c54aElliott Hughes 958aef701da38d14bd479cb275f78e2adaa00f1c54aElliott Hughes // In an Object.wait variant or Thread.sleep? That's not interesting. 959aef701da38d14bd479cb275f78e2adaa00f1c54aElliott Hughes if (state == kTimedWaiting || state == kSleeping || state == kWaiting) { 960aef701da38d14bd479cb275f78e2adaa00f1c54aElliott Hughes return false; 961aef701da38d14bd479cb275f78e2adaa00f1c54aElliott Hughes } 962aef701da38d14bd479cb275f78e2adaa00f1c54aElliott Hughes 963aef701da38d14bd479cb275f78e2adaa00f1c54aElliott Hughes // In some other native method? That's interesting. 964aef701da38d14bd479cb275f78e2adaa00f1c54aElliott Hughes // We don't just check kNative because native methods will be in state kSuspended if they're 965aef701da38d14bd479cb275f78e2adaa00f1c54aElliott Hughes // calling back into the VM, or kBlocked if they're blocked on a monitor, or one of the 966aef701da38d14bd479cb275f78e2adaa00f1c54aElliott Hughes // thread-startup states if it's early enough in their life cycle (http://b/7432159). 9670aded089f565008ba5908e395e5914ca4f91f2deDave Allison mirror::ArtMethod* current_method = thread->GetCurrentMethod(nullptr); 9680aded089f565008ba5908e395e5914ca4f91f2deDave Allison return current_method != nullptr && current_method->IsNative(); 969aef701da38d14bd479cb275f78e2adaa00f1c54aElliott Hughes} 970aef701da38d14bd479cb275f78e2adaa00f1c54aElliott Hughes 971c751fdcc9491c1b60c3db517fbc41bb98e92441fMathieu Chartiervoid Thread::DumpJavaStack(std::ostream& os) const { 972700a402244a1a423da4f3ba8032459f4b65fa18fIan Rogers std::unique_ptr<Context> context(Context::Create()); 973c751fdcc9491c1b60c3db517fbc41bb98e92441fMathieu Chartier StackDumpVisitor dumper(os, const_cast<Thread*>(this), context.get(), 974c751fdcc9491c1b60c3db517fbc41bb98e92441fMathieu Chartier !tls32_.throwing_OutOfMemoryError); 975c751fdcc9491c1b60c3db517fbc41bb98e92441fMathieu Chartier dumper.WalkStack(); 976c751fdcc9491c1b60c3db517fbc41bb98e92441fMathieu Chartier} 977c751fdcc9491c1b60c3db517fbc41bb98e92441fMathieu Chartier 978d92bec457dc6c506c80e9da6b8e0c958266b5cdcElliott Hughesvoid Thread::DumpStack(std::ostream& os) const { 979ed1790e83352e54420018d1495eb010f7cd48a64Jeff Hao // TODO: we call this code when dying but may not have suspended the thread ourself. The 980ed1790e83352e54420018d1495eb010f7cd48a64Jeff Hao // IsSuspended check is therefore racy with the use for dumping (normally we inhibit 981ed1790e83352e54420018d1495eb010f7cd48a64Jeff Hao // the race with the thread_suspend_count_lock_). 982eef2e54113ba10cd76ddc368b928a2864401700eIan Rogers bool dump_for_abort = (gAborting > 0); 983eef2e54113ba10cd76ddc368b928a2864401700eIan Rogers bool safe_to_dump = (this == Thread::Current() || IsSuspended()); 984eef2e54113ba10cd76ddc368b928a2864401700eIan Rogers if (!kIsDebugBuild) { 985eef2e54113ba10cd76ddc368b928a2864401700eIan Rogers // We always want to dump the stack for an abort, however, there is no point dumping another 986eef2e54113ba10cd76ddc368b928a2864401700eIan Rogers // thread's stack in debug builds where we'll hit the not suspended check in the stack walk. 987eef2e54113ba10cd76ddc368b928a2864401700eIan Rogers safe_to_dump = (safe_to_dump || dump_for_abort); 988eef2e54113ba10cd76ddc368b928a2864401700eIan Rogers } 989eef2e54113ba10cd76ddc368b928a2864401700eIan Rogers if (safe_to_dump) { 990f08e473519dc5c7ccb85eb2b333f9d0aff23a329Ian Rogers // If we're currently in native code, dump that stack before dumping the managed stack. 991d090cf4f2420a228251e27dbae600f4f44ae2c57Ian Rogers if (dump_for_abort || ShouldShowNativeStack(this)) { 992f08e473519dc5c7ccb85eb2b333f9d0aff23a329Ian Rogers DumpKernelStack(os, GetTid(), " kernel: ", false); 993eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier DumpNativeStack(os, GetTid(), " native: ", GetCurrentMethod(nullptr)); 994f08e473519dc5c7ccb85eb2b333f9d0aff23a329Ian Rogers } 995c751fdcc9491c1b60c3db517fbc41bb98e92441fMathieu Chartier DumpJavaStack(os); 996f08e473519dc5c7ccb85eb2b333f9d0aff23a329Ian Rogers } else { 997f08e473519dc5c7ccb85eb2b333f9d0aff23a329Ian Rogers os << "Not able to dump stack of thread that isn't suspended"; 998f08e473519dc5c7ccb85eb2b333f9d0aff23a329Ian Rogers } 999e27955ca3ca960928d4dbd6cb79711fce06950b3Elliott Hughes} 1000e27955ca3ca960928d4dbd6cb79711fce06950b3Elliott Hughes 1001be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughesvoid Thread::ThreadExitCallback(void* arg) { 1002be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughes Thread* self = reinterpret_cast<Thread*>(arg); 1003dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers if (self->tls32_.thread_exit_check_count == 0) { 1004dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers LOG(WARNING) << "Native thread exiting without having called DetachCurrentThread (maybe it's " 1005dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers "going to use a pthread_key_create destructor?): " << *self; 10060878d654e7be8c9666579e22522704d8887415ccIan Rogers CHECK(is_started_); 10076a607ad0902f3b8478e95d0b6b3e63a538571a3fElliott Hughes CHECK_PTHREAD_CALL(pthread_setspecific, (Thread::pthread_key_self_, self), "reattach self"); 1008dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers self->tls32_.thread_exit_check_count = 1; 10096a607ad0902f3b8478e95d0b6b3e63a538571a3fElliott Hughes } else { 10106a607ad0902f3b8478e95d0b6b3e63a538571a3fElliott Hughes LOG(FATAL) << "Native thread exited without calling DetachCurrentThread: " << *self; 10116a607ad0902f3b8478e95d0b6b3e63a538571a3fElliott Hughes } 1012b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro} 1013b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 1014be759c63c6bb58b76ac71cad2c5a736bd31f374dElliott Hughesvoid Thread::Startup() { 10150878d654e7be8c9666579e22522704d8887415ccIan Rogers CHECK(!is_started_); 10160878d654e7be8c9666579e22522704d8887415ccIan Rogers is_started_ = true; 101700f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers { 10186d69f592696f3bbd3bb0978ae3b25f2c359aac0dBrian Carlstrom // MutexLock to keep annotalysis happy. 10196d69f592696f3bbd3bb0978ae3b25f2c359aac0dBrian Carlstrom // 10200aded089f565008ba5908e395e5914ca4f91f2deDave Allison // Note we use nullptr for the thread because Thread::Current can 10216d69f592696f3bbd3bb0978ae3b25f2c359aac0dBrian Carlstrom // return garbage since (is_started_ == true) and 10226d69f592696f3bbd3bb0978ae3b25f2c359aac0dBrian Carlstrom // Thread::pthread_key_self_ is not yet initialized. 10236d69f592696f3bbd3bb0978ae3b25f2c359aac0dBrian Carlstrom // This was seen on glibc. 10240aded089f565008ba5908e395e5914ca4f91f2deDave Allison MutexLock mu(nullptr, *Locks::thread_suspend_count_lock_); 1025c604d731730b43231f63040c8db1d58304da0cf3Ian Rogers resume_cond_ = new ConditionVariable("Thread resumption condition variable", 1026c604d731730b43231f63040c8db1d58304da0cf3Ian Rogers *Locks::thread_suspend_count_lock_); 102700f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 102800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 1029b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro // Allocate a TLS slot. 10308d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes CHECK_PTHREAD_CALL(pthread_key_create, (&Thread::pthread_key_self_, Thread::ThreadExitCallback), "self key"); 1031b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 1032b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro // Double-check the TLS slot allocation. 10330aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (pthread_getspecific(pthread_key_self_) != nullptr) { 10340aded089f565008ba5908e395e5914ca4f91f2deDave Allison LOG(FATAL) << "Newly-created pthread TLS slot is not nullptr"; 1035b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro } 1036038a806df72f884d22283a84a31c9a1d35ba1fdfElliott Hughes} 1037038a806df72f884d22283a84a31c9a1d35ba1fdfElliott Hughes 1038038a806df72f884d22283a84a31c9a1d35ba1fdfElliott Hughesvoid Thread::FinishStartup() { 1039365c10235438607541fa2259a5fec48061b90bd8Ian Rogers Runtime* runtime = Runtime::Current(); 1040365c10235438607541fa2259a5fec48061b90bd8Ian Rogers CHECK(runtime->IsStarted()); 1041b82b6878fb000d4731063b1bf15c39ff7c50b61fBrian Carlstrom 104201158d7a57c8321370667a6045220237d16e0da8Elliott Hughes // Finish attaching the main thread. 104300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers ScopedObjectAccess soa(Thread::Current()); 1044365c10235438607541fa2259a5fec48061b90bd8Ian Rogers Thread::Current()->CreatePeer("main", false, runtime->GetMainThreadGroup()); 10459a6bae896a2f003d7216603bf29771d105c10ca4Jesse Wilson 1046af8d15a3267343dec135cc6df1db740c0a5c7b52Elliott Hughes Runtime::Current()->GetClassLinker()->RunRootClinits(); 1047b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro} 1048b557353b22c728eecbd1c68593b482622c7782a8Carl Shapiro 1049c1674ed06662420213441ff2b818f2f71f9098dcElliott Hughesvoid Thread::Shutdown() { 10500878d654e7be8c9666579e22522704d8887415ccIan Rogers CHECK(is_started_); 10510878d654e7be8c9666579e22522704d8887415ccIan Rogers is_started_ = false; 10528d768a954b101a9532f980253ac46be2c53aba11Elliott Hughes CHECK_PTHREAD_CALL(pthread_key_delete, (Thread::pthread_key_self_), "self key"); 105333e9566255c426e7a2c8fca5b8a1b6a94a5d352cIan Rogers MutexLock mu(Thread::Current(), *Locks::thread_suspend_count_lock_); 10540aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (resume_cond_ != nullptr) { 10550878d654e7be8c9666579e22522704d8887415ccIan Rogers delete resume_cond_; 10560aded089f565008ba5908e395e5914ca4f91f2deDave Allison resume_cond_ = nullptr; 10570878d654e7be8c9666579e22522704d8887415ccIan Rogers } 1058c1674ed06662420213441ff2b818f2f71f9098dcElliott Hughes} 1059c1674ed06662420213441ff2b818f2f71f9098dcElliott Hughes 1060dd7624d2b9e599d57762d12031b10b89defc9807Ian RogersThread::Thread(bool daemon) : tls32_(daemon), wait_monitor_(nullptr), interrupted_(false) { 1061dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers wait_mutex_ = new Mutex("a thread wait mutex"); 1062dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers wait_cond_ = new ConditionVariable("a thread wait condition variable", *wait_mutex_); 1063dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.debug_invoke_req = new DebugInvokeReq; 1064dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.single_step_control = new SingleStepControl; 1065dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.instrumentation_stack = new std::deque<instrumentation::InstrumentationStackFrame>; 1066dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.name = new std::string(kThreadNameDuringStartup); 1067dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers 1068f5a7a476e7ea63e094ff0f011dccc170607e6f6bElliott Hughes CHECK_EQ((sizeof(Thread) % 4), 0U) << sizeof(Thread); 1069dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tls32_.state_and_flags.as_struct.flags = 0; 1070dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tls32_.state_and_flags.as_struct.state = kNative; 1071dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers memset(&tlsPtr_.held_mutexes[0], 0, sizeof(tlsPtr_.held_mutexes)); 10720651d41e41341fb2e9ef3ee41dc1f1bfc832dbbbMathieu Chartier std::fill(tlsPtr_.rosalloc_runs, 1073e63db27db913f1a88e2095a1ee8239b2bb9124e8Ian Rogers tlsPtr_.rosalloc_runs + kNumRosAllocThreadLocalSizeBrackets, 107473d1e17b3afc7d5e56184f90bf819dc64956448aMathieu Chartier gc::allocator::RosAlloc::GetDedicatedFullRun()); 10750aded089f565008ba5908e395e5914ca4f91f2deDave Allison for (uint32_t i = 0; i < kMaxCheckpoints; ++i) { 1076dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.checkpoint_functions[i] = nullptr; 10770aded089f565008ba5908e395e5914ca4f91f2deDave Allison } 1078dcc247493fd8fb243e335c3ec08e5e625896a47cElliott Hughes} 1079dcc247493fd8fb243e335c3ec08e5e625896a47cElliott Hughes 10807dc5166ea740359d381097a7ab382c1dd404055fElliott Hughesbool Thread::IsStillStarting() const { 10817dc5166ea740359d381097a7ab382c1dd404055fElliott Hughes // You might think you can check whether the state is kStarting, but for much of thread startup, 108280537bb742dff4ccdf6d04b1c0bb7d2179acc8cbElliott Hughes // the thread is in kNative; it might also be in kVmWait. 10830aded089f565008ba5908e395e5914ca4f91f2deDave Allison // You might think you can check whether the peer is nullptr, but the peer is actually created and 10847dc5166ea740359d381097a7ab382c1dd404055fElliott Hughes // assigned fairly early on, and needs to be. 10857dc5166ea740359d381097a7ab382c1dd404055fElliott Hughes // It turns out that the last thing to change is the thread name; that's a good proxy for "has 10867dc5166ea740359d381097a7ab382c1dd404055fElliott Hughes // this thread _ever_ entered kRunnable". 1087dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers return (tlsPtr_.jpeer == nullptr && tlsPtr_.opeer == nullptr) || 1088dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers (*tlsPtr_.name == kThreadNameDuringStartup); 10897dc5166ea740359d381097a7ab382c1dd404055fElliott Hughes} 10907dc5166ea740359d381097a7ab382c1dd404055fElliott Hughes 109100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogersvoid Thread::AssertNoPendingException() const { 109200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers if (UNLIKELY(IsExceptionPending())) { 109300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers ScopedObjectAccess soa(Thread::Current()); 10940aded089f565008ba5908e395e5914ca4f91f2deDave Allison mirror::Throwable* exception = GetException(nullptr); 109500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers LOG(FATAL) << "No pending exception expected: " << exception->Dump(); 109600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 109700f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers} 109800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 10998d7672e476a526aa6205a008b5a06c8216342ac6Mathieu Chartiervoid Thread::AssertNoPendingExceptionForNewException(const char* msg) const { 11008d7672e476a526aa6205a008b5a06c8216342ac6Mathieu Chartier if (UNLIKELY(IsExceptionPending())) { 11018d7672e476a526aa6205a008b5a06c8216342ac6Mathieu Chartier ScopedObjectAccess soa(Thread::Current()); 11028d7672e476a526aa6205a008b5a06c8216342ac6Mathieu Chartier mirror::Throwable* exception = GetException(nullptr); 1103c114b5fbc91e6d19ef430d9bc3468386ca61b324Ian Rogers LOG(FATAL) << "Throwing new exception '" << msg << "' with unexpected pending exception: " 11048d7672e476a526aa6205a008b5a06c8216342ac6Mathieu Chartier << exception->Dump(); 11058d7672e476a526aa6205a008b5a06c8216342ac6Mathieu Chartier } 11068d7672e476a526aa6205a008b5a06c8216342ac6Mathieu Chartier} 11078d7672e476a526aa6205a008b5a06c8216342ac6Mathieu Chartier 1108815873ecc312b1d231acce71e1a16f42cdaf09f2Mathieu Chartierstatic void MonitorExitVisitor(mirror::Object** object, void* arg, uint32_t /*thread_id*/, 1109815873ecc312b1d231acce71e1a16f42cdaf09f2Mathieu Chartier RootType /*root_type*/) 1110423d2a3dcbb260b020efb5da59f784c9f02accbfMathieu Chartier NO_THREAD_SAFETY_ANALYSIS { 111100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers Thread* self = reinterpret_cast<Thread*>(arg); 1112815873ecc312b1d231acce71e1a16f42cdaf09f2Mathieu Chartier mirror::Object* entered_monitor = *object; 111300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers if (self->HoldsLock(entered_monitor)) { 111400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers LOG(WARNING) << "Calling MonitorExit on object " 1115815873ecc312b1d231acce71e1a16f42cdaf09f2Mathieu Chartier << object << " (" << PrettyTypeOf(entered_monitor) << ")" 111600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers << " left locked by native thread " 111700f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers << *Thread::Current() << " which is detaching"; 111800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers entered_monitor->MonitorExit(self); 111900f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 112002b48d1dae0c3adc01ef6668226fb648fb52990aElliott Hughes} 112102b48d1dae0c3adc01ef6668226fb648fb52990aElliott Hughes 1122c0f0933249cf516b37717faa766e1e9808f7c1f8Elliott Hughesvoid Thread::Destroy() { 1123120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers Thread* self = this; 1124120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers DCHECK_EQ(self, Thread::Current()); 112502b48d1dae0c3adc01ef6668226fb648fb52990aElliott Hughes 1126dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers if (tlsPtr_.opeer != nullptr) { 1127cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers ScopedObjectAccess soa(self); 1128120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers // We may need to call user-supplied managed code, do this before final clean-up. 1129cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers HandleUncaughtExceptions(soa); 1130cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers RemoveFromThreadGroup(soa); 1131534da072d3db3beecbd74e5aa23d630d73695f2cElliott Hughes 11323c50a4b4ba6d7d9369ee9a0bd6d30bf4c9c79bb0Anwar Ghuloum // this.nativePeer = 0; 1133d2fe10a3a34af171bf1631219cd2d6ff6b7778b5Sebastien Hertz if (Runtime::Current()->IsActiveTransaction()) { 1134dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers soa.DecodeField(WellKnownClasses::java_lang_Thread_nativePeer) 1135dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers ->SetLong<true>(tlsPtr_.opeer, 0); 1136d2fe10a3a34af171bf1631219cd2d6ff6b7778b5Sebastien Hertz } else { 1137dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers soa.DecodeField(WellKnownClasses::java_lang_Thread_nativePeer) 1138dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers ->SetLong<false>(tlsPtr_.opeer, 0); 1139d2fe10a3a34af171bf1631219cd2d6ff6b7778b5Sebastien Hertz } 1140cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers Dbg::PostThreadDeath(self); 114102b48d1dae0c3adc01ef6668226fb648fb52990aElliott Hughes 1142cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers // Thread.join() is implemented as an Object.wait() on the Thread.lock object. Signal anyone 1143cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers // who is waiting. 11442dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers mirror::Object* lock = 1145dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers soa.DecodeField(WellKnownClasses::java_lang_Thread_lock)->GetObject(tlsPtr_.opeer); 1146038a806df72f884d22283a84a31c9a1d35ba1fdfElliott Hughes // (This conditional is only needed for tests, where Thread.lock won't have been set.) 1147c528dba35b5faece51ca658fc008b688f8b690adMathieu Chartier if (lock != nullptr) { 1148eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier StackHandleScope<1> hs(self); 1149eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier Handle<mirror::Object> h_obj(hs.NewHandle(lock)); 1150db2633ce0358c704f97130a94b582602cb01d14aMathieu Chartier ObjectLock<mirror::Object> locker(self, h_obj); 115163e8a68c9a2cdbbe9bfd8d200610119dd359ee59Yevgeny Rouban locker.NotifyAll(); 11525f79133a435ebcb20000370d56046fe01201dd80Elliott Hughes } 11535f79133a435ebcb20000370d56046fe01201dd80Elliott Hughes } 1154120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers 1155120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers // On thread detach, all monitors entered with JNI MonitorEnter are automatically exited. 1156dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers if (tlsPtr_.jni_env != nullptr) { 1157dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.jni_env->monitors.VisitRoots(MonitorExitVisitor, self, 0, kRootVMInternal); 1158120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers } 1159c0f0933249cf516b37717faa766e1e9808f7c1f8Elliott Hughes} 116002b48d1dae0c3adc01ef6668226fb648fb52990aElliott Hughes 1161c0f0933249cf516b37717faa766e1e9808f7c1f8Elliott HughesThread::~Thread() { 1162dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers if (tlsPtr_.jni_env != nullptr && tlsPtr_.jpeer != nullptr) { 1163dbe6f4613ae0161b169f4fca8a616b0b393370abMathieu Chartier // If pthread_create fails we don't have a jni env here. 1164dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.jni_env->DeleteGlobalRef(tlsPtr_.jpeer); 1165dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.jpeer = nullptr; 1166dbe6f4613ae0161b169f4fca8a616b0b393370abMathieu Chartier } 1167dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.opeer = nullptr; 1168dbe6f4613ae0161b169f4fca8a616b0b393370abMathieu Chartier 1169dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers bool initialized = (tlsPtr_.jni_env != nullptr); // Did Thread::Init run? 11701efa0a9d6cd5f5b40b8a21d39f1103a3610250eeAlexei Zavjalov if (initialized) { 1171dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers delete tlsPtr_.jni_env; 1172dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.jni_env = nullptr; 11731efa0a9d6cd5f5b40b8a21d39f1103a3610250eeAlexei Zavjalov } 1174dbe6f4613ae0161b169f4fca8a616b0b393370abMathieu Chartier CHECK_NE(GetState(), kRunnable); 11750aded089f565008ba5908e395e5914ca4f91f2deDave Allison CHECK_NE(ReadFlag(kCheckpointRequest), true); 1176dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers CHECK(tlsPtr_.checkpoint_functions[0] == nullptr); 1177dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers CHECK(tlsPtr_.checkpoint_functions[1] == nullptr); 1178dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers CHECK(tlsPtr_.checkpoint_functions[2] == nullptr); 11790aded089f565008ba5908e395e5914ca4f91f2deDave Allison 1180dbe6f4613ae0161b169f4fca8a616b0b393370abMathieu Chartier // We may be deleting a still born thread. 1181dbe6f4613ae0161b169f4fca8a616b0b393370abMathieu Chartier SetStateUnsafe(kTerminated); 118285d1545e985ac689db4bad7849880e843707c862Elliott Hughes 118385d1545e985ac689db4bad7849880e843707c862Elliott Hughes delete wait_cond_; 118485d1545e985ac689db4bad7849880e843707c862Elliott Hughes delete wait_mutex_; 118585d1545e985ac689db4bad7849880e843707c862Elliott Hughes 1186dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers if (tlsPtr_.long_jump_context != nullptr) { 1187dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers delete tlsPtr_.long_jump_context; 1188c928de90ad22ecdf83c18a07008409595f13d3b1Ian Rogers } 1189475fc23a4a7f35d1be87ea0b06c80df317a720acElliott Hughes 11901efa0a9d6cd5f5b40b8a21d39f1103a3610250eeAlexei Zavjalov if (initialized) { 11911efa0a9d6cd5f5b40b8a21d39f1103a3610250eeAlexei Zavjalov CleanupCpu(); 11921efa0a9d6cd5f5b40b8a21d39f1103a3610250eeAlexei Zavjalov } 11931efa0a9d6cd5f5b40b8a21d39f1103a3610250eeAlexei Zavjalov 1194dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers delete tlsPtr_.debug_invoke_req; 1195dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers delete tlsPtr_.single_step_control; 1196dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers delete tlsPtr_.instrumentation_stack; 1197dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers delete tlsPtr_.name; 1198dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers delete tlsPtr_.stack_trace_sample; 1199d8af1592a97f7447ecf93f85098cb36340ab0fe2Elliott Hughes 1200cf58d4adf461eb9b8e84baa8019054c88cd8acc6Hiroshi Yamauchi Runtime::Current()->GetHeap()->RevokeThreadLocalBuffers(this); 1201cf58d4adf461eb9b8e84baa8019054c88cd8acc6Hiroshi Yamauchi 1202d8af1592a97f7447ecf93f85098cb36340ab0fe2Elliott Hughes TearDownAlternateSignalStack(); 1203c1674ed06662420213441ff2b818f2f71f9098dcElliott Hughes} 1204c1674ed06662420213441ff2b818f2f71f9098dcElliott Hughes 1205cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogersvoid Thread::HandleUncaughtExceptions(ScopedObjectAccess& soa) { 1206accd83d1523545ac69bafd38e72a7d5cff8e2facElliott Hughes if (!IsExceptionPending()) { 1207accd83d1523545ac69bafd38e72a7d5cff8e2facElliott Hughes return; 1208accd83d1523545ac69bafd38e72a7d5cff8e2facElliott Hughes } 1209dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers ScopedLocalRef<jobject> peer(tlsPtr_.jni_env, soa.AddLocalReference<jobject>(tlsPtr_.opeer)); 1210cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers ScopedThreadStateChange tsc(this, kNative); 1211120f1c74a9768e958377b6c97897511b27ae58c8Ian Rogers 1212accd83d1523545ac69bafd38e72a7d5cff8e2facElliott Hughes // Get and clear the exception. 1213dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers ScopedLocalRef<jthrowable> exception(tlsPtr_.jni_env, tlsPtr_.jni_env->ExceptionOccurred()); 1214dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.jni_env->ExceptionClear(); 1215accd83d1523545ac69bafd38e72a7d5cff8e2facElliott Hughes 1216accd83d1523545ac69bafd38e72a7d5cff8e2facElliott Hughes // If the thread has its own handler, use that. 1217dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers ScopedLocalRef<jobject> handler(tlsPtr_.jni_env, 1218dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.jni_env->GetObjectField(peer.get(), 1219dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers WellKnownClasses::java_lang_Thread_uncaughtHandler)); 12200aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (handler.get() == nullptr) { 1221accd83d1523545ac69bafd38e72a7d5cff8e2facElliott Hughes // Otherwise use the thread group's default handler. 1222dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers handler.reset(tlsPtr_.jni_env->GetObjectField(peer.get(), 1223dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers WellKnownClasses::java_lang_Thread_group)); 1224accd83d1523545ac69bafd38e72a7d5cff8e2facElliott Hughes } 1225accd83d1523545ac69bafd38e72a7d5cff8e2facElliott Hughes 1226accd83d1523545ac69bafd38e72a7d5cff8e2facElliott Hughes // Call the handler. 1227dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.jni_env->CallVoidMethod(handler.get(), 1228dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers WellKnownClasses::java_lang_Thread$UncaughtExceptionHandler_uncaughtException, 1229dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers peer.get(), exception.get()); 1230accd83d1523545ac69bafd38e72a7d5cff8e2facElliott Hughes 1231accd83d1523545ac69bafd38e72a7d5cff8e2facElliott Hughes // If the handler threw, clear that exception too. 1232dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.jni_env->ExceptionClear(); 1233a215526d5c789cbef0f81a1f9aba22541a841ccaElliott Hughes} 1234a215526d5c789cbef0f81a1f9aba22541a841ccaElliott Hughes 1235cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogersvoid Thread::RemoveFromThreadGroup(ScopedObjectAccess& soa) { 12364514d3c0e69a49f5dbe19138330a2bb2aee36d63Brian Carlstrom // this.group.removeThread(this); 12374514d3c0e69a49f5dbe19138330a2bb2aee36d63Brian Carlstrom // group can be null if we're in the compiler or a test. 1238dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers mirror::Object* ogroup = soa.DecodeField(WellKnownClasses::java_lang_Thread_group) 1239dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers ->GetObject(tlsPtr_.opeer); 12400aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (ogroup != nullptr) { 1241cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers ScopedLocalRef<jobject> group(soa.Env(), soa.AddLocalReference<jobject>(ogroup)); 1242dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers ScopedLocalRef<jobject> peer(soa.Env(), soa.AddLocalReference<jobject>(tlsPtr_.opeer)); 1243cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers ScopedThreadStateChange tsc(soa.Self(), kNative); 1244dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.jni_env->CallVoidMethod(group.get(), 1245dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers WellKnownClasses::java_lang_ThreadGroup_removeThread, 1246dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers peer.get()); 12474514d3c0e69a49f5dbe19138330a2bb2aee36d63Brian Carlstrom } 12484514d3c0e69a49f5dbe19138330a2bb2aee36d63Brian Carlstrom} 1249accd83d1523545ac69bafd38e72a7d5cff8e2facElliott Hughes 1250eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartiersize_t Thread::NumHandleReferences() { 1251a8cd9f4a849835af7856f9c9782ea59e11ddef85Ian Rogers size_t count = 0; 1252eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier for (HandleScope* cur = tlsPtr_.top_handle_scope; cur; cur = cur->GetLink()) { 1253a8cd9f4a849835af7856f9c9782ea59e11ddef85Ian Rogers count += cur->NumberOfReferences(); 1254a8cd9f4a849835af7856f9c9782ea59e11ddef85Ian Rogers } 1255a8cd9f4a849835af7856f9c9782ea59e11ddef85Ian Rogers return count; 1256a8cd9f4a849835af7856f9c9782ea59e11ddef85Ian Rogers} 1257a8cd9f4a849835af7856f9c9782ea59e11ddef85Ian Rogers 1258eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartierbool Thread::HandleScopeContains(jobject obj) const { 1259eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier StackReference<mirror::Object>* hs_entry = 1260ef7d42fca18c16fbaf103822ad16f23246e2905dIan Rogers reinterpret_cast<StackReference<mirror::Object>*>(obj); 1261eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier for (HandleScope* cur = tlsPtr_.top_handle_scope; cur; cur = cur->GetLink()) { 1262eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier if (cur->Contains(hs_entry)) { 1263a8cd9f4a849835af7856f9c9782ea59e11ddef85Ian Rogers return true; 1264a8cd9f4a849835af7856f9c9782ea59e11ddef85Ian Rogers } 1265a8cd9f4a849835af7856f9c9782ea59e11ddef85Ian Rogers } 1266eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier // JNI code invoked from portable code uses shadow frames rather than the handle scope. 1267eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier return tlsPtr_.managed_stack.ShadowFramesContain(hs_entry); 126828f1a147d77ec772db98bed890b50a9ddcff2365TDYa} 126928f1a147d77ec772db98bed890b50a9ddcff2365TDYa 1270eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartiervoid Thread::HandleScopeVisitRoots(RootCallback* visitor, void* arg, uint32_t thread_id) { 1271eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier for (HandleScope* cur = tlsPtr_.top_handle_scope; cur; cur = cur->GetLink()) { 12728dfc9d551a9603eb8bc8463621b7bc73c3035169Shih-wei Liao size_t num_refs = cur->NumberOfReferences(); 12730aded089f565008ba5908e395e5914ca4f91f2deDave Allison for (size_t j = 0; j < num_refs; ++j) { 12742dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers mirror::Object* object = cur->GetReference(j); 1275423d2a3dcbb260b020efb5da59f784c9f02accbfMathieu Chartier if (object != nullptr) { 1276815873ecc312b1d231acce71e1a16f42cdaf09f2Mathieu Chartier mirror::Object* old_obj = object; 1277815873ecc312b1d231acce71e1a16f42cdaf09f2Mathieu Chartier visitor(&object, arg, thread_id, kRootNativeStack); 1278815873ecc312b1d231acce71e1a16f42cdaf09f2Mathieu Chartier if (old_obj != object) { 1279815873ecc312b1d231acce71e1a16f42cdaf09f2Mathieu Chartier cur->SetReference(j, object); 1280423d2a3dcbb260b020efb5da59f784c9f02accbfMathieu Chartier } 12815e73f9c8990819054f8e0a60061ee8beff1e024aBrian Carlstrom } 12828dfc9d551a9603eb8bc8463621b7bc73c3035169Shih-wei Liao } 12838dfc9d551a9603eb8bc8463621b7bc73c3035169Shih-wei Liao } 12848dfc9d551a9603eb8bc8463621b7bc73c3035169Shih-wei Liao} 12858dfc9d551a9603eb8bc8463621b7bc73c3035169Shih-wei Liao 12862dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogersmirror::Object* Thread::DecodeJObject(jobject obj) const { 128781d425b0b232962441616f8b14f73620bffef5e5Ian Rogers Locks::mutator_lock_->AssertSharedHeld(this); 12880aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (obj == nullptr) { 12890aded089f565008ba5908e395e5914ca4f91f2deDave Allison return nullptr; 1290408f79aeb676251ba35667a64e86c20638d7cb0bIan Rogers } 1291408f79aeb676251ba35667a64e86c20638d7cb0bIan Rogers IndirectRef ref = reinterpret_cast<IndirectRef>(obj); 1292408f79aeb676251ba35667a64e86c20638d7cb0bIan Rogers IndirectRefKind kind = GetIndirectRefKind(ref); 12932dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers mirror::Object* result; 12944f6ad8ab428038129b2d0d6c40b7fd625cca15e1Ian Rogers // The "kinds" below are sorted by the frequency we expect to encounter them. 12954f6ad8ab428038129b2d0d6c40b7fd625cca15e1Ian Rogers if (kind == kLocal) { 1296dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers IndirectReferenceTable& locals = tlsPtr_.jni_env->locals; 1297196851b634a5bfdd8ab3fb59a320e550b21b0f4dHiroshi Yamauchi // Local references do not need a read barrier. 1298196851b634a5bfdd8ab3fb59a320e550b21b0f4dHiroshi Yamauchi result = locals.Get<kWithoutReadBarrier>(ref); 1299eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier } else if (kind == kHandleScopeOrInvalid) { 1300ef7d42fca18c16fbaf103822ad16f23246e2905dIan Rogers // TODO: make stack indirect reference table lookup more efficient. 1301eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier // Check if this is a local reference in the handle scope. 1302eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier if (LIKELY(HandleScopeContains(obj))) { 1303eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier // Read from handle scope. 1304ef7d42fca18c16fbaf103822ad16f23246e2905dIan Rogers result = reinterpret_cast<StackReference<mirror::Object>*>(obj)->AsMirrorPtr(); 1305c645f1ddb7c40bea6a38eda4b3f83f6b6dec405bMathieu Chartier VerifyObject(result); 1306408f79aeb676251ba35667a64e86c20638d7cb0bIan Rogers } else { 1307a2501990dd0f68baf38ce19251949d7bb3ecfe5aElliott Hughes result = kInvalidIndirectRefObject; 1308408f79aeb676251ba35667a64e86c20638d7cb0bIan Rogers } 13094f6ad8ab428038129b2d0d6c40b7fd625cca15e1Ian Rogers } else if (kind == kGlobal) { 1310c56057e40938c587a74984651a510e320a8cb4fdMathieu Chartier JavaVMExt* const vm = Runtime::Current()->GetJavaVM(); 1311ea2e1bd713ca8295ba4fcd01e77a3ce532ea61e4Hiroshi Yamauchi result = vm->globals.SynchronizedGet(const_cast<Thread*>(this), &vm->globals_lock, ref); 13124f6ad8ab428038129b2d0d6c40b7fd625cca15e1Ian Rogers } else { 13134f6ad8ab428038129b2d0d6c40b7fd625cca15e1Ian Rogers DCHECK_EQ(kind, kWeakGlobal); 1314c11d9b8870de5f860b13c84003ade7b3f3125a52Mathieu Chartier result = Runtime::Current()->GetJavaVM()->DecodeWeakGlobal(const_cast<Thread*>(this), ref); 13154f6ad8ab428038129b2d0d6c40b7fd625cca15e1Ian Rogers if (result == kClearedJniWeakGlobal) { 13160aded089f565008ba5908e395e5914ca4f91f2deDave Allison // This is a special case where it's okay to return nullptr. 1317e8c48db6bb507d7fa20c78481c58c23be0045f67Mathieu Chartier return nullptr; 13184f6ad8ab428038129b2d0d6c40b7fd625cca15e1Ian Rogers } 1319408f79aeb676251ba35667a64e86c20638d7cb0bIan Rogers } 1320408f79aeb676251ba35667a64e86c20638d7cb0bIan Rogers 13210aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (UNLIKELY(result == nullptr)) { 13220aded089f565008ba5908e395e5914ca4f91f2deDave Allison JniAbortF(nullptr, "use of deleted %s %p", ToStr<IndirectRefKind>(kind).c_str(), obj); 1323408f79aeb676251ba35667a64e86c20638d7cb0bIan Rogers } 1324408f79aeb676251ba35667a64e86c20638d7cb0bIan Rogers return result; 1325408f79aeb676251ba35667a64e86c20638d7cb0bIan Rogers} 1326408f79aeb676251ba35667a64e86c20638d7cb0bIan Rogers 132781d425b0b232962441616f8b14f73620bffef5e5Ian Rogers// Implements java.lang.Thread.interrupted. 132881d425b0b232962441616f8b14f73620bffef5e5Ian Rogersbool Thread::Interrupted() { 132950b35e2fd1a68cd1240e4a9d9f363e11764957d1Ian Rogers MutexLock mu(Thread::Current(), *wait_mutex_); 1330dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers bool interrupted = IsInterruptedLocked(); 1331dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers SetInterruptedLocked(false); 133281d425b0b232962441616f8b14f73620bffef5e5Ian Rogers return interrupted; 133381d425b0b232962441616f8b14f73620bffef5e5Ian Rogers} 133481d425b0b232962441616f8b14f73620bffef5e5Ian Rogers 133581d425b0b232962441616f8b14f73620bffef5e5Ian Rogers// Implements java.lang.Thread.isInterrupted. 133681d425b0b232962441616f8b14f73620bffef5e5Ian Rogersbool Thread::IsInterrupted() { 133750b35e2fd1a68cd1240e4a9d9f363e11764957d1Ian Rogers MutexLock mu(Thread::Current(), *wait_mutex_); 1338dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers return IsInterruptedLocked(); 133981d425b0b232962441616f8b14f73620bffef5e5Ian Rogers} 134081d425b0b232962441616f8b14f73620bffef5e5Ian Rogers 1341dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogersvoid Thread::Interrupt(Thread* self) { 1342c604d731730b43231f63040c8db1d58304da0cf3Ian Rogers MutexLock mu(self, *wait_mutex_); 134381d425b0b232962441616f8b14f73620bffef5e5Ian Rogers if (interrupted_) { 134481d425b0b232962441616f8b14f73620bffef5e5Ian Rogers return; 134581d425b0b232962441616f8b14f73620bffef5e5Ian Rogers } 134681d425b0b232962441616f8b14f73620bffef5e5Ian Rogers interrupted_ = true; 1347c604d731730b43231f63040c8db1d58304da0cf3Ian Rogers NotifyLocked(self); 134881d425b0b232962441616f8b14f73620bffef5e5Ian Rogers} 134981d425b0b232962441616f8b14f73620bffef5e5Ian Rogers 135081d425b0b232962441616f8b14f73620bffef5e5Ian Rogersvoid Thread::Notify() { 1351c604d731730b43231f63040c8db1d58304da0cf3Ian Rogers Thread* self = Thread::Current(); 1352c604d731730b43231f63040c8db1d58304da0cf3Ian Rogers MutexLock mu(self, *wait_mutex_); 1353c604d731730b43231f63040c8db1d58304da0cf3Ian Rogers NotifyLocked(self); 135481d425b0b232962441616f8b14f73620bffef5e5Ian Rogers} 135581d425b0b232962441616f8b14f73620bffef5e5Ian Rogers 1356c604d731730b43231f63040c8db1d58304da0cf3Ian Rogersvoid Thread::NotifyLocked(Thread* self) { 13570aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (wait_monitor_ != nullptr) { 1358c604d731730b43231f63040c8db1d58304da0cf3Ian Rogers wait_cond_->Signal(self); 135981d425b0b232962441616f8b14f73620bffef5e5Ian Rogers } 136081d425b0b232962441616f8b14f73620bffef5e5Ian Rogers} 136181d425b0b232962441616f8b14f73620bffef5e5Ian Rogers 13620399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogersclass CountStackDepthVisitor : public StackVisitor { 13639b576b4ed1dbe035952f3106d8f4b6993125ed6fShih-wei Liao public: 136493ba893c20532990a430741e0a97212900094e8cBrian Carlstrom explicit CountStackDepthVisitor(Thread* thread) 1365b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) 13660aded089f565008ba5908e395e5914ca4f91f2deDave Allison : StackVisitor(thread, nullptr), 136708fc03ae5dded4adc9b45b7014a4b9dfedbe95a6Elliott Hughes depth_(0), skip_depth_(0), skipping_(true) {} 1368d369bb76dee0df2d2a106e9bf7f4e6446ed6deaaElliott Hughes 1369b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers bool VisitFrame() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 137029f2742a478e4f5bd2ec7473410c5e5e7134a6f2Elliott Hughes // We want to skip frames up to and including the exception's constructor. 13719086572fa809d1a19d886b467e4da3ce42016982Ian Rogers // Note we also skip the frame if it doesn't have a method (namely the callee 13729086572fa809d1a19d886b467e4da3ce42016982Ian Rogers // save frame) 1373ea46f950e7a51585db293cd7f047de190a482414Brian Carlstrom mirror::ArtMethod* m = GetMethod(); 13740399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers if (skipping_ && !m->IsRuntimeMethod() && 13752dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers !mirror::Throwable::GetJavaLangThrowable()->IsAssignableFrom(m->GetDeclaringClass())) { 137629f2742a478e4f5bd2ec7473410c5e5e7134a6f2Elliott Hughes skipping_ = false; 137729f2742a478e4f5bd2ec7473410c5e5e7134a6f2Elliott Hughes } 137829f2742a478e4f5bd2ec7473410c5e5e7134a6f2Elliott Hughes if (!skipping_) { 13790399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers if (!m->IsRuntimeMethod()) { // Ignore runtime frames (in particular callee save). 13806b0870dfaaa2e69a900ad7ed88e4e1d3697445aaIan Rogers ++depth_; 13816b0870dfaaa2e69a900ad7ed88e4e1d3697445aaIan Rogers } 138229f2742a478e4f5bd2ec7473410c5e5e7134a6f2Elliott Hughes } else { 138329f2742a478e4f5bd2ec7473410c5e5e7134a6f2Elliott Hughes ++skip_depth_; 138429f2742a478e4f5bd2ec7473410c5e5e7134a6f2Elliott Hughes } 1385530fa005e2944d3b12712f80d974f0e753f568efElliott Hughes return true; 13869b576b4ed1dbe035952f3106d8f4b6993125ed6fShih-wei Liao } 13879b576b4ed1dbe035952f3106d8f4b6993125ed6fShih-wei Liao 13889b576b4ed1dbe035952f3106d8f4b6993125ed6fShih-wei Liao int GetDepth() const { 1389aaa208006d7c8cc0f381c4aa9b525be24066c495Ian Rogers return depth_; 13909b576b4ed1dbe035952f3106d8f4b6993125ed6fShih-wei Liao } 13919b576b4ed1dbe035952f3106d8f4b6993125ed6fShih-wei Liao 139229f2742a478e4f5bd2ec7473410c5e5e7134a6f2Elliott Hughes int GetSkipDepth() const { 139329f2742a478e4f5bd2ec7473410c5e5e7134a6f2Elliott Hughes return skip_depth_; 139429f2742a478e4f5bd2ec7473410c5e5e7134a6f2Elliott Hughes } 139529f2742a478e4f5bd2ec7473410c5e5e7134a6f2Elliott Hughes 13969b576b4ed1dbe035952f3106d8f4b6993125ed6fShih-wei Liao private: 1397aaa208006d7c8cc0f381c4aa9b525be24066c495Ian Rogers uint32_t depth_; 139829f2742a478e4f5bd2ec7473410c5e5e7134a6f2Elliott Hughes uint32_t skip_depth_; 139929f2742a478e4f5bd2ec7473410c5e5e7134a6f2Elliott Hughes bool skipping_; 14009b576b4ed1dbe035952f3106d8f4b6993125ed6fShih-wei Liao}; 14019b576b4ed1dbe035952f3106d8f4b6993125ed6fShih-wei Liao 1402ee1d79a603c77c0667b27c075a983579d5c51f7eSebastien Hertztemplate<bool kTransactionActive> 14030399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogersclass BuildInternalStackTraceVisitor : public StackVisitor { 14049b576b4ed1dbe035952f3106d8f4b6993125ed6fShih-wei Liao public: 14057a22fa657b972e8323692368975bc5a7be1cc0f5Ian Rogers explicit BuildInternalStackTraceVisitor(Thread* self, Thread* thread, int skip_depth) 14060aded089f565008ba5908e395e5914ca4f91f2deDave Allison : StackVisitor(thread, nullptr), self_(self), 14070aded089f565008ba5908e395e5914ca4f91f2deDave Allison skip_depth_(skip_depth), count_(0), dex_pc_trace_(nullptr), method_trace_(nullptr) {} 1408283ed0d9db3084d0fee46d47cd73bf84bd0cfc16Ian Rogers 14091f5393447b9f45be7918042d9ee7b521376de866Ian Rogers bool Init(int depth) 1410b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 1411aaa208006d7c8cc0f381c4aa9b525be24066c495Ian Rogers // Allocate method trace with an extra slot that will hold the PC trace 1412eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier StackHandleScope<1> hs(self_); 1413eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); 1414eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier Handle<mirror::ObjectArray<mirror::Object>> method_trace( 1415eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier hs.NewHandle(class_linker->AllocObjectArray<mirror::Object>(self_, depth + 1))); 1416eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier if (method_trace.Get() == nullptr) { 1417283ed0d9db3084d0fee46d47cd73bf84bd0cfc16Ian Rogers return false; 1418726079d3e2e50854cd6ca4c393f4529a796dba58Elliott Hughes } 14192dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers mirror::IntArray* dex_pc_trace = mirror::IntArray::Alloc(self_, depth); 14200aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (dex_pc_trace == nullptr) { 1421283ed0d9db3084d0fee46d47cd73bf84bd0cfc16Ian Rogers return false; 1422726079d3e2e50854cd6ca4c393f4529a796dba58Elliott Hughes } 1423aaa208006d7c8cc0f381c4aa9b525be24066c495Ian Rogers // Save PC trace in last element of method trace, also places it into the 1424aaa208006d7c8cc0f381c4aa9b525be24066c495Ian Rogers // object graph. 1425d2fe10a3a34af171bf1631219cd2d6ff6b7778b5Sebastien Hertz // We are called from native: use non-transactional mode. 1426ee1d79a603c77c0667b27c075a983579d5c51f7eSebastien Hertz method_trace->Set<kTransactionActive>(depth, dex_pc_trace); 14270399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // Set the Object*s and assert that no thread suspension is now possible. 142852673ffae0025d86f4023735581f19ebcc477487Ian Rogers const char* last_no_suspend_cause = 14291f5393447b9f45be7918042d9ee7b521376de866Ian Rogers self_->StartAssertNoThreadSuspension("Building internal stack trace"); 14300aded089f565008ba5908e395e5914ca4f91f2deDave Allison CHECK(last_no_suspend_cause == nullptr) << last_no_suspend_cause; 1431eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier method_trace_ = method_trace.Get(); 14320399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers dex_pc_trace_ = dex_pc_trace; 1433283ed0d9db3084d0fee46d47cd73bf84bd0cfc16Ian Rogers return true; 14349b576b4ed1dbe035952f3106d8f4b6993125ed6fShih-wei Liao } 14359b576b4ed1dbe035952f3106d8f4b6993125ed6fShih-wei Liao 14360399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers virtual ~BuildInternalStackTraceVisitor() { 14370aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (method_trace_ != nullptr) { 14380aded089f565008ba5908e395e5914ca4f91f2deDave Allison self_->EndAssertNoThreadSuspension(nullptr); 143952673ffae0025d86f4023735581f19ebcc477487Ian Rogers } 14400399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers } 14419b576b4ed1dbe035952f3106d8f4b6993125ed6fShih-wei Liao 1442b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers bool VisitFrame() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 14430aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (method_trace_ == nullptr || dex_pc_trace_ == nullptr) { 14447934ac288acfb2552bb0b06ec1f61e5820d924a4Brian Carlstrom return true; // We're probably trying to fillInStackTrace for an OutOfMemoryError. 1445726079d3e2e50854cd6ca4c393f4529a796dba58Elliott Hughes } 144629f2742a478e4f5bd2ec7473410c5e5e7134a6f2Elliott Hughes if (skip_depth_ > 0) { 144729f2742a478e4f5bd2ec7473410c5e5e7134a6f2Elliott Hughes skip_depth_--; 1448530fa005e2944d3b12712f80d974f0e753f568efElliott Hughes return true; 144929f2742a478e4f5bd2ec7473410c5e5e7134a6f2Elliott Hughes } 1450ea46f950e7a51585db293cd7f047de190a482414Brian Carlstrom mirror::ArtMethod* m = GetMethod(); 14510399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers if (m->IsRuntimeMethod()) { 14520399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers return true; // Ignore runtime frames (in particular callee save). 14536b0870dfaaa2e69a900ad7ed88e4e1d3697445aaIan Rogers } 1454ee1d79a603c77c0667b27c075a983579d5c51f7eSebastien Hertz method_trace_->Set<kTransactionActive>(count_, m); 1455b0fa5dc7769c1e054032f39de0a3f6d6dd06f8cfIan Rogers dex_pc_trace_->Set<kTransactionActive>(count_, 1456b0fa5dc7769c1e054032f39de0a3f6d6dd06f8cfIan Rogers m->IsProxyMethod() ? DexFile::kDexNoIndex : GetDexPc()); 1457aaa208006d7c8cc0f381c4aa9b525be24066c495Ian Rogers ++count_; 1458530fa005e2944d3b12712f80d974f0e753f568efElliott Hughes return true; 14599b576b4ed1dbe035952f3106d8f4b6993125ed6fShih-wei Liao } 14609b576b4ed1dbe035952f3106d8f4b6993125ed6fShih-wei Liao 14612dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers mirror::ObjectArray<mirror::Object>* GetInternalStackTrace() const { 14620399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers return method_trace_; 14639b576b4ed1dbe035952f3106d8f4b6993125ed6fShih-wei Liao } 14649b576b4ed1dbe035952f3106d8f4b6993125ed6fShih-wei Liao 14659b576b4ed1dbe035952f3106d8f4b6993125ed6fShih-wei Liao private: 14661f5393447b9f45be7918042d9ee7b521376de866Ian Rogers Thread* const self_; 146729f2742a478e4f5bd2ec7473410c5e5e7134a6f2Elliott Hughes // How many more frames to skip. 146829f2742a478e4f5bd2ec7473410c5e5e7134a6f2Elliott Hughes int32_t skip_depth_; 14690399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // Current position down stack trace. 1470aaa208006d7c8cc0f381c4aa9b525be24066c495Ian Rogers uint32_t count_; 14710399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // Array of dex PC values. 14722dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers mirror::IntArray* dex_pc_trace_; 14730399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers // An array of the methods on the stack, the last entry is a reference to the PC trace. 14742dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers mirror::ObjectArray<mirror::Object>* method_trace_; 14759b576b4ed1dbe035952f3106d8f4b6993125ed6fShih-wei Liao}; 14769b576b4ed1dbe035952f3106d8f4b6993125ed6fShih-wei Liao 1477ee1d79a603c77c0667b27c075a983579d5c51f7eSebastien Hertztemplate<bool kTransactionActive> 14782b7c4d196c8abe32f4ca633534917da9de53c359Mathieu Chartierjobject Thread::CreateInternalStackTrace(const ScopedObjectAccessAlreadyRunnable& soa) const { 1479aaa208006d7c8cc0f381c4aa9b525be24066c495Ian Rogers // Compute depth of stack 14807a22fa657b972e8323692368975bc5a7be1cc0f5Ian Rogers CountStackDepthVisitor count_visitor(const_cast<Thread*>(this)); 14810399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers count_visitor.WalkStack(); 14829b576b4ed1dbe035952f3106d8f4b6993125ed6fShih-wei Liao int32_t depth = count_visitor.GetDepth(); 148329f2742a478e4f5bd2ec7473410c5e5e7134a6f2Elliott Hughes int32_t skip_depth = count_visitor.GetSkipDepth(); 14844417536522fd2a9d8215d8672331984769c9520bShih-wei Liao 14851f5393447b9f45be7918042d9ee7b521376de866Ian Rogers // Build internal stack trace. 1486ee1d79a603c77c0667b27c075a983579d5c51f7eSebastien Hertz BuildInternalStackTraceVisitor<kTransactionActive> build_trace_visitor(soa.Self(), 1487ee1d79a603c77c0667b27c075a983579d5c51f7eSebastien Hertz const_cast<Thread*>(this), 1488ee1d79a603c77c0667b27c075a983579d5c51f7eSebastien Hertz skip_depth); 14891f5393447b9f45be7918042d9ee7b521376de866Ian Rogers if (!build_trace_visitor.Init(depth)) { 14900aded089f565008ba5908e395e5914ca4f91f2deDave Allison return nullptr; // Allocation failed. 1491283ed0d9db3084d0fee46d47cd73bf84bd0cfc16Ian Rogers } 14920399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers build_trace_visitor.WalkStack(); 14932dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers mirror::ObjectArray<mirror::Object>* trace = build_trace_visitor.GetInternalStackTrace(); 14947a22fa657b972e8323692368975bc5a7be1cc0f5Ian Rogers if (kIsDebugBuild) { 14957a22fa657b972e8323692368975bc5a7be1cc0f5Ian Rogers for (int32_t i = 0; i < trace->GetLength(); ++i) { 14960aded089f565008ba5908e395e5914ca4f91f2deDave Allison CHECK(trace->Get(i) != nullptr); 14977a22fa657b972e8323692368975bc5a7be1cc0f5Ian Rogers } 14987a22fa657b972e8323692368975bc5a7be1cc0f5Ian Rogers } 14997a22fa657b972e8323692368975bc5a7be1cc0f5Ian Rogers return soa.AddLocalReference<jobjectArray>(trace); 1500aaa208006d7c8cc0f381c4aa9b525be24066c495Ian Rogers} 15012b7c4d196c8abe32f4ca633534917da9de53c359Mathieu Chartiertemplate jobject Thread::CreateInternalStackTrace<false>( 15022b7c4d196c8abe32f4ca633534917da9de53c359Mathieu Chartier const ScopedObjectAccessAlreadyRunnable& soa) const; 15032b7c4d196c8abe32f4ca633534917da9de53c359Mathieu Chartiertemplate jobject Thread::CreateInternalStackTrace<true>( 15042b7c4d196c8abe32f4ca633534917da9de53c359Mathieu Chartier const ScopedObjectAccessAlreadyRunnable& soa) const; 15052b7c4d196c8abe32f4ca633534917da9de53c359Mathieu Chartier 15062b7c4d196c8abe32f4ca633534917da9de53c359Mathieu ChartierjobjectArray Thread::InternalStackTraceToStackTraceElementArray( 15072b7c4d196c8abe32f4ca633534917da9de53c359Mathieu Chartier const ScopedObjectAccessAlreadyRunnable& soa, jobject internal, jobjectArray output_array, 15082b7c4d196c8abe32f4ca633534917da9de53c359Mathieu Chartier int* stack_depth) { 1509aaa208006d7c8cc0f381c4aa9b525be24066c495Ian Rogers // Decode the internal stack trace into the depth, method trace and PC trace 1510530825ba92e317822116efffd470577ddfd142d4Mathieu Chartier int32_t depth = soa.Decode<mirror::ObjectArray<mirror::Object>*>(internal)->GetLength() - 1; 1511aaa208006d7c8cc0f381c4aa9b525be24066c495Ian Rogers 1512aaa208006d7c8cc0f381c4aa9b525be24066c495Ian Rogers ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); 1513aaa208006d7c8cc0f381c4aa9b525be24066c495Ian Rogers 151401158d7a57c8321370667a6045220237d16e0da8Elliott Hughes jobjectArray result; 1515530825ba92e317822116efffd470577ddfd142d4Mathieu Chartier 15160aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (output_array != nullptr) { 151701158d7a57c8321370667a6045220237d16e0da8Elliott Hughes // Reuse the array we were given. 151801158d7a57c8321370667a6045220237d16e0da8Elliott Hughes result = output_array; 151901158d7a57c8321370667a6045220237d16e0da8Elliott Hughes // ...adjusting the number of frames we'll write to not exceed the array length. 1520530825ba92e317822116efffd470577ddfd142d4Mathieu Chartier const int32_t traces_length = 1521530825ba92e317822116efffd470577ddfd142d4Mathieu Chartier soa.Decode<mirror::ObjectArray<mirror::StackTraceElement>*>(result)->GetLength(); 1522530825ba92e317822116efffd470577ddfd142d4Mathieu Chartier depth = std::min(depth, traces_length); 152301158d7a57c8321370667a6045220237d16e0da8Elliott Hughes } else { 152401158d7a57c8321370667a6045220237d16e0da8Elliott Hughes // Create java_trace array and place in local reference table 1525530825ba92e317822116efffd470577ddfd142d4Mathieu Chartier mirror::ObjectArray<mirror::StackTraceElement>* java_traces = 1526530825ba92e317822116efffd470577ddfd142d4Mathieu Chartier class_linker->AllocStackTraceElementArray(soa.Self(), depth); 15270aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (java_traces == nullptr) { 15280aded089f565008ba5908e395e5914ca4f91f2deDave Allison return nullptr; 152930646836b4a1c6e5e80ddaea246cf9669eaa0628Elliott Hughes } 153000f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers result = soa.AddLocalReference<jobjectArray>(java_traces); 153101158d7a57c8321370667a6045220237d16e0da8Elliott Hughes } 153201158d7a57c8321370667a6045220237d16e0da8Elliott Hughes 15330aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (stack_depth != nullptr) { 153401158d7a57c8321370667a6045220237d16e0da8Elliott Hughes *stack_depth = depth; 153501158d7a57c8321370667a6045220237d16e0da8Elliott Hughes } 153655df06be4369f5d8ab5eb61a5d22809255171036Shih-wei Liao 15379b576b4ed1dbe035952f3106d8f4b6993125ed6fShih-wei Liao for (int32_t i = 0; i < depth; ++i) { 1538530825ba92e317822116efffd470577ddfd142d4Mathieu Chartier mirror::ObjectArray<mirror::Object>* method_trace = 1539530825ba92e317822116efffd470577ddfd142d4Mathieu Chartier soa.Decode<mirror::ObjectArray<mirror::Object>*>(internal); 1540aaa208006d7c8cc0f381c4aa9b525be24066c495Ian Rogers // Prepare parameters for StackTraceElement(String cls, String method, String file, int line) 1541ea46f950e7a51585db293cd7f047de190a482414Brian Carlstrom mirror::ArtMethod* method = down_cast<mirror::ArtMethod*>(method_trace->Get(i)); 1542228d6b8a4f0a21c1e9b2372c3104ce4ee19f65b4Jeff Hao int32_t line_number; 1543eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier StackHandleScope<3> hs(soa.Self()); 1544eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier auto class_name_object(hs.NewHandle<mirror::String>(nullptr)); 1545eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier auto source_name_object(hs.NewHandle<mirror::String>(nullptr)); 1546228d6b8a4f0a21c1e9b2372c3104ce4ee19f65b4Jeff Hao if (method->IsProxyMethod()) { 1547228d6b8a4f0a21c1e9b2372c3104ce4ee19f65b4Jeff Hao line_number = -1; 1548eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier class_name_object.Assign(method->GetDeclaringClass()->GetName()); 1549228d6b8a4f0a21c1e9b2372c3104ce4ee19f65b4Jeff Hao // source_name_object intentionally left null for proxy methods 1550228d6b8a4f0a21c1e9b2372c3104ce4ee19f65b4Jeff Hao } else { 1551228d6b8a4f0a21c1e9b2372c3104ce4ee19f65b4Jeff Hao mirror::IntArray* pc_trace = down_cast<mirror::IntArray*>(method_trace->Get(depth)); 1552228d6b8a4f0a21c1e9b2372c3104ce4ee19f65b4Jeff Hao uint32_t dex_pc = pc_trace->Get(i); 1553bfd9a4378eacaf2dc2bbe05ad48c5164fc93c9feMathieu Chartier line_number = method->GetLineNumFromDexPC(dex_pc); 1554228d6b8a4f0a21c1e9b2372c3104ce4ee19f65b4Jeff Hao // Allocate element, potentially triggering GC 1555228d6b8a4f0a21c1e9b2372c3104ce4ee19f65b4Jeff Hao // TODO: reuse class_name_object via Class::name_? 1556bfd9a4378eacaf2dc2bbe05ad48c5164fc93c9feMathieu Chartier const char* descriptor = method->GetDeclaringClassDescriptor(); 15577c6aca27dd2df58ac3d83a93ec5848e2b7d3159aBrian Carlstrom CHECK(descriptor != nullptr); 1558228d6b8a4f0a21c1e9b2372c3104ce4ee19f65b4Jeff Hao std::string class_name(PrettyDescriptor(descriptor)); 1559eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier class_name_object.Assign(mirror::String::AllocFromModifiedUtf8(soa.Self(), class_name.c_str())); 1560eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier if (class_name_object.Get() == nullptr) { 15617c6aca27dd2df58ac3d83a93ec5848e2b7d3159aBrian Carlstrom return nullptr; 1562228d6b8a4f0a21c1e9b2372c3104ce4ee19f65b4Jeff Hao } 1563bfd9a4378eacaf2dc2bbe05ad48c5164fc93c9feMathieu Chartier const char* source_file = method->GetDeclaringClassSourceFile(); 15647c6aca27dd2df58ac3d83a93ec5848e2b7d3159aBrian Carlstrom if (source_file != nullptr) { 1565eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier source_name_object.Assign(mirror::String::AllocFromModifiedUtf8(soa.Self(), source_file)); 1566eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier if (source_name_object.Get() == nullptr) { 15677c6aca27dd2df58ac3d83a93ec5848e2b7d3159aBrian Carlstrom return nullptr; 15687c6aca27dd2df58ac3d83a93ec5848e2b7d3159aBrian Carlstrom } 1569228d6b8a4f0a21c1e9b2372c3104ce4ee19f65b4Jeff Hao } 157040381fb9dc4b4cf274f1e58b2cdf4396202c6189Brian Carlstrom } 1571bfd9a4378eacaf2dc2bbe05ad48c5164fc93c9feMathieu Chartier const char* method_name = method->GetName(); 15720aded089f565008ba5908e395e5914ca4f91f2deDave Allison CHECK(method_name != nullptr); 1573eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier Handle<mirror::String> method_name_object( 1574eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier hs.NewHandle(mirror::String::AllocFromModifiedUtf8(soa.Self(), method_name))); 1575eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier if (method_name_object.Get() == nullptr) { 15760aded089f565008ba5908e395e5914ca4f91f2deDave Allison return nullptr; 15776d4d9fcb4f01e287ee29e81cd1c941ee5d11d379Ian Rogers } 1578590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier mirror::StackTraceElement* obj = mirror::StackTraceElement::Alloc( 1579590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier soa.Self(), class_name_object, method_name_object, source_name_object, line_number); 15800aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (obj == nullptr) { 15810aded089f565008ba5908e395e5914ca4f91f2deDave Allison return nullptr; 158230646836b4a1c6e5e80ddaea246cf9669eaa0628Elliott Hughes } 1583d2fe10a3a34af171bf1631219cd2d6ff6b7778b5Sebastien Hertz // We are called from native: use non-transactional mode. 1584d2fe10a3a34af171bf1631219cd2d6ff6b7778b5Sebastien Hertz soa.Decode<mirror::ObjectArray<mirror::StackTraceElement>*>(result)->Set<false>(i, obj); 158555df06be4369f5d8ab5eb61a5d22809255171036Shih-wei Liao } 1586aaa208006d7c8cc0f381c4aa9b525be24066c495Ian Rogers return result; 158755df06be4369f5d8ab5eb61a5d22809255171036Shih-wei Liao} 158855df06be4369f5d8ab5eb61a5d22809255171036Shih-wei Liao 158962d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogersvoid Thread::ThrowNewExceptionF(const ThrowLocation& throw_location, 159062d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers const char* exception_class_descriptor, const char* fmt, ...) { 1591a5b897eae4b6f9f9608faa9eada7ddf42bf1bfd2Elliott Hughes va_list args; 1592a5b897eae4b6f9f9608faa9eada7ddf42bf1bfd2Elliott Hughes va_start(args, fmt); 159362d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers ThrowNewExceptionV(throw_location, exception_class_descriptor, 159462d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers fmt, args); 1595a5b897eae4b6f9f9608faa9eada7ddf42bf1bfd2Elliott Hughes va_end(args); 15964a2b41793d18d402286ae37e9de4fd392bc75a08Elliott Hughes} 15974a2b41793d18d402286ae37e9de4fd392bc75a08Elliott Hughes 159862d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogersvoid Thread::ThrowNewExceptionV(const ThrowLocation& throw_location, 159962d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers const char* exception_class_descriptor, 160062d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers const char* fmt, va_list ap) { 16014a2b41793d18d402286ae37e9de4fd392bc75a08Elliott Hughes std::string msg; 16024a2b41793d18d402286ae37e9de4fd392bc75a08Elliott Hughes StringAppendV(&msg, fmt, ap); 160362d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers ThrowNewException(throw_location, exception_class_descriptor, msg.c_str()); 16045cb5ad27944efb08d4556b3c0d362302e37e832bElliott Hughes} 160537f7a40f6789bb287f287a9af00777af9d6428eeElliott Hughes 160662d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogersvoid Thread::ThrowNewException(const ThrowLocation& throw_location, const char* exception_class_descriptor, 160762d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers const char* msg) { 16088d7672e476a526aa6205a008b5a06c8216342ac6Mathieu Chartier // Callers should either clear or call ThrowNewWrappedException. 16098d7672e476a526aa6205a008b5a06c8216342ac6Mathieu Chartier AssertNoPendingExceptionForNewException(msg); 161062d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers ThrowNewWrappedException(throw_location, exception_class_descriptor, msg); 161162d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers} 161262d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers 161362d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogersvoid Thread::ThrowNewWrappedException(const ThrowLocation& throw_location, 161462d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers const char* exception_class_descriptor, 161562d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers const char* msg) { 161662d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers DCHECK_EQ(this, Thread::Current()); 161753b8b09fc80329539585dcf43657bc5f4ecefdffIan Rogers ScopedObjectAccessUnchecked soa(this); 1618eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier StackHandleScope<5> hs(soa.Self()); 161962d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers // Ensure we don't forget arguments over object allocation. 1620eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier Handle<mirror::Object> saved_throw_this(hs.NewHandle(throw_location.GetThis())); 1621eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier Handle<mirror::ArtMethod> saved_throw_method(hs.NewHandle(throw_location.GetMethod())); 162262d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers // Ignore the cause throw location. TODO: should we report this as a re-throw? 162353b8b09fc80329539585dcf43657bc5f4ecefdffIan Rogers ScopedLocalRef<jobject> cause(GetJniEnv(), soa.AddLocalReference<jobject>(GetException(nullptr))); 16249f1020305292a21fd14a402b189c765a125226abSebastien Hertz bool is_exception_reported = IsExceptionReportedToInstrumentation(); 162562d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers ClearException(); 162662d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers Runtime* runtime = Runtime::Current(); 1627a4f94740f9d66b21f4bcd3a225c434aa29cfa323Elliott Hughes 1628c528dba35b5faece51ca658fc008b688f8b690adMathieu Chartier mirror::ClassLoader* cl = nullptr; 1629eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier if (saved_throw_method.Get() != nullptr) { 1630eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier cl = saved_throw_method.Get()->GetDeclaringClass()->GetClassLoader(); 1631eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier } 1632eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier Handle<mirror::ClassLoader> class_loader(hs.NewHandle(cl)); 1633eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier Handle<mirror::Class> exception_class( 1634eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier hs.NewHandle(runtime->GetClassLinker()->FindClass(this, exception_class_descriptor, 1635eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier class_loader))); 1636eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier if (UNLIKELY(exception_class.Get() == nullptr)) { 163730646836b4a1c6e5e80ddaea246cf9669eaa0628Elliott Hughes CHECK(IsExceptionPending()); 163862d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers LOG(ERROR) << "No exception class " << PrettyDescriptor(exception_class_descriptor); 163930646836b4a1c6e5e80ddaea246cf9669eaa0628Elliott Hughes return; 164030646836b4a1c6e5e80ddaea246cf9669eaa0628Elliott Hughes } 164162d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers 1642c528dba35b5faece51ca658fc008b688f8b690adMathieu Chartier if (UNLIKELY(!runtime->GetClassLinker()->EnsureInitialized(exception_class, true, true))) { 164362d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers DCHECK(IsExceptionPending()); 164462d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers return; 164562d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers } 164662d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers DCHECK(!runtime->IsStarted() || exception_class->IsThrowableClass()); 1647eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier Handle<mirror::Throwable> exception( 1648eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier hs.NewHandle(down_cast<mirror::Throwable*>(exception_class->AllocObject(this)))); 164962d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers 1650590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier // If we couldn't allocate the exception, throw the pre-allocated out of memory exception. 1651eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier if (exception.Get() == nullptr) { 1652eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier ThrowLocation gc_safe_throw_location(saved_throw_this.Get(), saved_throw_method.Get(), 1653c528dba35b5faece51ca658fc008b688f8b690adMathieu Chartier throw_location.GetDexPc()); 1654c528dba35b5faece51ca658fc008b688f8b690adMathieu Chartier SetException(gc_safe_throw_location, Runtime::Current()->GetPreAllocatedOutOfMemoryError()); 16559f1020305292a21fd14a402b189c765a125226abSebastien Hertz SetExceptionReportedToInstrumentation(is_exception_reported); 1656590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier return; 1657590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier } 1658590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier 165962d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers // Choose an appropriate constructor and set up the arguments. 166062d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers const char* signature; 166153b8b09fc80329539585dcf43657bc5f4ecefdffIan Rogers ScopedLocalRef<jstring> msg_string(GetJniEnv(), nullptr); 16620aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (msg != nullptr) { 166362d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers // Ensure we remember this and the method over the String allocation. 166453b8b09fc80329539585dcf43657bc5f4ecefdffIan Rogers msg_string.reset( 166553b8b09fc80329539585dcf43657bc5f4ecefdffIan Rogers soa.AddLocalReference<jstring>(mirror::String::AllocFromModifiedUtf8(this, msg))); 16660aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (UNLIKELY(msg_string.get() == nullptr)) { 166762d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers CHECK(IsExceptionPending()); // OOME. 166862d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers return; 166962d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers } 16700aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (cause.get() == nullptr) { 167162d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers signature = "(Ljava/lang/String;)V"; 1672ebd1fd233c8e14f50844f15109ccd50b27079722Brian Carlstrom } else { 167362d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers signature = "(Ljava/lang/String;Ljava/lang/Throwable;)V"; 167462d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers } 167562d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers } else { 16760aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (cause.get() == nullptr) { 167762d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers signature = "()V"; 167862d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers } else { 167962d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers signature = "(Ljava/lang/Throwable;)V"; 1680ebd1fd233c8e14f50844f15109ccd50b27079722Brian Carlstrom } 1681ebd1fd233c8e14f50844f15109ccd50b27079722Brian Carlstrom } 1682ea46f950e7a51585db293cd7f047de190a482414Brian Carlstrom mirror::ArtMethod* exception_init_method = 168362d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers exception_class->FindDeclaredDirectMethod("<init>", signature); 168462d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers 16850aded089f565008ba5908e395e5914ca4f91f2deDave Allison CHECK(exception_init_method != nullptr) << "No <init>" << signature << " in " 168662d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers << PrettyDescriptor(exception_class_descriptor); 168762d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers 168862d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers if (UNLIKELY(!runtime->IsStarted())) { 168962d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers // Something is trying to throw an exception without a started runtime, which is the common 169062d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers // case in the compiler. We won't be able to invoke the constructor of the exception, so set 169162d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers // the exception fields directly. 16920aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (msg != nullptr) { 169353b8b09fc80329539585dcf43657bc5f4ecefdffIan Rogers exception->SetDetailMessage(down_cast<mirror::String*>(DecodeJObject(msg_string.get()))); 169462d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers } 16950aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (cause.get() != nullptr) { 169653b8b09fc80329539585dcf43657bc5f4ecefdffIan Rogers exception->SetCause(down_cast<mirror::Throwable*>(DecodeJObject(cause.get()))); 169762d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers } 1698c45b8b582be5c98941ca3869fcdc9a08d520da41Ian Rogers ScopedLocalRef<jobject> trace(GetJniEnv(), 1699c45b8b582be5c98941ca3869fcdc9a08d520da41Ian Rogers Runtime::Current()->IsActiveTransaction() 1700c45b8b582be5c98941ca3869fcdc9a08d520da41Ian Rogers ? CreateInternalStackTrace<true>(soa) 1701c45b8b582be5c98941ca3869fcdc9a08d520da41Ian Rogers : CreateInternalStackTrace<false>(soa)); 1702c45b8b582be5c98941ca3869fcdc9a08d520da41Ian Rogers if (trace.get() != nullptr) { 1703c45b8b582be5c98941ca3869fcdc9a08d520da41Ian Rogers exception->SetStackState(down_cast<mirror::Throwable*>(DecodeJObject(trace.get()))); 1704c45b8b582be5c98941ca3869fcdc9a08d520da41Ian Rogers } 1705eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier ThrowLocation gc_safe_throw_location(saved_throw_this.Get(), saved_throw_method.Get(), 170662d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers throw_location.GetDexPc()); 1707eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier SetException(gc_safe_throw_location, exception.Get()); 17089f1020305292a21fd14a402b189c765a125226abSebastien Hertz SetExceptionReportedToInstrumentation(is_exception_reported); 170962d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers } else { 171053b8b09fc80329539585dcf43657bc5f4ecefdffIan Rogers jvalue jv_args[2]; 171153b8b09fc80329539585dcf43657bc5f4ecefdffIan Rogers size_t i = 0; 171253b8b09fc80329539585dcf43657bc5f4ecefdffIan Rogers 17130aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (msg != nullptr) { 171453b8b09fc80329539585dcf43657bc5f4ecefdffIan Rogers jv_args[i].l = msg_string.get(); 171553b8b09fc80329539585dcf43657bc5f4ecefdffIan Rogers ++i; 171662d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers } 17170aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (cause.get() != nullptr) { 171853b8b09fc80329539585dcf43657bc5f4ecefdffIan Rogers jv_args[i].l = cause.get(); 171953b8b09fc80329539585dcf43657bc5f4ecefdffIan Rogers ++i; 172062d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers } 1721eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier InvokeWithJValues(soa, exception.Get(), soa.EncodeMethod(exception_init_method), jv_args); 172262d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers if (LIKELY(!IsExceptionPending())) { 1723eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier ThrowLocation gc_safe_throw_location(saved_throw_this.Get(), saved_throw_method.Get(), 172462d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers throw_location.GetDexPc()); 1725eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier SetException(gc_safe_throw_location, exception.Get()); 17269f1020305292a21fd14a402b189c765a125226abSebastien Hertz SetExceptionReportedToInstrumentation(is_exception_reported); 172762d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers } 172830646836b4a1c6e5e80ddaea246cf9669eaa0628Elliott Hughes } 1729a5b897eae4b6f9f9608faa9eada7ddf42bf1bfd2Elliott Hughes} 1730a5b897eae4b6f9f9608faa9eada7ddf42bf1bfd2Elliott Hughes 17312ced6a534157d5d963693346904389c19775d2daElliott Hughesvoid Thread::ThrowOutOfMemoryError(const char* msg) { 17322ced6a534157d5d963693346904389c19775d2daElliott Hughes LOG(ERROR) << StringPrintf("Throwing OutOfMemoryError \"%s\"%s", 1733dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers msg, (tls32_.throwing_OutOfMemoryError ? " (recursive case)" : "")); 173462d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers ThrowLocation throw_location = GetCurrentLocationForThrow(); 1735dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers if (!tls32_.throwing_OutOfMemoryError) { 1736dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tls32_.throwing_OutOfMemoryError = true; 173762d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers ThrowNewException(throw_location, "Ljava/lang/OutOfMemoryError;", msg); 1738dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tls32_.throwing_OutOfMemoryError = false; 1739418dfe7849f45535b5388a91bd7a16cfc20a612bElliott Hughes } else { 17407934ac288acfb2552bb0b06ec1f61e5820d924a4Brian Carlstrom Dump(LOG(ERROR)); // The pre-allocated OOME has no stack, so help out and log one. 174162d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers SetException(throw_location, Runtime::Current()->GetPreAllocatedOutOfMemoryError()); 1742418dfe7849f45535b5388a91bd7a16cfc20a612bElliott Hughes } 174379082e367845bbd68ec44ef2ddd1be8ef0e1550fElliott Hughes} 174479082e367845bbd68ec44ef2ddd1be8ef0e1550fElliott Hughes 1745498508c1187dc07d3eae5476784cde20f5224d93Elliott HughesThread* Thread::CurrentFromGdb() { 1746accd83d1523545ac69bafd38e72a7d5cff8e2facElliott Hughes return Thread::Current(); 1747accd83d1523545ac69bafd38e72a7d5cff8e2facElliott Hughes} 1748accd83d1523545ac69bafd38e72a7d5cff8e2facElliott Hughes 1749accd83d1523545ac69bafd38e72a7d5cff8e2facElliott Hughesvoid Thread::DumpFromGdb() const { 17506b4ef025af12b158d117fc80fc79acf620f411a0Brian Carlstrom std::ostringstream ss; 17516b4ef025af12b158d117fc80fc79acf620f411a0Brian Carlstrom Dump(ss); 1752955724179c6c739524f610023287f56b24dc31deElliott Hughes std::string str(ss.str()); 17536b4ef025af12b158d117fc80fc79acf620f411a0Brian Carlstrom // log to stderr for debugging command line processes 17546b4ef025af12b158d117fc80fc79acf620f411a0Brian Carlstrom std::cerr << str; 17556b4ef025af12b158d117fc80fc79acf620f411a0Brian Carlstrom#ifdef HAVE_ANDROID_OS 17566b4ef025af12b158d117fc80fc79acf620f411a0Brian Carlstrom // log to logcat for debugging frameworks processes 17576b4ef025af12b158d117fc80fc79acf620f411a0Brian Carlstrom LOG(INFO) << str; 17586b4ef025af12b158d117fc80fc79acf620f411a0Brian Carlstrom#endif 1759accd83d1523545ac69bafd38e72a7d5cff8e2facElliott Hughes} 1760accd83d1523545ac69bafd38e72a7d5cff8e2facElliott Hughes 1761dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers// Explicitly instantiate 32 and 64bit thread offset dumping support. 1762dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogerstemplate void Thread::DumpThreadOffset<4>(std::ostream& os, uint32_t offset); 1763dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogerstemplate void Thread::DumpThreadOffset<8>(std::ostream& os, uint32_t offset); 176498e2017cac7ca554602480fcefabbbe630a4a39bElliott Hughes 1765dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogerstemplate<size_t ptr_size> 1766dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogersvoid Thread::DumpThreadOffset(std::ostream& os, uint32_t offset) { 1767dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers#define DO_THREAD_OFFSET(x, y) \ 1768dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers if (offset == x.Uint32Value()) { \ 1769dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers os << y; \ 1770f69863b3039fc621ff4250e262d2a024d5e79ec8Brian Carlstrom return; \ 1771f69863b3039fc621ff4250e262d2a024d5e79ec8Brian Carlstrom } 1772dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers DO_THREAD_OFFSET(ThreadFlagsOffset<ptr_size>(), "state_and_flags") 1773dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers DO_THREAD_OFFSET(CardTableOffset<ptr_size>(), "card_table") 1774dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers DO_THREAD_OFFSET(ExceptionOffset<ptr_size>(), "exception") 1775dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers DO_THREAD_OFFSET(PeerOffset<ptr_size>(), "peer"); 1776dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers DO_THREAD_OFFSET(JniEnvOffset<ptr_size>(), "jni_env") 1777dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers DO_THREAD_OFFSET(SelfOffset<ptr_size>(), "self") 1778dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers DO_THREAD_OFFSET(StackEndOffset<ptr_size>(), "stack_end") 1779dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers DO_THREAD_OFFSET(ThinLockIdOffset<ptr_size>(), "thin_lock_thread_id") 1780dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers DO_THREAD_OFFSET(TopOfManagedStackOffset<ptr_size>(), "top_quick_frame_method") 1781dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers DO_THREAD_OFFSET(TopOfManagedStackPcOffset<ptr_size>(), "top_quick_frame_pc") 1782dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers DO_THREAD_OFFSET(TopShadowFrameOffset<ptr_size>(), "top_shadow_frame") 1783eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier DO_THREAD_OFFSET(TopHandleScopeOffset<ptr_size>(), "top_handle_scope") 1784dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers DO_THREAD_OFFSET(ThreadSuspendTriggerOffset<ptr_size>(), "suspend_trigger") 178528fa76d17d741238da86dbdb47f721ae97c9eac8Elliott Hughes#undef DO_THREAD_OFFSET 178698e2017cac7ca554602480fcefabbbe630a4a39bElliott Hughes 1787dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers#define INTERPRETER_ENTRY_POINT_INFO(x) \ 1788dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers if (INTERPRETER_ENTRYPOINT_OFFSET(ptr_size, x).Uint32Value() == offset) { \ 1789dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers os << #x; \ 1790dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers return; \ 179198e2017cac7ca554602480fcefabbbe630a4a39bElliott Hughes } 1792dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers INTERPRETER_ENTRY_POINT_INFO(pInterpreterToInterpreterBridge) 1793dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers INTERPRETER_ENTRY_POINT_INFO(pInterpreterToCompiledCodeBridge) 1794dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers#undef INTERPRETER_ENTRY_POINT_INFO 1795dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers 1796dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers#define JNI_ENTRY_POINT_INFO(x) \ 1797dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers if (JNI_ENTRYPOINT_OFFSET(ptr_size, x).Uint32Value() == offset) { \ 1798dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers os << #x; \ 1799dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers return; \ 1800dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers } 1801dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers JNI_ENTRY_POINT_INFO(pDlsymLookup) 1802dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers#undef JNI_ENTRY_POINT_INFO 1803dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers 1804dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers#define PORTABLE_ENTRY_POINT_INFO(x) \ 1805dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers if (PORTABLE_ENTRYPOINT_OFFSET(ptr_size, x).Uint32Value() == offset) { \ 1806dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers os << #x; \ 1807dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers return; \ 1808dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers } 1809dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers PORTABLE_ENTRY_POINT_INFO(pPortableImtConflictTrampoline) 1810dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers PORTABLE_ENTRY_POINT_INFO(pPortableResolutionTrampoline) 1811dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers PORTABLE_ENTRY_POINT_INFO(pPortableToInterpreterBridge) 1812dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers#undef PORTABLE_ENTRY_POINT_INFO 1813dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers 1814dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers#define QUICK_ENTRY_POINT_INFO(x) \ 1815dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers if (QUICK_ENTRYPOINT_OFFSET(ptr_size, x).Uint32Value() == offset) { \ 1816dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers os << #x; \ 1817dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers return; \ 1818dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers } 1819dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pAllocArray) 1820dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pAllocArrayResolved) 1821dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pAllocArrayWithAccessCheck) 1822dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pAllocObject) 1823dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pAllocObjectResolved) 1824dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pAllocObjectInitialized) 1825dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pAllocObjectWithAccessCheck) 1826dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pCheckAndAllocArray) 1827dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pCheckAndAllocArrayWithAccessCheck) 1828dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pInstanceofNonTrivial) 1829dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pCheckCast) 1830dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pInitializeStaticStorage) 1831dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pInitializeTypeAndVerifyAccess) 1832dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pInitializeType) 1833dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pResolveString) 1834dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pSet32Instance) 1835dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pSet32Static) 1836dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pSet64Instance) 1837dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pSet64Static) 1838dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pSetObjInstance) 1839dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pSetObjStatic) 1840dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pGet32Instance) 1841dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pGet32Static) 1842dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pGet64Instance) 1843dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pGet64Static) 1844dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pGetObjInstance) 1845dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pGetObjStatic) 1846dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pAputObjectWithNullAndBoundCheck) 1847dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pAputObjectWithBoundCheck) 1848dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pAputObject) 1849dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pHandleFillArrayData) 1850dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pJniMethodStart) 1851dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pJniMethodStartSynchronized) 1852dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pJniMethodEnd) 1853dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pJniMethodEndSynchronized) 1854dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pJniMethodEndWithReference) 1855dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pJniMethodEndWithReferenceSynchronized) 1856dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pQuickGenericJniTrampoline) 1857dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pLockObject) 1858dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pUnlockObject) 1859dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pCmpgDouble) 1860dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pCmpgFloat) 1861dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pCmplDouble) 1862dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pCmplFloat) 1863dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pFmod) 1864dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pL2d) 1865dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pFmodf) 1866dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pL2f) 1867dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pD2iz) 1868dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pF2iz) 1869dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pIdivmod) 1870dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pD2l) 1871dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pF2l) 1872dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pLdiv) 1873dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pLmod) 1874dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pLmul) 1875dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pShlLong) 1876dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pShrLong) 1877dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pUshrLong) 1878dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pIndexOf) 1879dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pStringCompareTo) 1880dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pMemcpy) 1881dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pQuickImtConflictTrampoline) 1882dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pQuickResolutionTrampoline) 1883dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pQuickToInterpreterBridge) 1884dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pInvokeDirectTrampolineWithAccessCheck) 1885dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pInvokeInterfaceTrampolineWithAccessCheck) 1886dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pInvokeStaticTrampolineWithAccessCheck) 1887dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pInvokeSuperTrampolineWithAccessCheck) 1888dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pInvokeVirtualTrampolineWithAccessCheck) 1889dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pTestSuspend) 1890dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pDeliverException) 1891dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pThrowArrayBounds) 1892dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pThrowDivZero) 1893dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pThrowNoSuchMethod) 1894dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pThrowNullPointer) 1895dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers QUICK_ENTRY_POINT_INFO(pThrowStackOverflow) 1896d9cb8ae2ed78f957a773af61759432d7a7bf78afDouglas Leung QUICK_ENTRY_POINT_INFO(pA64Load) 1897d9cb8ae2ed78f957a773af61759432d7a7bf78afDouglas Leung QUICK_ENTRY_POINT_INFO(pA64Store) 1898dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers#undef QUICK_ENTRY_POINT_INFO 1899dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers 190098e2017cac7ca554602480fcefabbbe630a4a39bElliott Hughes os << offset; 190128fa76d17d741238da86dbdb47f721ae97c9eac8Elliott Hughes} 190228fa76d17d741238da86dbdb47f721ae97c9eac8Elliott Hughes 190394d6df471a406a03bb1afba8ca3ae9c0fbf366b5jeffhaovoid Thread::QuickDeliverException() { 190462d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers // Get exception from thread. 190562d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers ThrowLocation throw_location; 190662d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers mirror::Throwable* exception = GetException(&throw_location); 19070aded089f565008ba5908e395e5914ca4f91f2deDave Allison CHECK(exception != nullptr); 190828ad40dc3ec2f09b0ffd4f6d6787bf1b532ccd5dIan Rogers // Don't leave exception visible while we try to find the handler, which may cause class 1909d07986fad0d08cdf05505cf9230714a2cf0dd9aeElliott Hughes // resolution. 19109f1020305292a21fd14a402b189c765a125226abSebastien Hertz bool is_exception_reported = IsExceptionReportedToInstrumentation(); 191128ad40dc3ec2f09b0ffd4f6d6787bf1b532ccd5dIan Rogers ClearException(); 1912fd3077e4b9ebadd281777310d26e64443858f653Sebastien Hertz bool is_deoptimization = (exception == GetDeoptimizationException()); 1913fd3077e4b9ebadd281777310d26e64443858f653Sebastien Hertz QuickExceptionHandler exception_handler(this, is_deoptimization); 1914fd3077e4b9ebadd281777310d26e64443858f653Sebastien Hertz if (is_deoptimization) { 1915fd3077e4b9ebadd281777310d26e64443858f653Sebastien Hertz exception_handler.DeoptimizeStack(); 1916fd3077e4b9ebadd281777310d26e64443858f653Sebastien Hertz } else { 19179f1020305292a21fd14a402b189c765a125226abSebastien Hertz exception_handler.FindCatch(throw_location, exception, is_exception_reported); 1918fd3077e4b9ebadd281777310d26e64443858f653Sebastien Hertz } 1919fd3077e4b9ebadd281777310d26e64443858f653Sebastien Hertz exception_handler.UpdateInstrumentationStack(); 1920fd3077e4b9ebadd281777310d26e64443858f653Sebastien Hertz exception_handler.DoLongJump(); 19219a8a8889418e09bf2d4ae3f683fbb40a71c3c8f4Ian Rogers LOG(FATAL) << "UNREACHABLE"; 1922bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers} 1923bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers 1924bdb0391258abc54bf77c676e36847d28a783bfe5Ian RogersContext* Thread::GetLongJumpContext() { 1925dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers Context* result = tlsPtr_.long_jump_context; 19260aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (result == nullptr) { 1927bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers result = Context::Create(); 19280399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers } else { 1929dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.long_jump_context = nullptr; // Avoid context being shared. 19306702243ea2332b566d8e8b871cc9db0906d835adMathieu Chartier result->Reset(); 19311a18c8c1c0e4ea1ff06177e93c7ff703376dcee2Shih-wei Liao } 1932bdb0391258abc54bf77c676e36847d28a783bfe5Ian Rogers return result; 19331a18c8c1c0e4ea1ff06177e93c7ff703376dcee2Shih-wei Liao} 19341a18c8c1c0e4ea1ff06177e93c7ff703376dcee2Shih-wei Liao 19354a8c3fa4bd8d95fac5671ab778dd00b6dc3ec0e4Andreas Gampe// Note: this visitor may return with a method set, but dex_pc_ being DexFile:kDexNoIndex. This is 19364a8c3fa4bd8d95fac5671ab778dd00b6dc3ec0e4Andreas Gampe// so we don't abort in a special situation (thinlocked monitor) when dumping the Java stack. 1937e0dcd46314d07eeb332edea292f5110178e4e3d2Ian Rogersstruct CurrentMethodVisitor FINAL : public StackVisitor { 19386ec8ebd178ed39aa09e4c7fad194900114c4121aAndreas Gampe CurrentMethodVisitor(Thread* thread, Context* context, bool abort_on_error) 193962d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) 1940f9df5c1639a9418fcdf70476556a4c30b210701eAndreas Gampe : StackVisitor(thread, context), this_object_(nullptr), method_(nullptr), dex_pc_(0), 19416ec8ebd178ed39aa09e4c7fad194900114c4121aAndreas Gampe abort_on_error_(abort_on_error) {} 1942e0dcd46314d07eeb332edea292f5110178e4e3d2Ian Rogers bool VisitFrame() OVERRIDE SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 1943ea46f950e7a51585db293cd7f047de190a482414Brian Carlstrom mirror::ArtMethod* m = GetMethod(); 194462d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers if (m->IsRuntimeMethod()) { 194562d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers // Continue if this is a runtime method. 194662d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers return true; 194762d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers } 19480aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (context_ != nullptr) { 194962d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers this_object_ = GetThisObject(); 19500399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers } 195162d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers method_ = m; 19526ec8ebd178ed39aa09e4c7fad194900114c4121aAndreas Gampe dex_pc_ = GetDexPc(abort_on_error_); 195362d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers return false; 195462d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers } 195562d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers mirror::Object* this_object_; 1956ea46f950e7a51585db293cd7f047de190a482414Brian Carlstrom mirror::ArtMethod* method_; 195762d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers uint32_t dex_pc_; 19586ec8ebd178ed39aa09e4c7fad194900114c4121aAndreas Gampe const bool abort_on_error_; 195962d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers}; 19600399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers 19616ec8ebd178ed39aa09e4c7fad194900114c4121aAndreas Gampemirror::ArtMethod* Thread::GetCurrentMethod(uint32_t* dex_pc, bool abort_on_error) const { 19626ec8ebd178ed39aa09e4c7fad194900114c4121aAndreas Gampe CurrentMethodVisitor visitor(const_cast<Thread*>(this), nullptr, abort_on_error); 19630399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers visitor.WalkStack(false); 19640aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (dex_pc != nullptr) { 19650399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers *dex_pc = visitor.dex_pc_; 1966d07986fad0d08cdf05505cf9230714a2cf0dd9aeElliott Hughes } 19670399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers return visitor.method_; 1968ee0d3fb2fbd736484fe8c3177a4e965ea86d1c65TDYa} 196933dc7717cd16592bcc825350bea6305be9eb2ea1jeffhao 197062d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian RogersThrowLocation Thread::GetCurrentLocationForThrow() { 197162d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers Context* context = GetLongJumpContext(); 1972f9df5c1639a9418fcdf70476556a4c30b210701eAndreas Gampe CurrentMethodVisitor visitor(this, context, true); 197362d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers visitor.WalkStack(false); 197462d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers ReleaseLongJumpContext(context); 197562d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers return ThrowLocation(visitor.this_object_, visitor.method_, visitor.dex_pc_); 197662d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers} 197762d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers 1978dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogersbool Thread::HoldsLock(mirror::Object* object) const { 19790aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (object == nullptr) { 19805f79133a435ebcb20000370d56046fe01201dd80Elliott Hughes return false; 19815f79133a435ebcb20000370d56046fe01201dd80Elliott Hughes } 1982dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers return object->GetLockOwnerThreadId() == GetThreadId(); 19835f79133a435ebcb20000370d56046fe01201dd80Elliott Hughes} 19845f79133a435ebcb20000370d56046fe01201dd80Elliott Hughes 198540e3bacfd57bca2ca39c1caec64680bd0ed4a16dIan Rogers// RootVisitor parameters are: (const Object* obj, size_t vreg, const StackVisitor* visitor). 198640e3bacfd57bca2ca39c1caec64680bd0ed4a16dIan Rogerstemplate <typename RootVisitor> 19870399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogersclass ReferenceMapVisitor : public StackVisitor { 1988d6b1f6190c8ec42facb08aca34b093244774b318Ian Rogers public: 19897a22fa657b972e8323692368975bc5a7be1cc0f5Ian Rogers ReferenceMapVisitor(Thread* thread, Context* context, const RootVisitor& visitor) 1990b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) 19917a22fa657b972e8323692368975bc5a7be1cc0f5Ian Rogers : StackVisitor(thread, context), visitor_(visitor) {} 1992d6b1f6190c8ec42facb08aca34b093244774b318Ian Rogers 1993b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers bool VisitFrame() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 19946a4be3a6226cec645cf905dd352e44f7968a7fa4Brian Carlstrom if (false) { 19950399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers LOG(INFO) << "Visiting stack roots in " << PrettyMethod(GetMethod()) 1996714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz << StringPrintf("@ PC:%04x", GetDexPc()); 19976a4be3a6226cec645cf905dd352e44f7968a7fa4Brian Carlstrom } 19980399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers ShadowFrame* shadow_frame = GetCurrentShadowFrame(); 19990aded089f565008ba5908e395e5914ca4f91f2deDave Allison if (shadow_frame != nullptr) { 2000714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz VisitShadowFrame(shadow_frame); 2001714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz } else { 2002714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz VisitQuickFrame(); 2003714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz } 2004714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz return true; 2005714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz } 2006714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz 2007714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz void VisitShadowFrame(ShadowFrame* shadow_frame) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 200892d1a666534aa98b173bb33dc5dba86b2d48aedbHiroshi Yamauchi mirror::ArtMethod** method_addr = shadow_frame->GetMethodAddress(); 200992d1a666534aa98b173bb33dc5dba86b2d48aedbHiroshi Yamauchi visitor_(reinterpret_cast<mirror::Object**>(method_addr), 0 /*ignored*/, this); 201092d1a666534aa98b173bb33dc5dba86b2d48aedbHiroshi Yamauchi mirror::ArtMethod* m = *method_addr; 201192d1a666534aa98b173bb33dc5dba86b2d48aedbHiroshi Yamauchi DCHECK(m != nullptr); 2012714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz size_t num_regs = shadow_frame->NumberOfVRegs(); 2013714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz if (m->IsNative() || shadow_frame->HasReferenceArray()) { 2014eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier // handle scope for JNI or References for interpreter. 2015714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz for (size_t reg = 0; reg < num_regs; ++reg) { 2016714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz mirror::Object* ref = shadow_frame->GetVRegReference(reg); 2017714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz if (ref != nullptr) { 2018714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz mirror::Object* new_ref = ref; 2019714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz visitor_(&new_ref, reg, this); 2020714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz if (new_ref != ref) { 2021714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz shadow_frame->SetVRegReference(reg, new_ref); 2022714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz } 2023714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz } 2024714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz } 2025714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz } else { 2026714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz // Java method. 2027714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz // Portable path use DexGcMap and store in Method.native_gc_map_. 2028714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz const uint8_t* gc_map = m->GetNativeGcMap(); 2029714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz CHECK(gc_map != nullptr) << PrettyMethod(m); 2030714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz verifier::DexPcToReferenceMap dex_gc_map(gc_map); 2031714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz uint32_t dex_pc = shadow_frame->GetDexPC(); 2032714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz const uint8_t* reg_bitmap = dex_gc_map.FindBitMap(dex_pc); 2033714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz DCHECK(reg_bitmap != nullptr); 2034714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz num_regs = std::min(dex_gc_map.RegWidth() * 8, num_regs); 2035714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz for (size_t reg = 0; reg < num_regs; ++reg) { 2036714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz if (TestBitmap(reg, reg_bitmap)) { 20372dd0e2cea360bc9206eb88ecc40d259e796c239dIan Rogers mirror::Object* ref = shadow_frame->GetVRegReference(reg); 2038423d2a3dcbb260b020efb5da59f784c9f02accbfMathieu Chartier if (ref != nullptr) { 2039815873ecc312b1d231acce71e1a16f42cdaf09f2Mathieu Chartier mirror::Object* new_ref = ref; 2040815873ecc312b1d231acce71e1a16f42cdaf09f2Mathieu Chartier visitor_(&new_ref, reg, this); 2041423d2a3dcbb260b020efb5da59f784c9f02accbfMathieu Chartier if (new_ref != ref) { 2042714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz shadow_frame->SetVRegReference(reg, new_ref); 2043423d2a3dcbb260b020efb5da59f784c9f02accbfMathieu Chartier } 2044ce4cc0d1818e872c1c7f3c3519a82259afd5c288TDYa } 2045ce4cc0d1818e872c1c7f3c3519a82259afd5c288TDYa } 2046714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz } 2047714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz } 2048714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz } 2049714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz 2050714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz private: 2051714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz void VisitQuickFrame() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 2052cf4035a4c41ccfcc3e89a0cee25f5218a11b0705Andreas Gampe StackReference<mirror::ArtMethod>* cur_quick_frame = GetCurrentQuickFrame(); 2053cf4035a4c41ccfcc3e89a0cee25f5218a11b0705Andreas Gampe mirror::ArtMethod* m = cur_quick_frame->AsMirrorPtr(); 2054cf4035a4c41ccfcc3e89a0cee25f5218a11b0705Andreas Gampe mirror::ArtMethod* old_method = m; 2055cf4035a4c41ccfcc3e89a0cee25f5218a11b0705Andreas Gampe visitor_(reinterpret_cast<mirror::Object**>(&m), 0 /*ignored*/, this); 2056cf4035a4c41ccfcc3e89a0cee25f5218a11b0705Andreas Gampe if (m != old_method) { 2057cf4035a4c41ccfcc3e89a0cee25f5218a11b0705Andreas Gampe cur_quick_frame->Assign(m); 2058cf4035a4c41ccfcc3e89a0cee25f5218a11b0705Andreas Gampe } 2059cf4035a4c41ccfcc3e89a0cee25f5218a11b0705Andreas Gampe 2060714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz // Process register map (which native and runtime methods don't have) 2061714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz if (!m->IsNative() && !m->IsRuntimeMethod() && !m->IsProxyMethod()) { 2062714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz const uint8_t* native_gc_map = m->GetNativeGcMap(); 2063714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz CHECK(native_gc_map != nullptr) << PrettyMethod(m); 2064bfd9a4378eacaf2dc2bbe05ad48c5164fc93c9feMathieu Chartier const DexFile::CodeItem* code_item = m->GetCodeItem(); 2065714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz DCHECK(code_item != nullptr) << PrettyMethod(m); // Can't be nullptr or how would we compile its instructions? 2066714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz NativePcOffsetToReferenceMap map(native_gc_map); 2067714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz size_t num_regs = std::min(map.RegWidth() * 8, 2068714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz static_cast<size_t>(code_item->registers_size_)); 2069714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz if (num_regs > 0) { 20704c1c510bea6f20f4d8b09e15547cd2967ad51c88Vladimir Marko Runtime* runtime = Runtime::Current(); 20714c1c510bea6f20f4d8b09e15547cd2967ad51c88Vladimir Marko const void* entry_point = runtime->GetInstrumentation()->GetQuickCodeFor(m); 20724c1c510bea6f20f4d8b09e15547cd2967ad51c88Vladimir Marko uintptr_t native_pc_offset = m->NativePcOffset(GetCurrentQuickFramePc(), entry_point); 20734c1c510bea6f20f4d8b09e15547cd2967ad51c88Vladimir Marko const uint8_t* reg_bitmap = map.FindBitMap(native_pc_offset); 20740aded089f565008ba5908e395e5914ca4f91f2deDave Allison DCHECK(reg_bitmap != nullptr); 20754c1c510bea6f20f4d8b09e15547cd2967ad51c88Vladimir Marko const void* code_pointer = mirror::ArtMethod::EntryPointToCodePointer(entry_point); 20764c1c510bea6f20f4d8b09e15547cd2967ad51c88Vladimir Marko const VmapTable vmap_table(m->GetVmapTable(code_pointer)); 20774c1c510bea6f20f4d8b09e15547cd2967ad51c88Vladimir Marko QuickMethodFrameInfo frame_info = m->GetQuickFrameInfo(code_pointer); 2078714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz // For all dex registers in the bitmap 2079cf4035a4c41ccfcc3e89a0cee25f5218a11b0705Andreas Gampe StackReference<mirror::ArtMethod>* cur_quick_frame = GetCurrentQuickFrame(); 2080714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz DCHECK(cur_quick_frame != nullptr); 2081ce4cc0d1818e872c1c7f3c3519a82259afd5c288TDYa for (size_t reg = 0; reg < num_regs; ++reg) { 2082714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz // Does this register hold a reference? 2083ce4cc0d1818e872c1c7f3c3519a82259afd5c288TDYa if (TestBitmap(reg, reg_bitmap)) { 2084714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz uint32_t vmap_offset; 2085714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz if (vmap_table.IsInContext(reg, kReferenceVReg, &vmap_offset)) { 20867624d25dad2d1ba25969ae704fccf68649103ae5Vladimir Marko int vmap_reg = vmap_table.ComputeRegister(frame_info.CoreSpillMask(), vmap_offset, 20877624d25dad2d1ba25969ae704fccf68649103ae5Vladimir Marko kReferenceVReg); 2088714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz // This is sound as spilled GPRs will be word sized (ie 32 or 64bit). 2089714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz mirror::Object** ref_addr = reinterpret_cast<mirror::Object**>(GetGPRAddress(vmap_reg)); 2090714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz if (*ref_addr != nullptr) { 2091714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz visitor_(ref_addr, reg, this); 2092423d2a3dcbb260b020efb5da59f784c9f02accbfMathieu Chartier } 2093714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz } else { 2094714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz StackReference<mirror::Object>* ref_addr = 2095714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz reinterpret_cast<StackReference<mirror::Object>*>( 20967624d25dad2d1ba25969ae704fccf68649103ae5Vladimir Marko GetVRegAddr(cur_quick_frame, code_item, frame_info.CoreSpillMask(), 20977624d25dad2d1ba25969ae704fccf68649103ae5Vladimir Marko frame_info.FpSpillMask(), frame_info.FrameSizeInBytes(), reg)); 2098714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz mirror::Object* ref = ref_addr->AsMirrorPtr(); 2099714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz if (ref != nullptr) { 2100714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz mirror::Object* new_ref = ref; 2101714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz visitor_(&new_ref, reg, this); 2102714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz if (ref != new_ref) { 2103714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz ref_addr->Assign(new_ref); 2104423d2a3dcbb260b020efb5da59f784c9f02accbfMathieu Chartier } 21050399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers } 2106d6b1f6190c8ec42facb08aca34b093244774b318Ian Rogers } 21074f894e385e8ac018f078be75fea0a45696626b15Shih-wei Liao } 2108d6b1f6190c8ec42facb08aca34b093244774b318Ian Rogers } 2109d6b1f6190c8ec42facb08aca34b093244774b318Ian Rogers } 2110d6b1f6190c8ec42facb08aca34b093244774b318Ian Rogers } 2111d6b1f6190c8ec42facb08aca34b093244774b318Ian Rogers } 2112d6b1f6190c8ec42facb08aca34b093244774b318Ian Rogers 2113815873ecc312b1d231acce71e1a16f42cdaf09f2Mathieu Chartier static bool TestBitmap(size_t reg, const uint8_t* reg_vector) { 2114815873ecc312b1d231acce71e1a16f42cdaf09f2Mathieu Chartier return ((reg_vector[reg / kBitsPerByte] >> (reg % kBitsPerByte)) & 0x01) != 0; 2115d6b1f6190c8ec42facb08aca34b093244774b318Ian Rogers } 2116d6b1f6190c8ec42facb08aca34b093244774b318Ian Rogers 21176f1c94968ada57da433debf8e2d1b38a80ceb510Mathieu Chartier // Visitor for when we visit a root. 211840e3bacfd57bca2ca39c1caec64680bd0ed4a16dIan Rogers const RootVisitor& visitor_; 2119d6b1f6190c8ec42facb08aca34b093244774b318Ian Rogers}; 2120d6b1f6190c8ec42facb08aca34b093244774b318Ian Rogers 21216f1c94968ada57da433debf8e2d1b38a80ceb510Mathieu Chartierclass RootCallbackVisitor { 21226f1c94968ada57da433debf8e2d1b38a80ceb510Mathieu Chartier public: 212383c8ee000d525017ead8753fce6bc1020249b96aMathieu Chartier RootCallbackVisitor(RootCallback* callback, void* arg, uint32_t tid) 212483c8ee000d525017ead8753fce6bc1020249b96aMathieu Chartier : callback_(callback), arg_(arg), tid_(tid) {} 21256f1c94968ada57da433debf8e2d1b38a80ceb510Mathieu Chartier 2126815873ecc312b1d231acce71e1a16f42cdaf09f2Mathieu Chartier void operator()(mirror::Object** obj, size_t, const StackVisitor*) const { 2127815873ecc312b1d231acce71e1a16f42cdaf09f2Mathieu Chartier callback_(obj, arg_, tid_, kRootJavaFrame); 21286f1c94968ada57da433debf8e2d1b38a80ceb510Mathieu Chartier } 21296f1c94968ada57da433debf8e2d1b38a80ceb510Mathieu Chartier 21306f1c94968ada57da433debf8e2d1b38a80ceb510Mathieu Chartier private: 213183c8ee000d525017ead8753fce6bc1020249b96aMathieu Chartier RootCallback* const callback_; 213240e3bacfd57bca2ca39c1caec64680bd0ed4a16dIan Rogers void* const arg_; 213383c8ee000d525017ead8753fce6bc1020249b96aMathieu Chartier const uint32_t tid_; 21346f1c94968ada57da433debf8e2d1b38a80ceb510Mathieu Chartier}; 21356f1c94968ada57da433debf8e2d1b38a80ceb510Mathieu Chartier 2136590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartiervoid Thread::SetClassLoaderOverride(mirror::ClassLoader* class_loader_override) { 21374e30541a92381fb280cd0be9a1763b713ee4d64cMathieu Chartier VerifyObject(class_loader_override); 2138dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.class_loader_override = class_loader_override; 2139590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier} 2140590fee9e8972f872301c2d16a575d579ee564beeMathieu Chartier 214183c8ee000d525017ead8753fce6bc1020249b96aMathieu Chartiervoid Thread::VisitRoots(RootCallback* visitor, void* arg) { 214283c8ee000d525017ead8753fce6bc1020249b96aMathieu Chartier uint32_t thread_id = GetThreadId(); 2143dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers if (tlsPtr_.opeer != nullptr) { 2144dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers visitor(&tlsPtr_.opeer, arg, thread_id, kRootThreadObject); 2145cfaa455374aae0a08c8cb28b5bb306b17866d652Ian Rogers } 2146fd3077e4b9ebadd281777310d26e64443858f653Sebastien Hertz if (tlsPtr_.exception != nullptr && tlsPtr_.exception != GetDeoptimizationException()) { 2147dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers visitor(reinterpret_cast<mirror::Object**>(&tlsPtr_.exception), arg, thread_id, kRootNativeStack); 2148d369bb76dee0df2d2a106e9bf7f4e6446ed6deaaElliott Hughes } 2149dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.throw_location.VisitRoots(visitor, arg); 2150dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers if (tlsPtr_.class_loader_override != nullptr) { 2151dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers visitor(reinterpret_cast<mirror::Object**>(&tlsPtr_.class_loader_override), arg, thread_id, 2152815873ecc312b1d231acce71e1a16f42cdaf09f2Mathieu Chartier kRootNativeStack); 215340381fb9dc4b4cf274f1e58b2cdf4396202c6189Brian Carlstrom } 215443d8bb870fadd4775a8513a1df955cdf66ad4b92Mathieu Chartier if (tlsPtr_.monitor_enter_object != nullptr) { 215543d8bb870fadd4775a8513a1df955cdf66ad4b92Mathieu Chartier visitor(&tlsPtr_.monitor_enter_object, arg, thread_id, kRootNativeStack); 215643d8bb870fadd4775a8513a1df955cdf66ad4b92Mathieu Chartier } 2157dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.jni_env->locals.VisitRoots(visitor, arg, thread_id, kRootJNILocal); 2158dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.jni_env->monitors.VisitRoots(visitor, arg, thread_id, kRootJNIMonitor); 2159eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier HandleScopeVisitRoots(visitor, arg, thread_id); 2160dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers if (tlsPtr_.debug_invoke_req != nullptr) { 2161dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.debug_invoke_req->VisitRoots(visitor, arg, thread_id, kRootDebugger); 21623b05e9ba874449dbff65b01b8781001f7d93eea6Mathieu Chartier } 2163dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers if (tlsPtr_.single_step_control != nullptr) { 2164dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.single_step_control->VisitRoots(visitor, arg, thread_id, kRootDebugger); 21653b05e9ba874449dbff65b01b8781001f7d93eea6Mathieu Chartier } 2166714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz if (tlsPtr_.deoptimization_shadow_frame != nullptr) { 2167714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz RootCallbackVisitor visitorToCallback(visitor, arg, thread_id); 2168714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz ReferenceMapVisitor<RootCallbackVisitor> mapper(this, nullptr, visitorToCallback); 2169714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz for (ShadowFrame* shadow_frame = tlsPtr_.deoptimization_shadow_frame; shadow_frame != nullptr; 2170714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz shadow_frame = shadow_frame->GetLink()) { 2171714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz mapper.VisitShadowFrame(shadow_frame); 2172714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz } 2173714f175bd66d03225927a84f3d5dbc923c5a3e7eSebastien Hertz } 21742a0d4ec9532a89abe722e5babdfbb846ffaad721Andreas Gampe if (tlsPtr_.shadow_frame_under_construction != nullptr) { 21752a0d4ec9532a89abe722e5babdfbb846ffaad721Andreas Gampe RootCallbackVisitor visitorToCallback(visitor, arg, thread_id); 21762a0d4ec9532a89abe722e5babdfbb846ffaad721Andreas Gampe ReferenceMapVisitor<RootCallbackVisitor> mapper(this, nullptr, visitorToCallback); 21772a0d4ec9532a89abe722e5babdfbb846ffaad721Andreas Gampe for (ShadowFrame* shadow_frame = tlsPtr_.shadow_frame_under_construction; 21782a0d4ec9532a89abe722e5babdfbb846ffaad721Andreas Gampe shadow_frame != nullptr; 21792a0d4ec9532a89abe722e5babdfbb846ffaad721Andreas Gampe shadow_frame = shadow_frame->GetLink()) { 21802a0d4ec9532a89abe722e5babdfbb846ffaad721Andreas Gampe mapper.VisitShadowFrame(shadow_frame); 21812a0d4ec9532a89abe722e5babdfbb846ffaad721Andreas Gampe } 21822a0d4ec9532a89abe722e5babdfbb846ffaad721Andreas Gampe } 2183d6b1f6190c8ec42facb08aca34b093244774b318Ian Rogers // Visit roots on this thread's stack 21840399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers Context* context = GetLongJumpContext(); 218583c8ee000d525017ead8753fce6bc1020249b96aMathieu Chartier RootCallbackVisitor visitorToCallback(visitor, arg, thread_id); 21867a22fa657b972e8323692368975bc5a7be1cc0f5Ian Rogers ReferenceMapVisitor<RootCallbackVisitor> mapper(this, context, visitorToCallback); 21870399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers mapper.WalkStack(); 21880399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers ReleaseLongJumpContext(context); 2189423d2a3dcbb260b020efb5da59f784c9f02accbfMathieu Chartier for (instrumentation::InstrumentationStackFrame& frame : *GetInstrumentationStack()) { 2190423d2a3dcbb260b020efb5da59f784c9f02accbfMathieu Chartier if (frame.this_object_ != nullptr) { 2191815873ecc312b1d231acce71e1a16f42cdaf09f2Mathieu Chartier visitor(&frame.this_object_, arg, thread_id, kRootJavaFrame); 219262d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers } 2193423d2a3dcbb260b020efb5da59f784c9f02accbfMathieu Chartier DCHECK(frame.method_ != nullptr); 2194815873ecc312b1d231acce71e1a16f42cdaf09f2Mathieu Chartier visitor(reinterpret_cast<mirror::Object**>(&frame.method_), arg, thread_id, kRootJavaFrame); 219562d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers } 2196410c0c876f326e14c176a39ba21fc4dd3f7db8abElliott Hughes} 2197410c0c876f326e14c176a39ba21fc4dd3f7db8abElliott Hughes 21984e30541a92381fb280cd0be9a1763b713ee4d64cMathieu Chartierstatic void VerifyRoot(mirror::Object** root, void* /*arg*/, uint32_t /*thread_id*/, 21994e30541a92381fb280cd0be9a1763b713ee4d64cMathieu Chartier RootType /*root_type*/) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 22004e30541a92381fb280cd0be9a1763b713ee4d64cMathieu Chartier VerifyObject(*root); 2201250455229aa0cc07bbd18174efe510bd52631a99jeffhao} 2202250455229aa0cc07bbd18174efe510bd52631a99jeffhao 220304d7aa92bc5548bc4d272b9480614f06248194ccIan Rogersvoid Thread::VerifyStackImpl() { 2204700a402244a1a423da4f3ba8032459f4b65fa18fIan Rogers std::unique_ptr<Context> context(Context::Create()); 220589bb1449bbef1863b12dfa3813ab7c78be94316fMathieu Chartier RootCallbackVisitor visitorToCallback(VerifyRoot, Runtime::Current()->GetHeap(), GetThreadId()); 220604d7aa92bc5548bc4d272b9480614f06248194ccIan Rogers ReferenceMapVisitor<RootCallbackVisitor> mapper(this, context.get(), visitorToCallback); 22070399dde18753aa9bd2bd0d7cf60beef154d164a4Ian Rogers mapper.WalkStack(); 2208250455229aa0cc07bbd18174efe510bd52631a99jeffhao} 2209250455229aa0cc07bbd18174efe510bd52631a99jeffhao 221000f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers// Set the stack end to that to be used during a stack overflow 221100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogersvoid Thread::SetStackEndForStackOverflow() { 22127571e8b761ebc2c923525e12ea9fcf07e62cb33eBrian Carlstrom // During stack overflow we allow use of the full stack. 2213dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers if (tlsPtr_.stack_end == tlsPtr_.stack_begin) { 22147571e8b761ebc2c923525e12ea9fcf07e62cb33eBrian Carlstrom // However, we seem to have already extended to use the full stack. 22157571e8b761ebc2c923525e12ea9fcf07e62cb33eBrian Carlstrom LOG(ERROR) << "Need to increase kStackOverflowReservedBytes (currently " 22167ea6f79bbddd69d5db86a8656a31aaaf64ae2582Andreas Gampe << GetStackOverflowReservedBytes(kRuntimeISA) << ")?"; 22177571e8b761ebc2c923525e12ea9fcf07e62cb33eBrian Carlstrom DumpStack(LOG(ERROR)); 22187571e8b761ebc2c923525e12ea9fcf07e62cb33eBrian Carlstrom LOG(FATAL) << "Recursive stack overflow."; 221900f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 222000f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 2221dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.stack_end = tlsPtr_.stack_begin; 222203c9785a8a6d712775cf406c4371d0227c44148fDave Allison 222303c9785a8a6d712775cf406c4371d0227c44148fDave Allison // Remove the stack overflow protection if is it set up. 222403c9785a8a6d712775cf406c4371d0227c44148fDave Allison bool implicit_stack_check = !Runtime::Current()->ExplicitStackOverflowChecks(); 222503c9785a8a6d712775cf406c4371d0227c44148fDave Allison if (implicit_stack_check) { 222603c9785a8a6d712775cf406c4371d0227c44148fDave Allison if (!UnprotectStack()) { 222703c9785a8a6d712775cf406c4371d0227c44148fDave Allison LOG(ERROR) << "Unable to remove stack protection for stack overflow"; 222803c9785a8a6d712775cf406c4371d0227c44148fDave Allison } 222903c9785a8a6d712775cf406c4371d0227c44148fDave Allison } 223000f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers} 223100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 2232e6da9af8dfe0a3e3fbc2be700554f6478380e7b9Mathieu Chartiervoid Thread::SetTlab(byte* start, byte* end) { 2233692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier DCHECK_LE(start, end); 2234dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.thread_local_start = start; 2235dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.thread_local_pos = tlsPtr_.thread_local_start; 2236dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.thread_local_end = end; 2237dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers tlsPtr_.thread_local_objects = 0; 2238692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier} 2239692fafd9778141fa6ef0048c9569abd7ee0253bfMathieu Chartier 2240c93c530efc175954160c3834c93961a1a946a35aHiroshi Yamauchibool Thread::HasTlab() const { 2241dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers bool has_tlab = tlsPtr_.thread_local_pos != nullptr; 2242c93c530efc175954160c3834c93961a1a946a35aHiroshi Yamauchi if (has_tlab) { 2243dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers DCHECK(tlsPtr_.thread_local_start != nullptr && tlsPtr_.thread_local_end != nullptr); 2244c93c530efc175954160c3834c93961a1a946a35aHiroshi Yamauchi } else { 2245dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers DCHECK(tlsPtr_.thread_local_start == nullptr && tlsPtr_.thread_local_end == nullptr); 2246c93c530efc175954160c3834c93961a1a946a35aHiroshi Yamauchi } 2247c93c530efc175954160c3834c93961a1a946a35aHiroshi Yamauchi return has_tlab; 2248c93c530efc175954160c3834c93961a1a946a35aHiroshi Yamauchi} 2249c93c530efc175954160c3834c93961a1a946a35aHiroshi Yamauchi 2250330304de14dc7118b45b8e7b5bd11a172fa61701Elliott Hughesstd::ostream& operator<<(std::ostream& os, const Thread& thread) { 225100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers thread.ShortDump(os); 2252330304de14dc7118b45b8e7b5bd11a172fa61701Elliott Hughes return os; 2253330304de14dc7118b45b8e7b5bd11a172fa61701Elliott Hughes} 2254330304de14dc7118b45b8e7b5bd11a172fa61701Elliott Hughes 225503c9785a8a6d712775cf406c4371d0227c44148fDave Allisonvoid Thread::ProtectStack() { 225603c9785a8a6d712775cf406c4371d0227c44148fDave Allison void* pregion = tlsPtr_.stack_begin - kStackOverflowProtectedSize; 225703c9785a8a6d712775cf406c4371d0227c44148fDave Allison VLOG(threads) << "Protecting stack at " << pregion; 225803c9785a8a6d712775cf406c4371d0227c44148fDave Allison if (mprotect(pregion, kStackOverflowProtectedSize, PROT_NONE) == -1) { 225903c9785a8a6d712775cf406c4371d0227c44148fDave Allison LOG(FATAL) << "Unable to create protected region in stack for implicit overflow check. " 226003c9785a8a6d712775cf406c4371d0227c44148fDave Allison "Reason: " 226103c9785a8a6d712775cf406c4371d0227c44148fDave Allison << strerror(errno) << " size: " << kStackOverflowProtectedSize; 226203c9785a8a6d712775cf406c4371d0227c44148fDave Allison } 226303c9785a8a6d712775cf406c4371d0227c44148fDave Allison} 226403c9785a8a6d712775cf406c4371d0227c44148fDave Allison 226503c9785a8a6d712775cf406c4371d0227c44148fDave Allisonbool Thread::UnprotectStack() { 226603c9785a8a6d712775cf406c4371d0227c44148fDave Allison void* pregion = tlsPtr_.stack_begin - kStackOverflowProtectedSize; 226703c9785a8a6d712775cf406c4371d0227c44148fDave Allison VLOG(threads) << "Unprotecting stack at " << pregion; 226803c9785a8a6d712775cf406c4371d0227c44148fDave Allison return mprotect(pregion, kStackOverflowProtectedSize, PROT_READ|PROT_WRITE) == 0; 226903c9785a8a6d712775cf406c4371d0227c44148fDave Allison} 227003c9785a8a6d712775cf406c4371d0227c44148fDave Allison 227103c9785a8a6d712775cf406c4371d0227c44148fDave Allison 22728daa0929f08a3080ea64dbd4e997e72f411e6fc9Elliott Hughes} // namespace art 2273