jdwp_event.cc revision 4d25df3f76f864b7629ac8c0046d46997f293d8d
1872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes/* 2872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Copyright (C) 2008 The Android Open Source Project 3872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * 4872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Licensed under the Apache License, Version 2.0 (the "License"); 5872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * you may not use this file except in compliance with the License. 6872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * You may obtain a copy of the License at 7872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * 8872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * http://www.apache.org/licenses/LICENSE-2.0 9872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * 10872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Unless required by applicable law or agreed to in writing, software 11872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * distributed under the License is distributed on an "AS IS" BASIS, 12872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * See the License for the specific language governing permissions and 14872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * limitations under the License. 15872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 1607ed66b5ae659c452cbe1ab20c3dbf1d6f546461Elliott Hughes 17872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes#include "jdwp/jdwp_event.h" 18872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 1907ed66b5ae659c452cbe1ab20c3dbf1d6f546461Elliott Hughes#include <stddef.h> /* for offsetof() */ 20872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes#include <stdlib.h> 21872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes#include <string.h> 22872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes#include <unistd.h> 23872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 2407ed66b5ae659c452cbe1ab20c3dbf1d6f546461Elliott Hughes#include "base/logging.h" 25e222ee0b794f941af4fb1b32fb8224e32942ea7bElliott Hughes#include "base/stringprintf.h" 2607ed66b5ae659c452cbe1ab20c3dbf1d6f546461Elliott Hughes#include "debugger.h" 2707ed66b5ae659c452cbe1ab20c3dbf1d6f546461Elliott Hughes#include "jdwp/jdwp_constants.h" 2807ed66b5ae659c452cbe1ab20c3dbf1d6f546461Elliott Hughes#include "jdwp/jdwp_expand_buf.h" 2907ed66b5ae659c452cbe1ab20c3dbf1d6f546461Elliott Hughes#include "jdwp/jdwp_priv.h" 30693ff61274cd2c9b8eb7e68c370f84a911b8ca52Ian Rogers#include "thread-inl.h" 3107ed66b5ae659c452cbe1ab20c3dbf1d6f546461Elliott Hughes 32872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes/* 33872d4ec7225444d9400d30f9027247deb91012fdElliott HughesGeneral notes: 34872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 35872d4ec7225444d9400d30f9027247deb91012fdElliott HughesThe event add/remove stuff usually happens from the debugger thread, 36872d4ec7225444d9400d30f9027247deb91012fdElliott Hughesin response to requests from the debugger, but can also happen as the 37872d4ec7225444d9400d30f9027247deb91012fdElliott Hughesresult of an event in an arbitrary thread (e.g. an event with a "count" 38872d4ec7225444d9400d30f9027247deb91012fdElliott Hughesmod expires). It's important to keep the event list locked when processing 39872d4ec7225444d9400d30f9027247deb91012fdElliott Hughesevents. 40872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 41872d4ec7225444d9400d30f9027247deb91012fdElliott HughesEvent posting can happen from any thread. The JDWP thread will not usually 42872d4ec7225444d9400d30f9027247deb91012fdElliott Hughespost anything but VM start/death, but if a JDWP request causes a class 43872d4ec7225444d9400d30f9027247deb91012fdElliott Hughesto be loaded, the ClassPrepare event will come from the JDWP thread. 44872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 45872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 46872d4ec7225444d9400d30f9027247deb91012fdElliott HughesWe can have serialization issues when we post an event to the debugger. 47872d4ec7225444d9400d30f9027247deb91012fdElliott HughesFor example, a thread could send an "I hit a breakpoint and am suspending 48872d4ec7225444d9400d30f9027247deb91012fdElliott Hughesmyself" message to the debugger. Before it manages to suspend itself, the 49872d4ec7225444d9400d30f9027247deb91012fdElliott Hughesdebugger's response ("not interested, resume thread") arrives and is 50872d4ec7225444d9400d30f9027247deb91012fdElliott Hughesprocessed. We try to resume a thread that hasn't yet suspended. 51872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 52872d4ec7225444d9400d30f9027247deb91012fdElliott HughesThis means that, after posting an event to the debugger, we need to wait 53872d4ec7225444d9400d30f9027247deb91012fdElliott Hughesfor the event thread to suspend itself (and, potentially, all other threads) 54872d4ec7225444d9400d30f9027247deb91012fdElliott Hughesbefore processing any additional requests from the debugger. While doing 55872d4ec7225444d9400d30f9027247deb91012fdElliott Hughesso we need to be aware that multiple threads may be hitting breakpoints 56872d4ec7225444d9400d30f9027247deb91012fdElliott Hughesor other events simultaneously, so we either need to wait for all of them 57872d4ec7225444d9400d30f9027247deb91012fdElliott Hughesor serialize the events with each other. 58872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 59872d4ec7225444d9400d30f9027247deb91012fdElliott HughesThe current mechanism works like this: 60872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes Event thread: 61872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes - If I'm going to suspend, grab the "I am posting an event" token. Wait 62872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes for it if it's not currently available. 63872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes - Post the event to the debugger. 64872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes - If appropriate, suspend others and then myself. As part of suspending 65872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes myself, release the "I am posting" token. 66872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes JDWP thread: 67872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes - When an event arrives, see if somebody is posting an event. If so, 68872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes sleep until we can acquire the "I am posting an event" token. Release 69872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes it immediately and continue processing -- the event we have already 70872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes received should not interfere with other events that haven't yet 71872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes been posted. 72872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 73872d4ec7225444d9400d30f9027247deb91012fdElliott HughesSome care must be taken to avoid deadlock: 74872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 75872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes - thread A and thread B exit near-simultaneously, and post thread-death 76872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes events with a "suspend all" clause 77872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes - thread A gets the event token, thread B sits and waits for it 78872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes - thread A wants to suspend all other threads, but thread B is waiting 79872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes for the token and can't be suspended 80872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 81872d4ec7225444d9400d30f9027247deb91012fdElliott HughesSo we need to mark thread B in such a way that thread A doesn't wait for it. 82872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 83872d4ec7225444d9400d30f9027247deb91012fdElliott HughesIf we just bracket the "grab event token" call with a change to VMWAIT 84872d4ec7225444d9400d30f9027247deb91012fdElliott Hughesbefore sleeping, the switch back to RUNNING state when we get the token 85872d4ec7225444d9400d30f9027247deb91012fdElliott Hugheswill cause thread B to suspend (remember, thread A's global suspend is 86872d4ec7225444d9400d30f9027247deb91012fdElliott Hughesstill in force, even after it releases the token). Suspending while 87872d4ec7225444d9400d30f9027247deb91012fdElliott Hughesholding the event token is very bad, because it prevents the JDWP thread 88872d4ec7225444d9400d30f9027247deb91012fdElliott Hughesfrom processing incoming messages. 89872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 90872d4ec7225444d9400d30f9027247deb91012fdElliott HughesWe need to change to VMWAIT state at the *start* of posting an event, 91872d4ec7225444d9400d30f9027247deb91012fdElliott Hughesand stay there until we either finish posting the event or decide to 92872d4ec7225444d9400d30f9027247deb91012fdElliott Hughesput ourselves to sleep. That way we don't interfere with anyone else and 93872d4ec7225444d9400d30f9027247deb91012fdElliott Hughesdon't allow anyone else to interfere with us. 94872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes*/ 95872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 96872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 97872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes#define kJdwpEventCommandSet 64 98872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes#define kJdwpCompositeCommand 100 99872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 100872d4ec7225444d9400d30f9027247deb91012fdElliott Hughesnamespace art { 101872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 102872d4ec7225444d9400d30f9027247deb91012fdElliott Hughesnamespace JDWP { 103872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 104872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes/* 105872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Stuff to compare against when deciding if a mod matches. Only the 106872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * values for mods valid for the event being evaluated will be filled in. 107872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * The rest will be zeroed. 108872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 109872d4ec7225444d9400d30f9027247deb91012fdElliott Hughesstruct ModBasket { 110162fd33474038f0de0388338ca007ecf400bb3dfjeffhao ModBasket() : pLoc(NULL), threadId(0), classId(0), excepClassId(0), 111162fd33474038f0de0388338ca007ecf400bb3dfjeffhao caught(false), field(0), thisPtr(0) { } 112162fd33474038f0de0388338ca007ecf400bb3dfjeffhao 113872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes const JdwpLocation* pLoc; /* LocationOnly */ 114a215526d5c789cbef0f81a1f9aba22541a841ccaElliott Hughes std::string className; /* ClassMatch/ClassExclude */ 115872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes ObjectId threadId; /* ThreadOnly */ 116872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes RefTypeId classId; /* ClassOnly */ 117872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes RefTypeId excepClassId; /* ExceptionOnly */ 118872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes bool caught; /* ExceptionOnly */ 119872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes FieldId field; /* FieldOnly */ 120872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes ObjectId thisPtr; /* InstanceOnly */ 121872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes /* nothing for StepOnly -- handled differently */ 122872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes}; 123872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 124872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes/* 125872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Dump an event to the log file. 126872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 127872d4ec7225444d9400d30f9027247deb91012fdElliott Hughesstatic void dumpEvent(const JdwpEvent* pEvent) { 128872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes LOG(INFO) << StringPrintf("Event id=0x%4x %p (prev=%p next=%p):", pEvent->requestId, pEvent, pEvent->prev, pEvent->next); 129f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes LOG(INFO) << " kind=" << pEvent->eventKind << " susp=" << pEvent->suspend_policy << " modCount=" << pEvent->modCount; 130872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 131872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes for (int i = 0; i < pEvent->modCount; i++) { 132872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes const JdwpEventMod* pMod = &pEvent->mods[i]; 1337b3cdfcca472b779cf8745fb8460935e56229f11Elliott Hughes LOG(INFO) << " " << pMod->modKind; 134872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes /* TODO - show details */ 135872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 136872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes} 137872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 138138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertzstatic bool NeedsFullDeoptimization(JdwpEventKind eventKind) { 139138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz switch (eventKind) { 140138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz case EK_METHOD_ENTRY: 141138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz case EK_METHOD_EXIT: 142138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz case EK_METHOD_EXIT_WITH_RETURN_VALUE: 143138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz case EK_SINGLE_STEP: 144138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz return true; 145138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz default: 146138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz return false; 147138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz } 148138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz} 149138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz 150872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes/* 151872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Add an event to the list. Ordering is not important. 152872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * 153872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * If something prevents the event from being registered, e.g. it's a 154872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * single-step request on a thread that doesn't exist, the event will 155872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * not be added to the list, and an appropriate error will be returned. 156872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 157761928d24e4e7ed7776b52243eaf9095ad35f448Elliott HughesJdwpError JdwpState::RegisterEvent(JdwpEvent* pEvent) { 158872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes CHECK(pEvent != NULL); 159872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes CHECK(pEvent->prev == NULL); 160872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes CHECK(pEvent->next == NULL); 161872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 162872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes /* 163872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * If one or more "break"-type mods are used, register them with 164872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * the interpreter. 165872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 1664d25df3f76f864b7629ac8c0046d46997f293d8dSebastien Hertz DeoptimizationRequest req; 167872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes for (int i = 0; i < pEvent->modCount; i++) { 168872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes const JdwpEventMod* pMod = &pEvent->mods[i]; 169872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes if (pMod->modKind == MK_LOCATION_ONLY) { 170872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes /* should only be for Breakpoint, Step, and Exception */ 1714d25df3f76f864b7629ac8c0046d46997f293d8dSebastien Hertz Dbg::WatchLocation(&pMod->locationOnly.loc, &req); 172872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } else if (pMod->modKind == MK_STEP) { 173872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes /* should only be for EK_SINGLE_STEP; should only be one */ 174872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes JdwpStepSize size = static_cast<JdwpStepSize>(pMod->step.size); 175872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes JdwpStepDepth depth = static_cast<JdwpStepDepth>(pMod->step.depth); 1762435a5751431152aaeaa2faaa86b2a30d3eecfe3Elliott Hughes JdwpError status = Dbg::ConfigureStep(pMod->step.threadId, size, depth); 1772435a5751431152aaeaa2faaa86b2a30d3eecfe3Elliott Hughes if (status != ERR_NONE) { 1782435a5751431152aaeaa2faaa86b2a30d3eecfe3Elliott Hughes return status; 1792435a5751431152aaeaa2faaa86b2a30d3eecfe3Elliott Hughes } 180872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } else if (pMod->modKind == MK_FIELD_ONLY) { 181872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes /* should be for EK_FIELD_ACCESS or EK_FIELD_MODIFICATION */ 182872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes dumpEvent(pEvent); /* TODO - need for field watches */ 183872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 184872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 1854d25df3f76f864b7629ac8c0046d46997f293d8dSebastien Hertz if (NeedsFullDeoptimization(pEvent->eventKind)) { 1864d25df3f76f864b7629ac8c0046d46997f293d8dSebastien Hertz CHECK_EQ(req.kind, DeoptimizationRequest::kNothing); 1874d25df3f76f864b7629ac8c0046d46997f293d8dSebastien Hertz CHECK(req.method == nullptr); 1884d25df3f76f864b7629ac8c0046d46997f293d8dSebastien Hertz req.kind = DeoptimizationRequest::kFullDeoptimization; 1894d25df3f76f864b7629ac8c0046d46997f293d8dSebastien Hertz } 190872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 191138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz { 192138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz /* 193138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz * Add to list. 194138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz */ 195138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz MutexLock mu(Thread::Current(), event_list_lock_); 196138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz if (event_list_ != NULL) { 197138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz pEvent->next = event_list_; 198138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz event_list_->prev = pEvent; 199138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz } 200138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz event_list_ = pEvent; 201138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz ++event_list_size_; 202872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 203138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz 2044d25df3f76f864b7629ac8c0046d46997f293d8dSebastien Hertz // TODO we can do better job here since we should process only one request: the one we just 2054d25df3f76f864b7629ac8c0046d46997f293d8dSebastien Hertz // created. 2064d25df3f76f864b7629ac8c0046d46997f293d8dSebastien Hertz Dbg::RequestDeoptimization(req); 207138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz Dbg::ManageDeoptimization(); 208872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 209872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes return ERR_NONE; 210872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes} 211872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 212872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes/* 213872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Remove an event from the list. This will also remove the event from 214872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * any optimization tables, e.g. breakpoints. 215872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * 216872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Does not free the JdwpEvent. 217872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * 218872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Grab the eventLock before calling here. 219872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 220761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughesvoid JdwpState::UnregisterEvent(JdwpEvent* pEvent) { 221872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes if (pEvent->prev == NULL) { 222872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes /* head of the list */ 223f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes CHECK(event_list_ == pEvent); 224872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 225f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes event_list_ = pEvent->next; 226872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } else { 227872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes pEvent->prev->next = pEvent->next; 228872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 229872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 230872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes if (pEvent->next != NULL) { 231872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes pEvent->next->prev = pEvent->prev; 232872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes pEvent->next = NULL; 233872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 234872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes pEvent->prev = NULL; 235872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 236872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes /* 237872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Unhook us from the interpreter, if necessary. 238872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 2394d25df3f76f864b7629ac8c0046d46997f293d8dSebastien Hertz DeoptimizationRequest req; 240872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes for (int i = 0; i < pEvent->modCount; i++) { 241872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes JdwpEventMod* pMod = &pEvent->mods[i]; 242872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes if (pMod->modKind == MK_LOCATION_ONLY) { 243872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes /* should only be for Breakpoint, Step, and Exception */ 2444d25df3f76f864b7629ac8c0046d46997f293d8dSebastien Hertz Dbg::UnwatchLocation(&pMod->locationOnly.loc, &req); 245872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 246872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes if (pMod->modKind == MK_STEP) { 247872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes /* should only be for EK_SINGLE_STEP; should only be one */ 248872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes Dbg::UnconfigureStep(pMod->step.threadId); 249872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 250872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 2514d25df3f76f864b7629ac8c0046d46997f293d8dSebastien Hertz if (NeedsFullDeoptimization(pEvent->eventKind)) { 2524d25df3f76f864b7629ac8c0046d46997f293d8dSebastien Hertz CHECK_EQ(req.kind, DeoptimizationRequest::kNothing); 2534d25df3f76f864b7629ac8c0046d46997f293d8dSebastien Hertz CHECK(req.method == nullptr); 2544d25df3f76f864b7629ac8c0046d46997f293d8dSebastien Hertz req.kind = DeoptimizationRequest::kFullUndeoptimization; 2554d25df3f76f864b7629ac8c0046d46997f293d8dSebastien Hertz } 256872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 257f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes --event_list_size_; 258f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes CHECK(event_list_size_ != 0 || event_list_ == NULL); 259138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz 2604d25df3f76f864b7629ac8c0046d46997f293d8dSebastien Hertz Dbg::RequestDeoptimization(req); 261872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes} 262872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 263872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes/* 264872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Remove the event with the given ID from the list. 265872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * 266872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Failure to find the event isn't really an error, but it is a little 267872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * weird. (It looks like Eclipse will try to be extra careful and will 268872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * explicitly remove one-off single-step events.) 269872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 270761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughesvoid JdwpState::UnregisterEventById(uint32_t requestId) { 271138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz bool found = false; 272138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz { 273138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz MutexLock mu(Thread::Current(), event_list_lock_); 274872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 275138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz for (JdwpEvent* pEvent = event_list_; pEvent != nullptr; pEvent = pEvent->next) { 276138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz if (pEvent->requestId == requestId) { 277138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz found = true; 278138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz UnregisterEvent(pEvent); 279138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz EventFree(pEvent); 280138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz break; /* there can be only one with a given ID */ 281138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz } 282872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 283872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 284872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 285138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz if (found) { 286138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz Dbg::ManageDeoptimization(); 287138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz } else { 288138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz LOG(DEBUG) << StringPrintf("Odd: no match when removing event reqId=0x%04x", requestId); 289138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz } 290872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes} 291872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 292872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes/* 293872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Remove all entries from the event list. 294872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 295761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughesvoid JdwpState::UnregisterAll() { 29650b35e2fd1a68cd1240e4a9d9f363e11764957d1Ian Rogers MutexLock mu(Thread::Current(), event_list_lock_); 297872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 298f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes JdwpEvent* pEvent = event_list_; 299872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes while (pEvent != NULL) { 300872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes JdwpEvent* pNextEvent = pEvent->next; 301872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 302761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes UnregisterEvent(pEvent); 303872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes EventFree(pEvent); 304872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes pEvent = pNextEvent; 305872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 306872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 307f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes event_list_ = NULL; 308872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes} 309872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 310872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes/* 311872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Allocate a JdwpEvent struct with enough space to hold the specified 312872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * number of mod records. 313872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 314872d4ec7225444d9400d30f9027247deb91012fdElliott HughesJdwpEvent* EventAlloc(int numMods) { 315872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes JdwpEvent* newEvent; 316872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes int allocSize = offsetof(JdwpEvent, mods) + numMods * sizeof(newEvent->mods[0]); 317872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes newEvent = reinterpret_cast<JdwpEvent*>(malloc(allocSize)); 318872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes memset(newEvent, 0, allocSize); 319872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes return newEvent; 320872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes} 321872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 322872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes/* 323872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Free a JdwpEvent. 324872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * 325872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Do not call this until the event has been removed from the list. 326872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 327872d4ec7225444d9400d30f9027247deb91012fdElliott Hughesvoid EventFree(JdwpEvent* pEvent) { 328872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes if (pEvent == NULL) { 329872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes return; 330872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 331872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 332872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes /* make sure it was removed from the list */ 333872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes CHECK(pEvent->prev == NULL); 334872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes CHECK(pEvent->next == NULL); 335f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes /* want to check state->event_list_ != pEvent */ 336872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 337872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes /* 338872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Free any hairy bits in the mods. 339872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 340872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes for (int i = 0; i < pEvent->modCount; i++) { 341872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes if (pEvent->mods[i].modKind == MK_CLASS_MATCH) { 342872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes free(pEvent->mods[i].classMatch.classPattern); 343872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes pEvent->mods[i].classMatch.classPattern = NULL; 344872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 345872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes if (pEvent->mods[i].modKind == MK_CLASS_EXCLUDE) { 346872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes free(pEvent->mods[i].classExclude.classPattern); 347872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes pEvent->mods[i].classExclude.classPattern = NULL; 348872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 349872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 350872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 351872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes free(pEvent); 352872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes} 353872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 354872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes/* 355872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Allocate storage for matching events. To keep things simple we 356872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * use an array with enough storage for the entire list. 357872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * 358872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * The state->eventLock should be held before calling. 359872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 360761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughesstatic JdwpEvent** AllocMatchList(size_t event_count) { 361761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes return new JdwpEvent*[event_count]; 362872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes} 363872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 364872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes/* 365872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Run through the list and remove any entries with an expired "count" mod 366872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * from the event list, then free the match list. 367872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 368f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughesvoid JdwpState::CleanupMatchList(JdwpEvent** match_list, int match_count) { 369f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes JdwpEvent** ppEvent = match_list; 370872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 3712aa2e39548e194c5514d6534149ca1078021eab1Elliott Hughes while (match_count--) { 372872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes JdwpEvent* pEvent = *ppEvent; 373872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 374872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes for (int i = 0; i < pEvent->modCount; i++) { 375872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes if (pEvent->mods[i].modKind == MK_COUNT && pEvent->mods[i].count.count == 0) { 3764dd9b4d95eec9db5338fb9bf132f9bb8facf6cf4Elliott Hughes VLOG(jdwp) << "##### Removing expired event"; 377761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes UnregisterEvent(pEvent); 378872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes EventFree(pEvent); 379872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes break; 380872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 381872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 382872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 383872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes ppEvent++; 384872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 385872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 386f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes delete[] match_list; 387872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes} 388872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 389872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes/* 390872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Match a string against a "restricted regular expression", which is just 391872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * a string that may start or end with '*' (e.g. "*.Foo" or "java.*"). 392872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * 393872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * ("Restricted name globbing" might have been a better term.) 394872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 395761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughesstatic bool PatternMatch(const char* pattern, const std::string& target) { 396a215526d5c789cbef0f81a1f9aba22541a841ccaElliott Hughes size_t patLen = strlen(pattern); 397872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes if (pattern[0] == '*') { 398872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes patLen--; 399a215526d5c789cbef0f81a1f9aba22541a841ccaElliott Hughes if (target.size() < patLen) { 400872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes return false; 401872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 402a215526d5c789cbef0f81a1f9aba22541a841ccaElliott Hughes return strcmp(pattern+1, target.c_str() + (target.size()-patLen)) == 0; 403872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } else if (pattern[patLen-1] == '*') { 404a215526d5c789cbef0f81a1f9aba22541a841ccaElliott Hughes return strncmp(pattern, target.c_str(), patLen-1) == 0; 405872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } else { 406a215526d5c789cbef0f81a1f9aba22541a841ccaElliott Hughes return strcmp(pattern, target.c_str()) == 0; 407872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 408872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes} 409872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 410872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes/* 411872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * See if the event's mods match up with the contents of "basket". 412872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * 413872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * If we find a Count mod before rejecting an event, we decrement it. We 414872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * need to do this even if later mods cause us to ignore the event. 415872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 41600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogersstatic bool ModsMatch(JdwpEvent* pEvent, ModBasket* basket) 417b726dcb581bf72da46527378ccb6889020f0e6e9Ian Rogers SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 418872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes JdwpEventMod* pMod = pEvent->mods; 419872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 420872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes for (int i = pEvent->modCount; i > 0; i--, pMod++) { 421872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes switch (pMod->modKind) { 422872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes case MK_COUNT: 423872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes CHECK_GT(pMod->count.count, 0); 424872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes pMod->count.count--; 425872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes break; 426872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes case MK_CONDITIONAL: 427872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes CHECK(false); // should not be getting these 428872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes break; 429872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes case MK_THREAD_ONLY: 430872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes if (pMod->threadOnly.threadId != basket->threadId) { 431872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes return false; 432872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 433872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes break; 434872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes case MK_CLASS_ONLY: 435872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes if (!Dbg::MatchType(basket->classId, pMod->classOnly.refTypeId)) { 436872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes return false; 437872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 438872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes break; 439872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes case MK_CLASS_MATCH: 440761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes if (!PatternMatch(pMod->classMatch.classPattern, basket->className)) { 441872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes return false; 442872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 443872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes break; 444872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes case MK_CLASS_EXCLUDE: 445761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes if (PatternMatch(pMod->classMatch.classPattern, basket->className)) { 446872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes return false; 447872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 448872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes break; 449872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes case MK_LOCATION_ONLY: 4502aa2e39548e194c5514d6534149ca1078021eab1Elliott Hughes if (pMod->locationOnly.loc != *basket->pLoc) { 451872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes return false; 452872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 453872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes break; 454872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes case MK_EXCEPTION_ONLY: 455872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes if (pMod->exceptionOnly.refTypeId != 0 && !Dbg::MatchType(basket->excepClassId, pMod->exceptionOnly.refTypeId)) { 456872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes return false; 457872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 458872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes if ((basket->caught && !pMod->exceptionOnly.caught) || (!basket->caught && !pMod->exceptionOnly.uncaught)) { 459872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes return false; 460872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 461872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes break; 462872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes case MK_FIELD_ONLY: 463872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes if (!Dbg::MatchType(basket->classId, pMod->fieldOnly.refTypeId) || pMod->fieldOnly.fieldId != basket->field) { 464872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes return false; 465872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 466872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes break; 467872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes case MK_STEP: 468872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes if (pMod->step.threadId != basket->threadId) { 469872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes return false; 470872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 471872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes break; 472872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes case MK_INSTANCE_ONLY: 473872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes if (pMod->instanceOnly.objectId != basket->thisPtr) { 474872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes return false; 475872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 476872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes break; 477872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes default: 4787b3cdfcca472b779cf8745fb8460935e56229f11Elliott Hughes LOG(FATAL) << "unknown mod kind " << pMod->modKind; 479872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes break; 480872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 481872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 482872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes return true; 483872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes} 484872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 485872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes/* 486872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Find all events of type "eventKind" with mods that match up with the 487872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * rest of the arguments. 488872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * 489f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes * Found events are appended to "match_list", and "*pMatchCount" is advanced, 490872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * so this may be called multiple times for grouped events. 491872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * 492872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * DO NOT call this multiple times for the same eventKind, as Count mods are 493872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * decremented during the scan. 494872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 49500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogersvoid JdwpState::FindMatchingEvents(JdwpEventKind eventKind, ModBasket* basket, 49600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers JdwpEvent** match_list, int* pMatchCount) { 497872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes /* start after the existing entries */ 498f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes match_list += *pMatchCount; 499872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 500f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes JdwpEvent* pEvent = event_list_; 501872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes while (pEvent != NULL) { 502761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes if (pEvent->eventKind == eventKind && ModsMatch(pEvent, basket)) { 503f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes *match_list++ = pEvent; 504872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes (*pMatchCount)++; 505872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 506872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 507872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes pEvent = pEvent->next; 508872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 509872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes} 510872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 511872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes/* 512872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Scan through the list of matches and determine the most severe 513872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * suspension policy. 514872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 515f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughesstatic JdwpSuspendPolicy scanSuspendPolicy(JdwpEvent** match_list, int match_count) { 516872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes JdwpSuspendPolicy policy = SP_NONE; 517872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 5182aa2e39548e194c5514d6534149ca1078021eab1Elliott Hughes while (match_count--) { 519f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes if ((*match_list)->suspend_policy > policy) { 520f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes policy = (*match_list)->suspend_policy; 521872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 522f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes match_list++; 523872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 524872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 525872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes return policy; 526872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes} 527872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 528872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes/* 529872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Three possibilities: 530872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * SP_NONE - do nothing 531872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * SP_EVENT_THREAD - suspend ourselves 532872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * SP_ALL - suspend everybody except JDWP support thread 533872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 53400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogersvoid JdwpState::SuspendByPolicy(JdwpSuspendPolicy suspend_policy, JDWP::ObjectId thread_self_id) { 535f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes VLOG(jdwp) << "SuspendByPolicy(" << suspend_policy << ")"; 536f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes if (suspend_policy == SP_NONE) { 537872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes return; 538872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 539872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 540f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes if (suspend_policy == SP_ALL) { 541475fc23a4a7f35d1be87ea0b06c80df317a720acElliott Hughes Dbg::SuspendVM(); 542872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } else { 543f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes CHECK_EQ(suspend_policy, SP_EVENT_THREAD); 544872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 545872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 546872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes /* this is rare but possible -- see CLASS_PREPARE handling */ 54700f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers if (thread_self_id == debug_thread_id_) { 548761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes LOG(INFO) << "NOTE: SuspendByPolicy not suspending JDWP thread"; 549872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes return; 550872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 551872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 552872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes DebugInvokeReq* pReq = Dbg::GetInvokeReq(); 553872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes while (true) { 554872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes pReq->ready = true; 555872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes Dbg::SuspendSelf(); 556872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes pReq->ready = false; 557872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 558872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes /* 559872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * The JDWP thread has told us (and possibly all other threads) to 560872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * resume. See if it has left anything in our DebugInvokeReq mailbox. 561872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 562d38667a055d507492fd05f78519a7e1f0b85ea03Sebastien Hertz if (!pReq->invoke_needed) { 563761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes /*LOGD("SuspendByPolicy: no invoke needed");*/ 564872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes break; 565872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 566872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 567872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes /* grab this before posting/suspending again */ 56800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers SetWaitForEventThread(thread_self_id); 569872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 570d07986fad0d08cdf05505cf9230714a2cf0dd9aeElliott Hughes /* leave pReq->invoke_needed_ raised so we can check reentrancy */ 571872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes Dbg::ExecuteMethod(pReq); 572872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 573475fc23a4a7f35d1be87ea0b06c80df317a720acElliott Hughes pReq->error = ERR_NONE; 574872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 575872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes} 576872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 57700f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogersvoid JdwpState::SendRequestAndPossiblySuspend(ExpandBuf* pReq, JdwpSuspendPolicy suspend_policy, 57800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers ObjectId threadId) { 57900f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers Thread* self = Thread::Current(); 58000f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers self->AssertThreadSuspensionIsAllowable(); 58100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers /* send request and possibly suspend ourselves */ 58200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers if (pReq != NULL) { 58300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers JDWP::ObjectId thread_self_id = Dbg::GetThreadSelfId(); 58400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers self->TransitionFromRunnableToSuspended(kWaitingForDebuggerSend); 58500f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers if (suspend_policy != SP_NONE) { 58600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers SetWaitForEventThread(threadId); 58700f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 58800f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers EventFinish(pReq); 58900f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers SuspendByPolicy(suspend_policy, thread_self_id); 59000f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers self->TransitionFromSuspendedToRunnable(); 59100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers } 59200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers} 59300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers 594872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes/* 595872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Determine if there is a method invocation in progress in the current 596872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * thread. 597872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * 598475fc23a4a7f35d1be87ea0b06c80df317a720acElliott Hughes * We look at the "invoke_needed" flag in the per-thread DebugInvokeReq 599872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * state. If set, we're in the process of invoking a method. 600872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 601761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughesbool JdwpState::InvokeInProgress() { 602872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes DebugInvokeReq* pReq = Dbg::GetInvokeReq(); 603d38667a055d507492fd05f78519a7e1f0b85ea03Sebastien Hertz return pReq->invoke_needed; 604872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes} 605872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 606872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes/* 607872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * We need the JDWP thread to hold off on doing stuff while we post an 608872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * event and then suspend ourselves. 609872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * 610872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Call this with a threadId of zero if you just want to wait for the 611872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * current thread operation to complete. 612872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * 613872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * This could go to sleep waiting for another thread, so it's important 614872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * that the thread be marked as VMWAIT before calling here. 615872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 616376a7a033d29d5f2b6e16574a340c999ff2999a0Elliott Hughesvoid JdwpState::SetWaitForEventThread(ObjectId threadId) { 617872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes bool waited = false; 618872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 619872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes /* this is held for very brief periods; contention is unlikely */ 62081d425b0b232962441616f8b14f73620bffef5e5Ian Rogers Thread* self = Thread::Current(); 62181d425b0b232962441616f8b14f73620bffef5e5Ian Rogers MutexLock mu(self, event_thread_lock_); 622872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 623872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes /* 624872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * If another thread is already doing stuff, wait for it. This can 625872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * go to sleep indefinitely. 626872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 627a21039c3ae2b20e44ceb2735251c04d0aac89afdElliott Hughes while (event_thread_id_ != 0) { 628d9e4e0c8606f8b87e0a48aab68125dbee543bf88Ian Rogers VLOG(jdwp) << StringPrintf("event in progress (%#" PRIx64 "), %#" PRIx64 " sleeping", 629d9e4e0c8606f8b87e0a48aab68125dbee543bf88Ian Rogers event_thread_id_, threadId); 630872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes waited = true; 631c604d731730b43231f63040c8db1d58304da0cf3Ian Rogers event_thread_cond_.Wait(self); 632872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 633872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 634872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes if (waited || threadId != 0) { 635d9e4e0c8606f8b87e0a48aab68125dbee543bf88Ian Rogers VLOG(jdwp) << StringPrintf("event token grabbed (%#" PRIx64 ")", threadId); 636872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 637872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes if (threadId != 0) { 638a21039c3ae2b20e44ceb2735251c04d0aac89afdElliott Hughes event_thread_id_ = threadId; 639872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 640872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes} 641872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 642872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes/* 643872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Clear the threadId and signal anybody waiting. 644872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 645376a7a033d29d5f2b6e16574a340c999ff2999a0Elliott Hughesvoid JdwpState::ClearWaitForEventThread() { 646872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes /* 647872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Grab the mutex. Don't try to go in/out of VMWAIT mode, as this 648872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * function is called by dvmSuspendSelf(), and the transition back 649872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * to RUNNING would confuse it. 650872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 651c604d731730b43231f63040c8db1d58304da0cf3Ian Rogers Thread* self = Thread::Current(); 652c604d731730b43231f63040c8db1d58304da0cf3Ian Rogers MutexLock mu(self, event_thread_lock_); 653872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 654a21039c3ae2b20e44ceb2735251c04d0aac89afdElliott Hughes CHECK_NE(event_thread_id_, 0U); 655d9e4e0c8606f8b87e0a48aab68125dbee543bf88Ian Rogers VLOG(jdwp) << StringPrintf("cleared event token (%#" PRIx64 ")", event_thread_id_); 656872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 657a21039c3ae2b20e44ceb2735251c04d0aac89afdElliott Hughes event_thread_id_ = 0; 658872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 659c604d731730b43231f63040c8db1d58304da0cf3Ian Rogers event_thread_cond_.Signal(self); 660872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes} 661872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 662872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 663872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes/* 664872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Prep an event. Allocates storage for the message and leaves space for 665872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * the header. 666872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 667872d4ec7225444d9400d30f9027247deb91012fdElliott Hughesstatic ExpandBuf* eventPrep() { 668872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes ExpandBuf* pReq = expandBufAlloc(); 669872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes expandBufAddSpace(pReq, kJDWPHeaderLen); 670872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes return pReq; 671872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes} 672872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 673872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes/* 674872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Write the header into the buffer and send the packet off to the debugger. 675872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * 676872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Takes ownership of "pReq" (currently discards it). 677872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 678761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughesvoid JdwpState::EventFinish(ExpandBuf* pReq) { 679872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes uint8_t* buf = expandBufGetBuffer(pReq); 680872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 681f7c3b6625d710a8700325eea447f65e9f963b7f2Elliott Hughes Set4BE(buf, expandBufGetLength(pReq)); 682761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes Set4BE(buf+4, NextRequestSerial()); 683f7c3b6625d710a8700325eea447f65e9f963b7f2Elliott Hughes Set1(buf+8, 0); /* flags */ 684f7c3b6625d710a8700325eea447f65e9f963b7f2Elliott Hughes Set1(buf+9, kJdwpEventCommandSet); 685f7c3b6625d710a8700325eea447f65e9f963b7f2Elliott Hughes Set1(buf+10, kJdwpCompositeCommand); 686872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 68799660e1c3d6117cfb8bac25b1a0413833ab15b2aSebastien Hertz // Prevents from interleaving commands and events. Otherwise we could end up in sending an event 68899660e1c3d6117cfb8bac25b1a0413833ab15b2aSebastien Hertz // before sending the reply of the command being processed and would lead to bad synchronization 68999660e1c3d6117cfb8bac25b1a0413833ab15b2aSebastien Hertz // between the debugger and the debuggee. 69099660e1c3d6117cfb8bac25b1a0413833ab15b2aSebastien Hertz WaitForProcessingRequest(); 69199660e1c3d6117cfb8bac25b1a0413833ab15b2aSebastien Hertz 692761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes SendRequest(pReq); 693872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 694872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes expandBufFree(pReq); 695872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes} 696872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 697872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 698872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes/* 699872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Tell the debugger that we have finished initializing. This is always 700872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * sent, even if the debugger hasn't requested it. 701872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * 702872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * This should be sent "before the main thread is started and before 703872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * any application code has been executed". The thread ID in the message 704872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * must be for the main thread. 705872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 706376a7a033d29d5f2b6e16574a340c999ff2999a0Elliott Hughesbool JdwpState::PostVMStart() { 707f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes JdwpSuspendPolicy suspend_policy; 708872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes ObjectId threadId = Dbg::GetThreadSelfId(); 709872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 710376a7a033d29d5f2b6e16574a340c999ff2999a0Elliott Hughes if (options_->suspend) { 711f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes suspend_policy = SP_ALL; 712872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } else { 713f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes suspend_policy = SP_NONE; 714872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 715872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 716761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes ExpandBuf* pReq = eventPrep(); 717761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes { 7187934ac288acfb2552bb0b06ec1f61e5820d924a4Brian Carlstrom MutexLock mu(Thread::Current(), event_list_lock_); // probably don't need this here 719872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 7204dd9b4d95eec9db5338fb9bf132f9bb8facf6cf4Elliott Hughes VLOG(jdwp) << "EVENT: " << EK_VM_START; 721f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes VLOG(jdwp) << " suspend_policy=" << suspend_policy; 722872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 723f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes expandBufAdd1(pReq, suspend_policy); 724872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes expandBufAdd4BE(pReq, 1); 725872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 726872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes expandBufAdd1(pReq, EK_VM_START); 727872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes expandBufAdd4BE(pReq, 0); /* requestId */ 728872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes expandBufAdd8BE(pReq, threadId); 729872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 730872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 731138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz Dbg::ManageDeoptimization(); 732138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz 733872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes /* send request and possibly suspend ourselves */ 73400f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers SendRequestAndPossiblySuspend(pReq, suspend_policy, threadId); 735872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 736872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes return true; 737872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes} 738872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 739872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes/* 740872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * A location of interest has been reached. This handles: 741872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Breakpoint 742872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * SingleStep 743872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * MethodEntry 744872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * MethodExit 745872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * These four types must be grouped together in a single response. The 746872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * "eventFlags" indicates the type of event(s) that have happened. 747872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * 748872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Valid mods: 749872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Count, ThreadOnly, ClassOnly, ClassMatch, ClassExclude, InstanceOnly 750872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * LocationOnly (for breakpoint/step only) 751872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Step (for step only) 752872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * 753872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Interesting test cases: 754872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * - Put a breakpoint on a native method. Eclipse creates METHOD_ENTRY 755872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * and METHOD_EXIT events with a ClassOnly mod on the method's class. 756872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * - Use "run to line". Eclipse creates a BREAKPOINT with Count=1. 757872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * - Single-step to a line with a breakpoint. Should get a single 758872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * event message with both events in it. 759872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 760579b02416e05e32e535126e1ed61613a2cdb030eJeff Haobool JdwpState::PostLocationEvent(const JdwpLocation* pLoc, ObjectId thisPtr, int eventFlags, 761579b02416e05e32e535126e1ed61613a2cdb030eJeff Hao const JValue* returnValue) { 762872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes ModBasket basket; 763872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes basket.pLoc = pLoc; 764748474146da0c6484fa3dca0a700f612d47550c3Elliott Hughes basket.classId = pLoc->class_id; 765872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes basket.thisPtr = thisPtr; 766872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes basket.threadId = Dbg::GetThreadSelfId(); 767748474146da0c6484fa3dca0a700f612d47550c3Elliott Hughes basket.className = Dbg::GetClassName(pLoc->class_id); 768872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 769872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes /* 770872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * On rare occasions we may need to execute interpreted code in the VM 771872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * while handling a request from the debugger. Don't fire breakpoints 772872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * while doing so. (I don't think we currently do this at all, so 773872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * this is mostly paranoia.) 774872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 775a21039c3ae2b20e44ceb2735251c04d0aac89afdElliott Hughes if (basket.threadId == debug_thread_id_) { 7764dd9b4d95eec9db5338fb9bf132f9bb8facf6cf4Elliott Hughes VLOG(jdwp) << "Ignoring location event in JDWP thread"; 777872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes return false; 778872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 779872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 780872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes /* 781872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * The debugger variable display tab may invoke the interpreter to format 782872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * complex objects. We want to ignore breakpoints and method entry/exit 783872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * traps while working on behalf of the debugger. 784872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * 785872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * If we don't ignore them, the VM will get hung up, because we'll 786872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * suspend on a breakpoint while the debugger is still waiting for its 787872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * method invocation to complete. 788872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 789761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes if (InvokeInProgress()) { 7904dd9b4d95eec9db5338fb9bf132f9bb8facf6cf4Elliott Hughes VLOG(jdwp) << "Not checking breakpoints during invoke (" << basket.className << ")"; 791872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes return false; 792872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 793872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 7942aa2e39548e194c5514d6534149ca1078021eab1Elliott Hughes int match_count = 0; 795872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes ExpandBuf* pReq = NULL; 796f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes JdwpSuspendPolicy suspend_policy = SP_NONE; 797761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes { 79850b35e2fd1a68cd1240e4a9d9f363e11764957d1Ian Rogers MutexLock mu(Thread::Current(), event_list_lock_); 799138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz JdwpEvent** match_list = AllocMatchList(event_list_size_); 8008696433d1b3d8ba15288483b777edd888de69135Elliott Hughes if ((eventFlags & Dbg::kBreakpoint) != 0) { 801f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes FindMatchingEvents(EK_BREAKPOINT, &basket, match_list, &match_count); 802761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes } 803761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes if ((eventFlags & Dbg::kSingleStep) != 0) { 804f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes FindMatchingEvents(EK_SINGLE_STEP, &basket, match_list, &match_count); 805761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes } 806761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes if ((eventFlags & Dbg::kMethodEntry) != 0) { 807f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes FindMatchingEvents(EK_METHOD_ENTRY, &basket, match_list, &match_count); 808761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes } 809761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes if ((eventFlags & Dbg::kMethodExit) != 0) { 810f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes FindMatchingEvents(EK_METHOD_EXIT, &basket, match_list, &match_count); 811579b02416e05e32e535126e1ed61613a2cdb030eJeff Hao FindMatchingEvents(EK_METHOD_EXIT_WITH_RETURN_VALUE, &basket, match_list, &match_count); 812761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes } 8132aa2e39548e194c5514d6534149ca1078021eab1Elliott Hughes if (match_count != 0) { 814f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes VLOG(jdwp) << "EVENT: " << match_list[0]->eventKind << "(" << match_count << " total) " 815a96836a4115ad08762567c10bd4d198c5b644985Elliott Hughes << basket.className << "." << Dbg::GetMethodName(pLoc->method_id) 816d9e4e0c8606f8b87e0a48aab68125dbee543bf88Ian Rogers << StringPrintf(" thread=%#" PRIx64 " dex_pc=%#" PRIx64 ")", 817d9e4e0c8606f8b87e0a48aab68125dbee543bf88Ian Rogers basket.threadId, pLoc->dex_pc); 818872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 819f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes suspend_policy = scanSuspendPolicy(match_list, match_count); 820f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes VLOG(jdwp) << " suspend_policy=" << suspend_policy; 821872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 822761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes pReq = eventPrep(); 823f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes expandBufAdd1(pReq, suspend_policy); 8242aa2e39548e194c5514d6534149ca1078021eab1Elliott Hughes expandBufAdd4BE(pReq, match_count); 825761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes 8262aa2e39548e194c5514d6534149ca1078021eab1Elliott Hughes for (int i = 0; i < match_count; i++) { 827f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes expandBufAdd1(pReq, match_list[i]->eventKind); 828f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes expandBufAdd4BE(pReq, match_list[i]->requestId); 829761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes expandBufAdd8BE(pReq, basket.threadId); 8306e9d22c78c1016e70f8c2a9e6bc66c94ec36f728Elliott Hughes expandBufAddLocation(pReq, *pLoc); 831579b02416e05e32e535126e1ed61613a2cdb030eJeff Hao if (match_list[i]->eventKind == EK_METHOD_EXIT_WITH_RETURN_VALUE) { 832579b02416e05e32e535126e1ed61613a2cdb030eJeff Hao Dbg::OutputMethodReturnValue(pLoc->method_id, returnValue, pReq); 833579b02416e05e32e535126e1ed61613a2cdb030eJeff Hao } 834761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes } 835872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 836872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 837f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes CleanupMatchList(match_list, match_count); 838761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes } 839872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 840138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz Dbg::ManageDeoptimization(); 841138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz 84200f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers SendRequestAndPossiblySuspend(pReq, suspend_policy, basket.threadId); 8432aa2e39548e194c5514d6534149ca1078021eab1Elliott Hughes return match_count != 0; 844872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes} 845872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 846872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes/* 847872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * A thread is starting or stopping. 848872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * 849872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Valid mods: 850872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Count, ThreadOnly 851872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 852234ab15b00f8120282d1833e5d7480eca2e35a29Elliott Hughesbool JdwpState::PostThreadChange(ObjectId threadId, bool start) { 853872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes CHECK_EQ(threadId, Dbg::GetThreadSelfId()); 854872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 855872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes /* 856872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * I don't think this can happen. 857872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 858761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes if (InvokeInProgress()) { 859872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes LOG(WARNING) << "Not posting thread change during invoke"; 860872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes return false; 861872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 862872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 863872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes ModBasket basket; 864872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes basket.threadId = threadId; 865872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 866872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes ExpandBuf* pReq = NULL; 867f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes JdwpSuspendPolicy suspend_policy = SP_NONE; 8682aa2e39548e194c5514d6534149ca1078021eab1Elliott Hughes int match_count = 0; 869234ab15b00f8120282d1833e5d7480eca2e35a29Elliott Hughes { 870234ab15b00f8120282d1833e5d7480eca2e35a29Elliott Hughes // Don't allow the list to be updated while we scan it. 87150b35e2fd1a68cd1240e4a9d9f363e11764957d1Ian Rogers MutexLock mu(Thread::Current(), event_list_lock_); 872f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes JdwpEvent** match_list = AllocMatchList(event_list_size_); 873234ab15b00f8120282d1833e5d7480eca2e35a29Elliott Hughes 874234ab15b00f8120282d1833e5d7480eca2e35a29Elliott Hughes if (start) { 875f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes FindMatchingEvents(EK_THREAD_START, &basket, match_list, &match_count); 876234ab15b00f8120282d1833e5d7480eca2e35a29Elliott Hughes } else { 877f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes FindMatchingEvents(EK_THREAD_DEATH, &basket, match_list, &match_count); 878234ab15b00f8120282d1833e5d7480eca2e35a29Elliott Hughes } 879872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 8802aa2e39548e194c5514d6534149ca1078021eab1Elliott Hughes if (match_count != 0) { 881f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes VLOG(jdwp) << "EVENT: " << match_list[0]->eventKind << "(" << match_count << " total) " 882d9e4e0c8606f8b87e0a48aab68125dbee543bf88Ian Rogers << StringPrintf("thread=%#" PRIx64, basket.threadId) << ")"; 883872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 884f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes suspend_policy = scanSuspendPolicy(match_list, match_count); 885f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes VLOG(jdwp) << " suspend_policy=" << suspend_policy; 886872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 887234ab15b00f8120282d1833e5d7480eca2e35a29Elliott Hughes pReq = eventPrep(); 888f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes expandBufAdd1(pReq, suspend_policy); 8892aa2e39548e194c5514d6534149ca1078021eab1Elliott Hughes expandBufAdd4BE(pReq, match_count); 890234ab15b00f8120282d1833e5d7480eca2e35a29Elliott Hughes 8912aa2e39548e194c5514d6534149ca1078021eab1Elliott Hughes for (int i = 0; i < match_count; i++) { 892f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes expandBufAdd1(pReq, match_list[i]->eventKind); 893f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes expandBufAdd4BE(pReq, match_list[i]->requestId); 894234ab15b00f8120282d1833e5d7480eca2e35a29Elliott Hughes expandBufAdd8BE(pReq, basket.threadId); 895234ab15b00f8120282d1833e5d7480eca2e35a29Elliott Hughes } 896872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 897872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 898f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes CleanupMatchList(match_list, match_count); 899234ab15b00f8120282d1833e5d7480eca2e35a29Elliott Hughes } 900872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 901138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz Dbg::ManageDeoptimization(); 902138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz 90300f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers SendRequestAndPossiblySuspend(pReq, suspend_policy, basket.threadId); 904872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 9052aa2e39548e194c5514d6534149ca1078021eab1Elliott Hughes return match_count != 0; 906872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes} 907872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 908872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes/* 909872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Send a polite "VM is dying" message to the debugger. 910872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * 911872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Skips the usual "event token" stuff. 912872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 913376a7a033d29d5f2b6e16574a340c999ff2999a0Elliott Hughesbool JdwpState::PostVMDeath() { 9144dd9b4d95eec9db5338fb9bf132f9bb8facf6cf4Elliott Hughes VLOG(jdwp) << "EVENT: " << EK_VM_DEATH; 915872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 916872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes ExpandBuf* pReq = eventPrep(); 917872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes expandBufAdd1(pReq, SP_NONE); 918872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes expandBufAdd4BE(pReq, 1); 919872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 920872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes expandBufAdd1(pReq, EK_VM_DEATH); 921872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes expandBufAdd4BE(pReq, 0); 922761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes EventFinish(pReq); 923872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes return true; 924872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes} 925872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 926872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes/* 927872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * An exception has been thrown. It may or may not have been caught. 928872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * 929872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Valid mods: 930872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Count, ThreadOnly, ClassOnly, ClassMatch, ClassExclude, LocationOnly, 931872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * ExceptionOnly, InstanceOnly 932872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * 933872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * The "exceptionId" has not been added to the GC-visible object registry, 934872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * because there's a pretty good chance that we're not going to send it 935872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * up the debugger. 936872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 937761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughesbool JdwpState::PostException(const JdwpLocation* pThrowLoc, 938748474146da0c6484fa3dca0a700f612d47550c3Elliott Hughes ObjectId exceptionId, RefTypeId exceptionClassId, 939748474146da0c6484fa3dca0a700f612d47550c3Elliott Hughes const JdwpLocation* pCatchLoc, ObjectId thisPtr) { 940872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes ModBasket basket; 941872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 942872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes basket.pLoc = pThrowLoc; 943748474146da0c6484fa3dca0a700f612d47550c3Elliott Hughes basket.classId = pThrowLoc->class_id; 944872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes basket.threadId = Dbg::GetThreadSelfId(); 945c308a5d8c1993ff51be355531548e91409bdbd82Elliott Hughes basket.className = Dbg::GetClassName(basket.classId); 946872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes basket.excepClassId = exceptionClassId; 947748474146da0c6484fa3dca0a700f612d47550c3Elliott Hughes basket.caught = (pCatchLoc->class_id != 0); 948872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes basket.thisPtr = thisPtr; 949872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 950872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes /* don't try to post an exception caused by the debugger */ 951761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes if (InvokeInProgress()) { 9524dd9b4d95eec9db5338fb9bf132f9bb8facf6cf4Elliott Hughes VLOG(jdwp) << "Not posting exception hit during invoke (" << basket.className << ")"; 953872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes return false; 954872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 955872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 9562aa2e39548e194c5514d6534149ca1078021eab1Elliott Hughes int match_count = 0; 957872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes ExpandBuf* pReq = NULL; 958f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes JdwpSuspendPolicy suspend_policy = SP_NONE; 959761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes { 96050b35e2fd1a68cd1240e4a9d9f363e11764957d1Ian Rogers MutexLock mu(Thread::Current(), event_list_lock_); 961138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz JdwpEvent** match_list = AllocMatchList(event_list_size_); 962f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes FindMatchingEvents(EK_EXCEPTION, &basket, match_list, &match_count); 9632aa2e39548e194c5514d6534149ca1078021eab1Elliott Hughes if (match_count != 0) { 964f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes VLOG(jdwp) << "EVENT: " << match_list[0]->eventKind << "(" << match_count << " total)" 965d9e4e0c8606f8b87e0a48aab68125dbee543bf88Ian Rogers << StringPrintf(" thread=%#" PRIx64, basket.threadId) 966d9e4e0c8606f8b87e0a48aab68125dbee543bf88Ian Rogers << StringPrintf(" exceptId=%#" PRIx64, exceptionId) 967436e372e1c2b8e0bde47408e7407b4c3590f5071Elliott Hughes << " caught=" << basket.caught << ")" 968436e372e1c2b8e0bde47408e7407b4c3590f5071Elliott Hughes << " throw: " << *pThrowLoc; 969748474146da0c6484fa3dca0a700f612d47550c3Elliott Hughes if (pCatchLoc->class_id == 0) { 9704dd9b4d95eec9db5338fb9bf132f9bb8facf6cf4Elliott Hughes VLOG(jdwp) << " catch: (not caught)"; 971761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes } else { 9724dd9b4d95eec9db5338fb9bf132f9bb8facf6cf4Elliott Hughes VLOG(jdwp) << " catch: " << *pCatchLoc; 973761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes } 974872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 975f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes suspend_policy = scanSuspendPolicy(match_list, match_count); 976f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes VLOG(jdwp) << " suspend_policy=" << suspend_policy; 977872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 978761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes pReq = eventPrep(); 979f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes expandBufAdd1(pReq, suspend_policy); 9802aa2e39548e194c5514d6534149ca1078021eab1Elliott Hughes expandBufAdd4BE(pReq, match_count); 981761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes 9822aa2e39548e194c5514d6534149ca1078021eab1Elliott Hughes for (int i = 0; i < match_count; i++) { 983f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes expandBufAdd1(pReq, match_list[i]->eventKind); 984f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes expandBufAdd4BE(pReq, match_list[i]->requestId); 985761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes expandBufAdd8BE(pReq, basket.threadId); 986872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 9876e9d22c78c1016e70f8c2a9e6bc66c94ec36f728Elliott Hughes expandBufAddLocation(pReq, *pThrowLoc); 988761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes expandBufAdd1(pReq, JT_OBJECT); 989761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes expandBufAdd8BE(pReq, exceptionId); 9906e9d22c78c1016e70f8c2a9e6bc66c94ec36f728Elliott Hughes expandBufAddLocation(pReq, *pCatchLoc); 991761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes } 992872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 993872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 994f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes CleanupMatchList(match_list, match_count); 995872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 996872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 997138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz Dbg::ManageDeoptimization(); 998138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz 99900f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers SendRequestAndPossiblySuspend(pReq, suspend_policy, basket.threadId); 1000872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 10012aa2e39548e194c5514d6534149ca1078021eab1Elliott Hughes return match_count != 0; 1002872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes} 1003872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 1004872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes/* 1005872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Announce that a class has been loaded. 1006872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * 1007872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Valid mods: 1008872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Count, ThreadOnly, ClassOnly, ClassMatch, ClassExclude 1009872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 101000f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogersbool JdwpState::PostClassPrepare(JdwpTypeTag tag, RefTypeId refTypeId, const std::string& signature, 101100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers int status) { 1012872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes ModBasket basket; 1013872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 1014872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes basket.classId = refTypeId; 1015872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes basket.threadId = Dbg::GetThreadSelfId(); 1016c308a5d8c1993ff51be355531548e91409bdbd82Elliott Hughes basket.className = Dbg::GetClassName(basket.classId); 1017872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 1018872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes /* suppress class prep caused by debugger */ 1019761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes if (InvokeInProgress()) { 10204dd9b4d95eec9db5338fb9bf132f9bb8facf6cf4Elliott Hughes VLOG(jdwp) << "Not posting class prep caused by invoke (" << basket.className << ")"; 1021872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes return false; 1022872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 1023872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 1024872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes ExpandBuf* pReq = NULL; 1025f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes JdwpSuspendPolicy suspend_policy = SP_NONE; 1026f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes int match_count = 0; 1027761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes { 102850b35e2fd1a68cd1240e4a9d9f363e11764957d1Ian Rogers MutexLock mu(Thread::Current(), event_list_lock_); 1029f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes JdwpEvent** match_list = AllocMatchList(event_list_size_); 1030f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes FindMatchingEvents(EK_CLASS_PREPARE, &basket, match_list, &match_count); 10312aa2e39548e194c5514d6534149ca1078021eab1Elliott Hughes if (match_count != 0) { 1032f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes VLOG(jdwp) << "EVENT: " << match_list[0]->eventKind << "(" << match_count << " total) " 1033d9e4e0c8606f8b87e0a48aab68125dbee543bf88Ian Rogers << StringPrintf("thread=%#" PRIx64, basket.threadId) << ") " << signature; 1034872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 1035f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes suspend_policy = scanSuspendPolicy(match_list, match_count); 1036f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes VLOG(jdwp) << " suspend_policy=" << suspend_policy; 1037872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 1038a21039c3ae2b20e44ceb2735251c04d0aac89afdElliott Hughes if (basket.threadId == debug_thread_id_) { 1039761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes /* 1040761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes * JDWP says that, for a class prep in the debugger thread, we 1041761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes * should set threadId to null and if any threads were supposed 1042761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes * to be suspended then we suspend all other threads. 1043761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes */ 10444dd9b4d95eec9db5338fb9bf132f9bb8facf6cf4Elliott Hughes VLOG(jdwp) << " NOTE: class prepare in debugger thread!"; 1045761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes basket.threadId = 0; 1046f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes if (suspend_policy == SP_EVENT_THREAD) { 1047f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes suspend_policy = SP_ALL; 1048761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes } 1049872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 1050872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 1051761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes pReq = eventPrep(); 1052f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes expandBufAdd1(pReq, suspend_policy); 10532aa2e39548e194c5514d6534149ca1078021eab1Elliott Hughes expandBufAdd4BE(pReq, match_count); 1054872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 10552aa2e39548e194c5514d6534149ca1078021eab1Elliott Hughes for (int i = 0; i < match_count; i++) { 1056f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes expandBufAdd1(pReq, match_list[i]->eventKind); 1057f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes expandBufAdd4BE(pReq, match_list[i]->requestId); 1058761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes expandBufAdd8BE(pReq, basket.threadId); 1059872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 1060761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes expandBufAdd1(pReq, tag); 1061761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes expandBufAdd8BE(pReq, refTypeId); 1062761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes expandBufAddUtf8String(pReq, signature); 1063761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes expandBufAdd4BE(pReq, status); 1064761928d24e4e7ed7776b52243eaf9095ad35f448Elliott Hughes } 1065872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 1066f8349361a16a4e2796efe9f3586b994e8d4834e4Elliott Hughes CleanupMatchList(match_list, match_count); 1067872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 1068872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 1069138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz Dbg::ManageDeoptimization(); 1070138dbfc3336e379d74d157086f69a0fbe830089bSebastien Hertz 107100f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers SendRequestAndPossiblySuspend(pReq, suspend_policy, basket.threadId); 1072872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 10732aa2e39548e194c5514d6534149ca1078021eab1Elliott Hughes return match_count != 0; 1074872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes} 1075872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 1076872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes/* 1077872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * Send up a chunk of DDM data. 1078872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * 1079872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * While this takes the form of a JDWP "event", it doesn't interact with 1080872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * other debugger traffic, and can't suspend the VM, so we skip all of 1081872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * the fun event token gymnastics. 1082872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 1083cccd84f1f972f1a260c3be418c8388a5d30cf59eElliott Hughesvoid JdwpState::DdmSendChunkV(uint32_t type, const iovec* iov, int iov_count) { 1084872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes uint8_t header[kJDWPHeaderLen + 8]; 1085872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes size_t dataLen = 0; 1086872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 1087872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes CHECK(iov != NULL); 1088cccd84f1f972f1a260c3be418c8388a5d30cf59eElliott Hughes CHECK_GT(iov_count, 0); 1089cccd84f1f972f1a260c3be418c8388a5d30cf59eElliott Hughes CHECK_LT(iov_count, 10); 1090872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 1091872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes /* 1092872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * "Wrap" the contents of the iovec with a JDWP/DDMS header. We do 1093872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes * this by creating a new copy of the vector with space for the header. 1094872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes */ 1095f52935278fca8c7aa220543eef4544e3d1105d91Brian Carlstrom std::vector<iovec> wrapiov; 1096f52935278fca8c7aa220543eef4544e3d1105d91Brian Carlstrom wrapiov.push_back(iovec()); 1097cccd84f1f972f1a260c3be418c8388a5d30cf59eElliott Hughes for (int i = 0; i < iov_count; i++) { 1098f52935278fca8c7aa220543eef4544e3d1105d91Brian Carlstrom wrapiov.push_back(iov[i]); 1099872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes dataLen += iov[i].iov_len; 1100872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes } 1101872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 1102872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes /* form the header (JDWP plus DDMS) */ 1103f7c3b6625d710a8700325eea447f65e9f963b7f2Elliott Hughes Set4BE(header, sizeof(header) + dataLen); 1104f7c3b6625d710a8700325eea447f65e9f963b7f2Elliott Hughes Set4BE(header+4, NextRequestSerial()); 1105f7c3b6625d710a8700325eea447f65e9f963b7f2Elliott Hughes Set1(header+8, 0); /* flags */ 1106f7c3b6625d710a8700325eea447f65e9f963b7f2Elliott Hughes Set1(header+9, kJDWPDdmCmdSet); 1107f7c3b6625d710a8700325eea447f65e9f963b7f2Elliott Hughes Set1(header+10, kJDWPDdmCmd); 1108f7c3b6625d710a8700325eea447f65e9f963b7f2Elliott Hughes Set4BE(header+11, type); 1109f7c3b6625d710a8700325eea447f65e9f963b7f2Elliott Hughes Set4BE(header+15, dataLen); 1110872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 1111872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes wrapiov[0].iov_base = header; 1112872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes wrapiov[0].iov_len = sizeof(header); 1113872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 111415bf2d34efa2218e287b584fb3653d268b9edc8dIan Rogers // Try to avoid blocking GC during a send, but only safe when not using mutexes at a lower-level 111515bf2d34efa2218e287b584fb3653d268b9edc8dIan Rogers // than mutator for lock ordering reasons. 111600f7d0eaa6bd93d33bf0c1429bf4ba0b3f28abacIan Rogers Thread* self = Thread::Current(); 111762d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers bool safe_to_release_mutator_lock_over_send = !Locks::mutator_lock_->IsExclusiveHeld(self); 111862d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers if (safe_to_release_mutator_lock_over_send) { 111938f85e4892f6504971bde994fec81fd61780ac30Brian Carlstrom for (size_t i = 0; i < kMutatorLock; ++i) { 112062d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers if (self->GetHeldMutex(static_cast<LockLevel>(i)) != NULL) { 112162d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers safe_to_release_mutator_lock_over_send = false; 112262d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers break; 112362d6c772205b8859f0ebf7ad105402ec4c3e2e01Ian Rogers } 112415bf2d34efa2218e287b584fb3653d268b9edc8dIan Rogers } 112515bf2d34efa2218e287b584fb3653d268b9edc8dIan Rogers } 112615bf2d34efa2218e287b584fb3653d268b9edc8dIan Rogers if (safe_to_release_mutator_lock_over_send) { 112715bf2d34efa2218e287b584fb3653d268b9edc8dIan Rogers // Change state to waiting to allow GC, ... while we're sending. 112815bf2d34efa2218e287b584fb3653d268b9edc8dIan Rogers self->TransitionFromRunnableToSuspended(kWaitingForDebuggerSend); 1129f52935278fca8c7aa220543eef4544e3d1105d91Brian Carlstrom SendBufferedRequest(type, wrapiov); 113015bf2d34efa2218e287b584fb3653d268b9edc8dIan Rogers self->TransitionFromSuspendedToRunnable(); 113115bf2d34efa2218e287b584fb3653d268b9edc8dIan Rogers } else { 113215bf2d34efa2218e287b584fb3653d268b9edc8dIan Rogers // Send and possibly block GC... 1133f52935278fca8c7aa220543eef4544e3d1105d91Brian Carlstrom SendBufferedRequest(type, wrapiov); 113415bf2d34efa2218e287b584fb3653d268b9edc8dIan Rogers } 1135872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes} 1136872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 1137872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes} // namespace JDWP 1138872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes 1139872d4ec7225444d9400d30f9027247deb91012fdElliott Hughes} // namespace art 1140