Compiler.cpp revision a8b91c52fd8a90b784835dfe1f8898035266c4dd
1ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng/* 2ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng * Copyright (C) 2009 The Android Open Source Project 3ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng * 4ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng * Licensed under the Apache License, Version 2.0 (the "License"); 5ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng * you may not use this file except in compliance with the License. 6ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng * You may obtain a copy of the License at 7ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng * 8ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng * http://www.apache.org/licenses/LICENSE-2.0 9ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng * 10ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng * Unless required by applicable law or agreed to in writing, software 11ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng * distributed under the License is distributed on an "AS IS" BASIS, 12ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng * See the License for the specific language governing permissions and 14ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng * limitations under the License. 15ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng */ 16ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 17ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng#include <sys/mman.h> 18ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng#include <errno.h> 197c4afdb7e96bb74909f111f08741aed261d191f8Ben Cheng#include <cutils/ashmem.h> 20ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 21ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng#include "Dalvik.h" 22ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng#include "interp/Jit.h" 23ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng#include "CompilerInternals.h" 24ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 255d5b94c8d14b166af580d5dd5906db4f9527d6caCarl Shapiroextern "C" void dvmCompilerTemplateStart(void); 265d5b94c8d14b166af580d5dd5906db4f9527d6caCarl Shapiroextern "C" void dmvCompilerTemplateEnd(void); 275d5b94c8d14b166af580d5dd5906db4f9527d6caCarl Shapiro 28ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Chengstatic inline bool workQueueLength(void) 29ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng{ 30ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng return gDvmJit.compilerQueueLength; 31ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng} 32ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 33ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Chengstatic CompilerWorkOrder workDequeue(void) 34ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng{ 35ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng assert(gDvmJit.compilerWorkQueue[gDvmJit.compilerWorkDequeueIndex].kind 36ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng != kWorkOrderInvalid); 37ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng CompilerWorkOrder work = 38ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng gDvmJit.compilerWorkQueue[gDvmJit.compilerWorkDequeueIndex]; 39ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng gDvmJit.compilerWorkQueue[gDvmJit.compilerWorkDequeueIndex++].kind = 40ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng kWorkOrderInvalid; 41ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng if (gDvmJit.compilerWorkDequeueIndex == COMPILER_WORK_QUEUE_SIZE) { 42ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng gDvmJit.compilerWorkDequeueIndex = 0; 43ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng } 44ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng gDvmJit.compilerQueueLength--; 45f9f33287693f9f9aa44318036b8aab627bd21a32Bill Buzbee if (gDvmJit.compilerQueueLength == 0) { 46b31b30131bbf58280a515c40027aa958b81b5cd6Carl Shapiro dvmSignalCond(&gDvmJit.compilerQueueEmpty); 47f9f33287693f9f9aa44318036b8aab627bd21a32Bill Buzbee } 48ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 49ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng /* Remember the high water mark of the queue length */ 50ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng if (gDvmJit.compilerQueueLength > gDvmJit.compilerMaxQueued) 51ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng gDvmJit.compilerMaxQueued = gDvmJit.compilerQueueLength; 52ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 53ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng return work; 54ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng} 55ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 561b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee/* 571b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee * Enqueue a work order - retrying until successful. If attempt to enqueue 581b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee * is repeatedly unsuccessful, assume the JIT is in a bad state and force a 591b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee * code cache reset. 601b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee */ 611b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee#define ENQUEUE_MAX_RETRIES 20 621b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbeevoid dvmCompilerForceWorkEnqueue(const u2 *pc, WorkOrderKind kind, void* info) 631b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee{ 641b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee bool success; 651b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee int retries = 0; 661b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee do { 671b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee success = dvmCompilerWorkEnqueue(pc, kind, info); 681b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee if (!success) { 691b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee retries++; 701b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee if (retries > ENQUEUE_MAX_RETRIES) { 711b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee LOGE("JIT: compiler queue wedged - forcing reset"); 721b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee gDvmJit.codeCacheFull = true; // Force reset 731b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee success = true; // Because we'll drop the order now anyway 741b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee } else { 751b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee dvmLockMutex(&gDvmJit.compilerLock); 761b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee pthread_cond_wait(&gDvmJit.compilerQueueActivity, 771b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee &gDvmJit.compilerLock); 781b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee dvmUnlockMutex(&gDvmJit.compilerLock); 791b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee 801b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee } 811b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee } 821b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee } while (!success); 831b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee} 841b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee 85964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee/* 86964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee * Attempt to enqueue a work order, returning true if successful. 871357e94efecd485bda933270a9181035f6a39e09Ben Cheng * 881357e94efecd485bda933270a9181035f6a39e09Ben Cheng * NOTE: Make sure that the caller frees the info pointer if the return value 891357e94efecd485bda933270a9181035f6a39e09Ben Cheng * is false. 90964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee */ 91ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Chengbool dvmCompilerWorkEnqueue(const u2 *pc, WorkOrderKind kind, void* info) 92ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng{ 93ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng int cc; 94ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng int i; 95ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng int numWork; 9660c24f436d603c564d5351a6f81821f12635733cBen Cheng bool result = true; 97ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 981b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee dvmLockMutex(&gDvmJit.compilerLock); 99ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 1007a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng /* 1016999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng * Return if queue or code cache is full. 1027a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng */ 1036999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng if (gDvmJit.compilerQueueLength == COMPILER_WORK_QUEUE_SIZE || 1046999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng gDvmJit.codeCacheFull == true) { 1055d5b94c8d14b166af580d5dd5906db4f9527d6caCarl Shapiro dvmUnlockMutex(&gDvmJit.compilerLock); 1065d5b94c8d14b166af580d5dd5906db4f9527d6caCarl Shapiro return false; 107ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng } 108ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 109ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng for (numWork = gDvmJit.compilerQueueLength, 110ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng i = gDvmJit.compilerWorkDequeueIndex; 111ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng numWork > 0; 112ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng numWork--) { 113ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng /* Already enqueued */ 1145d5b94c8d14b166af580d5dd5906db4f9527d6caCarl Shapiro if (gDvmJit.compilerWorkQueue[i++].pc == pc) { 1155d5b94c8d14b166af580d5dd5906db4f9527d6caCarl Shapiro dvmUnlockMutex(&gDvmJit.compilerLock); 1165d5b94c8d14b166af580d5dd5906db4f9527d6caCarl Shapiro return true; 1175d5b94c8d14b166af580d5dd5906db4f9527d6caCarl Shapiro } 118ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng /* Wrap around */ 119ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng if (i == COMPILER_WORK_QUEUE_SIZE) 120ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng i = 0; 121ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng } 122ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 123ccd6c0102d1f898aaea1c94761167fdd083b5275Ben Cheng CompilerWorkOrder *newOrder = 124ccd6c0102d1f898aaea1c94761167fdd083b5275Ben Cheng &gDvmJit.compilerWorkQueue[gDvmJit.compilerWorkEnqueueIndex]; 125ccd6c0102d1f898aaea1c94761167fdd083b5275Ben Cheng newOrder->pc = pc; 126ccd6c0102d1f898aaea1c94761167fdd083b5275Ben Cheng newOrder->kind = kind; 127ccd6c0102d1f898aaea1c94761167fdd083b5275Ben Cheng newOrder->info = info; 1287a2697d327936e20ef5484f7819e2e4bf91c891fBen Cheng newOrder->result.methodCompilationAborted = NULL; 129ccd6c0102d1f898aaea1c94761167fdd083b5275Ben Cheng newOrder->result.codeAddress = NULL; 130ccd6c0102d1f898aaea1c94761167fdd083b5275Ben Cheng newOrder->result.discardResult = 1311f74863d3e0f19930818398f375ebf1cf2d78969Bill Buzbee (kind == kWorkOrderTraceDebug) ? true : false; 13218fba346582c08d81aa96d9508c0e935bad5f36fbuzbee newOrder->result.cacheVersion = gDvmJit.cacheVersion; 13333672456e19bff9913b4a3459e6b8472f4c26c84Ben Cheng newOrder->result.requestingThread = dvmThreadSelf(); 13433672456e19bff9913b4a3459e6b8472f4c26c84Ben Cheng 135ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng gDvmJit.compilerWorkEnqueueIndex++; 136ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng if (gDvmJit.compilerWorkEnqueueIndex == COMPILER_WORK_QUEUE_SIZE) 137ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng gDvmJit.compilerWorkEnqueueIndex = 0; 138ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng gDvmJit.compilerQueueLength++; 139ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng cc = pthread_cond_signal(&gDvmJit.compilerQueueActivity); 140ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng assert(cc == 0); 141ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 142ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng dvmUnlockMutex(&gDvmJit.compilerLock); 14360c24f436d603c564d5351a6f81821f12635733cBen Cheng return result; 144ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng} 145ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 14611d8f14eef83d1b7bfa8f116de56a92d5ba9e71eBen Cheng/* Block until the queue length is 0, or there is a pending suspend request */ 147ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Chengvoid dvmCompilerDrainQueue(void) 148ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng{ 14911d8f14eef83d1b7bfa8f116de56a92d5ba9e71eBen Cheng Thread *self = dvmThreadSelf(); 15011d8f14eef83d1b7bfa8f116de56a92d5ba9e71eBen Cheng 151ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng dvmLockMutex(&gDvmJit.compilerLock); 15211d8f14eef83d1b7bfa8f116de56a92d5ba9e71eBen Cheng while (workQueueLength() != 0 && !gDvmJit.haltCompilerThread && 153389e258a5b9b2afb7bfaee3344c615d3310fae4ebuzbee self->suspendCount == 0) { 154812e6b1a6485e4468bc88fd69e9304817b8192ddBen Cheng /* 155812e6b1a6485e4468bc88fd69e9304817b8192ddBen Cheng * Use timed wait here - more than one mutator threads may be blocked 156812e6b1a6485e4468bc88fd69e9304817b8192ddBen Cheng * but the compiler thread will only signal once when the queue is 157812e6b1a6485e4468bc88fd69e9304817b8192ddBen Cheng * emptied. Furthermore, the compiler thread may have been shutdown 158812e6b1a6485e4468bc88fd69e9304817b8192ddBen Cheng * so the blocked thread may never get the wakeup signal. 159812e6b1a6485e4468bc88fd69e9304817b8192ddBen Cheng */ 160812e6b1a6485e4468bc88fd69e9304817b8192ddBen Cheng dvmRelativeCondWait(&gDvmJit.compilerQueueEmpty, &gDvmJit.compilerLock, 1000, 0); 161ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng } 162ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng dvmUnlockMutex(&gDvmJit.compilerLock); 163ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng} 164ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 16560c24f436d603c564d5351a6f81821f12635733cBen Chengbool dvmCompilerSetupCodeCache(void) 16660c24f436d603c564d5351a6f81821f12635733cBen Cheng{ 1677c4afdb7e96bb74909f111f08741aed261d191f8Ben Cheng int fd; 16860c24f436d603c564d5351a6f81821f12635733cBen Cheng 16960c24f436d603c564d5351a6f81821f12635733cBen Cheng /* Allocate the code cache */ 1707c4afdb7e96bb74909f111f08741aed261d191f8Ben Cheng fd = ashmem_create_region("dalvik-jit-code-cache", gDvmJit.codeCacheSize); 1717c4afdb7e96bb74909f111f08741aed261d191f8Ben Cheng if (fd < 0) { 1727c4afdb7e96bb74909f111f08741aed261d191f8Ben Cheng LOGE("Could not create %u-byte ashmem region for the JIT code cache", 1737c4afdb7e96bb74909f111f08741aed261d191f8Ben Cheng gDvmJit.codeCacheSize); 1747c4afdb7e96bb74909f111f08741aed261d191f8Ben Cheng return false; 1757c4afdb7e96bb74909f111f08741aed261d191f8Ben Cheng } 1767c4afdb7e96bb74909f111f08741aed261d191f8Ben Cheng gDvmJit.codeCache = mmap(NULL, gDvmJit.codeCacheSize, 1777c4afdb7e96bb74909f111f08741aed261d191f8Ben Cheng PROT_READ | PROT_WRITE | PROT_EXEC, 1787c4afdb7e96bb74909f111f08741aed261d191f8Ben Cheng MAP_PRIVATE , fd, 0); 1797c4afdb7e96bb74909f111f08741aed261d191f8Ben Cheng close(fd); 18060c24f436d603c564d5351a6f81821f12635733cBen Cheng if (gDvmJit.codeCache == MAP_FAILED) { 18160fc806b679a3655c228b4093058c59941a49cfeDan Bornstein LOGE("Failed to mmap the JIT code cache: %s", strerror(errno)); 18260c24f436d603c564d5351a6f81821f12635733cBen Cheng return false; 18360c24f436d603c564d5351a6f81821f12635733cBen Cheng } 18460c24f436d603c564d5351a6f81821f12635733cBen Cheng 185b88ec3cbb419b5eac23508dc6b73de2620d7521aBen Cheng gDvmJit.pageSizeMask = getpagesize() - 1; 186b88ec3cbb419b5eac23508dc6b73de2620d7521aBen Cheng 1877c4afdb7e96bb74909f111f08741aed261d191f8Ben Cheng /* This can be found through "dalvik-jit-code-cache" in /proc/<pid>/maps */ 1887c4afdb7e96bb74909f111f08741aed261d191f8Ben Cheng // LOGD("Code cache starts at %p", gDvmJit.codeCache); 1897a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng 19060c24f436d603c564d5351a6f81821f12635733cBen Cheng /* Copy the template code into the beginning of the code cache */ 19160c24f436d603c564d5351a6f81821f12635733cBen Cheng int templateSize = (intptr_t) dmvCompilerTemplateEnd - 19260c24f436d603c564d5351a6f81821f12635733cBen Cheng (intptr_t) dvmCompilerTemplateStart; 19360c24f436d603c564d5351a6f81821f12635733cBen Cheng memcpy((void *) gDvmJit.codeCache, 19460c24f436d603c564d5351a6f81821f12635733cBen Cheng (void *) dvmCompilerTemplateStart, 19560c24f436d603c564d5351a6f81821f12635733cBen Cheng templateSize); 19660c24f436d603c564d5351a6f81821f12635733cBen Cheng 19772621c9d3c175b0f9b239de5b0bcd83c7e5984e8Ben Cheng /* 19872621c9d3c175b0f9b239de5b0bcd83c7e5984e8Ben Cheng * Work around a CPU bug by keeping the 32-bit ARM handler code in its own 19972621c9d3c175b0f9b239de5b0bcd83c7e5984e8Ben Cheng * page. 20072621c9d3c175b0f9b239de5b0bcd83c7e5984e8Ben Cheng */ 20172621c9d3c175b0f9b239de5b0bcd83c7e5984e8Ben Cheng if (dvmCompilerInstructionSet() == DALVIK_JIT_THUMB2) { 20272621c9d3c175b0f9b239de5b0bcd83c7e5984e8Ben Cheng templateSize = (templateSize + 4095) & ~4095; 20372621c9d3c175b0f9b239de5b0bcd83c7e5984e8Ben Cheng } 20472621c9d3c175b0f9b239de5b0bcd83c7e5984e8Ben Cheng 20560c24f436d603c564d5351a6f81821f12635733cBen Cheng gDvmJit.templateSize = templateSize; 20660c24f436d603c564d5351a6f81821f12635733cBen Cheng gDvmJit.codeCacheByteUsed = templateSize; 20760c24f436d603c564d5351a6f81821f12635733cBen Cheng 20860c24f436d603c564d5351a6f81821f12635733cBen Cheng /* Only flush the part in the code cache that is being used now */ 20913fbc2e4bfa04cce8e181ac37d7f2b13a54aa037buzbee dvmCompilerCacheFlush((intptr_t) gDvmJit.codeCache, 21013fbc2e4bfa04cce8e181ac37d7f2b13a54aa037buzbee (intptr_t) gDvmJit.codeCache + templateSize, 0); 211b88ec3cbb419b5eac23508dc6b73de2620d7521aBen Cheng 2121f3da0b96578b9d9e4f9e38577d3365b7a49147bBen Cheng int result = mprotect(gDvmJit.codeCache, gDvmJit.codeCacheSize, 2131f3da0b96578b9d9e4f9e38577d3365b7a49147bBen Cheng PROTECT_CODE_CACHE_ATTRS); 2141f3da0b96578b9d9e4f9e38577d3365b7a49147bBen Cheng 2151f3da0b96578b9d9e4f9e38577d3365b7a49147bBen Cheng if (result == -1) { 2161f3da0b96578b9d9e4f9e38577d3365b7a49147bBen Cheng LOGE("Failed to remove the write permission for the code cache"); 2171f3da0b96578b9d9e4f9e38577d3365b7a49147bBen Cheng dvmAbort(); 2181f3da0b96578b9d9e4f9e38577d3365b7a49147bBen Cheng } 219b88ec3cbb419b5eac23508dc6b73de2620d7521aBen Cheng 22060c24f436d603c564d5351a6f81821f12635733cBen Cheng return true; 22160c24f436d603c564d5351a6f81821f12635733cBen Cheng} 22260c24f436d603c564d5351a6f81821f12635733cBen Cheng 2237a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Chengstatic void crawlDalvikStack(Thread *thread, bool print) 2247a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng{ 22530bc0d46ae730d78c42c39cfa56a59ba3025380bbuzbee void *fp = thread->interpSave.curFrame; 2267a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng StackSaveArea* saveArea = NULL; 2277a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng int stackLevel = 0; 2287a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng 2297a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng if (print) { 2307a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng LOGD("Crawling tid %d (%s / %p %s)", thread->systemTid, 2317a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng dvmGetThreadStatusStr(thread->status), 2327a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng thread->inJitCodeCache, 2337a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng thread->inJitCodeCache ? "jit" : "interp"); 2347a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng } 2357a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng /* Crawl the Dalvik stack frames to clear the returnAddr field */ 2367a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng while (fp != NULL) { 2377a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng saveArea = SAVEAREA_FROM_FP(fp); 2387a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng 2397a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng if (print) { 240fc75f3ed87b55d625b6054e18645da5cbdba31c6Carl Shapiro if (dvmIsBreakFrame((u4*)fp)) { 2417a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng LOGD(" #%d: break frame (%p)", 2427a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng stackLevel, saveArea->returnAddr); 2437a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng } 2447a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng else { 2457a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng LOGD(" #%d: %s.%s%s (%p)", 2467a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng stackLevel, 2477a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng saveArea->method->clazz->descriptor, 2487a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng saveArea->method->name, 2497a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng dvmIsNativeMethod(saveArea->method) ? 2507a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng " (native)" : "", 2517a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng saveArea->returnAddr); 2527a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng } 2537a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng } 2547a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng stackLevel++; 2557a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng saveArea->returnAddr = NULL; 2567a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng assert(fp != saveArea->prevFrame); 2577a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng fp = saveArea->prevFrame; 2587a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng } 2597a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng /* Make sure the stack is fully unwound to the bottom */ 2607a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng assert(saveArea == NULL || 2617a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng (u1 *) (saveArea+1) == thread->interpStackStart); 2627a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng} 2637a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng 26460c24f436d603c564d5351a6f81821f12635733cBen Chengstatic void resetCodeCache(void) 26560c24f436d603c564d5351a6f81821f12635733cBen Cheng{ 26660c24f436d603c564d5351a6f81821f12635733cBen Cheng Thread* thread; 2677a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng u8 startTime = dvmGetRelativeTimeUsec(); 2687a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng int inJit = 0; 2696999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng int byteUsed = gDvmJit.codeCacheByteUsed; 27060c24f436d603c564d5351a6f81821f12635733cBen Cheng 2715867bea193779ff3009738513bae9bc84f4a34aabuzbee /* If any thread is found stuck in the JIT state, don't reset the cache */ 2725867bea193779ff3009738513bae9bc84f4a34aabuzbee dvmLockThreadList(NULL); 27360c24f436d603c564d5351a6f81821f12635733cBen Cheng for (thread = gDvm.threadList; thread != NULL; thread = thread->next) { 2746999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng /* 2756999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng * Crawl the stack to wipe out the returnAddr field so that 2766999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng * 1) the soon-to-be-deleted code in the JIT cache won't be used 2776999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng * 2) or the thread stuck in the JIT land will soon return 2786999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng * to the interpreter land 2796999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng */ 2806999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng crawlDalvikStack(thread, false); 2817a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng if (thread->inJitCodeCache) { 2827a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng inJit++; 2837a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng } 2845867bea193779ff3009738513bae9bc84f4a34aabuzbee /* Cancel any ongoing trace selection */ 285cf2aac7e6a29e7e1e5f622fd6123e0d1a9a75bdabuzbee dvmDisableSubMode(thread, kSubModeJitTraceBuild); 2867a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng } 2875867bea193779ff3009738513bae9bc84f4a34aabuzbee dvmUnlockThreadList(); 28860c24f436d603c564d5351a6f81821f12635733cBen Cheng 2897a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng if (inJit) { 2906999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng LOGD("JIT code cache reset delayed (%d bytes %d/%d)", 2916999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng gDvmJit.codeCacheByteUsed, gDvmJit.numCodeCacheReset, 2926999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng ++gDvmJit.numCodeCacheResetDelayed); 2936999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng return; 2947a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng } 2957a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng 2966999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng /* Lock the mutex to clean up the work queue */ 2976999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng dvmLockMutex(&gDvmJit.compilerLock); 2986999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng 29918fba346582c08d81aa96d9508c0e935bad5f36fbuzbee /* Update the translation cache version */ 30018fba346582c08d81aa96d9508c0e935bad5f36fbuzbee gDvmJit.cacheVersion++; 30118fba346582c08d81aa96d9508c0e935bad5f36fbuzbee 3026999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng /* Drain the work queue to free the work orders */ 3037a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng while (workQueueLength()) { 3047a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng CompilerWorkOrder work = workDequeue(); 3057a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng free(work.info); 3067a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng } 3077a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng 30860c24f436d603c564d5351a6f81821f12635733cBen Cheng /* Reset the JitEntry table contents to the initial unpopulated state */ 30960c24f436d603c564d5351a6f81821f12635733cBen Cheng dvmJitResetTable(); 31060c24f436d603c564d5351a6f81821f12635733cBen Cheng 311b88ec3cbb419b5eac23508dc6b73de2620d7521aBen Cheng UNPROTECT_CODE_CACHE(gDvmJit.codeCache, gDvmJit.codeCacheByteUsed); 31260c24f436d603c564d5351a6f81821f12635733cBen Cheng /* 31360c24f436d603c564d5351a6f81821f12635733cBen Cheng * Wipe out the code cache content to force immediate crashes if 31460c24f436d603c564d5351a6f81821f12635733cBen Cheng * stale JIT'ed code is invoked. 31560c24f436d603c564d5351a6f81821f12635733cBen Cheng */ 316a8b91c52fd8a90b784835dfe1f8898035266c4ddRaghu Gandham dvmCompilerCacheClear((char *) gDvmJit.codeCache + gDvmJit.templateSize, 317a8b91c52fd8a90b784835dfe1f8898035266c4ddRaghu Gandham gDvmJit.codeCacheByteUsed - gDvmJit.templateSize); 318a8b91c52fd8a90b784835dfe1f8898035266c4ddRaghu Gandham 31913fbc2e4bfa04cce8e181ac37d7f2b13a54aa037buzbee dvmCompilerCacheFlush((intptr_t) gDvmJit.codeCache, 32013fbc2e4bfa04cce8e181ac37d7f2b13a54aa037buzbee (intptr_t) gDvmJit.codeCache + 32113fbc2e4bfa04cce8e181ac37d7f2b13a54aa037buzbee gDvmJit.codeCacheByteUsed, 0); 32260c24f436d603c564d5351a6f81821f12635733cBen Cheng 323b88ec3cbb419b5eac23508dc6b73de2620d7521aBen Cheng PROTECT_CODE_CACHE(gDvmJit.codeCache, gDvmJit.codeCacheByteUsed); 324b88ec3cbb419b5eac23508dc6b73de2620d7521aBen Cheng 32560c24f436d603c564d5351a6f81821f12635733cBen Cheng /* Reset the current mark of used bytes to the end of template code */ 32660c24f436d603c564d5351a6f81821f12635733cBen Cheng gDvmJit.codeCacheByteUsed = gDvmJit.templateSize; 32760c24f436d603c564d5351a6f81821f12635733cBen Cheng gDvmJit.numCompilations = 0; 32860c24f436d603c564d5351a6f81821f12635733cBen Cheng 32960c24f436d603c564d5351a6f81821f12635733cBen Cheng /* Reset the work queue */ 33060c24f436d603c564d5351a6f81821f12635733cBen Cheng memset(gDvmJit.compilerWorkQueue, 0, 33160c24f436d603c564d5351a6f81821f12635733cBen Cheng sizeof(CompilerWorkOrder) * COMPILER_WORK_QUEUE_SIZE); 33260c24f436d603c564d5351a6f81821f12635733cBen Cheng gDvmJit.compilerWorkEnqueueIndex = gDvmJit.compilerWorkDequeueIndex = 0; 33360c24f436d603c564d5351a6f81821f12635733cBen Cheng gDvmJit.compilerQueueLength = 0; 33460c24f436d603c564d5351a6f81821f12635733cBen Cheng 3356999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng /* Reset the IC patch work queue */ 3366999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng dvmLockMutex(&gDvmJit.compilerICPatchLock); 3376999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng gDvmJit.compilerICPatchIndex = 0; 3386999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng dvmUnlockMutex(&gDvmJit.compilerICPatchLock); 3396999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng 340385828e36ea70effe9aa18a954d008b1f7dc1d63Ben Cheng /* 341385828e36ea70effe9aa18a954d008b1f7dc1d63Ben Cheng * Reset the inflight compilation address (can only be done in safe points 342385828e36ea70effe9aa18a954d008b1f7dc1d63Ben Cheng * or by the compiler thread when its thread state is RUNNING). 343385828e36ea70effe9aa18a954d008b1f7dc1d63Ben Cheng */ 344385828e36ea70effe9aa18a954d008b1f7dc1d63Ben Cheng gDvmJit.inflightBaseAddr = NULL; 345385828e36ea70effe9aa18a954d008b1f7dc1d63Ben Cheng 34660c24f436d603c564d5351a6f81821f12635733cBen Cheng /* All clear now */ 34760c24f436d603c564d5351a6f81821f12635733cBen Cheng gDvmJit.codeCacheFull = false; 34860c24f436d603c564d5351a6f81821f12635733cBen Cheng 3496999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng dvmUnlockMutex(&gDvmJit.compilerLock); 3507a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng 3516999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng LOGD("JIT code cache reset in %lld ms (%d bytes %d/%d)", 3526999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng (dvmGetRelativeTimeUsec() - startTime) / 1000, 3536999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng byteUsed, ++gDvmJit.numCodeCacheReset, 3546999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng gDvmJit.numCodeCacheResetDelayed); 3556999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng} 3566999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng 3576999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng/* 3586999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng * Perform actions that are only safe when all threads are suspended. Currently 3596999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng * we do: 3606999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng * 1) Check if the code cache is full. If so reset it and restart populating it 3616999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng * from scratch. 3626999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng * 2) Patch predicted chaining cells by consuming recorded work orders. 3636999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng */ 3646999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Chengvoid dvmCompilerPerformSafePointChecks(void) 3656999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng{ 3666999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng if (gDvmJit.codeCacheFull) { 3676999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng resetCodeCache(); 3686999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng } 3696999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng dvmCompilerPatchInlineCache(); 37060c24f436d603c564d5351a6f81821f12635733cBen Cheng} 37160c24f436d603c564d5351a6f81821f12635733cBen Cheng 372953a0ed4e507fd6e756aa3e5c671bee80d7e9b3eAndy McFaddenstatic bool compilerThreadStartup(void) 373964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee{ 374964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee JitEntry *pJitTable = NULL; 375964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee unsigned char *pJitProfTable = NULL; 3762e152baec01433de9c63633ebc6f4adf1cea3a87buzbee JitTraceProfCounters *pJitTraceProfCounters = NULL; 377964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee unsigned int i; 378964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee 379964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee if (!dvmCompilerArchInit()) 380964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee goto fail; 381964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee 382964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee /* 383964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee * Setup the code cache if we have not inherited a valid code cache 384964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee * from the zygote. 385964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee */ 386964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee if (gDvmJit.codeCache == NULL) { 387964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee if (!dvmCompilerSetupCodeCache()) 388964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee goto fail; 389964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee } 390964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee 391964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee /* Allocate the initial arena block */ 392964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee if (dvmCompilerHeapInit() == false) { 393964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee goto fail; 394964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee } 395964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee 396385828e36ea70effe9aa18a954d008b1f7dc1d63Ben Cheng /* Cache the thread pointer */ 397385828e36ea70effe9aa18a954d008b1f7dc1d63Ben Cheng gDvmJit.compilerThread = dvmThreadSelf(); 398385828e36ea70effe9aa18a954d008b1f7dc1d63Ben Cheng 399964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee dvmLockMutex(&gDvmJit.compilerLock); 400964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee 401964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee /* Track method-level compilation statistics */ 402964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee gDvmJit.methodStatsTable = dvmHashTableCreate(32, NULL); 4037a2697d327936e20ef5484f7819e2e4bf91c891fBen Cheng 4047a2697d327936e20ef5484f7819e2e4bf91c891fBen Cheng#if defined(WITH_JIT_TUNING) 405452efba773098c070c6bd623124e1fed21342ba4Ben Cheng gDvm.verboseShutdown = true; 4061357e94efecd485bda933270a9181035f6a39e09Ben Cheng#endif 407964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee 408964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee dvmUnlockMutex(&gDvmJit.compilerLock); 409964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee 410964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee /* Set up the JitTable */ 411964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee 412964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee /* Power of 2? */ 413964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee assert(gDvmJit.jitTableSize && 414964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee !(gDvmJit.jitTableSize & (gDvmJit.jitTableSize - 1))); 415964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee 416964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee dvmInitMutex(&gDvmJit.tableLock); 417964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee dvmLockMutex(&gDvmJit.tableLock); 418964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee pJitTable = (JitEntry*) 419964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee calloc(gDvmJit.jitTableSize, sizeof(*pJitTable)); 420964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee if (!pJitTable) { 42160fc806b679a3655c228b4093058c59941a49cfeDan Bornstein LOGE("jit table allocation failed"); 422964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee dvmUnlockMutex(&gDvmJit.tableLock); 423964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee goto fail; 424964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee } 425964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee /* 426964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee * NOTE: the profile table must only be allocated once, globally. 427964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee * Profiling is turned on and off by nulling out gDvm.pJitProfTable 428964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee * and then restoring its original value. However, this action 4299a3147c7412f4794434b4c2604aa2ba784867774buzbee * is not synchronized for speed so threads may continue to hold 430964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee * and update the profile table after profiling has been turned 431964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee * off by null'ng the global pointer. Be aware. 432964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee */ 433964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee pJitProfTable = (unsigned char *)malloc(JIT_PROF_SIZE); 434964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee if (!pJitProfTable) { 43560fc806b679a3655c228b4093058c59941a49cfeDan Bornstein LOGE("jit prof table allocation failed"); 4360c32ebc544b8dd1528dc007090abda0be5f31174Carl Shapiro free(pJitProfTable); 437964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee dvmUnlockMutex(&gDvmJit.tableLock); 438964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee goto fail; 439964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee } 440964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee memset(pJitProfTable, gDvmJit.threshold, JIT_PROF_SIZE); 441964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee for (i=0; i < gDvmJit.jitTableSize; i++) { 442964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee pJitTable[i].u.info.chain = gDvmJit.jitTableSize; 443964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee } 444964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee /* Is chain field wide enough for termination pattern? */ 445964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee assert(pJitTable[0].u.info.chain == gDvmJit.jitTableSize); 446964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee 4472e152baec01433de9c63633ebc6f4adf1cea3a87buzbee /* Allocate the trace profiling structure */ 4482e152baec01433de9c63633ebc6f4adf1cea3a87buzbee pJitTraceProfCounters = (JitTraceProfCounters*) 4492e152baec01433de9c63633ebc6f4adf1cea3a87buzbee calloc(1, sizeof(*pJitTraceProfCounters)); 4502e152baec01433de9c63633ebc6f4adf1cea3a87buzbee if (!pJitTraceProfCounters) { 45160fc806b679a3655c228b4093058c59941a49cfeDan Bornstein LOGE("jit trace prof counters allocation failed"); 4522e152baec01433de9c63633ebc6f4adf1cea3a87buzbee dvmUnlockMutex(&gDvmJit.tableLock); 4532e152baec01433de9c63633ebc6f4adf1cea3a87buzbee goto fail; 4542e152baec01433de9c63633ebc6f4adf1cea3a87buzbee } 4552e152baec01433de9c63633ebc6f4adf1cea3a87buzbee 456964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee gDvmJit.pJitEntryTable = pJitTable; 457964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee gDvmJit.jitTableMask = gDvmJit.jitTableSize - 1; 458964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee gDvmJit.jitTableEntriesUsed = 0; 459964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee gDvmJit.compilerHighWater = 460964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee COMPILER_WORK_QUEUE_SIZE - (COMPILER_WORK_QUEUE_SIZE/4); 461a497359afa1abe4c5780c8799c6fe0edab551c2dBen Cheng /* 462a497359afa1abe4c5780c8799c6fe0edab551c2dBen Cheng * If the VM is launched with wait-on-the-debugger, we will need to hide 463a497359afa1abe4c5780c8799c6fe0edab551c2dBen Cheng * the profile table here 464a497359afa1abe4c5780c8799c6fe0edab551c2dBen Cheng */ 465a497359afa1abe4c5780c8799c6fe0edab551c2dBen Cheng gDvmJit.pProfTable = dvmDebuggerOrProfilerActive() ? NULL : pJitProfTable; 46606bb83906737fec543c86ab36f450cc62066b58aBill Buzbee gDvmJit.pProfTableCopy = pJitProfTable; 4672e152baec01433de9c63633ebc6f4adf1cea3a87buzbee gDvmJit.pJitTraceProfCounters = pJitTraceProfCounters; 46899e3e6e72e3471eb85fc2e405866392b01c080febuzbee dvmJitUpdateThreadStateAll(); 469964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee dvmUnlockMutex(&gDvmJit.tableLock); 470964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee 471964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee /* Signal running threads to refresh their cached pJitTable pointers */ 472964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee dvmSuspendAllThreads(SUSPEND_FOR_REFRESH); 473964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee dvmResumeAllThreads(SUSPEND_FOR_REFRESH); 474dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng 475dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng /* Enable signature breakpoints by customizing the following code */ 476dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng#if defined(SIGNATURE_BREAKPOINT) 477dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng /* 478dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * Suppose one sees the following native crash in the bugreport: 479dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * I/DEBUG ( 1638): Build fingerprint: 'unknown' 480dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * I/DEBUG ( 1638): pid: 2468, tid: 2507 >>> com.google.android.gallery3d 481dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * I/DEBUG ( 1638): signal 11 (SIGSEGV), fault addr 00001400 482dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * I/DEBUG ( 1638): r0 44ea7190 r1 44e4f7b8 r2 44ebc710 r3 00000000 483dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * I/DEBUG ( 1638): r4 00000a00 r5 41862dec r6 4710dc10 r7 00000280 484dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * I/DEBUG ( 1638): r8 ad010f40 r9 46a37a12 10 001116b0 fp 42a78208 485dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * I/DEBUG ( 1638): ip 00000090 sp 4710dbc8 lr ad060e67 pc 46b90682 486dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * cpsr 00000030 487dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * I/DEBUG ( 1638): #00 pc 46b90682 /dev/ashmem/dalvik-jit-code-cache 488dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * I/DEBUG ( 1638): #01 pc 00060e62 /system/lib/libdvm.so 489dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * 490dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * I/DEBUG ( 1638): code around pc: 491dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * I/DEBUG ( 1638): 46b90660 6888d01c 34091dcc d2174287 4a186b68 492dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * I/DEBUG ( 1638): 46b90670 d0052800 68006809 28004790 6b68d00e 493dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * I/DEBUG ( 1638): 46b90680 512000bc 37016eaf 6ea866af 6f696028 494dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * I/DEBUG ( 1638): 46b90690 682a6069 429a686b e003da08 6df1480b 495dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * I/DEBUG ( 1638): 46b906a0 1c2d4788 47806d70 46a378fa 47806d70 496dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * 497dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * Clearly it is a JIT bug. To find out which translation contains the 498dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * offending code, the content of the memory dump around the faulting PC 499dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * can be pasted into the gDvmJit.signatureBreakpoint[] array and next time 500dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * when a similar compilation is being created, the JIT compiler replay the 501dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * trace in the verbose mode and one can investigate the instruction 502dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * sequence in details. 503dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * 504dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * The length of the signature may need additional experiments to determine. 505dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * The rule of thumb is don't include PC-relative instructions in the 506dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * signature since it may be affected by the alignment of the compiled code. 507dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * However, a signature that's too short might increase the chance of false 508dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * positive matches. Using gdbjithelper to disassembly the memory content 509dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * first might be a good companion approach. 510dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * 511dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * For example, if the next 4 words starting from 46b90680 is pasted into 512dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * the data structure: 513dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng */ 514dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng 515dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng gDvmJit.signatureBreakpointSize = 4; 516dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng gDvmJit.signatureBreakpoint = 517dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng malloc(sizeof(u4) * gDvmJit.signatureBreakpointSize); 518dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng gDvmJit.signatureBreakpoint[0] = 0x512000bc; 519dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng gDvmJit.signatureBreakpoint[1] = 0x37016eaf; 520dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng gDvmJit.signatureBreakpoint[2] = 0x6ea866af; 521dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng gDvmJit.signatureBreakpoint[3] = 0x6f696028; 522dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng 523dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng /* 524dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * The following log will be printed when a match is found in subsequent 525dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * testings: 526dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * 527dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): Signature match starting from offset 0x34 (4 words) 528dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): -------- 529dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): Compiler: Building trace for computeVisibleItems, 530dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * offset 0x1f7 531dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x46a37a12: 0x0090 add-int v42, v5, v26 532dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x46a37a16: 0x004d aput-object v13, v14, v42 533dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x46a37a1a: 0x0028 goto, (#0), (#0) 534dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x46a3794e: 0x00d8 add-int/lit8 v26, v26, (#1) 535dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x46a37952: 0x0028 goto, (#0), (#0) 536dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x46a378ee: 0x0002 move/from16 v0, v26, (#0) 537dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x46a378f2: 0x0002 move/from16 v1, v29, (#0) 538dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x46a378f6: 0x0035 if-ge v0, v1, (#10) 539dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): TRACEINFO (554): 0x46a37624 540dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * Lcom/cooliris/media/GridLayer;computeVisibleItems 0x1f7 14 of 934, 8 541dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * blocks 542dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * : 543dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * : 544dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x20 (0020): ldr r0, [r5, #52] 545dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x22 (0022): ldr r2, [pc, #96] 546dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x24 (0024): cmp r0, #0 547dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x26 (0026): beq 0x00000034 548dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x28 (0028): ldr r1, [r1, #0] 549dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x2a (002a): ldr r0, [r0, #0] 550dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x2c (002c): blx r2 551dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x2e (002e): cmp r0, #0 552dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x30 (0030): beq 0x00000050 553dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x32 (0032): ldr r0, [r5, #52] 554dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x34 (0034): lsls r4, r7, #2 555dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x36 (0036): str r0, [r4, r4] 556dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): -------- dalvik offset: 0x01fb @ goto, (#0), (#0) 557dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): L0x0195: 558dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): -------- dalvik offset: 0x0195 @ add-int/lit8 v26, 559dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * v26, (#1) 560dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x38 (0038): ldr r7, [r5, #104] 561dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x3a (003a): adds r7, r7, #1 562dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x3c (003c): str r7, [r5, #104] 563dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): -------- dalvik offset: 0x0197 @ goto, (#0), (#0) 564dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): L0x0165: 565dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): -------- dalvik offset: 0x0165 @ move/from16 v0, v26, 566dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * (#0) 567dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x3e (003e): ldr r0, [r5, #104] 568dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x40 (0040): str r0, [r5, #0] 569dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * 570dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * The "str r0, [r4, r4]" is indeed the culprit of the native crash. 571dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng */ 572dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng#endif 573dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng 574964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee return true; 575964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee 576964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbeefail: 577964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee return false; 578964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee 579964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee} 580964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee 581ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Chengstatic void *compilerThreadStart(void *arg) 582ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng{ 5835ccdf0be4b448c98b595444a77dbaa21471ad1b1Ben Cheng dvmChangeStatus(NULL, THREAD_VMWAIT); 5845ccdf0be4b448c98b595444a77dbaa21471ad1b1Ben Cheng 585b1d8044ee3a7503b94eb54459f3077d7200cd675Bill Buzbee /* 586eb695c6f814f6b0bdbba0e837555d3fe5ad23104Bill Buzbee * If we're not running stand-alone, wait a little before 587eb695c6f814f6b0bdbba0e837555d3fe5ad23104Bill Buzbee * recieving translation requests on the assumption that process start 588eb695c6f814f6b0bdbba0e837555d3fe5ad23104Bill Buzbee * up code isn't worth compiling. We'll resume when the framework 589eb695c6f814f6b0bdbba0e837555d3fe5ad23104Bill Buzbee * signals us that the first screen draw has happened, or the timer 590eb695c6f814f6b0bdbba0e837555d3fe5ad23104Bill Buzbee * below expires (to catch daemons). 591f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * 592f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * There is a theoretical race between the callback to 593f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * VMRuntime.startJitCompiation and when the compiler thread reaches this 594f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * point. In case the callback happens earlier, in order not to permanently 595f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * hold the system_server (which is not using the timed wait) in 596f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * interpreter-only mode we bypass the delay here. 597b1d8044ee3a7503b94eb54459f3077d7200cd675Bill Buzbee */ 598f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng if (gDvmJit.runningInAndroidFramework && 599f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng !gDvmJit.alreadyEnabledViaFramework) { 600f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng /* 601f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * If the current VM instance is the system server (detected by having 602f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * 0 in gDvm.systemServerPid), we will use the indefinite wait on the 603f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * conditional variable to determine whether to start the JIT or not. 604f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * If the system server detects that the whole system is booted in 605f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * safe mode, the conditional variable will never be signaled and the 606f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * system server will remain in the interpreter-only mode. All 607f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * subsequent apps will be started with the --enable-safemode flag 608f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * explicitly appended. 609f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng */ 610f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng if (gDvm.systemServerPid == 0) { 611f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng dvmLockMutex(&gDvmJit.compilerLock); 612f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng pthread_cond_wait(&gDvmJit.compilerQueueActivity, 613f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng &gDvmJit.compilerLock); 614f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng dvmUnlockMutex(&gDvmJit.compilerLock); 615f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng LOGD("JIT started for system_server"); 616f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng } else { 617f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng dvmLockMutex(&gDvmJit.compilerLock); 618f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng /* 619f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * TUNING: experiment with the delay & perhaps make it 620f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * target-specific 621f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng */ 622f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng dvmRelativeCondWait(&gDvmJit.compilerQueueActivity, 623f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng &gDvmJit.compilerLock, 3000, 0); 624f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng dvmUnlockMutex(&gDvmJit.compilerLock); 625f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng } 626eb695c6f814f6b0bdbba0e837555d3fe5ad23104Bill Buzbee if (gDvmJit.haltCompilerThread) { 627eb695c6f814f6b0bdbba0e837555d3fe5ad23104Bill Buzbee return NULL; 628eb695c6f814f6b0bdbba0e837555d3fe5ad23104Bill Buzbee } 62994d89f8016b6c305ab0df491874dcedb252ecfccBill Buzbee } 63094d89f8016b6c305ab0df491874dcedb252ecfccBill Buzbee 631964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee compilerThreadStartup(); 632b1d8044ee3a7503b94eb54459f3077d7200cd675Bill Buzbee 633ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng dvmLockMutex(&gDvmJit.compilerLock); 634ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng /* 635ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng * Since the compiler thread will not touch any objects on the heap once 636ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng * being created, we just fake its state as VMWAIT so that it can be a 637ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng * bit late when there is suspend request pending. 638ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng */ 639ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng while (!gDvmJit.haltCompilerThread) { 640ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng if (workQueueLength() == 0) { 641ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng int cc; 642ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng cc = pthread_cond_signal(&gDvmJit.compilerQueueEmpty); 643ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng assert(cc == 0); 644ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng pthread_cond_wait(&gDvmJit.compilerQueueActivity, 645ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng &gDvmJit.compilerLock); 646ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng continue; 647ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng } else { 648ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng do { 649ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng CompilerWorkOrder work = workDequeue(); 650ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng dvmUnlockMutex(&gDvmJit.compilerLock); 651978738d2cbf9d08fa78c65762eaac3351ab76b9aBen Cheng#if defined(WITH_JIT_TUNING) 652db7d27bf88146ed20d2c8f3c424c998dae3b9971Doug Kwan /* 653db7d27bf88146ed20d2c8f3c424c998dae3b9971Doug Kwan * This is live across setjmp(). Mark it volatile to suppress 654db7d27bf88146ed20d2c8f3c424c998dae3b9971Doug Kwan * a gcc warning. We should not need this since it is assigned 655db7d27bf88146ed20d2c8f3c424c998dae3b9971Doug Kwan * only once but gcc is not smart enough. 656db7d27bf88146ed20d2c8f3c424c998dae3b9971Doug Kwan */ 657db7d27bf88146ed20d2c8f3c424c998dae3b9971Doug Kwan volatile u8 startTime = dvmGetRelativeTimeUsec(); 65886717f79d9b018f4d69cc991075fa36611f234e5Ben Cheng#endif 659964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee /* 660964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee * Check whether there is a suspend request on me. This 661964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee * is necessary to allow a clean shutdown. 66211d8f14eef83d1b7bfa8f116de56a92d5ba9e71eBen Cheng * 66311d8f14eef83d1b7bfa8f116de56a92d5ba9e71eBen Cheng * However, in the blocking stress testing mode, let the 66411d8f14eef83d1b7bfa8f116de56a92d5ba9e71eBen Cheng * compiler thread continue doing compilations to unblock 66511d8f14eef83d1b7bfa8f116de56a92d5ba9e71eBen Cheng * other requesting threads. This may occasionally cause 66611d8f14eef83d1b7bfa8f116de56a92d5ba9e71eBen Cheng * shutdown from proceeding cleanly in the standalone invocation 66711d8f14eef83d1b7bfa8f116de56a92d5ba9e71eBen Cheng * of the vm but this should be acceptable. 668964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee */ 66911d8f14eef83d1b7bfa8f116de56a92d5ba9e71eBen Cheng if (!gDvmJit.blockingMode) 670ab227f7a9a9d4c7837ee7a5cc9f07b665d516bacAndy McFadden dvmCheckSuspendPending(dvmThreadSelf()); 6712717622484eb0f7ad537275f7260b2f93324eda2Bill Buzbee /* Is JitTable filling up? */ 6722717622484eb0f7ad537275f7260b2f93324eda2Bill Buzbee if (gDvmJit.jitTableEntriesUsed > 6732717622484eb0f7ad537275f7260b2f93324eda2Bill Buzbee (gDvmJit.jitTableSize - gDvmJit.jitTableSize/4)) { 6746999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng bool resizeFail = 6756999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng dvmJitResizeJitTable(gDvmJit.jitTableSize * 2); 6766999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng /* 6776999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng * If the jit table is full, consider it's time to reset 6786999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng * the code cache too. 6796999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng */ 6806999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng gDvmJit.codeCacheFull |= resizeFail; 6812717622484eb0f7ad537275f7260b2f93324eda2Bill Buzbee } 682ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng if (gDvmJit.haltCompilerThread) { 683ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng LOGD("Compiler shutdown in progress - discarding request"); 6846999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng } else if (!gDvmJit.codeCacheFull) { 685fc519dc8f4444f6d93806ec15ce7445b322070fdBill Buzbee jmp_buf jmpBuf; 686fc519dc8f4444f6d93806ec15ce7445b322070fdBill Buzbee work.bailPtr = &jmpBuf; 687fc519dc8f4444f6d93806ec15ce7445b322070fdBill Buzbee bool aborted = setjmp(jmpBuf); 688fc519dc8f4444f6d93806ec15ce7445b322070fdBill Buzbee if (!aborted) { 6892e152baec01433de9c63633ebc6f4adf1cea3a87buzbee bool codeCompiled = dvmCompilerDoWork(&work); 6905867bea193779ff3009738513bae9bc84f4a34aabuzbee /* 6915867bea193779ff3009738513bae9bc84f4a34aabuzbee * Make sure we are still operating with the 6925867bea193779ff3009738513bae9bc84f4a34aabuzbee * same translation cache version. See 6935867bea193779ff3009738513bae9bc84f4a34aabuzbee * Issue 4271784 for details. 6945867bea193779ff3009738513bae9bc84f4a34aabuzbee */ 6955867bea193779ff3009738513bae9bc84f4a34aabuzbee dvmLockMutex(&gDvmJit.compilerLock); 6965867bea193779ff3009738513bae9bc84f4a34aabuzbee if ((work.result.cacheVersion == 6975867bea193779ff3009738513bae9bc84f4a34aabuzbee gDvmJit.cacheVersion) && 6985867bea193779ff3009738513bae9bc84f4a34aabuzbee codeCompiled && 6995867bea193779ff3009738513bae9bc84f4a34aabuzbee !work.result.discardResult && 7005867bea193779ff3009738513bae9bc84f4a34aabuzbee work.result.codeAddress) { 7012e152baec01433de9c63633ebc6f4adf1cea3a87buzbee dvmJitSetCodeAddr(work.pc, work.result.codeAddress, 7022e152baec01433de9c63633ebc6f4adf1cea3a87buzbee work.result.instructionSet, 703cfdeca37fcaa27c37bad5077223e4d1e87f1182eBen Cheng false, /* not method entry */ 7042e152baec01433de9c63633ebc6f4adf1cea3a87buzbee work.result.profileCodeSize); 7052e152baec01433de9c63633ebc6f4adf1cea3a87buzbee } 7065867bea193779ff3009738513bae9bc84f4a34aabuzbee dvmUnlockMutex(&gDvmJit.compilerLock); 70760c24f436d603c564d5351a6f81821f12635733cBen Cheng } 7082e152baec01433de9c63633ebc6f4adf1cea3a87buzbee dvmCompilerArenaReset(); 709ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng } 710ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng free(work.info); 711978738d2cbf9d08fa78c65762eaac3351ab76b9aBen Cheng#if defined(WITH_JIT_TUNING) 71286717f79d9b018f4d69cc991075fa36611f234e5Ben Cheng gDvmJit.jitTime += dvmGetRelativeTimeUsec() - startTime; 71386717f79d9b018f4d69cc991075fa36611f234e5Ben Cheng#endif 714ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng dvmLockMutex(&gDvmJit.compilerLock); 715ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng } while (workQueueLength() != 0); 716ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng } 717ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng } 718ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng pthread_cond_signal(&gDvmJit.compilerQueueEmpty); 719ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng dvmUnlockMutex(&gDvmJit.compilerLock); 720ef00a85e7f148f044b14942aa09204e2d0d72738Ben Cheng 7215ccdf0be4b448c98b595444a77dbaa21471ad1b1Ben Cheng /* 7225ccdf0be4b448c98b595444a77dbaa21471ad1b1Ben Cheng * As part of detaching the thread we need to call into Java code to update 7235ccdf0be4b448c98b595444a77dbaa21471ad1b1Ben Cheng * the ThreadGroup, and we should not be in VMWAIT state while executing 7245ccdf0be4b448c98b595444a77dbaa21471ad1b1Ben Cheng * interpreted code. 7255ccdf0be4b448c98b595444a77dbaa21471ad1b1Ben Cheng */ 7265ccdf0be4b448c98b595444a77dbaa21471ad1b1Ben Cheng dvmChangeStatus(NULL, THREAD_RUNNING); 7275ccdf0be4b448c98b595444a77dbaa21471ad1b1Ben Cheng 72843eb5015ca8bc0c859100b659d9c12934011a42eAndy McFadden if (gDvm.verboseShutdown) 72960fc806b679a3655c228b4093058c59941a49cfeDan Bornstein LOGD("Compiler thread shutting down"); 730ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng return NULL; 731ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng} 732ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 733ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Chengbool dvmCompilerStartup(void) 734ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng{ 73594d89f8016b6c305ab0df491874dcedb252ecfccBill Buzbee 73694d89f8016b6c305ab0df491874dcedb252ecfccBill Buzbee dvmInitMutex(&gDvmJit.compilerLock); 7376999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng dvmInitMutex(&gDvmJit.compilerICPatchLock); 738b88ec3cbb419b5eac23508dc6b73de2620d7521aBen Cheng dvmInitMutex(&gDvmJit.codeCacheProtectionLock); 73994d89f8016b6c305ab0df491874dcedb252ecfccBill Buzbee dvmLockMutex(&gDvmJit.compilerLock); 74094d89f8016b6c305ab0df491874dcedb252ecfccBill Buzbee pthread_cond_init(&gDvmJit.compilerQueueActivity, NULL); 74194d89f8016b6c305ab0df491874dcedb252ecfccBill Buzbee pthread_cond_init(&gDvmJit.compilerQueueEmpty, NULL); 74294d89f8016b6c305ab0df491874dcedb252ecfccBill Buzbee 74394d89f8016b6c305ab0df491874dcedb252ecfccBill Buzbee /* Reset the work queue */ 74494d89f8016b6c305ab0df491874dcedb252ecfccBill Buzbee gDvmJit.compilerWorkEnqueueIndex = gDvmJit.compilerWorkDequeueIndex = 0; 74594d89f8016b6c305ab0df491874dcedb252ecfccBill Buzbee gDvmJit.compilerQueueLength = 0; 74694d89f8016b6c305ab0df491874dcedb252ecfccBill Buzbee dvmUnlockMutex(&gDvmJit.compilerLock); 74794d89f8016b6c305ab0df491874dcedb252ecfccBill Buzbee 748ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng /* 74994d89f8016b6c305ab0df491874dcedb252ecfccBill Buzbee * Defer rest of initialization until we're sure JIT'ng makes sense. Launch 750964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee * the compiler thread, which will do the real initialization if and 751964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee * when it is signalled to do so. 752ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng */ 753964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee return dvmCreateInternalThread(&gDvmJit.compilerHandle, "Compiler", 754964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee compilerThreadStart, NULL); 755ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng} 756ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 757ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Chengvoid dvmCompilerShutdown(void) 758ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng{ 759ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng void *threadReturn; 760ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 7612fc03c3399cc33dc1c7d669e8970a87144ec7b97Bill Buzbee /* Disable new translation requests */ 7622fc03c3399cc33dc1c7d669e8970a87144ec7b97Bill Buzbee gDvmJit.pProfTable = NULL; 7632fc03c3399cc33dc1c7d669e8970a87144ec7b97Bill Buzbee gDvmJit.pProfTableCopy = NULL; 76499e3e6e72e3471eb85fc2e405866392b01c080febuzbee dvmJitUpdateThreadStateAll(); 7652fc03c3399cc33dc1c7d669e8970a87144ec7b97Bill Buzbee 7662e152baec01433de9c63633ebc6f4adf1cea3a87buzbee if (gDvm.verboseShutdown || 7672e152baec01433de9c63633ebc6f4adf1cea3a87buzbee gDvmJit.profileMode == kTraceProfilingContinuous) { 76888a0f970e47dc0091d2c9965aa9bd06667e5f4b7Ben Cheng dvmCompilerDumpStats(); 76988a0f970e47dc0091d2c9965aa9bd06667e5f4b7Ben Cheng while (gDvmJit.compilerQueueLength) 77088a0f970e47dc0091d2c9965aa9bd06667e5f4b7Ben Cheng sleep(5); 77188a0f970e47dc0091d2c9965aa9bd06667e5f4b7Ben Cheng } 77288a0f970e47dc0091d2c9965aa9bd06667e5f4b7Ben Cheng 773ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng if (gDvmJit.compilerHandle) { 774ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 775ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng gDvmJit.haltCompilerThread = true; 776ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 777ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng dvmLockMutex(&gDvmJit.compilerLock); 778ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng pthread_cond_signal(&gDvmJit.compilerQueueActivity); 779ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng dvmUnlockMutex(&gDvmJit.compilerLock); 780ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 781ef00a85e7f148f044b14942aa09204e2d0d72738Ben Cheng if (pthread_join(gDvmJit.compilerHandle, &threadReturn) != 0) 78260fc806b679a3655c228b4093058c59941a49cfeDan Bornstein LOGW("Compiler thread join failed"); 78343eb5015ca8bc0c859100b659d9c12934011a42eAndy McFadden else if (gDvm.verboseShutdown) 78460fc806b679a3655c228b4093058c59941a49cfeDan Bornstein LOGD("Compiler thread has shut down"); 785ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng } 78606bb83906737fec543c86ab36f450cc62066b58aBill Buzbee 7872fc03c3399cc33dc1c7d669e8970a87144ec7b97Bill Buzbee /* Break loops within the translation cache */ 7882fc03c3399cc33dc1c7d669e8970a87144ec7b97Bill Buzbee dvmJitUnchainAll(); 78996cfe6c39b91dabc78182e2f7676b27b4012886aBill Buzbee 7902fc03c3399cc33dc1c7d669e8970a87144ec7b97Bill Buzbee /* 7912fc03c3399cc33dc1c7d669e8970a87144ec7b97Bill Buzbee * NOTE: our current implementatation doesn't allow for the compiler 7922fc03c3399cc33dc1c7d669e8970a87144ec7b97Bill Buzbee * thread to be restarted after it exits here. We aren't freeing 7932fc03c3399cc33dc1c7d669e8970a87144ec7b97Bill Buzbee * the JitTable or the ProfTable because threads which still may be 7942fc03c3399cc33dc1c7d669e8970a87144ec7b97Bill Buzbee * running or in the process of shutting down may hold references to 7952fc03c3399cc33dc1c7d669e8970a87144ec7b97Bill Buzbee * them. 7962fc03c3399cc33dc1c7d669e8970a87144ec7b97Bill Buzbee */ 79796cfe6c39b91dabc78182e2f7676b27b4012886aBill Buzbee} 79806bb83906737fec543c86ab36f450cc62066b58aBill Buzbee 79999e3e6e72e3471eb85fc2e405866392b01c080febuzbeevoid dvmCompilerUpdateGlobalState() 80006bb83906737fec543c86ab36f450cc62066b58aBill Buzbee{ 80106bb83906737fec543c86ab36f450cc62066b58aBill Buzbee bool jitActive; 80206bb83906737fec543c86ab36f450cc62066b58aBill Buzbee bool jitActivate; 8033e392681fd57eaa64d4a65bd99d3576b8366569dBill Buzbee bool needUnchain = false; 80406bb83906737fec543c86ab36f450cc62066b58aBill Buzbee 805a497359afa1abe4c5780c8799c6fe0edab551c2dBen Cheng /* 806a497359afa1abe4c5780c8799c6fe0edab551c2dBen Cheng * The tableLock might not be initialized yet by the compiler thread if 807a497359afa1abe4c5780c8799c6fe0edab551c2dBen Cheng * debugger is attached from the very beginning of the VM launch. If 808a497359afa1abe4c5780c8799c6fe0edab551c2dBen Cheng * pProfTableCopy is NULL, the lock is not initialized yet and we don't 809a497359afa1abe4c5780c8799c6fe0edab551c2dBen Cheng * need to refresh anything either. 810a497359afa1abe4c5780c8799c6fe0edab551c2dBen Cheng */ 811a497359afa1abe4c5780c8799c6fe0edab551c2dBen Cheng if (gDvmJit.pProfTableCopy == NULL) { 812a497359afa1abe4c5780c8799c6fe0edab551c2dBen Cheng return; 813a497359afa1abe4c5780c8799c6fe0edab551c2dBen Cheng } 814a497359afa1abe4c5780c8799c6fe0edab551c2dBen Cheng 81518fba346582c08d81aa96d9508c0e935bad5f36fbuzbee /* 81618fba346582c08d81aa96d9508c0e935bad5f36fbuzbee * On the first enabling of method tracing, switch the compiler 81718fba346582c08d81aa96d9508c0e935bad5f36fbuzbee * into a mode that includes trace support for invokes and returns. 81818fba346582c08d81aa96d9508c0e935bad5f36fbuzbee * If there are any existing translations, flush them. NOTE: we 81918fba346582c08d81aa96d9508c0e935bad5f36fbuzbee * can't blindly flush the translation cache because this code 82018fba346582c08d81aa96d9508c0e935bad5f36fbuzbee * may be executed before the compiler thread has finished 82118fba346582c08d81aa96d9508c0e935bad5f36fbuzbee * initialization. 82218fba346582c08d81aa96d9508c0e935bad5f36fbuzbee */ 8239a3147c7412f4794434b4c2604aa2ba784867774buzbee if ((gDvm.activeProfilers != 0) && 82418fba346582c08d81aa96d9508c0e935bad5f36fbuzbee !gDvmJit.methodTraceSupport) { 82518fba346582c08d81aa96d9508c0e935bad5f36fbuzbee bool resetRequired; 82618fba346582c08d81aa96d9508c0e935bad5f36fbuzbee /* 82718fba346582c08d81aa96d9508c0e935bad5f36fbuzbee * compilerLock will prevent new compilations from being 82818fba346582c08d81aa96d9508c0e935bad5f36fbuzbee * installed while we are working. 82918fba346582c08d81aa96d9508c0e935bad5f36fbuzbee */ 83018fba346582c08d81aa96d9508c0e935bad5f36fbuzbee dvmLockMutex(&gDvmJit.compilerLock); 83118fba346582c08d81aa96d9508c0e935bad5f36fbuzbee gDvmJit.cacheVersion++; // invalidate compilations in flight 83218fba346582c08d81aa96d9508c0e935bad5f36fbuzbee gDvmJit.methodTraceSupport = true; 83318fba346582c08d81aa96d9508c0e935bad5f36fbuzbee resetRequired = (gDvmJit.numCompilations != 0); 83418fba346582c08d81aa96d9508c0e935bad5f36fbuzbee dvmUnlockMutex(&gDvmJit.compilerLock); 83518fba346582c08d81aa96d9508c0e935bad5f36fbuzbee if (resetRequired) { 83618fba346582c08d81aa96d9508c0e935bad5f36fbuzbee dvmSuspendAllThreads(SUSPEND_FOR_CC_RESET); 83718fba346582c08d81aa96d9508c0e935bad5f36fbuzbee resetCodeCache(); 83818fba346582c08d81aa96d9508c0e935bad5f36fbuzbee dvmResumeAllThreads(SUSPEND_FOR_CC_RESET); 83918fba346582c08d81aa96d9508c0e935bad5f36fbuzbee } 84018fba346582c08d81aa96d9508c0e935bad5f36fbuzbee } 84118fba346582c08d81aa96d9508c0e935bad5f36fbuzbee 84206bb83906737fec543c86ab36f450cc62066b58aBill Buzbee dvmLockMutex(&gDvmJit.tableLock); 84306bb83906737fec543c86ab36f450cc62066b58aBill Buzbee jitActive = gDvmJit.pProfTable != NULL; 844cb3081f675109049e63380170b60871e8275f9a8buzbee jitActivate = !dvmDebuggerOrProfilerActive(); 84506bb83906737fec543c86ab36f450cc62066b58aBill Buzbee 84606bb83906737fec543c86ab36f450cc62066b58aBill Buzbee if (jitActivate && !jitActive) { 84706bb83906737fec543c86ab36f450cc62066b58aBill Buzbee gDvmJit.pProfTable = gDvmJit.pProfTableCopy; 84806bb83906737fec543c86ab36f450cc62066b58aBill Buzbee } else if (!jitActivate && jitActive) { 84906bb83906737fec543c86ab36f450cc62066b58aBill Buzbee gDvmJit.pProfTable = NULL; 8503e392681fd57eaa64d4a65bd99d3576b8366569dBill Buzbee needUnchain = true; 85106bb83906737fec543c86ab36f450cc62066b58aBill Buzbee } 8523e392681fd57eaa64d4a65bd99d3576b8366569dBill Buzbee dvmUnlockMutex(&gDvmJit.tableLock); 8533e392681fd57eaa64d4a65bd99d3576b8366569dBill Buzbee if (needUnchain) 8543e392681fd57eaa64d4a65bd99d3576b8366569dBill Buzbee dvmJitUnchainAll(); 8559a3147c7412f4794434b4c2604aa2ba784867774buzbee // Make sure all threads have current values 85699e3e6e72e3471eb85fc2e405866392b01c080febuzbee dvmJitUpdateThreadStateAll(); 85706bb83906737fec543c86ab36f450cc62066b58aBill Buzbee} 858