Compiler.cpp revision 9a3147c7412f4794434b4c2604aa2ba784867774
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 25ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Chengstatic inline bool workQueueLength(void) 26ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng{ 27ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng return gDvmJit.compilerQueueLength; 28ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng} 29ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 30ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Chengstatic CompilerWorkOrder workDequeue(void) 31ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng{ 32ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng assert(gDvmJit.compilerWorkQueue[gDvmJit.compilerWorkDequeueIndex].kind 33ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng != kWorkOrderInvalid); 34ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng CompilerWorkOrder work = 35ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng gDvmJit.compilerWorkQueue[gDvmJit.compilerWorkDequeueIndex]; 36ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng gDvmJit.compilerWorkQueue[gDvmJit.compilerWorkDequeueIndex++].kind = 37ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng kWorkOrderInvalid; 38ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng if (gDvmJit.compilerWorkDequeueIndex == COMPILER_WORK_QUEUE_SIZE) { 39ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng gDvmJit.compilerWorkDequeueIndex = 0; 40ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng } 41ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng gDvmJit.compilerQueueLength--; 42f9f33287693f9f9aa44318036b8aab627bd21a32Bill Buzbee if (gDvmJit.compilerQueueLength == 0) { 43b31b30131bbf58280a515c40027aa958b81b5cd6Carl Shapiro dvmSignalCond(&gDvmJit.compilerQueueEmpty); 44f9f33287693f9f9aa44318036b8aab627bd21a32Bill Buzbee } 45ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 46ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng /* Remember the high water mark of the queue length */ 47ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng if (gDvmJit.compilerQueueLength > gDvmJit.compilerMaxQueued) 48ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng gDvmJit.compilerMaxQueued = gDvmJit.compilerQueueLength; 49ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 50ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng return work; 51ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng} 52ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 531b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee/* 541b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee * Enqueue a work order - retrying until successful. If attempt to enqueue 551b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee * is repeatedly unsuccessful, assume the JIT is in a bad state and force a 561b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee * code cache reset. 571b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee */ 581b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee#define ENQUEUE_MAX_RETRIES 20 591b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbeevoid dvmCompilerForceWorkEnqueue(const u2 *pc, WorkOrderKind kind, void* info) 601b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee{ 611b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee bool success; 621b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee int retries = 0; 631b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee do { 641b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee success = dvmCompilerWorkEnqueue(pc, kind, info); 651b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee if (!success) { 661b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee retries++; 671b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee if (retries > ENQUEUE_MAX_RETRIES) { 681b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee LOGE("JIT: compiler queue wedged - forcing reset"); 691b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee gDvmJit.codeCacheFull = true; // Force reset 701b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee success = true; // Because we'll drop the order now anyway 711b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee } else { 721b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee dvmLockMutex(&gDvmJit.compilerLock); 731b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee pthread_cond_wait(&gDvmJit.compilerQueueActivity, 741b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee &gDvmJit.compilerLock); 751b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee dvmUnlockMutex(&gDvmJit.compilerLock); 761b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee 771b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee } 781b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee } 791b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee } while (!success); 801b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee} 811b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee 82964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee/* 83964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee * Attempt to enqueue a work order, returning true if successful. 841357e94efecd485bda933270a9181035f6a39e09Ben Cheng * 851357e94efecd485bda933270a9181035f6a39e09Ben Cheng * NOTE: Make sure that the caller frees the info pointer if the return value 861357e94efecd485bda933270a9181035f6a39e09Ben Cheng * is false. 87964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee */ 88ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Chengbool dvmCompilerWorkEnqueue(const u2 *pc, WorkOrderKind kind, void* info) 89ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng{ 90ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng int cc; 91ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng int i; 92ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng int numWork; 9360c24f436d603c564d5351a6f81821f12635733cBen Cheng bool result = true; 94ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 951b3da59fff0c63770e10684e243a36f3d0218637Bill Buzbee dvmLockMutex(&gDvmJit.compilerLock); 96ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 977a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng /* 986999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng * Return if queue or code cache is full. 997a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng */ 1006999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng if (gDvmJit.compilerQueueLength == COMPILER_WORK_QUEUE_SIZE || 1016999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng gDvmJit.codeCacheFull == true) { 10260c24f436d603c564d5351a6f81821f12635733cBen Cheng result = false; 103964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee goto unlockAndExit; 104ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng } 105ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 106ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng for (numWork = gDvmJit.compilerQueueLength, 107ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng i = gDvmJit.compilerWorkDequeueIndex; 108ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng numWork > 0; 109ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng numWork--) { 110ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng /* Already enqueued */ 111ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng if (gDvmJit.compilerWorkQueue[i++].pc == pc) 112964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee goto unlockAndExit; 113ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng /* Wrap around */ 114ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng if (i == COMPILER_WORK_QUEUE_SIZE) 115ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng i = 0; 116ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng } 117ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 118ccd6c0102d1f898aaea1c94761167fdd083b5275Ben Cheng CompilerWorkOrder *newOrder = 119ccd6c0102d1f898aaea1c94761167fdd083b5275Ben Cheng &gDvmJit.compilerWorkQueue[gDvmJit.compilerWorkEnqueueIndex]; 120ccd6c0102d1f898aaea1c94761167fdd083b5275Ben Cheng newOrder->pc = pc; 121ccd6c0102d1f898aaea1c94761167fdd083b5275Ben Cheng newOrder->kind = kind; 122ccd6c0102d1f898aaea1c94761167fdd083b5275Ben Cheng newOrder->info = info; 1237a2697d327936e20ef5484f7819e2e4bf91c891fBen Cheng newOrder->result.methodCompilationAborted = NULL; 124ccd6c0102d1f898aaea1c94761167fdd083b5275Ben Cheng newOrder->result.codeAddress = NULL; 125ccd6c0102d1f898aaea1c94761167fdd083b5275Ben Cheng newOrder->result.discardResult = 1261f74863d3e0f19930818398f375ebf1cf2d78969Bill Buzbee (kind == kWorkOrderTraceDebug) ? true : false; 12718fba346582c08d81aa96d9508c0e935bad5f36fbuzbee newOrder->result.cacheVersion = gDvmJit.cacheVersion; 12833672456e19bff9913b4a3459e6b8472f4c26c84Ben Cheng newOrder->result.requestingThread = dvmThreadSelf(); 12933672456e19bff9913b4a3459e6b8472f4c26c84Ben Cheng 130ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng gDvmJit.compilerWorkEnqueueIndex++; 131ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng if (gDvmJit.compilerWorkEnqueueIndex == COMPILER_WORK_QUEUE_SIZE) 132ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng gDvmJit.compilerWorkEnqueueIndex = 0; 133ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng gDvmJit.compilerQueueLength++; 134ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng cc = pthread_cond_signal(&gDvmJit.compilerQueueActivity); 135ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng assert(cc == 0); 136ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 137964a7b06a9134947b5985c7f712d18d57ed665d2Bill BuzbeeunlockAndExit: 138ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng dvmUnlockMutex(&gDvmJit.compilerLock); 13960c24f436d603c564d5351a6f81821f12635733cBen Cheng return result; 140ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng} 141ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 14211d8f14eef83d1b7bfa8f116de56a92d5ba9e71eBen Cheng/* Block until the queue length is 0, or there is a pending suspend request */ 143ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Chengvoid dvmCompilerDrainQueue(void) 144ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng{ 14511d8f14eef83d1b7bfa8f116de56a92d5ba9e71eBen Cheng Thread *self = dvmThreadSelf(); 14611d8f14eef83d1b7bfa8f116de56a92d5ba9e71eBen Cheng 147ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng dvmLockMutex(&gDvmJit.compilerLock); 14811d8f14eef83d1b7bfa8f116de56a92d5ba9e71eBen Cheng while (workQueueLength() != 0 && !gDvmJit.haltCompilerThread && 1499a3147c7412f4794434b4c2604aa2ba784867774buzbee self->interpBreak.ctl.suspendCount == 0) { 150812e6b1a6485e4468bc88fd69e9304817b8192ddBen Cheng /* 151812e6b1a6485e4468bc88fd69e9304817b8192ddBen Cheng * Use timed wait here - more than one mutator threads may be blocked 152812e6b1a6485e4468bc88fd69e9304817b8192ddBen Cheng * but the compiler thread will only signal once when the queue is 153812e6b1a6485e4468bc88fd69e9304817b8192ddBen Cheng * emptied. Furthermore, the compiler thread may have been shutdown 154812e6b1a6485e4468bc88fd69e9304817b8192ddBen Cheng * so the blocked thread may never get the wakeup signal. 155812e6b1a6485e4468bc88fd69e9304817b8192ddBen Cheng */ 156812e6b1a6485e4468bc88fd69e9304817b8192ddBen Cheng dvmRelativeCondWait(&gDvmJit.compilerQueueEmpty, &gDvmJit.compilerLock, 1000, 0); 157ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng } 158ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng dvmUnlockMutex(&gDvmJit.compilerLock); 159ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng} 160ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 16160c24f436d603c564d5351a6f81821f12635733cBen Chengbool dvmCompilerSetupCodeCache(void) 16260c24f436d603c564d5351a6f81821f12635733cBen Cheng{ 16360c24f436d603c564d5351a6f81821f12635733cBen Cheng extern void dvmCompilerTemplateStart(void); 16460c24f436d603c564d5351a6f81821f12635733cBen Cheng extern void dmvCompilerTemplateEnd(void); 1657c4afdb7e96bb74909f111f08741aed261d191f8Ben Cheng int fd; 16660c24f436d603c564d5351a6f81821f12635733cBen Cheng 16760c24f436d603c564d5351a6f81821f12635733cBen Cheng /* Allocate the code cache */ 1687c4afdb7e96bb74909f111f08741aed261d191f8Ben Cheng fd = ashmem_create_region("dalvik-jit-code-cache", gDvmJit.codeCacheSize); 1697c4afdb7e96bb74909f111f08741aed261d191f8Ben Cheng if (fd < 0) { 1707c4afdb7e96bb74909f111f08741aed261d191f8Ben Cheng LOGE("Could not create %u-byte ashmem region for the JIT code cache", 1717c4afdb7e96bb74909f111f08741aed261d191f8Ben Cheng gDvmJit.codeCacheSize); 1727c4afdb7e96bb74909f111f08741aed261d191f8Ben Cheng return false; 1737c4afdb7e96bb74909f111f08741aed261d191f8Ben Cheng } 1747c4afdb7e96bb74909f111f08741aed261d191f8Ben Cheng gDvmJit.codeCache = mmap(NULL, gDvmJit.codeCacheSize, 1757c4afdb7e96bb74909f111f08741aed261d191f8Ben Cheng PROT_READ | PROT_WRITE | PROT_EXEC, 1767c4afdb7e96bb74909f111f08741aed261d191f8Ben Cheng MAP_PRIVATE , fd, 0); 1777c4afdb7e96bb74909f111f08741aed261d191f8Ben Cheng close(fd); 17860c24f436d603c564d5351a6f81821f12635733cBen Cheng if (gDvmJit.codeCache == MAP_FAILED) { 1797c4afdb7e96bb74909f111f08741aed261d191f8Ben Cheng LOGE("Failed to mmap the JIT code cache: %s\n", strerror(errno)); 18060c24f436d603c564d5351a6f81821f12635733cBen Cheng return false; 18160c24f436d603c564d5351a6f81821f12635733cBen Cheng } 18260c24f436d603c564d5351a6f81821f12635733cBen Cheng 183b88ec3cbb419b5eac23508dc6b73de2620d7521aBen Cheng gDvmJit.pageSizeMask = getpagesize() - 1; 184b88ec3cbb419b5eac23508dc6b73de2620d7521aBen Cheng 1857c4afdb7e96bb74909f111f08741aed261d191f8Ben Cheng /* This can be found through "dalvik-jit-code-cache" in /proc/<pid>/maps */ 1867c4afdb7e96bb74909f111f08741aed261d191f8Ben Cheng // LOGD("Code cache starts at %p", gDvmJit.codeCache); 1877a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng 18860c24f436d603c564d5351a6f81821f12635733cBen Cheng /* Copy the template code into the beginning of the code cache */ 18960c24f436d603c564d5351a6f81821f12635733cBen Cheng int templateSize = (intptr_t) dmvCompilerTemplateEnd - 19060c24f436d603c564d5351a6f81821f12635733cBen Cheng (intptr_t) dvmCompilerTemplateStart; 19160c24f436d603c564d5351a6f81821f12635733cBen Cheng memcpy((void *) gDvmJit.codeCache, 19260c24f436d603c564d5351a6f81821f12635733cBen Cheng (void *) dvmCompilerTemplateStart, 19360c24f436d603c564d5351a6f81821f12635733cBen Cheng templateSize); 19460c24f436d603c564d5351a6f81821f12635733cBen Cheng 19572621c9d3c175b0f9b239de5b0bcd83c7e5984e8Ben Cheng /* 19672621c9d3c175b0f9b239de5b0bcd83c7e5984e8Ben Cheng * Work around a CPU bug by keeping the 32-bit ARM handler code in its own 19772621c9d3c175b0f9b239de5b0bcd83c7e5984e8Ben Cheng * page. 19872621c9d3c175b0f9b239de5b0bcd83c7e5984e8Ben Cheng */ 19972621c9d3c175b0f9b239de5b0bcd83c7e5984e8Ben Cheng if (dvmCompilerInstructionSet() == DALVIK_JIT_THUMB2) { 20072621c9d3c175b0f9b239de5b0bcd83c7e5984e8Ben Cheng templateSize = (templateSize + 4095) & ~4095; 20172621c9d3c175b0f9b239de5b0bcd83c7e5984e8Ben Cheng } 20272621c9d3c175b0f9b239de5b0bcd83c7e5984e8Ben Cheng 20360c24f436d603c564d5351a6f81821f12635733cBen Cheng gDvmJit.templateSize = templateSize; 20460c24f436d603c564d5351a6f81821f12635733cBen Cheng gDvmJit.codeCacheByteUsed = templateSize; 20560c24f436d603c564d5351a6f81821f12635733cBen Cheng 20660c24f436d603c564d5351a6f81821f12635733cBen Cheng /* Only flush the part in the code cache that is being used now */ 20713fbc2e4bfa04cce8e181ac37d7f2b13a54aa037buzbee dvmCompilerCacheFlush((intptr_t) gDvmJit.codeCache, 20813fbc2e4bfa04cce8e181ac37d7f2b13a54aa037buzbee (intptr_t) gDvmJit.codeCache + templateSize, 0); 209b88ec3cbb419b5eac23508dc6b73de2620d7521aBen Cheng 2101f3da0b96578b9d9e4f9e38577d3365b7a49147bBen Cheng int result = mprotect(gDvmJit.codeCache, gDvmJit.codeCacheSize, 2111f3da0b96578b9d9e4f9e38577d3365b7a49147bBen Cheng PROTECT_CODE_CACHE_ATTRS); 2121f3da0b96578b9d9e4f9e38577d3365b7a49147bBen Cheng 2131f3da0b96578b9d9e4f9e38577d3365b7a49147bBen Cheng if (result == -1) { 2141f3da0b96578b9d9e4f9e38577d3365b7a49147bBen Cheng LOGE("Failed to remove the write permission for the code cache"); 2151f3da0b96578b9d9e4f9e38577d3365b7a49147bBen Cheng dvmAbort(); 2161f3da0b96578b9d9e4f9e38577d3365b7a49147bBen Cheng } 217b88ec3cbb419b5eac23508dc6b73de2620d7521aBen Cheng 21860c24f436d603c564d5351a6f81821f12635733cBen Cheng return true; 21960c24f436d603c564d5351a6f81821f12635733cBen Cheng} 22060c24f436d603c564d5351a6f81821f12635733cBen Cheng 2217a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Chengstatic void crawlDalvikStack(Thread *thread, bool print) 2227a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng{ 2237a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng void *fp = thread->curFrame; 2247a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng StackSaveArea* saveArea = NULL; 2257a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng int stackLevel = 0; 2267a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng 2277a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng if (print) { 2287a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng LOGD("Crawling tid %d (%s / %p %s)", thread->systemTid, 2297a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng dvmGetThreadStatusStr(thread->status), 2307a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng thread->inJitCodeCache, 2317a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng thread->inJitCodeCache ? "jit" : "interp"); 2327a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng } 2337a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng /* Crawl the Dalvik stack frames to clear the returnAddr field */ 2347a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng while (fp != NULL) { 2357a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng saveArea = SAVEAREA_FROM_FP(fp); 2367a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng 2377a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng if (print) { 238fc75f3ed87b55d625b6054e18645da5cbdba31c6Carl Shapiro if (dvmIsBreakFrame((u4*)fp)) { 2397a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng LOGD(" #%d: break frame (%p)", 2407a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng stackLevel, saveArea->returnAddr); 2417a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng } 2427a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng else { 2437a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng LOGD(" #%d: %s.%s%s (%p)", 2447a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng stackLevel, 2457a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng saveArea->method->clazz->descriptor, 2467a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng saveArea->method->name, 2477a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng dvmIsNativeMethod(saveArea->method) ? 2487a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng " (native)" : "", 2497a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng saveArea->returnAddr); 2507a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng } 2517a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng } 2527a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng stackLevel++; 2537a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng saveArea->returnAddr = NULL; 2547a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng assert(fp != saveArea->prevFrame); 2557a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng fp = saveArea->prevFrame; 2567a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng } 2577a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng /* Make sure the stack is fully unwound to the bottom */ 2587a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng assert(saveArea == NULL || 2597a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng (u1 *) (saveArea+1) == thread->interpStackStart); 2607a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng} 2617a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng 26260c24f436d603c564d5351a6f81821f12635733cBen Chengstatic void resetCodeCache(void) 26360c24f436d603c564d5351a6f81821f12635733cBen Cheng{ 26460c24f436d603c564d5351a6f81821f12635733cBen Cheng Thread* thread; 2657a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng u8 startTime = dvmGetRelativeTimeUsec(); 2667a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng int inJit = 0; 2676999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng int byteUsed = gDvmJit.codeCacheByteUsed; 26860c24f436d603c564d5351a6f81821f12635733cBen Cheng 2697a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng /* If any thread is found stuck in the JIT state, don't reset the cache */ 27060c24f436d603c564d5351a6f81821f12635733cBen Cheng for (thread = gDvm.threadList; thread != NULL; thread = thread->next) { 2716999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng /* 2726999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng * Crawl the stack to wipe out the returnAddr field so that 2736999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng * 1) the soon-to-be-deleted code in the JIT cache won't be used 2746999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng * 2) or the thread stuck in the JIT land will soon return 2756999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng * to the interpreter land 2766999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng */ 2776999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng crawlDalvikStack(thread, false); 2787a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng if (thread->inJitCodeCache) { 2797a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng inJit++; 2807a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng } 2817a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng } 28260c24f436d603c564d5351a6f81821f12635733cBen Cheng 2837a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng if (inJit) { 2846999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng LOGD("JIT code cache reset delayed (%d bytes %d/%d)", 2856999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng gDvmJit.codeCacheByteUsed, gDvmJit.numCodeCacheReset, 2866999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng ++gDvmJit.numCodeCacheResetDelayed); 2876999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng return; 2887a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng } 2897a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng 2906999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng /* Lock the mutex to clean up the work queue */ 2916999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng dvmLockMutex(&gDvmJit.compilerLock); 2926999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng 29318fba346582c08d81aa96d9508c0e935bad5f36fbuzbee /* Update the translation cache version */ 29418fba346582c08d81aa96d9508c0e935bad5f36fbuzbee gDvmJit.cacheVersion++; 29518fba346582c08d81aa96d9508c0e935bad5f36fbuzbee 2966999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng /* Drain the work queue to free the work orders */ 2977a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng while (workQueueLength()) { 2987a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng CompilerWorkOrder work = workDequeue(); 2997a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng free(work.info); 3007a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng } 3017a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng 30260c24f436d603c564d5351a6f81821f12635733cBen Cheng /* Reset the JitEntry table contents to the initial unpopulated state */ 30360c24f436d603c564d5351a6f81821f12635733cBen Cheng dvmJitResetTable(); 30460c24f436d603c564d5351a6f81821f12635733cBen Cheng 305b88ec3cbb419b5eac23508dc6b73de2620d7521aBen Cheng UNPROTECT_CODE_CACHE(gDvmJit.codeCache, gDvmJit.codeCacheByteUsed); 30660c24f436d603c564d5351a6f81821f12635733cBen Cheng /* 30760c24f436d603c564d5351a6f81821f12635733cBen Cheng * Wipe out the code cache content to force immediate crashes if 30860c24f436d603c564d5351a6f81821f12635733cBen Cheng * stale JIT'ed code is invoked. 30960c24f436d603c564d5351a6f81821f12635733cBen Cheng */ 3107a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng memset((char *) gDvmJit.codeCache + gDvmJit.templateSize, 3117a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng 0, 3127a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng gDvmJit.codeCacheByteUsed - gDvmJit.templateSize); 31313fbc2e4bfa04cce8e181ac37d7f2b13a54aa037buzbee dvmCompilerCacheFlush((intptr_t) gDvmJit.codeCache, 31413fbc2e4bfa04cce8e181ac37d7f2b13a54aa037buzbee (intptr_t) gDvmJit.codeCache + 31513fbc2e4bfa04cce8e181ac37d7f2b13a54aa037buzbee gDvmJit.codeCacheByteUsed, 0); 31660c24f436d603c564d5351a6f81821f12635733cBen Cheng 317b88ec3cbb419b5eac23508dc6b73de2620d7521aBen Cheng PROTECT_CODE_CACHE(gDvmJit.codeCache, gDvmJit.codeCacheByteUsed); 318b88ec3cbb419b5eac23508dc6b73de2620d7521aBen Cheng 31960c24f436d603c564d5351a6f81821f12635733cBen Cheng /* Reset the current mark of used bytes to the end of template code */ 32060c24f436d603c564d5351a6f81821f12635733cBen Cheng gDvmJit.codeCacheByteUsed = gDvmJit.templateSize; 32160c24f436d603c564d5351a6f81821f12635733cBen Cheng gDvmJit.numCompilations = 0; 32260c24f436d603c564d5351a6f81821f12635733cBen Cheng 32360c24f436d603c564d5351a6f81821f12635733cBen Cheng /* Reset the work queue */ 32460c24f436d603c564d5351a6f81821f12635733cBen Cheng memset(gDvmJit.compilerWorkQueue, 0, 32560c24f436d603c564d5351a6f81821f12635733cBen Cheng sizeof(CompilerWorkOrder) * COMPILER_WORK_QUEUE_SIZE); 32660c24f436d603c564d5351a6f81821f12635733cBen Cheng gDvmJit.compilerWorkEnqueueIndex = gDvmJit.compilerWorkDequeueIndex = 0; 32760c24f436d603c564d5351a6f81821f12635733cBen Cheng gDvmJit.compilerQueueLength = 0; 32860c24f436d603c564d5351a6f81821f12635733cBen Cheng 3296999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng /* Reset the IC patch work queue */ 3306999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng dvmLockMutex(&gDvmJit.compilerICPatchLock); 3316999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng gDvmJit.compilerICPatchIndex = 0; 3326999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng dvmUnlockMutex(&gDvmJit.compilerICPatchLock); 3336999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng 334385828e36ea70effe9aa18a954d008b1f7dc1d63Ben Cheng /* 335385828e36ea70effe9aa18a954d008b1f7dc1d63Ben Cheng * Reset the inflight compilation address (can only be done in safe points 336385828e36ea70effe9aa18a954d008b1f7dc1d63Ben Cheng * or by the compiler thread when its thread state is RUNNING). 337385828e36ea70effe9aa18a954d008b1f7dc1d63Ben Cheng */ 338385828e36ea70effe9aa18a954d008b1f7dc1d63Ben Cheng gDvmJit.inflightBaseAddr = NULL; 339385828e36ea70effe9aa18a954d008b1f7dc1d63Ben Cheng 34060c24f436d603c564d5351a6f81821f12635733cBen Cheng /* All clear now */ 34160c24f436d603c564d5351a6f81821f12635733cBen Cheng gDvmJit.codeCacheFull = false; 34260c24f436d603c564d5351a6f81821f12635733cBen Cheng 3436999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng dvmUnlockMutex(&gDvmJit.compilerLock); 3447a0bcd0de6c4da6499a088a18d1750e51204c2a6Ben Cheng 3456999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng LOGD("JIT code cache reset in %lld ms (%d bytes %d/%d)", 3466999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng (dvmGetRelativeTimeUsec() - startTime) / 1000, 3476999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng byteUsed, ++gDvmJit.numCodeCacheReset, 3486999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng gDvmJit.numCodeCacheResetDelayed); 3496999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng} 3506999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng 3516999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng/* 3526999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng * Perform actions that are only safe when all threads are suspended. Currently 3536999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng * we do: 3546999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng * 1) Check if the code cache is full. If so reset it and restart populating it 3556999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng * from scratch. 3566999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng * 2) Patch predicted chaining cells by consuming recorded work orders. 3576999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng */ 3586999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Chengvoid dvmCompilerPerformSafePointChecks(void) 3596999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng{ 3606999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng if (gDvmJit.codeCacheFull) { 3616999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng resetCodeCache(); 3626999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng } 3636999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng dvmCompilerPatchInlineCache(); 36460c24f436d603c564d5351a6f81821f12635733cBen Cheng} 36560c24f436d603c564d5351a6f81821f12635733cBen Cheng 366953a0ed4e507fd6e756aa3e5c671bee80d7e9b3eAndy McFaddenstatic bool compilerThreadStartup(void) 367964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee{ 368964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee JitEntry *pJitTable = NULL; 369964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee unsigned char *pJitProfTable = NULL; 3702e152baec01433de9c63633ebc6f4adf1cea3a87buzbee JitTraceProfCounters *pJitTraceProfCounters = NULL; 371964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee unsigned int i; 372964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee 373964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee if (!dvmCompilerArchInit()) 374964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee goto fail; 375964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee 376964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee /* 377964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee * Setup the code cache if we have not inherited a valid code cache 378964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee * from the zygote. 379964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee */ 380964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee if (gDvmJit.codeCache == NULL) { 381964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee if (!dvmCompilerSetupCodeCache()) 382964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee goto fail; 383964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee } 384964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee 385964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee /* Allocate the initial arena block */ 386964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee if (dvmCompilerHeapInit() == false) { 387964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee goto fail; 388964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee } 389964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee 390385828e36ea70effe9aa18a954d008b1f7dc1d63Ben Cheng /* Cache the thread pointer */ 391385828e36ea70effe9aa18a954d008b1f7dc1d63Ben Cheng gDvmJit.compilerThread = dvmThreadSelf(); 392385828e36ea70effe9aa18a954d008b1f7dc1d63Ben Cheng 393964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee dvmLockMutex(&gDvmJit.compilerLock); 394964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee 395964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee /* Track method-level compilation statistics */ 396964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee gDvmJit.methodStatsTable = dvmHashTableCreate(32, NULL); 3977a2697d327936e20ef5484f7819e2e4bf91c891fBen Cheng 3987a2697d327936e20ef5484f7819e2e4bf91c891fBen Cheng#if defined(WITH_JIT_TUNING) 399452efba773098c070c6bd623124e1fed21342ba4Ben Cheng gDvm.verboseShutdown = true; 4001357e94efecd485bda933270a9181035f6a39e09Ben Cheng#endif 401964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee 402964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee dvmUnlockMutex(&gDvmJit.compilerLock); 403964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee 404964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee /* Set up the JitTable */ 405964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee 406964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee /* Power of 2? */ 407964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee assert(gDvmJit.jitTableSize && 408964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee !(gDvmJit.jitTableSize & (gDvmJit.jitTableSize - 1))); 409964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee 410964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee dvmInitMutex(&gDvmJit.tableLock); 411964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee dvmLockMutex(&gDvmJit.tableLock); 412964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee pJitTable = (JitEntry*) 413964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee calloc(gDvmJit.jitTableSize, sizeof(*pJitTable)); 414964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee if (!pJitTable) { 415964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee LOGE("jit table allocation failed\n"); 416964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee dvmUnlockMutex(&gDvmJit.tableLock); 417964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee goto fail; 418964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee } 419964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee /* 420964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee * NOTE: the profile table must only be allocated once, globally. 421964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee * Profiling is turned on and off by nulling out gDvm.pJitProfTable 422964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee * and then restoring its original value. However, this action 4239a3147c7412f4794434b4c2604aa2ba784867774buzbee * is not synchronized for speed so threads may continue to hold 424964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee * and update the profile table after profiling has been turned 425964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee * off by null'ng the global pointer. Be aware. 426964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee */ 427964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee pJitProfTable = (unsigned char *)malloc(JIT_PROF_SIZE); 428964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee if (!pJitProfTable) { 429964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee LOGE("jit prof table allocation failed\n"); 430964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee dvmUnlockMutex(&gDvmJit.tableLock); 431964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee goto fail; 432964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee } 433964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee memset(pJitProfTable, gDvmJit.threshold, JIT_PROF_SIZE); 434964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee for (i=0; i < gDvmJit.jitTableSize; i++) { 435964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee pJitTable[i].u.info.chain = gDvmJit.jitTableSize; 436964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee } 437964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee /* Is chain field wide enough for termination pattern? */ 438964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee assert(pJitTable[0].u.info.chain == gDvmJit.jitTableSize); 439964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee 4402e152baec01433de9c63633ebc6f4adf1cea3a87buzbee /* Allocate the trace profiling structure */ 4412e152baec01433de9c63633ebc6f4adf1cea3a87buzbee pJitTraceProfCounters = (JitTraceProfCounters*) 4422e152baec01433de9c63633ebc6f4adf1cea3a87buzbee calloc(1, sizeof(*pJitTraceProfCounters)); 4432e152baec01433de9c63633ebc6f4adf1cea3a87buzbee if (!pJitTraceProfCounters) { 4442e152baec01433de9c63633ebc6f4adf1cea3a87buzbee LOGE("jit trace prof counters allocation failed\n"); 4452e152baec01433de9c63633ebc6f4adf1cea3a87buzbee dvmUnlockMutex(&gDvmJit.tableLock); 4462e152baec01433de9c63633ebc6f4adf1cea3a87buzbee goto fail; 4472e152baec01433de9c63633ebc6f4adf1cea3a87buzbee } 4482e152baec01433de9c63633ebc6f4adf1cea3a87buzbee 449964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee gDvmJit.pJitEntryTable = pJitTable; 450964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee gDvmJit.jitTableMask = gDvmJit.jitTableSize - 1; 451964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee gDvmJit.jitTableEntriesUsed = 0; 452964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee gDvmJit.compilerHighWater = 453964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee COMPILER_WORK_QUEUE_SIZE - (COMPILER_WORK_QUEUE_SIZE/4); 454a497359afa1abe4c5780c8799c6fe0edab551c2dBen Cheng /* 455a497359afa1abe4c5780c8799c6fe0edab551c2dBen Cheng * If the VM is launched with wait-on-the-debugger, we will need to hide 456a497359afa1abe4c5780c8799c6fe0edab551c2dBen Cheng * the profile table here 457a497359afa1abe4c5780c8799c6fe0edab551c2dBen Cheng */ 458a497359afa1abe4c5780c8799c6fe0edab551c2dBen Cheng gDvmJit.pProfTable = dvmDebuggerOrProfilerActive() ? NULL : pJitProfTable; 45906bb83906737fec543c86ab36f450cc62066b58aBill Buzbee gDvmJit.pProfTableCopy = pJitProfTable; 4602e152baec01433de9c63633ebc6f4adf1cea3a87buzbee gDvmJit.pJitTraceProfCounters = pJitTraceProfCounters; 4619a3147c7412f4794434b4c2604aa2ba784867774buzbee dvmJitUpdateState(); 462964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee dvmUnlockMutex(&gDvmJit.tableLock); 463964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee 464964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee /* Signal running threads to refresh their cached pJitTable pointers */ 465964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee dvmSuspendAllThreads(SUSPEND_FOR_REFRESH); 466964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee dvmResumeAllThreads(SUSPEND_FOR_REFRESH); 467dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng 468dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng /* Enable signature breakpoints by customizing the following code */ 469dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng#if defined(SIGNATURE_BREAKPOINT) 470dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng /* 471dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * Suppose one sees the following native crash in the bugreport: 472dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * I/DEBUG ( 1638): Build fingerprint: 'unknown' 473dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * I/DEBUG ( 1638): pid: 2468, tid: 2507 >>> com.google.android.gallery3d 474dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * I/DEBUG ( 1638): signal 11 (SIGSEGV), fault addr 00001400 475dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * I/DEBUG ( 1638): r0 44ea7190 r1 44e4f7b8 r2 44ebc710 r3 00000000 476dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * I/DEBUG ( 1638): r4 00000a00 r5 41862dec r6 4710dc10 r7 00000280 477dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * I/DEBUG ( 1638): r8 ad010f40 r9 46a37a12 10 001116b0 fp 42a78208 478dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * I/DEBUG ( 1638): ip 00000090 sp 4710dbc8 lr ad060e67 pc 46b90682 479dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * cpsr 00000030 480dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * I/DEBUG ( 1638): #00 pc 46b90682 /dev/ashmem/dalvik-jit-code-cache 481dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * I/DEBUG ( 1638): #01 pc 00060e62 /system/lib/libdvm.so 482dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * 483dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * I/DEBUG ( 1638): code around pc: 484dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * I/DEBUG ( 1638): 46b90660 6888d01c 34091dcc d2174287 4a186b68 485dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * I/DEBUG ( 1638): 46b90670 d0052800 68006809 28004790 6b68d00e 486dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * I/DEBUG ( 1638): 46b90680 512000bc 37016eaf 6ea866af 6f696028 487dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * I/DEBUG ( 1638): 46b90690 682a6069 429a686b e003da08 6df1480b 488dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * I/DEBUG ( 1638): 46b906a0 1c2d4788 47806d70 46a378fa 47806d70 489dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * 490dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * Clearly it is a JIT bug. To find out which translation contains the 491dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * offending code, the content of the memory dump around the faulting PC 492dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * can be pasted into the gDvmJit.signatureBreakpoint[] array and next time 493dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * when a similar compilation is being created, the JIT compiler replay the 494dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * trace in the verbose mode and one can investigate the instruction 495dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * sequence in details. 496dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * 497dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * The length of the signature may need additional experiments to determine. 498dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * The rule of thumb is don't include PC-relative instructions in the 499dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * signature since it may be affected by the alignment of the compiled code. 500dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * However, a signature that's too short might increase the chance of false 501dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * positive matches. Using gdbjithelper to disassembly the memory content 502dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * first might be a good companion approach. 503dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * 504dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * For example, if the next 4 words starting from 46b90680 is pasted into 505dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * the data structure: 506dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng */ 507dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng 508dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng gDvmJit.signatureBreakpointSize = 4; 509dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng gDvmJit.signatureBreakpoint = 510dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng malloc(sizeof(u4) * gDvmJit.signatureBreakpointSize); 511dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng gDvmJit.signatureBreakpoint[0] = 0x512000bc; 512dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng gDvmJit.signatureBreakpoint[1] = 0x37016eaf; 513dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng gDvmJit.signatureBreakpoint[2] = 0x6ea866af; 514dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng gDvmJit.signatureBreakpoint[3] = 0x6f696028; 515dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng 516dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng /* 517dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * The following log will be printed when a match is found in subsequent 518dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * testings: 519dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * 520dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): Signature match starting from offset 0x34 (4 words) 521dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): -------- 522dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): Compiler: Building trace for computeVisibleItems, 523dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * offset 0x1f7 524dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x46a37a12: 0x0090 add-int v42, v5, v26 525dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x46a37a16: 0x004d aput-object v13, v14, v42 526dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x46a37a1a: 0x0028 goto, (#0), (#0) 527dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x46a3794e: 0x00d8 add-int/lit8 v26, v26, (#1) 528dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x46a37952: 0x0028 goto, (#0), (#0) 529dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x46a378ee: 0x0002 move/from16 v0, v26, (#0) 530dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x46a378f2: 0x0002 move/from16 v1, v29, (#0) 531dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x46a378f6: 0x0035 if-ge v0, v1, (#10) 532dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): TRACEINFO (554): 0x46a37624 533dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * Lcom/cooliris/media/GridLayer;computeVisibleItems 0x1f7 14 of 934, 8 534dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * blocks 535dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * : 536dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * : 537dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x20 (0020): ldr r0, [r5, #52] 538dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x22 (0022): ldr r2, [pc, #96] 539dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x24 (0024): cmp r0, #0 540dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x26 (0026): beq 0x00000034 541dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x28 (0028): ldr r1, [r1, #0] 542dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x2a (002a): ldr r0, [r0, #0] 543dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x2c (002c): blx r2 544dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x2e (002e): cmp r0, #0 545dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x30 (0030): beq 0x00000050 546dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x32 (0032): ldr r0, [r5, #52] 547dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x34 (0034): lsls r4, r7, #2 548dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x36 (0036): str r0, [r4, r4] 549dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): -------- dalvik offset: 0x01fb @ goto, (#0), (#0) 550dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): L0x0195: 551dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): -------- dalvik offset: 0x0195 @ add-int/lit8 v26, 552dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * v26, (#1) 553dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x38 (0038): ldr r7, [r5, #104] 554dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x3a (003a): adds r7, r7, #1 555dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x3c (003c): str r7, [r5, #104] 556dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): -------- dalvik offset: 0x0197 @ goto, (#0), (#0) 557dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): L0x0165: 558dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): -------- dalvik offset: 0x0165 @ move/from16 v0, v26, 559dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * (#0) 560dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x3e (003e): ldr r0, [r5, #104] 561dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * D/dalvikvm( 2468): 0x40 (0040): str r0, [r5, #0] 562dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * 563dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng * The "str r0, [r4, r4]" is indeed the culprit of the native crash. 564dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng */ 565dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng#endif 566dca714364abf3111fc18c1ac49c2760392fb7c9bBen Cheng 567964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee return true; 568964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee 569964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbeefail: 570964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee return false; 571964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee 572964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee} 573964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee 574ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Chengstatic void *compilerThreadStart(void *arg) 575ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng{ 5765ccdf0be4b448c98b595444a77dbaa21471ad1b1Ben Cheng dvmChangeStatus(NULL, THREAD_VMWAIT); 5775ccdf0be4b448c98b595444a77dbaa21471ad1b1Ben Cheng 578b1d8044ee3a7503b94eb54459f3077d7200cd675Bill Buzbee /* 579eb695c6f814f6b0bdbba0e837555d3fe5ad23104Bill Buzbee * If we're not running stand-alone, wait a little before 580eb695c6f814f6b0bdbba0e837555d3fe5ad23104Bill Buzbee * recieving translation requests on the assumption that process start 581eb695c6f814f6b0bdbba0e837555d3fe5ad23104Bill Buzbee * up code isn't worth compiling. We'll resume when the framework 582eb695c6f814f6b0bdbba0e837555d3fe5ad23104Bill Buzbee * signals us that the first screen draw has happened, or the timer 583eb695c6f814f6b0bdbba0e837555d3fe5ad23104Bill Buzbee * below expires (to catch daemons). 584f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * 585f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * There is a theoretical race between the callback to 586f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * VMRuntime.startJitCompiation and when the compiler thread reaches this 587f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * point. In case the callback happens earlier, in order not to permanently 588f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * hold the system_server (which is not using the timed wait) in 589f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * interpreter-only mode we bypass the delay here. 590b1d8044ee3a7503b94eb54459f3077d7200cd675Bill Buzbee */ 591f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng if (gDvmJit.runningInAndroidFramework && 592f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng !gDvmJit.alreadyEnabledViaFramework) { 593f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng /* 594f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * If the current VM instance is the system server (detected by having 595f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * 0 in gDvm.systemServerPid), we will use the indefinite wait on the 596f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * conditional variable to determine whether to start the JIT or not. 597f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * If the system server detects that the whole system is booted in 598f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * safe mode, the conditional variable will never be signaled and the 599f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * system server will remain in the interpreter-only mode. All 600f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * subsequent apps will be started with the --enable-safemode flag 601f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * explicitly appended. 602f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng */ 603f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng if (gDvm.systemServerPid == 0) { 604f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng dvmLockMutex(&gDvmJit.compilerLock); 605f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng pthread_cond_wait(&gDvmJit.compilerQueueActivity, 606f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng &gDvmJit.compilerLock); 607f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng dvmUnlockMutex(&gDvmJit.compilerLock); 608f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng LOGD("JIT started for system_server"); 609f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng } else { 610f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng dvmLockMutex(&gDvmJit.compilerLock); 611f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng /* 612f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * TUNING: experiment with the delay & perhaps make it 613f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng * target-specific 614f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng */ 615f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng dvmRelativeCondWait(&gDvmJit.compilerQueueActivity, 616f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng &gDvmJit.compilerLock, 3000, 0); 617f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng dvmUnlockMutex(&gDvmJit.compilerLock); 618f30acbb249b137b049500f136d2bb273c0b6221aBen Cheng } 619eb695c6f814f6b0bdbba0e837555d3fe5ad23104Bill Buzbee if (gDvmJit.haltCompilerThread) { 620eb695c6f814f6b0bdbba0e837555d3fe5ad23104Bill Buzbee return NULL; 621eb695c6f814f6b0bdbba0e837555d3fe5ad23104Bill Buzbee } 62294d89f8016b6c305ab0df491874dcedb252ecfccBill Buzbee } 62394d89f8016b6c305ab0df491874dcedb252ecfccBill Buzbee 624964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee compilerThreadStartup(); 625b1d8044ee3a7503b94eb54459f3077d7200cd675Bill Buzbee 626ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng dvmLockMutex(&gDvmJit.compilerLock); 627ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng /* 628ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng * Since the compiler thread will not touch any objects on the heap once 629ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng * being created, we just fake its state as VMWAIT so that it can be a 630ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng * bit late when there is suspend request pending. 631ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng */ 632ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng while (!gDvmJit.haltCompilerThread) { 633ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng if (workQueueLength() == 0) { 634ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng int cc; 635ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng cc = pthread_cond_signal(&gDvmJit.compilerQueueEmpty); 636ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng assert(cc == 0); 637ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng pthread_cond_wait(&gDvmJit.compilerQueueActivity, 638ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng &gDvmJit.compilerLock); 639ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng continue; 640ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng } else { 641ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng do { 642ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng CompilerWorkOrder work = workDequeue(); 643ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng dvmUnlockMutex(&gDvmJit.compilerLock); 644978738d2cbf9d08fa78c65762eaac3351ab76b9aBen Cheng#if defined(WITH_JIT_TUNING) 64586717f79d9b018f4d69cc991075fa36611f234e5Ben Cheng u8 startTime = dvmGetRelativeTimeUsec(); 64686717f79d9b018f4d69cc991075fa36611f234e5Ben Cheng#endif 647964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee /* 648964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee * Check whether there is a suspend request on me. This 649964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee * is necessary to allow a clean shutdown. 65011d8f14eef83d1b7bfa8f116de56a92d5ba9e71eBen Cheng * 65111d8f14eef83d1b7bfa8f116de56a92d5ba9e71eBen Cheng * However, in the blocking stress testing mode, let the 65211d8f14eef83d1b7bfa8f116de56a92d5ba9e71eBen Cheng * compiler thread continue doing compilations to unblock 65311d8f14eef83d1b7bfa8f116de56a92d5ba9e71eBen Cheng * other requesting threads. This may occasionally cause 65411d8f14eef83d1b7bfa8f116de56a92d5ba9e71eBen Cheng * shutdown from proceeding cleanly in the standalone invocation 65511d8f14eef83d1b7bfa8f116de56a92d5ba9e71eBen Cheng * of the vm but this should be acceptable. 656964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee */ 65711d8f14eef83d1b7bfa8f116de56a92d5ba9e71eBen Cheng if (!gDvmJit.blockingMode) 658ab227f7a9a9d4c7837ee7a5cc9f07b665d516bacAndy McFadden dvmCheckSuspendPending(dvmThreadSelf()); 6592717622484eb0f7ad537275f7260b2f93324eda2Bill Buzbee /* Is JitTable filling up? */ 6602717622484eb0f7ad537275f7260b2f93324eda2Bill Buzbee if (gDvmJit.jitTableEntriesUsed > 6612717622484eb0f7ad537275f7260b2f93324eda2Bill Buzbee (gDvmJit.jitTableSize - gDvmJit.jitTableSize/4)) { 6626999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng bool resizeFail = 6636999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng dvmJitResizeJitTable(gDvmJit.jitTableSize * 2); 6646999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng /* 6656999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng * If the jit table is full, consider it's time to reset 6666999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng * the code cache too. 6676999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng */ 6686999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng gDvmJit.codeCacheFull |= resizeFail; 6692717622484eb0f7ad537275f7260b2f93324eda2Bill Buzbee } 670ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng if (gDvmJit.haltCompilerThread) { 671ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng LOGD("Compiler shutdown in progress - discarding request"); 6726999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng } else if (!gDvmJit.codeCacheFull) { 673fc519dc8f4444f6d93806ec15ce7445b322070fdBill Buzbee jmp_buf jmpBuf; 674fc519dc8f4444f6d93806ec15ce7445b322070fdBill Buzbee work.bailPtr = &jmpBuf; 675fc519dc8f4444f6d93806ec15ce7445b322070fdBill Buzbee bool aborted = setjmp(jmpBuf); 676fc519dc8f4444f6d93806ec15ce7445b322070fdBill Buzbee if (!aborted) { 6772e152baec01433de9c63633ebc6f4adf1cea3a87buzbee bool codeCompiled = dvmCompilerDoWork(&work); 6782e152baec01433de9c63633ebc6f4adf1cea3a87buzbee if (codeCompiled && !work.result.discardResult && 6792e152baec01433de9c63633ebc6f4adf1cea3a87buzbee work.result.codeAddress) { 6802e152baec01433de9c63633ebc6f4adf1cea3a87buzbee dvmJitSetCodeAddr(work.pc, work.result.codeAddress, 6812e152baec01433de9c63633ebc6f4adf1cea3a87buzbee work.result.instructionSet, 682cfdeca37fcaa27c37bad5077223e4d1e87f1182eBen Cheng false, /* not method entry */ 6832e152baec01433de9c63633ebc6f4adf1cea3a87buzbee work.result.profileCodeSize); 6842e152baec01433de9c63633ebc6f4adf1cea3a87buzbee } 68560c24f436d603c564d5351a6f81821f12635733cBen Cheng } 6862e152baec01433de9c63633ebc6f4adf1cea3a87buzbee dvmCompilerArenaReset(); 687ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng } 688ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng free(work.info); 689978738d2cbf9d08fa78c65762eaac3351ab76b9aBen Cheng#if defined(WITH_JIT_TUNING) 69086717f79d9b018f4d69cc991075fa36611f234e5Ben Cheng gDvmJit.jitTime += dvmGetRelativeTimeUsec() - startTime; 69186717f79d9b018f4d69cc991075fa36611f234e5Ben Cheng#endif 692ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng dvmLockMutex(&gDvmJit.compilerLock); 693ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng } while (workQueueLength() != 0); 694ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng } 695ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng } 696ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng pthread_cond_signal(&gDvmJit.compilerQueueEmpty); 697ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng dvmUnlockMutex(&gDvmJit.compilerLock); 698ef00a85e7f148f044b14942aa09204e2d0d72738Ben Cheng 6995ccdf0be4b448c98b595444a77dbaa21471ad1b1Ben Cheng /* 7005ccdf0be4b448c98b595444a77dbaa21471ad1b1Ben Cheng * As part of detaching the thread we need to call into Java code to update 7015ccdf0be4b448c98b595444a77dbaa21471ad1b1Ben Cheng * the ThreadGroup, and we should not be in VMWAIT state while executing 7025ccdf0be4b448c98b595444a77dbaa21471ad1b1Ben Cheng * interpreted code. 7035ccdf0be4b448c98b595444a77dbaa21471ad1b1Ben Cheng */ 7045ccdf0be4b448c98b595444a77dbaa21471ad1b1Ben Cheng dvmChangeStatus(NULL, THREAD_RUNNING); 7055ccdf0be4b448c98b595444a77dbaa21471ad1b1Ben Cheng 70643eb5015ca8bc0c859100b659d9c12934011a42eAndy McFadden if (gDvm.verboseShutdown) 70743eb5015ca8bc0c859100b659d9c12934011a42eAndy McFadden LOGD("Compiler thread shutting down\n"); 708ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng return NULL; 709ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng} 710ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 711ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Chengbool dvmCompilerStartup(void) 712ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng{ 71394d89f8016b6c305ab0df491874dcedb252ecfccBill Buzbee 71494d89f8016b6c305ab0df491874dcedb252ecfccBill Buzbee dvmInitMutex(&gDvmJit.compilerLock); 7156999d84e2c55dc4a46a6c311b55bd5811336d9c4Ben Cheng dvmInitMutex(&gDvmJit.compilerICPatchLock); 716b88ec3cbb419b5eac23508dc6b73de2620d7521aBen Cheng dvmInitMutex(&gDvmJit.codeCacheProtectionLock); 71794d89f8016b6c305ab0df491874dcedb252ecfccBill Buzbee dvmLockMutex(&gDvmJit.compilerLock); 71894d89f8016b6c305ab0df491874dcedb252ecfccBill Buzbee pthread_cond_init(&gDvmJit.compilerQueueActivity, NULL); 71994d89f8016b6c305ab0df491874dcedb252ecfccBill Buzbee pthread_cond_init(&gDvmJit.compilerQueueEmpty, NULL); 72094d89f8016b6c305ab0df491874dcedb252ecfccBill Buzbee 72194d89f8016b6c305ab0df491874dcedb252ecfccBill Buzbee /* Reset the work queue */ 72294d89f8016b6c305ab0df491874dcedb252ecfccBill Buzbee gDvmJit.compilerWorkEnqueueIndex = gDvmJit.compilerWorkDequeueIndex = 0; 72394d89f8016b6c305ab0df491874dcedb252ecfccBill Buzbee gDvmJit.compilerQueueLength = 0; 72494d89f8016b6c305ab0df491874dcedb252ecfccBill Buzbee dvmUnlockMutex(&gDvmJit.compilerLock); 72594d89f8016b6c305ab0df491874dcedb252ecfccBill Buzbee 726ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng /* 72794d89f8016b6c305ab0df491874dcedb252ecfccBill Buzbee * Defer rest of initialization until we're sure JIT'ng makes sense. Launch 728964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee * the compiler thread, which will do the real initialization if and 729964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee * when it is signalled to do so. 730ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng */ 731964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee return dvmCreateInternalThread(&gDvmJit.compilerHandle, "Compiler", 732964a7b06a9134947b5985c7f712d18d57ed665d2Bill Buzbee compilerThreadStart, NULL); 733ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng} 734ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 735ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Chengvoid dvmCompilerShutdown(void) 736ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng{ 737ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng void *threadReturn; 738ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 7392fc03c3399cc33dc1c7d669e8970a87144ec7b97Bill Buzbee /* Disable new translation requests */ 7402fc03c3399cc33dc1c7d669e8970a87144ec7b97Bill Buzbee gDvmJit.pProfTable = NULL; 7412fc03c3399cc33dc1c7d669e8970a87144ec7b97Bill Buzbee gDvmJit.pProfTableCopy = NULL; 7429a3147c7412f4794434b4c2604aa2ba784867774buzbee dvmJitUpdateState(); 7432fc03c3399cc33dc1c7d669e8970a87144ec7b97Bill Buzbee 7442e152baec01433de9c63633ebc6f4adf1cea3a87buzbee if (gDvm.verboseShutdown || 7452e152baec01433de9c63633ebc6f4adf1cea3a87buzbee gDvmJit.profileMode == kTraceProfilingContinuous) { 74688a0f970e47dc0091d2c9965aa9bd06667e5f4b7Ben Cheng dvmCompilerDumpStats(); 74788a0f970e47dc0091d2c9965aa9bd06667e5f4b7Ben Cheng while (gDvmJit.compilerQueueLength) 74888a0f970e47dc0091d2c9965aa9bd06667e5f4b7Ben Cheng sleep(5); 74988a0f970e47dc0091d2c9965aa9bd06667e5f4b7Ben Cheng } 75088a0f970e47dc0091d2c9965aa9bd06667e5f4b7Ben Cheng 751ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng if (gDvmJit.compilerHandle) { 752ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 753ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng gDvmJit.haltCompilerThread = true; 754ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 755ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng dvmLockMutex(&gDvmJit.compilerLock); 756ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng pthread_cond_signal(&gDvmJit.compilerQueueActivity); 757ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng dvmUnlockMutex(&gDvmJit.compilerLock); 758ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng 759ef00a85e7f148f044b14942aa09204e2d0d72738Ben Cheng if (pthread_join(gDvmJit.compilerHandle, &threadReturn) != 0) 760ef00a85e7f148f044b14942aa09204e2d0d72738Ben Cheng LOGW("Compiler thread join failed\n"); 76143eb5015ca8bc0c859100b659d9c12934011a42eAndy McFadden else if (gDvm.verboseShutdown) 762ef00a85e7f148f044b14942aa09204e2d0d72738Ben Cheng LOGD("Compiler thread has shut down\n"); 763ba4fc8bfc1bccae048403bd1cea3b869dca61dd7Ben Cheng } 76406bb83906737fec543c86ab36f450cc62066b58aBill Buzbee 7652fc03c3399cc33dc1c7d669e8970a87144ec7b97Bill Buzbee /* Break loops within the translation cache */ 7662fc03c3399cc33dc1c7d669e8970a87144ec7b97Bill Buzbee dvmJitUnchainAll(); 76796cfe6c39b91dabc78182e2f7676b27b4012886aBill Buzbee 7682fc03c3399cc33dc1c7d669e8970a87144ec7b97Bill Buzbee /* 7692fc03c3399cc33dc1c7d669e8970a87144ec7b97Bill Buzbee * NOTE: our current implementatation doesn't allow for the compiler 7702fc03c3399cc33dc1c7d669e8970a87144ec7b97Bill Buzbee * thread to be restarted after it exits here. We aren't freeing 7712fc03c3399cc33dc1c7d669e8970a87144ec7b97Bill Buzbee * the JitTable or the ProfTable because threads which still may be 7722fc03c3399cc33dc1c7d669e8970a87144ec7b97Bill Buzbee * running or in the process of shutting down may hold references to 7732fc03c3399cc33dc1c7d669e8970a87144ec7b97Bill Buzbee * them. 7742fc03c3399cc33dc1c7d669e8970a87144ec7b97Bill Buzbee */ 77596cfe6c39b91dabc78182e2f7676b27b4012886aBill Buzbee} 77606bb83906737fec543c86ab36f450cc62066b58aBill Buzbee 77706bb83906737fec543c86ab36f450cc62066b58aBill Buzbeevoid dvmCompilerStateRefresh() 77806bb83906737fec543c86ab36f450cc62066b58aBill Buzbee{ 77906bb83906737fec543c86ab36f450cc62066b58aBill Buzbee bool jitActive; 78006bb83906737fec543c86ab36f450cc62066b58aBill Buzbee bool jitActivate; 7813e392681fd57eaa64d4a65bd99d3576b8366569dBill Buzbee bool needUnchain = false; 78206bb83906737fec543c86ab36f450cc62066b58aBill Buzbee 783a497359afa1abe4c5780c8799c6fe0edab551c2dBen Cheng /* 784a497359afa1abe4c5780c8799c6fe0edab551c2dBen Cheng * The tableLock might not be initialized yet by the compiler thread if 785a497359afa1abe4c5780c8799c6fe0edab551c2dBen Cheng * debugger is attached from the very beginning of the VM launch. If 786a497359afa1abe4c5780c8799c6fe0edab551c2dBen Cheng * pProfTableCopy is NULL, the lock is not initialized yet and we don't 787a497359afa1abe4c5780c8799c6fe0edab551c2dBen Cheng * need to refresh anything either. 788a497359afa1abe4c5780c8799c6fe0edab551c2dBen Cheng */ 789a497359afa1abe4c5780c8799c6fe0edab551c2dBen Cheng if (gDvmJit.pProfTableCopy == NULL) { 790a497359afa1abe4c5780c8799c6fe0edab551c2dBen Cheng return; 791a497359afa1abe4c5780c8799c6fe0edab551c2dBen Cheng } 792a497359afa1abe4c5780c8799c6fe0edab551c2dBen Cheng 79318fba346582c08d81aa96d9508c0e935bad5f36fbuzbee /* 79418fba346582c08d81aa96d9508c0e935bad5f36fbuzbee * On the first enabling of method tracing, switch the compiler 79518fba346582c08d81aa96d9508c0e935bad5f36fbuzbee * into a mode that includes trace support for invokes and returns. 79618fba346582c08d81aa96d9508c0e935bad5f36fbuzbee * If there are any existing translations, flush them. NOTE: we 79718fba346582c08d81aa96d9508c0e935bad5f36fbuzbee * can't blindly flush the translation cache because this code 79818fba346582c08d81aa96d9508c0e935bad5f36fbuzbee * may be executed before the compiler thread has finished 79918fba346582c08d81aa96d9508c0e935bad5f36fbuzbee * initialization. 80018fba346582c08d81aa96d9508c0e935bad5f36fbuzbee */ 8019a3147c7412f4794434b4c2604aa2ba784867774buzbee if ((gDvm.activeProfilers != 0) && 80218fba346582c08d81aa96d9508c0e935bad5f36fbuzbee !gDvmJit.methodTraceSupport) { 80318fba346582c08d81aa96d9508c0e935bad5f36fbuzbee bool resetRequired; 80418fba346582c08d81aa96d9508c0e935bad5f36fbuzbee /* 80518fba346582c08d81aa96d9508c0e935bad5f36fbuzbee * compilerLock will prevent new compilations from being 80618fba346582c08d81aa96d9508c0e935bad5f36fbuzbee * installed while we are working. 80718fba346582c08d81aa96d9508c0e935bad5f36fbuzbee */ 80818fba346582c08d81aa96d9508c0e935bad5f36fbuzbee dvmLockMutex(&gDvmJit.compilerLock); 80918fba346582c08d81aa96d9508c0e935bad5f36fbuzbee gDvmJit.cacheVersion++; // invalidate compilations in flight 81018fba346582c08d81aa96d9508c0e935bad5f36fbuzbee gDvmJit.methodTraceSupport = true; 81118fba346582c08d81aa96d9508c0e935bad5f36fbuzbee resetRequired = (gDvmJit.numCompilations != 0); 81218fba346582c08d81aa96d9508c0e935bad5f36fbuzbee dvmUnlockMutex(&gDvmJit.compilerLock); 81318fba346582c08d81aa96d9508c0e935bad5f36fbuzbee if (resetRequired) { 81418fba346582c08d81aa96d9508c0e935bad5f36fbuzbee dvmSuspendAllThreads(SUSPEND_FOR_CC_RESET); 81518fba346582c08d81aa96d9508c0e935bad5f36fbuzbee resetCodeCache(); 81618fba346582c08d81aa96d9508c0e935bad5f36fbuzbee dvmResumeAllThreads(SUSPEND_FOR_CC_RESET); 81718fba346582c08d81aa96d9508c0e935bad5f36fbuzbee } 81818fba346582c08d81aa96d9508c0e935bad5f36fbuzbee } 81918fba346582c08d81aa96d9508c0e935bad5f36fbuzbee 82006bb83906737fec543c86ab36f450cc62066b58aBill Buzbee dvmLockMutex(&gDvmJit.tableLock); 82106bb83906737fec543c86ab36f450cc62066b58aBill Buzbee jitActive = gDvmJit.pProfTable != NULL; 822cb3081f675109049e63380170b60871e8275f9a8buzbee jitActivate = !dvmDebuggerOrProfilerActive(); 82306bb83906737fec543c86ab36f450cc62066b58aBill Buzbee 82406bb83906737fec543c86ab36f450cc62066b58aBill Buzbee if (jitActivate && !jitActive) { 82506bb83906737fec543c86ab36f450cc62066b58aBill Buzbee gDvmJit.pProfTable = gDvmJit.pProfTableCopy; 82606bb83906737fec543c86ab36f450cc62066b58aBill Buzbee } else if (!jitActivate && jitActive) { 82706bb83906737fec543c86ab36f450cc62066b58aBill Buzbee gDvmJit.pProfTable = NULL; 8283e392681fd57eaa64d4a65bd99d3576b8366569dBill Buzbee needUnchain = true; 82906bb83906737fec543c86ab36f450cc62066b58aBill Buzbee } 8303e392681fd57eaa64d4a65bd99d3576b8366569dBill Buzbee dvmUnlockMutex(&gDvmJit.tableLock); 8313e392681fd57eaa64d4a65bd99d3576b8366569dBill Buzbee if (needUnchain) 8323e392681fd57eaa64d4a65bd99d3576b8366569dBill Buzbee dvmJitUnchainAll(); 8339a3147c7412f4794434b4c2604aa2ba784867774buzbee // Make sure all threads have current values 8349a3147c7412f4794434b4c2604aa2ba784867774buzbee dvmJitUpdateState(); 83506bb83906737fec543c86ab36f450cc62066b58aBill Buzbee} 836