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rossa.cpp
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rossa.cpp
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/*******************************************************************************
* Copyright (c) 2000, 2020 IBM Corp. and others
*
* This program and the accompanying materials are made available under
* the terms of the Eclipse Public License 2.0 which accompanies this
* distribution and is available at https://www.eclipse.org/legal/epl-2.0/
* or the Apache License, Version 2.0 which accompanies this distribution and
* is available at https://www.apache.org/licenses/LICENSE-2.0.
*
* This Source Code may also be made available under the following
* Secondary Licenses when the conditions for such availability set
* forth in the Eclipse Public License, v. 2.0 are satisfied: GNU
* General Public License, version 2 with the GNU Classpath
* Exception [1] and GNU General Public License, version 2 with the
* OpenJDK Assembly Exception [2].
*
* [1] https://www.gnu.org/software/classpath/license.html
* [2] http://openjdk.java.net/legal/assembly-exception.html
*
* SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0 WITH Classpath-exception-2.0 OR LicenseRef-GPL-2.0 WITH Assembly-exception
*******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef WINDOWS
#include <winsock2.h>
#include <process.h>
#else
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <unistd.h>
#include <pthread.h>
#ifdef J9ZOS390
#include <arpa/inet.h>
#endif
#endif
#ifdef J9ZTPF
#include <tpf/c_eb0eb.h>
#include <tpf/sysapi.h>
#include <tpf/tpfapi.h>
#include <tpf/c_cinfc.h>
#endif
#include "env/annotations/AnnotationBase.hpp"
#define J9_EXTERNAL_TO_VM
#include "codegen/PrivateLinkage.hpp"
#include "control/CompilationRuntime.hpp"
#include "control/CompilationThread.hpp"
#include "control/JitDump.hpp"
#include "control/Recompilation.hpp"
#include "control/RecompilationInfo.hpp"
#include "runtime/ArtifactManager.hpp"
#include "runtime/CodeCache.hpp"
#include "runtime/CodeCacheManager.hpp"
#include "runtime/CodeCacheReclamation.h"
#include "runtime/codertinit.hpp"
#include "runtime/IProfiler.hpp"
#include "runtime/HWProfiler.hpp"
#include "env/PersistentInfo.hpp"
#include "env/ClassLoaderTable.hpp"
#include "env/J2IThunk.hpp"
#include "env/PersistentCHTable.hpp"
#include "env/CompilerEnv.hpp"
#include "env/jittypes.h"
#include "env/ClassTableCriticalSection.hpp"
#include "ilgen/IlGeneratorMethodDetails_inlines.hpp"
/* Hardware Profiling */
#if defined(TR_HOST_S390) && defined(BUILD_Z_RUNTIME_INSTRUMENTATION)
#include "z/runtime/ZHWProfiler.hpp"
#elif defined(TR_HOST_POWER)
#include "p/runtime/PPCHWProfiler.hpp"
#endif
#include "control/rossa.h"
#include "control/OptimizationPlan.hpp"
#include "control/CompilationController.hpp"
#include "runtime/IProfiler.hpp"
#define _UTE_STATIC_
#include "env/ut_j9jit.h"
#include "jitprotos.h"
#if defined(J9VM_OPT_SHARED_CLASSES)
#include "j9jitnls.h"
#endif
#include "env/J9SharedCache.hpp"
#ifdef J9VM_OPT_JAVA_CRYPTO_ACCELERATION
#include "runtime/Crypto.hpp"
#endif
#include "infra/Monitor.hpp"
#include "j9.h"
#include "j9cfg.h"
#include "vmaccess.h"
#include "jvminit.h"
#include "j9port.h"
#include "ras/DebugExt.hpp"
#include "env/exports.h"
#if defined(J9VM_OPT_JITSERVER)
#include "env/JITServerPersistentCHTable.hpp"
#include "net/CommunicationStream.hpp"
#include "net/ClientStream.hpp"
#include "net/LoadSSLLibs.hpp"
#include "runtime/JITClientSession.hpp"
#include "runtime/Listener.hpp"
#include "runtime/JITServerStatisticsThread.hpp"
#include "runtime/JITServerIProfiler.hpp"
#endif
extern "C" int32_t encodeCount(int32_t count);
#if defined(TR_HOST_POWER)
extern TR_Processor portLibCall_getProcessorType();
#endif
extern "C" {
struct J9RASdumpContext;
}
#if defined(TR_TARGET_X86) && defined(TR_HOST_32BIT)
extern TR_X86CPUIDBuffer *queryX86TargetCPUID(void * javaVM);
#endif
extern void setupCodeCacheParameters(int32_t *, OMR::CodeCacheCodeGenCallbacks *callBacks, int32_t *numHelpers, int32_t *CCPreLoadedCodeSize);
extern "C" void stopInterpreterProfiling(J9JITConfig *jitConfig);
extern "C" void restartInterpreterProfiling();
#ifdef J9VM_JIT_RUNTIME_INSTRUMENTATION
// extern until these functions are added to oti/jitprotos.h
extern "C" UDATA initializeJITRuntimeInstrumentation(J9JavaVM *vm);
#endif
extern void *ppcPicTrampInit(TR_FrontEnd *, TR::PersistentInfo *);
extern TR_Debug *createDebugObject(TR::Compilation *);
bool isQuickstart = false;
#define TRANSLATE_METHODHANDLE_TAKES_FLAGS
TR::Monitor *vpMonitor = 0;
char *compilationErrorNames[]={
"compilationOK", // 0
"compilationFailure", // 1
"compilationRestrictionILNodes", // 2
"compilationRestrictionRecDepth", // 3
"compilationRestrictedMethod", // 4
"compilationExcessiveComplexity", // 5
"compilationNotNeeded", // 6
"compilationSuspended", // 7
"compilationExcessiveSize", // 8
"compilationInterrupted", // 9
"compilationMetaDataFailure", //10
"compilationInProgress", //11
"compilationCHTableCommitFailure",//12
"compilationMaxCallerIndexExceeded",//13
"compilationKilledByClassReplacement",//14
"compilationHeapLimitExceeded", //15
"compilationNeededAtHigherLevel", //16
"compilationAotValidateFieldFailure", //17
"compilationAotStaticFieldReloFailure", //18
"compilationAotClassReloFailure", //19
"compilationAotThunkReloFailure", //20
"compilationAotTrampolineReloFailure", //21
"compilationAotPicTrampolineReloFailure", //22
"compilationAotCacheFullReloFailure", //23
"compilationAotUnknownReloTypeFailure", //24
"compilationCodeReservationFailure", //25
"compilationAotHasInvokehandle", //26
"compilationTrampolineFailure", //27
"compilationRecoverableTrampolineFailure", // 28
"compilationIlGenFailure", // 29
"compilationIllegalCodeCacheSwitch", // 30
"compilationNullSubstituteCodeCache", // 31
"compilationCodeMemoryExhausted", // 32
"compilationGCRPatchFailure", // 33
"compilationAotValidateMethodExitFailure", // 34
"compilationAotValidateMethodEnterFailure", // 35
"compilationAotArrayClassReloFailure", // 36
"compilationLambdaEnforceScorching", // 37
"compilationInternalPointerExceedLimit", // 38
"compilationAotRelocationInterrupted", // 39
"compilationAotClassChainPersistenceFailure", // 40
"compilationLowPhysicalMemory", // 41
"compilationDataCacheError", // 42
"compilationCodeCacheError", // 43
"compilationRecoverableCodeCacheError", // 44
"compilationAotHasInvokeVarHandle", //45
"compilationAotValidateStringCompressionFailure", // 46
"compilationFSDHasInvokeHandle", //47
"compilationVirtualAddressExhaustion", //48
"compilationEnforceProfiling", //49
"compilationSymbolValidationManagerFailure", //50
"compilationAOTNoSupportForAOTFailure", //51
"compilationAOTValidateTMFailure", //52
"compilationILGenUnsupportedValueTypeOperationFailure", //53
#if defined(J9VM_OPT_JITSERVER)
"compilationStreamFailure", //54
"compilationStreamLostMessage", // 55
"compilationStreamMessageTypeMismatch", // 56
"compilationStreamVersionIncompatible", // 57
"compilationStreamInterrupted", // 58
#endif /* defined(J9VM_OPT_JITSERVER) */
"compilationMaxError"
};
int32_t aggressiveOption = 0;
// Tells the sampler thread whether it is being interrupted to resume it or to
// shut it down.
//
volatile bool shutdownSamplerThread = false; // only set once
extern "C" void *compileMethodHandleThunk(j9object_t methodHandle, j9object_t arg, J9VMThread *vmThread, U_32 flags);
extern "C" J9NameAndSignature newInstancePrototypeNameAndSig;
extern "C" void getOutOfIdleStates(TR::CompilationInfo::TR_SamplerStates expectedState, TR::CompilationInfo *compInfo, const char* reason);
extern "C" IDATA
launchGPU(J9VMThread *vmThread, jobject invokeObject,
J9Method *method, int deviceId,
I_32 gridDimX, I_32 gridDimY, I_32 gridDimZ,
I_32 blockDimX, I_32 blockDimY, I_32 blockDimZ,
void **args);
extern "C" void promoteGPUCompile(J9VMThread *vmThread);
extern "C" int32_t setUpHooks(J9JavaVM * javaVM, J9JITConfig * jitConfig, TR_FrontEnd * vm);
extern "C" int32_t startJITServer(J9JITConfig *jitConfig);
extern "C" int32_t waitJITServerTermination(J9JITConfig *jitConfig);
char *AOTcgDiagOn="1";
// -----------------------------------------------------------------------------
// Method translation
// -----------------------------------------------------------------------------
extern "C" IDATA j9jit_testarossa(struct J9JITConfig * jitConfig, J9VMThread * vmThread, J9Method * method, void * oldStartPC)
{
return j9jit_testarossa_err(jitConfig, vmThread, method, oldStartPC, NULL);
}
extern "C" IDATA
j9jit_testarossa_err(
struct J9JITConfig *jitConfig,
J9VMThread *vmThread,
J9Method *method,
void *oldStartPC,
TR_CompilationErrorCode *compErrCode)
{
// The method is called by the interpreter when a method's invocation count has reached zero.
// Rather than just compiling blindly, pass the controller an event, and let it decide what to do.
//
bool queued = false;
TR_YesNoMaybe async = TR_maybe;
TR_MethodEvent event;
if (oldStartPC)
{
// any recompilation attempt using fixUpMethodCode would go here
J9::PrivateLinkage::LinkageInfo *linkageInfo = J9::PrivateLinkage::LinkageInfo::get(oldStartPC);
TR_PersistentJittedBodyInfo* jbi = TR::Recompilation::getJittedBodyInfoFromPC(oldStartPC);
if (jbi)
{
TR_PersistentMethodInfo *pmi = jbi->getMethodInfo();
if (pmi && pmi->hasBeenReplaced()) // HCR
{
// Obsolete method bodies are invalid.
//
TR::Recompilation::fixUpMethodCode(oldStartPC);
jbi->setIsInvalidated();
}
}
if (jbi && jbi->getIsInvalidated())
{
event._eventType = TR_MethodEvent::MethodBodyInvalidated;
async = TR_no;
}
else
{
// Async compilation is disabled or recompilations triggered from jitted code
//
// Check if the method has already been scheduled for compilation and return
// abruptly if so. This will reduce contention on the optimizationPlanMonitor
// when a profiled compilation is followed by a very slow recompilation
// (until the recompilation is over, the java threads will try to trigger
// recompilations again and again. See defect 193193)
//
if (linkageInfo->isBeingCompiled())
{
TR_J9VMBase *fe = TR_J9VMBase::get(jitConfig, vmThread);
if (fe->isAsyncCompilation())
return 0; // early return because the method is queued for compilation
}
// If PersistentJittedBody contains the profile Info and has BlockFrequencyInfo, it will set the
// isQueuedForRecompilation field which can be used by the jitted code at runtime to skip the profiling
// code if it has made request to recompile this method.
if (jbi && jbi->getProfileInfo() != NULL && jbi->getProfileInfo()->getBlockFrequencyInfo() != NULL)
jbi->getProfileInfo()->getBlockFrequencyInfo()->setIsQueuedForRecompilation();
event._eventType = TR_MethodEvent::OtherRecompilationTrigger;
}
}
else
{
event._eventType = TR_MethodEvent::InterpreterCounterTripped;
// Experimental code: user may want to artificially delay the compilation
// of methods to gather more IProfiler info
TR::CompilationInfo * compInfo = getCompilationInfo(jitConfig);
if (TR::Options::_compilationDelayTime > 0)
{
if (!TR::CompilationInfo::isJNINative(method))
{
if (compInfo->getPersistentInfo()->getElapsedTime() < 1000 * TR::Options::_compilationDelayTime)
{
// Add 2 to the invocationCount
int32_t count = TR::CompilationInfo::getInvocationCount(method);
if (count >= 0)
{
TR::CompilationInfo::setInvocationCount(method, 2);
return 0;
}
}
}
}
#if defined(J9VM_OPT_JITSERVER)
// Do not allow local compilations in JITServer server mode
if (compInfo->getPersistentInfo()->getRemoteCompilationMode() == JITServer::SERVER)
return 0;
#endif
}
event._j9method = method;
event._oldStartPC = oldStartPC;
event._vmThread = vmThread;
event._classNeedingThunk = 0;
bool newPlanCreated;
IDATA result = 0;
TR_OptimizationPlan *plan = TR::CompilationController::getCompilationStrategy()->processEvent(&event, &newPlanCreated);
// if the controller decides to compile this method, trigger the compilation
if (plan)
{
TR::CompilationInfo * compInfo = getCompilationInfo(jitConfig);
// Check to see if we need to wake up the sampling thread should it be in DEEPIDLE state
if (compInfo->getSamplerState() == TR::CompilationInfo::SAMPLER_DEEPIDLE &&
compInfo->_intervalStats._numFirstTimeCompilationsInInterval >= 1)
getOutOfIdleStates(TR::CompilationInfo::SAMPLER_DEEPIDLE, compInfo, "comp req");
else if (compInfo->getSamplerState() == TR::CompilationInfo::SAMPLER_IDLE &&
compInfo->_intervalStats._numFirstTimeCompilationsInInterval >= TR::Options::_numFirstTimeCompilationsToExitIdleMode)
getOutOfIdleStates(TR::CompilationInfo::SAMPLER_IDLE, compInfo, "comp req");
{ // scope for details
TR::IlGeneratorMethodDetails details(method);
result = (IDATA)compInfo->compileMethod(vmThread, details, oldStartPC, async, compErrCode, &queued, plan);
}
if (!queued && newPlanCreated)
TR_OptimizationPlan::freeOptimizationPlan(plan);
}
else // OOM; Very rare case
{
// Invalidation requests MUST not be ignored even if OOM
if (event._eventType == TR_MethodEvent::MethodBodyInvalidated)
{
// Allocate a plan on the stack and force a synchronous compilation
// so that we wait until the compilation finishes
TR_OptimizationPlan plan;
plan.init(noOpt); // use the cheapest compilation; It's unlikely the compilation will
// succeed because we are running low on native memory
plan.setIsStackAllocated(); // mark that this plan is not dynamically allocated
TR::CompilationInfo * compInfo = getCompilationInfo(jitConfig);
{ // scope for details
TR::IlGeneratorMethodDetails details(method);
result = (IDATA)compInfo->compileMethod(vmThread, details, oldStartPC, async, compErrCode, &queued, &plan);
}
// We should probably prevent any future non-essential compilation
compInfo->getPersistentInfo()->setDisableFurtherCompilation(true);
if (TR::Options::getCmdLineOptions()->getVerboseOption(TR_VerbosePerformance))
{
TR_VerboseLog::writeLineLocked(TR_Vlog_PERF,"t=%6u Disable further compilation due to OOM while creating an optimization plan", (uint32_t)compInfo->getPersistentInfo()->getElapsedTime());
}
}
}
return result;
}
extern "C" IDATA
retranslateWithPreparationForMethodRedefinition(
struct J9JITConfig *jitConfig,
J9VMThread *vmThread,
J9Method *method,
void *oldStartPC)
{
return retranslateWithPreparation(jitConfig, vmThread, method, oldStartPC, TR_PersistentMethodInfo::RecompDueToInlinedMethodRedefinition);
}
extern "C" IDATA
retranslateWithPreparation(
struct J9JITConfig *jitConfig,
J9VMThread *vmThread,
J9Method *method,
void *oldStartPC,
UDATA reason)
{
if (!TR::CompilationInfo::get()->asynchronousCompilation() && !J9::PrivateLinkage::LinkageInfo::get(oldStartPC)->recompilationAttempted())
{
TR::Recompilation::fixUpMethodCode(oldStartPC);
}
TR_PersistentJittedBodyInfo* jbi = TR::Recompilation::getJittedBodyInfoFromPC(oldStartPC);
if (jbi)
{
TR_PersistentMethodInfo *pmi = jbi->getMethodInfo();
if (pmi)
pmi->setReasonForRecompilation(reason);
}
return j9jit_testarossa(jitConfig, vmThread, method, oldStartPC);
}
extern "C" void *
old_translateMethodHandle(J9VMThread *currentThread, j9object_t methodHandle)
{
void *result = compileMethodHandleThunk(methodHandle, NULL, currentThread, 0);
if (result)
{
static char *returnNullFromTranslateMethodHandle = feGetEnv("TR_returnNullFromTranslateMethodHandle");
if (returnNullFromTranslateMethodHandle)
result = NULL;
}
return result;
}
extern "C" void *
translateMethodHandle(J9VMThread *currentThread, j9object_t methodHandle, j9object_t arg, U_32 flags)
{
void *result = compileMethodHandleThunk(methodHandle, arg, currentThread, flags);
if (result)
{
static char *returnNullFromTranslateMethodHandle = feGetEnv("TR_returnNullFromTranslateMethodHandle");
if (returnNullFromTranslateMethodHandle)
result = NULL;
}
return result;
}
// -----------------------------------------------------------------------------
// NewInstanceImpl Thunks
// -----------------------------------------------------------------------------
extern "C" J9Method *
getNewInstancePrototype(J9VMThread * context)
{
J9Method *newInstanceProto = 0;
J9InternalVMFunctions *intFunc = context->javaVM->internalVMFunctions;
J9Class * jlClass = intFunc->internalFindKnownClass(context, J9VMCONSTANTPOOL_JAVALANGCLASS, J9_FINDKNOWNCLASS_FLAG_EXISTING_ONLY);
if (jlClass)
{
newInstanceProto = (J9Method *) intFunc->javaLookupMethod(
context,
jlClass,
(J9ROMNameAndSignature *) &newInstancePrototypeNameAndSig,
0,
J9_LOOK_DIRECT_NAS | J9_LOOK_VIRTUAL | J9_LOOK_NO_JAVA);
}
return newInstanceProto;
}
extern "C" UDATA
j9jit_createNewInstanceThunk_err(
struct J9JITConfig *jitConfig,
J9VMThread *vmThread,
J9Class *classNeedingThunk,
TR_CompilationErrorCode *compErrCode)
{
TR::CompilationInfo * compInfo = getCompilationInfo(jitConfig);
J9Method *method = getNewInstancePrototype(vmThread);
if (!method)
{
*compErrCode = compilationFailure;
return 0;
}
#if defined(J9VM_OPT_JITSERVER)
// Do not allow local compilations in JITServer server mode
if (compInfo->getPersistentInfo()->getRemoteCompilationMode() == JITServer::SERVER)
return 0;
#endif
bool queued = false;
TR_MethodEvent event;
event._eventType = TR_MethodEvent::NewInstanceImpl;
event._j9method = method;
event._oldStartPC = 0;
event._vmThread = vmThread;
bool newPlanCreated;
TR_OptimizationPlan *plan = TR::CompilationController::getCompilationStrategy()->processEvent(&event, &newPlanCreated);
UDATA result = 0;
if (plan)
{
// if the controller decides to compile this method, trigger the compilation and wait here
{ // scope for details
J9::NewInstanceThunkDetails details(method, classNeedingThunk);
result = (UDATA)compInfo->compileMethod(vmThread, details, 0, TR_maybe, compErrCode, &queued, plan);
}
if (!queued && newPlanCreated)
TR_OptimizationPlan::freeOptimizationPlan(plan);
}
return result;
}
extern "C" UDATA
j9jit_createNewInstanceThunk(struct J9JITConfig * jitConfig, J9VMThread * vmThread, J9Class * classNeedingThunk)
{
return j9jit_createNewInstanceThunk_err(jitConfig, vmThread, classNeedingThunk, NULL);
}
// -----------------------------------------------------------------------------
// JIT shutdown
// -----------------------------------------------------------------------------
extern "C" void
stopSamplingThread(J9JITConfig * jitConfig)
{
// Was the samplerThread even created?
if (jitConfig->samplerThread)
{
// TODO: add a trace point in this routine
//Trc_JIT_stopSamplingThread_Entry();
TR::CompilationInfo *compInfo = getCompilationInfo(jitConfig);
j9thread_monitor_enter(jitConfig->samplerMonitor);
// In most cases the state of the sampling thread should be SAMPLE_THR_INITIALIZED
// However, if an early error happens, stage 15 might not be run (this is where we initialize
// the thread) and so the thread could be in ATTACHED_STATE
TR_ASSERT(compInfo->getSamplingThreadLifetimeState() == TR::CompilationInfo::SAMPLE_THR_INITIALIZED ||
compInfo->getSamplingThreadLifetimeState() == TR::CompilationInfo::SAMPLE_THR_ATTACHED,
"sampling thread must be initialized or at least attached if we try to stop it");
// inform samplerThread to exit its loop
shutdownSamplerThread = true;
compInfo->setSamplingThreadLifetimeState(TR::CompilationInfo::SAMPLE_THR_STOPPING);
// interrupt possible nap time for the samplerThread
j9thread_interrupt(jitConfig->samplerThread);
// Wait for samplerThread to exit
while (compInfo->getSamplingThreadLifetimeState() != TR::CompilationInfo::SAMPLE_THR_DESTROYED)
j9thread_monitor_wait(jitConfig->samplerMonitor);
// At this point samplingThread has gone away
compInfo->setSamplerThread(NULL);
jitConfig->samplerThread = 0; // just in case we enter this routine again
j9thread_monitor_exit(jitConfig->samplerMonitor);
// sampleMonitor is no longer needed
j9thread_monitor_destroy(jitConfig->samplerMonitor);
jitConfig->samplerMonitor = 0;
//Trc_JIT_stopSamplingThread_Exit();
}
}
extern "C" void
freeJITConfig(J9JITConfig * jitConfig)
{
// This method must be called only when we are sure that there are no other java threads running
if (jitConfig)
{
// Do all JIT compiler present freeing.
//
J9JavaVM * javaVM = jitConfig->javaVM;
PORT_ACCESS_FROM_JAVAVM(javaVM);
// stopSamplingThread(jitConfig); // done during JitShutdown below
jitConfig->runtimeFlags &= ~J9JIT_JIT_ATTACHED;
// If the jitConfig will be freed,
// there is no chance to do all te JIT cleanup.
// Do the JIT cleanup now, even if we tried it before
//
JitShutdown(jitConfig);
// free the compilation info before freeing the frontend without thread info (jitConfig->compilationInfo)
// which is done on codert_OnUnload
TR::CompilationInfo::freeCompilationInfo(jitConfig);
// Tell the runtime to unload.
//
codert_OnUnload(javaVM);
}
}
// exclusive shutdown. This normally occurs when System.exit() is called by
// the usercode. The VM needs to notify the compilation thread before going
// exclusive - otherwise we end up with a deadlock scenario upon exit
//
extern "C" void
jitExclusiveVMShutdownPending(J9VMThread * vmThread)
{
#ifndef SMALL_APPTHREAD
J9JavaVM *javaVM = vmThread->javaVM;
#if defined(J9VM_OPT_JITSERVER)
TR::CompilationInfo * compInfo = getCompilationInfo(javaVM->jitConfig);
if (compInfo->getPersistentInfo()->getRemoteCompilationMode() == JITServer::SERVER)
{
TR_Listener *listener = ((TR_JitPrivateConfig*)(javaVM->jitConfig->privateConfig))->listener;
if (listener)
{
listener->stop();
}
}
#endif /* defined(J9VM_OPT_JITSERVER) */
getCompilationInfo(javaVM->jitConfig)->stopCompilationThreads();
#endif
}
// Code cache callbacks to be used by the VM
//
extern "C" U_8*
getCodeCacheWarmAlloc(void *codeCache)
{
TR::CodeCache * cc = static_cast<TR::CodeCache*>(codeCache);
return cc->getWarmCodeAlloc();
}
extern "C" U_8*
getCodeCacheColdAlloc(void *codeCache)
{
TR::CodeCache * cc = static_cast<TR::CodeCache*>(codeCache);
return cc->getColdCodeAlloc();
}
// -----------------------------------------------------------------------------
// JIT control
// -----------------------------------------------------------------------------
// Temporarily disable the jit so that no more methods are compiled
extern "C" void
disableJit(J9JITConfig * jitConfig)
{
TR::CompilationInfo * compInfo = getCompilationInfo(jitConfig);
J9JavaVM * vm = jitConfig->javaVM;
if (compInfo && compInfo->getNumCompThreadsActive() > 0)
{
// Suspend compilation.
// This will also flush any methods waiting for compilation
//
compInfo->suspendCompilationThread();
// Generate a trace point
Trc_JIT_DisableJIT(vm->internalVMFunctions->currentVMThread(vm));
// Turn off interpreter profiling
//
#if defined(J9VM_INTERP_PROFILING_BYTECODES)
stopInterpreterProfiling(jitConfig);
#endif
j9thread_monitor_enter(vm->vmThreadListMutex);
// Set the sampling frequency to a high value - this will send the sampling
// thread to sleep for a long time. If the jit is enabled later we will have
// to interrupt the sampling thread to get it going again.
//
TR::CompilationInfo::TR_SamplerStates samplerState = compInfo->getSamplerState();
if (samplerState != TR::CompilationInfo::SAMPLER_NOT_INITIALIZED && //jitConfig->samplerThread && // Must have a sampler thread
samplerState != TR::CompilationInfo::SAMPLER_SUSPENDED && // Nothing to do if sampler is already suspended
samplerState != TR::CompilationInfo::SAMPLER_STOPPED)
{
TR::PersistentInfo *persistentInfo = compInfo->getPersistentInfo();
compInfo->setSamplerState(TR::CompilationInfo::SAMPLER_SUSPENDED);
jitConfig->samplingFrequency = MAX_SAMPLING_FREQUENCY;
persistentInfo->setLastTimeSamplerThreadWasSuspended(persistentInfo->getElapsedTime());
if (TR::Options::getVerboseOption(TR_VerbosePerformance))
{
TR_VerboseLog::writeLineLocked(TR_Vlog_PERF,"t=%u\tSampling thread suspended and changed frequency to %d ms",
persistentInfo->getElapsedTime(), jitConfig->samplingFrequency);
}
}
// TODO: what are the implications of remaining in an appropriate JIT state?
// Should we change the state to STEADY just to be on the safe side?
// What if this happens during startup? We will kill the startup time?
//set the countDelta
J9VMThread * currentThread = vm->mainThread;
do
{
currentThread->jitCountDelta = 0;
} while ((currentThread = currentThread->linkNext) != vm->mainThread);
j9thread_monitor_exit(vm->vmThreadListMutex);
}
}
// Re-enable the jit after it has been disabled.
extern "C" void
enableJit(J9JITConfig * jitConfig)
{
TR::CompilationInfo * compInfo = getCompilationInfo(jitConfig);
J9JavaVM * vm = jitConfig->javaVM;
if (compInfo && compInfo->getNumCompThreadsActive() == 0)
{
// Re-enable interpreter profiling if needed
//
#if defined(J9VM_INTERP_PROFILING_BYTECODES)
restartInterpreterProfiling();
#endif
// Resume compilation.
//
compInfo->resumeCompilationThread();
// Generate a trace point
Trc_JIT_EnableJIT(vm->internalVMFunctions->currentVMThread(vm));
j9thread_monitor_enter(vm->vmThreadListMutex);
// Set the sampling frequency back to its proper value and kick the
// sampler thread back into life.
//
TR::CompilationInfo::TR_SamplerStates samplerState = compInfo->getSamplerState();
if (samplerState == TR::CompilationInfo::SAMPLER_SUSPENDED) // Nothing to do if sampler is not suspended
{
TR::PersistentInfo *persistentInfo = compInfo->getPersistentInfo();
compInfo->setSamplerState(TR::CompilationInfo::SAMPLER_DEFAULT);
jitConfig->samplingFrequency = TR::Options::getCmdLineOptions()->getSamplingFrequency();
// this wake up call counts as a tick, so mark that we have seen ticks active
// so that we need to wait another 5 seconds to enter idle
persistentInfo->setLastTimeThreadsWereActive(persistentInfo->getElapsedTime());
j9thread_interrupt(jitConfig->samplerThread); // interrupt the sampler to look at its new state
if (TR::Options::getVerboseOption(TR_VerbosePerformance))
{
TR_VerboseLog::writeLineLocked(TR_Vlog_SAMPLING,"t=%u\tSampling thread interrupted and changed frequency to %d ms",
persistentInfo->getElapsedTime(), jitConfig->samplingFrequency);
}
}
// Set the countDelta
J9VMThread * currentThread = vm->mainThread;
do
{
currentThread->jitCountDelta = 2;
} while ((currentThread = currentThread->linkNext) != vm->mainThread);
j9thread_monitor_exit(vm->vmThreadListMutex);
}
} // enableJit
// -----------------------------------------------------------------------------
// Programmatic compile interface
// -----------------------------------------------------------------------------
extern "C" I_32
command(J9VMThread * vmThread, const char * cmdString)
{
TR::CompilationInfo * compInfo = TR::CompilationInfo::get();
if (strncmp(cmdString, "beginningOfStartup", 18) == 0)
{
TR::Options::getCmdLineOptions()->setOption(TR_AssumeStartupPhaseUntilToldNotTo); // let the JIT know it should wait for endOfStartup hint
if (compInfo)
{
TR::PersistentInfo *persistentInfo = compInfo->getPersistentInfo();
// If we trust the application completely, then set CLP right away
// Otherwise, let JIT heuristics decide at next decision point
if (TR::Options::getCmdLineOptions()->getOption(TR_UseStrictStartupHints))
persistentInfo->setClassLoadingPhase(true); // Enter CLP right away
if (TR::Options::isAnyVerboseOptionSet(TR_VerboseCLP, TR_VerbosePerformance))
{
TR_VerboseLog::writeLineLocked(TR_Vlog_INFO,"Compiler.command(beginningOfStartup)");
}
}
return 0;
}
if (strncmp(cmdString, "endOfStartup", 12) == 0)
{
if (TR::Options::getCmdLineOptions()->getOption(TR_AssumeStartupPhaseUntilToldNotTo)) // refuse to do anything if JIT option was not specified
{
if (compInfo)
{
TR::PersistentInfo *persistentInfo = compInfo->getPersistentInfo();
persistentInfo->setExternalStartupEndedSignal(true);
// If we trust the application completely, then set CLP right away
// Otherwise, let JIT heuristics decide at next decision point
if (TR::Options::getCmdLineOptions()->getOption(TR_UseStrictStartupHints))
persistentInfo->setClassLoadingPhase(false);
if (TR::Options::isAnyVerboseOptionSet(TR_VerboseCLP, TR_VerbosePerformance))
{
TR_VerboseLog::writeLineLocked(TR_Vlog_INFO,"Compiler.command(endOfStartup)");
}
}
}
return 0;
}
return 0;
}
static IDATA
internalCompileClass(J9VMThread * vmThread, J9Class * clazz)
{
J9JavaVM * javaVM = vmThread->javaVM;
J9JITConfig * jitConfg = javaVM->jitConfig;
TR::CompilationInfo * compInfo = getCompilationInfo(jitConfig);
TR_J9VMBase *fe = TR_J9VMBase::get(jitConfg, NULL);
// To prevent class unloading we need VM access
bool threadHadNoVMAccess = (!(vmThread->publicFlags & J9_PUBLIC_FLAGS_VM_ACCESS));
if (threadHadNoVMAccess)
acquireVMAccess(vmThread);
J9Method * newInstanceThunk = getNewInstancePrototype(vmThread);
J9ROMMethod * romMethod = (J9ROMMethod *) J9ROMCLASS_ROMMETHODS(clazz->romClass);
J9Method * ramMethods = (J9Method *) (clazz->ramMethods);
for (uint32_t m = 0; m < clazz->romClass->romMethodCount; m++)
{
J9Method * method = &ramMethods[m];
if (!(romMethod->modifiers & (J9AccNative | J9AccAbstract))
&& method != newInstanceThunk
&& !TR::CompilationInfo::isCompiled(method)
&& !fe->isThunkArchetype(method))
{
bool queued = false;
TR_MethodEvent event;
event._eventType = TR_MethodEvent::InterpreterCounterTripped;
event._j9method = method;
event._oldStartPC = 0;
event._vmThread = vmThread;
event._classNeedingThunk = 0;
bool newPlanCreated;
TR_OptimizationPlan *plan = TR::CompilationController::getCompilationStrategy()->processEvent(&event, &newPlanCreated);
if (plan)
{
plan->setIsExplicitCompilation(true);
// If the controller decides to compile this method, trigger the compilation and wait here
{ // scope for details
TR::IlGeneratorMethodDetails details(method);
compInfo->compileMethod(vmThread, details, 0, TR_no, NULL, &queued, plan);
}
if (!queued && newPlanCreated)
TR_OptimizationPlan::freeOptimizationPlan(plan);
}
else // No memory to create an optimizationPlan
{
// There is no point to try to compile other methods if we cannot
// create an optimization plan. Bail out
break;
}
}
romMethod = nextROMMethod(romMethod);
}
if (threadHadNoVMAccess)
releaseVMAccess(vmThread);
return 1;
}
extern "C" IDATA
compileClass(J9VMThread * vmThread, jclass clazzParm)
{
J9JavaVM * javaVM = vmThread->javaVM;
J9Class * clazz;
IDATA rc;
acquireVMAccess(vmThread);
clazz = J9VM_J9CLASS_FROM_JCLASS(vmThread, clazzParm);
rc = internalCompileClass(vmThread, clazz);
releaseVMAccess(vmThread);
return rc;
}
extern "C" IDATA
compileClasses(J9VMThread * vmThread, const char * pattern)
{
IDATA foundClassToCompile = 0;
J9JavaVM * javaVM = vmThread->javaVM;
J9JITConfig * jitConfig = javaVM->jitConfig;
TR_FrontEnd * vm = TR_J9VMBase::get(jitConfig, vmThread);
TR::CompilationInfo * compInfo = TR::CompilationInfo::get(jitConfig);
if (!compInfo)
return foundClassToCompile;
PORT_ACCESS_FROM_JAVAVM(javaVM);
J9ClassWalkState classWalkState;
#define PATTERN_BUFFER_LENGTH 256
char patternBuffer[PATTERN_BUFFER_LENGTH];
char * patternString = patternBuffer;
int32_t patternLength = strlen(pattern);
bool freePatternString = false;
if (patternLength >= PATTERN_BUFFER_LENGTH)
{
patternString = (char*)j9mem_allocate_memory((patternLength+1)*sizeof(char), J9MEM_CATEGORY_JIT);
if (!patternString)
return false;
freePatternString = true;
}
#undef PATTERN_BUFFER_LENGTH
strncpy(patternString, (char*)pattern, patternLength);
/* Slashify the className */
for (int32_t i = 0; i < patternLength; ++i)
if (patternString[i] == '.')
patternString[i] = '/';
patternString[patternLength]='\0';
bool threadHadNoVMAccess = (!(vmThread->publicFlags & J9_PUBLIC_FLAGS_VM_ACCESS));
if (threadHadNoVMAccess)
acquireVMAccess(vmThread);
J9Class * clazz = javaVM->internalVMFunctions->allLiveClassesStartDo(&classWalkState, javaVM, NULL);
TR_LinkHead0<TR_ClassHolder> *classList = compInfo->getListOfClassesToCompile();
bool classListWasEmpty = classList ? false : true;
bool abortFlag = false;
while (clazz && !abortFlag)
{
if (!J9ROMCLASS_IS_PRIMITIVE_OR_ARRAY(clazz->romClass))
{
J9UTF8 * clazzUTRF8 = J9ROMCLASS_CLASSNAME(clazz->romClass);
// j9tty_printf(PORTLIB, "Class %.*s\n", J9UTF8_LENGTH(clazz), J9UTF8_DATA(clazz));
#define CLASSNAME_BUFFER_LENGTH 1000
char classNameBuffer[CLASSNAME_BUFFER_LENGTH];
char * classNameString = classNameBuffer;
bool freeClassNameString = false;
if (J9UTF8_LENGTH(clazzUTRF8) >= CLASSNAME_BUFFER_LENGTH)
{
classNameString = (char*)j9mem_allocate_memory((J9UTF8_LENGTH(clazzUTRF8)+1)*sizeof(char), J9MEM_CATEGORY_JIT);
if (!classNameString)
{
clazz = javaVM->internalVMFunctions->allLiveClassesNextDo(&classWalkState);
continue;
}
freeClassNameString = true;
}
#undef CLASSNAME_BUFFER_LENGTH
strncpy(classNameString, (char*)J9UTF8_DATA(clazzUTRF8), J9UTF8_LENGTH(clazzUTRF8));
if (strstr(classNameString, patternString))
{
TR_ClassHolder * c = NULL;
if (!classListWasEmpty) // If the list was not empty we must search for duplicates
{
for (c = classList->getFirst(); c; c = c->getNext())
if (c->getClass() == clazz)
break; // duplicate found
}
if (!c) // no duplicate found
{
TR_ClassHolder *ch = new (PERSISTENT_NEW) TR_ClassHolder(clazz);
if (ch)
{
classList->add(ch);
foundClassToCompile = 1;
}