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JITClientCompilationThread.cpp
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/*******************************************************************************
* Copyright IBM Corp. and others 2019
*
* 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] https://openjdk.org/legal/assembly-exception.html
*
* SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-exception-2.0 OR GPL-2.0-only WITH OpenJDK-assembly-exception-1.0
*******************************************************************************/
#include "j9cfg.h"
#include "jitprotos.h"
#include "vmaccess.h"
#include "codegen/CodeGenerator.hpp"
#include "codegen/PicHelpers.hpp"
#include "control/CompilationRuntime.hpp"
#include "control/CompilationThread.hpp"
#include "control/JITServerHelpers.hpp"
#include "control/MethodToBeCompiled.hpp"
#include "env/ClassTableCriticalSection.hpp"
#include "env/J2IThunk.hpp"
#include "env/j9methodServer.hpp"
#include "env/JITServerPersistentCHTable.hpp"
#include "env/JSR292Methods.h"
#include "env/TypeLayout.hpp"
#include "env/ut_j9jit.h"
#include "env/VerboseLog.hpp"
#include "env/VMAccessCriticalSection.hpp"
#include "env/VMJ9.h"
#include "net/ClientStream.hpp"
#include "optimizer/TransformUtil.hpp"
#include "runtime/CodeCache.hpp"
#include "runtime/CodeCacheExceptions.hpp"
#include "runtime/CodeCacheManager.hpp"
#include "runtime/J9VMAccess.hpp"
#include "runtime/JITClientSession.hpp"
#include "runtime/JITServerAOTDeserializer.hpp"
#include "runtime/JITServerIProfiler.hpp"
#include "runtime/RelocationTarget.hpp"
extern TR::Monitor *assumptionTableMutex;
// TODO: This method is copied from runtime/jit_vm/ctsupport.c,
// in the future it's probably better to make that method publicly accessible
static UDATA
findField(J9VMThread *vmStruct, J9ConstantPool *constantPool, UDATA index, BOOLEAN isStatic, J9Class **declaringClass)
{
J9JavaVM *javaVM = vmStruct->javaVM;
J9ROMFieldRef *romRef;
J9ROMClassRef *classRef; /* ROM class of the field */
U_32 classRefCPIndex;
J9UTF8 *classNameUTF;
J9Class *clazz;
UDATA result = 0;
*declaringClass = NULL;
romRef = (J9ROMFieldRef*) &(((J9ROMConstantPoolItem*) constantPool->romConstantPool)[index]);
classRefCPIndex = romRef->classRefCPIndex;
classRef = (J9ROMClassRef*) &(((J9ROMConstantPoolItem*) constantPool->romConstantPool)[classRefCPIndex]);
classNameUTF = J9ROMCLASSREF_NAME(classRef);
clazz = javaVM->internalVMFunctions->internalFindClassUTF8(vmStruct, J9UTF8_DATA(classNameUTF),
J9UTF8_LENGTH(classNameUTF), constantPool->ramClass->classLoader, J9_FINDCLASS_FLAG_EXISTING_ONLY);
if (NULL != clazz)
{
J9ROMNameAndSignature *nameAndSig = J9ROMFIELDREF_NAMEANDSIGNATURE(romRef);
J9UTF8 *signature = J9ROMNAMEANDSIGNATURE_SIGNATURE(nameAndSig);
J9UTF8 *name = J9ROMNAMEANDSIGNATURE_NAME(nameAndSig);
if (!isStatic)
{
UDATA instanceField;
IDATA offset = javaVM->internalVMFunctions->instanceFieldOffset(
vmStruct, clazz, J9UTF8_DATA(name),
J9UTF8_LENGTH(name), J9UTF8_DATA(signature), J9UTF8_LENGTH(signature), declaringClass,
&instanceField, J9_LOOK_NO_JAVA);
if (-1 != offset)
{
result = instanceField;
}
}
else
{
UDATA staticField;
void * addr = javaVM->internalVMFunctions->staticFieldAddress(
vmStruct, clazz, J9UTF8_DATA(name),
J9UTF8_LENGTH(name), J9UTF8_DATA(signature), J9UTF8_LENGTH(signature), declaringClass,
&staticField, J9_LOOK_NO_JAVA, NULL);
if (NULL != addr)
{
result = staticField;
}
}
}
return result;
}
static void
handler_IProfiler_profilingSample(JITServer::ClientStream *client, TR_J9VM *fe, TR::Compilation *comp)
{
auto recv = client->getRecvData<TR_OpaqueMethodBlock*, uint32_t, uintptr_t>();
auto method = std::get<0>(recv);
auto bcIndex = std::get<1>(recv);
auto data = std::get<2>(recv); // data==1 means 'send info for 1 bytecode'; data==0 means 'send info for entire method if possible'
JITClientIProfiler *iProfiler = (JITClientIProfiler *)fe->getIProfiler();
bool isCompiled = TR::CompilationInfo::isCompiled((J9Method*)method);
bool isInProgress = comp->getMethodBeingCompiled()->getPersistentIdentifier() == method;
bool abort = false;
// Used to tell the server if a profiled entry should be stored in persistent or heap memory
bool usePersistentCache = isCompiled || isInProgress;
bool wholeMethodInfo = data == 0;
if (wholeMethodInfo)
{
// Serialize all the information related to this method
abort = iProfiler->serializeAndSendIProfileInfoForMethod(method, comp, client, usePersistentCache, isCompiled);
}
if (!wholeMethodInfo || abort) // Send information just for this entry
{
auto entry = iProfiler->profilingSample(method, bcIndex, comp, data, false);
if (entry && !entry->isInvalid())
{
uint32_t canPersist = entry->canBeSerialized(comp->getPersistentInfo()); // This may lock the entry
if (canPersist == IPBC_ENTRY_CAN_PERSIST)
{
uint32_t bytes = entry->getBytesFootprint();
std::string entryBytes(bytes, '\0');
auto storage = (TR_IPBCDataStorageHeader*)&entryBytes[0];
uintptr_t methodStartAddress = (uintptr_t)TR::Compiler->mtd.bytecodeStart(method);
entry->serialize(methodStartAddress, storage, comp->getPersistentInfo());
client->write(JITServer::MessageType::IProfiler_profilingSample, entryBytes, false, usePersistentCache, isCompiled);
}
else
{
client->write(JITServer::MessageType::IProfiler_profilingSample, std::string(), false, usePersistentCache, isCompiled);
}
// Unlock the entry
if (auto callGraphEntry = entry->asIPBCDataCallGraph())
if (canPersist != IPBC_ENTRY_PERSIST_LOCK && callGraphEntry->isLocked())
callGraphEntry->releaseEntry();
}
else // No valid info for specified bytecode index
{
client->write(JITServer::MessageType::IProfiler_profilingSample, std::string(), false, usePersistentCache, isCompiled);
}
}
}
static bool
handleServerMessage(JITServer::ClientStream *client, TR_J9VM *fe, JITServer::MessageType &response)
{
using JITServer::MessageType;
TR::CompilationInfoPerThread *compInfoPT = fe->_compInfoPT;
J9VMThread *vmThread = compInfoPT->getCompilationThread();
TR_Memory *trMemory = compInfoPT->getCompilation()->trMemory();
TR::Compilation *comp = compInfoPT->getCompilation();
TR::CompilationInfo *compInfo = compInfoPT->getCompilationInfo();
TR_ASSERT(TR::MonitorTable::get()->getClassUnloadMonitorHoldCount(compInfoPT->getCompThreadId()) == 0, "Must not hold classUnloadMonitor");
TR::MonitorTable *table = TR::MonitorTable::get();
TR_ASSERT(table && table->isThreadInSafeMonitorState(vmThread), "Must not hold any monitors when waiting for server");
response = client->read();
// Acquire VM access and check for possible class unloading
acquireVMAccessNoSuspend(vmThread);
// If JVM has unloaded classes inform the server to abort this compilation
uint8_t interruptReason = compInfoPT->compilationShouldBeInterrupted();
if (interruptReason && response != MessageType::jitDumpPrintIL)
{
// Inform the server if compilation is not yet complete
if ((response != MessageType::compilationCode) &&
(response != MessageType::compilationFailure))
client->writeError(JITServer::MessageType::compilationInterrupted, 0 /* placeholder */);
if (TR::Options::isAnyVerboseOptionSet(TR_VerboseJITServer, TR_VerboseCompilationDispatch))
TR_VerboseLog::writeLineLocked(TR_Vlog_FAILURE, "Interrupting remote compilation (interruptReason %u) in handleServerMessage(%s) for %s @ %s",
interruptReason, JITServer::messageNames[response], comp->signature(), comp->getHotnessName());
Trc_JITServerInterruptRemoteCompile(vmThread, interruptReason, JITServer::messageNames[response], comp->signature(), comp->getHotnessName());
comp->failCompilation<TR::CompilationInterrupted>("Compilation interrupted in handleServerMessage");
}
TR::KnownObjectTable *knot = comp->getOrCreateKnownObjectTable();
bool done = false;
switch (response)
{
case MessageType::compilationCode:
case MessageType::compilationFailure:
case MessageType::AOTCache_serializedAOTMethod:
case MessageType::compilationThreadCrashed:
done = true;
break;
case MessageType::jitDumpPrintIL:
{
client->getRecvData<JITServer::Void>();
done = true;
client->write(response, JITServer::Void());
}
break;
case MessageType::getUnloadedClassRangesAndCHTable:
{
uint64_t serverUID = std::get<0>(client->getRecvData<uint64_t>());
uint64_t previousUID = compInfo->getPersistentInfo()->getServerUID();
compInfo->getPersistentInfo()->setServerUID(serverUID);
auto unloadedClasses = comp->getPersistentInfo()->getUnloadedClassAddresses();
std::vector<TR_AddressRange> ranges;
ranges.reserve(unloadedClasses->getNumberOfRanges());
{
OMR::CriticalSection getAddressSetRanges(assumptionTableMutex);
unloadedClasses->getRanges(ranges);
}
// Add the entire CHTable as well
auto table = (JITClientPersistentCHTable *)comp->getPersistentInfo()->getPersistentCHTable();
std::string serializedCHTable = FlatPersistentClassInfo::serializeHierarchy(table);
{
OMR::CriticalSection romClassCache(compInfo->getclassesCachedAtServerMonitor());
compInfo->getclassesCachedAtServer().clear();
}
auto deserializer = compInfo->getJITServerAOTDeserializer();
// Reset AOT deserializer if connected to a new server (cached serialization records are now invalid)
if (deserializer && (previousUID != serverUID))
deserializer->reset();
client->write(response, ranges, unloadedClasses->getMaxRanges(), serializedCHTable);
if ((previousUID != serverUID) && TR::Options::getVerboseOption(TR_VerboseJITServerConns))
{
TR_VerboseLog::writeLineLocked(TR_Vlog_JITServer, "t=%6u Connected to a server (serverUID=%llu)",
(uint32_t)compInfo->getPersistentInfo()->getElapsedTime(),
(unsigned long long)serverUID);
}
}
break;
case MessageType::VM_isClassLibraryClass:
{
bool rv = fe->isClassLibraryClass(std::get<0>(client->getRecvData<TR_OpaqueClassBlock*>()));
client->write(response, rv);
}
break;
case MessageType::VM_isClassLibraryMethod:
{
auto tup = client->getRecvData<TR_OpaqueMethodBlock*, bool>();
bool rv = fe->isClassLibraryMethod(std::get<0>(tup), std::get<1>(tup));
client->write(response, rv);
}
break;
case MessageType::VM_getSystemClassFromClassName:
{
auto recv = client->getRecvData<std::string, bool>();
auto &name = std::get<0>(recv);
bool isVettedForAOT = std::get<1>(recv);
// Always need non-AOT front-end here, since class validation is done on the server
TR_J9VMBase *fej9 = TR_J9VMBase::get(vmThread->javaVM->jitConfig, vmThread);
client->write(response, fej9->getSystemClassFromClassName(name.data(), name.length(), isVettedForAOT));
}
break;
case MessageType::VM_isMethodTracingEnabled:
{
auto method = std::get<0>(client->getRecvData<TR_OpaqueMethodBlock *>());
client->write(response, fe->isMethodTracingEnabled(method));
}
break;
case MessageType::VM_getClassClassPointer:
{
auto clazz = std::get<0>(client->getRecvData<TR_OpaqueClassBlock*>());
client->write(response, fe->getClassClassPointer(clazz));
}
break;
case MessageType::VM_getClassOfMethod:
{
auto method = std::get<0>(client->getRecvData<TR_OpaqueMethodBlock*>());
client->write(response, fe->getClassOfMethod(method));
}
break;
case MessageType::VM_getClassFromSignature:
{
// Need to get a non-AOT frontend because the AOT frontend also
// performs some class validation which we want to do at the server
TR_J9VMBase *fej9 = TR_J9VMBase::get(vmThread->javaVM->jitConfig, vmThread);
auto recv = client->getRecvData<std::string, TR_OpaqueMethodBlock *, bool>();
auto &sig = std::get<0>(recv);
auto method = std::get<1>(recv);
bool isVettedForAOT = std::get<2>(recv);
auto clazz = fej9->getClassFromSignature(sig.data(), sig.length(), method, isVettedForAOT);
J9ClassLoader *cl = clazz ? reinterpret_cast<J9ClassLoader *>(fej9->getClassLoader(clazz)) : NULL;
J9ClassLoader *methodCL = reinterpret_cast<J9ClassLoader *>(fej9->getClassLoader(fej9->getClassOfMethod(method)));
client->write(response, clazz, cl, methodCL);
}
break;
case MessageType::VM_jitFieldsOrStaticsAreSame:
{
auto recv = client->getRecvData<TR_ResolvedMethod*, int32_t, TR_ResolvedMethod *, int32_t, int32_t>();
TR_ResolvedMethod *method1 = std::get<0>(recv);
int32_t cpIndex1 = std::get<1>(recv);
TR_ResolvedMethod *method2 = std::get<2>(recv);
int32_t cpIndex2 = std::get<3>(recv);
int32_t isStatic = std::get<4>(recv);
bool identical = false;
UDATA f1 = 0, f2 = 0;
J9Class *declaringClass1 = NULL, *declaringClass2 = NULL;
J9ConstantPool *cp1 = (J9ConstantPool *) method1->ramConstantPool();
J9ConstantPool *cp2 = (J9ConstantPool *) method2->ramConstantPool();
f1 = findField(fe->vmThread(), cp1, cpIndex1, isStatic, &declaringClass1);
f2 = findField(fe->vmThread(), cp2, cpIndex2, isStatic, &declaringClass2);
client->write(response, declaringClass1, declaringClass2, f1, f2);
};
break;
case MessageType::VM_compiledAsDLTBefore:
{
auto clazz = std::get<0>(client->getRecvData<TR_ResolvedMethod *>());
client->write(response, fe->compiledAsDLTBefore(clazz));
}
break;
case MessageType::VM_classHasBeenExtended:
{
auto clazz = std::get<0>(client->getRecvData<TR_OpaqueClassBlock *>());
client->write(response, fe->classHasBeenExtended(clazz));
}
break;
case MessageType::VM_isThunkArchetype:
{
J9Method *method = std::get<0>(client->getRecvData<J9Method *>());
client->write(response, fe->isThunkArchetype(method));
}
break;
case MessageType::VM_printTruncatedSignature:
{
J9Method *method = (J9Method *) std::get<0>(client->getRecvData<TR_OpaqueMethodBlock *>());
J9UTF8 * className;
J9UTF8 * name;
J9UTF8 * signature;
getClassNameSignatureFromMethod(method, className, name, signature);
std::string classNameStr(utf8Data(className), J9UTF8_LENGTH(className));
std::string nameStr(utf8Data(name), J9UTF8_LENGTH(name));
std::string signatureStr(utf8Data(signature), J9UTF8_LENGTH(signature));
client->write(response, classNameStr, nameStr, signatureStr);
}
break;
case MessageType::VM_getStaticHookAddress:
{
int32_t event = std::get<0>(client->getRecvData<int32_t>());
client->write(response, fe->getStaticHookAddress(event));
}
break;
case MessageType::VM_isClassInitialized:
{
TR_OpaqueClassBlock *clazz = std::get<0>(client->getRecvData<TR_OpaqueClassBlock *>());
client->write(response, fe->isClassInitialized(clazz));
}
break;
case MessageType::VM_getOSRFrameSizeInBytes:
{
TR_OpaqueMethodBlock *method = std::get<0>(client->getRecvData<TR_OpaqueMethodBlock *>());
client->write(response, fe->getOSRFrameSizeInBytes(method));
}
break;
case MessageType::VM_getInitialLockword:
{
TR_OpaqueClassBlock *clazz = std::get<0>(client->getRecvData<TR_OpaqueClassBlock *>());
client->write(response, fe->getInitialLockword(clazz));
}
break;
case MessageType::VM_JavaStringObject:
{
client->getRecvData<JITServer::Void>();
client->write(response, (TR_OpaqueClassBlock *)J9VMJAVALANGSTRING(vmThread->javaVM));
}
break;
case MessageType::VM_getMethods:
{
TR_OpaqueClassBlock *clazz = std::get<0>(client->getRecvData<TR_OpaqueClassBlock *>());
client->write(response, fe->getMethods(clazz));
}
break;
case MessageType::VM_getResolvedMethodsAndMirror:
{
TR_OpaqueClassBlock *clazz = std::get<0>(client->getRecvData<TR_OpaqueClassBlock *>());
uint32_t numMethods = fe->getNumMethods(clazz);
J9Method *methods = (J9Method *) fe->getMethods(clazz);
// Create mirrors and put methodInfo for each method in a vector to be sent to the server
std::vector<TR_ResolvedJ9JITServerMethodInfo> methodsInfo;
methodsInfo.reserve(numMethods);
for (int i = 0; i < numMethods; ++i)
{
TR_ResolvedJ9JITServerMethodInfo methodInfo;
TR_ResolvedJ9JITServerMethod::createResolvedMethodMirror(methodInfo, (TR_OpaqueMethodBlock *) &(methods[i]), 0, 0, fe, trMemory);
methodsInfo.push_back(methodInfo);
}
client->write(response, methods, methodsInfo);
}
break;
case MessageType::VM_getVMInfo:
{
ClientSessionData::VMInfo vmInfo = {};
J9JavaVM * javaVM = vmThread->javaVM;
vmInfo._systemClassLoader = fe->getSystemClassLoader();
vmInfo._processID = fe->getProcessID();
vmInfo._canMethodEnterEventBeHooked = fe->canMethodEnterEventBeHooked();
vmInfo._canMethodExitEventBeHooked = fe->canMethodExitEventBeHooked();
vmInfo._canExceptionEventBeHooked = fe->canExceptionEventBeHooked();
vmInfo._usesDiscontiguousArraylets = TR::Compiler->om.usesDiscontiguousArraylets();
vmInfo._isIProfilerEnabled = fe->getIProfiler();
vmInfo._arrayletLeafLogSize = TR::Compiler->om.arrayletLeafLogSize();
vmInfo._arrayletLeafSize = TR::Compiler->om.arrayletLeafSize();
vmInfo._overflowSafeAllocSize = static_cast<uint64_t>(fe->getOverflowSafeAllocSize());
vmInfo._compressedReferenceShift = TR::Compiler->om.compressedReferenceShift();
vmInfo._j9SharedClassCacheDescriptorList = NULL;
vmInfo._stringCompressionEnabled = fe->isStringCompressionEnabledVM();
vmInfo._hasSharedClassCache = TR::Options::sharedClassCache();
vmInfo._elgibleForPersistIprofileInfo = vmInfo._isIProfilerEnabled ? fe->getIProfiler()->elgibleForPersistIprofileInfo(comp) : false;
vmInfo._reportByteCodeInfoAtCatchBlock = comp->getOptions()->getReportByteCodeInfoAtCatchBlock();
for (int32_t i = 0; i <= 7; i++)
{
vmInfo._arrayTypeClasses[i] = fe->getClassFromNewArrayTypeNonNull(i + 4);
}
vmInfo._byteArrayClass = fe->getByteArrayClass();
vmInfo._isIndexableDataAddrPresent = TR::Compiler->om.isIndexableDataAddrPresent();
vmInfo._contiguousIndexableHeaderSize = TR::Compiler->om.contiguousArrayHeaderSizeInBytes();
vmInfo._discontiguousIndexableHeaderSize = TR::Compiler->om.discontiguousArrayHeaderSizeInBytes();
vmInfo._readBarrierType = TR::Compiler->om.readBarrierType();
vmInfo._writeBarrierType = TR::Compiler->om.writeBarrierType();
vmInfo._compressObjectReferences = TR::Compiler->om.compressObjectReferences();
vmInfo._processorDescription = TR::Compiler->target.cpu.getProcessorDescription();
vmInfo._noTypeInvokeExactThunkHelper = comp->getSymRefTab()->findOrCreateRuntimeHelper(TR_icallVMprJavaSendInvokeExact0)->getMethodAddress();
vmInfo._int64InvokeExactThunkHelper = comp->getSymRefTab()->findOrCreateRuntimeHelper(TR_icallVMprJavaSendInvokeExactJ)->getMethodAddress();
vmInfo._int32InvokeExactThunkHelper = comp->getSymRefTab()->findOrCreateRuntimeHelper(TR_icallVMprJavaSendInvokeExact1)->getMethodAddress();
vmInfo._addressInvokeExactThunkHelper = comp->getSymRefTab()->findOrCreateRuntimeHelper(TR_icallVMprJavaSendInvokeExactL)->getMethodAddress();
vmInfo._floatInvokeExactThunkHelper = comp->getSymRefTab()->findOrCreateRuntimeHelper(TR_icallVMprJavaSendInvokeExactF)->getMethodAddress();
vmInfo._doubleInvokeExactThunkHelper = comp->getSymRefTab()->findOrCreateRuntimeHelper(TR_icallVMprJavaSendInvokeExactD)->getMethodAddress();
vmInfo._interpreterVTableOffset = TR::Compiler->vm.getInterpreterVTableOffset();
vmInfo._maxHeapSizeInBytes = TR::Compiler->vm.maxHeapSizeInBytes();
vmInfo._enableGlobalLockReservation = vmThread->javaVM->enableGlobalLockReservation;
fe->getNurserySpaceBounds(&vmInfo._nurserySpaceBoundsBase, &vmInfo._nurserySpaceBoundsTop);
vmInfo._lowTenureAddress = fe->getLowTenureAddress();
vmInfo._highTenureAddress = fe->getHighTenureAddress();
{
TR::VMAccessCriticalSection getVMInfo(fe);
vmInfo._jlrMethodInvoke = javaVM->jlrMethodInvoke;
#if defined(J9VM_OPT_SIDECAR)
if (javaVM->srMethodAccessor != NULL)
vmInfo._srMethodAccessorClass = (TR_OpaqueClassBlock *) J9VM_J9CLASS_FROM_JCLASS(vmThread, javaVM->srMethodAccessor);
else
vmInfo._srMethodAccessorClass = NULL;
if (javaVM->srConstructorAccessor != NULL)
vmInfo._srConstructorAccessorClass = (TR_OpaqueClassBlock *) J9VM_J9CLASS_FROM_JCLASS(vmThread, javaVM->srConstructorAccessor);
else
vmInfo._srConstructorAccessorClass = NULL;
#endif // J9VM_OPT_SIDECAR
vmInfo._extendedRuntimeFlags2 = javaVM->extendedRuntimeFlags2;
#if defined(J9VM_OPT_OPENJDK_METHODHANDLE)
// These offsets are initialized later on
vmInfo._vmtargetOffset = 0;
vmInfo._vmindexOffset = 0;
#endif /* defined(J9VM_OPT_OPENJDK_METHODHANDLE) */
}
// For multi-layered SCC support
std::vector<ClientSessionData::CacheDescriptor> listOfCacheDescriptors;
if (fe->sharedCache() && fe->sharedCache()->getCacheDescriptorList())
{
// The cache descriptor list is linked last to first and is circular, so last->previous == first.
J9SharedClassCacheDescriptor *head = fe->sharedCache()->getCacheDescriptorList();
J9SharedClassCacheDescriptor *curCache = head;
do
{
ClientSessionData::CacheDescriptor cacheDesc =
{
(uintptr_t)curCache->cacheStartAddress,
curCache->cacheSizeBytes,
(uintptr_t)curCache->romclassStartAddress,
(uintptr_t)curCache->metadataStartAddress
};
listOfCacheDescriptors.push_back(cacheDesc);
curCache = curCache->next;
}
while (curCache != head);
}
#if defined(TR_HOST_POWER)
for (int32_t i = 0; i < TR_numRuntimeHelpers; ++i)
vmInfo._helperAddresses[i] = runtimeHelperValue((TR_RuntimeHelper) i);
#endif
vmInfo._isHotReferenceFieldRequired = TR::Compiler->om.isHotReferenceFieldRequired();
vmInfo._osrGlobalBufferSize = javaVM->osrGlobalBufferSize;
vmInfo._needsMethodTrampolines = TR::CodeCacheManager::instance()->codeCacheConfig().needsMethodTrampolines();
vmInfo._objectAlignmentInBytes = TR::Compiler->om.objectAlignmentInBytes();
vmInfo._isGetImplAndRefersToInliningSupported = fe->isGetImplAndRefersToInliningSupported();
vmInfo._isAllocateZeroedTLHPagesEnabled = fe->tlhHasBeenCleared();
vmInfo._staticObjectAllocateFlags = fe->getStaticObjectFlags();
vmInfo._referenceArrayCopyHelperAddress = fe->getReferenceArrayCopyHelperAddress();
vmInfo._JavaLangObject = (TR_OpaqueClassBlock*)J9VMJAVALANGOBJECT(vmThread->javaVM);
vmInfo._JavaStringObject = (TR_OpaqueClassBlock*)J9VMJAVALANGSTRING(vmThread->javaVM);
vmInfo._useAOTCache = comp->getPersistentInfo()->getJITServerUseAOTCache();
if (vmInfo._useAOTCache)
{
auto header = compInfoPT->reloRuntime()->getStoredAOTHeader(vmThread);
TR_ASSERT_FATAL(header, "Must have valid AOT header stored in SCC by now");
vmInfo._aotHeader = *header;
}
vmInfo._inSnapshotMode = fe->inSnapshotMode();
vmInfo._isPortableRestoreMode = fe->isPortableRestoreModeEnabled();
vmInfo._isSnapshotModeEnabled = fe->isSnapshotModeEnabled();
#if defined(J9VM_OPT_CRIU_SUPPORT)
vmInfo._isNonPortableRestoreMode = !javaVM->internalVMFunctions->isJVMInPortableRestoreMode(vmThread);
#else
vmInfo._isNonPortableRestoreMode = false;
#endif /* defined(J9VM_OPT_CRIU_SUPPORT) */
client->write(response, vmInfo, listOfCacheDescriptors, comp->getPersistentInfo()->getJITServerAOTCacheName());
}
break;
case MessageType::VM_getObjectClass:
{
TR::VMAccessCriticalSection getObjectClass(fe);
uintptr_t objectPointer = std::get<0>(client->getRecvData<uintptr_t>());
client->write(response, fe->getObjectClass(objectPointer));
}
break;
case MessageType::VM_getObjectClassAt:
{
uintptr_t objectAddress = std::get<0>(client->getRecvData<uintptr_t>());
client->write(response, fe->getObjectClassAt(objectAddress));
}
break;
case MessageType::VM_getObjectClassFromKnownObjectIndex:
{
auto recv = client->getRecvData<TR::KnownObjectTable::Index>();
auto idx = std::get<0>(recv);
client->write(response, fe->getObjectClassFromKnownObjectIndex(comp, idx));
}
break;
case MessageType::VM_stackWalkerMaySkipFrames:
{
client->getRecvData<JITServer::Void>();
client->write(response,
vmThread->javaVM->jlrMethodInvoke,
vmThread->javaVM->srMethodAccessor ? (TR_OpaqueClassBlock *) J9VM_J9CLASS_FROM_JCLASS(vmThread, vmThread->javaVM->srMethodAccessor) : NULL,
vmThread->javaVM->srConstructorAccessor ? (TR_OpaqueClassBlock *) J9VM_J9CLASS_FROM_JCLASS(vmThread, vmThread->javaVM->srConstructorAccessor) : NULL);
}
break;
case MessageType::VM_stackWalkerMaySkipFramesSVM:
{
auto recv = client->getRecvData<TR_OpaqueMethodBlock*, TR_OpaqueClassBlock*>();
TR_OpaqueMethodBlock *method = std::get<0>(recv);
TR_OpaqueClassBlock *clazz = std::get<1>(recv);
client->write(response, fe->stackWalkerMaySkipFrames(method, clazz));
}
break;
case MessageType::VM_getStringUTF8Length:
{
uintptr_t string = std::get<0>(client->getRecvData<uintptr_t>());
{
TR::VMAccessCriticalSection getStringUTF8Length(fe);
client->write(response, fe->getStringUTF8Length(string));
}
}
break;
case MessageType::VM_classInitIsFinished:
{
TR_OpaqueClassBlock *clazz = std::get<0>(client->getRecvData<TR_OpaqueClassBlock *>());
client->write(response, fe->classInitIsFinished(clazz));
}
break;
case MessageType::VM_getClassFromNewArrayType:
{
int32_t index = std::get<0>(client->getRecvData<int32_t>());
client->write(response, fe->getClassFromNewArrayType(index));
}
break;
case MessageType::VM_getArrayClassFromComponentClass:
{
auto clazz = std::get<0>(client->getRecvData<TR_OpaqueClassBlock *>());
client->write(response, fe->getArrayClassFromComponentClass(clazz));
}
break;
case MessageType::VM_matchRAMclassFromROMclass:
{
J9ROMClass *clazz = std::get<0>(client->getRecvData<J9ROMClass *>());
client->write(response, fe->matchRAMclassFromROMclass(clazz, comp));
}
break;
case MessageType::VM_getInt32FieldAt:
{
auto recv = client->getRecvData<uintptr_t, uintptr_t>();
uintptr_t objectPointer = std::get<0>(recv);
uintptr_t fieldOffset = std::get<1>(recv);
TR::VMAccessCriticalSection getInt32FieldAt(fe);
client->write(response, fe->getInt32FieldAt(objectPointer, fieldOffset));
}
break;
case MessageType::VM_getInt64FieldAt:
{
auto recv = client->getRecvData<uintptr_t, uintptr_t>();
uintptr_t objectPointer = std::get<0>(recv);
uintptr_t fieldOffset = std::get<1>(recv);
TR::VMAccessCriticalSection getInt64FieldAt(fe);
client->write(response, fe->getInt64FieldAt(objectPointer, fieldOffset));
}
break;
case MessageType::VM_setInt64FieldAt:
{
auto recv = client->getRecvData<uintptr_t, uintptr_t, int64_t>();
uintptr_t objectPointer = std::get<0>(recv);
uintptr_t fieldOffset = std::get<1>(recv);
int64_t newValue = std::get<2>(recv);
fe->setInt64FieldAt(objectPointer, fieldOffset, newValue);
client->write(response, JITServer::Void());
}
break;
case MessageType::VM_compareAndSwapInt64FieldAt:
{
auto recv = client->getRecvData<uintptr_t, uintptr_t, int64_t, int64_t>();
uintptr_t objectPointer = std::get<0>(recv);
uintptr_t fieldOffset = std::get<1>(recv);
int64_t oldValue = std::get<2>(recv);
int64_t newValue = std::get<3>(recv);
client->write(response, fe->compareAndSwapInt64FieldAt(objectPointer, fieldOffset, oldValue, newValue));
}
break;
case MessageType::VM_getArrayLengthInElements:
{
uintptr_t objectPointer = std::get<0>(client->getRecvData<uintptr_t>());
TR::VMAccessCriticalSection getArrayLengthInElements(fe);
client->write(response, fe->getArrayLengthInElements(objectPointer));
}
break;
case MessageType::VM_getClassFromJavaLangClass:
{
uintptr_t objectPointer = std::get<0>(client->getRecvData<uintptr_t>());
client->write(response, fe->getClassFromJavaLangClass(objectPointer));
}
break;
case MessageType::VM_getOffsetOfClassFromJavaLangClassField:
{
client->getRecvData<JITServer::Void>();
client->write(response, fe->getOffsetOfClassFromJavaLangClassField());
}
break;
case MessageType::VM_getIdentityHashSaltPolicy:
{
client->getRecvData<JITServer::Void>();
client->write(response, fe->getIdentityHashSaltPolicy());
}
break;
case MessageType::VM_getOffsetOfJLThreadJ9Thread:
{
client->getRecvData<JITServer::Void>();
client->write(response, fe->getOffsetOfJLThreadJ9Thread());
}
break;
case MessageType::VM_scanReferenceSlotsInClassForOffset:
{
auto recv = client->getRecvData<TR_OpaqueClassBlock *, int32_t>();
TR_OpaqueClassBlock *clazz = std::get<0>(recv);
int32_t offset = std::get<1>(recv);
client->write(response, fe->scanReferenceSlotsInClassForOffset(comp, clazz, offset));
}
break;
case MessageType::VM_findFirstHotFieldTenuredClassOffset:
{
TR_OpaqueClassBlock *clazz = std::get<0>(client->getRecvData<TR_OpaqueClassBlock *>());
client->write(response, fe->findFirstHotFieldTenuredClassOffset(comp, clazz));
}
break;
case MessageType::VM_getResolvedVirtualMethod:
{
auto recv = client->getRecvData<TR_OpaqueClassBlock *, I_32, bool>();
auto clazz = std::get<0>(recv);
auto offset = std::get<1>(recv);
auto ignoreRTResolve = std::get<2>(recv);
client->write(response, fe->getResolvedVirtualMethod(clazz, offset, ignoreRTResolve));
}
break;
case MessageType::VM_getJ2IThunk:
{
auto recv = client->getRecvData<std::string>();
auto &signature = std::get<0>(recv);
client->write(response, fe->getJ2IThunk((char *)signature.data(), signature.size(), comp));
}
break;
case MessageType::VM_setJ2IThunk:
{
auto recv = client->getRecvData<std::string, std::string>();
auto &signature = std::get<0>(recv);
auto &serializedThunk = std::get<1>(recv);
void *thunkAddress;
if (!comp->compileRelocatableCode())
{
// For non-AOT, copy thunk to code cache and relocate the vm helper address right away
uint8_t *thunkStart = TR_JITServerRelocationRuntime::copyDataToCodeCache(serializedThunk.data(), serializedThunk.size(), fe);
if (!thunkStart)
compInfoPT->getCompilation()->failCompilation<TR::CodeCacheError>("Failed to allocate space in the code cache");
thunkAddress = thunkStart + 8;
void *vmHelper = j9ThunkVMHelperFromSignature(fe->_jitConfig, signature.size(), (char *)signature.data());
compInfoPT->reloRuntime()->reloTarget()->performThunkRelocation(reinterpret_cast<uint8_t *>(thunkAddress), (uintptr_t)vmHelper);
}
else
{
// For AOT, set address to received string, because it will be stored to SCC, so
// no need for code cache allocation
thunkAddress = reinterpret_cast<void *>((char *)serializedThunk.data() + 8);
}
thunkAddress = fe->setJ2IThunk((char *)signature.data(), signature.size(), thunkAddress, comp);
client->write(response, thunkAddress);
}
break;
case MessageType::VM_needsInvokeExactJ2IThunk:
{
auto recv = client->getRecvData<std::string>();
auto &signature = std::get<0>(recv);
TR_MHJ2IThunkTable *thunkTable = comp->getPersistentInfo()->getInvokeExactJ2IThunkTable();
TR_MHJ2IThunk *thunk = thunkTable->findThunk((char *)signature.data(), fe);
client->write(response, thunk == NULL);
}
break;
case MessageType::VM_setInvokeExactJ2IThunk:
{
auto recv = client->getRecvData<std::string>();
auto &serializedThunk = std::get<0>(recv);
// Do not need relocation here, because helper address should have been originally
// fetched from the client.
uint8_t *thunkStart = TR_JITServerRelocationRuntime::copyDataToCodeCache(serializedThunk.data(), serializedThunk.size(), fe);
if (!thunkStart)
compInfoPT->getCompilation()->failCompilation<TR::CodeCacheError>("Failed to allocate space in the code cache");
void *thunkAddress = reinterpret_cast<void *>(thunkStart);
compInfoPT->reloRuntime()->reloTarget()->flushCache(thunkStart, serializedThunk.size());
fe->setInvokeExactJ2IThunk(thunkAddress, comp);
client->write(response, JITServer::Void());
}
break;
case MessageType::VM_getInstanceFieldOffset:
{
auto recv = client->getRecvData<TR_OpaqueClassBlock *, std::string, std::string, uintptr_t>();
TR_OpaqueClassBlock *clazz = std::get<0>(recv);
auto &field = std::get<1>(recv);
auto &sig = std::get<2>(recv);
uintptr_t options = std::get<3>(recv);
client->write(response, fe->getInstanceFieldOffset(clazz, field.data(), field.length(),
sig.data(), sig.length(), options));
}
break;
case MessageType::VM_getJavaLangClassHashCode:
{
TR_OpaqueClassBlock *clazz = std::get<0>(client->getRecvData<TR_OpaqueClassBlock *>());
bool hashCodeComputed = false;
int32_t hashCode = fe->getJavaLangClassHashCode(comp, clazz, hashCodeComputed);
client->write(response, hashCode, hashCodeComputed);
}
break;
case MessageType::VM_getClassDepthAndFlagsValue:
{
TR_OpaqueClassBlock *clazz = std::get<0>(client->getRecvData<TR_OpaqueClassBlock *>());
client->write(response, fe->getClassDepthAndFlagsValue(clazz));
}
break;
case MessageType::VM_getMethodFromName:
{
auto recv = client->getRecvData<std::string, std::string, std::string>();
auto &className = std::get<0>(recv);
auto &methodName = std::get<1>(recv);
auto &signature = std::get<2>(recv);
client->write(response, fe->getMethodFromName(className.data(), methodName.data(),
signature.data()));
}
break;
case MessageType::VM_getMethodFromClass:
{
auto recv = client->getRecvData<TR_OpaqueClassBlock *, std::string, std::string, TR_OpaqueClassBlock *>();
TR_OpaqueClassBlock *methodClass = std::get<0>(recv);
auto &methodName = std::get<1>(recv);
auto &signature = std::get<2>(recv);
TR_OpaqueClassBlock *callingClass = std::get<3>(recv);
client->write(response, fe->getMethodFromClass(methodClass, methodName.data(),
signature.data(), callingClass));
}
break;
case MessageType::VM_createMethodHandleArchetypeSpecimen:
{
auto recv = client->getRecvData<uintptr_t*, TR_ResolvedJ9Method *>();
uintptr_t *methodHandleLocation = std::get<0>(recv);
TR_ResolvedJ9Method *owningMethod = std::get<1>(recv);
intptr_t length;
char *thunkableSignature;
{
TR::VMAccessCriticalSection createMethodHandleArchetypeSpecimen(fe);
TR_OpaqueMethodBlock *archetype = fe->lookupMethodHandleThunkArchetype(*methodHandleLocation);
uintptr_t signatureString = fe->getReferenceField(fe->getReferenceField(
*methodHandleLocation,
"thunks", "Ljava/lang/invoke/ThunkTuple;"),
"thunkableSignature", "Ljava/lang/String;");
length = fe->getStringUTF8Length(signatureString);
thunkableSignature = (char*)trMemory->allocateStackMemory(length+1);
fe->getStringUTF8(signatureString, thunkableSignature, length+1);
TR_ResolvedMethod *resolvedMethod = fe->createResolvedMethodWithSignature(
trMemory,
archetype,
NULL,
thunkableSignature,
length,
owningMethod);
resolvedMethod->convertToMethod()->setArchetypeSpecimen();
resolvedMethod->setMethodHandleLocation(methodHandleLocation);
TR_ResolvedJ9JITServerMethodInfo methodInfo;
TR_ResolvedJ9JITServerMethod::packMethodInfo(methodInfo, static_cast<TR_ResolvedJ9Method *>(resolvedMethod), fe);
client->write(response, archetype, std::string(thunkableSignature, length), methodInfo);
}
}
break;
case MessageType::VM_isClassVisible:
{
auto recv = client->getRecvData<TR_OpaqueClassBlock *, TR_OpaqueClassBlock *>();
TR_OpaqueClassBlock *sourceClass = std::get<0>(recv);
TR_OpaqueClassBlock *destClass = std::get<1>(recv);
client->write(response, fe->isClassVisible(sourceClass, destClass));
}
break;
case MessageType::VM_markClassForTenuredAlignment:
{
auto recv = client->getRecvData<TR_OpaqueClassBlock *, uint32_t>();
TR_OpaqueClassBlock *clazz = std::get<0>(recv);
uint32_t alignFromStart = std::get<1>(recv);
fe->markClassForTenuredAlignment(comp, clazz, alignFromStart);
client->write(response, JITServer::Void());
}
break;
case MessageType::VM_reportHotField:
{
auto recv = client->getRecvData<int32_t, J9Class *, uint8_t, uint32_t>();
fe->reportHotField(std::get<0>(recv), std::get<1>(recv), std::get<2>(recv), std::get<3>(recv));
client->write(response, JITServer::Void());
}
break;
case MessageType::VM_getReferenceSlotsInClass:
{
TR_OpaqueClassBlock *clazz = std::get<0>(client->getRecvData<TR_OpaqueClassBlock *>());
int32_t *start = fe->getReferenceSlotsInClass(comp, clazz);
if (!start)
{
client->write(response, std::string());
}
else
{
int32_t numSlots = 0;
for (; start[numSlots]; ++numSlots);
// Copy the null terminated array into a string
std::string slotsStr((char *)start, (1 + numSlots) * sizeof(int32_t));
client->write(response, slotsStr);
}
}
break;
case MessageType::VM_getMethodSize:
{
TR_OpaqueMethodBlock *method = std::get<0>(client->getRecvData<TR_OpaqueMethodBlock *>());
client->write(response, fe->getMethodSize(method));
}
break;
case MessageType::VM_addressOfFirstClassStatic:
{
TR_OpaqueClassBlock *clazz = std::get<0>(client->getRecvData<TR_OpaqueClassBlock *>());
client->write(response, fe->addressOfFirstClassStatic(clazz));
}
break;
case MessageType::VM_getStaticFieldAddress:
{
auto recv = client->getRecvData<TR_OpaqueClassBlock *, std::string, std::string>();
TR_OpaqueClassBlock *clazz = std::get<0>(recv);
auto &fieldName = std::get<1>(recv);
auto &sigName = std::get<2>(recv);
client->write(response, fe->getStaticFieldAddress(clazz,
reinterpret_cast<unsigned char *>(const_cast<char *>(fieldName.data())), fieldName.length(),
reinterpret_cast<unsigned char *>(const_cast<char *>(sigName.data())), sigName.length()));
}
break;
case MessageType::VM_getInterpreterVTableSlot:
{
auto recv = client->getRecvData<TR_OpaqueMethodBlock *, TR_OpaqueClassBlock *>();
TR_OpaqueMethodBlock *method = std::get<0>(recv);
TR_OpaqueClassBlock *clazz = std::get<1>(recv);
client->write(response, fe->getInterpreterVTableSlot(method, clazz));
}
break;
case MessageType::VM_revertToInterpreted:
{
TR_OpaqueMethodBlock *method = std::get<0>(client->getRecvData<TR_OpaqueMethodBlock *>());
fe->revertToInterpreted(method);
client->write(response, JITServer::Void());
}
break;
case MessageType::VM_getLocationOfClassLoaderObjectPointer:
{
TR_OpaqueClassBlock *clazz = std::get<0>(client->getRecvData<TR_OpaqueClassBlock *>());
client->write(response, fe->getLocationOfClassLoaderObjectPointer(clazz));
}
break;
case MessageType::VM_getClassFromMethodBlock:
{
TR_OpaqueMethodBlock *method = std::get<0>(client->getRecvData<TR_OpaqueMethodBlock *>());
client->write(response, fe->getClassFromMethodBlock(method));
}
break;
case MessageType::VM_fetchMethodExtendedFlagsPointer:
{
J9Method *method = std::get<0>(client->getRecvData<J9Method *>());
client->write(response, fe->fetchMethodExtendedFlagsPointer(method));
}
break;
case MessageType::VM_stringEquals:
{
auto recv = client->getRecvData<uintptr_t *, uintptr_t *>();
uintptr_t *stringLocation1 = std::get<0>(recv);
uintptr_t *stringLocation2 = std::get<1>(recv);
int32_t result;
bool isEqual = fe->stringEquals(comp, stringLocation1, stringLocation2, result);
client->write(response, result, isEqual);
}
break;
case MessageType::VM_getStringHashCode:
{
uintptr_t *stringLocation = std::get<0>(client->getRecvData<uintptr_t *>());
int32_t result;
bool isGet = fe->getStringHashCode(comp, stringLocation, result);
client->write(response, result, isGet);
}
break;
case MessageType::VM_getLineNumberForMethodAndByteCodeIndex:
{
auto recv = client->getRecvData<TR_OpaqueMethodBlock *, int32_t>();
TR_OpaqueMethodBlock *method = std::get<0>(recv);
int32_t bcIndex = std::get<1>(recv);
client->write(response, fe->getLineNumberForMethodAndByteCodeIndex(method, bcIndex));
}
break;
case MessageType::VM_getObjectNewInstanceImplMethod:
{
client->getRecvData<JITServer::Void>();
client->write(response, fe->getObjectNewInstanceImplMethod());
}
break;
case MessageType::VM_getBytecodePC:
{
TR_OpaqueMethodBlock *method = std::get<0>(client->getRecvData<TR_OpaqueMethodBlock *>());
client->write(response, TR::Compiler->mtd.bytecodeStart(method));
}
break;
case MessageType::VM_getVFTEntry:
{
auto recv = client->getRecvData<TR_OpaqueClassBlock *, int32_t>();
client->write(response, fe->getVFTEntry(std::get<0>(recv), std::get<1>(recv)));
}
break;
case MessageType::VM_isClassArray:
{
auto recv = client->getRecvData<TR_OpaqueClassBlock*>();
auto clazz = std::get<0>(recv);
client->write(response, fe->isClassArray(clazz));
}
break;
case MessageType::VM_instanceOfOrCheckCast:
{
auto recv = client->getRecvData<J9Class*, J9Class*>();
auto clazz1 = std::get<0>(recv);
auto clazz2 = std::get<1>(recv);
client->write(response, fe->instanceOfOrCheckCast(clazz1, clazz2));
}
break;
case MessageType::VM_instanceOfOrCheckCastNoCacheUpdate: