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javadump.cpp
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/*******************************************************************************
* Copyright (c) 2003, 2021 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
*******************************************************************************/
/* Includes */
#if defined(J9ZOS390)
#define _LARGE_TIME_API
#endif /* defined(J9ZOS390) */
#include <time.h>
#if defined(AIXPPC)
#include <sys/time.h>
#endif /* defined(AIXPPC) */
#include <string.h>
#include <stdlib.h>
#if defined(WIN32)
#include <malloc.h>
#elif defined(LINUX) || defined(AIXPPC)
#include <alloca.h>
#elif defined(J9ZOS390)
#include <stdlib.h>
#endif
#include "rasdump_internal.h"
#include "j2sever.h"
#include "HeapIteratorAPI.h"
#include "j9dmpnls.h"
#include "omrlinkedlist.h"
#include "j9protos.h"
#include "TextFileStream.hpp"
#include "rommeth.h"
#include "j9dump.h"
#include "omrthread.h"
#include "avl_api.h"
#include "shcflags.h"
#include "j9port.h"
#include "sharedconsts.h"
#include "omrgcconsts.h"
#include "omr.h"
#include "omrutilbase.h"
#include "j9version.h"
#include "vendor_version.h"
#include "zip_api.h"
#include <limits.h>
#include "ute.h"
#include "ut_j9dmp.h"
#if defined(J9VM_OPT_JITSERVER)
#include "omrformatconsts.h"
#endif /* defined(J9VM_OPT_JITSERVER) */
#if defined(J9VM_ENV_DATA64)
#define SEGMENT_HEADER "NULL segment start alloc end type size\n"
#else
#define SEGMENT_HEADER "NULL segment start alloc end type size\n"
#endif
/* Format specifiers for printing memory quantities. */
#define FORMAT_SIZE_DECIMAL "%*zu"
#define FORMAT_SIZE_HEX "0x%.*zX"
#define HIST_TYPE_GC 1
#define HIST_TYPE_CT 2
/* Safety margin for stack allocation of AVL tree for thread walk */
#define STACK_SAFETY_MARGIN 25000
/* Callback Function prototypes */
UDATA writeFrameCallBack (J9VMThread* vmThread, J9StackWalkState* state);
UDATA writeExceptionFrameCallBack (J9VMThread* vmThread, void* userData, UDATA bytecodeOffset, J9ROMClass* romClass, J9ROMMethod* romMethod, J9UTF8* sourceFile, UDATA lineNumber, J9ClassLoader* classLoader, J9Class* ramClass);
void writeLoaderCallBack (void* classLoader, void* userData);
void writeLibrariesCallBack (void* classLoader, void* userData);
void writeClassesCallBack (void* classLoader, void* userData);
static UDATA outerMemCategoryCallBack (U_32 categoryCode, const char * categoryName, UDATA liveBytes, UDATA liveAllocations, BOOLEAN isRoot, U_32 parentCategoryCode, OMRMemCategoryWalkState * state);
static UDATA innerMemCategoryCallBack (U_32 categoryCode, const char * categoryName, UDATA liveBytes, UDATA liveAllocations, BOOLEAN isRoot, U_32 parentCategoryCode, OMRMemCategoryWalkState * state);
/* Function prototypes */
static jvmtiIterationControl heapIteratorCallback (J9JavaVM* vm, J9MM_IterateHeapDescriptor* heapDescriptor, void* userData);
static jvmtiIterationControl spaceIteratorCallback (J9JavaVM* vm, J9MM_IterateSpaceDescriptor* spaceDescriptor, void* userData);
static jvmtiIterationControl regionIteratorCallback (J9JavaVM* vm, J9MM_IterateRegionDescriptor* regionDescription, void* userData);
static UDATA getObjectMonitorCount(J9JavaVM *vm);
static UDATA getAllocatedVMThreadCount (J9JavaVM *vm);
/* sig_protect functions and handlers */
extern "C" {
UDATA protectedWriteSection (struct J9PortLibrary *, void *);
UDATA handlerWriteSection (struct J9PortLibrary *, U_32, void *, void *);
UDATA protectedStartDoWithSignal (struct J9PortLibrary *, void *);
UDATA protectedStartDo (struct J9PortLibrary *, void *);
UDATA protectedNextDo (struct J9PortLibrary *, void *);
UDATA protectedWalkJavaStack (struct J9PortLibrary *, void *);
UDATA protectedGetVMThreadName (struct J9PortLibrary *, void *);
UDATA protectedGetVMThreadObjectState (struct J9PortLibrary *, void *);
UDATA protectedGetVMThreadRawState (struct J9PortLibrary *, void *);
UDATA handlerJavaThreadWalk (struct J9PortLibrary *, U_32, void *, void *);
UDATA handlerNativeThreadWalk (struct J9PortLibrary *, U_32, void *, void *);
UDATA handlerGetVMThreadName (struct J9PortLibrary *, U_32, void *, void *);
UDATA handlerGetVMThreadObjectState (struct J9PortLibrary *, U_32, void *, void *);
UDATA handlerGetVMThreadRawState (struct J9PortLibrary *, U_32, void *, void *);
UDATA protectedWriteGCHistoryLines (struct J9PortLibrary *, void *);
UDATA protectedIterateStackTrace (struct J9PortLibrary *, void *);
UDATA protectedWriteThreadBlockers (struct J9PortLibrary *, void *);
UDATA protectedGetOwnedObjectMonitors (struct J9PortLibrary *, void *);
UDATA protectedWriteJavaLangThreadInfo (struct J9PortLibrary *, void *);
UDATA protectedWriteThreadsWithNativeStacks (struct J9PortLibrary *, void *);
UDATA protectedWriteThreadsJavaOnly (struct J9PortLibrary *, void *);
UDATA protectedWriteThreadsUsageSummary (struct J9PortLibrary *, void *);
UDATA handlerWriteThreadBlockers (struct J9PortLibrary *, U_32, void *, void *);
UDATA handlerGetThreadsUsageInfo (struct J9PortLibrary *, U_32, void *, void *);
UDATA handlerGetOwnedObjectMonitors (struct J9PortLibrary *, U_32, void *, void *);
UDATA handlerIterateStackTrace (struct J9PortLibrary *, U_32, void *, void *);
UDATA handlerWriteJavaLangThreadInfo(struct J9PortLibrary *, U_32, void *, void *);
UDATA handlerWriteStacks (struct J9PortLibrary *, U_32, void *, void *);
/* associated structures for passing arguments are below the JavaCoreDumpWriter declaration */
}
static IDATA vmthread_comparator(struct J9AVLTree *tree, struct J9AVLTreeNode *insertNode, struct J9AVLTreeNode *walkNode);
static IDATA vmthread_locator(struct J9AVLTree *tree, UDATA tid , struct J9AVLTreeNode *walkNode);
/* Functions used by hash table prototypes */
static UDATA lockHashFunction(void* key, void* user);
static UDATA lockHashEqualFunction(void* left, void* right, void* user);
static UDATA rasDumpPreemptLock = 0;
typedef struct regioniterationblock {
bool _newIteration;
const void *_regionStart;
UDATA _regionSize;
} regioniterationblock;
typedef struct vmthread_avl_node {
J9AVLTreeNode node;
J9VMThread *vmthread;
j9object_t lockObject;
J9VMThread *lockOwner;
UDATA vmThreadState;
UDATA javaThreadState;
UDATA javaPriority;
} vmthread_avl_node;
typedef struct blocked_thread_record {
omrthread_monitor_t monitor;
J9VMThread *waitingThread;
UDATA waitingThreadState;
} blocked_thread_record;
typedef struct memcategory_max_indexes {
U_32 omrMaxIndex;
U_32 languageMaxIndex;
} memcategory_max_indexes;
typedef struct memcategory_total {
U_32 *category_bitmask;
UDATA liveBytes;
UDATA liveAllocations;
U_32 codeToMatch;
BOOLEAN codeMatched;
} memcategory_total;
typedef struct memcategory_data_frame
{
U_32 category;
UDATA liveBytes;
UDATA liveAllocations;
} memcategory_data_frame;
/* Macros for working with the category_bitmask in the memcategory_total structure. The range of category codes is not contiguous, so we have
* to map entries from the end of the range (unknown & port library) onto the end of the entries from the start of the range*/
#define MAP_CATEGORY_TO_BITMASK_ENTRY(category) ( ((category) > OMRMEM_LANGUAGE_CATEGORY_LIMIT) ? ((writer->_MaxCategoryBits - 1) - (OMRMEM_OMR_CATEGORY_INDEX_FROM_CODE(category))): (category) )
#define CATEGORY_WORD_INDEX(category) (MAP_CATEGORY_TO_BITMASK_ENTRY(category) / 32)
#define CATEGORY_WORD_MASK(category) (1 << ( MAP_CATEGORY_TO_BITMASK_ENTRY(category) % 32 ))
#define CATEGORY_IS_ANCESTOR(total, category) ( (total)->category_bitmask[CATEGORY_WORD_INDEX(category)] & CATEGORY_WORD_MASK(category) )
#define SET_CATEGORY_AS_ANCESTOR(total, category) ( (total)->category_bitmask[CATEGORY_WORD_INDEX(category)] |= CATEGORY_WORD_MASK(category) )
static const UDATA syncEventsMask =
J9RAS_DUMP_ON_CLASS_LOAD |
J9RAS_DUMP_ON_CLASS_UNLOAD |
J9RAS_DUMP_ON_EXCEPTION_THROW |
J9RAS_DUMP_ON_EXCEPTION_CATCH |
J9RAS_DUMP_ON_THREAD_START |
J9RAS_DUMP_ON_THREAD_END |
J9RAS_DUMP_ON_THREAD_BLOCKED |
J9RAS_DUMP_ON_EXCEPTION_DESCRIBE |
J9RAS_DUMP_ON_OBJECT_ALLOCATION |
J9RAS_DUMP_ON_SLOW_EXCLUSIVE_ENTER |
J9RAS_DUMP_ON_EXCEPTION_SYSTHROW |
J9RAS_DUMP_ON_TRACE_ASSERT |
J9RAS_DUMP_ON_USER_REQUEST;
/**************************************************************************************************/
/* */
/* Class for writing java core dump files */
/* */
/**************************************************************************************************/
class JavaCoreDumpWriter
{
public :
/* Constructor */
JavaCoreDumpWriter(const char* fileName, J9RASdumpContext* context, J9RASdumpAgent *agent);
/* Destructor */
~JavaCoreDumpWriter();
private :
/* Prevent use of the copy constructor and assignment operator */
JavaCoreDumpWriter(const JavaCoreDumpWriter& source);
JavaCoreDumpWriter& operator=(const JavaCoreDumpWriter& source);
/* Allow the callback functions access */
friend UDATA writeFrameCallBack (J9VMThread* vmThread, J9StackWalkState* state);
friend UDATA writeExceptionFrameCallBack (J9VMThread* vmThread, void* userData, UDATA bytecodeOffset, J9ROMClass* romClass, J9ROMMethod* romMethod, J9UTF8* sourceFile, UDATA lineNumber, J9ClassLoader* classLoader, J9Class* ramClass);
friend void writeLoaderCallBack (void* classLoader, void* userData);
friend void writeLibrariesCallBack (void* classLoader, void* userData);
friend void writeClassesCallBack (void* classLoader, void* userData);
friend UDATA outerMemCategoryCallBack (U_32 categoryCode, const char * categoryName, UDATA liveBytes, UDATA liveAllocations, BOOLEAN isRoot, U_32 parentCategoryCode, OMRMemCategoryWalkState * state);
friend UDATA innerMemCategoryCallBack (U_32 categoryCode, const char * categoryName, UDATA liveBytes, UDATA liveAllocations, BOOLEAN isRoot, U_32 parentCategoryCode, OMRMemCategoryWalkState * state);
friend jvmtiIterationControl heapIteratorCallback (J9JavaVM* vm, J9MM_IterateHeapDescriptor* heapDescriptor, void* userData);
friend jvmtiIterationControl spaceIteratorCallback (J9JavaVM* vm, J9MM_IterateSpaceDescriptor* spaceDescriptor, void* userData);
friend jvmtiIterationControl regionIteratorCallback (J9JavaVM* vm, J9MM_IterateRegionDescriptor* regionDescription, void* userData);
/* sig_protect wrappers functions and handlers */
friend UDATA protectedWriteSection (struct J9PortLibrary *, void *);
friend UDATA handlerWriteSection (struct J9PortLibrary *, U_32, void *, void *);
friend UDATA handlerJavaThreadWalk (struct J9PortLibrary *, U_32, void *, void *);
friend UDATA protectedWalkJavaStack (struct J9PortLibrary *, void *);
friend UDATA protectedWriteGCHistoryLines (struct J9PortLibrary *, void *);
friend UDATA protectedIterateStackTrace (struct J9PortLibrary *, void *);
friend UDATA protectedWriteThreadBlockers (struct J9PortLibrary *, void *);
friend UDATA protectedGetOwnedObjectMonitors (struct J9PortLibrary *, void *);
friend UDATA protectedWriteJavaLangThreadInfo(struct J9PortLibrary *, void *);
friend UDATA protectedWriteThreadsWithNativeStacks(J9PortLibrary*, void*);
friend UDATA protectedWriteThreadsJavaOnly(J9PortLibrary*, void*);
friend UDATA protectedWriteThreadsUsageSummary(J9PortLibrary*, void*);
friend UDATA handlerWriteThreadBlockers (struct J9PortLibrary *, U_32, void *, void *);
friend UDATA handlerGetThreadsUsageInfo (struct J9PortLibrary *, U_32, void *, void *);
friend UDATA handlerGetOwnedObjectMonitors(struct J9PortLibrary *, U_32, void *, void *);
friend UDATA handlerIterateStackTrace (struct J9PortLibrary *, U_32, void *, void *);
friend UDATA handlerWriteJavaLangThreadInfo(struct J9PortLibrary *, U_32, void *, void *);
friend UDATA handlerWriteStacks(struct J9PortLibrary *, U_32, void *, void *);
/* Allow the functions used by hash tables access */
friend UDATA lockHashFunction(void* key, void* user);
friend UDATA lockHashEqualFunction(void* left, void* right, void* user);
/* Directed node in lock graph */
struct DeadLockGraphNode {
J9VMThread *thread;
DeadLockGraphNode *next;
J9ThreadAbstractMonitor *lock;
j9object_t lockObject;
UDATA cycle;
};
/* Internal convenience method for testing the context */
bool avoidLocks(void);
/* Internal methods for writing the first level sections */
void writeHeader(void);
void writeTitleSection(void);
void writeProcessorSection(void);
void writeEnvironmentSection(void);
void writeMemorySection(void);
void writeMemoryCountersSection(void);
void writeMonitorSection(void);
void writeThreadSection(void);
void writeClassSection(void);
#if defined(OMR_OPT_CUDA)
void writeCudaSection(void);
#endif /* defined(OMR_OPT_CUDA) */
/* OMR_OPT_HOOKDUMP */
void writeHookSection(void);
#if defined(J9VM_OPT_SHARED_CLASSES)
void writeSharedClassIPCInfo(const char* textStart, const char* textEnd, IDATA id, UDATA padToLength);
void writeSharedClassLockInfo(const char* lockName, IDATA lockSemid, void* lockTID);
void writeSharedClassSection(void);
void writeSharedClassSectionTopLayerStatsHelper(J9SharedClassJavacoreDataDescriptor* javacoreData, bool multiLayerStats);
void writeSharedClassSectionTopLayerStatsSummaryHelper(J9SharedClassJavacoreDataDescriptor* javacoreData);
void writeSharedClassSectionAllLayersStatsHelper(J9SharedClassJavacoreDataDescriptor* javacoreData);
#endif
void writeTrailer(void);
/* Internal methods for writing the nested sections */
void writeVMRuntimeState (U_32 vmRuntimeState);
void writeExceptionDetail (j9object_t* exceptionRef);
void writeGPCategory (void *gpInfo, const char* prefix, U_32 category);
void writeGPValue (const char* prefix, const char* name, U_32 kind, void* value);
void writeJitMethod (J9VMThread* vmThread);
void writeSegments (J9MemorySegmentList* list, BOOLEAN isCodeCacheSegment);
void writeTraceHistory (U_32 type);
void writeGCHistoryLines (UtThreadData** thr, UtTracePointIterator* iterator, const char* typePrefix);
void writeDeadLocks (void);
void findThreadCycle (J9VMThread* vmThread, J9HashTable* deadlocks);
void writeDeadlockNode (DeadLockGraphNode* node, int count);
void writeMonitorObject (J9ThreadMonitor* monitor, j9object_t obj, blocked_thread_record *threadStore);
void writeMonitor (J9ThreadMonitor* monitor);
void writeSystemMonitor (J9ThreadMonitor* monitor);
void writeObject (j9object_t obj);
void writeThread (J9VMThread* vmThread, J9PlatformThread *nativeThread, UDATA vmstate, UDATA javaState, UDATA javaPriority, j9object_t lockObject, J9VMThread *lockOwnerThread);
void writeThreadName (J9VMThread* vmThread);
void writeThreadBlockers (J9VMThread* vmThread, UDATA vmstate, j9object_t lockObject, J9VMThread *lockOwnerThread );
UDATA writeFrame (J9StackWalkState* state);
UDATA writeExceptionFrame (void *userData, J9ROMClass* romClass, J9ROMMethod* romMethod, J9UTF8* sourceFile, UDATA lineNumber);
void writeLoader (J9ClassLoader* classLoader);
void writeLibraries (J9ClassLoader* classLoader);
void writeClasses (J9ClassLoader* classLoader);
void writeEventDrivenTitle (void);
void writeUserRequestedTitle (void);
void writeNativeAllocator (const char * name, U_32 depth, BOOLEAN isRoot, UDATA liveBytes, UDATA liveAllocations);
IDATA getOwnedObjectMonitors (J9VMThread* vmThread, J9ObjectMonitorInfo* monitorInfos);
void writeJavaLangThreadInfo (J9VMThread* vmThread);
void writeCPUinfo (void);
#if defined(LINUX)
void writeCgroupMetrics(void);
#endif
void writeThreadsWithNativeStacks(void);
void writeThreadsJavaOnly(void);
void writeThreadTime (const char * timerName, I_64 nanoTime);
void writeThreadsUsageSummary (void);
void writeHookInfo (struct OMRHookInfo4Dump *hookInfo);
void writeHookInterface (struct J9HookInterface **hookInterface);
/* Other internal methods */
j9object_t getClassLoaderObject(J9ClassLoader* loader);
UDATA createPadding(const char* str, UDATA fieldWidth, char padChar, char* buffer);
void writeThreadState(UDATA threadState);
/* Declared data */
/* NB : The initialization order is significant */
J9RASdumpContext* _Context;
J9JavaVM* _VirtualMachine;
J9PortLibrary* _PortLibrary;
const char* _FileName;
TextFileStream _OutputStream;
bool _FileMode;
bool _Error;
bool _AvoidLocks;
bool _PreemptLocked;
bool _ThreadsWalkStarted;
J9RASdumpAgent * _Agent;
memcategory_data_frame* _CategoryStack;
U_32 _CategoryStackTop;
const char * _SpaceDescriptorName;
U_32 _TotalCategories;
U_32 _MaxCategoryBits;
UDATA _AllocatedVMThreadCount;
/* Static declared data */
static const unsigned int _MaximumExceptionNameLength;
static const U_32 _MaximumFormattedTracePointLength;
static const unsigned int _MaximumCommandLineLength;
static const unsigned int _MaximumTimeStampLength;
static const unsigned int _MaximumGPValueLength;
static const unsigned int _MaximumJavaStackDepth;
static const int _MaximumGCHistoryLines;
static const int _MaximumMonitorInfosPerThread;
};
/* Static declared data instantiation */
const unsigned int JavaCoreDumpWriter::_MaximumExceptionNameLength(128);
const unsigned int JavaCoreDumpWriter::_MaximumFormattedTracePointLength(512);
const unsigned int JavaCoreDumpWriter::_MaximumCommandLineLength(512);
const unsigned int JavaCoreDumpWriter::_MaximumTimeStampLength(30);
const unsigned int JavaCoreDumpWriter::_MaximumGPValueLength(512);
const unsigned int JavaCoreDumpWriter::_MaximumJavaStackDepth(100000);
const int JavaCoreDumpWriter::_MaximumGCHistoryLines(2000);
const int JavaCoreDumpWriter::_MaximumMonitorInfosPerThread(32);
class sectionClosure {
private:
sectionClosure() {}
public:
void (JavaCoreDumpWriter::*sectionFunction)(void);
JavaCoreDumpWriter *jcw;
sectionClosure(void (JavaCoreDumpWriter::*func)(void), JavaCoreDumpWriter *writer) :
sectionFunction(func),
jcw(writer)
{}
void invoke(void) {
(jcw->*sectionFunction)();
}
};
struct walkClosure {
J9Heap *heap;
void *gpInfo;
JavaCoreDumpWriter *jcw;
/* used for both J9ThreadWalkState and J9StackWalkState */
void *state;
};
#define CALL_PROTECT(section, retVal) \
do { \
sectionClosure closure(&JavaCoreDumpWriter::section, this); \
UDATA sink; \
retVal = j9sig_protect(protectedWriteSection, &closure, handlerWriteSection, this, J9PORT_SIG_FLAG_SIGALLSYNC|J9PORT_SIG_FLAG_MAY_RETURN, &sink) || retVal; \
} while (0);
/**************************************************************************************************/
/* */
/* JavaCoreDumpWriter::JavaCoreDumpWriter() method implementation */
/* */
/**************************************************************************************************/
JavaCoreDumpWriter::JavaCoreDumpWriter(
const char* fileName,
J9RASdumpContext* context,
J9RASdumpAgent* agent
) :
_Context(context),
_VirtualMachine(_Context->javaVM),
_PortLibrary(_VirtualMachine->portLibrary),
_FileName(fileName),
_OutputStream(_PortLibrary),
_FileMode(false),
_Error(false),
_AvoidLocks(false),
_PreemptLocked(false),
_ThreadsWalkStarted(false),
_Agent(agent),
_TotalCategories(0),
_MaxCategoryBits(0)
{
PORT_ACCESS_FROM_PORT(_PortLibrary);
bool bufferWrites=false;
_AllocatedVMThreadCount = getAllocatedVMThreadCount(_VirtualMachine);
/* Determine whether getting further locks should be avoided
* There is a small timing window where we can crash close to
* startup and the vmThreadListMutex is NULL.
* Failing to check for NULL leads to a endless spin.*/
if(NULL == _VirtualMachine->vmThreadListMutex) {
_AvoidLocks = true;
} else if (omrthread_monitor_try_enter(_VirtualMachine->vmThreadListMutex)) {
/* Failed to get lock so avoid asking for further ones if it's a GPF or abort */
_AvoidLocks = ((_Context->eventFlags & (J9RAS_DUMP_ON_GP_FAULT | J9RAS_DUMP_ON_ABORT_SIGNAL)) != 0);
} else {
/* Got the lock so release it */
omrthread_monitor_exit(_VirtualMachine->vmThreadListMutex);
_AvoidLocks = false;
}
/* Write a message to standard error saying we are about to write a dump file */
reportDumpRequest(_PortLibrary,_Context,"Java",_FileName);
/* don't buffer if we don't have the locks (incl exclusive) or it's a GP. */
bufferWrites = !_AvoidLocks
&& ((_Context->eventFlags & (J9RAS_DUMP_ON_GP_FAULT | J9RAS_DUMP_ON_ABORT_SIGNAL)) == 0)
&& ((_Agent->prepState & J9RAS_DUMP_GOT_EXCLUSIVE_VM_ACCESS) == J9RAS_DUMP_GOT_EXCLUSIVE_VM_ACCESS);
/* It's a single file so open it */
_OutputStream.open(_FileName, bufferWrites);
/* Write the sections, these return void so we throw away the per section return value.
* We consolidate the return values for all of the sections so we know after we finish
* if any of them failed.
*/
CALL_PROTECT(writeTitleSection, _Error);
CALL_PROTECT(writeProcessorSection, _Error);
CALL_PROTECT(writeEnvironmentSection, _Error);
CALL_PROTECT(writeMemoryCountersSection, _Error);
CALL_PROTECT(writeMemorySection, _Error);
/* The monitor section is crash prone as objects mutate under it.
* Lock ordering imposed by the lock inflation path means that we have to get the monitorTableMutex ahead of the
* thread lock as we will attempt to get it again for uninflated locks when calling getVMThreadRawState while looking
* for waiting threads on any given monitor
*/
omrthread_monitor_enter(_VirtualMachine->monitorTableMutex);
omrthread_t self = omrthread_self();
if (!omrthread_lib_try_lock(self)) {
/* got both locks so we shouldn't deadlock getting thread state */
CALL_PROTECT(writeMonitorSection, _Error);
omrthread_lib_unlock(self);
} else {
/* Write the section header */
_OutputStream.writeCharacters(
"0SECTION LOCKS subcomponent dump routine\n"
"NULL ===============================\n"
"1LKMONPOOLDUMP Monitor Pool Dump unavailable [locked]\n"
"1LKREGMONDUMP JVM System Monitor Dump unavailable [locked]\n"
"NULL ------------------------------------------------------------------------\n");
}
omrthread_monitor_exit(_VirtualMachine->monitorTableMutex);
/* If request=preempt (for native stack collection) we attempt to acquire the mutex and note if we got it */
if (_Agent->requestMask & J9RAS_DUMP_DO_PREEMPT_THREADS) {
if (compareAndSwapUDATA(&rasDumpPreemptLock, 0, 1) == 0) {
_PreemptLocked = true; /* we got the lock */
}
}
CALL_PROTECT(writeThreadSection, _Error);
if (_PreemptLocked) {
compareAndSwapUDATA(&rasDumpPreemptLock, 1, 0);
_PreemptLocked = false;
}
#if defined(OMR_OPT_CUDA)
CALL_PROTECT(writeCudaSection, _Error);
#endif /* defined(OMR_OPT_CUDA) */
/* OMR_OPT_HOOKDUMP */
CALL_PROTECT(writeHookSection, _Error);
#if defined(J9VM_OPT_SHARED_CLASSES)
CALL_PROTECT(writeSharedClassSection, _Error);
#endif
CALL_PROTECT(writeClassSection, _Error);
CALL_PROTECT(writeTrailer, _Error);
/* Record the status of the operation */
_FileMode = _FileMode || _OutputStream.isOpen();
_Error = _Error || _OutputStream.isError();
/* Close the file */
_OutputStream.close();
/* Write a message to standard error saying we have written a dump file */
if (_Error) {
j9nls_printf(PORTLIB, J9NLS_ERROR | J9NLS_STDERR, J9NLS_DMP_ERROR_IN_DUMP_STR, "Java", _FileName);
Trc_dump_reportDumpError_Event2("Java", _FileName);
} else if (_FileMode) {
j9nls_printf(PORTLIB, J9NLS_INFO | J9NLS_STDERR, J9NLS_DMP_WRITTEN_DUMP_STR, "Java", _FileName);
Trc_dump_reportDumpEnd_Event2("Java", _FileName);
} else {
j9nls_printf(PORTLIB, J9NLS_INFO | J9NLS_STDERR, J9NLS_DMP_NO_CREATE, _FileName);
Trc_dump_reportDumpEnd_Event2("Java", "stderr");
}
}
/**************************************************************************************************/
/* */
/* JavaCoreDumpWriter::~JavaCoreDumpWriter() method implementation */
/* */
/**************************************************************************************************/
JavaCoreDumpWriter::~JavaCoreDumpWriter()
{
/* Nothing to do currently */
}
/**************************************************************************************************/
/* */
/* JavaCoreDumpWriter::avoidLocks() method implementation */
/* */
/**************************************************************************************************/
bool
JavaCoreDumpWriter::avoidLocks(void)
{
return _AvoidLocks;
}
/**************************************************************************************************/
/* */
/* JavaCoreDumpWriter::writeHeader() method implementation */
/* */
/**************************************************************************************************/
void
JavaCoreDumpWriter::writeHeader(void)
{
_OutputStream.writeCharacters(
"NULL ------------------------------------------------------------------------\n"
);
}
static const char TIMESTAMP_FORMAT[] = "%Y/%m/%d at %H:%M:%S";
/**************************************************************************************************/
/* */
/* JavaCoreDumpWriter::writeTitleSection() method implementation */
/* */
/**************************************************************************************************/
void
JavaCoreDumpWriter::writeTitleSection(void)
{
/* Write the section header */
_OutputStream.writeCharacters(
"0SECTION TITLE subcomponent dump routine\n"
"NULL ===============================\n"
);
PORT_ACCESS_FROM_JAVAVM(_VirtualMachine);
OMRPORT_ACCESS_FROM_J9PORT(PORTLIB);
char cset[64];
IDATA getCSet = j9file_get_text_encoding(cset, sizeof(cset));
if (getCSet != 0) {
strcpy(cset,"[not available]");
}
_OutputStream.writeCharacters("1TICHARSET ");
_OutputStream.writeCharacters(cset);
_OutputStream.writeCharacters("\n");
if (J9RAS_DUMP_ON_USER_REQUEST == _Context->eventFlags) {
writeUserRequestedTitle();
} else {
writeEventDrivenTitle();
}
/* write the date and time that the dump was generated */
char timeStamp[_MaximumTimeStampLength + 1];
int64_t now = j9time_current_time_millis();
omrstr_ftime_ex(timeStamp, _MaximumTimeStampLength, TIMESTAMP_FORMAT, now, OMRSTR_FTIME_FLAG_UTC);
timeStamp[_MaximumTimeStampLength] = '\0';
_OutputStream.writeCharacters("1TIDATETIMEUTC Date: ");
_OutputStream.writeCharacters(timeStamp);
_OutputStream.writeInteger(now % 1000, ":%03d"); /* add the milliseconds */
_OutputStream.writeCharacters(" (UTC)\n");
{
RasDumpGlobalStorage *dump_storage = (RasDumpGlobalStorage *)_VirtualMachine->j9rasdumpGlobalStorage;
struct J9StringTokens *stringTokens = (struct J9StringTokens *)dump_storage->dumpLabelTokens;
/* lock access to the tokens */
omrthread_monitor_enter(dump_storage->dumpLabelTokensMutex);
j9str_set_time_tokens(stringTokens, now);
/* release access to the tokens */
omrthread_monitor_exit(dump_storage->dumpLabelTokensMutex);
}
omrstr_ftime_ex(timeStamp, _MaximumTimeStampLength, TIMESTAMP_FORMAT, now, OMRSTR_FTIME_FLAG_LOCAL);
timeStamp[_MaximumTimeStampLength] = '\0';
_OutputStream.writeCharacters("1TIDATETIME Date: ");
_OutputStream.writeCharacters(timeStamp);
_OutputStream.writeInteger(now % 1000, ":%03d"); /* add the milliseconds */
_OutputStream.writeCharacters("\n");
bool zoneAvailable = false;
int32_t zoneSecondsEast = 0;
const char *zoneName = NULL;
#if defined(WIN32)
/* until a reliable mechanism is found, don't report timezone */
#elif defined(J9ZOS390) /* defined(WIN32) */
time64_t timeNow = time64(NULL);
struct tm utc;
struct tm local;
if ((NULL != gmtime64_r(&timeNow, &utc)) && (NULL != localtime64_r(&timeNow, &local))) {
zoneAvailable = true;
zoneSecondsEast = (int32_t)difftime64(timeNow, mktime64(&utc));
if (0 == local.tm_isdst) {
zoneName = tzname[0];
} else if (local.tm_isdst > 0) {
zoneName = tzname[1];
/* compensate for DST because difftime64() doesn't appear to do so */
zoneSecondsEast += 60 * 60;
}
}
#else /* defined(WIN32) */
time_t timeNow = time(NULL);
struct tm utc;
struct tm local;
if ((NULL != gmtime_r(&timeNow, &utc)) && (NULL != localtime_r(&timeNow, &local))) {
zoneAvailable = true;
zoneSecondsEast = (int32_t)difftime(timeNow, mktime(&utc));
if (0 == local.tm_isdst) {
zoneName = tzname[0];
} else if (local.tm_isdst > 0) {
zoneName = tzname[1];
/* compensate for DST because difftime() doesn't appear to do so */
zoneSecondsEast += 60 * 60;
}
}
#endif /* defined(WIN32) */
_OutputStream.writeCharacters("1TITIMEZONE Timezone: ");
if (!zoneAvailable) {
_OutputStream.writeCharacters("(unavailable)");
} else {
_OutputStream.writeCharacters("UTC");
if (0 != zoneSecondsEast) {
const char *format = (zoneSecondsEast > 0) ? "+%d" : "-%d";
uint32_t offset = ((uint32_t)((zoneSecondsEast > 0) ? zoneSecondsEast : -zoneSecondsEast)) / 60;
uint32_t hours = offset / 60;
uint32_t minutes = offset % 60;
_OutputStream.writeInteger(hours, format);
if (0 != minutes) {
_OutputStream.writeInteger(minutes, ":%02d");
}
}
if ((NULL != zoneName) && ('\0' != *zoneName)) {
_OutputStream.writeCharacters(" (");
_OutputStream.writeCharacters(zoneName);
_OutputStream.writeCharacters(")");
}
}
_OutputStream.writeCharacters("\n");
_OutputStream.writeCharacters("1TINANOTIME System nanotime: ");
_OutputStream.writeInteger64(j9time_nano_time(), "%llu");
_OutputStream.writeCharacters("\n");
/* Write the file name */
_OutputStream.writeCharacters("1TIFILENAME Javacore filename: ");
_OutputStream.writeCharacters(_FileName);
_OutputStream.writeCharacters("\n");
/* Record whether this is exclusive or not */
_OutputStream.writeCharacters("1TIREQFLAGS Request Flags: ");
_OutputStream.writeInteger(_Agent->requestMask);
if (_Agent->requestMask) {
UDATA moreRequests = _Agent->requestMask;
_OutputStream.writeCharacters(" (");
moreRequests = moreRequests >> 1;
if ((_Agent->requestMask & J9RAS_DUMP_DO_EXCLUSIVE_VM_ACCESS) == J9RAS_DUMP_DO_EXCLUSIVE_VM_ACCESS) {
_OutputStream.writeCharacters("exclusive");
if (moreRequests) {
_OutputStream.writeCharacters("+");
}
}
moreRequests = moreRequests >> 1;
if ((_Agent->requestMask & J9RAS_DUMP_DO_COMPACT_HEAP) == J9RAS_DUMP_DO_COMPACT_HEAP) {
_OutputStream.writeCharacters("compact");
if (moreRequests) {
_OutputStream.writeCharacters("+");
}
}
moreRequests = moreRequests >> 1;
if ((_Agent->requestMask & J9RAS_DUMP_DO_PREPARE_HEAP_FOR_WALK) == J9RAS_DUMP_DO_PREPARE_HEAP_FOR_WALK) {
_OutputStream.writeCharacters("prepwalk");
if (moreRequests) {
_OutputStream.writeCharacters("+");
}
}
moreRequests = moreRequests >> 1;
if ((_Agent->requestMask & J9RAS_DUMP_DO_SUSPEND_OTHER_DUMPS) == J9RAS_DUMP_DO_SUSPEND_OTHER_DUMPS) {
_OutputStream.writeCharacters("serial");
if (moreRequests) {
_OutputStream.writeCharacters("+");
}
}
moreRequests = moreRequests >> 1;
if ((_Agent->requestMask & J9RAS_DUMP_DO_HALT_ALL_THREADS) == J9RAS_DUMP_DO_HALT_ALL_THREADS) {
}
moreRequests = moreRequests >> 1;
if ((_Agent->requestMask & J9RAS_DUMP_DO_ATTACH_THREAD) == J9RAS_DUMP_DO_ATTACH_THREAD) {
_OutputStream.writeCharacters("attach");
if (moreRequests) {
_OutputStream.writeCharacters("+");
}
}
moreRequests = moreRequests >> 1;
if ((_Agent->requestMask & J9RAS_DUMP_DO_MULTIPLE_HEAPS) == J9RAS_DUMP_DO_MULTIPLE_HEAPS) {
_OutputStream.writeCharacters("multiple");
if (moreRequests) {
_OutputStream.writeCharacters("+");
}
}
if ((_Agent->requestMask & J9RAS_DUMP_DO_PREEMPT_THREADS) == J9RAS_DUMP_DO_PREEMPT_THREADS) {
_OutputStream.writeCharacters("preempt");
}
_OutputStream.writeCharacters(")");
}
_OutputStream.writeCharacters("\n");
_OutputStream.writeCharacters("1TIPREPSTATE Prep State: ");
_OutputStream.writeInteger(_Agent->prepState);
if (_Agent->prepState) {
UDATA moreState = _Agent->prepState;
_OutputStream.writeCharacters(" (");
moreState = moreState >> 1;
if ((_Agent->prepState & J9RAS_DUMP_GOT_LOCK) == J9RAS_DUMP_GOT_LOCK) {
_OutputStream.writeCharacters("rasdump_lock");
if (moreState) {
_OutputStream.writeCharacters("+");
}
}
moreState = moreState >> 1;
if ((_Agent->prepState & J9RAS_DUMP_GOT_VM_ACCESS) == J9RAS_DUMP_GOT_VM_ACCESS) {
_OutputStream.writeCharacters("vm_access");
if (moreState) {
_OutputStream.writeCharacters("+");
}
}
moreState = moreState >> 1;
if ((_Agent->prepState & J9RAS_DUMP_GOT_EXCLUSIVE_VM_ACCESS) == J9RAS_DUMP_GOT_EXCLUSIVE_VM_ACCESS) {
_OutputStream.writeCharacters("exclusive_vm_access");
if (moreState) {
_OutputStream.writeCharacters("+");
}
}
moreState = moreState >> 1;
if ((_Agent->prepState & J9RAS_DUMP_HEAP_COMPACTED) == J9RAS_DUMP_HEAP_COMPACTED) {
_OutputStream.writeCharacters("heap_compacted");
if (moreState) {
_OutputStream.writeCharacters("+");
}
}
moreState = moreState >> 1;
if ((_Agent->prepState & J9RAS_DUMP_HEAP_PREPARED) == J9RAS_DUMP_HEAP_PREPARED) {
_OutputStream.writeCharacters("heap_prepared");
if (moreState) {
_OutputStream.writeCharacters("+");
}
}
moreState = moreState >> 1;
if ((_Agent->prepState & J9RAS_DUMP_THREADS_HALTED) == J9RAS_DUMP_THREADS_HALTED) {
_OutputStream.writeCharacters("threads_halted");
if (moreState) {
_OutputStream.writeCharacters("+");
}
}
moreState = moreState >> 1;
if ((_Agent->prepState & J9RAS_DUMP_ATTACHED_THREAD) == J9RAS_DUMP_ATTACHED_THREAD) {
_OutputStream.writeCharacters("attached_thread");
if (moreState) {
_OutputStream.writeCharacters("+");
}
}
moreState = moreState >> 1;
if ((_Agent->prepState & J9RAS_DUMP_PREEMPT_THREADS) == J9RAS_DUMP_PREEMPT_THREADS) {
_OutputStream.writeCharacters("preempt_threads");
if (moreState) {
_OutputStream.writeCharacters("+");
}
}
if ((_Agent->prepState & J9RAS_DUMP_TRACE_DISABLED) == J9RAS_DUMP_TRACE_DISABLED) {
_OutputStream.writeCharacters("trace_disabled");
}
_OutputStream.writeCharacters(")");
}
_OutputStream.writeCharacters("\n");
if ((_Agent->prepState & J9RAS_DUMP_GOT_EXCLUSIVE_VM_ACCESS) == 0) {
_OutputStream.writeCharacters("1TIPREPINFO Exclusive VM access not taken: data may not be consistent across javacore sections\n");
}
/* Write the section trailer */
_OutputStream.writeCharacters("NULL ------------------------------------------------------------------------\n");
}
/**************************************************************************************************/
/* */
/* JavaCoreDumpWriter::writeEventDrivenTitle() method implementation */
/* */
/**************************************************************************************************/
void
JavaCoreDumpWriter::writeEventDrivenTitle(void)
{
/* Write the dump event description */
_OutputStream.writeCharacters("1TISIGINFO Dump Event \"");
_OutputStream.writeCharacters(mapDumpEvent(_Context->eventFlags));
_OutputStream.writeCharacters("\" (");
_OutputStream.writeInteger(_Context->eventFlags, "%08zX");
_OutputStream.writeCharacters(")");
/* Write the event data */
J9RASdumpEventData* eventData = _Context->eventData;
if (eventData) {
_OutputStream.writeCharacters(" Detail \"");
_OutputStream.writeCharacters(eventData->detailData, eventData->detailLength);
_OutputStream.writeCharacters("\"");
writeExceptionDetail((j9object_t*)eventData->exceptionRef);
}
_OutputStream.writeCharacters(" received\n");
}
/**************************************************************************************************/
/* */
/* JavaCoreDumpWriter::writeUserRequestedTitle() method implementation */
/* */
/**************************************************************************************************/
void
JavaCoreDumpWriter::writeUserRequestedTitle(void)
{
/* Write the dump event description */
_OutputStream.writeCharacters("1TISIGINFO Dump Requested By User (");
_OutputStream.writeInteger(_Context->eventFlags, "%08zX");
_OutputStream.writeCharacters(")");
/* Write the event data */
J9RASdumpEventData* eventData = _Context->eventData;
if (eventData) {
_OutputStream.writeCharacters(" Through ");
_OutputStream.writeCharacters(eventData->detailData, eventData->detailLength);
}
_OutputStream.writeCharacters("\n");
}
/**************************************************************************************************/
/* */
/* JavaCoreDumpWriter::writeProcessorSection() method implementation */
/* */
/**************************************************************************************************/
void
JavaCoreDumpWriter::writeProcessorSection(void)
{
PORT_ACCESS_FROM_JAVAVM(_VirtualMachine);
/* Write the section header */
_OutputStream.writeCharacters(
"0SECTION GPINFO subcomponent dump routine\n"
"NULL ================================\n"
);
#ifdef J9VM_RAS_EYECATCHERS
/* Write the operating system description */
J9RAS* j9ras = _VirtualMachine->j9ras;
const char* osName = (char*)(j9ras->osname);
const char* osVersion = (char*)(j9ras->osversion);
const char* osArchitecture = (char*)(j9ras->osarch);
int numberOfCpus = j9ras->cpus;
#else /* !J9VM_RAS_EYECATCHERS */
const char* osName = j9sysinfo_get_OS_type();
const char* osVersion = j9sysinfo_get_OS_version();
const char* osArchitecture = j9sysinfo_get_CPU_architecture();
int numberOfCpus = j9sysinfo_get_number_CPUs_by_type(J9PORT_CPU_ONLINE);
if (osName == NULL) {
osName = "[not available]";
}
if (osVersion == NULL) {
osVersion = "[not available]";
}
if (osArchitecture == NULL) {
osArchitecture = "[not available]";
}
#endif /* !J9VM_RAS_EYECATCHERS */
/* Write the operating system description */
_OutputStream.writeCharacters("2XHOSLEVEL OS Level : ");
_OutputStream.writeCharacters(osName);
_OutputStream.writeCharacters(" ");
_OutputStream.writeCharacters(osVersion);
_OutputStream.writeCharacters("\n");
/* Write the processor description */
_OutputStream.writeCharacters("2XHCPUS Processors -\n");
_OutputStream.writeCharacters("3XHCPUARCH Architecture : ");
_OutputStream.writeCharacters(osArchitecture);
_OutputStream.writeCharacters("\n");
_OutputStream.writeCharacters("3XHNUMCPUS How Many : ");
_OutputStream.writeInteger(numberOfCpus, "%i");
_OutputStream.writeCharacters("\n");
/* Write the NUMA support description */
_OutputStream.writeCharacters("3XHNUMASUP ");