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178842d251
8151066: assert(0 <= i && i < length()) failed: index out of bounds Lock classes for redefinition because constant pool merging isn't thread safe, use method constant pool because constant pool merging doesn't make equivalent cpCaches because of invokedynamic Reviewed-by: sspitsyn, dholmes
315 lines
16 KiB
C++
315 lines
16 KiB
C++
/*
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* Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#include "precompiled.hpp"
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#include "runtime/mutexLocker.hpp"
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#include "runtime/os.inline.hpp"
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#include "runtime/safepoint.hpp"
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#include "runtime/thread.inline.hpp"
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#include "runtime/vmThread.hpp"
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// Mutexes used in the VM (see comment in mutexLocker.hpp):
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//
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// Note that the following pointers are effectively final -- after having been
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// set at JVM startup-time, they should never be subsequently mutated.
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// Instead of using pointers to malloc()ed monitors and mutexes we should consider
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// eliminating the indirection and using instances instead.
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// Consider using GCC's __read_mostly.
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Mutex* Patching_lock = NULL;
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Monitor* SystemDictionary_lock = NULL;
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Mutex* Module_lock = NULL;
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Mutex* CompiledIC_lock = NULL;
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Mutex* InlineCacheBuffer_lock = NULL;
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Mutex* VMStatistic_lock = NULL;
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Mutex* JNIGlobalHandle_lock = NULL;
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Mutex* JNIHandleBlockFreeList_lock = NULL;
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Mutex* MemberNameTable_lock = NULL;
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Mutex* JmethodIdCreation_lock = NULL;
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Mutex* JfieldIdCreation_lock = NULL;
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Monitor* JNICritical_lock = NULL;
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Mutex* JvmtiThreadState_lock = NULL;
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Monitor* Heap_lock = NULL;
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Mutex* ExpandHeap_lock = NULL;
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Mutex* AdapterHandlerLibrary_lock = NULL;
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Mutex* SignatureHandlerLibrary_lock = NULL;
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Mutex* VtableStubs_lock = NULL;
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Mutex* SymbolTable_lock = NULL;
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Mutex* StringTable_lock = NULL;
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Monitor* StringDedupQueue_lock = NULL;
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Mutex* StringDedupTable_lock = NULL;
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Monitor* CodeCache_lock = NULL;
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Mutex* MethodData_lock = NULL;
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Mutex* TouchedMethodLog_lock = NULL;
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Mutex* RetData_lock = NULL;
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Monitor* VMOperationQueue_lock = NULL;
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Monitor* VMOperationRequest_lock = NULL;
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Monitor* Safepoint_lock = NULL;
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Monitor* SerializePage_lock = NULL;
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Monitor* Threads_lock = NULL;
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Monitor* CGC_lock = NULL;
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Monitor* STS_lock = NULL;
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Monitor* FullGCCount_lock = NULL;
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Mutex* SATB_Q_FL_lock = NULL;
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Monitor* SATB_Q_CBL_mon = NULL;
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Mutex* Shared_SATB_Q_lock = NULL;
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Mutex* DirtyCardQ_FL_lock = NULL;
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Monitor* DirtyCardQ_CBL_mon = NULL;
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Mutex* Shared_DirtyCardQ_lock = NULL;
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Mutex* ParGCRareEvent_lock = NULL;
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Mutex* DerivedPointerTableGC_lock = NULL;
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Mutex* Compile_lock = NULL;
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Monitor* MethodCompileQueue_lock = NULL;
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Monitor* CompileThread_lock = NULL;
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Monitor* Compilation_lock = NULL;
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Mutex* CompileTaskAlloc_lock = NULL;
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Mutex* CompileStatistics_lock = NULL;
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Mutex* DirectivesStack_lock = NULL;
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Mutex* MultiArray_lock = NULL;
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Monitor* Terminator_lock = NULL;
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Monitor* BeforeExit_lock = NULL;
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Monitor* Notify_lock = NULL;
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Mutex* ProfilePrint_lock = NULL;
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Mutex* ExceptionCache_lock = NULL;
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Mutex* OsrList_lock = NULL;
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#ifndef PRODUCT
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Mutex* FullGCALot_lock = NULL;
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#endif
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Mutex* Debug1_lock = NULL;
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Mutex* Debug2_lock = NULL;
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Mutex* Debug3_lock = NULL;
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Mutex* tty_lock = NULL;
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Mutex* RawMonitor_lock = NULL;
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Mutex* PerfDataMemAlloc_lock = NULL;
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Mutex* PerfDataManager_lock = NULL;
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Mutex* OopMapCacheAlloc_lock = NULL;
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Mutex* FreeList_lock = NULL;
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Monitor* SecondaryFreeList_lock = NULL;
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Mutex* OldSets_lock = NULL;
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Monitor* RootRegionScan_lock = NULL;
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Mutex* MMUTracker_lock = NULL;
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Monitor* GCTaskManager_lock = NULL;
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Mutex* Management_lock = NULL;
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Monitor* Service_lock = NULL;
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Monitor* PeriodicTask_lock = NULL;
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Monitor* RedefineClasses_lock = NULL;
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#ifdef INCLUDE_TRACE
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Mutex* JfrStacktrace_lock = NULL;
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Monitor* JfrMsg_lock = NULL;
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Mutex* JfrBuffer_lock = NULL;
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Mutex* JfrStream_lock = NULL;
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Mutex* JfrThreadGroups_lock = NULL;
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#endif
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#ifndef SUPPORTS_NATIVE_CX8
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Mutex* UnsafeJlong_lock = NULL;
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#endif
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#define MAX_NUM_MUTEX 128
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static Monitor * _mutex_array[MAX_NUM_MUTEX];
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static int _num_mutex;
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#ifdef ASSERT
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void assert_locked_or_safepoint(const Monitor * lock) {
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// check if this thread owns the lock (common case)
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if (IgnoreLockingAssertions) return;
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assert(lock != NULL, "Need non-NULL lock");
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if (lock->owned_by_self()) return;
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if (SafepointSynchronize::is_at_safepoint()) return;
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if (!Universe::is_fully_initialized()) return;
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// see if invoker of VM operation owns it
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VM_Operation* op = VMThread::vm_operation();
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if (op != NULL && op->calling_thread() == lock->owner()) return;
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fatal("must own lock %s", lock->name());
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}
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// a stronger assertion than the above
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void assert_lock_strong(const Monitor * lock) {
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if (IgnoreLockingAssertions) return;
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assert(lock != NULL, "Need non-NULL lock");
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if (lock->owned_by_self()) return;
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fatal("must own lock %s", lock->name());
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}
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#endif
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#define def(var, type, pri, vm_block, safepoint_check_allowed ) { \
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var = new type(Mutex::pri, #var, vm_block, safepoint_check_allowed); \
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assert(_num_mutex < MAX_NUM_MUTEX, "increase MAX_NUM_MUTEX"); \
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_mutex_array[_num_mutex++] = var; \
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}
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void mutex_init() {
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def(tty_lock , Mutex , event, true, Monitor::_safepoint_check_never); // allow to lock in VM
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def(CGC_lock , Monitor, special, true, Monitor::_safepoint_check_never); // coordinate between fore- and background GC
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def(STS_lock , Monitor, leaf, true, Monitor::_safepoint_check_never);
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if (UseConcMarkSweepGC || UseG1GC) {
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def(FullGCCount_lock , Monitor, leaf, true, Monitor::_safepoint_check_never); // in support of ExplicitGCInvokesConcurrent
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}
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if (UseG1GC) {
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def(SATB_Q_FL_lock , Mutex , special, true, Monitor::_safepoint_check_never);
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def(SATB_Q_CBL_mon , Monitor, nonleaf, true, Monitor::_safepoint_check_never);
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def(Shared_SATB_Q_lock , Mutex, nonleaf, true, Monitor::_safepoint_check_never);
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def(DirtyCardQ_FL_lock , Mutex , special, true, Monitor::_safepoint_check_never);
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def(DirtyCardQ_CBL_mon , Monitor, nonleaf, true, Monitor::_safepoint_check_never);
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def(Shared_DirtyCardQ_lock , Mutex, nonleaf, true, Monitor::_safepoint_check_never);
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def(FreeList_lock , Mutex, leaf , true, Monitor::_safepoint_check_never);
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def(SecondaryFreeList_lock , Monitor, leaf , true, Monitor::_safepoint_check_never);
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def(OldSets_lock , Mutex , leaf , true, Monitor::_safepoint_check_never);
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def(RootRegionScan_lock , Monitor, leaf , true, Monitor::_safepoint_check_never);
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def(MMUTracker_lock , Mutex , leaf , true, Monitor::_safepoint_check_never);
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def(StringDedupQueue_lock , Monitor, leaf, true, Monitor::_safepoint_check_never);
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def(StringDedupTable_lock , Mutex , leaf, true, Monitor::_safepoint_check_never);
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}
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def(ParGCRareEvent_lock , Mutex , leaf , true, Monitor::_safepoint_check_sometimes);
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def(DerivedPointerTableGC_lock , Mutex, leaf, true, Monitor::_safepoint_check_never);
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def(CodeCache_lock , Mutex , special, true, Monitor::_safepoint_check_never);
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def(RawMonitor_lock , Mutex, special, true, Monitor::_safepoint_check_never);
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def(OopMapCacheAlloc_lock , Mutex, leaf, true, Monitor::_safepoint_check_always); // used for oop_map_cache allocation.
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def(Patching_lock , Mutex , special, true, Monitor::_safepoint_check_never); // used for safepointing and code patching.
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def(Service_lock , Monitor, special, true, Monitor::_safepoint_check_never); // used for service thread operations
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def(JmethodIdCreation_lock , Mutex , leaf, true, Monitor::_safepoint_check_always); // used for creating jmethodIDs.
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def(SystemDictionary_lock , Monitor, leaf, true, Monitor::_safepoint_check_always); // lookups done by VM thread
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def(Module_lock , Mutex , leaf+2, true, Monitor::_safepoint_check_always);
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def(InlineCacheBuffer_lock , Mutex , leaf, true, Monitor::_safepoint_check_always);
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def(VMStatistic_lock , Mutex , leaf, false, Monitor::_safepoint_check_always);
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def(ExpandHeap_lock , Mutex , leaf, true, Monitor::_safepoint_check_always); // Used during compilation by VM thread
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def(JNIHandleBlockFreeList_lock , Mutex , leaf, true, Monitor::_safepoint_check_never); // handles are used by VM thread
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def(SignatureHandlerLibrary_lock , Mutex , leaf, false, Monitor::_safepoint_check_always);
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def(SymbolTable_lock , Mutex , leaf+2, true, Monitor::_safepoint_check_always);
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def(StringTable_lock , Mutex , leaf, true, Monitor::_safepoint_check_always);
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def(ProfilePrint_lock , Mutex , leaf, false, Monitor::_safepoint_check_always); // serial profile printing
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def(ExceptionCache_lock , Mutex , leaf, false, Monitor::_safepoint_check_always); // serial profile printing
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def(OsrList_lock , Mutex , leaf, true, Monitor::_safepoint_check_never);
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def(Debug1_lock , Mutex , leaf, true, Monitor::_safepoint_check_never);
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#ifndef PRODUCT
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def(FullGCALot_lock , Mutex , leaf, false, Monitor::_safepoint_check_always); // a lock to make FullGCALot MT safe
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#endif
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def(BeforeExit_lock , Monitor, leaf, true, Monitor::_safepoint_check_always);
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def(PerfDataMemAlloc_lock , Mutex , leaf, true, Monitor::_safepoint_check_always); // used for allocating PerfData memory for performance data
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def(PerfDataManager_lock , Mutex , leaf, true, Monitor::_safepoint_check_always); // used for synchronized access to PerfDataManager resources
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// CMS_modUnionTable_lock leaf
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// CMS_bitMap_lock leaf 1
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// CMS_freeList_lock leaf 2
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def(Safepoint_lock , Monitor, safepoint, true, Monitor::_safepoint_check_sometimes); // locks SnippetCache_lock/Threads_lock
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def(Threads_lock , Monitor, barrier, true, Monitor::_safepoint_check_sometimes);
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def(VMOperationQueue_lock , Monitor, nonleaf, true, Monitor::_safepoint_check_sometimes); // VM_thread allowed to block on these
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def(VMOperationRequest_lock , Monitor, nonleaf, true, Monitor::_safepoint_check_sometimes);
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def(RetData_lock , Mutex , nonleaf, false, Monitor::_safepoint_check_always);
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def(Terminator_lock , Monitor, nonleaf, true, Monitor::_safepoint_check_sometimes);
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def(VtableStubs_lock , Mutex , nonleaf, true, Monitor::_safepoint_check_always);
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def(Notify_lock , Monitor, nonleaf, true, Monitor::_safepoint_check_always);
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def(JNIGlobalHandle_lock , Mutex , nonleaf, true, Monitor::_safepoint_check_always); // locks JNIHandleBlockFreeList_lock
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def(JNICritical_lock , Monitor, nonleaf, true, Monitor::_safepoint_check_always); // used for JNI critical regions
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def(AdapterHandlerLibrary_lock , Mutex , nonleaf, true, Monitor::_safepoint_check_always);
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def(Heap_lock , Monitor, nonleaf+1, false, Monitor::_safepoint_check_sometimes);
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def(JfieldIdCreation_lock , Mutex , nonleaf+1, true, Monitor::_safepoint_check_always); // jfieldID, Used in VM_Operation
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def(MemberNameTable_lock , Mutex , nonleaf+1, false, Monitor::_safepoint_check_always); // Used to protect MemberNameTable
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def(CompiledIC_lock , Mutex , nonleaf+2, false, Monitor::_safepoint_check_always); // locks VtableStubs_lock, InlineCacheBuffer_lock
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def(CompileTaskAlloc_lock , Mutex , nonleaf+2, true, Monitor::_safepoint_check_always);
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def(CompileStatistics_lock , Mutex , nonleaf+2, false, Monitor::_safepoint_check_always);
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def(DirectivesStack_lock , Mutex , special, true, Monitor::_safepoint_check_never);
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def(MultiArray_lock , Mutex , nonleaf+2, false, Monitor::_safepoint_check_always); // locks SymbolTable_lock
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def(JvmtiThreadState_lock , Mutex , nonleaf+2, false, Monitor::_safepoint_check_always); // Used by JvmtiThreadState/JvmtiEventController
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def(Management_lock , Mutex , nonleaf+2, false, Monitor::_safepoint_check_always); // used for JVM management
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def(Compile_lock , Mutex , nonleaf+3, true, Monitor::_safepoint_check_sometimes);
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def(MethodData_lock , Mutex , nonleaf+3, false, Monitor::_safepoint_check_always);
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def(TouchedMethodLog_lock , Mutex , nonleaf+3, false, Monitor::_safepoint_check_always);
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def(MethodCompileQueue_lock , Monitor, nonleaf+4, true, Monitor::_safepoint_check_always);
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def(Debug2_lock , Mutex , nonleaf+4, true, Monitor::_safepoint_check_never);
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def(Debug3_lock , Mutex , nonleaf+4, true, Monitor::_safepoint_check_never);
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def(CompileThread_lock , Monitor, nonleaf+5, false, Monitor::_safepoint_check_always);
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def(PeriodicTask_lock , Monitor, nonleaf+5, true, Monitor::_safepoint_check_sometimes);
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def(RedefineClasses_lock , Monitor, nonleaf+5, true, Monitor::_safepoint_check_always);
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if (WhiteBoxAPI) {
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def(Compilation_lock , Monitor, leaf, false, Monitor::_safepoint_check_never);
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}
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#ifdef INCLUDE_TRACE
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def(JfrMsg_lock , Monitor, leaf, true, Monitor::_safepoint_check_always);
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def(JfrBuffer_lock , Mutex, leaf, true, Monitor::_safepoint_check_never);
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def(JfrThreadGroups_lock , Mutex, leaf, true, Monitor::_safepoint_check_always);
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def(JfrStream_lock , Mutex, nonleaf, true, Monitor::_safepoint_check_never);
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def(JfrStacktrace_lock , Mutex, special, true, Monitor::_safepoint_check_sometimes);
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#endif
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#ifndef SUPPORTS_NATIVE_CX8
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def(UnsafeJlong_lock , Mutex, special, false, Monitor::_safepoint_check_never);
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#endif
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}
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GCMutexLocker::GCMutexLocker(Monitor * mutex) {
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if (SafepointSynchronize::is_at_safepoint()) {
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_locked = false;
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} else {
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_mutex = mutex;
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_locked = true;
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_mutex->lock();
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}
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}
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// Print all mutexes/monitors that are currently owned by a thread; called
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// by fatal error handler.
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void print_owned_locks_on_error(outputStream* st) {
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st->print("VM Mutex/Monitor currently owned by a thread: ");
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bool none = true;
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for (int i = 0; i < _num_mutex; i++) {
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// see if it has an owner
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if (_mutex_array[i]->owner() != NULL) {
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if (none) {
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// print format used by Mutex::print_on_error()
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st->print_cr(" ([mutex/lock_event])");
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none = false;
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}
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_mutex_array[i]->print_on_error(st);
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st->cr();
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}
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}
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if (none) st->print_cr("None");
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}
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