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src/share/vm/runtime/mutexLocker.cpp@b92c45f2bc75 (annotated)

src/share/vm/runtime/mutexLocker.cpp

Wed, 02 Feb 2011 11:35:26 -0500

author

bobv

date

Wed, 02 Feb 2011 11:35:26 -0500

changeset 2508

b92c45f2bc75

parent 2472

0fa27f37d4d4

child 2511

bf8517f4e4d0

permissions

-rw-r--r--

7016023: Enable building ARM and PPC from src/closed repository
Reviewed-by: dholmes, bdelsart

duke@435	1	/*
tonyp@2472	2	* Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
stefank@2314	25	#include "precompiled.hpp"
stefank@2314	26	#include "runtime/mutexLocker.hpp"
stefank@2314	27	#include "runtime/safepoint.hpp"
stefank@2314	28	#include "runtime/threadLocalStorage.hpp"
stefank@2314	29	#include "runtime/vmThread.hpp"
stefank@2314	30	#ifdef TARGET_OS_FAMILY_linux
stefank@2314	31	# include "thread_linux.inline.hpp"
stefank@2314	32	#endif
stefank@2314	33	#ifdef TARGET_OS_FAMILY_solaris
stefank@2314	34	# include "thread_solaris.inline.hpp"
stefank@2314	35	#endif
stefank@2314	36	#ifdef TARGET_OS_FAMILY_windows
stefank@2314	37	# include "thread_windows.inline.hpp"
stefank@2314	38	#endif
duke@435	39
duke@435	40	// Mutexes used in the VM (see comment in mutexLocker.hpp):
duke@435	41	//
duke@435	42	// Note that the following pointers are effectively final -- after having been
duke@435	43	// set at JVM startup-time, they should never be subsequently mutated.
duke@435	44	// Instead of using pointers to malloc()ed monitors and mutexes we should consider
duke@435	45	// eliminating the indirection and using instances instead.
duke@435	46	// Consider using GCC's __read_mostly.
duke@435	47
duke@435	48	Mutex* Patching_lock = NULL;
duke@435	49	Monitor* SystemDictionary_lock = NULL;
duke@435	50	Mutex* PackageTable_lock = NULL;
duke@435	51	Mutex* CompiledIC_lock = NULL;
duke@435	52	Mutex* InlineCacheBuffer_lock = NULL;
duke@435	53	Mutex* VMStatistic_lock = NULL;
duke@435	54	Mutex* JNIGlobalHandle_lock = NULL;
duke@435	55	Mutex* JNIHandleBlockFreeList_lock = NULL;
duke@435	56	Mutex* JNICachedItableIndex_lock = NULL;
duke@435	57	Mutex* JmethodIdCreation_lock = NULL;
duke@435	58	Mutex* JfieldIdCreation_lock = NULL;
duke@435	59	Monitor* JNICritical_lock = NULL;
duke@435	60	Mutex* JvmtiThreadState_lock = NULL;
duke@435	61	Monitor* JvmtiPendingEvent_lock = NULL;
ysr@777	62	Monitor* Heap_lock = NULL;
duke@435	63	Mutex* ExpandHeap_lock = NULL;
duke@435	64	Mutex* AdapterHandlerLibrary_lock = NULL;
duke@435	65	Mutex* SignatureHandlerLibrary_lock = NULL;
duke@435	66	Mutex* VtableStubs_lock = NULL;
duke@435	67	Mutex* SymbolTable_lock = NULL;
duke@435	68	Mutex* StringTable_lock = NULL;
duke@435	69	Mutex* CodeCache_lock = NULL;
duke@435	70	Mutex* MethodData_lock = NULL;
duke@435	71	Mutex* RetData_lock = NULL;
duke@435	72	Monitor* VMOperationQueue_lock = NULL;
duke@435	73	Monitor* VMOperationRequest_lock = NULL;
duke@435	74	Monitor* Safepoint_lock = NULL;
duke@435	75	Monitor* SerializePage_lock = NULL;
duke@435	76	Monitor* Threads_lock = NULL;
duke@435	77	Monitor* CGC_lock = NULL;
duke@435	78	Mutex* STS_init_lock = NULL;
duke@435	79	Monitor* SLT_lock = NULL;
duke@435	80	Monitor* iCMS_lock = NULL;
duke@435	81	Monitor* FullGCCount_lock = NULL;
ysr@777	82	Monitor* CMark_lock = NULL;
tonyp@1793	83	Mutex* CMRegionStack_lock = NULL;
ysr@777	84	Mutex* SATB_Q_FL_lock = NULL;
ysr@777	85	Monitor* SATB_Q_CBL_mon = NULL;
ysr@777	86	Mutex* Shared_SATB_Q_lock = NULL;
ysr@777	87	Mutex* DirtyCardQ_FL_lock = NULL;
ysr@777	88	Monitor* DirtyCardQ_CBL_mon = NULL;
ysr@777	89	Mutex* Shared_DirtyCardQ_lock = NULL;
duke@435	90	Mutex* ParGCRareEvent_lock = NULL;
ysr@777	91	Mutex* EvacFailureStack_lock = NULL;
duke@435	92	Mutex* DerivedPointerTableGC_lock = NULL;
duke@435	93	Mutex* Compile_lock = NULL;
duke@435	94	Monitor* MethodCompileQueue_lock = NULL;
duke@435	95	Monitor* CompileThread_lock = NULL;
duke@435	96	Mutex* CompileTaskAlloc_lock = NULL;
duke@435	97	Mutex* CompileStatistics_lock = NULL;
duke@435	98	Mutex* MultiArray_lock = NULL;
duke@435	99	Monitor* Terminator_lock = NULL;
duke@435	100	Monitor* BeforeExit_lock = NULL;
duke@435	101	Monitor* Notify_lock = NULL;
duke@435	102	Monitor* Interrupt_lock = NULL;
duke@435	103	Monitor* ProfileVM_lock = NULL;
duke@435	104	Mutex* ProfilePrint_lock = NULL;
duke@435	105	Mutex* ExceptionCache_lock = NULL;
duke@435	106	Monitor* ObjAllocPost_lock = NULL;
duke@435	107	Mutex* OsrList_lock = NULL;
duke@435	108	#ifndef PRODUCT
duke@435	109	Mutex* FullGCALot_lock = NULL;
duke@435	110	#endif
duke@435	111
duke@435	112	Mutex* Debug1_lock = NULL;
duke@435	113	Mutex* Debug2_lock = NULL;
duke@435	114	Mutex* Debug3_lock = NULL;
duke@435	115
duke@435	116	Mutex* tty_lock = NULL;
duke@435	117
duke@435	118	Mutex* RawMonitor_lock = NULL;
duke@435	119	Mutex* PerfDataMemAlloc_lock = NULL;
duke@435	120	Mutex* PerfDataManager_lock = NULL;
duke@435	121	Mutex* OopMapCacheAlloc_lock = NULL;
duke@435	122
tonyp@2472	123	Mutex* FreeList_lock = NULL;
tonyp@2472	124	Monitor* SecondaryFreeList_lock = NULL;
tonyp@2472	125	Mutex* OldSets_lock = NULL;
ysr@777	126	Mutex* MMUTracker_lock = NULL;
ysr@777	127	Mutex* HotCardCache_lock = NULL;
ysr@777	128
duke@435	129	Monitor* GCTaskManager_lock = NULL;
duke@435	130
duke@435	131	Mutex* Management_lock = NULL;
duke@435	132	Monitor* LowMemory_lock = NULL;
duke@435	133
duke@435	134	#define MAX_NUM_MUTEX 128
duke@435	135	static Monitor * _mutex_array[MAX_NUM_MUTEX];
duke@435	136	static int _num_mutex;
duke@435	137
duke@435	138	#ifdef ASSERT
duke@435	139	void assert_locked_or_safepoint(const Monitor * lock) {
duke@435	140	// check if this thread owns the lock (common case)
duke@435	141	if (IgnoreLockingAssertions) return;
duke@435	142	assert(lock != NULL, "Need non-NULL lock");
duke@435	143	if (lock->owned_by_self()) return;
duke@435	144	if (SafepointSynchronize::is_at_safepoint()) return;
duke@435	145	if (!Universe::is_fully_initialized()) return;
duke@435	146	// see if invoker of VM operation owns it
duke@435	147	VM_Operation* op = VMThread::vm_operation();
duke@435	148	if (op != NULL && op->calling_thread() == lock->owner()) return;
jcoomes@1845	149	fatal(err_msg("must own lock %s", lock->name()));
duke@435	150	}
duke@435	151
duke@435	152	// a stronger assertion than the above
duke@435	153	void assert_lock_strong(const Monitor * lock) {
duke@435	154	if (IgnoreLockingAssertions) return;
duke@435	155	assert(lock != NULL, "Need non-NULL lock");
duke@435	156	if (lock->owned_by_self()) return;
jcoomes@1845	157	fatal(err_msg("must own lock %s", lock->name()));
duke@435	158	}
duke@435	159	#endif
duke@435	160
duke@435	161	#define def(var, type, pri, vm_block) { \
duke@435	162	var = new type(Mutex::pri, #var, vm_block); \
duke@435	163	assert(_num_mutex < MAX_NUM_MUTEX, \
duke@435	164	"increase MAX_NUM_MUTEX"); \
duke@435	165	_mutex_array[_num_mutex++] = var; \
duke@435	166	}
duke@435	167
duke@435	168	void mutex_init() {
duke@435	169	def(tty_lock , Mutex , event, true ); // allow to lock in VM
duke@435	170
duke@435	171	def(CGC_lock , Monitor, special, true ); // coordinate between fore- and background GC
duke@435	172	def(STS_init_lock , Mutex, leaf, true );
duke@435	173	if (UseConcMarkSweepGC) {
duke@435	174	def(iCMS_lock , Monitor, special, true ); // CMS incremental mode start/stop notification
tonyp@2011	175	}
tonyp@2011	176	if (UseConcMarkSweepGC || UseG1GC) {
duke@435	177	def(FullGCCount_lock , Monitor, leaf, true ); // in support of ExplicitGCInvokesConcurrent
duke@435	178	}
ysr@777	179	if (UseG1GC) {
ysr@777	180	def(CMark_lock , Monitor, nonleaf, true ); // coordinate concurrent mark thread
tonyp@1793	181	def(CMRegionStack_lock , Mutex, leaf, true );
ysr@777	182	def(SATB_Q_FL_lock , Mutex , special, true );
ysr@777	183	def(SATB_Q_CBL_mon , Monitor, nonleaf, true );
ysr@777	184	def(Shared_SATB_Q_lock , Mutex, nonleaf, true );
ysr@777	185
ysr@777	186	def(DirtyCardQ_FL_lock , Mutex , special, true );
ysr@777	187	def(DirtyCardQ_CBL_mon , Monitor, nonleaf, true );
ysr@777	188	def(Shared_DirtyCardQ_lock , Mutex, nonleaf, true );
ysr@777	189
tonyp@2472	190	def(FreeList_lock , Mutex, leaf , true );
tonyp@2472	191	def(SecondaryFreeList_lock , Monitor, leaf , true );
tonyp@2472	192	def(OldSets_lock , Mutex , leaf , true );
ysr@777	193	def(MMUTracker_lock , Mutex , leaf , true );
ysr@777	194	def(HotCardCache_lock , Mutex , special , true );
ysr@777	195	def(EvacFailureStack_lock , Mutex , nonleaf , true );
ysr@777	196	}
duke@435	197	def(ParGCRareEvent_lock , Mutex , leaf , true );
duke@435	198	def(DerivedPointerTableGC_lock , Mutex, leaf, true );
duke@435	199	def(CodeCache_lock , Mutex , special, true );
duke@435	200	def(Interrupt_lock , Monitor, special, true ); // used for interrupt processing
duke@435	201	def(RawMonitor_lock , Mutex, special, true );
duke@435	202	def(OopMapCacheAlloc_lock , Mutex, leaf, true ); // used for oop_map_cache allocation.
duke@435	203
duke@435	204	def(Patching_lock , Mutex , special, true ); // used for safepointing and code patching.
duke@435	205	def(ObjAllocPost_lock , Monitor, special, false);
duke@435	206	def(LowMemory_lock , Monitor, special, true ); // used for low memory detection
duke@435	207	def(JmethodIdCreation_lock , Mutex , leaf, true ); // used for creating jmethodIDs.
duke@435	208
duke@435	209	def(SystemDictionary_lock , Monitor, leaf, true ); // lookups done by VM thread
duke@435	210	def(PackageTable_lock , Mutex , leaf, false);
duke@435	211	def(InlineCacheBuffer_lock , Mutex , leaf, true );
duke@435	212	def(VMStatistic_lock , Mutex , leaf, false);
duke@435	213	def(ExpandHeap_lock , Mutex , leaf, true ); // Used during compilation by VM thread
duke@435	214	def(JNIHandleBlockFreeList_lock , Mutex , leaf, true ); // handles are used by VM thread
duke@435	215	def(SignatureHandlerLibrary_lock , Mutex , leaf, false);
duke@435	216	def(SymbolTable_lock , Mutex , leaf, true );
duke@435	217	def(StringTable_lock , Mutex , leaf, true );
duke@435	218	def(ProfilePrint_lock , Mutex , leaf, false); // serial profile printing
duke@435	219	def(ExceptionCache_lock , Mutex , leaf, false); // serial profile printing
duke@435	220	def(OsrList_lock , Mutex , leaf, true );
duke@435	221	def(Debug1_lock , Mutex , leaf, true );
duke@435	222	#ifndef PRODUCT
duke@435	223	def(FullGCALot_lock , Mutex , leaf, false); // a lock to make FullGCALot MT safe
duke@435	224	#endif
duke@435	225	def(BeforeExit_lock , Monitor, leaf, true );
duke@435	226	def(PerfDataMemAlloc_lock , Mutex , leaf, true ); // used for allocating PerfData memory for performance data
duke@435	227	def(PerfDataManager_lock , Mutex , leaf, true ); // used for synchronized access to PerfDataManager resources
duke@435	228
duke@435	229	// CMS_modUnionTable_lock leaf
duke@435	230	// CMS_bitMap_lock leaf + 1
duke@435	231	// CMS_freeList_lock leaf + 2
duke@435	232
duke@435	233	def(Safepoint_lock , Monitor, safepoint, true ); // locks SnippetCache_lock/Threads_lock
duke@435	234
duke@435	235	def(Threads_lock , Monitor, barrier, true );
duke@435	236
duke@435	237	def(VMOperationQueue_lock , Monitor, nonleaf, true ); // VM_thread allowed to block on these
duke@435	238	def(VMOperationRequest_lock , Monitor, nonleaf, true );
duke@435	239	def(RetData_lock , Mutex , nonleaf, false);
duke@435	240	def(Terminator_lock , Monitor, nonleaf, true );
duke@435	241	def(VtableStubs_lock , Mutex , nonleaf, true );
duke@435	242	def(Notify_lock , Monitor, nonleaf, true );
duke@435	243	def(JNIGlobalHandle_lock , Mutex , nonleaf, true ); // locks JNIHandleBlockFreeList_lock
duke@435	244	def(JNICritical_lock , Monitor, nonleaf, true ); // used for JNI critical regions
duke@435	245	def(AdapterHandlerLibrary_lock , Mutex , nonleaf, true);
duke@435	246	if (UseConcMarkSweepGC) {
duke@435	247	def(SLT_lock , Monitor, nonleaf, false );
duke@435	248	// used in CMS GC for locking PLL lock
duke@435	249	}
ysr@777	250	def(Heap_lock , Monitor, nonleaf+1, false);
duke@435	251	def(JfieldIdCreation_lock , Mutex , nonleaf+1, true ); // jfieldID, Used in VM_Operation
duke@435	252	def(JNICachedItableIndex_lock , Mutex , nonleaf+1, false); // Used to cache an itable index during JNI invoke
duke@435	253
duke@435	254	def(CompiledIC_lock , Mutex , nonleaf+2, false); // locks VtableStubs_lock, InlineCacheBuffer_lock
duke@435	255	def(CompileTaskAlloc_lock , Mutex , nonleaf+2, true );
duke@435	256	def(CompileStatistics_lock , Mutex , nonleaf+2, false);
duke@435	257	def(MultiArray_lock , Mutex , nonleaf+2, false); // locks SymbolTable_lock
duke@435	258
duke@435	259	def(JvmtiThreadState_lock , Mutex , nonleaf+2, false); // Used by JvmtiThreadState/JvmtiEventController
duke@435	260	def(JvmtiPendingEvent_lock , Monitor, nonleaf, false); // Used by JvmtiCodeBlobEvents
duke@435	261	def(Management_lock , Mutex , nonleaf+2, false); // used for JVM management
duke@435	262
duke@435	263	def(Compile_lock , Mutex , nonleaf+3, true );
duke@435	264	def(MethodData_lock , Mutex , nonleaf+3, false);
duke@435	265
duke@435	266	def(MethodCompileQueue_lock , Monitor, nonleaf+4, true );
duke@435	267	def(Debug2_lock , Mutex , nonleaf+4, true );
duke@435	268	def(Debug3_lock , Mutex , nonleaf+4, true );
duke@435	269	def(ProfileVM_lock , Monitor, nonleaf+4, false); // used for profiling of the VMThread
duke@435	270	def(CompileThread_lock , Monitor, nonleaf+5, false );
duke@435	271	}
duke@435	272
duke@435	273	GCMutexLocker::GCMutexLocker(Monitor * mutex) {
duke@435	274	if (SafepointSynchronize::is_at_safepoint()) {
duke@435	275	_locked = false;
duke@435	276	} else {
duke@435	277	_mutex = mutex;
duke@435	278	_locked = true;
duke@435	279	_mutex->lock();
duke@435	280	}
duke@435	281	}
duke@435	282
duke@435	283	// Print all mutexes/monitors that are currently owned by a thread; called
duke@435	284	// by fatal error handler.
duke@435	285	void print_owned_locks_on_error(outputStream* st) {
duke@435	286	st->print("VM Mutex/Monitor currently owned by a thread: ");
duke@435	287	bool none = true;
duke@435	288	for (int i = 0; i < _num_mutex; i++) {
duke@435	289	// see if it has an owner
duke@435	290	if (_mutex_array[i]->owner() != NULL) {
duke@435	291	if (none) {
duke@435	292	// print format used by Mutex::print_on_error()
duke@435	293	st->print_cr(" ([mutex/lock_event])");
duke@435	294	none = false;
duke@435	295	}
duke@435	296	_mutex_array[i]->print_on_error(st);
duke@435	297	st->cr();
duke@435	298	}
duke@435	299	}
duke@435	300	if (none) st->print_cr("None");
duke@435	301	}