Mercurial > hg > truffle
annotate src/share/vm/runtime/mutexLocker.cpp @ 609:ea20d7ce26b0
6800721: 3/4 JavaThread::jvmti_thread_state() and JvmtiThreadState::state_for() robustness
Summary: Check for NULL return values from jvmti_thread_state() and state_for() and return a JVM TI error code as appropriate.
Reviewed-by: coleenp, swamyv
author | dcubed |
---|---|
date | Mon, 02 Mar 2009 14:00:23 -0700 |
parents | 1ee8caae33af |
children | 315a5d70b295 |
rev | line source |
---|---|
0 | 1 /* |
196 | 2 * Copyright 1997-2008 Sun Microsystems, Inc. All Rights Reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 #include "incls/_precompiled.incl" | |
26 #include "incls/_mutexLocker.cpp.incl" | |
27 | |
28 // Mutexes used in the VM (see comment in mutexLocker.hpp): | |
29 // | |
30 // Note that the following pointers are effectively final -- after having been | |
31 // set at JVM startup-time, they should never be subsequently mutated. | |
32 // Instead of using pointers to malloc()ed monitors and mutexes we should consider | |
33 // eliminating the indirection and using instances instead. | |
34 // Consider using GCC's __read_mostly. | |
35 | |
36 Mutex* Patching_lock = NULL; | |
37 Monitor* SystemDictionary_lock = NULL; | |
38 Mutex* PackageTable_lock = NULL; | |
39 Mutex* CompiledIC_lock = NULL; | |
40 Mutex* InlineCacheBuffer_lock = NULL; | |
41 Mutex* VMStatistic_lock = NULL; | |
42 Mutex* JNIGlobalHandle_lock = NULL; | |
43 Mutex* JNIHandleBlockFreeList_lock = NULL; | |
44 Mutex* JNICachedItableIndex_lock = NULL; | |
45 Mutex* JmethodIdCreation_lock = NULL; | |
46 Mutex* JfieldIdCreation_lock = NULL; | |
47 Monitor* JNICritical_lock = NULL; | |
48 Mutex* JvmtiThreadState_lock = NULL; | |
49 Monitor* JvmtiPendingEvent_lock = NULL; | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
50 Monitor* Heap_lock = NULL; |
0 | 51 Mutex* ExpandHeap_lock = NULL; |
52 Mutex* AdapterHandlerLibrary_lock = NULL; | |
53 Mutex* SignatureHandlerLibrary_lock = NULL; | |
54 Mutex* VtableStubs_lock = NULL; | |
55 Mutex* SymbolTable_lock = NULL; | |
56 Mutex* StringTable_lock = NULL; | |
57 Mutex* CodeCache_lock = NULL; | |
58 Mutex* MethodData_lock = NULL; | |
59 Mutex* RetData_lock = NULL; | |
60 Monitor* VMOperationQueue_lock = NULL; | |
61 Monitor* VMOperationRequest_lock = NULL; | |
62 Monitor* Safepoint_lock = NULL; | |
63 Monitor* SerializePage_lock = NULL; | |
64 Monitor* Threads_lock = NULL; | |
65 Monitor* CGC_lock = NULL; | |
66 Mutex* STS_init_lock = NULL; | |
67 Monitor* SLT_lock = NULL; | |
68 Monitor* iCMS_lock = NULL; | |
69 Monitor* FullGCCount_lock = NULL; | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
70 Monitor* CMark_lock = NULL; |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
71 Monitor* ZF_mon = NULL; |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
72 Monitor* Cleanup_mon = NULL; |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
73 Monitor* G1ConcRefine_mon = NULL; |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
74 Mutex* SATB_Q_FL_lock = NULL; |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
75 Monitor* SATB_Q_CBL_mon = NULL; |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
76 Mutex* Shared_SATB_Q_lock = NULL; |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
77 Mutex* DirtyCardQ_FL_lock = NULL; |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
78 Monitor* DirtyCardQ_CBL_mon = NULL; |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
79 Mutex* Shared_DirtyCardQ_lock = NULL; |
0 | 80 Mutex* ParGCRareEvent_lock = NULL; |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
81 Mutex* EvacFailureStack_lock = NULL; |
0 | 82 Mutex* DerivedPointerTableGC_lock = NULL; |
83 Mutex* Compile_lock = NULL; | |
84 Monitor* MethodCompileQueue_lock = NULL; | |
85 #ifdef TIERED | |
86 Monitor* C1_lock = NULL; | |
87 #endif // TIERED | |
88 Monitor* CompileThread_lock = NULL; | |
89 Mutex* CompileTaskAlloc_lock = NULL; | |
90 Mutex* CompileStatistics_lock = NULL; | |
91 Mutex* MultiArray_lock = NULL; | |
92 Monitor* Terminator_lock = NULL; | |
93 Monitor* BeforeExit_lock = NULL; | |
94 Monitor* Notify_lock = NULL; | |
95 Monitor* Interrupt_lock = NULL; | |
96 Monitor* ProfileVM_lock = NULL; | |
97 Mutex* ProfilePrint_lock = NULL; | |
98 Mutex* ExceptionCache_lock = NULL; | |
99 Monitor* ObjAllocPost_lock = NULL; | |
100 Mutex* OsrList_lock = NULL; | |
101 #ifndef PRODUCT | |
102 Mutex* FullGCALot_lock = NULL; | |
103 #endif | |
104 | |
105 Mutex* Debug1_lock = NULL; | |
106 Mutex* Debug2_lock = NULL; | |
107 Mutex* Debug3_lock = NULL; | |
108 | |
109 Mutex* tty_lock = NULL; | |
110 | |
111 Mutex* RawMonitor_lock = NULL; | |
112 Mutex* PerfDataMemAlloc_lock = NULL; | |
113 Mutex* PerfDataManager_lock = NULL; | |
114 Mutex* OopMapCacheAlloc_lock = NULL; | |
115 | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
116 Mutex* MMUTracker_lock = NULL; |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
117 Mutex* HotCardCache_lock = NULL; |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
118 |
0 | 119 Monitor* GCTaskManager_lock = NULL; |
120 | |
121 Mutex* Management_lock = NULL; | |
122 Monitor* LowMemory_lock = NULL; | |
123 | |
124 #define MAX_NUM_MUTEX 128 | |
125 static Monitor * _mutex_array[MAX_NUM_MUTEX]; | |
126 static int _num_mutex; | |
127 | |
128 #ifdef ASSERT | |
129 void assert_locked_or_safepoint(const Monitor * lock) { | |
130 // check if this thread owns the lock (common case) | |
131 if (IgnoreLockingAssertions) return; | |
132 assert(lock != NULL, "Need non-NULL lock"); | |
133 if (lock->owned_by_self()) return; | |
134 if (SafepointSynchronize::is_at_safepoint()) return; | |
135 if (!Universe::is_fully_initialized()) return; | |
136 // see if invoker of VM operation owns it | |
137 VM_Operation* op = VMThread::vm_operation(); | |
138 if (op != NULL && op->calling_thread() == lock->owner()) return; | |
139 fatal1("must own lock %s", lock->name()); | |
140 } | |
141 | |
142 // a stronger assertion than the above | |
143 void assert_lock_strong(const Monitor * lock) { | |
144 if (IgnoreLockingAssertions) return; | |
145 assert(lock != NULL, "Need non-NULL lock"); | |
146 if (lock->owned_by_self()) return; | |
147 fatal1("must own lock %s", lock->name()); | |
148 } | |
149 #endif | |
150 | |
151 #define def(var, type, pri, vm_block) { \ | |
152 var = new type(Mutex::pri, #var, vm_block); \ | |
153 assert(_num_mutex < MAX_NUM_MUTEX, \ | |
154 "increase MAX_NUM_MUTEX"); \ | |
155 _mutex_array[_num_mutex++] = var; \ | |
156 } | |
157 | |
158 void mutex_init() { | |
159 def(tty_lock , Mutex , event, true ); // allow to lock in VM | |
160 | |
161 def(CGC_lock , Monitor, special, true ); // coordinate between fore- and background GC | |
162 def(STS_init_lock , Mutex, leaf, true ); | |
163 if (UseConcMarkSweepGC) { | |
164 def(iCMS_lock , Monitor, special, true ); // CMS incremental mode start/stop notification | |
165 def(FullGCCount_lock , Monitor, leaf, true ); // in support of ExplicitGCInvokesConcurrent | |
166 } | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
167 if (UseG1GC) { |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
168 def(CMark_lock , Monitor, nonleaf, true ); // coordinate concurrent mark thread |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
169 def(ZF_mon , Monitor, leaf, true ); |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
170 def(Cleanup_mon , Monitor, nonleaf, true ); |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
171 def(G1ConcRefine_mon , Monitor, nonleaf, true ); |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
172 def(SATB_Q_FL_lock , Mutex , special, true ); |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
173 def(SATB_Q_CBL_mon , Monitor, nonleaf, true ); |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
174 def(Shared_SATB_Q_lock , Mutex, nonleaf, true ); |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
175 |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
176 def(DirtyCardQ_FL_lock , Mutex , special, true ); |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
177 def(DirtyCardQ_CBL_mon , Monitor, nonleaf, true ); |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
178 def(Shared_DirtyCardQ_lock , Mutex, nonleaf, true ); |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
179 |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
180 def(MMUTracker_lock , Mutex , leaf , true ); |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
181 def(HotCardCache_lock , Mutex , special , true ); |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
182 def(EvacFailureStack_lock , Mutex , nonleaf , true ); |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
183 } |
0 | 184 def(ParGCRareEvent_lock , Mutex , leaf , true ); |
185 def(DerivedPointerTableGC_lock , Mutex, leaf, true ); | |
186 def(CodeCache_lock , Mutex , special, true ); | |
187 def(Interrupt_lock , Monitor, special, true ); // used for interrupt processing | |
188 def(RawMonitor_lock , Mutex, special, true ); | |
189 def(OopMapCacheAlloc_lock , Mutex, leaf, true ); // used for oop_map_cache allocation. | |
190 | |
191 def(Patching_lock , Mutex , special, true ); // used for safepointing and code patching. | |
192 def(ObjAllocPost_lock , Monitor, special, false); | |
193 def(LowMemory_lock , Monitor, special, true ); // used for low memory detection | |
194 def(JmethodIdCreation_lock , Mutex , leaf, true ); // used for creating jmethodIDs. | |
195 | |
196 def(SystemDictionary_lock , Monitor, leaf, true ); // lookups done by VM thread | |
197 def(PackageTable_lock , Mutex , leaf, false); | |
198 def(InlineCacheBuffer_lock , Mutex , leaf, true ); | |
199 def(VMStatistic_lock , Mutex , leaf, false); | |
200 def(ExpandHeap_lock , Mutex , leaf, true ); // Used during compilation by VM thread | |
201 def(JNIHandleBlockFreeList_lock , Mutex , leaf, true ); // handles are used by VM thread | |
202 def(SignatureHandlerLibrary_lock , Mutex , leaf, false); | |
203 def(SymbolTable_lock , Mutex , leaf, true ); | |
204 def(StringTable_lock , Mutex , leaf, true ); | |
205 def(ProfilePrint_lock , Mutex , leaf, false); // serial profile printing | |
206 def(ExceptionCache_lock , Mutex , leaf, false); // serial profile printing | |
207 def(OsrList_lock , Mutex , leaf, true ); | |
208 def(Debug1_lock , Mutex , leaf, true ); | |
209 #ifndef PRODUCT | |
210 def(FullGCALot_lock , Mutex , leaf, false); // a lock to make FullGCALot MT safe | |
211 #endif | |
212 def(BeforeExit_lock , Monitor, leaf, true ); | |
213 def(PerfDataMemAlloc_lock , Mutex , leaf, true ); // used for allocating PerfData memory for performance data | |
214 def(PerfDataManager_lock , Mutex , leaf, true ); // used for synchronized access to PerfDataManager resources | |
215 | |
216 // CMS_modUnionTable_lock leaf | |
217 // CMS_bitMap_lock leaf + 1 | |
218 // CMS_freeList_lock leaf + 2 | |
219 | |
220 def(Safepoint_lock , Monitor, safepoint, true ); // locks SnippetCache_lock/Threads_lock | |
221 | |
222 def(Threads_lock , Monitor, barrier, true ); | |
223 | |
224 def(VMOperationQueue_lock , Monitor, nonleaf, true ); // VM_thread allowed to block on these | |
225 def(VMOperationRequest_lock , Monitor, nonleaf, true ); | |
226 def(RetData_lock , Mutex , nonleaf, false); | |
227 def(Terminator_lock , Monitor, nonleaf, true ); | |
228 def(VtableStubs_lock , Mutex , nonleaf, true ); | |
229 def(Notify_lock , Monitor, nonleaf, true ); | |
230 def(JNIGlobalHandle_lock , Mutex , nonleaf, true ); // locks JNIHandleBlockFreeList_lock | |
231 def(JNICritical_lock , Monitor, nonleaf, true ); // used for JNI critical regions | |
232 def(AdapterHandlerLibrary_lock , Mutex , nonleaf, true); | |
233 if (UseConcMarkSweepGC) { | |
234 def(SLT_lock , Monitor, nonleaf, false ); | |
235 // used in CMS GC for locking PLL lock | |
236 } | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
55
diff
changeset
|
237 def(Heap_lock , Monitor, nonleaf+1, false); |
0 | 238 def(JfieldIdCreation_lock , Mutex , nonleaf+1, true ); // jfieldID, Used in VM_Operation |
239 def(JNICachedItableIndex_lock , Mutex , nonleaf+1, false); // Used to cache an itable index during JNI invoke | |
240 | |
241 def(CompiledIC_lock , Mutex , nonleaf+2, false); // locks VtableStubs_lock, InlineCacheBuffer_lock | |
242 def(CompileTaskAlloc_lock , Mutex , nonleaf+2, true ); | |
243 def(CompileStatistics_lock , Mutex , nonleaf+2, false); | |
244 def(MultiArray_lock , Mutex , nonleaf+2, false); // locks SymbolTable_lock | |
245 | |
246 def(JvmtiThreadState_lock , Mutex , nonleaf+2, false); // Used by JvmtiThreadState/JvmtiEventController | |
247 def(JvmtiPendingEvent_lock , Monitor, nonleaf, false); // Used by JvmtiCodeBlobEvents | |
248 def(Management_lock , Mutex , nonleaf+2, false); // used for JVM management | |
249 | |
250 def(Compile_lock , Mutex , nonleaf+3, true ); | |
251 def(MethodData_lock , Mutex , nonleaf+3, false); | |
252 | |
253 def(MethodCompileQueue_lock , Monitor, nonleaf+4, true ); | |
254 def(Debug2_lock , Mutex , nonleaf+4, true ); | |
255 def(Debug3_lock , Mutex , nonleaf+4, true ); | |
256 def(ProfileVM_lock , Monitor, nonleaf+4, false); // used for profiling of the VMThread | |
257 def(CompileThread_lock , Monitor, nonleaf+5, false ); | |
258 #ifdef TIERED | |
259 def(C1_lock , Monitor, nonleaf+5, false ); | |
260 #endif // TIERED | |
261 | |
262 | |
263 } | |
264 | |
265 GCMutexLocker::GCMutexLocker(Monitor * mutex) { | |
266 if (SafepointSynchronize::is_at_safepoint()) { | |
267 _locked = false; | |
268 } else { | |
269 _mutex = mutex; | |
270 _locked = true; | |
271 _mutex->lock(); | |
272 } | |
273 } | |
274 | |
275 // Print all mutexes/monitors that are currently owned by a thread; called | |
276 // by fatal error handler. | |
277 void print_owned_locks_on_error(outputStream* st) { | |
278 st->print("VM Mutex/Monitor currently owned by a thread: "); | |
279 bool none = true; | |
280 for (int i = 0; i < _num_mutex; i++) { | |
281 // see if it has an owner | |
282 if (_mutex_array[i]->owner() != NULL) { | |
283 if (none) { | |
284 // print format used by Mutex::print_on_error() | |
285 st->print_cr(" ([mutex/lock_event])"); | |
286 none = false; | |
287 } | |
288 _mutex_array[i]->print_on_error(st); | |
289 st->cr(); | |
290 } | |
291 } | |
292 if (none) st->print_cr("None"); | |
293 } |