Mercurial > hg > truffle
annotate src/share/vm/runtime/vm_operations.hpp @ 4128:f1391adc6681
7112034: Parallel CMS fails to properly mark reference objects
Summary: Enabled reference processing when work stealing during concurrent marking
Reviewed-by: jmasa, brutisso
author | stefank |
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date | Mon, 28 Nov 2011 10:19:26 +0100 |
parents | 1d1603768966 |
children | 94ec88ca68e2 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_RUNTIME_VM_OPERATIONS_HPP |
26 #define SHARE_VM_RUNTIME_VM_OPERATIONS_HPP | |
27 | |
28 #include "classfile/javaClasses.hpp" | |
29 #include "memory/allocation.hpp" | |
30 #include "oops/oop.hpp" | |
31 #include "runtime/thread.hpp" | |
32 #include "utilities/top.hpp" | |
33 | |
0 | 34 // The following classes are used for operations |
35 // initiated by a Java thread but that must | |
36 // take place in the VMThread. | |
37 | |
38 #define VM_OP_ENUM(type) VMOp_##type, | |
39 | |
40 // Note: When new VM_XXX comes up, add 'XXX' to the template table. | |
41 #define VM_OPS_DO(template) \ | |
42 template(Dummy) \ | |
43 template(ThreadStop) \ | |
44 template(ThreadDump) \ | |
45 template(PrintThreads) \ | |
46 template(FindDeadlocks) \ | |
47 template(ForceSafepoint) \ | |
48 template(ForceAsyncSafepoint) \ | |
49 template(Deoptimize) \ | |
50 template(DeoptimizeFrame) \ | |
51 template(DeoptimizeAll) \ | |
52 template(ZombieAll) \ | |
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53 template(UnlinkSymbols) \ |
1202 | 54 template(HandleFullCodeCache) \ |
0 | 55 template(Verify) \ |
56 template(PrintJNI) \ | |
57 template(HeapDumper) \ | |
58 template(DeoptimizeTheWorld) \ | |
59 template(GC_HeapInspection) \ | |
60 template(GenCollectFull) \ | |
61 template(GenCollectFullConcurrent) \ | |
62 template(GenCollectForAllocation) \ | |
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63 template(GenCollectForPermanentAllocation) \ |
0 | 64 template(ParallelGCFailedAllocation) \ |
65 template(ParallelGCFailedPermanentAllocation) \ | |
66 template(ParallelGCSystemGC) \ | |
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67 template(CGC_Operation) \ |
0 | 68 template(CMS_Initial_Mark) \ |
69 template(CMS_Final_Remark) \ | |
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70 template(G1CollectFull) \ |
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71 template(G1CollectForAllocation) \ |
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72 template(G1IncCollectionPause) \ |
0 | 73 template(EnableBiasedLocking) \ |
74 template(RevokeBias) \ | |
75 template(BulkRevokeBias) \ | |
76 template(PopulateDumpSharedSpace) \ | |
77 template(JNIFunctionTableCopier) \ | |
78 template(RedefineClasses) \ | |
79 template(GetOwnedMonitorInfo) \ | |
80 template(GetObjectMonitorUsage) \ | |
81 template(GetCurrentContendedMonitor) \ | |
82 template(GetStackTrace) \ | |
83 template(GetMultipleStackTraces) \ | |
84 template(GetAllStackTraces) \ | |
85 template(GetThreadListStackTraces) \ | |
86 template(GetFrameCount) \ | |
87 template(GetFrameLocation) \ | |
88 template(ChangeBreakpoints) \ | |
89 template(GetOrSetLocal) \ | |
90 template(GetCurrentLocation) \ | |
91 template(EnterInterpOnlyMode) \ | |
92 template(ChangeSingleStep) \ | |
93 template(HeapWalkOperation) \ | |
94 template(HeapIterateOperation) \ | |
95 template(ReportJavaOutOfMemory) \ | |
96 template(Exit) \ | |
97 | |
98 class VM_Operation: public CHeapObj { | |
99 public: | |
100 enum Mode { | |
101 _safepoint, // blocking, safepoint, vm_op C-heap allocated | |
102 _no_safepoint, // blocking, no safepoint, vm_op C-Heap allocated | |
103 _concurrent, // non-blocking, no safepoint, vm_op C-Heap allocated | |
104 _async_safepoint // non-blocking, safepoint, vm_op C-Heap allocated | |
105 }; | |
106 | |
107 enum VMOp_Type { | |
108 VM_OPS_DO(VM_OP_ENUM) | |
109 VMOp_Terminating | |
110 }; | |
111 | |
112 private: | |
113 Thread* _calling_thread; | |
114 ThreadPriority _priority; | |
115 long _timestamp; | |
116 VM_Operation* _next; | |
117 VM_Operation* _prev; | |
118 | |
119 // The VM operation name array | |
120 static const char* _names[]; | |
121 | |
122 public: | |
123 VM_Operation() { _calling_thread = NULL; _next = NULL; _prev = NULL; } | |
124 virtual ~VM_Operation() {} | |
125 | |
126 // VM operation support (used by VM thread) | |
127 Thread* calling_thread() const { return _calling_thread; } | |
128 ThreadPriority priority() { return _priority; } | |
129 void set_calling_thread(Thread* thread, ThreadPriority priority); | |
130 | |
131 long timestamp() const { return _timestamp; } | |
132 void set_timestamp(long timestamp) { _timestamp = timestamp; } | |
133 | |
134 // Called by VM thread - does in turn invoke doit(). Do not override this | |
135 void evaluate(); | |
136 | |
137 // evaluate() is called by the VMThread and in turn calls doit(). | |
138 // If the thread invoking VMThread::execute((VM_Operation*) is a JavaThread, | |
139 // doit_prologue() is called in that thread before transferring control to | |
140 // the VMThread. | |
141 // If doit_prologue() returns true the VM operation will proceed, and | |
142 // doit_epilogue() will be called by the JavaThread once the VM operation | |
143 // completes. If doit_prologue() returns false the VM operation is cancelled. | |
144 virtual void doit() = 0; | |
145 virtual bool doit_prologue() { return true; }; | |
146 virtual void doit_epilogue() {}; // Note: Not called if mode is: _concurrent | |
147 | |
148 // Type test | |
149 virtual bool is_methodCompiler() const { return false; } | |
150 | |
151 // Linking | |
152 VM_Operation *next() const { return _next; } | |
153 VM_Operation *prev() const { return _prev; } | |
154 void set_next(VM_Operation *next) { _next = next; } | |
155 void set_prev(VM_Operation *prev) { _prev = prev; } | |
156 | |
157 // Configuration. Override these appropriatly in subclasses. | |
158 virtual VMOp_Type type() const = 0; | |
159 virtual Mode evaluation_mode() const { return _safepoint; } | |
160 virtual bool allow_nested_vm_operations() const { return false; } | |
161 virtual bool is_cheap_allocated() const { return false; } | |
162 virtual void oops_do(OopClosure* f) { /* do nothing */ }; | |
163 | |
164 // CAUTION: <don't hang yourself with following rope> | |
165 // If you override these methods, make sure that the evaluation | |
166 // of these methods is race-free and non-blocking, since these | |
167 // methods may be evaluated either by the mutators or by the | |
168 // vm thread, either concurrently with mutators or with the mutators | |
169 // stopped. In other words, taking locks is verboten, and if there | |
170 // are any races in evaluating the conditions, they'd better be benign. | |
171 virtual bool evaluate_at_safepoint() const { | |
172 return evaluation_mode() == _safepoint || | |
173 evaluation_mode() == _async_safepoint; | |
174 } | |
175 virtual bool evaluate_concurrently() const { | |
176 return evaluation_mode() == _concurrent || | |
177 evaluation_mode() == _async_safepoint; | |
178 } | |
179 | |
180 // Debugging | |
181 void print_on_error(outputStream* st) const; | |
182 const char* name() const { return _names[type()]; } | |
183 static const char* name(int type) { | |
184 assert(type >= 0 && type < VMOp_Terminating, "invalid VM operation type"); | |
185 return _names[type]; | |
186 } | |
187 #ifndef PRODUCT | |
188 void print_on(outputStream* st) const { print_on_error(st); } | |
189 #endif | |
190 }; | |
191 | |
192 class VM_ThreadStop: public VM_Operation { | |
193 private: | |
194 oop _thread; // The Thread that the Throwable is thrown against | |
195 oop _throwable; // The Throwable thrown at the target Thread | |
196 public: | |
197 // All oops are passed as JNI handles, since there is no guarantee that a GC might happen before the | |
198 // VM operation is executed. | |
199 VM_ThreadStop(oop thread, oop throwable) { | |
200 _thread = thread; | |
201 _throwable = throwable; | |
202 } | |
203 VMOp_Type type() const { return VMOp_ThreadStop; } | |
204 oop target_thread() const { return _thread; } | |
205 oop throwable() const { return _throwable;} | |
206 void doit(); | |
207 // We deoptimize if top-most frame is compiled - this might require a C2I adapter to be generated | |
208 bool allow_nested_vm_operations() const { return true; } | |
209 Mode evaluation_mode() const { return _async_safepoint; } | |
210 bool is_cheap_allocated() const { return true; } | |
211 | |
212 // GC support | |
213 void oops_do(OopClosure* f) { | |
214 f->do_oop(&_thread); f->do_oop(&_throwable); | |
215 } | |
216 }; | |
217 | |
218 // dummy vm op, evaluated just to force a safepoint | |
219 class VM_ForceSafepoint: public VM_Operation { | |
220 public: | |
221 VM_ForceSafepoint() {} | |
222 void doit() {} | |
223 VMOp_Type type() const { return VMOp_ForceSafepoint; } | |
224 }; | |
225 | |
226 // dummy vm op, evaluated just to force a safepoint | |
227 class VM_ForceAsyncSafepoint: public VM_Operation { | |
228 public: | |
229 VM_ForceAsyncSafepoint() {} | |
230 void doit() {} | |
231 VMOp_Type type() const { return VMOp_ForceAsyncSafepoint; } | |
232 Mode evaluation_mode() const { return _async_safepoint; } | |
233 bool is_cheap_allocated() const { return true; } | |
234 }; | |
235 | |
236 class VM_Deoptimize: public VM_Operation { | |
237 public: | |
238 VM_Deoptimize() {} | |
239 VMOp_Type type() const { return VMOp_Deoptimize; } | |
240 void doit(); | |
241 bool allow_nested_vm_operations() const { return true; } | |
242 }; | |
243 | |
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244 |
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245 // Deopt helper that can deoptimize frames in threads other than the |
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246 // current thread. Only used through Deoptimization::deoptimize_frame. |
0 | 247 class VM_DeoptimizeFrame: public VM_Operation { |
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248 friend class Deoptimization; |
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249 |
0 | 250 private: |
251 JavaThread* _thread; | |
252 intptr_t* _id; | |
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253 VM_DeoptimizeFrame(JavaThread* thread, intptr_t* id); |
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254 |
0 | 255 public: |
256 VMOp_Type type() const { return VMOp_DeoptimizeFrame; } | |
257 void doit(); | |
258 bool allow_nested_vm_operations() const { return true; } | |
259 }; | |
260 | |
1202 | 261 class VM_HandleFullCodeCache: public VM_Operation { |
262 private: | |
263 bool _is_full; | |
264 public: | |
265 VM_HandleFullCodeCache(bool is_full) { _is_full = is_full; } | |
266 VMOp_Type type() const { return VMOp_HandleFullCodeCache; } | |
267 void doit(); | |
268 bool allow_nested_vm_operations() const { return true; } | |
269 }; | |
270 | |
0 | 271 #ifndef PRODUCT |
272 class VM_DeoptimizeAll: public VM_Operation { | |
273 private: | |
274 KlassHandle _dependee; | |
275 public: | |
276 VM_DeoptimizeAll() {} | |
277 VMOp_Type type() const { return VMOp_DeoptimizeAll; } | |
278 void doit(); | |
279 bool allow_nested_vm_operations() const { return true; } | |
280 }; | |
281 | |
282 | |
283 class VM_ZombieAll: public VM_Operation { | |
284 public: | |
285 VM_ZombieAll() {} | |
286 VMOp_Type type() const { return VMOp_ZombieAll; } | |
287 void doit(); | |
288 bool allow_nested_vm_operations() const { return true; } | |
289 }; | |
290 #endif // PRODUCT | |
291 | |
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292 class VM_UnlinkSymbols: public VM_Operation { |
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293 public: |
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294 VM_UnlinkSymbols() {} |
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295 VMOp_Type type() const { return VMOp_UnlinkSymbols; } |
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296 void doit(); |
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297 bool allow_nested_vm_operations() const { return true; } |
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298 }; |
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299 |
0 | 300 class VM_Verify: public VM_Operation { |
301 private: | |
302 KlassHandle _dependee; | |
303 public: | |
304 VM_Verify() {} | |
305 VMOp_Type type() const { return VMOp_Verify; } | |
306 void doit(); | |
307 }; | |
308 | |
309 | |
310 class VM_PrintThreads: public VM_Operation { | |
311 private: | |
312 outputStream* _out; | |
313 bool _print_concurrent_locks; | |
314 public: | |
315 VM_PrintThreads() { _out = tty; _print_concurrent_locks = PrintConcurrentLocks; } | |
316 VM_PrintThreads(outputStream* out, bool print_concurrent_locks) { _out = out; _print_concurrent_locks = print_concurrent_locks; } | |
317 VMOp_Type type() const { return VMOp_PrintThreads; } | |
318 void doit(); | |
319 bool doit_prologue(); | |
320 void doit_epilogue(); | |
321 }; | |
322 | |
323 class VM_PrintJNI: public VM_Operation { | |
324 private: | |
325 outputStream* _out; | |
326 public: | |
327 VM_PrintJNI() { _out = tty; } | |
328 VM_PrintJNI(outputStream* out) { _out = out; } | |
329 VMOp_Type type() const { return VMOp_PrintJNI; } | |
330 void doit(); | |
331 }; | |
332 | |
333 class DeadlockCycle; | |
334 class VM_FindDeadlocks: public VM_Operation { | |
335 private: | |
336 bool _concurrent_locks; | |
337 DeadlockCycle* _deadlocks; | |
338 outputStream* _out; | |
339 | |
340 public: | |
341 VM_FindDeadlocks(bool concurrent_locks) : _concurrent_locks(concurrent_locks), _out(NULL), _deadlocks(NULL) {}; | |
342 VM_FindDeadlocks(outputStream* st) : _concurrent_locks(true), _out(st), _deadlocks(NULL) {}; | |
343 ~VM_FindDeadlocks(); | |
344 | |
345 DeadlockCycle* result() { return _deadlocks; }; | |
346 VMOp_Type type() const { return VMOp_FindDeadlocks; } | |
347 void doit(); | |
348 bool doit_prologue(); | |
349 }; | |
350 | |
351 class ThreadDumpResult; | |
352 class ThreadSnapshot; | |
353 class ThreadConcurrentLocks; | |
354 | |
355 class VM_ThreadDump : public VM_Operation { | |
356 private: | |
357 ThreadDumpResult* _result; | |
358 int _num_threads; | |
359 GrowableArray<instanceHandle>* _threads; | |
360 int _max_depth; | |
361 bool _with_locked_monitors; | |
362 bool _with_locked_synchronizers; | |
363 | |
364 ThreadSnapshot* snapshot_thread(JavaThread* java_thread, ThreadConcurrentLocks* tcl); | |
365 | |
366 public: | |
367 VM_ThreadDump(ThreadDumpResult* result, | |
368 int max_depth, // -1 indicates entire stack | |
369 bool with_locked_monitors, | |
370 bool with_locked_synchronizers); | |
371 | |
372 VM_ThreadDump(ThreadDumpResult* result, | |
373 GrowableArray<instanceHandle>* threads, | |
374 int num_threads, // -1 indicates entire stack | |
375 int max_depth, | |
376 bool with_locked_monitors, | |
377 bool with_locked_synchronizers); | |
378 | |
379 VMOp_Type type() const { return VMOp_ThreadDump; } | |
380 void doit(); | |
381 bool doit_prologue(); | |
382 void doit_epilogue(); | |
383 }; | |
384 | |
385 | |
386 class VM_Exit: public VM_Operation { | |
387 private: | |
388 int _exit_code; | |
389 static volatile bool _vm_exited; | |
390 static Thread * _shutdown_thread; | |
391 static void wait_if_vm_exited(); | |
392 public: | |
393 VM_Exit(int exit_code) { | |
394 _exit_code = exit_code; | |
395 } | |
396 static int wait_for_threads_in_native_to_block(); | |
397 static int set_vm_exited(); | |
398 static bool vm_exited() { return _vm_exited; } | |
399 static void block_if_vm_exited() { | |
400 if (_vm_exited) { | |
401 wait_if_vm_exited(); | |
402 } | |
403 } | |
404 VMOp_Type type() const { return VMOp_Exit; } | |
405 void doit(); | |
406 }; | |
1972 | 407 |
408 #endif // SHARE_VM_RUNTIME_VM_OPERATIONS_HPP |