Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/vm_operations.hpp @ 177:2a8ec427fbe1
6706604: Copyright headers need to be changed to GPL.
Summary: Update the copyrights
Reviewed-by: ohair
author | kamg |
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date | Thu, 29 May 2008 14:06:30 -0400 |
parents | c0492d52d55b |
children | d1605aabd0a1 37f87013dfd8 |
rev | line source |
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0 | 1 /* |
2 * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved. | |
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 // The following classes are used for operations | |
26 // initiated by a Java thread but that must | |
27 // take place in the VMThread. | |
28 | |
29 #define VM_OP_ENUM(type) VMOp_##type, | |
30 | |
31 // Note: When new VM_XXX comes up, add 'XXX' to the template table. | |
32 #define VM_OPS_DO(template) \ | |
33 template(Dummy) \ | |
34 template(ThreadStop) \ | |
35 template(ThreadDump) \ | |
36 template(PrintThreads) \ | |
37 template(FindDeadlocks) \ | |
38 template(ForceSafepoint) \ | |
39 template(ForceAsyncSafepoint) \ | |
40 template(Deoptimize) \ | |
41 template(DeoptimizeFrame) \ | |
42 template(DeoptimizeAll) \ | |
43 template(ZombieAll) \ | |
44 template(Verify) \ | |
45 template(PrintJNI) \ | |
46 template(HeapDumper) \ | |
47 template(DeoptimizeTheWorld) \ | |
48 template(GC_HeapInspection) \ | |
49 template(GenCollectFull) \ | |
50 template(GenCollectFullConcurrent) \ | |
51 template(GenCollectForAllocation) \ | |
139
c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents:
0
diff
changeset
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52 template(GenCollectForPermanentAllocation) \ |
0 | 53 template(ParallelGCFailedAllocation) \ |
54 template(ParallelGCFailedPermanentAllocation) \ | |
55 template(ParallelGCSystemGC) \ | |
56 template(CMS_Initial_Mark) \ | |
57 template(CMS_Final_Remark) \ | |
58 template(EnableBiasedLocking) \ | |
59 template(RevokeBias) \ | |
60 template(BulkRevokeBias) \ | |
61 template(PopulateDumpSharedSpace) \ | |
62 template(JNIFunctionTableCopier) \ | |
63 template(RedefineClasses) \ | |
64 template(GetOwnedMonitorInfo) \ | |
65 template(GetObjectMonitorUsage) \ | |
66 template(GetCurrentContendedMonitor) \ | |
67 template(GetStackTrace) \ | |
68 template(GetMultipleStackTraces) \ | |
69 template(GetAllStackTraces) \ | |
70 template(GetThreadListStackTraces) \ | |
71 template(GetFrameCount) \ | |
72 template(GetFrameLocation) \ | |
73 template(ChangeBreakpoints) \ | |
74 template(GetOrSetLocal) \ | |
75 template(GetCurrentLocation) \ | |
76 template(EnterInterpOnlyMode) \ | |
77 template(ChangeSingleStep) \ | |
78 template(HeapWalkOperation) \ | |
79 template(HeapIterateOperation) \ | |
80 template(ReportJavaOutOfMemory) \ | |
81 template(Exit) \ | |
82 | |
83 class VM_Operation: public CHeapObj { | |
84 public: | |
85 enum Mode { | |
86 _safepoint, // blocking, safepoint, vm_op C-heap allocated | |
87 _no_safepoint, // blocking, no safepoint, vm_op C-Heap allocated | |
88 _concurrent, // non-blocking, no safepoint, vm_op C-Heap allocated | |
89 _async_safepoint // non-blocking, safepoint, vm_op C-Heap allocated | |
90 }; | |
91 | |
92 enum VMOp_Type { | |
93 VM_OPS_DO(VM_OP_ENUM) | |
94 VMOp_Terminating | |
95 }; | |
96 | |
97 private: | |
98 Thread* _calling_thread; | |
99 ThreadPriority _priority; | |
100 long _timestamp; | |
101 VM_Operation* _next; | |
102 VM_Operation* _prev; | |
103 | |
104 // The VM operation name array | |
105 static const char* _names[]; | |
106 | |
107 public: | |
108 VM_Operation() { _calling_thread = NULL; _next = NULL; _prev = NULL; } | |
109 virtual ~VM_Operation() {} | |
110 | |
111 // VM operation support (used by VM thread) | |
112 Thread* calling_thread() const { return _calling_thread; } | |
113 ThreadPriority priority() { return _priority; } | |
114 void set_calling_thread(Thread* thread, ThreadPriority priority); | |
115 | |
116 long timestamp() const { return _timestamp; } | |
117 void set_timestamp(long timestamp) { _timestamp = timestamp; } | |
118 | |
119 // Called by VM thread - does in turn invoke doit(). Do not override this | |
120 void evaluate(); | |
121 | |
122 // evaluate() is called by the VMThread and in turn calls doit(). | |
123 // If the thread invoking VMThread::execute((VM_Operation*) is a JavaThread, | |
124 // doit_prologue() is called in that thread before transferring control to | |
125 // the VMThread. | |
126 // If doit_prologue() returns true the VM operation will proceed, and | |
127 // doit_epilogue() will be called by the JavaThread once the VM operation | |
128 // completes. If doit_prologue() returns false the VM operation is cancelled. | |
129 virtual void doit() = 0; | |
130 virtual bool doit_prologue() { return true; }; | |
131 virtual void doit_epilogue() {}; // Note: Not called if mode is: _concurrent | |
132 | |
133 // Type test | |
134 virtual bool is_methodCompiler() const { return false; } | |
135 | |
136 // Linking | |
137 VM_Operation *next() const { return _next; } | |
138 VM_Operation *prev() const { return _prev; } | |
139 void set_next(VM_Operation *next) { _next = next; } | |
140 void set_prev(VM_Operation *prev) { _prev = prev; } | |
141 | |
142 // Configuration. Override these appropriatly in subclasses. | |
143 virtual VMOp_Type type() const = 0; | |
144 virtual Mode evaluation_mode() const { return _safepoint; } | |
145 virtual bool allow_nested_vm_operations() const { return false; } | |
146 virtual bool is_cheap_allocated() const { return false; } | |
147 virtual void oops_do(OopClosure* f) { /* do nothing */ }; | |
148 | |
149 // CAUTION: <don't hang yourself with following rope> | |
150 // If you override these methods, make sure that the evaluation | |
151 // of these methods is race-free and non-blocking, since these | |
152 // methods may be evaluated either by the mutators or by the | |
153 // vm thread, either concurrently with mutators or with the mutators | |
154 // stopped. In other words, taking locks is verboten, and if there | |
155 // are any races in evaluating the conditions, they'd better be benign. | |
156 virtual bool evaluate_at_safepoint() const { | |
157 return evaluation_mode() == _safepoint || | |
158 evaluation_mode() == _async_safepoint; | |
159 } | |
160 virtual bool evaluate_concurrently() const { | |
161 return evaluation_mode() == _concurrent || | |
162 evaluation_mode() == _async_safepoint; | |
163 } | |
164 | |
165 // Debugging | |
166 void print_on_error(outputStream* st) const; | |
167 const char* name() const { return _names[type()]; } | |
168 static const char* name(int type) { | |
169 assert(type >= 0 && type < VMOp_Terminating, "invalid VM operation type"); | |
170 return _names[type]; | |
171 } | |
172 #ifndef PRODUCT | |
173 void print_on(outputStream* st) const { print_on_error(st); } | |
174 #endif | |
175 }; | |
176 | |
177 class VM_ThreadStop: public VM_Operation { | |
178 private: | |
179 oop _thread; // The Thread that the Throwable is thrown against | |
180 oop _throwable; // The Throwable thrown at the target Thread | |
181 public: | |
182 // All oops are passed as JNI handles, since there is no guarantee that a GC might happen before the | |
183 // VM operation is executed. | |
184 VM_ThreadStop(oop thread, oop throwable) { | |
185 _thread = thread; | |
186 _throwable = throwable; | |
187 } | |
188 VMOp_Type type() const { return VMOp_ThreadStop; } | |
189 oop target_thread() const { return _thread; } | |
190 oop throwable() const { return _throwable;} | |
191 void doit(); | |
192 // We deoptimize if top-most frame is compiled - this might require a C2I adapter to be generated | |
193 bool allow_nested_vm_operations() const { return true; } | |
194 Mode evaluation_mode() const { return _async_safepoint; } | |
195 bool is_cheap_allocated() const { return true; } | |
196 | |
197 // GC support | |
198 void oops_do(OopClosure* f) { | |
199 f->do_oop(&_thread); f->do_oop(&_throwable); | |
200 } | |
201 }; | |
202 | |
203 // dummy vm op, evaluated just to force a safepoint | |
204 class VM_ForceSafepoint: public VM_Operation { | |
205 public: | |
206 VM_ForceSafepoint() {} | |
207 void doit() {} | |
208 VMOp_Type type() const { return VMOp_ForceSafepoint; } | |
209 }; | |
210 | |
211 // dummy vm op, evaluated just to force a safepoint | |
212 class VM_ForceAsyncSafepoint: public VM_Operation { | |
213 public: | |
214 VM_ForceAsyncSafepoint() {} | |
215 void doit() {} | |
216 VMOp_Type type() const { return VMOp_ForceAsyncSafepoint; } | |
217 Mode evaluation_mode() const { return _async_safepoint; } | |
218 bool is_cheap_allocated() const { return true; } | |
219 }; | |
220 | |
221 class VM_Deoptimize: public VM_Operation { | |
222 public: | |
223 VM_Deoptimize() {} | |
224 VMOp_Type type() const { return VMOp_Deoptimize; } | |
225 void doit(); | |
226 bool allow_nested_vm_operations() const { return true; } | |
227 }; | |
228 | |
229 class VM_DeoptimizeFrame: public VM_Operation { | |
230 private: | |
231 JavaThread* _thread; | |
232 intptr_t* _id; | |
233 public: | |
234 VM_DeoptimizeFrame(JavaThread* thread, intptr_t* id); | |
235 VMOp_Type type() const { return VMOp_DeoptimizeFrame; } | |
236 void doit(); | |
237 bool allow_nested_vm_operations() const { return true; } | |
238 }; | |
239 | |
240 #ifndef PRODUCT | |
241 class VM_DeoptimizeAll: public VM_Operation { | |
242 private: | |
243 KlassHandle _dependee; | |
244 public: | |
245 VM_DeoptimizeAll() {} | |
246 VMOp_Type type() const { return VMOp_DeoptimizeAll; } | |
247 void doit(); | |
248 bool allow_nested_vm_operations() const { return true; } | |
249 }; | |
250 | |
251 | |
252 class VM_ZombieAll: public VM_Operation { | |
253 public: | |
254 VM_ZombieAll() {} | |
255 VMOp_Type type() const { return VMOp_ZombieAll; } | |
256 void doit(); | |
257 bool allow_nested_vm_operations() const { return true; } | |
258 }; | |
259 #endif // PRODUCT | |
260 | |
261 class VM_Verify: public VM_Operation { | |
262 private: | |
263 KlassHandle _dependee; | |
264 public: | |
265 VM_Verify() {} | |
266 VMOp_Type type() const { return VMOp_Verify; } | |
267 void doit(); | |
268 }; | |
269 | |
270 | |
271 class VM_PrintThreads: public VM_Operation { | |
272 private: | |
273 outputStream* _out; | |
274 bool _print_concurrent_locks; | |
275 public: | |
276 VM_PrintThreads() { _out = tty; _print_concurrent_locks = PrintConcurrentLocks; } | |
277 VM_PrintThreads(outputStream* out, bool print_concurrent_locks) { _out = out; _print_concurrent_locks = print_concurrent_locks; } | |
278 VMOp_Type type() const { return VMOp_PrintThreads; } | |
279 void doit(); | |
280 bool doit_prologue(); | |
281 void doit_epilogue(); | |
282 }; | |
283 | |
284 class VM_PrintJNI: public VM_Operation { | |
285 private: | |
286 outputStream* _out; | |
287 public: | |
288 VM_PrintJNI() { _out = tty; } | |
289 VM_PrintJNI(outputStream* out) { _out = out; } | |
290 VMOp_Type type() const { return VMOp_PrintJNI; } | |
291 void doit(); | |
292 }; | |
293 | |
294 class DeadlockCycle; | |
295 class VM_FindDeadlocks: public VM_Operation { | |
296 private: | |
297 bool _concurrent_locks; | |
298 DeadlockCycle* _deadlocks; | |
299 outputStream* _out; | |
300 | |
301 public: | |
302 VM_FindDeadlocks(bool concurrent_locks) : _concurrent_locks(concurrent_locks), _out(NULL), _deadlocks(NULL) {}; | |
303 VM_FindDeadlocks(outputStream* st) : _concurrent_locks(true), _out(st), _deadlocks(NULL) {}; | |
304 ~VM_FindDeadlocks(); | |
305 | |
306 DeadlockCycle* result() { return _deadlocks; }; | |
307 VMOp_Type type() const { return VMOp_FindDeadlocks; } | |
308 void doit(); | |
309 bool doit_prologue(); | |
310 }; | |
311 | |
312 class ThreadDumpResult; | |
313 class ThreadSnapshot; | |
314 class ThreadConcurrentLocks; | |
315 | |
316 class VM_ThreadDump : public VM_Operation { | |
317 private: | |
318 ThreadDumpResult* _result; | |
319 int _num_threads; | |
320 GrowableArray<instanceHandle>* _threads; | |
321 int _max_depth; | |
322 bool _with_locked_monitors; | |
323 bool _with_locked_synchronizers; | |
324 | |
325 ThreadSnapshot* snapshot_thread(JavaThread* java_thread, ThreadConcurrentLocks* tcl); | |
326 | |
327 public: | |
328 VM_ThreadDump(ThreadDumpResult* result, | |
329 int max_depth, // -1 indicates entire stack | |
330 bool with_locked_monitors, | |
331 bool with_locked_synchronizers); | |
332 | |
333 VM_ThreadDump(ThreadDumpResult* result, | |
334 GrowableArray<instanceHandle>* threads, | |
335 int num_threads, // -1 indicates entire stack | |
336 int max_depth, | |
337 bool with_locked_monitors, | |
338 bool with_locked_synchronizers); | |
339 | |
340 VMOp_Type type() const { return VMOp_ThreadDump; } | |
341 void doit(); | |
342 bool doit_prologue(); | |
343 void doit_epilogue(); | |
344 }; | |
345 | |
346 | |
347 class VM_Exit: public VM_Operation { | |
348 private: | |
349 int _exit_code; | |
350 static volatile bool _vm_exited; | |
351 static Thread * _shutdown_thread; | |
352 static void wait_if_vm_exited(); | |
353 public: | |
354 VM_Exit(int exit_code) { | |
355 _exit_code = exit_code; | |
356 } | |
357 static int wait_for_threads_in_native_to_block(); | |
358 static int set_vm_exited(); | |
359 static bool vm_exited() { return _vm_exited; } | |
360 static void block_if_vm_exited() { | |
361 if (_vm_exited) { | |
362 wait_if_vm_exited(); | |
363 } | |
364 } | |
365 VMOp_Type type() const { return VMOp_Exit; } | |
366 void doit(); | |
367 }; |