Mercurial > hg > graal-jvmci-8
annotate src/share/vm/runtime/vm_operations.hpp @ 2142:8012aa3ccede
4926272: methodOopDesc::method_from_bcp is unsafe
Reviewed-by: coleenp, jrose, kvn, dcubed
author | never |
---|---|
date | Thu, 13 Jan 2011 22:15:41 -0800 |
parents | f95d63e2154a |
children | 3582bf76420e |
rev | line source |
---|---|
0 | 1 /* |
1972 | 2 * Copyright (c) 1997, 2010, 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 * | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1202
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1202
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1202
diff
changeset
|
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) \ | |
1202 | 53 template(HandleFullCodeCache) \ |
0 | 54 template(Verify) \ |
55 template(PrintJNI) \ | |
56 template(HeapDumper) \ | |
57 template(DeoptimizeTheWorld) \ | |
58 template(GC_HeapInspection) \ | |
59 template(GenCollectFull) \ | |
60 template(GenCollectFullConcurrent) \ | |
61 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
|
62 template(GenCollectForPermanentAllocation) \ |
0 | 63 template(ParallelGCFailedAllocation) \ |
64 template(ParallelGCFailedPermanentAllocation) \ | |
65 template(ParallelGCSystemGC) \ | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
139
diff
changeset
|
66 template(CGC_Operation) \ |
0 | 67 template(CMS_Initial_Mark) \ |
68 template(CMS_Final_Remark) \ | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
139
diff
changeset
|
69 template(G1CollectFull) \ |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
139
diff
changeset
|
70 template(G1CollectForAllocation) \ |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
139
diff
changeset
|
71 template(G1IncCollectionPause) \ |
0 | 72 template(EnableBiasedLocking) \ |
73 template(RevokeBias) \ | |
74 template(BulkRevokeBias) \ | |
75 template(PopulateDumpSharedSpace) \ | |
76 template(JNIFunctionTableCopier) \ | |
77 template(RedefineClasses) \ | |
78 template(GetOwnedMonitorInfo) \ | |
79 template(GetObjectMonitorUsage) \ | |
80 template(GetCurrentContendedMonitor) \ | |
81 template(GetStackTrace) \ | |
82 template(GetMultipleStackTraces) \ | |
83 template(GetAllStackTraces) \ | |
84 template(GetThreadListStackTraces) \ | |
85 template(GetFrameCount) \ | |
86 template(GetFrameLocation) \ | |
87 template(ChangeBreakpoints) \ | |
88 template(GetOrSetLocal) \ | |
89 template(GetCurrentLocation) \ | |
90 template(EnterInterpOnlyMode) \ | |
91 template(ChangeSingleStep) \ | |
92 template(HeapWalkOperation) \ | |
93 template(HeapIterateOperation) \ | |
94 template(ReportJavaOutOfMemory) \ | |
95 template(Exit) \ | |
96 | |
97 class VM_Operation: public CHeapObj { | |
98 public: | |
99 enum Mode { | |
100 _safepoint, // blocking, safepoint, vm_op C-heap allocated | |
101 _no_safepoint, // blocking, no safepoint, vm_op C-Heap allocated | |
102 _concurrent, // non-blocking, no safepoint, vm_op C-Heap allocated | |
103 _async_safepoint // non-blocking, safepoint, vm_op C-Heap allocated | |
104 }; | |
105 | |
106 enum VMOp_Type { | |
107 VM_OPS_DO(VM_OP_ENUM) | |
108 VMOp_Terminating | |
109 }; | |
110 | |
111 private: | |
112 Thread* _calling_thread; | |
113 ThreadPriority _priority; | |
114 long _timestamp; | |
115 VM_Operation* _next; | |
116 VM_Operation* _prev; | |
117 | |
118 // The VM operation name array | |
119 static const char* _names[]; | |
120 | |
121 public: | |
122 VM_Operation() { _calling_thread = NULL; _next = NULL; _prev = NULL; } | |
123 virtual ~VM_Operation() {} | |
124 | |
125 // VM operation support (used by VM thread) | |
126 Thread* calling_thread() const { return _calling_thread; } | |
127 ThreadPriority priority() { return _priority; } | |
128 void set_calling_thread(Thread* thread, ThreadPriority priority); | |
129 | |
130 long timestamp() const { return _timestamp; } | |
131 void set_timestamp(long timestamp) { _timestamp = timestamp; } | |
132 | |
133 // Called by VM thread - does in turn invoke doit(). Do not override this | |
134 void evaluate(); | |
135 | |
136 // evaluate() is called by the VMThread and in turn calls doit(). | |
137 // If the thread invoking VMThread::execute((VM_Operation*) is a JavaThread, | |
138 // doit_prologue() is called in that thread before transferring control to | |
139 // the VMThread. | |
140 // If doit_prologue() returns true the VM operation will proceed, and | |
141 // doit_epilogue() will be called by the JavaThread once the VM operation | |
142 // completes. If doit_prologue() returns false the VM operation is cancelled. | |
143 virtual void doit() = 0; | |
144 virtual bool doit_prologue() { return true; }; | |
145 virtual void doit_epilogue() {}; // Note: Not called if mode is: _concurrent | |
146 | |
147 // Type test | |
148 virtual bool is_methodCompiler() const { return false; } | |
149 | |
150 // Linking | |
151 VM_Operation *next() const { return _next; } | |
152 VM_Operation *prev() const { return _prev; } | |
153 void set_next(VM_Operation *next) { _next = next; } | |
154 void set_prev(VM_Operation *prev) { _prev = prev; } | |
155 | |
156 // Configuration. Override these appropriatly in subclasses. | |
157 virtual VMOp_Type type() const = 0; | |
158 virtual Mode evaluation_mode() const { return _safepoint; } | |
159 virtual bool allow_nested_vm_operations() const { return false; } | |
160 virtual bool is_cheap_allocated() const { return false; } | |
161 virtual void oops_do(OopClosure* f) { /* do nothing */ }; | |
162 | |
163 // CAUTION: <don't hang yourself with following rope> | |
164 // If you override these methods, make sure that the evaluation | |
165 // of these methods is race-free and non-blocking, since these | |
166 // methods may be evaluated either by the mutators or by the | |
167 // vm thread, either concurrently with mutators or with the mutators | |
168 // stopped. In other words, taking locks is verboten, and if there | |
169 // are any races in evaluating the conditions, they'd better be benign. | |
170 virtual bool evaluate_at_safepoint() const { | |
171 return evaluation_mode() == _safepoint || | |
172 evaluation_mode() == _async_safepoint; | |
173 } | |
174 virtual bool evaluate_concurrently() const { | |
175 return evaluation_mode() == _concurrent || | |
176 evaluation_mode() == _async_safepoint; | |
177 } | |
178 | |
179 // Debugging | |
180 void print_on_error(outputStream* st) const; | |
181 const char* name() const { return _names[type()]; } | |
182 static const char* name(int type) { | |
183 assert(type >= 0 && type < VMOp_Terminating, "invalid VM operation type"); | |
184 return _names[type]; | |
185 } | |
186 #ifndef PRODUCT | |
187 void print_on(outputStream* st) const { print_on_error(st); } | |
188 #endif | |
189 }; | |
190 | |
191 class VM_ThreadStop: public VM_Operation { | |
192 private: | |
193 oop _thread; // The Thread that the Throwable is thrown against | |
194 oop _throwable; // The Throwable thrown at the target Thread | |
195 public: | |
196 // All oops are passed as JNI handles, since there is no guarantee that a GC might happen before the | |
197 // VM operation is executed. | |
198 VM_ThreadStop(oop thread, oop throwable) { | |
199 _thread = thread; | |
200 _throwable = throwable; | |
201 } | |
202 VMOp_Type type() const { return VMOp_ThreadStop; } | |
203 oop target_thread() const { return _thread; } | |
204 oop throwable() const { return _throwable;} | |
205 void doit(); | |
206 // We deoptimize if top-most frame is compiled - this might require a C2I adapter to be generated | |
207 bool allow_nested_vm_operations() const { return true; } | |
208 Mode evaluation_mode() const { return _async_safepoint; } | |
209 bool is_cheap_allocated() const { return true; } | |
210 | |
211 // GC support | |
212 void oops_do(OopClosure* f) { | |
213 f->do_oop(&_thread); f->do_oop(&_throwable); | |
214 } | |
215 }; | |
216 | |
217 // dummy vm op, evaluated just to force a safepoint | |
218 class VM_ForceSafepoint: public VM_Operation { | |
219 public: | |
220 VM_ForceSafepoint() {} | |
221 void doit() {} | |
222 VMOp_Type type() const { return VMOp_ForceSafepoint; } | |
223 }; | |
224 | |
225 // dummy vm op, evaluated just to force a safepoint | |
226 class VM_ForceAsyncSafepoint: public VM_Operation { | |
227 public: | |
228 VM_ForceAsyncSafepoint() {} | |
229 void doit() {} | |
230 VMOp_Type type() const { return VMOp_ForceAsyncSafepoint; } | |
231 Mode evaluation_mode() const { return _async_safepoint; } | |
232 bool is_cheap_allocated() const { return true; } | |
233 }; | |
234 | |
235 class VM_Deoptimize: public VM_Operation { | |
236 public: | |
237 VM_Deoptimize() {} | |
238 VMOp_Type type() const { return VMOp_Deoptimize; } | |
239 void doit(); | |
240 bool allow_nested_vm_operations() const { return true; } | |
241 }; | |
242 | |
1905
ce6848d0666d
6968367: can_post_on_exceptions is still using VM_DeoptimizeFrame in some places
never
parents:
1552
diff
changeset
|
243 |
ce6848d0666d
6968367: can_post_on_exceptions is still using VM_DeoptimizeFrame in some places
never
parents:
1552
diff
changeset
|
244 // Deopt helper that can deoptimize frames in threads other than the |
ce6848d0666d
6968367: can_post_on_exceptions is still using VM_DeoptimizeFrame in some places
never
parents:
1552
diff
changeset
|
245 // current thread. Only used through Deoptimization::deoptimize_frame. |
0 | 246 class VM_DeoptimizeFrame: public VM_Operation { |
1905
ce6848d0666d
6968367: can_post_on_exceptions is still using VM_DeoptimizeFrame in some places
never
parents:
1552
diff
changeset
|
247 friend class Deoptimization; |
ce6848d0666d
6968367: can_post_on_exceptions is still using VM_DeoptimizeFrame in some places
never
parents:
1552
diff
changeset
|
248 |
0 | 249 private: |
250 JavaThread* _thread; | |
251 intptr_t* _id; | |
1905
ce6848d0666d
6968367: can_post_on_exceptions is still using VM_DeoptimizeFrame in some places
never
parents:
1552
diff
changeset
|
252 VM_DeoptimizeFrame(JavaThread* thread, intptr_t* id); |
ce6848d0666d
6968367: can_post_on_exceptions is still using VM_DeoptimizeFrame in some places
never
parents:
1552
diff
changeset
|
253 |
0 | 254 public: |
255 VMOp_Type type() const { return VMOp_DeoptimizeFrame; } | |
256 void doit(); | |
257 bool allow_nested_vm_operations() const { return true; } | |
258 }; | |
259 | |
1202 | 260 class VM_HandleFullCodeCache: public VM_Operation { |
261 private: | |
262 bool _is_full; | |
263 public: | |
264 VM_HandleFullCodeCache(bool is_full) { _is_full = is_full; } | |
265 VMOp_Type type() const { return VMOp_HandleFullCodeCache; } | |
266 void doit(); | |
267 bool allow_nested_vm_operations() const { return true; } | |
268 }; | |
269 | |
0 | 270 #ifndef PRODUCT |
271 class VM_DeoptimizeAll: public VM_Operation { | |
272 private: | |
273 KlassHandle _dependee; | |
274 public: | |
275 VM_DeoptimizeAll() {} | |
276 VMOp_Type type() const { return VMOp_DeoptimizeAll; } | |
277 void doit(); | |
278 bool allow_nested_vm_operations() const { return true; } | |
279 }; | |
280 | |
281 | |
282 class VM_ZombieAll: public VM_Operation { | |
283 public: | |
284 VM_ZombieAll() {} | |
285 VMOp_Type type() const { return VMOp_ZombieAll; } | |
286 void doit(); | |
287 bool allow_nested_vm_operations() const { return true; } | |
288 }; | |
289 #endif // PRODUCT | |
290 | |
291 class VM_Verify: public VM_Operation { | |
292 private: | |
293 KlassHandle _dependee; | |
294 public: | |
295 VM_Verify() {} | |
296 VMOp_Type type() const { return VMOp_Verify; } | |
297 void doit(); | |
298 }; | |
299 | |
300 | |
301 class VM_PrintThreads: public VM_Operation { | |
302 private: | |
303 outputStream* _out; | |
304 bool _print_concurrent_locks; | |
305 public: | |
306 VM_PrintThreads() { _out = tty; _print_concurrent_locks = PrintConcurrentLocks; } | |
307 VM_PrintThreads(outputStream* out, bool print_concurrent_locks) { _out = out; _print_concurrent_locks = print_concurrent_locks; } | |
308 VMOp_Type type() const { return VMOp_PrintThreads; } | |
309 void doit(); | |
310 bool doit_prologue(); | |
311 void doit_epilogue(); | |
312 }; | |
313 | |
314 class VM_PrintJNI: public VM_Operation { | |
315 private: | |
316 outputStream* _out; | |
317 public: | |
318 VM_PrintJNI() { _out = tty; } | |
319 VM_PrintJNI(outputStream* out) { _out = out; } | |
320 VMOp_Type type() const { return VMOp_PrintJNI; } | |
321 void doit(); | |
322 }; | |
323 | |
324 class DeadlockCycle; | |
325 class VM_FindDeadlocks: public VM_Operation { | |
326 private: | |
327 bool _concurrent_locks; | |
328 DeadlockCycle* _deadlocks; | |
329 outputStream* _out; | |
330 | |
331 public: | |
332 VM_FindDeadlocks(bool concurrent_locks) : _concurrent_locks(concurrent_locks), _out(NULL), _deadlocks(NULL) {}; | |
333 VM_FindDeadlocks(outputStream* st) : _concurrent_locks(true), _out(st), _deadlocks(NULL) {}; | |
334 ~VM_FindDeadlocks(); | |
335 | |
336 DeadlockCycle* result() { return _deadlocks; }; | |
337 VMOp_Type type() const { return VMOp_FindDeadlocks; } | |
338 void doit(); | |
339 bool doit_prologue(); | |
340 }; | |
341 | |
342 class ThreadDumpResult; | |
343 class ThreadSnapshot; | |
344 class ThreadConcurrentLocks; | |
345 | |
346 class VM_ThreadDump : public VM_Operation { | |
347 private: | |
348 ThreadDumpResult* _result; | |
349 int _num_threads; | |
350 GrowableArray<instanceHandle>* _threads; | |
351 int _max_depth; | |
352 bool _with_locked_monitors; | |
353 bool _with_locked_synchronizers; | |
354 | |
355 ThreadSnapshot* snapshot_thread(JavaThread* java_thread, ThreadConcurrentLocks* tcl); | |
356 | |
357 public: | |
358 VM_ThreadDump(ThreadDumpResult* result, | |
359 int max_depth, // -1 indicates entire stack | |
360 bool with_locked_monitors, | |
361 bool with_locked_synchronizers); | |
362 | |
363 VM_ThreadDump(ThreadDumpResult* result, | |
364 GrowableArray<instanceHandle>* threads, | |
365 int num_threads, // -1 indicates entire stack | |
366 int max_depth, | |
367 bool with_locked_monitors, | |
368 bool with_locked_synchronizers); | |
369 | |
370 VMOp_Type type() const { return VMOp_ThreadDump; } | |
371 void doit(); | |
372 bool doit_prologue(); | |
373 void doit_epilogue(); | |
374 }; | |
375 | |
376 | |
377 class VM_Exit: public VM_Operation { | |
378 private: | |
379 int _exit_code; | |
380 static volatile bool _vm_exited; | |
381 static Thread * _shutdown_thread; | |
382 static void wait_if_vm_exited(); | |
383 public: | |
384 VM_Exit(int exit_code) { | |
385 _exit_code = exit_code; | |
386 } | |
387 static int wait_for_threads_in_native_to_block(); | |
388 static int set_vm_exited(); | |
389 static bool vm_exited() { return _vm_exited; } | |
390 static void block_if_vm_exited() { | |
391 if (_vm_exited) { | |
392 wait_if_vm_exited(); | |
393 } | |
394 } | |
395 VMOp_Type type() const { return VMOp_Exit; } | |
396 void doit(); | |
397 }; | |
1972 | 398 |
399 #endif // SHARE_VM_RUNTIME_VM_OPERATIONS_HPP |