Mercurial > hg > truffle
annotate src/share/vm/runtime/vm_operations.hpp @ 20327:411e30e5fbb8
8026796: Make replace_in_map() on parent maps generic
Summary: propagate node replacements along control flow edges to callers
Reviewed-by: kvn, vlivanov
author | roland |
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date | Wed, 13 Aug 2014 11:00:22 +0200 |
parents | b127b0d6de7f |
children | 52b4284cb496 227a9e5e4b4a |
rev | line source |
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0 | 1 /* |
10405 | 2 * Copyright (c) 1997, 2013, 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) \ |
0 | 54 template(Verify) \ |
55 template(PrintJNI) \ | |
56 template(HeapDumper) \ | |
57 template(DeoptimizeTheWorld) \ | |
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58 template(CollectForMetadataAllocation) \ |
0 | 59 template(GC_HeapInspection) \ |
60 template(GenCollectFull) \ | |
61 template(GenCollectFullConcurrent) \ | |
62 template(GenCollectForAllocation) \ | |
63 template(ParallelGCFailedAllocation) \ | |
64 template(ParallelGCSystemGC) \ | |
342
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65 template(CGC_Operation) \ |
0 | 66 template(CMS_Initial_Mark) \ |
67 template(CMS_Final_Remark) \ | |
342
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68 template(G1CollectFull) \ |
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69 template(G1CollectForAllocation) \ |
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70 template(G1IncCollectionPause) \ |
0 | 71 template(EnableBiasedLocking) \ |
72 template(RevokeBias) \ | |
73 template(BulkRevokeBias) \ | |
74 template(PopulateDumpSharedSpace) \ | |
75 template(JNIFunctionTableCopier) \ | |
76 template(RedefineClasses) \ | |
77 template(GetOwnedMonitorInfo) \ | |
78 template(GetObjectMonitorUsage) \ | |
79 template(GetCurrentContendedMonitor) \ | |
80 template(GetStackTrace) \ | |
81 template(GetMultipleStackTraces) \ | |
82 template(GetAllStackTraces) \ | |
83 template(GetThreadListStackTraces) \ | |
84 template(GetFrameCount) \ | |
85 template(GetFrameLocation) \ | |
86 template(ChangeBreakpoints) \ | |
87 template(GetOrSetLocal) \ | |
88 template(GetCurrentLocation) \ | |
89 template(EnterInterpOnlyMode) \ | |
90 template(ChangeSingleStep) \ | |
91 template(HeapWalkOperation) \ | |
92 template(HeapIterateOperation) \ | |
93 template(ReportJavaOutOfMemory) \ | |
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94 template(JFRCheckpoint) \ |
0 | 95 template(Exit) \ |
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96 template(LinuxDllLoad) \ |
17827 | 97 template(RotateGCLog) \ |
17867 | 98 template(WhiteBoxOperation) \ |
0 | 99 |
6197 | 100 class VM_Operation: public CHeapObj<mtInternal> { |
0 | 101 public: |
102 enum Mode { | |
103 _safepoint, // blocking, safepoint, vm_op C-heap allocated | |
104 _no_safepoint, // blocking, no safepoint, vm_op C-Heap allocated | |
105 _concurrent, // non-blocking, no safepoint, vm_op C-Heap allocated | |
106 _async_safepoint // non-blocking, safepoint, vm_op C-Heap allocated | |
107 }; | |
108 | |
109 enum VMOp_Type { | |
110 VM_OPS_DO(VM_OP_ENUM) | |
111 VMOp_Terminating | |
112 }; | |
113 | |
114 private: | |
115 Thread* _calling_thread; | |
116 ThreadPriority _priority; | |
117 long _timestamp; | |
118 VM_Operation* _next; | |
119 VM_Operation* _prev; | |
120 | |
121 // The VM operation name array | |
122 static const char* _names[]; | |
123 | |
124 public: | |
125 VM_Operation() { _calling_thread = NULL; _next = NULL; _prev = NULL; } | |
126 virtual ~VM_Operation() {} | |
127 | |
128 // VM operation support (used by VM thread) | |
129 Thread* calling_thread() const { return _calling_thread; } | |
130 ThreadPriority priority() { return _priority; } | |
131 void set_calling_thread(Thread* thread, ThreadPriority priority); | |
132 | |
133 long timestamp() const { return _timestamp; } | |
134 void set_timestamp(long timestamp) { _timestamp = timestamp; } | |
135 | |
136 // Called by VM thread - does in turn invoke doit(). Do not override this | |
137 void evaluate(); | |
138 | |
139 // evaluate() is called by the VMThread and in turn calls doit(). | |
140 // If the thread invoking VMThread::execute((VM_Operation*) is a JavaThread, | |
141 // doit_prologue() is called in that thread before transferring control to | |
142 // the VMThread. | |
143 // If doit_prologue() returns true the VM operation will proceed, and | |
144 // doit_epilogue() will be called by the JavaThread once the VM operation | |
145 // completes. If doit_prologue() returns false the VM operation is cancelled. | |
146 virtual void doit() = 0; | |
147 virtual bool doit_prologue() { return true; }; | |
148 virtual void doit_epilogue() {}; // Note: Not called if mode is: _concurrent | |
149 | |
150 // Type test | |
151 virtual bool is_methodCompiler() const { return false; } | |
152 | |
153 // Linking | |
154 VM_Operation *next() const { return _next; } | |
155 VM_Operation *prev() const { return _prev; } | |
156 void set_next(VM_Operation *next) { _next = next; } | |
157 void set_prev(VM_Operation *prev) { _prev = prev; } | |
158 | |
159 // Configuration. Override these appropriatly in subclasses. | |
160 virtual VMOp_Type type() const = 0; | |
161 virtual Mode evaluation_mode() const { return _safepoint; } | |
162 virtual bool allow_nested_vm_operations() const { return false; } | |
163 virtual bool is_cheap_allocated() const { return false; } | |
164 virtual void oops_do(OopClosure* f) { /* do nothing */ }; | |
165 | |
166 // CAUTION: <don't hang yourself with following rope> | |
167 // If you override these methods, make sure that the evaluation | |
168 // of these methods is race-free and non-blocking, since these | |
169 // methods may be evaluated either by the mutators or by the | |
170 // vm thread, either concurrently with mutators or with the mutators | |
171 // stopped. In other words, taking locks is verboten, and if there | |
172 // are any races in evaluating the conditions, they'd better be benign. | |
173 virtual bool evaluate_at_safepoint() const { | |
174 return evaluation_mode() == _safepoint || | |
175 evaluation_mode() == _async_safepoint; | |
176 } | |
177 virtual bool evaluate_concurrently() const { | |
178 return evaluation_mode() == _concurrent || | |
179 evaluation_mode() == _async_safepoint; | |
180 } | |
181 | |
10405 | 182 static const char* mode_to_string(Mode mode); |
183 | |
0 | 184 // Debugging |
185 void print_on_error(outputStream* st) const; | |
186 const char* name() const { return _names[type()]; } | |
187 static const char* name(int type) { | |
188 assert(type >= 0 && type < VMOp_Terminating, "invalid VM operation type"); | |
189 return _names[type]; | |
190 } | |
191 #ifndef PRODUCT | |
192 void print_on(outputStream* st) const { print_on_error(st); } | |
193 #endif | |
194 }; | |
195 | |
196 class VM_ThreadStop: public VM_Operation { | |
197 private: | |
198 oop _thread; // The Thread that the Throwable is thrown against | |
199 oop _throwable; // The Throwable thrown at the target Thread | |
200 public: | |
201 // All oops are passed as JNI handles, since there is no guarantee that a GC might happen before the | |
202 // VM operation is executed. | |
203 VM_ThreadStop(oop thread, oop throwable) { | |
204 _thread = thread; | |
205 _throwable = throwable; | |
206 } | |
207 VMOp_Type type() const { return VMOp_ThreadStop; } | |
208 oop target_thread() const { return _thread; } | |
209 oop throwable() const { return _throwable;} | |
210 void doit(); | |
211 // We deoptimize if top-most frame is compiled - this might require a C2I adapter to be generated | |
212 bool allow_nested_vm_operations() const { return true; } | |
213 Mode evaluation_mode() const { return _async_safepoint; } | |
214 bool is_cheap_allocated() const { return true; } | |
215 | |
216 // GC support | |
217 void oops_do(OopClosure* f) { | |
218 f->do_oop(&_thread); f->do_oop(&_throwable); | |
219 } | |
220 }; | |
221 | |
222 // dummy vm op, evaluated just to force a safepoint | |
223 class VM_ForceSafepoint: public VM_Operation { | |
224 public: | |
225 VM_ForceSafepoint() {} | |
226 void doit() {} | |
227 VMOp_Type type() const { return VMOp_ForceSafepoint; } | |
228 }; | |
229 | |
230 // dummy vm op, evaluated just to force a safepoint | |
231 class VM_ForceAsyncSafepoint: public VM_Operation { | |
232 public: | |
233 VM_ForceAsyncSafepoint() {} | |
234 void doit() {} | |
235 VMOp_Type type() const { return VMOp_ForceAsyncSafepoint; } | |
236 Mode evaluation_mode() const { return _async_safepoint; } | |
237 bool is_cheap_allocated() const { return true; } | |
238 }; | |
239 | |
240 class VM_Deoptimize: public VM_Operation { | |
241 public: | |
242 VM_Deoptimize() {} | |
243 VMOp_Type type() const { return VMOp_Deoptimize; } | |
244 void doit(); | |
245 bool allow_nested_vm_operations() const { return true; } | |
246 }; | |
247 | |
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248 |
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249 // Deopt helper that can deoptimize frames in threads other than the |
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250 // current thread. Only used through Deoptimization::deoptimize_frame. |
0 | 251 class VM_DeoptimizeFrame: public VM_Operation { |
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252 friend class Deoptimization; |
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253 |
0 | 254 private: |
255 JavaThread* _thread; | |
256 intptr_t* _id; | |
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257 VM_DeoptimizeFrame(JavaThread* thread, intptr_t* id); |
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258 |
0 | 259 public: |
260 VMOp_Type type() const { return VMOp_DeoptimizeFrame; } | |
261 void doit(); | |
262 bool allow_nested_vm_operations() const { return true; } | |
263 }; | |
264 | |
265 #ifndef PRODUCT | |
266 class VM_DeoptimizeAll: public VM_Operation { | |
267 private: | |
268 KlassHandle _dependee; | |
269 public: | |
270 VM_DeoptimizeAll() {} | |
271 VMOp_Type type() const { return VMOp_DeoptimizeAll; } | |
272 void doit(); | |
273 bool allow_nested_vm_operations() const { return true; } | |
274 }; | |
275 | |
276 | |
277 class VM_ZombieAll: public VM_Operation { | |
278 public: | |
279 VM_ZombieAll() {} | |
280 VMOp_Type type() const { return VMOp_ZombieAll; } | |
281 void doit(); | |
282 bool allow_nested_vm_operations() const { return true; } | |
283 }; | |
284 #endif // PRODUCT | |
285 | |
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286 class VM_UnlinkSymbols: public VM_Operation { |
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287 public: |
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288 VM_UnlinkSymbols() {} |
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289 VMOp_Type type() const { return VMOp_UnlinkSymbols; } |
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290 void doit(); |
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291 bool allow_nested_vm_operations() const { return true; } |
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292 }; |
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293 |
0 | 294 class VM_Verify: public VM_Operation { |
295 private: | |
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296 bool _silent; |
0 | 297 public: |
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298 VM_Verify(bool silent = VerifySilently) : _silent(silent) {} |
0 | 299 VMOp_Type type() const { return VMOp_Verify; } |
300 void doit(); | |
301 }; | |
302 | |
303 | |
304 class VM_PrintThreads: public VM_Operation { | |
305 private: | |
306 outputStream* _out; | |
307 bool _print_concurrent_locks; | |
308 public: | |
309 VM_PrintThreads() { _out = tty; _print_concurrent_locks = PrintConcurrentLocks; } | |
310 VM_PrintThreads(outputStream* out, bool print_concurrent_locks) { _out = out; _print_concurrent_locks = print_concurrent_locks; } | |
311 VMOp_Type type() const { return VMOp_PrintThreads; } | |
312 void doit(); | |
313 bool doit_prologue(); | |
314 void doit_epilogue(); | |
315 }; | |
316 | |
317 class VM_PrintJNI: public VM_Operation { | |
318 private: | |
319 outputStream* _out; | |
320 public: | |
321 VM_PrintJNI() { _out = tty; } | |
322 VM_PrintJNI(outputStream* out) { _out = out; } | |
323 VMOp_Type type() const { return VMOp_PrintJNI; } | |
324 void doit(); | |
325 }; | |
326 | |
327 class DeadlockCycle; | |
328 class VM_FindDeadlocks: public VM_Operation { | |
329 private: | |
330 bool _concurrent_locks; | |
331 DeadlockCycle* _deadlocks; | |
332 outputStream* _out; | |
333 | |
334 public: | |
335 VM_FindDeadlocks(bool concurrent_locks) : _concurrent_locks(concurrent_locks), _out(NULL), _deadlocks(NULL) {}; | |
336 VM_FindDeadlocks(outputStream* st) : _concurrent_locks(true), _out(st), _deadlocks(NULL) {}; | |
337 ~VM_FindDeadlocks(); | |
338 | |
339 DeadlockCycle* result() { return _deadlocks; }; | |
340 VMOp_Type type() const { return VMOp_FindDeadlocks; } | |
341 void doit(); | |
342 bool doit_prologue(); | |
343 }; | |
344 | |
345 class ThreadDumpResult; | |
346 class ThreadSnapshot; | |
347 class ThreadConcurrentLocks; | |
348 | |
349 class VM_ThreadDump : public VM_Operation { | |
350 private: | |
351 ThreadDumpResult* _result; | |
352 int _num_threads; | |
353 GrowableArray<instanceHandle>* _threads; | |
354 int _max_depth; | |
355 bool _with_locked_monitors; | |
356 bool _with_locked_synchronizers; | |
357 | |
358 ThreadSnapshot* snapshot_thread(JavaThread* java_thread, ThreadConcurrentLocks* tcl); | |
359 | |
360 public: | |
361 VM_ThreadDump(ThreadDumpResult* result, | |
362 int max_depth, // -1 indicates entire stack | |
363 bool with_locked_monitors, | |
364 bool with_locked_synchronizers); | |
365 | |
366 VM_ThreadDump(ThreadDumpResult* result, | |
367 GrowableArray<instanceHandle>* threads, | |
368 int num_threads, // -1 indicates entire stack | |
369 int max_depth, | |
370 bool with_locked_monitors, | |
371 bool with_locked_synchronizers); | |
372 | |
373 VMOp_Type type() const { return VMOp_ThreadDump; } | |
374 void doit(); | |
375 bool doit_prologue(); | |
376 void doit_epilogue(); | |
377 }; | |
378 | |
379 | |
380 class VM_Exit: public VM_Operation { | |
381 private: | |
382 int _exit_code; | |
383 static volatile bool _vm_exited; | |
384 static Thread * _shutdown_thread; | |
385 static void wait_if_vm_exited(); | |
386 public: | |
387 VM_Exit(int exit_code) { | |
388 _exit_code = exit_code; | |
389 } | |
390 static int wait_for_threads_in_native_to_block(); | |
391 static int set_vm_exited(); | |
392 static bool vm_exited() { return _vm_exited; } | |
393 static void block_if_vm_exited() { | |
394 if (_vm_exited) { | |
395 wait_if_vm_exited(); | |
396 } | |
397 } | |
398 VMOp_Type type() const { return VMOp_Exit; } | |
399 void doit(); | |
400 }; | |
1972 | 401 |
17827 | 402 |
403 class VM_RotateGCLog: public VM_Operation { | |
404 private: | |
405 outputStream* _out; | |
406 | |
407 public: | |
408 VM_RotateGCLog(outputStream* st) : _out(st) {} | |
409 VMOp_Type type() const { return VMOp_RotateGCLog; } | |
410 void doit() { gclog_or_tty->rotate_log(true, _out); } | |
411 }; | |
412 | |
1972 | 413 #endif // SHARE_VM_RUNTIME_VM_OPERATIONS_HPP |