Mercurial > hg > truffle
annotate src/share/vm/prims/jvmtiEventController.cpp @ 5130:ab038e0d6b43
Merge
author | Lukas Stadler <lukas.stadler@jku.at> |
---|---|
date | Wed, 21 Mar 2012 11:28:22 +0100 |
parents | 1d1603768966 |
children | 6b19fe41b577 |
rev | line source |
---|---|
0 | 1 /* |
2426
1d1603768966
7010070: Update all 2010 Oracle-changed OpenJDK files to have the proper copyright dates - second pass
trims
parents:
2126
diff
changeset
|
2 * Copyright (c) 2003, 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 * | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1213
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1213
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:
1213
diff
changeset
|
21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "interpreter/interpreter.hpp" | |
27 #include "jvmtifiles/jvmtiEnv.hpp" | |
28 #include "memory/resourceArea.hpp" | |
29 #include "prims/jvmtiEventController.hpp" | |
30 #include "prims/jvmtiEventController.inline.hpp" | |
31 #include "prims/jvmtiExport.hpp" | |
32 #include "prims/jvmtiImpl.hpp" | |
33 #include "prims/jvmtiThreadState.inline.hpp" | |
34 #include "runtime/frame.hpp" | |
35 #include "runtime/thread.hpp" | |
36 #include "runtime/vframe.hpp" | |
37 #include "runtime/vframe_hp.hpp" | |
38 #include "runtime/vmThread.hpp" | |
39 #include "runtime/vm_operations.hpp" | |
0 | 40 |
41 #ifdef JVMTI_TRACE | |
42 #define EC_TRACE(out) if (JvmtiTrace::trace_event_controller()) { SafeResourceMark rm; tty->print_cr out; } while (0) | |
43 #else | |
44 #define EC_TRACE(out) | |
45 #endif /*JVMTI_TRACE */ | |
46 | |
47 // bits for standard events | |
48 | |
49 static const jlong SINGLE_STEP_BIT = (((jlong)1) << (JVMTI_EVENT_SINGLE_STEP - TOTAL_MIN_EVENT_TYPE_VAL)); | |
50 static const jlong FRAME_POP_BIT = (((jlong)1) << (JVMTI_EVENT_FRAME_POP - TOTAL_MIN_EVENT_TYPE_VAL)); | |
51 static const jlong BREAKPOINT_BIT = (((jlong)1) << (JVMTI_EVENT_BREAKPOINT - TOTAL_MIN_EVENT_TYPE_VAL)); | |
52 static const jlong FIELD_ACCESS_BIT = (((jlong)1) << (JVMTI_EVENT_FIELD_ACCESS - TOTAL_MIN_EVENT_TYPE_VAL)); | |
53 static const jlong FIELD_MODIFICATION_BIT = (((jlong)1) << (JVMTI_EVENT_FIELD_MODIFICATION - TOTAL_MIN_EVENT_TYPE_VAL)); | |
54 static const jlong METHOD_ENTRY_BIT = (((jlong)1) << (JVMTI_EVENT_METHOD_ENTRY - TOTAL_MIN_EVENT_TYPE_VAL)); | |
55 static const jlong METHOD_EXIT_BIT = (((jlong)1) << (JVMTI_EVENT_METHOD_EXIT - TOTAL_MIN_EVENT_TYPE_VAL)); | |
56 static const jlong CLASS_FILE_LOAD_HOOK_BIT = (((jlong)1) << (JVMTI_EVENT_CLASS_FILE_LOAD_HOOK - TOTAL_MIN_EVENT_TYPE_VAL)); | |
57 static const jlong NATIVE_METHOD_BIND_BIT = (((jlong)1) << (JVMTI_EVENT_NATIVE_METHOD_BIND - TOTAL_MIN_EVENT_TYPE_VAL)); | |
58 static const jlong VM_START_BIT = (((jlong)1) << (JVMTI_EVENT_VM_START - TOTAL_MIN_EVENT_TYPE_VAL)); | |
59 static const jlong VM_INIT_BIT = (((jlong)1) << (JVMTI_EVENT_VM_INIT - TOTAL_MIN_EVENT_TYPE_VAL)); | |
60 static const jlong VM_DEATH_BIT = (((jlong)1) << (JVMTI_EVENT_VM_DEATH - TOTAL_MIN_EVENT_TYPE_VAL)); | |
61 static const jlong CLASS_LOAD_BIT = (((jlong)1) << (JVMTI_EVENT_CLASS_LOAD - TOTAL_MIN_EVENT_TYPE_VAL)); | |
62 static const jlong CLASS_PREPARE_BIT = (((jlong)1) << (JVMTI_EVENT_CLASS_PREPARE - TOTAL_MIN_EVENT_TYPE_VAL)); | |
63 static const jlong THREAD_START_BIT = (((jlong)1) << (JVMTI_EVENT_THREAD_START - TOTAL_MIN_EVENT_TYPE_VAL)); | |
64 static const jlong THREAD_END_BIT = (((jlong)1) << (JVMTI_EVENT_THREAD_END - TOTAL_MIN_EVENT_TYPE_VAL)); | |
65 static const jlong EXCEPTION_THROW_BIT = (((jlong)1) << (JVMTI_EVENT_EXCEPTION - TOTAL_MIN_EVENT_TYPE_VAL)); | |
66 static const jlong EXCEPTION_CATCH_BIT = (((jlong)1) << (JVMTI_EVENT_EXCEPTION_CATCH - TOTAL_MIN_EVENT_TYPE_VAL)); | |
67 static const jlong MONITOR_CONTENDED_ENTER_BIT = (((jlong)1) << (JVMTI_EVENT_MONITOR_CONTENDED_ENTER - TOTAL_MIN_EVENT_TYPE_VAL)); | |
68 static const jlong MONITOR_CONTENDED_ENTERED_BIT = (((jlong)1) << (JVMTI_EVENT_MONITOR_CONTENDED_ENTERED - TOTAL_MIN_EVENT_TYPE_VAL)); | |
69 static const jlong MONITOR_WAIT_BIT = (((jlong)1) << (JVMTI_EVENT_MONITOR_WAIT - TOTAL_MIN_EVENT_TYPE_VAL)); | |
70 static const jlong MONITOR_WAITED_BIT = (((jlong)1) << (JVMTI_EVENT_MONITOR_WAITED - TOTAL_MIN_EVENT_TYPE_VAL)); | |
71 static const jlong DYNAMIC_CODE_GENERATED_BIT = (((jlong)1) << (JVMTI_EVENT_DYNAMIC_CODE_GENERATED - TOTAL_MIN_EVENT_TYPE_VAL)); | |
72 static const jlong DATA_DUMP_BIT = (((jlong)1) << (JVMTI_EVENT_DATA_DUMP_REQUEST - TOTAL_MIN_EVENT_TYPE_VAL)); | |
73 static const jlong COMPILED_METHOD_LOAD_BIT = (((jlong)1) << (JVMTI_EVENT_COMPILED_METHOD_LOAD - TOTAL_MIN_EVENT_TYPE_VAL)); | |
74 static const jlong COMPILED_METHOD_UNLOAD_BIT = (((jlong)1) << (JVMTI_EVENT_COMPILED_METHOD_UNLOAD - TOTAL_MIN_EVENT_TYPE_VAL)); | |
75 static const jlong GARBAGE_COLLECTION_START_BIT = (((jlong)1) << (JVMTI_EVENT_GARBAGE_COLLECTION_START - TOTAL_MIN_EVENT_TYPE_VAL)); | |
76 static const jlong GARBAGE_COLLECTION_FINISH_BIT = (((jlong)1) << (JVMTI_EVENT_GARBAGE_COLLECTION_FINISH - TOTAL_MIN_EVENT_TYPE_VAL)); | |
77 static const jlong OBJECT_FREE_BIT = (((jlong)1) << (JVMTI_EVENT_OBJECT_FREE - TOTAL_MIN_EVENT_TYPE_VAL)); | |
78 static const jlong RESOURCE_EXHAUSTED_BIT = (((jlong)1) << (JVMTI_EVENT_RESOURCE_EXHAUSTED - TOTAL_MIN_EVENT_TYPE_VAL)); | |
79 static const jlong VM_OBJECT_ALLOC_BIT = (((jlong)1) << (JVMTI_EVENT_VM_OBJECT_ALLOC - TOTAL_MIN_EVENT_TYPE_VAL)); | |
80 | |
81 // bits for extension events | |
82 static const jlong CLASS_UNLOAD_BIT = (((jlong)1) << (EXT_EVENT_CLASS_UNLOAD - TOTAL_MIN_EVENT_TYPE_VAL)); | |
83 | |
84 | |
85 static const jlong MONITOR_BITS = MONITOR_CONTENDED_ENTER_BIT | MONITOR_CONTENDED_ENTERED_BIT | | |
86 MONITOR_WAIT_BIT | MONITOR_WAITED_BIT; | |
87 static const jlong EXCEPTION_BITS = EXCEPTION_THROW_BIT | EXCEPTION_CATCH_BIT; | |
88 static const jlong INTERP_EVENT_BITS = SINGLE_STEP_BIT | METHOD_ENTRY_BIT | METHOD_EXIT_BIT | | |
89 FRAME_POP_BIT | FIELD_ACCESS_BIT | FIELD_MODIFICATION_BIT; | |
90 static const jlong THREAD_FILTERED_EVENT_BITS = INTERP_EVENT_BITS | EXCEPTION_BITS | MONITOR_BITS | | |
91 BREAKPOINT_BIT | CLASS_LOAD_BIT | CLASS_PREPARE_BIT | THREAD_END_BIT; | |
92 static const jlong NEED_THREAD_LIFE_EVENTS = THREAD_FILTERED_EVENT_BITS | THREAD_START_BIT; | |
93 static const jlong EARLY_EVENT_BITS = CLASS_FILE_LOAD_HOOK_BIT | | |
94 VM_START_BIT | VM_INIT_BIT | VM_DEATH_BIT | NATIVE_METHOD_BIND_BIT | | |
95 THREAD_START_BIT | THREAD_END_BIT | | |
96 DYNAMIC_CODE_GENERATED_BIT; | |
97 static const jlong GLOBAL_EVENT_BITS = ~THREAD_FILTERED_EVENT_BITS; | |
1213
6deeaebad47a
6902182: 4/4 Starting with jdwp agent should not incur performance penalty
dcubed
parents:
609
diff
changeset
|
98 static const jlong SHOULD_POST_ON_EXCEPTIONS_BITS = EXCEPTION_BITS | METHOD_EXIT_BIT | FRAME_POP_BIT; |
0 | 99 |
100 /////////////////////////////////////////////////////////////// | |
101 // | |
102 // JvmtiEventEnabled | |
103 // | |
104 | |
105 JvmtiEventEnabled::JvmtiEventEnabled() { | |
106 clear(); | |
107 } | |
108 | |
109 | |
110 void JvmtiEventEnabled::clear() { | |
111 _enabled_bits = 0; | |
112 #ifndef PRODUCT | |
113 _init_guard = JEE_INIT_GUARD; | |
114 #endif | |
115 } | |
116 | |
117 void JvmtiEventEnabled::set_enabled(jvmtiEvent event_type, bool enabled) { | |
118 jlong bits = get_bits(); | |
119 jlong mask = bit_for(event_type); | |
120 if (enabled) { | |
121 bits |= mask; | |
122 } else { | |
123 bits &= ~mask; | |
124 } | |
125 set_bits(bits); | |
126 } | |
127 | |
128 | |
129 /////////////////////////////////////////////////////////////// | |
130 // | |
131 // JvmtiEnvThreadEventEnable | |
132 // | |
133 | |
134 JvmtiEnvThreadEventEnable::JvmtiEnvThreadEventEnable() { | |
135 _event_user_enabled.clear(); | |
136 _event_enabled.clear(); | |
137 } | |
138 | |
139 | |
140 JvmtiEnvThreadEventEnable::~JvmtiEnvThreadEventEnable() { | |
141 _event_user_enabled.clear(); | |
142 _event_enabled.clear(); | |
143 } | |
144 | |
145 | |
146 /////////////////////////////////////////////////////////////// | |
147 // | |
148 // JvmtiThreadEventEnable | |
149 // | |
150 | |
151 JvmtiThreadEventEnable::JvmtiThreadEventEnable() { | |
152 _event_enabled.clear(); | |
153 } | |
154 | |
155 | |
156 JvmtiThreadEventEnable::~JvmtiThreadEventEnable() { | |
157 _event_enabled.clear(); | |
158 } | |
159 | |
160 | |
161 /////////////////////////////////////////////////////////////// | |
162 // | |
163 // JvmtiEnvEventEnable | |
164 // | |
165 | |
166 JvmtiEnvEventEnable::JvmtiEnvEventEnable() { | |
167 _event_user_enabled.clear(); | |
168 _event_callback_enabled.clear(); | |
169 _event_enabled.clear(); | |
170 } | |
171 | |
172 | |
173 JvmtiEnvEventEnable::~JvmtiEnvEventEnable() { | |
174 _event_user_enabled.clear(); | |
175 _event_callback_enabled.clear(); | |
176 _event_enabled.clear(); | |
177 } | |
178 | |
179 | |
180 /////////////////////////////////////////////////////////////// | |
181 // | |
182 // VM_EnterInterpOnlyMode | |
183 // | |
184 | |
185 class VM_EnterInterpOnlyMode : public VM_Operation { | |
186 private: | |
187 JvmtiThreadState *_state; | |
188 | |
189 public: | |
190 VM_EnterInterpOnlyMode(JvmtiThreadState *state); | |
191 | |
192 bool allow_nested_vm_operations() const { return true; } | |
193 VMOp_Type type() const { return VMOp_EnterInterpOnlyMode; } | |
194 void doit(); | |
195 | |
196 // to do: this same function is in jvmtiImpl - should be in one place | |
197 bool can_be_deoptimized(vframe* vf) { | |
198 return (vf->is_compiled_frame() && vf->fr().can_be_deoptimized()); | |
199 } | |
200 }; | |
201 | |
202 VM_EnterInterpOnlyMode::VM_EnterInterpOnlyMode(JvmtiThreadState *state) | |
203 : _state(state) | |
204 { | |
205 } | |
206 | |
207 | |
208 void VM_EnterInterpOnlyMode::doit() { | |
209 // Set up the current stack depth for later tracking | |
210 _state->invalidate_cur_stack_depth(); | |
211 | |
212 _state->enter_interp_only_mode(); | |
213 | |
214 JavaThread *thread = _state->get_thread(); | |
215 if (thread->has_last_Java_frame()) { | |
216 // If running in fullspeed mode, single stepping is implemented | |
217 // as follows: first, the interpreter does not dispatch to | |
218 // compiled code for threads that have single stepping enabled; | |
219 // second, we deoptimize all methods on the thread's stack when | |
220 // interpreted-only mode is enabled the first time for a given | |
221 // thread (nothing to do if no Java frames yet). | |
222 int num_marked = 0; | |
223 ResourceMark resMark; | |
224 RegisterMap rm(thread, false); | |
225 for (vframe* vf = thread->last_java_vframe(&rm); vf; vf = vf->sender()) { | |
226 if (can_be_deoptimized(vf)) { | |
227 ((compiledVFrame*) vf)->code()->mark_for_deoptimization(); | |
228 ++num_marked; | |
229 } | |
230 } | |
231 if (num_marked > 0) { | |
232 VM_Deoptimize op; | |
233 VMThread::execute(&op); | |
234 } | |
235 } | |
236 } | |
237 | |
238 | |
239 /////////////////////////////////////////////////////////////// | |
240 // | |
241 // VM_ChangeSingleStep | |
242 // | |
243 | |
244 class VM_ChangeSingleStep : public VM_Operation { | |
245 private: | |
246 bool _on; | |
247 | |
248 public: | |
249 VM_ChangeSingleStep(bool on); | |
250 VMOp_Type type() const { return VMOp_ChangeSingleStep; } | |
251 bool allow_nested_vm_operations() const { return true; } | |
252 void doit(); // method definition is after definition of JvmtiEventControllerPrivate because of scoping | |
253 }; | |
254 | |
255 | |
256 VM_ChangeSingleStep::VM_ChangeSingleStep(bool on) | |
257 : _on(on != 0) | |
258 { | |
259 } | |
260 | |
261 | |
262 | |
263 | |
264 /////////////////////////////////////////////////////////////// | |
265 // | |
266 // JvmtiEventControllerPrivate | |
267 // | |
268 // Private internal implementation methods for JvmtiEventController. | |
269 // | |
270 // These methods are thread safe either because they are called | |
271 // in early VM initialization which is single threaded, or they | |
272 // hold the JvmtiThreadState_lock. | |
273 // | |
274 | |
275 class JvmtiEventControllerPrivate : public AllStatic { | |
276 static bool _initialized; | |
277 public: | |
278 static void set_should_post_single_step(bool on); | |
279 static void enter_interp_only_mode(JvmtiThreadState *state); | |
280 static void leave_interp_only_mode(JvmtiThreadState *state); | |
281 static void recompute_enabled(); | |
282 static jlong recompute_env_enabled(JvmtiEnvBase* env); | |
283 static jlong recompute_env_thread_enabled(JvmtiEnvThreadState* ets, JvmtiThreadState* state); | |
284 static jlong recompute_thread_enabled(JvmtiThreadState *state); | |
285 static void event_init(); | |
286 | |
287 static void set_user_enabled(JvmtiEnvBase *env, JavaThread *thread, | |
288 jvmtiEvent event_type, bool enabled); | |
289 static void set_event_callbacks(JvmtiEnvBase *env, | |
290 const jvmtiEventCallbacks* callbacks, | |
291 jint size_of_callbacks); | |
292 | |
293 static void set_extension_event_callback(JvmtiEnvBase *env, | |
294 jint extension_event_index, | |
295 jvmtiExtensionEvent callback); | |
296 | |
297 static void set_frame_pop(JvmtiEnvThreadState *env_thread, JvmtiFramePop fpop); | |
298 static void clear_frame_pop(JvmtiEnvThreadState *env_thread, JvmtiFramePop fpop); | |
299 static void clear_to_frame_pop(JvmtiEnvThreadState *env_thread, JvmtiFramePop fpop); | |
300 static void change_field_watch(jvmtiEvent event_type, bool added); | |
301 | |
302 static void thread_started(JavaThread *thread); | |
303 static void thread_ended(JavaThread *thread); | |
304 | |
305 static void env_initialize(JvmtiEnvBase *env); | |
306 static void env_dispose(JvmtiEnvBase *env); | |
307 | |
308 static void vm_start(); | |
309 static void vm_init(); | |
310 static void vm_death(); | |
311 | |
312 static void trace_changed(JvmtiThreadState *state, jlong now_enabled, jlong changed); | |
313 static void trace_changed(jlong now_enabled, jlong changed); | |
314 }; | |
315 | |
316 bool JvmtiEventControllerPrivate::_initialized = false; | |
317 | |
318 void JvmtiEventControllerPrivate::set_should_post_single_step(bool on) { | |
319 // we have permission to do this, VM op doesn't | |
320 JvmtiExport::set_should_post_single_step(on); | |
321 } | |
322 | |
323 | |
324 // This change must always be occur when at a safepoint. | |
325 // Being at a safepoint causes the interpreter to use the | |
326 // safepoint dispatch table which we overload to find single | |
327 // step points. Just to be sure that it has been set, we | |
328 // call notice_safepoints when turning on single stepping. | |
329 // When we leave our current safepoint, should_post_single_step | |
330 // will be checked by the interpreter, and the table kept | |
331 // or changed accordingly. | |
332 void VM_ChangeSingleStep::doit() { | |
333 JvmtiEventControllerPrivate::set_should_post_single_step(_on); | |
334 if (_on) { | |
335 Interpreter::notice_safepoints(); | |
336 } | |
337 } | |
338 | |
339 | |
340 void JvmtiEventControllerPrivate::enter_interp_only_mode(JvmtiThreadState *state) { | |
341 EC_TRACE(("JVMTI [%s] # Entering interpreter only mode", | |
342 JvmtiTrace::safe_get_thread_name(state->get_thread()))); | |
343 | |
344 VM_EnterInterpOnlyMode op(state); | |
345 VMThread::execute(&op); | |
346 } | |
347 | |
348 | |
349 void | |
350 JvmtiEventControllerPrivate::leave_interp_only_mode(JvmtiThreadState *state) { | |
351 EC_TRACE(("JVMTI [%s] # Leaving interpreter only mode", | |
352 JvmtiTrace::safe_get_thread_name(state->get_thread()))); | |
353 state->leave_interp_only_mode(); | |
354 } | |
355 | |
356 | |
357 void | |
358 JvmtiEventControllerPrivate::trace_changed(JvmtiThreadState *state, jlong now_enabled, jlong changed) { | |
359 #ifdef JVMTI_TRACE | |
360 if (JvmtiTrace::trace_event_controller()) { | |
361 SafeResourceMark rm; | |
362 // traces standard events only | |
363 for (int ei = JVMTI_MIN_EVENT_TYPE_VAL; ei <= JVMTI_MAX_EVENT_TYPE_VAL; ++ei) { | |
364 jlong bit = JvmtiEventEnabled::bit_for((jvmtiEvent)ei); | |
365 if (changed & bit) { | |
366 // it changed, print it | |
367 tty->print_cr("JVMTI [%s] # %s event %s", | |
368 JvmtiTrace::safe_get_thread_name(state->get_thread()), | |
369 (now_enabled & bit)? "Enabling" : "Disabling", JvmtiTrace::event_name((jvmtiEvent)ei)); | |
370 } | |
371 } | |
372 } | |
373 #endif /*JVMTI_TRACE */ | |
374 } | |
375 | |
376 | |
377 void | |
378 JvmtiEventControllerPrivate::trace_changed(jlong now_enabled, jlong changed) { | |
379 #ifdef JVMTI_TRACE | |
380 if (JvmtiTrace::trace_event_controller()) { | |
381 SafeResourceMark rm; | |
382 // traces standard events only | |
383 for (int ei = JVMTI_MIN_EVENT_TYPE_VAL; ei <= JVMTI_MAX_EVENT_TYPE_VAL; ++ei) { | |
384 jlong bit = JvmtiEventEnabled::bit_for((jvmtiEvent)ei); | |
385 if (changed & bit) { | |
386 // it changed, print it | |
387 tty->print_cr("JVMTI [-] # %s event %s", | |
388 (now_enabled & bit)? "Enabling" : "Disabling", JvmtiTrace::event_name((jvmtiEvent)ei)); | |
389 } | |
390 } | |
391 } | |
392 #endif /*JVMTI_TRACE */ | |
393 } | |
394 | |
395 | |
396 // For the specified env: compute the currently truly enabled events | |
397 // set external state accordingly. | |
398 // Return value and set value must include all events. | |
399 // But outside this class, only non-thread-filtered events can be queried.. | |
400 jlong | |
401 JvmtiEventControllerPrivate::recompute_env_enabled(JvmtiEnvBase* env) { | |
402 jlong was_enabled = env->env_event_enable()->_event_enabled.get_bits(); | |
403 jlong now_enabled = | |
404 env->env_event_enable()->_event_callback_enabled.get_bits() & | |
405 env->env_event_enable()->_event_user_enabled.get_bits(); | |
406 | |
407 switch (JvmtiEnv::get_phase()) { | |
408 case JVMTI_PHASE_PRIMORDIAL: | |
409 case JVMTI_PHASE_ONLOAD: | |
410 // only these events allowed in primordial or onload phase | |
411 now_enabled &= (EARLY_EVENT_BITS & ~THREAD_FILTERED_EVENT_BITS); | |
412 break; | |
413 case JVMTI_PHASE_START: | |
414 // only these events allowed in start phase | |
415 now_enabled &= EARLY_EVENT_BITS; | |
416 break; | |
417 case JVMTI_PHASE_LIVE: | |
418 // all events allowed during live phase | |
419 break; | |
420 case JVMTI_PHASE_DEAD: | |
421 // no events allowed when dead | |
422 now_enabled = 0; | |
423 break; | |
424 default: | |
425 assert(false, "no other phases - sanity check"); | |
426 break; | |
427 } | |
428 | |
429 // will we really send these events to this env | |
430 env->env_event_enable()->_event_enabled.set_bits(now_enabled); | |
431 | |
432 trace_changed(now_enabled, (now_enabled ^ was_enabled) & ~THREAD_FILTERED_EVENT_BITS); | |
433 | |
434 return now_enabled; | |
435 } | |
436 | |
437 | |
438 // For the specified env and thread: compute the currently truly enabled events | |
439 // set external state accordingly. Only thread-filtered events are included. | |
440 jlong | |
441 JvmtiEventControllerPrivate::recompute_env_thread_enabled(JvmtiEnvThreadState* ets, JvmtiThreadState* state) { | |
442 JvmtiEnv *env = ets->get_env(); | |
443 | |
444 jlong was_enabled = ets->event_enable()->_event_enabled.get_bits(); | |
445 jlong now_enabled = THREAD_FILTERED_EVENT_BITS & | |
446 env->env_event_enable()->_event_callback_enabled.get_bits() & | |
447 (env->env_event_enable()->_event_user_enabled.get_bits() | | |
448 ets->event_enable()->_event_user_enabled.get_bits()); | |
449 | |
450 // for frame pops and field watchs, computed enabled state | |
451 // is only true if an event has been requested | |
452 if (!ets->has_frame_pops()) { | |
453 now_enabled &= ~FRAME_POP_BIT; | |
454 } | |
455 if (*((int *)JvmtiExport::get_field_access_count_addr()) == 0) { | |
456 now_enabled &= ~FIELD_ACCESS_BIT; | |
457 } | |
458 if (*((int *)JvmtiExport::get_field_modification_count_addr()) == 0) { | |
459 now_enabled &= ~FIELD_MODIFICATION_BIT; | |
460 } | |
461 | |
462 switch (JvmtiEnv::get_phase()) { | |
463 case JVMTI_PHASE_DEAD: | |
464 // no events allowed when dead | |
465 now_enabled = 0; | |
466 break; | |
467 } | |
468 | |
469 // if anything changed do update | |
470 if (now_enabled != was_enabled) { | |
471 | |
472 // will we really send these events to this thread x env | |
473 ets->event_enable()->_event_enabled.set_bits(now_enabled); | |
474 | |
475 // If the enabled status of the single step or breakpoint events changed, | |
476 // the location status may need to change as well. | |
477 jlong changed = now_enabled ^ was_enabled; | |
478 if (changed & SINGLE_STEP_BIT) { | |
479 ets->reset_current_location(JVMTI_EVENT_SINGLE_STEP, (now_enabled & SINGLE_STEP_BIT) != 0); | |
480 } | |
481 if (changed & BREAKPOINT_BIT) { | |
482 ets->reset_current_location(JVMTI_EVENT_BREAKPOINT, (now_enabled & BREAKPOINT_BIT) != 0); | |
483 } | |
484 trace_changed(state, now_enabled, changed); | |
485 } | |
486 return now_enabled; | |
487 } | |
488 | |
489 | |
490 // For the specified thread: compute the currently truly enabled events | |
491 // set external state accordingly. Only thread-filtered events are included. | |
492 jlong | |
493 JvmtiEventControllerPrivate::recompute_thread_enabled(JvmtiThreadState *state) { | |
609
ea20d7ce26b0
6800721: 3/4 JavaThread::jvmti_thread_state() and JvmtiThreadState::state_for() robustness
dcubed
parents:
0
diff
changeset
|
494 if (state == NULL) { |
ea20d7ce26b0
6800721: 3/4 JavaThread::jvmti_thread_state() and JvmtiThreadState::state_for() robustness
dcubed
parents:
0
diff
changeset
|
495 // associated JavaThread is exiting |
ea20d7ce26b0
6800721: 3/4 JavaThread::jvmti_thread_state() and JvmtiThreadState::state_for() robustness
dcubed
parents:
0
diff
changeset
|
496 return (jlong)0; |
ea20d7ce26b0
6800721: 3/4 JavaThread::jvmti_thread_state() and JvmtiThreadState::state_for() robustness
dcubed
parents:
0
diff
changeset
|
497 } |
ea20d7ce26b0
6800721: 3/4 JavaThread::jvmti_thread_state() and JvmtiThreadState::state_for() robustness
dcubed
parents:
0
diff
changeset
|
498 |
0 | 499 jlong was_any_env_enabled = state->thread_event_enable()->_event_enabled.get_bits(); |
500 jlong any_env_enabled = 0; | |
501 | |
502 { | |
503 // This iteration will include JvmtiEnvThreadStates whoses environments | |
504 // have been disposed. These JvmtiEnvThreadStates must not be filtered | |
505 // as recompute must be called on them to disable their events, | |
506 JvmtiEnvThreadStateIterator it(state); | |
507 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { | |
508 any_env_enabled |= recompute_env_thread_enabled(ets, state); | |
509 } | |
510 } | |
511 | |
512 if (any_env_enabled != was_any_env_enabled) { | |
513 // mark if event is truly enabled on this thread in any environment | |
514 state->thread_event_enable()->_event_enabled.set_bits(any_env_enabled); | |
515 | |
516 // compute interp_only mode | |
517 bool should_be_interp = (any_env_enabled & INTERP_EVENT_BITS) != 0; | |
518 bool is_now_interp = state->is_interp_only_mode(); | |
519 | |
520 if (should_be_interp != is_now_interp) { | |
521 if (should_be_interp) { | |
522 enter_interp_only_mode(state); | |
523 } else { | |
524 leave_interp_only_mode(state); | |
525 } | |
526 } | |
1213
6deeaebad47a
6902182: 4/4 Starting with jdwp agent should not incur performance penalty
dcubed
parents:
609
diff
changeset
|
527 |
6deeaebad47a
6902182: 4/4 Starting with jdwp agent should not incur performance penalty
dcubed
parents:
609
diff
changeset
|
528 // update the JavaThread cached value for thread-specific should_post_on_exceptions value |
6deeaebad47a
6902182: 4/4 Starting with jdwp agent should not incur performance penalty
dcubed
parents:
609
diff
changeset
|
529 bool should_post_on_exceptions = (any_env_enabled & SHOULD_POST_ON_EXCEPTIONS_BITS) != 0; |
6deeaebad47a
6902182: 4/4 Starting with jdwp agent should not incur performance penalty
dcubed
parents:
609
diff
changeset
|
530 state->set_should_post_on_exceptions(should_post_on_exceptions); |
0 | 531 } |
1213
6deeaebad47a
6902182: 4/4 Starting with jdwp agent should not incur performance penalty
dcubed
parents:
609
diff
changeset
|
532 |
0 | 533 return any_env_enabled; |
534 } | |
535 | |
536 | |
537 // Compute truly enabled events - meaning if the event can and could be | |
538 // sent. An event is truly enabled if it is user enabled on the thread | |
539 // or globally user enabled, but only if there is a callback or event hook | |
540 // for it and, for field watch and frame pop, one has been set. | |
541 // Compute if truly enabled, per thread, per environment, per combination | |
542 // (thread x environment), and overall. These merges are true if any is true. | |
543 // True per thread if some environment has callback set and the event is globally | |
544 // enabled or enabled for this thread. | |
545 // True per environment if the callback is set and the event is globally | |
546 // enabled in this environment or enabled for any thread in this environment. | |
547 // True per combination if the environment has the callback set and the | |
548 // event is globally enabled in this environment or the event is enabled | |
549 // for this thread and environment. | |
550 // | |
551 // All states transitions dependent on these transitions are also handled here. | |
552 void | |
553 JvmtiEventControllerPrivate::recompute_enabled() { | |
554 assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check"); | |
555 | |
556 // event enabled for any thread in any environment | |
557 jlong was_any_env_thread_enabled = JvmtiEventController::_universal_global_event_enabled.get_bits(); | |
558 jlong any_env_thread_enabled = 0; | |
559 | |
560 EC_TRACE(("JVMTI [-] # recompute enabled - before %llx", was_any_env_thread_enabled)); | |
561 | |
562 // compute non-thread-filters events. | |
563 // This must be done separately from thread-filtered events, since some | |
564 // events can occur before any threads exist. | |
565 JvmtiEnvIterator it; | |
566 for (JvmtiEnvBase* env = it.first(); env != NULL; env = it.next(env)) { | |
567 any_env_thread_enabled |= recompute_env_enabled(env); | |
568 } | |
569 | |
570 // We need to create any missing jvmti_thread_state if there are globally set thread | |
571 // filtered events and there weren't last time | |
572 if ( (any_env_thread_enabled & THREAD_FILTERED_EVENT_BITS) != 0 && | |
573 (was_any_env_thread_enabled & THREAD_FILTERED_EVENT_BITS) == 0) { | |
574 assert(JvmtiEnv::is_vm_live() || (JvmtiEnv::get_phase()==JVMTI_PHASE_START), | |
575 "thread filtered events should not be enabled when VM not in start or live phase"); | |
576 { | |
577 MutexLocker mu(Threads_lock); //hold the Threads_lock for the iteration | |
578 for (JavaThread *tp = Threads::first(); tp != NULL; tp = tp->next()) { | |
609
ea20d7ce26b0
6800721: 3/4 JavaThread::jvmti_thread_state() and JvmtiThreadState::state_for() robustness
dcubed
parents:
0
diff
changeset
|
579 // state_for_while_locked() makes tp->is_exiting() check |
0 | 580 JvmtiThreadState::state_for_while_locked(tp); // create the thread state if missing |
581 } | |
582 }// release Threads_lock | |
583 } | |
584 | |
585 // compute and set thread-filtered events | |
586 for (JvmtiThreadState *state = JvmtiThreadState::first(); state != NULL; state = state->next()) { | |
587 any_env_thread_enabled |= recompute_thread_enabled(state); | |
588 } | |
589 | |
590 // set universal state (across all envs and threads) | |
591 jlong delta = any_env_thread_enabled ^ was_any_env_thread_enabled; | |
592 if (delta != 0) { | |
593 JvmtiExport::set_should_post_field_access((any_env_thread_enabled & FIELD_ACCESS_BIT) != 0); | |
594 JvmtiExport::set_should_post_field_modification((any_env_thread_enabled & FIELD_MODIFICATION_BIT) != 0); | |
595 JvmtiExport::set_should_post_class_load((any_env_thread_enabled & CLASS_LOAD_BIT) != 0); | |
596 JvmtiExport::set_should_post_class_file_load_hook((any_env_thread_enabled & CLASS_FILE_LOAD_HOOK_BIT) != 0); | |
597 JvmtiExport::set_should_post_native_method_bind((any_env_thread_enabled & NATIVE_METHOD_BIND_BIT) != 0); | |
598 JvmtiExport::set_should_post_dynamic_code_generated((any_env_thread_enabled & DYNAMIC_CODE_GENERATED_BIT) != 0); | |
599 JvmtiExport::set_should_post_data_dump((any_env_thread_enabled & DATA_DUMP_BIT) != 0); | |
600 JvmtiExport::set_should_post_class_prepare((any_env_thread_enabled & CLASS_PREPARE_BIT) != 0); | |
601 JvmtiExport::set_should_post_class_unload((any_env_thread_enabled & CLASS_UNLOAD_BIT) != 0); | |
602 JvmtiExport::set_should_post_monitor_contended_enter((any_env_thread_enabled & MONITOR_CONTENDED_ENTER_BIT) != 0); | |
603 JvmtiExport::set_should_post_monitor_contended_entered((any_env_thread_enabled & MONITOR_CONTENDED_ENTERED_BIT) != 0); | |
604 JvmtiExport::set_should_post_monitor_wait((any_env_thread_enabled & MONITOR_WAIT_BIT) != 0); | |
605 JvmtiExport::set_should_post_monitor_waited((any_env_thread_enabled & MONITOR_WAITED_BIT) != 0); | |
606 JvmtiExport::set_should_post_garbage_collection_start((any_env_thread_enabled & GARBAGE_COLLECTION_START_BIT) != 0); | |
607 JvmtiExport::set_should_post_garbage_collection_finish((any_env_thread_enabled & GARBAGE_COLLECTION_FINISH_BIT) != 0); | |
608 JvmtiExport::set_should_post_object_free((any_env_thread_enabled & OBJECT_FREE_BIT) != 0); | |
609 JvmtiExport::set_should_post_resource_exhausted((any_env_thread_enabled & RESOURCE_EXHAUSTED_BIT) != 0); | |
610 JvmtiExport::set_should_post_compiled_method_load((any_env_thread_enabled & COMPILED_METHOD_LOAD_BIT) != 0); | |
611 JvmtiExport::set_should_post_compiled_method_unload((any_env_thread_enabled & COMPILED_METHOD_UNLOAD_BIT) != 0); | |
612 JvmtiExport::set_should_post_vm_object_alloc((any_env_thread_enabled & VM_OBJECT_ALLOC_BIT) != 0); | |
613 | |
614 // need this if we want thread events or we need them to init data | |
615 JvmtiExport::set_should_post_thread_life((any_env_thread_enabled & NEED_THREAD_LIFE_EVENTS) != 0); | |
616 | |
617 // If single stepping is turned on or off, execute the VM op to change it. | |
618 if (delta & SINGLE_STEP_BIT) { | |
619 switch (JvmtiEnv::get_phase()) { | |
620 case JVMTI_PHASE_DEAD: | |
621 // If the VM is dying we can't execute VM ops | |
622 break; | |
623 case JVMTI_PHASE_LIVE: { | |
624 VM_ChangeSingleStep op((any_env_thread_enabled & SINGLE_STEP_BIT) != 0); | |
625 VMThread::execute(&op); | |
626 break; | |
627 } | |
628 default: | |
629 assert(false, "should never come here before live phase"); | |
630 break; | |
631 } | |
632 } | |
633 | |
634 // set global truly enabled, that is, any thread in any environment | |
635 JvmtiEventController::_universal_global_event_enabled.set_bits(any_env_thread_enabled); | |
1213
6deeaebad47a
6902182: 4/4 Starting with jdwp agent should not incur performance penalty
dcubed
parents:
609
diff
changeset
|
636 |
6deeaebad47a
6902182: 4/4 Starting with jdwp agent should not incur performance penalty
dcubed
parents:
609
diff
changeset
|
637 // set global should_post_on_exceptions |
6deeaebad47a
6902182: 4/4 Starting with jdwp agent should not incur performance penalty
dcubed
parents:
609
diff
changeset
|
638 JvmtiExport::set_should_post_on_exceptions((any_env_thread_enabled & SHOULD_POST_ON_EXCEPTIONS_BITS) != 0); |
6deeaebad47a
6902182: 4/4 Starting with jdwp agent should not incur performance penalty
dcubed
parents:
609
diff
changeset
|
639 |
0 | 640 } |
641 | |
642 EC_TRACE(("JVMTI [-] # recompute enabled - after %llx", any_env_thread_enabled)); | |
643 } | |
644 | |
645 | |
646 void | |
647 JvmtiEventControllerPrivate::thread_started(JavaThread *thread) { | |
648 assert(thread->is_Java_thread(), "Must be JavaThread"); | |
649 assert(thread == Thread::current(), "must be current thread"); | |
650 assert(JvmtiEnvBase::environments_might_exist(), "to enter event controller, JVM TI environments must exist"); | |
651 | |
652 EC_TRACE(("JVMTI [%s] # thread started", JvmtiTrace::safe_get_thread_name(thread))); | |
653 | |
654 // if we have any thread filtered events globally enabled, create/update the thread state | |
655 if ((JvmtiEventController::_universal_global_event_enabled.get_bits() & THREAD_FILTERED_EVENT_BITS) != 0) { | |
656 MutexLocker mu(JvmtiThreadState_lock); | |
657 // create the thread state if missing | |
658 JvmtiThreadState *state = JvmtiThreadState::state_for_while_locked(thread); | |
659 if (state != NULL) { // skip threads with no JVMTI thread state | |
660 recompute_thread_enabled(state); | |
661 } | |
662 } | |
663 } | |
664 | |
665 | |
666 void | |
667 JvmtiEventControllerPrivate::thread_ended(JavaThread *thread) { | |
668 // Removes the JvmtiThreadState associated with the specified thread. | |
669 // May be called after all environments have been disposed. | |
2126
db2b0f8c1cef
6814943: getcpool001 catches more than one JvmtiThreadState problem
kamg
parents:
1972
diff
changeset
|
670 assert(JvmtiThreadState_lock->is_locked(), "sanity check"); |
0 | 671 |
672 EC_TRACE(("JVMTI [%s] # thread ended", JvmtiTrace::safe_get_thread_name(thread))); | |
673 | |
674 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
2126
db2b0f8c1cef
6814943: getcpool001 catches more than one JvmtiThreadState problem
kamg
parents:
1972
diff
changeset
|
675 assert(state != NULL, "else why are we here?"); |
db2b0f8c1cef
6814943: getcpool001 catches more than one JvmtiThreadState problem
kamg
parents:
1972
diff
changeset
|
676 delete state; |
0 | 677 } |
678 | |
679 void JvmtiEventControllerPrivate::set_event_callbacks(JvmtiEnvBase *env, | |
680 const jvmtiEventCallbacks* callbacks, | |
681 jint size_of_callbacks) { | |
682 assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check"); | |
683 EC_TRACE(("JVMTI [*] # set event callbacks")); | |
684 | |
685 env->set_event_callbacks(callbacks, size_of_callbacks); | |
686 jlong enabled_bits = 0; | |
687 for (int ei = JVMTI_MIN_EVENT_TYPE_VAL; ei <= JVMTI_MAX_EVENT_TYPE_VAL; ++ei) { | |
688 jvmtiEvent evt_t = (jvmtiEvent)ei; | |
689 if (env->has_callback(evt_t)) { | |
690 enabled_bits |= JvmtiEventEnabled::bit_for(evt_t); | |
691 } | |
692 } | |
693 env->env_event_enable()->_event_callback_enabled.set_bits(enabled_bits); | |
694 recompute_enabled(); | |
695 } | |
696 | |
697 void | |
698 JvmtiEventControllerPrivate::set_extension_event_callback(JvmtiEnvBase *env, | |
699 jint extension_event_index, | |
700 jvmtiExtensionEvent callback) | |
701 { | |
702 assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check"); | |
703 EC_TRACE(("JVMTI [*] # set extension event callback")); | |
704 | |
705 // extension events are allocated below JVMTI_MIN_EVENT_TYPE_VAL | |
706 assert(extension_event_index >= (jint)EXT_MIN_EVENT_TYPE_VAL && | |
707 extension_event_index <= (jint)EXT_MAX_EVENT_TYPE_VAL, "sanity check"); | |
708 | |
709 | |
710 // As the bits for both standard (jvmtiEvent) and extension | |
711 // (jvmtiExtEvents) are stored in the same word we cast here to | |
712 // jvmtiEvent to set/clear the bit for this extension event. | |
713 jvmtiEvent event_type = (jvmtiEvent)extension_event_index; | |
714 | |
715 // Prevent a possible race condition where events are re-enabled by a call to | |
716 // set event callbacks, where the DisposeEnvironment occurs after the boiler-plate | |
717 // environment check and before the lock is acquired. | |
718 // We can safely do the is_valid check now, as JvmtiThreadState_lock is held. | |
719 bool enabling = (callback != NULL) && (env->is_valid()); | |
720 env->env_event_enable()->set_user_enabled(event_type, enabling); | |
721 | |
722 // update the callback | |
723 jvmtiExtEventCallbacks* ext_callbacks = env->ext_callbacks(); | |
724 switch (extension_event_index) { | |
725 case EXT_EVENT_CLASS_UNLOAD : | |
726 ext_callbacks->ClassUnload = callback; | |
727 break; | |
728 default: | |
729 ShouldNotReachHere(); | |
730 } | |
731 | |
732 // update the callback enable/disable bit | |
733 jlong enabled_bits = env->env_event_enable()->_event_callback_enabled.get_bits(); | |
734 jlong bit_for = JvmtiEventEnabled::bit_for(event_type); | |
735 if (enabling) { | |
736 enabled_bits |= bit_for; | |
737 } else { | |
738 enabled_bits &= ~bit_for; | |
739 } | |
740 env->env_event_enable()->_event_callback_enabled.set_bits(enabled_bits); | |
741 | |
742 recompute_enabled(); | |
743 } | |
744 | |
745 | |
746 void | |
747 JvmtiEventControllerPrivate::env_initialize(JvmtiEnvBase *env) { | |
748 assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check"); | |
749 EC_TRACE(("JVMTI [*] # env initialize")); | |
750 | |
751 if (JvmtiEnvBase::is_vm_live()) { | |
752 // if we didn't initialize event info already (this is a late | |
753 // launched environment), do it now. | |
754 event_init(); | |
755 } | |
756 | |
757 env->initialize(); | |
758 | |
759 // add the JvmtiEnvThreadState to each JvmtiThreadState | |
760 for (JvmtiThreadState *state = JvmtiThreadState::first(); state != NULL; state = state->next()) { | |
761 state->add_env(env); | |
762 assert((JvmtiEnv*)(state->env_thread_state(env)->get_env()) == env, "sanity check"); | |
763 } | |
764 JvmtiEventControllerPrivate::recompute_enabled(); | |
765 } | |
766 | |
767 | |
768 void | |
769 JvmtiEventControllerPrivate::env_dispose(JvmtiEnvBase *env) { | |
770 assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check"); | |
771 EC_TRACE(("JVMTI [*] # env dispose")); | |
772 | |
773 // Before the environment is marked disposed, disable all events on this | |
774 // environment (by zapping the callbacks). As a result, the disposed | |
775 // environment will not call event handlers. | |
776 set_event_callbacks(env, NULL, 0); | |
777 for (jint extension_event_index = EXT_MIN_EVENT_TYPE_VAL; | |
778 extension_event_index <= EXT_MAX_EVENT_TYPE_VAL; | |
779 ++extension_event_index) { | |
780 set_extension_event_callback(env, extension_event_index, NULL); | |
781 } | |
782 | |
783 // Let the environment finish disposing itself. | |
784 env->env_dispose(); | |
785 } | |
786 | |
787 | |
788 void | |
789 JvmtiEventControllerPrivate::set_user_enabled(JvmtiEnvBase *env, JavaThread *thread, | |
790 jvmtiEvent event_type, bool enabled) { | |
791 assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check"); | |
792 | |
793 EC_TRACE(("JVMTI [%s] # user %s event %s", | |
794 thread==NULL? "ALL": JvmtiTrace::safe_get_thread_name(thread), | |
795 enabled? "enabled" : "disabled", JvmtiTrace::event_name(event_type))); | |
796 | |
797 if (thread == NULL) { | |
798 env->env_event_enable()->set_user_enabled(event_type, enabled); | |
799 } else { | |
800 // create the thread state (if it didn't exist before) | |
801 JvmtiThreadState *state = JvmtiThreadState::state_for_while_locked(thread); | |
802 if (state != NULL) { | |
803 state->env_thread_state(env)->event_enable()->set_user_enabled(event_type, enabled); | |
804 } | |
805 } | |
806 recompute_enabled(); | |
807 } | |
808 | |
809 | |
810 void | |
811 JvmtiEventControllerPrivate::set_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) { | |
812 EC_TRACE(("JVMTI [%s] # set frame pop - frame=%d", | |
813 JvmtiTrace::safe_get_thread_name(ets->get_thread()), | |
814 fpop.frame_number() )); | |
815 | |
816 ets->get_frame_pops()->set(fpop); | |
817 recompute_thread_enabled(ets->get_thread()->jvmti_thread_state()); | |
818 } | |
819 | |
820 | |
821 void | |
822 JvmtiEventControllerPrivate::clear_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) { | |
823 EC_TRACE(("JVMTI [%s] # clear frame pop - frame=%d", | |
824 JvmtiTrace::safe_get_thread_name(ets->get_thread()), | |
825 fpop.frame_number() )); | |
826 | |
827 ets->get_frame_pops()->clear(fpop); | |
828 recompute_thread_enabled(ets->get_thread()->jvmti_thread_state()); | |
829 } | |
830 | |
831 | |
832 void | |
833 JvmtiEventControllerPrivate::clear_to_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) { | |
834 int cleared_cnt = ets->get_frame_pops()->clear_to(fpop); | |
835 | |
836 EC_TRACE(("JVMTI [%s] # clear to frame pop - frame=%d, count=%d", | |
837 JvmtiTrace::safe_get_thread_name(ets->get_thread()), | |
838 fpop.frame_number(), | |
839 cleared_cnt )); | |
840 | |
841 if (cleared_cnt > 0) { | |
842 recompute_thread_enabled(ets->get_thread()->jvmti_thread_state()); | |
843 } | |
844 } | |
845 | |
846 void | |
847 JvmtiEventControllerPrivate::change_field_watch(jvmtiEvent event_type, bool added) { | |
848 int *count_addr; | |
849 | |
850 switch (event_type) { | |
851 case JVMTI_EVENT_FIELD_MODIFICATION: | |
852 count_addr = (int *)JvmtiExport::get_field_modification_count_addr(); | |
853 break; | |
854 case JVMTI_EVENT_FIELD_ACCESS: | |
855 count_addr = (int *)JvmtiExport::get_field_access_count_addr(); | |
856 break; | |
857 default: | |
858 assert(false, "incorrect event"); | |
859 return; | |
860 } | |
861 | |
862 EC_TRACE(("JVMTI [-] # change field watch - %s %s count=%d", | |
863 event_type==JVMTI_EVENT_FIELD_MODIFICATION? "modification" : "access", | |
864 added? "add" : "remove", | |
865 *count_addr)); | |
866 | |
867 if (added) { | |
868 (*count_addr)++; | |
869 if (*count_addr == 1) { | |
870 recompute_enabled(); | |
871 } | |
872 } else { | |
873 if (*count_addr > 0) { | |
874 (*count_addr)--; | |
875 if (*count_addr == 0) { | |
876 recompute_enabled(); | |
877 } | |
878 } else { | |
879 assert(false, "field watch out of phase"); | |
880 } | |
881 } | |
882 } | |
883 | |
884 void | |
885 JvmtiEventControllerPrivate::event_init() { | |
886 assert(JvmtiThreadState_lock->is_locked(), "sanity check"); | |
887 | |
888 if (_initialized) { | |
889 return; | |
890 } | |
891 | |
892 EC_TRACE(("JVMTI [-] # VM live")); | |
893 | |
894 #ifdef ASSERT | |
895 // check that our idea and the spec's idea of threaded events match | |
896 for (int ei = JVMTI_MIN_EVENT_TYPE_VAL; ei <= JVMTI_MAX_EVENT_TYPE_VAL; ++ei) { | |
897 jlong bit = JvmtiEventEnabled::bit_for((jvmtiEvent)ei); | |
898 assert(((THREAD_FILTERED_EVENT_BITS & bit) != 0) == JvmtiUtil::event_threaded(ei), | |
899 "thread filtered event list does not match"); | |
900 } | |
901 #endif | |
902 | |
903 _initialized = true; | |
904 } | |
905 | |
906 void | |
907 JvmtiEventControllerPrivate::vm_start() { | |
908 // some events are now able to be enabled (phase has changed) | |
909 JvmtiEventControllerPrivate::recompute_enabled(); | |
910 } | |
911 | |
912 | |
913 void | |
914 JvmtiEventControllerPrivate::vm_init() { | |
915 event_init(); | |
916 | |
917 // all the events are now able to be enabled (phase has changed) | |
918 JvmtiEventControllerPrivate::recompute_enabled(); | |
919 } | |
920 | |
921 | |
922 void | |
923 JvmtiEventControllerPrivate::vm_death() { | |
924 // events are disabled (phase has changed) | |
925 JvmtiEventControllerPrivate::recompute_enabled(); | |
926 } | |
927 | |
928 | |
929 /////////////////////////////////////////////////////////////// | |
930 // | |
931 // JvmtiEventController | |
932 // | |
933 | |
934 JvmtiEventEnabled JvmtiEventController::_universal_global_event_enabled; | |
935 | |
936 bool | |
937 JvmtiEventController::is_global_event(jvmtiEvent event_type) { | |
938 assert(is_valid_event_type(event_type), "invalid event type"); | |
939 jlong bit_for = ((jlong)1) << (event_type - TOTAL_MIN_EVENT_TYPE_VAL); | |
940 return((bit_for & GLOBAL_EVENT_BITS)!=0); | |
941 } | |
942 | |
943 void | |
944 JvmtiEventController::set_user_enabled(JvmtiEnvBase *env, JavaThread *thread, jvmtiEvent event_type, bool enabled) { | |
945 if (Threads::number_of_threads() == 0) { | |
946 // during early VM start-up locks don't exist, but we are safely single threaded, | |
947 // call the functionality without holding the JvmtiThreadState_lock. | |
948 JvmtiEventControllerPrivate::set_user_enabled(env, thread, event_type, enabled); | |
949 } else { | |
950 MutexLocker mu(JvmtiThreadState_lock); | |
951 JvmtiEventControllerPrivate::set_user_enabled(env, thread, event_type, enabled); | |
952 } | |
953 } | |
954 | |
955 | |
956 void | |
957 JvmtiEventController::set_event_callbacks(JvmtiEnvBase *env, | |
958 const jvmtiEventCallbacks* callbacks, | |
959 jint size_of_callbacks) { | |
960 if (Threads::number_of_threads() == 0) { | |
961 // during early VM start-up locks don't exist, but we are safely single threaded, | |
962 // call the functionality without holding the JvmtiThreadState_lock. | |
963 JvmtiEventControllerPrivate::set_event_callbacks(env, callbacks, size_of_callbacks); | |
964 } else { | |
965 MutexLocker mu(JvmtiThreadState_lock); | |
966 JvmtiEventControllerPrivate::set_event_callbacks(env, callbacks, size_of_callbacks); | |
967 } | |
968 } | |
969 | |
970 void | |
971 JvmtiEventController::set_extension_event_callback(JvmtiEnvBase *env, | |
972 jint extension_event_index, | |
973 jvmtiExtensionEvent callback) { | |
974 if (Threads::number_of_threads() == 0) { | |
975 JvmtiEventControllerPrivate::set_extension_event_callback(env, extension_event_index, callback); | |
976 } else { | |
977 MutexLocker mu(JvmtiThreadState_lock); | |
978 JvmtiEventControllerPrivate::set_extension_event_callback(env, extension_event_index, callback); | |
979 } | |
980 } | |
981 | |
982 | |
983 | |
984 | |
985 void | |
986 JvmtiEventController::set_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) { | |
987 MutexLocker mu(JvmtiThreadState_lock); | |
988 JvmtiEventControllerPrivate::set_frame_pop(ets, fpop); | |
989 } | |
990 | |
991 | |
992 void | |
993 JvmtiEventController::clear_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) { | |
994 MutexLocker mu(JvmtiThreadState_lock); | |
995 JvmtiEventControllerPrivate::clear_frame_pop(ets, fpop); | |
996 } | |
997 | |
998 | |
999 void | |
1000 JvmtiEventController::clear_to_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) { | |
1001 MutexLocker mu(JvmtiThreadState_lock); | |
1002 JvmtiEventControllerPrivate::clear_to_frame_pop(ets, fpop); | |
1003 } | |
1004 | |
1005 void | |
1006 JvmtiEventController::change_field_watch(jvmtiEvent event_type, bool added) { | |
1007 MutexLocker mu(JvmtiThreadState_lock); | |
1008 JvmtiEventControllerPrivate::change_field_watch(event_type, added); | |
1009 } | |
1010 | |
1011 void | |
1012 JvmtiEventController::thread_started(JavaThread *thread) { | |
1013 // operates only on the current thread | |
1014 // JvmtiThreadState_lock grabbed only if needed. | |
1015 JvmtiEventControllerPrivate::thread_started(thread); | |
1016 } | |
1017 | |
1018 void | |
1019 JvmtiEventController::thread_ended(JavaThread *thread) { | |
1020 // operates only on the current thread | |
1021 // JvmtiThreadState_lock grabbed only if needed. | |
1022 JvmtiEventControllerPrivate::thread_ended(thread); | |
1023 } | |
1024 | |
1025 void | |
1026 JvmtiEventController::env_initialize(JvmtiEnvBase *env) { | |
1027 if (Threads::number_of_threads() == 0) { | |
1028 // during early VM start-up locks don't exist, but we are safely single threaded, | |
1029 // call the functionality without holding the JvmtiThreadState_lock. | |
1030 JvmtiEventControllerPrivate::env_initialize(env); | |
1031 } else { | |
1032 MutexLocker mu(JvmtiThreadState_lock); | |
1033 JvmtiEventControllerPrivate::env_initialize(env); | |
1034 } | |
1035 } | |
1036 | |
1037 void | |
1038 JvmtiEventController::env_dispose(JvmtiEnvBase *env) { | |
1039 if (Threads::number_of_threads() == 0) { | |
1040 // during early VM start-up locks don't exist, but we are safely single threaded, | |
1041 // call the functionality without holding the JvmtiThreadState_lock. | |
1042 JvmtiEventControllerPrivate::env_dispose(env); | |
1043 } else { | |
1044 MutexLocker mu(JvmtiThreadState_lock); | |
1045 JvmtiEventControllerPrivate::env_dispose(env); | |
1046 } | |
1047 } | |
1048 | |
1049 | |
1050 void | |
1051 JvmtiEventController::vm_start() { | |
1052 if (JvmtiEnvBase::environments_might_exist()) { | |
1053 MutexLocker mu(JvmtiThreadState_lock); | |
1054 JvmtiEventControllerPrivate::vm_start(); | |
1055 } | |
1056 } | |
1057 | |
1058 void | |
1059 JvmtiEventController::vm_init() { | |
1060 if (JvmtiEnvBase::environments_might_exist()) { | |
1061 MutexLocker mu(JvmtiThreadState_lock); | |
1062 JvmtiEventControllerPrivate::vm_init(); | |
1063 } | |
1064 } | |
1065 | |
1066 void | |
1067 JvmtiEventController::vm_death() { | |
1068 if (JvmtiEnvBase::environments_might_exist()) { | |
1069 MutexLocker mu(JvmtiThreadState_lock); | |
1070 JvmtiEventControllerPrivate::vm_death(); | |
1071 } | |
1072 } |