Mercurial > hg > truffle
annotate src/share/vm/services/threadService.hpp @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
| author | coleenp |
|---|---|
| date | Sat, 01 Sep 2012 13:25:18 -0400 |
| parents | d2a62e0f25eb |
| children | 0b9ea9a72436 |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
2 * Copyright (c) 2003, 2012, 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:
948
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
948
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:
948
diff
changeset
|
21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_SERVICES_THREADSERVICE_HPP |
| 26 #define SHARE_VM_SERVICES_THREADSERVICE_HPP | |
| 27 | |
| 28 #include "classfile/javaClasses.hpp" | |
| 29 #include "runtime/handles.hpp" | |
| 30 #include "runtime/init.hpp" | |
| 31 #include "runtime/jniHandles.hpp" | |
| 32 #include "runtime/objectMonitor.hpp" | |
| 33 #include "runtime/objectMonitor.inline.hpp" | |
| 34 #include "runtime/perfData.hpp" | |
| 35 #include "services/management.hpp" | |
| 36 #include "services/serviceUtil.hpp" | |
| 37 | |
| 0 | 38 class OopClosure; |
| 39 class ThreadDumpResult; | |
| 40 class ThreadStackTrace; | |
| 41 class ThreadSnapshot; | |
| 42 class StackFrameInfo; | |
| 43 class ThreadConcurrentLocks; | |
| 44 class DeadlockCycle; | |
| 45 | |
| 46 // VM monitoring and management support for the thread and | |
| 47 // synchronization subsystem | |
| 48 // | |
| 49 // Thread contention monitoring is disabled by default. | |
| 50 // When enabled, the VM will begin measuring the accumulated | |
| 51 // elapsed time a thread blocked on synchronization. | |
| 52 // | |
| 53 class ThreadService : public AllStatic { | |
| 54 private: | |
| 55 // These counters could be moved to Threads class | |
| 56 static PerfCounter* _total_threads_count; | |
| 57 static PerfVariable* _live_threads_count; | |
| 58 static PerfVariable* _peak_threads_count; | |
| 59 static PerfVariable* _daemon_threads_count; | |
| 60 | |
| 61 // These 2 counters are atomically incremented once the thread is exiting. | |
| 62 // They will be atomically decremented when ThreadService::remove_thread is called. | |
| 63 static volatile int _exiting_threads_count; | |
| 64 static volatile int _exiting_daemon_threads_count; | |
| 65 | |
| 66 static bool _thread_monitoring_contention_enabled; | |
| 67 static bool _thread_cpu_time_enabled; | |
|
2100
b1a2afa37ec4
7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents:
1972
diff
changeset
|
68 static bool _thread_allocated_memory_enabled; |
| 0 | 69 |
| 70 // Need to keep the list of thread dump result that | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
71 // keep references to Method* since thread dump can be |
| 0 | 72 // requested by multiple threads concurrently. |
| 73 static ThreadDumpResult* _threaddump_list; | |
| 74 | |
| 75 public: | |
| 76 static void init(); | |
| 77 static void add_thread(JavaThread* thread, bool daemon); | |
| 78 static void remove_thread(JavaThread* thread, bool daemon); | |
| 79 static void current_thread_exiting(JavaThread* jt); | |
| 80 | |
| 81 static bool set_thread_monitoring_contention(bool flag); | |
| 82 static bool is_thread_monitoring_contention() { return _thread_monitoring_contention_enabled; } | |
| 83 | |
| 84 static bool set_thread_cpu_time_enabled(bool flag); | |
| 85 static bool is_thread_cpu_time_enabled() { return _thread_cpu_time_enabled; } | |
| 86 | |
|
2100
b1a2afa37ec4
7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents:
1972
diff
changeset
|
87 static bool set_thread_allocated_memory_enabled(bool flag); |
|
b1a2afa37ec4
7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents:
1972
diff
changeset
|
88 static bool is_thread_allocated_memory_enabled() { return _thread_cpu_time_enabled; } |
|
b1a2afa37ec4
7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents:
1972
diff
changeset
|
89 |
| 0 | 90 static jlong get_total_thread_count() { return _total_threads_count->get_value(); } |
| 91 static jlong get_peak_thread_count() { return _peak_threads_count->get_value(); } | |
| 92 static jlong get_live_thread_count() { return _live_threads_count->get_value() - _exiting_threads_count; } | |
| 93 static jlong get_daemon_thread_count() { return _daemon_threads_count->get_value() - _exiting_daemon_threads_count; } | |
| 94 | |
| 95 static int exiting_threads_count() { return _exiting_threads_count; } | |
| 96 static int exiting_daemon_threads_count() { return _exiting_daemon_threads_count; } | |
| 97 | |
| 98 // Support for thread dump | |
| 99 static void add_thread_dump(ThreadDumpResult* dump); | |
| 100 static void remove_thread_dump(ThreadDumpResult* dump); | |
| 101 | |
| 102 static Handle get_current_contended_monitor(JavaThread* thread); | |
| 103 | |
| 104 // This function is called by JVM_DumpThreads. | |
| 105 static Handle dump_stack_traces(GrowableArray<instanceHandle>* threads, | |
| 106 int num_threads, TRAPS); | |
| 107 | |
| 108 static void reset_peak_thread_count(); | |
| 109 static void reset_contention_count_stat(JavaThread* thread); | |
| 110 static void reset_contention_time_stat(JavaThread* thread); | |
| 111 | |
| 112 static DeadlockCycle* find_deadlocks_at_safepoint(bool object_monitors_only); | |
| 113 | |
| 114 // GC support | |
| 115 static void oops_do(OopClosure* f); | |
| 116 }; | |
| 117 | |
| 118 // Per-thread Statistics for synchronization | |
| 6197 | 119 class ThreadStatistics : public CHeapObj<mtInternal> { |
| 0 | 120 private: |
| 121 // The following contention statistics are only updated by | |
| 122 // the thread owning these statistics when contention occurs. | |
| 123 | |
| 124 jlong _contended_enter_count; | |
| 125 elapsedTimer _contended_enter_timer; | |
| 126 jlong _monitor_wait_count; | |
| 127 elapsedTimer _monitor_wait_timer; | |
| 128 jlong _sleep_count; | |
| 129 elapsedTimer _sleep_timer; | |
| 130 | |
| 131 | |
| 132 // These two reset flags are set to true when another thread | |
| 133 // requests to reset the statistics. The actual statistics | |
| 134 // are reset when the thread contention occurs and attempts | |
| 135 // to update the statistics. | |
| 136 bool _count_pending_reset; | |
| 137 bool _timer_pending_reset; | |
| 138 | |
| 139 // Keep accurate times for potentially recursive class operations | |
|
875
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
470
diff
changeset
|
140 int _perf_recursion_counts[6]; |
|
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
470
diff
changeset
|
141 elapsedTimer _perf_timers[6]; |
| 0 | 142 |
| 143 // utility functions | |
| 144 void check_and_reset_count() { | |
| 145 if (!_count_pending_reset) return; | |
| 146 _contended_enter_count = 0; | |
| 147 _monitor_wait_count = 0; | |
| 148 _sleep_count = 0; | |
| 149 _count_pending_reset = 0; | |
| 150 } | |
| 151 void check_and_reset_timer() { | |
| 152 if (!_timer_pending_reset) return; | |
| 153 _contended_enter_timer.reset(); | |
| 154 _monitor_wait_timer.reset(); | |
| 155 _sleep_timer.reset(); | |
| 156 _timer_pending_reset = 0; | |
| 157 } | |
| 158 | |
| 159 public: | |
| 160 ThreadStatistics(); | |
| 161 | |
| 162 jlong contended_enter_count() { return (_count_pending_reset ? 0 : _contended_enter_count); } | |
| 163 jlong contended_enter_ticks() { return (_timer_pending_reset ? 0 : _contended_enter_timer.active_ticks()); } | |
| 164 jlong monitor_wait_count() { return (_count_pending_reset ? 0 : _monitor_wait_count); } | |
| 165 jlong monitor_wait_ticks() { return (_timer_pending_reset ? 0 : _monitor_wait_timer.active_ticks()); } | |
| 166 jlong sleep_count() { return (_count_pending_reset ? 0 : _sleep_count); } | |
| 167 jlong sleep_ticks() { return (_timer_pending_reset ? 0 : _sleep_timer.active_ticks()); } | |
| 168 | |
| 169 void monitor_wait() { check_and_reset_count(); _monitor_wait_count++; } | |
| 170 void monitor_wait_begin() { check_and_reset_timer(); _monitor_wait_timer.start(); } | |
| 171 void monitor_wait_end() { _monitor_wait_timer.stop(); check_and_reset_timer(); } | |
| 172 | |
| 173 void thread_sleep() { check_and_reset_count(); _sleep_count++; } | |
| 174 void thread_sleep_begin() { check_and_reset_timer(); _sleep_timer.start(); } | |
| 175 void thread_sleep_end() { _sleep_timer.stop(); check_and_reset_timer(); } | |
| 176 | |
| 177 void contended_enter() { check_and_reset_count(); _contended_enter_count++; } | |
| 178 void contended_enter_begin() { check_and_reset_timer(); _contended_enter_timer.start(); } | |
| 179 void contended_enter_end() { _contended_enter_timer.stop(); check_and_reset_timer(); } | |
| 180 | |
| 181 void reset_count_stat() { _count_pending_reset = true; } | |
| 182 void reset_time_stat() { _timer_pending_reset = true; } | |
| 183 | |
|
875
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
470
diff
changeset
|
184 int* perf_recursion_counts_addr() { return _perf_recursion_counts; } |
|
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
470
diff
changeset
|
185 elapsedTimer* perf_timers_addr() { return _perf_timers; } |
| 0 | 186 }; |
| 187 | |
| 188 // Thread snapshot to represent the thread state and statistics | |
| 6197 | 189 class ThreadSnapshot : public CHeapObj<mtInternal> { |
| 0 | 190 private: |
| 191 JavaThread* _thread; | |
| 192 oop _threadObj; | |
| 193 java_lang_Thread::ThreadStatus _thread_status; | |
| 194 | |
| 195 bool _is_ext_suspended; | |
| 196 bool _is_in_native; | |
| 197 | |
| 198 jlong _contended_enter_ticks; | |
| 199 jlong _contended_enter_count; | |
| 200 jlong _monitor_wait_ticks; | |
| 201 jlong _monitor_wait_count; | |
| 202 jlong _sleep_ticks; | |
| 203 jlong _sleep_count; | |
| 204 oop _blocker_object; | |
| 205 oop _blocker_object_owner; | |
| 206 | |
| 207 ThreadStackTrace* _stack_trace; | |
| 208 ThreadConcurrentLocks* _concurrent_locks; | |
| 209 ThreadSnapshot* _next; | |
| 210 | |
| 211 public: | |
| 212 // Dummy snapshot | |
| 213 ThreadSnapshot() : _thread(NULL), _threadObj(NULL), _stack_trace(NULL), _concurrent_locks(NULL), _next(NULL), | |
| 214 _blocker_object(NULL), _blocker_object_owner(NULL) {}; | |
| 215 ThreadSnapshot(JavaThread* thread); | |
| 216 ~ThreadSnapshot(); | |
| 217 | |
| 218 java_lang_Thread::ThreadStatus thread_status() { return _thread_status; } | |
| 219 | |
| 220 oop threadObj() const { return _threadObj; } | |
| 221 | |
| 222 void set_next(ThreadSnapshot* n) { _next = n; } | |
| 223 | |
| 224 bool is_ext_suspended() { return _is_ext_suspended; } | |
| 225 bool is_in_native() { return _is_in_native; } | |
| 226 | |
| 227 jlong contended_enter_count() { return _contended_enter_count; } | |
| 228 jlong contended_enter_ticks() { return _contended_enter_ticks; } | |
| 229 jlong monitor_wait_count() { return _monitor_wait_count; } | |
| 230 jlong monitor_wait_ticks() { return _monitor_wait_ticks; } | |
| 231 jlong sleep_count() { return _sleep_count; } | |
| 232 jlong sleep_ticks() { return _sleep_ticks; } | |
| 233 | |
| 234 | |
| 235 oop blocker_object() { return _blocker_object; } | |
| 236 oop blocker_object_owner() { return _blocker_object_owner; } | |
| 237 | |
| 238 ThreadSnapshot* next() const { return _next; } | |
| 239 ThreadStackTrace* get_stack_trace() { return _stack_trace; } | |
| 240 ThreadConcurrentLocks* get_concurrent_locks() { return _concurrent_locks; } | |
| 241 | |
| 242 void dump_stack_at_safepoint(int max_depth, bool with_locked_monitors); | |
| 243 void set_concurrent_locks(ThreadConcurrentLocks* l) { _concurrent_locks = l; } | |
| 244 void oops_do(OopClosure* f); | |
| 245 }; | |
| 246 | |
| 6197 | 247 class ThreadStackTrace : public CHeapObj<mtInternal> { |
| 0 | 248 private: |
| 249 JavaThread* _thread; | |
| 250 int _depth; // number of stack frames added | |
| 251 bool _with_locked_monitors; | |
| 252 GrowableArray<StackFrameInfo*>* _frames; | |
| 253 GrowableArray<oop>* _jni_locked_monitors; | |
| 254 | |
| 255 public: | |
| 256 | |
| 257 ThreadStackTrace(JavaThread* thread, bool with_locked_monitors); | |
| 258 ~ThreadStackTrace(); | |
| 259 | |
|
396
4d05b7cb7842
6306922: Dump dump created by +HeapDumpOnOutOfMemoryError should include stack traces for stack roots
mchung
parents:
0
diff
changeset
|
260 JavaThread* thread() { return _thread; } |
| 0 | 261 StackFrameInfo* stack_frame_at(int i) { return _frames->at(i); } |
| 262 int get_stack_depth() { return _depth; } | |
| 263 | |
| 264 void add_stack_frame(javaVFrame* jvf); | |
| 265 void dump_stack_at_safepoint(int max_depth); | |
| 266 Handle allocate_fill_stack_trace_element_array(TRAPS); | |
| 267 void oops_do(OopClosure* f); | |
| 268 GrowableArray<oop>* jni_locked_monitors() { return _jni_locked_monitors; } | |
| 269 int num_jni_locked_monitors() { return (_jni_locked_monitors != NULL ? _jni_locked_monitors->length() : 0); } | |
| 270 | |
| 271 bool is_owned_monitor_on_stack(oop object); | |
| 272 void add_jni_locked_monitor(oop object) { _jni_locked_monitors->append(object); } | |
| 273 }; | |
| 274 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
275 // StackFrameInfo for keeping Method* and bci during |
| 0 | 276 // stack walking for later construction of StackTraceElement[] |
| 277 // Java instances | |
| 6197 | 278 class StackFrameInfo : public CHeapObj<mtInternal> { |
| 0 | 279 private: |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
280 Method* _method; |
| 0 | 281 int _bci; |
| 282 GrowableArray<oop>* _locked_monitors; // list of object monitors locked by this frame | |
| 283 | |
| 284 public: | |
| 285 | |
| 286 StackFrameInfo(javaVFrame* jvf, bool with_locked_monitors); | |
| 287 ~StackFrameInfo() { | |
| 288 if (_locked_monitors != NULL) { | |
| 289 delete _locked_monitors; | |
| 290 } | |
| 291 }; | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
292 Method* method() const { return _method; } |
| 0 | 293 int bci() const { return _bci; } |
| 294 void oops_do(OopClosure* f); | |
| 295 | |
| 296 int num_locked_monitors() { return (_locked_monitors != NULL ? _locked_monitors->length() : 0); } | |
| 297 GrowableArray<oop>* locked_monitors() { return _locked_monitors; } | |
| 298 | |
| 299 void print_on(outputStream* st) const; | |
| 300 }; | |
| 301 | |
| 6197 | 302 class ThreadConcurrentLocks : public CHeapObj<mtInternal> { |
| 0 | 303 private: |
| 304 GrowableArray<instanceOop>* _owned_locks; | |
| 305 ThreadConcurrentLocks* _next; | |
| 306 JavaThread* _thread; | |
| 307 public: | |
| 308 ThreadConcurrentLocks(JavaThread* thread); | |
| 309 ~ThreadConcurrentLocks(); | |
| 310 | |
| 311 void add_lock(instanceOop o); | |
| 312 void set_next(ThreadConcurrentLocks* n) { _next = n; } | |
| 313 ThreadConcurrentLocks* next() { return _next; } | |
| 314 JavaThread* java_thread() { return _thread; } | |
| 315 GrowableArray<instanceOop>* owned_locks() { return _owned_locks; } | |
| 316 void oops_do(OopClosure* f); | |
| 317 }; | |
| 318 | |
| 319 class ConcurrentLocksDump : public StackObj { | |
| 320 private: | |
| 321 ThreadConcurrentLocks* _map; | |
| 322 ThreadConcurrentLocks* _last; // Last ThreadConcurrentLocks in the map | |
| 323 bool _retain_map_on_free; | |
| 324 | |
| 325 void build_map(GrowableArray<oop>* aos_objects); | |
| 326 void add_lock(JavaThread* thread, instanceOop o); | |
| 327 | |
| 328 public: | |
| 329 ConcurrentLocksDump(bool retain_map_on_free) : _map(NULL), _last(NULL), _retain_map_on_free(retain_map_on_free) {}; | |
| 330 ConcurrentLocksDump() : _map(NULL), _last(NULL), _retain_map_on_free(false) {}; | |
| 331 ~ConcurrentLocksDump(); | |
| 332 | |
| 333 void dump_at_safepoint(); | |
| 334 ThreadConcurrentLocks* thread_concurrent_locks(JavaThread* thread); | |
| 335 void print_locks_on(JavaThread* t, outputStream* st); | |
| 336 }; | |
| 337 | |
| 338 class ThreadDumpResult : public StackObj { | |
| 339 private: | |
| 340 int _num_threads; | |
| 341 int _num_snapshots; | |
| 342 ThreadSnapshot* _snapshots; | |
| 343 ThreadSnapshot* _last; | |
| 344 ThreadDumpResult* _next; | |
| 345 public: | |
| 346 ThreadDumpResult(); | |
| 347 ThreadDumpResult(int num_threads); | |
| 348 ~ThreadDumpResult(); | |
| 349 | |
| 350 void add_thread_snapshot(ThreadSnapshot* ts); | |
| 351 void set_next(ThreadDumpResult* next) { _next = next; } | |
| 352 ThreadDumpResult* next() { return _next; } | |
| 353 int num_threads() { return _num_threads; } | |
| 354 int num_snapshots() { return _num_snapshots; } | |
| 355 ThreadSnapshot* snapshots() { return _snapshots; } | |
| 356 void oops_do(OopClosure* f); | |
| 357 }; | |
| 358 | |
| 6197 | 359 class DeadlockCycle : public CHeapObj<mtInternal> { |
| 0 | 360 private: |
| 361 bool _is_deadlock; | |
| 362 GrowableArray<JavaThread*>* _threads; | |
| 363 DeadlockCycle* _next; | |
| 364 public: | |
| 365 DeadlockCycle(); | |
| 366 ~DeadlockCycle(); | |
| 367 | |
| 368 DeadlockCycle* next() { return _next; } | |
| 369 void set_next(DeadlockCycle* d) { _next = d; } | |
| 370 void add_thread(JavaThread* t) { _threads->append(t); } | |
| 371 void reset() { _is_deadlock = false; _threads->clear(); } | |
| 372 void set_deadlock(bool value) { _is_deadlock = value; } | |
| 373 bool is_deadlock() { return _is_deadlock; } | |
| 374 int num_threads() { return _threads->length(); } | |
| 375 GrowableArray<JavaThread*>* threads() { return _threads; } | |
| 376 void print_on(outputStream* st) const; | |
| 377 }; | |
| 378 | |
| 379 // Utility class to get list of java threads. | |
| 380 class ThreadsListEnumerator : public StackObj { | |
| 381 private: | |
| 382 GrowableArray<instanceHandle>* _threads_array; | |
| 383 public: | |
| 384 ThreadsListEnumerator(Thread* cur_thread, | |
| 385 bool include_jvmti_agent_threads = false, | |
| 386 bool include_jni_attaching_threads = true); | |
| 387 int num_threads() { return _threads_array->length(); } | |
| 388 instanceHandle get_threadObj(int index) { return _threads_array->at(index); } | |
| 389 }; | |
| 390 | |
| 391 | |
| 392 // abstract utility class to set new thread states, and restore previous after the block exits | |
| 393 class JavaThreadStatusChanger : public StackObj { | |
| 394 private: | |
| 395 java_lang_Thread::ThreadStatus _old_state; | |
| 396 JavaThread* _java_thread; | |
| 397 bool _is_alive; | |
| 398 | |
| 399 void save_old_state(JavaThread* java_thread) { | |
| 400 _java_thread = java_thread; | |
| 401 _is_alive = is_alive(java_thread); | |
| 402 if (is_alive()) { | |
| 403 _old_state = java_lang_Thread::get_thread_status(_java_thread->threadObj()); | |
| 404 } | |
| 405 } | |
| 406 | |
| 407 public: | |
| 408 static void set_thread_status(JavaThread* java_thread, | |
| 409 java_lang_Thread::ThreadStatus state) { | |
| 410 java_lang_Thread::set_thread_status(java_thread->threadObj(), state); | |
| 411 } | |
| 412 | |
| 413 void set_thread_status(java_lang_Thread::ThreadStatus state) { | |
| 414 if (is_alive()) { | |
| 415 set_thread_status(_java_thread, state); | |
| 416 } | |
| 417 } | |
| 418 | |
| 419 JavaThreadStatusChanger(JavaThread* java_thread, | |
| 420 java_lang_Thread::ThreadStatus state) { | |
| 421 save_old_state(java_thread); | |
| 422 set_thread_status(state); | |
| 423 } | |
| 424 | |
| 425 JavaThreadStatusChanger(JavaThread* java_thread) { | |
| 426 save_old_state(java_thread); | |
| 427 } | |
| 428 | |
| 429 ~JavaThreadStatusChanger() { | |
| 430 set_thread_status(_old_state); | |
| 431 } | |
| 432 | |
| 433 static bool is_alive(JavaThread* java_thread) { | |
| 434 return java_thread != NULL && java_thread->threadObj() != NULL; | |
| 435 } | |
| 436 | |
| 437 bool is_alive() { | |
| 438 return _is_alive; | |
| 439 } | |
| 440 }; | |
| 441 | |
| 442 // Change status to waiting on an object (timed or indefinite) | |
| 443 class JavaThreadInObjectWaitState : public JavaThreadStatusChanger { | |
| 444 private: | |
| 445 ThreadStatistics* _stat; | |
| 446 bool _active; | |
| 447 | |
| 448 public: | |
| 449 JavaThreadInObjectWaitState(JavaThread *java_thread, bool timed) : | |
| 450 JavaThreadStatusChanger(java_thread, | |
| 451 timed ? java_lang_Thread::IN_OBJECT_WAIT_TIMED : java_lang_Thread::IN_OBJECT_WAIT) { | |
| 452 if (is_alive()) { | |
| 453 _stat = java_thread->get_thread_stat(); | |
| 454 _active = ThreadService::is_thread_monitoring_contention(); | |
| 455 _stat->monitor_wait(); | |
| 456 if (_active) { | |
| 457 _stat->monitor_wait_begin(); | |
| 458 } | |
| 459 } else { | |
| 460 _active = false; | |
| 461 } | |
| 462 } | |
| 463 | |
| 464 ~JavaThreadInObjectWaitState() { | |
| 465 if (_active) { | |
| 466 _stat->monitor_wait_end(); | |
| 467 } | |
| 468 } | |
| 469 }; | |
| 470 | |
| 471 // Change status to parked (timed or indefinite) | |
| 472 class JavaThreadParkedState : public JavaThreadStatusChanger { | |
| 473 private: | |
| 474 ThreadStatistics* _stat; | |
| 475 bool _active; | |
| 476 | |
| 477 public: | |
| 478 JavaThreadParkedState(JavaThread *java_thread, bool timed) : | |
| 479 JavaThreadStatusChanger(java_thread, | |
| 480 timed ? java_lang_Thread::PARKED_TIMED : java_lang_Thread::PARKED) { | |
| 481 if (is_alive()) { | |
| 482 _stat = java_thread->get_thread_stat(); | |
| 483 _active = ThreadService::is_thread_monitoring_contention(); | |
| 484 _stat->monitor_wait(); | |
| 485 if (_active) { | |
| 486 _stat->monitor_wait_begin(); | |
| 487 } | |
| 488 } else { | |
| 489 _active = false; | |
| 490 } | |
| 491 } | |
| 492 | |
| 493 ~JavaThreadParkedState() { | |
| 494 if (_active) { | |
| 495 _stat->monitor_wait_end(); | |
| 496 } | |
| 497 } | |
| 498 }; | |
| 499 | |
| 500 // Change status to blocked on (re-)entering a synchronization block | |
| 501 class JavaThreadBlockedOnMonitorEnterState : public JavaThreadStatusChanger { | |
| 502 private: | |
| 503 ThreadStatistics* _stat; | |
| 504 bool _active; | |
| 505 | |
| 506 static bool contended_enter_begin(JavaThread *java_thread) { | |
| 507 set_thread_status(java_thread, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
| 508 ThreadStatistics* stat = java_thread->get_thread_stat(); | |
| 509 stat->contended_enter(); | |
| 510 bool active = ThreadService::is_thread_monitoring_contention(); | |
| 511 if (active) { | |
| 512 stat->contended_enter_begin(); | |
| 513 } | |
| 514 return active; | |
| 515 } | |
| 516 | |
| 517 public: | |
| 518 // java_thread is waiting thread being blocked on monitor reenter. | |
| 519 // Current thread is the notifying thread which holds the monitor. | |
| 520 static bool wait_reenter_begin(JavaThread *java_thread, ObjectMonitor *obj_m) { | |
| 521 assert((java_thread != NULL), "Java thread should not be null here"); | |
| 522 bool active = false; | |
| 523 if (is_alive(java_thread) && ServiceUtil::visible_oop((oop)obj_m->object())) { | |
| 524 active = contended_enter_begin(java_thread); | |
| 525 } | |
| 526 return active; | |
| 527 } | |
| 528 | |
| 529 static void wait_reenter_end(JavaThread *java_thread, bool active) { | |
| 530 if (active) { | |
| 531 java_thread->get_thread_stat()->contended_enter_end(); | |
| 532 } | |
| 533 set_thread_status(java_thread, java_lang_Thread::RUNNABLE); | |
| 534 } | |
| 535 | |
| 536 JavaThreadBlockedOnMonitorEnterState(JavaThread *java_thread, ObjectMonitor *obj_m) : | |
| 537 JavaThreadStatusChanger(java_thread) { | |
| 538 assert((java_thread != NULL), "Java thread should not be null here"); | |
| 539 // Change thread status and collect contended enter stats for monitor contended | |
| 540 // enter done for external java world objects and it is contended. All other cases | |
| 541 // like for vm internal objects and for external objects which are not contended | |
| 542 // thread status is not changed and contended enter stat is not collected. | |
| 543 _active = false; | |
| 544 if (is_alive() && ServiceUtil::visible_oop((oop)obj_m->object()) && obj_m->contentions() > 0) { | |
| 545 _stat = java_thread->get_thread_stat(); | |
| 546 _active = contended_enter_begin(java_thread); | |
| 547 } | |
| 548 } | |
| 549 | |
| 550 ~JavaThreadBlockedOnMonitorEnterState() { | |
| 551 if (_active) { | |
| 552 _stat->contended_enter_end(); | |
| 553 } | |
| 554 } | |
| 555 }; | |
| 556 | |
| 557 // Change status to sleeping | |
| 558 class JavaThreadSleepState : public JavaThreadStatusChanger { | |
| 559 private: | |
| 560 ThreadStatistics* _stat; | |
| 561 bool _active; | |
| 562 public: | |
| 563 JavaThreadSleepState(JavaThread *java_thread) : | |
| 564 JavaThreadStatusChanger(java_thread, java_lang_Thread::SLEEPING) { | |
| 565 if (is_alive()) { | |
| 566 _stat = java_thread->get_thread_stat(); | |
| 567 _active = ThreadService::is_thread_monitoring_contention(); | |
| 568 _stat->thread_sleep(); | |
| 569 if (_active) { | |
| 570 _stat->thread_sleep_begin(); | |
| 571 } | |
| 572 } else { | |
| 573 _active = false; | |
| 574 } | |
| 575 } | |
| 576 | |
| 577 ~JavaThreadSleepState() { | |
| 578 if (_active) { | |
| 579 _stat->thread_sleep_end(); | |
| 580 } | |
| 581 } | |
| 582 }; | |
| 1972 | 583 |
| 584 #endif // SHARE_VM_SERVICES_THREADSERVICE_HPP |