Mercurial > hg > truffle
annotate src/share/vm/compiler/compileBroker.cpp @ 1300:428a9c451986
6935466: new CodeCache flushing code is not guarded by the flag
Summary: Add missing guard.
Reviewed-by: never
author | kvn |
---|---|
date | Tue, 16 Mar 2010 15:35:33 -0700 |
parents | cef333a48af6 |
children | a2ea687fdc7c |
rev | line source |
---|---|
0 | 1 /* |
1208
cef333a48af6
6923043: failed nightly tests which use -XX:+PrintCompilation -Xcomp -XX:CompileOnly
kvn
parents:
1202
diff
changeset
|
2 * Copyright 1999-2010 Sun Microsystems, Inc. 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 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 #include "incls/_precompiled.incl" | |
26 #include "incls/_compileBroker.cpp.incl" | |
27 | |
28 #ifdef DTRACE_ENABLED | |
29 | |
30 // Only bother with this argument setup if dtrace is available | |
31 | |
32 HS_DTRACE_PROBE_DECL8(hotspot, method__compile__begin, | |
33 char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t); | |
34 HS_DTRACE_PROBE_DECL9(hotspot, method__compile__end, | |
35 char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t, bool); | |
36 | |
37 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method) \ | |
38 { \ | |
39 char* comp_name = (char*)(compiler)->name(); \ | |
40 symbolOop klass_name = (method)->klass_name(); \ | |
41 symbolOop name = (method)->name(); \ | |
42 symbolOop signature = (method)->signature(); \ | |
43 HS_DTRACE_PROBE8(hotspot, method__compile__begin, \ | |
44 comp_name, strlen(comp_name), \ | |
45 klass_name->bytes(), klass_name->utf8_length(), \ | |
46 name->bytes(), name->utf8_length(), \ | |
47 signature->bytes(), signature->utf8_length()); \ | |
48 } | |
49 | |
50 #define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, success) \ | |
51 { \ | |
52 char* comp_name = (char*)(compiler)->name(); \ | |
53 symbolOop klass_name = (method)->klass_name(); \ | |
54 symbolOop name = (method)->name(); \ | |
55 symbolOop signature = (method)->signature(); \ | |
56 HS_DTRACE_PROBE9(hotspot, method__compile__end, \ | |
57 comp_name, strlen(comp_name), \ | |
58 klass_name->bytes(), klass_name->utf8_length(), \ | |
59 name->bytes(), name->utf8_length(), \ | |
60 signature->bytes(), signature->utf8_length(), (success)); \ | |
61 } | |
62 | |
63 #else // ndef DTRACE_ENABLED | |
64 | |
65 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method) | |
66 #define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, success) | |
67 | |
68 #endif // ndef DTRACE_ENABLED | |
69 | |
70 bool CompileBroker::_initialized = false; | |
71 volatile bool CompileBroker::_should_block = false; | |
1202 | 72 volatile jint CompileBroker::_should_compile_new_jobs = run_compilation; |
0 | 73 |
74 // The installed compiler(s) | |
75 AbstractCompiler* CompileBroker::_compilers[2]; | |
76 | |
77 // These counters are used for assigning id's to each compilation | |
78 uint CompileBroker::_compilation_id = 0; | |
79 uint CompileBroker::_osr_compilation_id = 0; | |
80 | |
81 // Debugging information | |
82 int CompileBroker::_last_compile_type = no_compile; | |
83 int CompileBroker::_last_compile_level = CompLevel_none; | |
84 char CompileBroker::_last_method_compiled[CompileBroker::name_buffer_length]; | |
85 | |
86 // Performance counters | |
87 PerfCounter* CompileBroker::_perf_total_compilation = NULL; | |
88 PerfCounter* CompileBroker::_perf_osr_compilation = NULL; | |
89 PerfCounter* CompileBroker::_perf_standard_compilation = NULL; | |
90 | |
91 PerfCounter* CompileBroker::_perf_total_bailout_count = NULL; | |
92 PerfCounter* CompileBroker::_perf_total_invalidated_count = NULL; | |
93 PerfCounter* CompileBroker::_perf_total_compile_count = NULL; | |
94 PerfCounter* CompileBroker::_perf_total_osr_compile_count = NULL; | |
95 PerfCounter* CompileBroker::_perf_total_standard_compile_count = NULL; | |
96 | |
97 PerfCounter* CompileBroker::_perf_sum_osr_bytes_compiled = NULL; | |
98 PerfCounter* CompileBroker::_perf_sum_standard_bytes_compiled = NULL; | |
99 PerfCounter* CompileBroker::_perf_sum_nmethod_size = NULL; | |
100 PerfCounter* CompileBroker::_perf_sum_nmethod_code_size = NULL; | |
101 | |
102 PerfStringVariable* CompileBroker::_perf_last_method = NULL; | |
103 PerfStringVariable* CompileBroker::_perf_last_failed_method = NULL; | |
104 PerfStringVariable* CompileBroker::_perf_last_invalidated_method = NULL; | |
105 PerfVariable* CompileBroker::_perf_last_compile_type = NULL; | |
106 PerfVariable* CompileBroker::_perf_last_compile_size = NULL; | |
107 PerfVariable* CompileBroker::_perf_last_failed_type = NULL; | |
108 PerfVariable* CompileBroker::_perf_last_invalidated_type = NULL; | |
109 | |
110 // Timers and counters for generating statistics | |
111 elapsedTimer CompileBroker::_t_total_compilation; | |
112 elapsedTimer CompileBroker::_t_osr_compilation; | |
113 elapsedTimer CompileBroker::_t_standard_compilation; | |
114 | |
115 int CompileBroker::_total_bailout_count = 0; | |
116 int CompileBroker::_total_invalidated_count = 0; | |
117 int CompileBroker::_total_compile_count = 0; | |
118 int CompileBroker::_total_osr_compile_count = 0; | |
119 int CompileBroker::_total_standard_compile_count = 0; | |
120 | |
121 int CompileBroker::_sum_osr_bytes_compiled = 0; | |
122 int CompileBroker::_sum_standard_bytes_compiled = 0; | |
123 int CompileBroker::_sum_nmethod_size = 0; | |
124 int CompileBroker::_sum_nmethod_code_size = 0; | |
125 | |
126 CompileQueue* CompileBroker::_method_queue = NULL; | |
127 CompileTask* CompileBroker::_task_free_list = NULL; | |
128 | |
129 GrowableArray<CompilerThread*>* CompileBroker::_method_threads = NULL; | |
130 | |
131 // CompileTaskWrapper | |
132 // | |
133 // Assign this task to the current thread. Deallocate the task | |
134 // when the compilation is complete. | |
135 class CompileTaskWrapper : StackObj { | |
136 public: | |
137 CompileTaskWrapper(CompileTask* task); | |
138 ~CompileTaskWrapper(); | |
139 }; | |
140 | |
141 CompileTaskWrapper::CompileTaskWrapper(CompileTask* task) { | |
142 CompilerThread* thread = CompilerThread::current(); | |
143 thread->set_task(task); | |
144 CompileLog* log = thread->log(); | |
145 if (log != NULL) task->log_task_start(log); | |
146 } | |
147 | |
148 CompileTaskWrapper::~CompileTaskWrapper() { | |
149 CompilerThread* thread = CompilerThread::current(); | |
150 CompileTask* task = thread->task(); | |
151 CompileLog* log = thread->log(); | |
152 if (log != NULL) task->log_task_done(log); | |
153 thread->set_task(NULL); | |
154 task->set_code_handle(NULL); | |
155 DEBUG_ONLY(thread->set_env((ciEnv*)badAddress)); | |
156 if (task->is_blocking()) { | |
157 MutexLocker notifier(task->lock(), thread); | |
158 task->mark_complete(); | |
159 // Notify the waiting thread that the compilation has completed. | |
160 task->lock()->notify_all(); | |
161 } else { | |
162 task->mark_complete(); | |
163 | |
164 // By convention, the compiling thread is responsible for | |
165 // recycling a non-blocking CompileTask. | |
166 CompileBroker::free_task(task); | |
167 } | |
168 } | |
169 | |
170 | |
171 // ------------------------------------------------------------------ | |
172 // CompileTask::initialize | |
173 void CompileTask::initialize(int compile_id, | |
174 methodHandle method, | |
175 int osr_bci, | |
176 int comp_level, | |
177 methodHandle hot_method, | |
178 int hot_count, | |
179 const char* comment, | |
180 bool is_blocking) { | |
181 assert(!_lock->is_locked(), "bad locking"); | |
182 | |
183 _compile_id = compile_id; | |
184 _method = JNIHandles::make_global(method); | |
185 _osr_bci = osr_bci; | |
186 _is_blocking = is_blocking; | |
187 _comp_level = comp_level; | |
188 _num_inlined_bytecodes = 0; | |
189 | |
190 _is_complete = false; | |
191 _is_success = false; | |
192 _code_handle = NULL; | |
193 | |
194 _hot_method = NULL; | |
195 _hot_count = hot_count; | |
196 _time_queued = 0; // tidy | |
197 _comment = comment; | |
198 | |
199 if (LogCompilation) { | |
200 _time_queued = os::elapsed_counter(); | |
201 if (hot_method.not_null()) { | |
202 if (hot_method == method) { | |
203 _hot_method = _method; | |
204 } else { | |
205 _hot_method = JNIHandles::make_global(hot_method); | |
206 } | |
207 } | |
208 } | |
209 | |
210 _next = NULL; | |
211 } | |
212 | |
213 // ------------------------------------------------------------------ | |
214 // CompileTask::code/set_code | |
215 nmethod* CompileTask::code() const { | |
216 if (_code_handle == NULL) return NULL; | |
217 return _code_handle->code(); | |
218 } | |
219 void CompileTask::set_code(nmethod* nm) { | |
220 if (_code_handle == NULL && nm == NULL) return; | |
221 guarantee(_code_handle != NULL, ""); | |
222 _code_handle->set_code(nm); | |
223 if (nm == NULL) _code_handle = NULL; // drop the handle also | |
224 } | |
225 | |
226 // ------------------------------------------------------------------ | |
227 // CompileTask::free | |
228 void CompileTask::free() { | |
229 set_code(NULL); | |
230 assert(!_lock->is_locked(), "Should not be locked when freed"); | |
231 if (_hot_method != NULL && _hot_method != _method) { | |
232 JNIHandles::destroy_global(_hot_method); | |
233 } | |
234 JNIHandles::destroy_global(_method); | |
235 } | |
236 | |
237 | |
238 // ------------------------------------------------------------------ | |
239 // CompileTask::print | |
240 void CompileTask::print() { | |
241 tty->print("<CompileTask compile_id=%d ", _compile_id); | |
242 tty->print("method="); | |
243 ((methodOop)JNIHandles::resolve(_method))->print_name(tty); | |
244 tty->print_cr(" osr_bci=%d is_blocking=%s is_complete=%s is_success=%s>", | |
245 _osr_bci, bool_to_str(_is_blocking), | |
246 bool_to_str(_is_complete), bool_to_str(_is_success)); | |
247 } | |
248 | |
249 // ------------------------------------------------------------------ | |
250 // CompileTask::print_line_on_error | |
251 // | |
252 // This function is called by fatal error handler when the thread | |
253 // causing troubles is a compiler thread. | |
254 // | |
255 // Do not grab any lock, do not allocate memory. | |
256 // | |
257 // Otherwise it's the same as CompileTask::print_line() | |
258 // | |
259 void CompileTask::print_line_on_error(outputStream* st, char* buf, int buflen) { | |
260 methodOop method = (methodOop)JNIHandles::resolve(_method); | |
261 | |
262 // print compiler name | |
263 st->print("%s:", CompileBroker::compiler(comp_level())->name()); | |
264 | |
265 // print compilation number | |
266 st->print("%3d", compile_id()); | |
267 | |
268 // print method attributes | |
269 const bool is_osr = osr_bci() != CompileBroker::standard_entry_bci; | |
270 { const char blocking_char = is_blocking() ? 'b' : ' '; | |
271 const char compile_type = is_osr ? '%' : ' '; | |
272 const char sync_char = method->is_synchronized() ? 's' : ' '; | |
273 const char exception_char = method->has_exception_handler() ? '!' : ' '; | |
274 const char tier_char = | |
275 is_highest_tier_compile(comp_level()) ? ' ' : ('0' + comp_level()); | |
276 st->print("%c%c%c%c%c ", compile_type, sync_char, exception_char, blocking_char, tier_char); | |
277 } | |
278 | |
279 // Use buf to get method name and signature | |
280 if (method != NULL) st->print("%s", method->name_and_sig_as_C_string(buf, buflen)); | |
281 | |
282 // print osr_bci if any | |
283 if (is_osr) st->print(" @ %d", osr_bci()); | |
284 | |
285 // print method size | |
286 st->print_cr(" (%d bytes)", method->code_size()); | |
287 } | |
288 | |
289 // ------------------------------------------------------------------ | |
290 // CompileTask::print_line | |
291 void CompileTask::print_line() { | |
292 Thread *thread = Thread::current(); | |
293 methodHandle method(thread, | |
294 (methodOop)JNIHandles::resolve(method_handle())); | |
295 ResourceMark rm(thread); | |
296 | |
297 ttyLocker ttyl; // keep the following output all in one block | |
298 | |
299 // print compiler name if requested | |
300 if (CIPrintCompilerName) tty->print("%s:", CompileBroker::compiler(comp_level())->name()); | |
301 | |
302 // print compilation number | |
303 tty->print("%3d", compile_id()); | |
304 | |
305 // print method attributes | |
306 const bool is_osr = osr_bci() != CompileBroker::standard_entry_bci; | |
307 { const char blocking_char = is_blocking() ? 'b' : ' '; | |
308 const char compile_type = is_osr ? '%' : ' '; | |
309 const char sync_char = method->is_synchronized() ? 's' : ' '; | |
310 const char exception_char = method->has_exception_handler() ? '!' : ' '; | |
311 const char tier_char = | |
312 is_highest_tier_compile(comp_level()) ? ' ' : ('0' + comp_level()); | |
313 tty->print("%c%c%c%c%c ", compile_type, sync_char, exception_char, blocking_char, tier_char); | |
314 } | |
315 | |
316 // print method name | |
317 method->print_short_name(tty); | |
318 | |
319 // print osr_bci if any | |
320 if (is_osr) tty->print(" @ %d", osr_bci()); | |
321 | |
322 // print method size | |
323 tty->print_cr(" (%d bytes)", method->code_size()); | |
324 } | |
325 | |
326 | |
327 // ------------------------------------------------------------------ | |
328 // CompileTask::log_task | |
329 void CompileTask::log_task(xmlStream* log) { | |
330 Thread* thread = Thread::current(); | |
331 methodHandle method(thread, | |
332 (methodOop)JNIHandles::resolve(method_handle())); | |
333 ResourceMark rm(thread); | |
334 | |
335 // <task id='9' method='M' osr_bci='X' level='1' blocking='1' stamp='1.234'> | |
336 if (_compile_id != 0) log->print(" compile_id='%d'", _compile_id); | |
337 if (_osr_bci != CompileBroker::standard_entry_bci) { | |
338 log->print(" compile_kind='osr'"); // same as nmethod::compile_kind | |
339 } // else compile_kind='c2c' | |
340 if (!method.is_null()) log->method(method); | |
341 if (_osr_bci != CompileBroker::standard_entry_bci) { | |
342 log->print(" osr_bci='%d'", _osr_bci); | |
343 } | |
344 if (_comp_level != CompLevel_highest_tier) { | |
345 log->print(" level='%d'", _comp_level); | |
346 } | |
347 if (_is_blocking) { | |
348 log->print(" blocking='1'"); | |
349 } | |
350 log->stamp(); | |
351 } | |
352 | |
353 | |
354 // ------------------------------------------------------------------ | |
355 // CompileTask::log_task_queued | |
356 void CompileTask::log_task_queued() { | |
357 Thread* thread = Thread::current(); | |
358 ttyLocker ttyl; | |
359 ResourceMark rm(thread); | |
360 | |
361 xtty->begin_elem("task_queued"); | |
362 log_task(xtty); | |
363 if (_comment != NULL) { | |
364 xtty->print(" comment='%s'", _comment); | |
365 } | |
366 if (_hot_method != NULL) { | |
367 methodHandle hot(thread, | |
368 (methodOop)JNIHandles::resolve(_hot_method)); | |
369 methodHandle method(thread, | |
370 (methodOop)JNIHandles::resolve(_method)); | |
371 if (hot() != method()) { | |
372 xtty->method(hot); | |
373 } | |
374 } | |
375 if (_hot_count != 0) { | |
376 xtty->print(" hot_count='%d'", _hot_count); | |
377 } | |
378 xtty->end_elem(); | |
379 } | |
380 | |
381 | |
382 // ------------------------------------------------------------------ | |
383 // CompileTask::log_task_start | |
384 void CompileTask::log_task_start(CompileLog* log) { | |
385 log->begin_head("task"); | |
386 log_task(log); | |
387 log->end_head(); | |
388 } | |
389 | |
390 | |
391 // ------------------------------------------------------------------ | |
392 // CompileTask::log_task_done | |
393 void CompileTask::log_task_done(CompileLog* log) { | |
394 Thread* thread = Thread::current(); | |
395 methodHandle method(thread, | |
396 (methodOop)JNIHandles::resolve(method_handle())); | |
397 ResourceMark rm(thread); | |
398 | |
399 // <task_done ... stamp='1.234'> </task> | |
400 nmethod* nm = code(); | |
401 log->begin_elem("task_done success='%d' nmsize='%d' count='%d'", | |
402 _is_success, nm == NULL ? 0 : nm->instructions_size(), | |
403 method->invocation_count()); | |
404 int bec = method->backedge_count(); | |
405 if (bec != 0) log->print(" backedge_count='%d'", bec); | |
406 // Note: "_is_complete" is about to be set, but is not. | |
407 if (_num_inlined_bytecodes != 0) { | |
408 log->print(" inlined_bytes='%d'", _num_inlined_bytecodes); | |
409 } | |
410 log->stamp(); | |
411 log->end_elem(); | |
412 log->tail("task"); | |
413 log->clear_identities(); // next task will have different CI | |
414 if (log->unflushed_count() > 2000) { | |
415 log->flush(); | |
416 } | |
417 log->mark_file_end(); | |
418 } | |
419 | |
420 | |
421 | |
422 // ------------------------------------------------------------------ | |
423 // CompileQueue::add | |
424 // | |
425 // Add a CompileTask to a CompileQueue | |
426 void CompileQueue::add(CompileTask* task) { | |
427 assert(lock()->owned_by_self(), "must own lock"); | |
428 | |
429 task->set_next(NULL); | |
430 | |
431 if (_last == NULL) { | |
432 // The compile queue is empty. | |
433 assert(_first == NULL, "queue is empty"); | |
434 _first = task; | |
435 _last = task; | |
436 } else { | |
437 // Append the task to the queue. | |
438 assert(_last->next() == NULL, "not last"); | |
439 _last->set_next(task); | |
440 _last = task; | |
441 } | |
442 | |
443 // Mark the method as being in the compile queue. | |
444 ((methodOop)JNIHandles::resolve(task->method_handle()))->set_queued_for_compilation(); | |
445 | |
446 if (CIPrintCompileQueue) { | |
447 print(); | |
448 } | |
449 | |
450 if (LogCompilation && xtty != NULL) { | |
451 task->log_task_queued(); | |
452 } | |
453 | |
454 // Notify CompilerThreads that a task is available. | |
455 lock()->notify(); | |
456 } | |
457 | |
458 | |
459 // ------------------------------------------------------------------ | |
460 // CompileQueue::get | |
461 // | |
462 // Get the next CompileTask from a CompileQueue | |
463 CompileTask* CompileQueue::get() { | |
464 MutexLocker locker(lock()); | |
465 | |
466 // Wait for an available CompileTask. | |
467 while (_first == NULL) { | |
468 // There is no work to be done right now. Wait. | |
469 lock()->wait(); | |
470 } | |
471 | |
472 CompileTask* task = _first; | |
473 | |
474 // Update queue first and last | |
475 _first =_first->next(); | |
476 if (_first == NULL) { | |
477 _last = NULL; | |
478 } | |
479 | |
480 return task; | |
481 | |
482 } | |
483 | |
484 | |
485 // ------------------------------------------------------------------ | |
486 // CompileQueue::print | |
487 void CompileQueue::print() { | |
488 tty->print_cr("Contents of %s", name()); | |
489 tty->print_cr("----------------------"); | |
490 CompileTask* task = _first; | |
491 while (task != NULL) { | |
492 task->print_line(); | |
493 task = task->next(); | |
494 } | |
495 tty->print_cr("----------------------"); | |
496 } | |
497 | |
498 CompilerCounters::CompilerCounters(const char* thread_name, int instance, TRAPS) { | |
499 | |
500 _current_method[0] = '\0'; | |
501 _compile_type = CompileBroker::no_compile; | |
502 | |
503 if (UsePerfData) { | |
504 ResourceMark rm; | |
505 | |
506 // create the thread instance name space string - don't create an | |
507 // instance subspace if instance is -1 - keeps the adapterThread | |
508 // counters from having a ".0" namespace. | |
509 const char* thread_i = (instance == -1) ? thread_name : | |
510 PerfDataManager::name_space(thread_name, instance); | |
511 | |
512 | |
513 char* name = PerfDataManager::counter_name(thread_i, "method"); | |
514 _perf_current_method = | |
515 PerfDataManager::create_string_variable(SUN_CI, name, | |
516 cmname_buffer_length, | |
517 _current_method, CHECK); | |
518 | |
519 name = PerfDataManager::counter_name(thread_i, "type"); | |
520 _perf_compile_type = PerfDataManager::create_variable(SUN_CI, name, | |
521 PerfData::U_None, | |
522 (jlong)_compile_type, | |
523 CHECK); | |
524 | |
525 name = PerfDataManager::counter_name(thread_i, "time"); | |
526 _perf_time = PerfDataManager::create_counter(SUN_CI, name, | |
527 PerfData::U_Ticks, CHECK); | |
528 | |
529 name = PerfDataManager::counter_name(thread_i, "compiles"); | |
530 _perf_compiles = PerfDataManager::create_counter(SUN_CI, name, | |
531 PerfData::U_Events, CHECK); | |
532 } | |
533 } | |
534 | |
535 | |
536 // ------------------------------------------------------------------ | |
537 // CompileBroker::compilation_init | |
538 // | |
539 // Initialize the Compilation object | |
540 void CompileBroker::compilation_init() { | |
541 _last_method_compiled[0] = '\0'; | |
542 | |
543 // Set the interface to the current compiler(s). | |
544 #ifdef COMPILER1 | |
545 _compilers[0] = new Compiler(); | |
546 #ifndef COMPILER2 | |
547 _compilers[1] = _compilers[0]; | |
548 #endif | |
549 #endif // COMPILER1 | |
550 | |
551 #ifdef COMPILER2 | |
552 _compilers[1] = new C2Compiler(); | |
553 #ifndef COMPILER1 | |
554 _compilers[0] = _compilers[1]; | |
555 #endif | |
556 #endif // COMPILER2 | |
557 | |
558 // Initialize the CompileTask free list | |
559 _task_free_list = NULL; | |
560 | |
561 // Start the CompilerThreads | |
562 init_compiler_threads(compiler_count()); | |
563 | |
564 | |
565 // totalTime performance counter is always created as it is required | |
566 // by the implementation of java.lang.management.CompilationMBean. | |
567 { | |
568 EXCEPTION_MARK; | |
569 _perf_total_compilation = | |
570 PerfDataManager::create_counter(JAVA_CI, "totalTime", | |
571 PerfData::U_Ticks, CHECK); | |
572 } | |
573 | |
574 | |
575 if (UsePerfData) { | |
576 | |
577 EXCEPTION_MARK; | |
578 | |
579 // create the jvmstat performance counters | |
580 _perf_osr_compilation = | |
581 PerfDataManager::create_counter(SUN_CI, "osrTime", | |
582 PerfData::U_Ticks, CHECK); | |
583 | |
584 _perf_standard_compilation = | |
585 PerfDataManager::create_counter(SUN_CI, "standardTime", | |
586 PerfData::U_Ticks, CHECK); | |
587 | |
588 _perf_total_bailout_count = | |
589 PerfDataManager::create_counter(SUN_CI, "totalBailouts", | |
590 PerfData::U_Events, CHECK); | |
591 | |
592 _perf_total_invalidated_count = | |
593 PerfDataManager::create_counter(SUN_CI, "totalInvalidates", | |
594 PerfData::U_Events, CHECK); | |
595 | |
596 _perf_total_compile_count = | |
597 PerfDataManager::create_counter(SUN_CI, "totalCompiles", | |
598 PerfData::U_Events, CHECK); | |
599 _perf_total_osr_compile_count = | |
600 PerfDataManager::create_counter(SUN_CI, "osrCompiles", | |
601 PerfData::U_Events, CHECK); | |
602 | |
603 _perf_total_standard_compile_count = | |
604 PerfDataManager::create_counter(SUN_CI, "standardCompiles", | |
605 PerfData::U_Events, CHECK); | |
606 | |
607 _perf_sum_osr_bytes_compiled = | |
608 PerfDataManager::create_counter(SUN_CI, "osrBytes", | |
609 PerfData::U_Bytes, CHECK); | |
610 | |
611 _perf_sum_standard_bytes_compiled = | |
612 PerfDataManager::create_counter(SUN_CI, "standardBytes", | |
613 PerfData::U_Bytes, CHECK); | |
614 | |
615 _perf_sum_nmethod_size = | |
616 PerfDataManager::create_counter(SUN_CI, "nmethodSize", | |
617 PerfData::U_Bytes, CHECK); | |
618 | |
619 _perf_sum_nmethod_code_size = | |
620 PerfDataManager::create_counter(SUN_CI, "nmethodCodeSize", | |
621 PerfData::U_Bytes, CHECK); | |
622 | |
623 _perf_last_method = | |
624 PerfDataManager::create_string_variable(SUN_CI, "lastMethod", | |
625 CompilerCounters::cmname_buffer_length, | |
626 "", CHECK); | |
627 | |
628 _perf_last_failed_method = | |
629 PerfDataManager::create_string_variable(SUN_CI, "lastFailedMethod", | |
630 CompilerCounters::cmname_buffer_length, | |
631 "", CHECK); | |
632 | |
633 _perf_last_invalidated_method = | |
634 PerfDataManager::create_string_variable(SUN_CI, "lastInvalidatedMethod", | |
635 CompilerCounters::cmname_buffer_length, | |
636 "", CHECK); | |
637 | |
638 _perf_last_compile_type = | |
639 PerfDataManager::create_variable(SUN_CI, "lastType", | |
640 PerfData::U_None, | |
641 (jlong)CompileBroker::no_compile, | |
642 CHECK); | |
643 | |
644 _perf_last_compile_size = | |
645 PerfDataManager::create_variable(SUN_CI, "lastSize", | |
646 PerfData::U_Bytes, | |
647 (jlong)CompileBroker::no_compile, | |
648 CHECK); | |
649 | |
650 | |
651 _perf_last_failed_type = | |
652 PerfDataManager::create_variable(SUN_CI, "lastFailedType", | |
653 PerfData::U_None, | |
654 (jlong)CompileBroker::no_compile, | |
655 CHECK); | |
656 | |
657 _perf_last_invalidated_type = | |
658 PerfDataManager::create_variable(SUN_CI, "lastInvalidatedType", | |
659 PerfData::U_None, | |
660 (jlong)CompileBroker::no_compile, | |
661 CHECK); | |
662 } | |
663 | |
664 _initialized = true; | |
665 } | |
666 | |
667 | |
668 | |
669 // ------------------------------------------------------------------ | |
670 // CompileBroker::make_compiler_thread | |
671 CompilerThread* CompileBroker::make_compiler_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, TRAPS) { | |
672 CompilerThread* compiler_thread = NULL; | |
673 | |
674 klassOop k = | |
675 SystemDictionary::resolve_or_fail(vmSymbolHandles::java_lang_Thread(), | |
676 true, CHECK_0); | |
677 instanceKlassHandle klass (THREAD, k); | |
678 instanceHandle thread_oop = klass->allocate_instance_handle(CHECK_0); | |
679 Handle string = java_lang_String::create_from_str(name, CHECK_0); | |
680 | |
681 // Initialize thread_oop to put it into the system threadGroup | |
682 Handle thread_group (THREAD, Universe::system_thread_group()); | |
683 JavaValue result(T_VOID); | |
684 JavaCalls::call_special(&result, thread_oop, | |
685 klass, | |
686 vmSymbolHandles::object_initializer_name(), | |
687 vmSymbolHandles::threadgroup_string_void_signature(), | |
688 thread_group, | |
689 string, | |
690 CHECK_0); | |
691 | |
692 { | |
693 MutexLocker mu(Threads_lock, THREAD); | |
694 compiler_thread = new CompilerThread(queue, counters); | |
695 // At this point the new CompilerThread data-races with this startup | |
696 // thread (which I believe is the primoridal thread and NOT the VM | |
697 // thread). This means Java bytecodes being executed at startup can | |
698 // queue compile jobs which will run at whatever default priority the | |
699 // newly created CompilerThread runs at. | |
700 | |
701 | |
702 // At this point it may be possible that no osthread was created for the | |
703 // JavaThread due to lack of memory. We would have to throw an exception | |
704 // in that case. However, since this must work and we do not allow | |
705 // exceptions anyway, check and abort if this fails. | |
706 | |
707 if (compiler_thread == NULL || compiler_thread->osthread() == NULL){ | |
708 vm_exit_during_initialization("java.lang.OutOfMemoryError", | |
709 "unable to create new native thread"); | |
710 } | |
711 | |
712 java_lang_Thread::set_thread(thread_oop(), compiler_thread); | |
713 | |
714 // Note that this only sets the JavaThread _priority field, which by | |
715 // definition is limited to Java priorities and not OS priorities. | |
716 // The os-priority is set in the CompilerThread startup code itself | |
717 java_lang_Thread::set_priority(thread_oop(), NearMaxPriority); | |
718 // CLEANUP PRIORITIES: This -if- statement hids a bug whereby the compiler | |
719 // threads never have their OS priority set. The assumption here is to | |
720 // enable the Performance group to do flag tuning, figure out a suitable | |
721 // CompilerThreadPriority, and then remove this 'if' statement (and | |
722 // comment) and unconditionally set the priority. | |
723 | |
724 // Compiler Threads should be at the highest Priority | |
725 if ( CompilerThreadPriority != -1 ) | |
726 os::set_native_priority( compiler_thread, CompilerThreadPriority ); | |
727 else | |
728 os::set_native_priority( compiler_thread, os::java_to_os_priority[NearMaxPriority]); | |
729 | |
730 // Note that I cannot call os::set_priority because it expects Java | |
731 // priorities and I am *explicitly* using OS priorities so that it's | |
732 // possible to set the compiler thread priority higher than any Java | |
733 // thread. | |
734 | |
735 java_lang_Thread::set_daemon(thread_oop()); | |
736 | |
737 compiler_thread->set_threadObj(thread_oop()); | |
738 Threads::add(compiler_thread); | |
739 Thread::start(compiler_thread); | |
740 } | |
741 // Let go of Threads_lock before yielding | |
742 os::yield(); // make sure that the compiler thread is started early (especially helpful on SOLARIS) | |
743 | |
744 return compiler_thread; | |
745 } | |
746 | |
747 | |
748 // ------------------------------------------------------------------ | |
749 // CompileBroker::init_compiler_threads | |
750 // | |
751 // Initialize the compilation queue | |
752 void CompileBroker::init_compiler_threads(int compiler_count) { | |
753 EXCEPTION_MARK; | |
754 | |
755 _method_queue = new CompileQueue("MethodQueue", MethodCompileQueue_lock); | |
756 _method_threads = | |
757 new (ResourceObj::C_HEAP) GrowableArray<CompilerThread*>(compiler_count, true); | |
758 | |
759 char name_buffer[256]; | |
760 int i; | |
761 for (i = 0; i < compiler_count; i++) { | |
762 // Create a name for our thread. | |
763 sprintf(name_buffer, "CompilerThread%d", i); | |
764 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK); | |
765 | |
766 CompilerThread* new_thread = make_compiler_thread(name_buffer, _method_queue, counters, CHECK); | |
767 _method_threads->append(new_thread); | |
768 } | |
769 if (UsePerfData) { | |
770 PerfDataManager::create_constant(SUN_CI, "threads", PerfData::U_Bytes, | |
771 compiler_count, CHECK); | |
772 } | |
773 } | |
774 | |
775 // ------------------------------------------------------------------ | |
776 // CompileBroker::is_idle | |
777 bool CompileBroker::is_idle() { | |
778 if (!_method_queue->is_empty()) { | |
779 return false; | |
780 } else { | |
781 int num_threads = _method_threads->length(); | |
782 for (int i=0; i<num_threads; i++) { | |
783 if (_method_threads->at(i)->task() != NULL) { | |
784 return false; | |
785 } | |
786 } | |
787 | |
788 // No pending or active compilations. | |
789 return true; | |
790 } | |
791 } | |
792 | |
793 | |
794 // ------------------------------------------------------------------ | |
795 // CompileBroker::compile_method | |
796 // | |
797 // Request compilation of a method. | |
798 void CompileBroker::compile_method_base(methodHandle method, | |
799 int osr_bci, | |
800 int comp_level, | |
801 methodHandle hot_method, | |
802 int hot_count, | |
803 const char* comment, | |
804 TRAPS) { | |
805 // do nothing if compiler thread(s) is not available | |
806 if (!_initialized ) { | |
807 return; | |
808 } | |
809 | |
810 guarantee(!method->is_abstract(), "cannot compile abstract methods"); | |
811 assert(method->method_holder()->klass_part()->oop_is_instance(), | |
812 "sanity check"); | |
813 assert(!instanceKlass::cast(method->method_holder())->is_not_initialized(), | |
814 "method holder must be initialized"); | |
815 | |
816 if (CIPrintRequests) { | |
817 tty->print("request: "); | |
818 method->print_short_name(tty); | |
819 if (osr_bci != InvocationEntryBci) { | |
820 tty->print(" osr_bci: %d", osr_bci); | |
821 } | |
822 tty->print(" comment: %s count: %d", comment, hot_count); | |
823 if (!hot_method.is_null()) { | |
824 tty->print(" hot: "); | |
825 if (hot_method() != method()) { | |
826 hot_method->print_short_name(tty); | |
827 } else { | |
828 tty->print("yes"); | |
829 } | |
830 } | |
831 tty->cr(); | |
832 } | |
833 | |
834 // A request has been made for compilation. Before we do any | |
835 // real work, check to see if the method has been compiled | |
836 // in the meantime with a definitive result. | |
837 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
838 return; | |
839 } | |
840 | |
841 // If this method is already in the compile queue, then | |
842 // we do not block the current thread. | |
843 if (compilation_is_in_queue(method, osr_bci)) { | |
844 // We may want to decay our counter a bit here to prevent | |
845 // multiple denied requests for compilation. This is an | |
846 // open compilation policy issue. Note: The other possibility, | |
847 // in the case that this is a blocking compile request, is to have | |
848 // all subsequent blocking requesters wait for completion of | |
849 // ongoing compiles. Note that in this case we'll need a protocol | |
850 // for freeing the associated compile tasks. [Or we could have | |
851 // a single static monitor on which all these waiters sleep.] | |
852 return; | |
853 } | |
854 | |
855 // Outputs from the following MutexLocker block: | |
856 CompileTask* task = NULL; | |
857 bool blocking = false; | |
858 | |
859 // Acquire our lock. | |
860 { | |
861 MutexLocker locker(_method_queue->lock(), THREAD); | |
862 | |
863 // Make sure the method has not slipped into the queues since | |
864 // last we checked; note that those checks were "fast bail-outs". | |
865 // Here we need to be more careful, see 14012000 below. | |
866 if (compilation_is_in_queue(method, osr_bci)) { | |
867 return; | |
868 } | |
869 | |
870 // We need to check again to see if the compilation has | |
871 // completed. A previous compilation may have registered | |
872 // some result. | |
873 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
874 return; | |
875 } | |
876 | |
877 // We now know that this compilation is not pending, complete, | |
878 // or prohibited. Assign a compile_id to this compilation | |
879 // and check to see if it is in our [Start..Stop) range. | |
880 uint compile_id = assign_compile_id(method, osr_bci); | |
881 if (compile_id == 0) { | |
882 // The compilation falls outside the allowed range. | |
883 return; | |
884 } | |
885 | |
886 // Should this thread wait for completion of the compile? | |
887 blocking = is_compile_blocking(method, osr_bci); | |
888 | |
889 // We will enter the compilation in the queue. | |
890 // 14012000: Note that this sets the queued_for_compile bits in | |
891 // the target method. We can now reason that a method cannot be | |
892 // queued for compilation more than once, as follows: | |
893 // Before a thread queues a task for compilation, it first acquires | |
894 // the compile queue lock, then checks if the method's queued bits | |
895 // are set or it has already been compiled. Thus there can not be two | |
896 // instances of a compilation task for the same method on the | |
897 // compilation queue. Consider now the case where the compilation | |
898 // thread has already removed a task for that method from the queue | |
899 // and is in the midst of compiling it. In this case, the | |
900 // queued_for_compile bits must be set in the method (and these | |
901 // will be visible to the current thread, since the bits were set | |
902 // under protection of the compile queue lock, which we hold now. | |
903 // When the compilation completes, the compiler thread first sets | |
904 // the compilation result and then clears the queued_for_compile | |
905 // bits. Neither of these actions are protected by a barrier (or done | |
906 // under the protection of a lock), so the only guarantee we have | |
907 // (on machines with TSO (Total Store Order)) is that these values | |
908 // will update in that order. As a result, the only combinations of | |
909 // these bits that the current thread will see are, in temporal order: | |
910 // <RESULT, QUEUE> : | |
911 // <0, 1> : in compile queue, but not yet compiled | |
912 // <1, 1> : compiled but queue bit not cleared | |
913 // <1, 0> : compiled and queue bit cleared | |
914 // Because we first check the queue bits then check the result bits, | |
915 // we are assured that we cannot introduce a duplicate task. | |
916 // Note that if we did the tests in the reverse order (i.e. check | |
917 // result then check queued bit), we could get the result bit before | |
918 // the compilation completed, and the queue bit after the compilation | |
919 // completed, and end up introducing a "duplicate" (redundant) task. | |
920 // In that case, the compiler thread should first check if a method | |
921 // has already been compiled before trying to compile it. | |
922 // NOTE: in the event that there are multiple compiler threads and | |
923 // there is de-optimization/recompilation, things will get hairy, | |
924 // and in that case it's best to protect both the testing (here) of | |
925 // these bits, and their updating (here and elsewhere) under a | |
926 // common lock. | |
927 task = create_compile_task(_method_queue, | |
928 compile_id, method, | |
929 osr_bci, comp_level, | |
930 hot_method, hot_count, comment, | |
931 blocking); | |
932 } | |
933 | |
934 if (blocking) { | |
935 wait_for_completion(task); | |
936 } | |
937 } | |
938 | |
939 | |
940 nmethod* CompileBroker::compile_method(methodHandle method, int osr_bci, | |
941 methodHandle hot_method, int hot_count, | |
942 const char* comment, TRAPS) { | |
943 // make sure arguments make sense | |
944 assert(method->method_holder()->klass_part()->oop_is_instance(), "not an instance method"); | |
945 assert(osr_bci == InvocationEntryBci || (0 <= osr_bci && osr_bci < method->code_size()), "bci out of range"); | |
946 assert(!method->is_abstract() && (osr_bci == InvocationEntryBci || !method->is_native()), "cannot compile abstract/native methods"); | |
947 assert(!instanceKlass::cast(method->method_holder())->is_not_initialized(), "method holder must be initialized"); | |
948 | |
949 int comp_level = CompilationPolicy::policy()->compilation_level(method, osr_bci); | |
950 | |
951 #ifdef TIERED | |
952 if (TieredCompilation && StressTieredRuntime) { | |
953 static int flipper = 0; | |
954 if (is_even(flipper++)) { | |
955 comp_level = CompLevel_fast_compile; | |
956 } else { | |
957 comp_level = CompLevel_full_optimization; | |
958 } | |
959 } | |
960 #ifdef SPARC | |
961 // QQQ FIX ME | |
962 // C2 only returns long results in G1 and c1 doesn't understand so disallow c2 | |
963 // compiles of long results | |
964 if (TieredCompilation && method()->result_type() == T_LONG) { | |
965 comp_level = CompLevel_fast_compile; | |
966 } | |
967 #endif // SPARC | |
968 #endif // TIERED | |
969 | |
970 // return quickly if possible | |
971 | |
972 // lock, make sure that the compilation | |
973 // isn't prohibited in a straightforward way. | |
974 | |
975 if (compiler(comp_level) == NULL || compilation_is_prohibited(method, osr_bci, comp_level)) { | |
976 return NULL; | |
977 } | |
978 | |
979 if (osr_bci == InvocationEntryBci) { | |
980 // standard compilation | |
981 nmethod* method_code = method->code(); | |
982 if (method_code != NULL | |
983 #ifdef TIERED | |
984 && ( method_code->is_compiled_by_c2() || comp_level == CompLevel_fast_compile ) | |
985 #endif // TIERED | |
986 ) { | |
987 return method_code; | |
988 } | |
989 if (method->is_not_compilable(comp_level)) return NULL; | |
1202 | 990 |
1300
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991 if (UseCodeCacheFlushing) { |
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992 nmethod* saved = CodeCache::find_and_remove_saved_code(method()); |
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993 if (saved != NULL) { |
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994 method->set_code(method, saved); |
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995 return saved; |
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996 } |
1202 | 997 } |
998 | |
0 | 999 } else { |
1000 // osr compilation | |
1001 #ifndef TIERED | |
1002 // seems like an assert of dubious value | |
1003 assert(comp_level == CompLevel_full_optimization, | |
1004 "all OSR compiles are assumed to be at a single compilation lavel"); | |
1005 #endif // TIERED | |
1006 nmethod* nm = method->lookup_osr_nmethod_for(osr_bci); | |
1007 if (nm != NULL) return nm; | |
1008 if (method->is_not_osr_compilable()) return NULL; | |
1009 } | |
1010 | |
1011 assert(!HAS_PENDING_EXCEPTION, "No exception should be present"); | |
1012 // some prerequisites that are compiler specific | |
1013 if (compiler(comp_level)->is_c2()) { | |
1014 method->constants()->resolve_string_constants(CHECK_0); | |
1015 // Resolve all classes seen in the signature of the method | |
1016 // we are compiling. | |
1017 methodOopDesc::load_signature_classes(method, CHECK_0); | |
1018 } | |
1019 | |
1020 // If the method is native, do the lookup in the thread requesting | |
1021 // the compilation. Native lookups can load code, which is not | |
1022 // permitted during compilation. | |
1023 // | |
1024 // Note: A native method implies non-osr compilation which is | |
1025 // checked with an assertion at the entry of this method. | |
1026 if (method->is_native()) { | |
1027 bool in_base_library; | |
1028 address adr = NativeLookup::lookup(method, in_base_library, THREAD); | |
1029 if (HAS_PENDING_EXCEPTION) { | |
1030 // In case of an exception looking up the method, we just forget | |
1031 // about it. The interpreter will kick-in and throw the exception. | |
1032 method->set_not_compilable(); // implies is_not_osr_compilable() | |
1033 CLEAR_PENDING_EXCEPTION; | |
1034 return NULL; | |
1035 } | |
1036 assert(method->has_native_function(), "must have native code by now"); | |
1037 } | |
1038 | |
1039 // RedefineClasses() has replaced this method; just return | |
1040 if (method->is_old()) { | |
1041 return NULL; | |
1042 } | |
1043 | |
1044 // JVMTI -- post_compile_event requires jmethod_id() that may require | |
1045 // a lock the compiling thread can not acquire. Prefetch it here. | |
1046 if (JvmtiExport::should_post_compiled_method_load()) { | |
1047 method->jmethod_id(); | |
1048 } | |
1049 | |
1202 | 1050 // If the compiler is shut off due to code cache flushing or otherwise, |
1051 // fail out now so blocking compiles dont hang the java thread | |
1052 if (!should_compile_new_jobs() || (UseCodeCacheFlushing && CodeCache::needs_flushing())) { | |
1053 method->invocation_counter()->decay(); | |
1054 method->backedge_counter()->decay(); | |
1055 return NULL; | |
1056 } | |
1057 | |
0 | 1058 // do the compilation |
1059 if (method->is_native()) { | |
1060 if (!PreferInterpreterNativeStubs) { | |
1061 (void) AdapterHandlerLibrary::create_native_wrapper(method); | |
1062 } else { | |
1063 return NULL; | |
1064 } | |
1065 } else { | |
1066 compile_method_base(method, osr_bci, comp_level, hot_method, hot_count, comment, CHECK_0); | |
1067 } | |
1068 | |
1069 // return requested nmethod | |
1070 return osr_bci == InvocationEntryBci ? method->code() : method->lookup_osr_nmethod_for(osr_bci); | |
1071 } | |
1072 | |
1073 | |
1074 // ------------------------------------------------------------------ | |
1075 // CompileBroker::compilation_is_complete | |
1076 // | |
1077 // See if compilation of this method is already complete. | |
1078 bool CompileBroker::compilation_is_complete(methodHandle method, | |
1079 int osr_bci, | |
1080 int comp_level) { | |
1081 bool is_osr = (osr_bci != standard_entry_bci); | |
1082 if (is_osr) { | |
1083 if (method->is_not_osr_compilable()) { | |
1084 return true; | |
1085 } else { | |
1086 nmethod* result = method->lookup_osr_nmethod_for(osr_bci); | |
1087 return (result != NULL); | |
1088 } | |
1089 } else { | |
1090 if (method->is_not_compilable(comp_level)) { | |
1091 return true; | |
1092 } else { | |
1093 nmethod* result = method->code(); | |
1094 if (result == NULL) return false; | |
1095 #ifdef TIERED | |
1096 if (comp_level == CompLevel_fast_compile) { | |
1097 // At worst the code is from c1 | |
1098 return true; | |
1099 } | |
1100 // comp level must be full opt | |
1101 return result->is_compiled_by_c2(); | |
1102 #endif // TIERED | |
1103 return true; | |
1104 } | |
1105 } | |
1106 } | |
1107 | |
1108 | |
1109 // ------------------------------------------------------------------ | |
1110 // CompileBroker::compilation_is_in_queue | |
1111 // | |
1112 // See if this compilation is already requested. | |
1113 // | |
1114 // Implementation note: there is only a single "is in queue" bit | |
1115 // for each method. This means that the check below is overly | |
1116 // conservative in the sense that an osr compilation in the queue | |
1117 // will block a normal compilation from entering the queue (and vice | |
1118 // versa). This can be remedied by a full queue search to disambiguate | |
1119 // cases. If it is deemed profitible, this may be done. | |
1120 bool CompileBroker::compilation_is_in_queue(methodHandle method, | |
1121 int osr_bci) { | |
1122 return method->queued_for_compilation(); | |
1123 } | |
1124 | |
1125 | |
1126 // ------------------------------------------------------------------ | |
1127 // CompileBroker::compilation_is_prohibited | |
1128 // | |
1129 // See if this compilation is not allowed. | |
1130 bool CompileBroker::compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level) { | |
1131 bool is_native = method->is_native(); | |
1132 // Some compilers may not support the compilation of natives. | |
1133 // QQQ this needs some work ought to only record not compilable at | |
1134 // the specified level | |
1135 if (is_native && | |
1136 (!CICompileNatives || !compiler(comp_level)->supports_native())) { | |
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1137 method->set_not_compilable_quietly(); |
0 | 1138 return true; |
1139 } | |
1140 | |
1141 bool is_osr = (osr_bci != standard_entry_bci); | |
1142 // Some compilers may not support on stack replacement. | |
1143 if (is_osr && | |
1144 (!CICompileOSR || !compiler(comp_level)->supports_osr())) { | |
1145 method->set_not_osr_compilable(); | |
1146 return true; | |
1147 } | |
1148 | |
1149 // The method may be explicitly excluded by the user. | |
1150 bool quietly; | |
1151 if (CompilerOracle::should_exclude(method, quietly)) { | |
1152 if (!quietly) { | |
1153 // This does not happen quietly... | |
1154 ResourceMark rm; | |
1155 tty->print("### Excluding %s:%s", | |
1156 method->is_native() ? "generation of native wrapper" : "compile", | |
1157 (method->is_static() ? " static" : "")); | |
1158 method->print_short_name(tty); | |
1159 tty->cr(); | |
1160 } | |
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1161 method->set_not_compilable_quietly(); |
0 | 1162 } |
1163 | |
1164 return false; | |
1165 } | |
1166 | |
1167 | |
1168 // ------------------------------------------------------------------ | |
1169 // CompileBroker::assign_compile_id | |
1170 // | |
1171 // Assign a serialized id number to this compilation request. If the | |
1172 // number falls out of the allowed range, return a 0. OSR | |
1173 // compilations may be numbered separately from regular compilations | |
1174 // if certain debugging flags are used. | |
1175 uint CompileBroker::assign_compile_id(methodHandle method, int osr_bci) { | |
1176 assert(_method_queue->lock()->owner() == JavaThread::current(), | |
1177 "must hold the compilation queue lock"); | |
1178 bool is_osr = (osr_bci != standard_entry_bci); | |
1179 assert(!method->is_native(), "no longer compile natives"); | |
1180 uint id; | |
1181 if (CICountOSR && is_osr) { | |
1182 id = ++_osr_compilation_id; | |
1183 if ((uint)CIStartOSR <= id && id < (uint)CIStopOSR) { | |
1184 return id; | |
1185 } | |
1186 } else { | |
1187 id = ++_compilation_id; | |
1188 if ((uint)CIStart <= id && id < (uint)CIStop) { | |
1189 return id; | |
1190 } | |
1191 } | |
1192 | |
1193 // Method was not in the appropriate compilation range. | |
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1194 method->set_not_compilable_quietly(); |
0 | 1195 return 0; |
1196 } | |
1197 | |
1198 | |
1199 // ------------------------------------------------------------------ | |
1200 // CompileBroker::is_compile_blocking | |
1201 // | |
1202 // Should the current thread be blocked until this compilation request | |
1203 // has been fulfilled? | |
1204 bool CompileBroker::is_compile_blocking(methodHandle method, int osr_bci) { | |
1205 return !BackgroundCompilation; | |
1206 } | |
1207 | |
1208 | |
1209 // ------------------------------------------------------------------ | |
1210 // CompileBroker::preload_classes | |
1211 void CompileBroker::preload_classes(methodHandle method, TRAPS) { | |
1212 // Move this code over from c1_Compiler.cpp | |
1213 ShouldNotReachHere(); | |
1214 } | |
1215 | |
1216 | |
1217 // ------------------------------------------------------------------ | |
1218 // CompileBroker::create_compile_task | |
1219 // | |
1220 // Create a CompileTask object representing the current request for | |
1221 // compilation. Add this task to the queue. | |
1222 CompileTask* CompileBroker::create_compile_task(CompileQueue* queue, | |
1223 int compile_id, | |
1224 methodHandle method, | |
1225 int osr_bci, | |
1226 int comp_level, | |
1227 methodHandle hot_method, | |
1228 int hot_count, | |
1229 const char* comment, | |
1230 bool blocking) { | |
1231 CompileTask* new_task = allocate_task(); | |
1232 new_task->initialize(compile_id, method, osr_bci, comp_level, | |
1233 hot_method, hot_count, comment, | |
1234 blocking); | |
1235 queue->add(new_task); | |
1236 return new_task; | |
1237 } | |
1238 | |
1239 | |
1240 // ------------------------------------------------------------------ | |
1241 // CompileBroker::allocate_task | |
1242 // | |
1243 // Allocate a CompileTask, from the free list if possible. | |
1244 CompileTask* CompileBroker::allocate_task() { | |
1245 MutexLocker locker(CompileTaskAlloc_lock); | |
1246 CompileTask* task = NULL; | |
1247 if (_task_free_list != NULL) { | |
1248 task = _task_free_list; | |
1249 _task_free_list = task->next(); | |
1250 task->set_next(NULL); | |
1251 } else { | |
1252 task = new CompileTask(); | |
1253 task->set_next(NULL); | |
1254 } | |
1255 return task; | |
1256 } | |
1257 | |
1258 | |
1259 // ------------------------------------------------------------------ | |
1260 // CompileBroker::free_task | |
1261 // | |
1262 // Add a task to the free list. | |
1263 void CompileBroker::free_task(CompileTask* task) { | |
1264 MutexLocker locker(CompileTaskAlloc_lock); | |
1265 task->free(); | |
1266 task->set_next(_task_free_list); | |
1267 _task_free_list = task; | |
1268 } | |
1269 | |
1270 | |
1271 // ------------------------------------------------------------------ | |
1272 // CompileBroker::wait_for_completion | |
1273 // | |
1274 // Wait for the given method CompileTask to complete. | |
1275 void CompileBroker::wait_for_completion(CompileTask* task) { | |
1276 if (CIPrintCompileQueue) { | |
1277 tty->print_cr("BLOCKING FOR COMPILE"); | |
1278 } | |
1279 | |
1280 assert(task->is_blocking(), "can only wait on blocking task"); | |
1281 | |
1282 JavaThread *thread = JavaThread::current(); | |
1283 thread->set_blocked_on_compilation(true); | |
1284 | |
1285 methodHandle method(thread, | |
1286 (methodOop)JNIHandles::resolve(task->method_handle())); | |
1287 { | |
1288 MutexLocker waiter(task->lock(), thread); | |
1289 | |
1290 while (!task->is_complete()) | |
1291 task->lock()->wait(); | |
1292 } | |
1293 // It is harmless to check this status without the lock, because | |
1294 // completion is a stable property (until the task object is recycled). | |
1295 assert(task->is_complete(), "Compilation should have completed"); | |
1296 assert(task->code_handle() == NULL, "must be reset"); | |
1297 | |
1298 thread->set_blocked_on_compilation(false); | |
1299 | |
1300 // By convention, the waiter is responsible for recycling a | |
1301 // blocking CompileTask. Since there is only one waiter ever | |
1302 // waiting on a CompileTask, we know that no one else will | |
1303 // be using this CompileTask; we can free it. | |
1304 free_task(task); | |
1305 } | |
1306 | |
1307 // ------------------------------------------------------------------ | |
1308 // CompileBroker::compiler_thread_loop | |
1309 // | |
1310 // The main loop run by a CompilerThread. | |
1311 void CompileBroker::compiler_thread_loop() { | |
1312 CompilerThread* thread = CompilerThread::current(); | |
1313 CompileQueue* queue = thread->queue(); | |
1314 | |
1315 // For the thread that initializes the ciObjectFactory | |
1316 // this resource mark holds all the shared objects | |
1317 ResourceMark rm; | |
1318 | |
1319 // First thread to get here will initialize the compiler interface | |
1320 | |
1321 if (!ciObjectFactory::is_initialized()) { | |
1322 ASSERT_IN_VM; | |
1323 MutexLocker only_one (CompileThread_lock, thread); | |
1324 if (!ciObjectFactory::is_initialized()) { | |
1325 ciObjectFactory::initialize(); | |
1326 } | |
1327 } | |
1328 | |
1329 // Open a log. | |
1330 if (LogCompilation) { | |
1331 init_compiler_thread_log(); | |
1332 } | |
1333 CompileLog* log = thread->log(); | |
1334 if (log != NULL) { | |
1335 log->begin_elem("start_compile_thread thread='" UINTX_FORMAT "' process='%d'", | |
1336 os::current_thread_id(), | |
1337 os::current_process_id()); | |
1338 log->stamp(); | |
1339 log->end_elem(); | |
1340 } | |
1341 | |
1342 while (true) { | |
1343 { | |
1344 // We need this HandleMark to avoid leaking VM handles. | |
1345 HandleMark hm(thread); | |
1202 | 1346 |
0 | 1347 if (CodeCache::unallocated_capacity() < CodeCacheMinimumFreeSpace) { |
1202 | 1348 // the code cache is really full |
1349 handle_full_code_cache(); | |
1350 } else if (UseCodeCacheFlushing && CodeCache::needs_flushing()) { | |
1351 // Attempt to start cleaning the code cache while there is still a little headroom | |
1352 NMethodSweeper::handle_full_code_cache(false); | |
0 | 1353 } |
1354 | |
1355 CompileTask* task = queue->get(); | |
1356 | |
1357 // Give compiler threads an extra quanta. They tend to be bursty and | |
1358 // this helps the compiler to finish up the job. | |
1359 if( CompilerThreadHintNoPreempt ) | |
1360 os::hint_no_preempt(); | |
1361 | |
1362 // trace per thread time and compile statistics | |
1363 CompilerCounters* counters = ((CompilerThread*)thread)->counters(); | |
1364 PerfTraceTimedEvent(counters->time_counter(), counters->compile_counter()); | |
1365 | |
1366 // Assign the task to the current thread. Mark this compilation | |
1367 // thread as active for the profiler. | |
1368 CompileTaskWrapper ctw(task); | |
1369 nmethodLocker result_handle; // (handle for the nmethod produced by this task) | |
1370 task->set_code_handle(&result_handle); | |
1371 methodHandle method(thread, | |
1372 (methodOop)JNIHandles::resolve(task->method_handle())); | |
1373 | |
1374 // Never compile a method if breakpoints are present in it | |
1375 if (method()->number_of_breakpoints() == 0) { | |
1376 // Compile the method. | |
1202 | 1377 if ((UseCompiler || AlwaysCompileLoopMethods) && CompileBroker::should_compile_new_jobs()) { |
0 | 1378 #ifdef COMPILER1 |
1379 // Allow repeating compilations for the purpose of benchmarking | |
1380 // compile speed. This is not useful for customers. | |
1381 if (CompilationRepeat != 0) { | |
1382 int compile_count = CompilationRepeat; | |
1383 while (compile_count > 0) { | |
1384 invoke_compiler_on_method(task); | |
1385 nmethod* nm = method->code(); | |
1386 if (nm != NULL) { | |
1387 nm->make_zombie(); | |
1388 method->clear_code(); | |
1389 } | |
1390 compile_count--; | |
1391 } | |
1392 } | |
1393 #endif /* COMPILER1 */ | |
1394 invoke_compiler_on_method(task); | |
1395 } else { | |
1396 // After compilation is disabled, remove remaining methods from queue | |
1397 method->clear_queued_for_compilation(); | |
1398 } | |
1399 } | |
1400 } | |
1401 } | |
1402 } | |
1403 | |
1404 | |
1405 // ------------------------------------------------------------------ | |
1406 // CompileBroker::init_compiler_thread_log | |
1407 // | |
1408 // Set up state required by +LogCompilation. | |
1409 void CompileBroker::init_compiler_thread_log() { | |
1410 CompilerThread* thread = CompilerThread::current(); | |
1411 char fileBuf[4*K]; | |
1412 FILE* fp = NULL; | |
1413 char* file = NULL; | |
1414 intx thread_id = os::current_thread_id(); | |
1415 for (int try_temp_dir = 1; try_temp_dir >= 0; try_temp_dir--) { | |
1416 const char* dir = (try_temp_dir ? os::get_temp_directory() : NULL); | |
1417 if (dir == NULL) dir = ""; | |
1418 sprintf(fileBuf, "%shs_c" UINTX_FORMAT "_pid%u.log", | |
1419 dir, thread_id, os::current_process_id()); | |
1420 fp = fopen(fileBuf, "at"); | |
1421 if (fp != NULL) { | |
1422 file = NEW_C_HEAP_ARRAY(char, strlen(fileBuf)+1); | |
1423 strcpy(file, fileBuf); | |
1424 break; | |
1425 } | |
1426 } | |
1427 if (fp == NULL) { | |
1428 warning("Cannot open log file: %s", fileBuf); | |
1429 } else { | |
1430 if (LogCompilation && Verbose) | |
1431 tty->print_cr("Opening compilation log %s", file); | |
1432 CompileLog* log = new(ResourceObj::C_HEAP) CompileLog(file, fp, thread_id); | |
1433 thread->init_log(log); | |
1434 | |
1435 if (xtty != NULL) { | |
1436 ttyLocker ttyl; | |
1437 | |
1438 // Record any per thread log files | |
1439 xtty->elem("thread_logfile thread='%d' filename='%s'", thread_id, file); | |
1440 } | |
1441 } | |
1442 } | |
1443 | |
1444 // ------------------------------------------------------------------ | |
1445 // CompileBroker::set_should_block | |
1446 // | |
1447 // Set _should_block. | |
1448 // Call this from the VM, with Threads_lock held and a safepoint requested. | |
1449 void CompileBroker::set_should_block() { | |
1450 assert(Threads_lock->owner() == Thread::current(), "must have threads lock"); | |
1451 assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint already"); | |
1452 #ifndef PRODUCT | |
1453 if (PrintCompilation && (Verbose || WizardMode)) | |
1454 tty->print_cr("notifying compiler thread pool to block"); | |
1455 #endif | |
1456 _should_block = true; | |
1457 } | |
1458 | |
1459 // ------------------------------------------------------------------ | |
1460 // CompileBroker::maybe_block | |
1461 // | |
1462 // Call this from the compiler at convenient points, to poll for _should_block. | |
1463 void CompileBroker::maybe_block() { | |
1464 if (_should_block) { | |
1465 #ifndef PRODUCT | |
1466 if (PrintCompilation && (Verbose || WizardMode)) | |
1467 tty->print_cr("compiler thread " INTPTR_FORMAT " poll detects block request", Thread::current()); | |
1468 #endif | |
1469 ThreadInVMfromNative tivfn(JavaThread::current()); | |
1470 } | |
1471 } | |
1472 | |
1473 | |
1474 // ------------------------------------------------------------------ | |
1475 // CompileBroker::invoke_compiler_on_method | |
1476 // | |
1477 // Compile a method. | |
1478 // | |
1479 void CompileBroker::invoke_compiler_on_method(CompileTask* task) { | |
1480 if (PrintCompilation) { | |
1481 ResourceMark rm; | |
1482 task->print_line(); | |
1483 } | |
1484 elapsedTimer time; | |
1485 | |
1486 CompilerThread* thread = CompilerThread::current(); | |
1487 ResourceMark rm(thread); | |
1488 | |
1489 // Common flags. | |
1490 uint compile_id = task->compile_id(); | |
1491 int osr_bci = task->osr_bci(); | |
1492 bool is_osr = (osr_bci != standard_entry_bci); | |
1493 bool should_log = (thread->log() != NULL); | |
1494 bool should_break = false; | |
1495 { | |
1496 // create the handle inside it's own block so it can't | |
1497 // accidentally be referenced once the thread transitions to | |
1498 // native. The NoHandleMark before the transition should catch | |
1499 // any cases where this occurs in the future. | |
1500 methodHandle method(thread, | |
1501 (methodOop)JNIHandles::resolve(task->method_handle())); | |
1502 should_break = check_break_at(method, compile_id, is_osr); | |
1503 if (should_log && !CompilerOracle::should_log(method)) { | |
1504 should_log = false; | |
1505 } | |
1506 assert(!method->is_native(), "no longer compile natives"); | |
1507 | |
1508 // Save information about this method in case of failure. | |
1509 set_last_compile(thread, method, is_osr, task->comp_level()); | |
1510 | |
1511 DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler(task->comp_level()), method); | |
1512 } | |
1513 | |
1514 // Allocate a new set of JNI handles. | |
1515 push_jni_handle_block(); | |
1516 jobject target_handle = JNIHandles::make_local(thread, JNIHandles::resolve(task->method_handle())); | |
1517 int compilable = ciEnv::MethodCompilable; | |
1518 { | |
1519 int system_dictionary_modification_counter; | |
1520 { | |
1521 MutexLocker locker(Compile_lock, thread); | |
1522 system_dictionary_modification_counter = SystemDictionary::number_of_modifications(); | |
1523 } | |
1524 | |
1525 NoHandleMark nhm; | |
1526 ThreadToNativeFromVM ttn(thread); | |
1527 | |
1528 ciEnv ci_env(task, system_dictionary_modification_counter); | |
1529 if (should_break) { | |
1530 ci_env.set_break_at_compile(true); | |
1531 } | |
1532 if (should_log) { | |
1533 ci_env.set_log(thread->log()); | |
1534 } | |
1535 assert(thread->env() == &ci_env, "set by ci_env"); | |
1536 // The thread-env() field is cleared in ~CompileTaskWrapper. | |
1537 | |
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1538 // Cache Jvmti state |
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1539 ci_env.cache_jvmti_state(); |
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1540 |
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1541 // Cache DTrace flags |
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1542 ci_env.cache_dtrace_flags(); |
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1543 |
0 | 1544 ciMethod* target = ci_env.get_method_from_handle(target_handle); |
1545 | |
1546 TraceTime t1("compilation", &time); | |
1547 | |
1548 compiler(task->comp_level())->compile_method(&ci_env, target, osr_bci); | |
1549 | |
1550 if (!ci_env.failing() && task->code() == NULL) { | |
1551 //assert(false, "compiler should always document failure"); | |
1552 // The compiler elected, without comment, not to register a result. | |
1553 // Do not attempt further compilations of this method. | |
1554 ci_env.record_method_not_compilable("compile failed"); | |
1555 } | |
1556 | |
1557 if (ci_env.failing()) { | |
1558 // Copy this bit to the enclosing block: | |
1559 compilable = ci_env.compilable(); | |
1560 if (PrintCompilation) { | |
1561 const char* reason = ci_env.failure_reason(); | |
1562 if (compilable == ciEnv::MethodCompilable_not_at_tier) { | |
1563 if (is_highest_tier_compile(ci_env.comp_level())) { | |
1564 // Already at highest tier, promote to not compilable. | |
1565 compilable = ciEnv::MethodCompilable_never; | |
1566 } else { | |
1567 tty->print_cr("%3d COMPILE SKIPPED: %s (retry at different tier)", compile_id, reason); | |
1568 } | |
1569 } | |
1570 | |
1571 if (compilable == ciEnv::MethodCompilable_never) { | |
1572 tty->print_cr("%3d COMPILE SKIPPED: %s (not retryable)", compile_id, reason); | |
1573 } else if (compilable == ciEnv::MethodCompilable) { | |
1574 tty->print_cr("%3d COMPILE SKIPPED: %s", compile_id, reason); | |
1575 } | |
1576 } | |
1577 } else { | |
1578 task->mark_success(); | |
1579 task->set_num_inlined_bytecodes(ci_env.num_inlined_bytecodes()); | |
1580 } | |
1581 } | |
1582 pop_jni_handle_block(); | |
1583 | |
1584 methodHandle method(thread, | |
1585 (methodOop)JNIHandles::resolve(task->method_handle())); | |
1586 | |
1587 DTRACE_METHOD_COMPILE_END_PROBE(compiler(task->comp_level()), method, task->is_success()); | |
1588 | |
1589 collect_statistics(thread, time, task); | |
1590 | |
1591 if (compilable == ciEnv::MethodCompilable_never) { | |
1592 if (is_osr) { | |
1593 method->set_not_osr_compilable(); | |
1594 } else { | |
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1595 method->set_not_compilable_quietly(); |
0 | 1596 } |
1597 } else if (compilable == ciEnv::MethodCompilable_not_at_tier) { | |
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1598 method->set_not_compilable_quietly(task->comp_level()); |
0 | 1599 } |
1600 | |
1601 // Note that the queued_for_compilation bits are cleared without | |
1602 // protection of a mutex. [They were set by the requester thread, | |
1603 // when adding the task to the complie queue -- at which time the | |
1604 // compile queue lock was held. Subsequently, we acquired the compile | |
1605 // queue lock to get this task off the compile queue; thus (to belabour | |
1606 // the point somewhat) our clearing of the bits must be occurring | |
1607 // only after the setting of the bits. See also 14012000 above. | |
1608 method->clear_queued_for_compilation(); | |
1609 | |
1610 #ifdef ASSERT | |
1611 if (CollectedHeap::fired_fake_oom()) { | |
1612 // The current compile received a fake OOM during compilation so | |
1613 // go ahead and exit the VM since the test apparently succeeded | |
1614 tty->print_cr("*** Shutting down VM after successful fake OOM"); | |
1615 vm_exit(0); | |
1616 } | |
1617 #endif | |
1618 } | |
1619 | |
1620 | |
1621 // ------------------------------------------------------------------ | |
1202 | 1622 // CompileBroker::handle_full_code_cache |
1623 // | |
1624 // The CodeCache is full. Print out warning and disable compilation or | |
1625 // try code cache cleaning so compilation can continue later. | |
1626 void CompileBroker::handle_full_code_cache() { | |
1627 UseInterpreter = true; | |
1628 if (UseCompiler || AlwaysCompileLoopMethods ) { | |
1629 CompilerThread* thread = CompilerThread::current(); | |
1630 CompileLog* log = thread->log(); | |
1631 if (log != NULL) { | |
1632 log->begin_elem("code_cache_full"); | |
1633 log->stamp(); | |
1634 log->end_elem(); | |
1635 } | |
1636 #ifndef PRODUCT | |
1637 warning("CodeCache is full. Compiler has been disabled"); | |
1638 if (CompileTheWorld || ExitOnFullCodeCache) { | |
1639 before_exit(JavaThread::current()); | |
1640 exit_globals(); // will delete tty | |
1641 vm_direct_exit(CompileTheWorld ? 0 : 1); | |
1642 } | |
1643 #endif | |
1644 if (UseCodeCacheFlushing) { | |
1645 NMethodSweeper::handle_full_code_cache(true); | |
1646 } else { | |
1647 UseCompiler = false; | |
1648 AlwaysCompileLoopMethods = false; | |
1649 } | |
1650 } | |
1651 } | |
1652 | |
1653 // ------------------------------------------------------------------ | |
0 | 1654 // CompileBroker::set_last_compile |
1655 // | |
1656 // Record this compilation for debugging purposes. | |
1657 void CompileBroker::set_last_compile(CompilerThread* thread, methodHandle method, bool is_osr, int comp_level) { | |
1658 ResourceMark rm; | |
1659 char* method_name = method->name()->as_C_string(); | |
1660 strncpy(_last_method_compiled, method_name, CompileBroker::name_buffer_length); | |
1661 char current_method[CompilerCounters::cmname_buffer_length]; | |
1662 size_t maxLen = CompilerCounters::cmname_buffer_length; | |
1663 | |
1664 if (UsePerfData) { | |
1665 const char* class_name = method->method_holder()->klass_part()->name()->as_C_string(); | |
1666 | |
1667 size_t s1len = strlen(class_name); | |
1668 size_t s2len = strlen(method_name); | |
1669 | |
1670 // check if we need to truncate the string | |
1671 if (s1len + s2len + 2 > maxLen) { | |
1672 | |
1673 // the strategy is to lop off the leading characters of the | |
1674 // class name and the trailing characters of the method name. | |
1675 | |
1676 if (s2len + 2 > maxLen) { | |
1677 // lop of the entire class name string, let snprintf handle | |
1678 // truncation of the method name. | |
1679 class_name += s1len; // null string | |
1680 } | |
1681 else { | |
1682 // lop off the extra characters from the front of the class name | |
1683 class_name += ((s1len + s2len + 2) - maxLen); | |
1684 } | |
1685 } | |
1686 | |
1687 jio_snprintf(current_method, maxLen, "%s %s", class_name, method_name); | |
1688 } | |
1689 | |
1690 if (CICountOSR && is_osr) { | |
1691 _last_compile_type = osr_compile; | |
1692 } else { | |
1693 _last_compile_type = normal_compile; | |
1694 } | |
1695 _last_compile_level = comp_level; | |
1696 | |
1697 if (UsePerfData) { | |
1698 CompilerCounters* counters = thread->counters(); | |
1699 counters->set_current_method(current_method); | |
1700 counters->set_compile_type((jlong)_last_compile_type); | |
1701 } | |
1702 } | |
1703 | |
1704 | |
1705 // ------------------------------------------------------------------ | |
1706 // CompileBroker::push_jni_handle_block | |
1707 // | |
1708 // Push on a new block of JNI handles. | |
1709 void CompileBroker::push_jni_handle_block() { | |
1710 JavaThread* thread = JavaThread::current(); | |
1711 | |
1712 // Allocate a new block for JNI handles. | |
1713 // Inlined code from jni_PushLocalFrame() | |
1714 JNIHandleBlock* java_handles = thread->active_handles(); | |
1715 JNIHandleBlock* compile_handles = JNIHandleBlock::allocate_block(thread); | |
1716 assert(compile_handles != NULL && java_handles != NULL, "should not be NULL"); | |
1717 compile_handles->set_pop_frame_link(java_handles); // make sure java handles get gc'd. | |
1718 thread->set_active_handles(compile_handles); | |
1719 } | |
1720 | |
1721 | |
1722 // ------------------------------------------------------------------ | |
1723 // CompileBroker::pop_jni_handle_block | |
1724 // | |
1725 // Pop off the current block of JNI handles. | |
1726 void CompileBroker::pop_jni_handle_block() { | |
1727 JavaThread* thread = JavaThread::current(); | |
1728 | |
1729 // Release our JNI handle block | |
1730 JNIHandleBlock* compile_handles = thread->active_handles(); | |
1731 JNIHandleBlock* java_handles = compile_handles->pop_frame_link(); | |
1732 thread->set_active_handles(java_handles); | |
1733 compile_handles->set_pop_frame_link(NULL); | |
1734 JNIHandleBlock::release_block(compile_handles, thread); // may block | |
1735 } | |
1736 | |
1737 | |
1738 // ------------------------------------------------------------------ | |
1739 // CompileBroker::check_break_at | |
1740 // | |
1741 // Should the compilation break at the current compilation. | |
1742 bool CompileBroker::check_break_at(methodHandle method, int compile_id, bool is_osr) { | |
1743 if (CICountOSR && is_osr && (compile_id == CIBreakAtOSR)) { | |
1744 return true; | |
1745 } else if( CompilerOracle::should_break_at(method) ) { // break when compiling | |
1746 return true; | |
1747 } else { | |
1748 return (compile_id == CIBreakAt); | |
1749 } | |
1750 } | |
1751 | |
1752 // ------------------------------------------------------------------ | |
1753 // CompileBroker::collect_statistics | |
1754 // | |
1755 // Collect statistics about the compilation. | |
1756 | |
1757 void CompileBroker::collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task) { | |
1758 bool success = task->is_success(); | |
1759 methodHandle method (thread, (methodOop)JNIHandles::resolve(task->method_handle())); | |
1760 uint compile_id = task->compile_id(); | |
1761 bool is_osr = (task->osr_bci() != standard_entry_bci); | |
1762 nmethod* code = task->code(); | |
1763 CompilerCounters* counters = thread->counters(); | |
1764 | |
1765 assert(code == NULL || code->is_locked_by_vm(), "will survive the MutexLocker"); | |
1766 MutexLocker locker(CompileStatistics_lock); | |
1767 | |
1768 // _perf variables are production performance counters which are | |
1769 // updated regardless of the setting of the CITime and CITimeEach flags | |
1770 // | |
1771 if (!success) { | |
1772 _total_bailout_count++; | |
1773 if (UsePerfData) { | |
1774 _perf_last_failed_method->set_value(counters->current_method()); | |
1775 _perf_last_failed_type->set_value(counters->compile_type()); | |
1776 _perf_total_bailout_count->inc(); | |
1777 } | |
1778 } else if (code == NULL) { | |
1779 if (UsePerfData) { | |
1780 _perf_last_invalidated_method->set_value(counters->current_method()); | |
1781 _perf_last_invalidated_type->set_value(counters->compile_type()); | |
1782 _perf_total_invalidated_count->inc(); | |
1783 } | |
1784 _total_invalidated_count++; | |
1785 } else { | |
1786 // Compilation succeeded | |
1787 | |
1788 // update compilation ticks - used by the implementation of | |
1789 // java.lang.management.CompilationMBean | |
1790 _perf_total_compilation->inc(time.ticks()); | |
1791 | |
1792 if (CITime) { | |
1793 _t_total_compilation.add(time); | |
1794 if (is_osr) { | |
1795 _t_osr_compilation.add(time); | |
1796 _sum_osr_bytes_compiled += method->code_size() + task->num_inlined_bytecodes(); | |
1797 } else { | |
1798 _t_standard_compilation.add(time); | |
1799 _sum_standard_bytes_compiled += method->code_size() + task->num_inlined_bytecodes(); | |
1800 } | |
1801 } | |
1802 | |
1803 if (UsePerfData) { | |
1804 // save the name of the last method compiled | |
1805 _perf_last_method->set_value(counters->current_method()); | |
1806 _perf_last_compile_type->set_value(counters->compile_type()); | |
1807 _perf_last_compile_size->set_value(method->code_size() + | |
1808 task->num_inlined_bytecodes()); | |
1809 if (is_osr) { | |
1810 _perf_osr_compilation->inc(time.ticks()); | |
1811 _perf_sum_osr_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes()); | |
1812 } else { | |
1813 _perf_standard_compilation->inc(time.ticks()); | |
1814 _perf_sum_standard_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes()); | |
1815 } | |
1816 } | |
1817 | |
1818 if (CITimeEach) { | |
1819 float bytes_per_sec = 1.0 * (method->code_size() + task->num_inlined_bytecodes()) / time.seconds(); | |
1820 tty->print_cr("%3d seconds: %f bytes/sec : %f (bytes %d + %d inlined)", | |
1821 compile_id, time.seconds(), bytes_per_sec, method->code_size(), task->num_inlined_bytecodes()); | |
1822 } | |
1823 | |
1824 // Collect counts of successful compilations | |
1825 _sum_nmethod_size += code->total_size(); | |
1826 _sum_nmethod_code_size += code->code_size(); | |
1827 _total_compile_count++; | |
1828 | |
1829 if (UsePerfData) { | |
1830 _perf_sum_nmethod_size->inc(code->total_size()); | |
1831 _perf_sum_nmethod_code_size->inc(code->code_size()); | |
1832 _perf_total_compile_count->inc(); | |
1833 } | |
1834 | |
1835 if (is_osr) { | |
1836 if (UsePerfData) _perf_total_osr_compile_count->inc(); | |
1837 _total_osr_compile_count++; | |
1838 } else { | |
1839 if (UsePerfData) _perf_total_standard_compile_count->inc(); | |
1840 _total_standard_compile_count++; | |
1841 } | |
1842 } | |
1843 // set the current method for the thread to null | |
1844 if (UsePerfData) counters->set_current_method(""); | |
1845 } | |
1846 | |
1847 | |
1848 | |
1849 void CompileBroker::print_times() { | |
1850 tty->cr(); | |
1851 tty->print_cr("Accumulated compiler times (for compiled methods only)"); | |
1852 tty->print_cr("------------------------------------------------"); | |
1853 //0000000000111111111122222222223333333333444444444455555555556666666666 | |
1854 //0123456789012345678901234567890123456789012345678901234567890123456789 | |
1855 tty->print_cr(" Total compilation time : %6.3f s", CompileBroker::_t_total_compilation.seconds()); | |
1856 tty->print_cr(" Standard compilation : %6.3f s, Average : %2.3f", | |
1857 CompileBroker::_t_standard_compilation.seconds(), | |
1858 CompileBroker::_t_standard_compilation.seconds() / CompileBroker::_total_standard_compile_count); | |
1859 tty->print_cr(" On stack replacement : %6.3f s, Average : %2.3f", CompileBroker::_t_osr_compilation.seconds(), CompileBroker::_t_osr_compilation.seconds() / CompileBroker::_total_osr_compile_count); | |
1131 | 1860 |
1861 if (compiler(CompLevel_fast_compile)) { | |
1862 compiler(CompLevel_fast_compile)->print_timers(); | |
1863 if (compiler(CompLevel_fast_compile) != compiler(CompLevel_highest_tier)) | |
1864 compiler(CompLevel_highest_tier)->print_timers(); | |
0 | 1865 } |
1866 | |
1867 tty->cr(); | |
1868 int tcb = CompileBroker::_sum_osr_bytes_compiled + CompileBroker::_sum_standard_bytes_compiled; | |
1869 tty->print_cr(" Total compiled bytecodes : %6d bytes", tcb); | |
1870 tty->print_cr(" Standard compilation : %6d bytes", CompileBroker::_sum_standard_bytes_compiled); | |
1871 tty->print_cr(" On stack replacement : %6d bytes", CompileBroker::_sum_osr_bytes_compiled); | |
1872 int bps = (int)(tcb / CompileBroker::_t_total_compilation.seconds()); | |
1873 tty->print_cr(" Average compilation speed: %6d bytes/s", bps); | |
1874 tty->cr(); | |
1875 tty->print_cr(" nmethod code size : %6d bytes", CompileBroker::_sum_nmethod_code_size); | |
1876 tty->print_cr(" nmethod total size : %6d bytes", CompileBroker::_sum_nmethod_size); | |
1877 } | |
1878 | |
1879 | |
1880 // Debugging output for failure | |
1881 void CompileBroker::print_last_compile() { | |
1882 if ( _last_compile_level != CompLevel_none && | |
1883 compiler(_last_compile_level) != NULL && | |
1884 _last_method_compiled != NULL && | |
1885 _last_compile_type != no_compile) { | |
1886 if (_last_compile_type == osr_compile) { | |
1887 tty->print_cr("Last parse: [osr]%d+++(%d) %s", | |
1888 _osr_compilation_id, _last_compile_level, _last_method_compiled); | |
1889 } else { | |
1890 tty->print_cr("Last parse: %d+++(%d) %s", | |
1891 _compilation_id, _last_compile_level, _last_method_compiled); | |
1892 } | |
1893 } | |
1894 } | |
1895 | |
1896 | |
1897 void CompileBroker::print_compiler_threads_on(outputStream* st) { | |
1898 #ifndef PRODUCT | |
1899 st->print_cr("Compiler thread printing unimplemented."); | |
1900 st->cr(); | |
1901 #endif | |
1902 } |