Mercurial > hg > graal-jvmci-8
annotate src/share/vm/compiler/compileBroker.cpp @ 1964:22ef3370343b
7000349: Tiered reacts incorrectly to C1 compilation failures
Summary: Fix policy reaction to C1 comilation failures, make C1 properly report errors.
Reviewed-by: kvn
author | iveresov |
---|---|
date | Tue, 16 Nov 2010 15:57:16 -0800 |
parents | d5d065957597 |
children | b675ff1ca7a3 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
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 | |
1783 | 126 CompileQueue* CompileBroker::_c2_method_queue = NULL; |
127 CompileQueue* CompileBroker::_c1_method_queue = NULL; | |
0 | 128 CompileTask* CompileBroker::_task_free_list = NULL; |
129 | |
130 GrowableArray<CompilerThread*>* CompileBroker::_method_threads = NULL; | |
131 | |
132 | |
133 CompileTaskWrapper::CompileTaskWrapper(CompileTask* task) { | |
134 CompilerThread* thread = CompilerThread::current(); | |
135 thread->set_task(task); | |
136 CompileLog* log = thread->log(); | |
137 if (log != NULL) task->log_task_start(log); | |
138 } | |
139 | |
140 CompileTaskWrapper::~CompileTaskWrapper() { | |
141 CompilerThread* thread = CompilerThread::current(); | |
142 CompileTask* task = thread->task(); | |
143 CompileLog* log = thread->log(); | |
144 if (log != NULL) task->log_task_done(log); | |
145 thread->set_task(NULL); | |
146 task->set_code_handle(NULL); | |
147 DEBUG_ONLY(thread->set_env((ciEnv*)badAddress)); | |
148 if (task->is_blocking()) { | |
149 MutexLocker notifier(task->lock(), thread); | |
150 task->mark_complete(); | |
151 // Notify the waiting thread that the compilation has completed. | |
152 task->lock()->notify_all(); | |
153 } else { | |
154 task->mark_complete(); | |
155 | |
156 // By convention, the compiling thread is responsible for | |
157 // recycling a non-blocking CompileTask. | |
158 CompileBroker::free_task(task); | |
159 } | |
160 } | |
161 | |
162 | |
163 // ------------------------------------------------------------------ | |
164 // CompileTask::initialize | |
165 void CompileTask::initialize(int compile_id, | |
166 methodHandle method, | |
167 int osr_bci, | |
168 int comp_level, | |
169 methodHandle hot_method, | |
170 int hot_count, | |
171 const char* comment, | |
172 bool is_blocking) { | |
173 assert(!_lock->is_locked(), "bad locking"); | |
174 | |
175 _compile_id = compile_id; | |
176 _method = JNIHandles::make_global(method); | |
177 _osr_bci = osr_bci; | |
178 _is_blocking = is_blocking; | |
179 _comp_level = comp_level; | |
180 _num_inlined_bytecodes = 0; | |
181 | |
182 _is_complete = false; | |
183 _is_success = false; | |
184 _code_handle = NULL; | |
185 | |
186 _hot_method = NULL; | |
187 _hot_count = hot_count; | |
188 _time_queued = 0; // tidy | |
189 _comment = comment; | |
190 | |
191 if (LogCompilation) { | |
192 _time_queued = os::elapsed_counter(); | |
193 if (hot_method.not_null()) { | |
194 if (hot_method == method) { | |
195 _hot_method = _method; | |
196 } else { | |
197 _hot_method = JNIHandles::make_global(hot_method); | |
198 } | |
199 } | |
200 } | |
201 | |
202 _next = NULL; | |
203 } | |
204 | |
205 // ------------------------------------------------------------------ | |
206 // CompileTask::code/set_code | |
207 nmethod* CompileTask::code() const { | |
208 if (_code_handle == NULL) return NULL; | |
209 return _code_handle->code(); | |
210 } | |
211 void CompileTask::set_code(nmethod* nm) { | |
212 if (_code_handle == NULL && nm == NULL) return; | |
213 guarantee(_code_handle != NULL, ""); | |
214 _code_handle->set_code(nm); | |
215 if (nm == NULL) _code_handle = NULL; // drop the handle also | |
216 } | |
217 | |
218 // ------------------------------------------------------------------ | |
219 // CompileTask::free | |
220 void CompileTask::free() { | |
221 set_code(NULL); | |
222 assert(!_lock->is_locked(), "Should not be locked when freed"); | |
223 if (_hot_method != NULL && _hot_method != _method) { | |
224 JNIHandles::destroy_global(_hot_method); | |
225 } | |
226 JNIHandles::destroy_global(_method); | |
227 } | |
228 | |
229 | |
230 // ------------------------------------------------------------------ | |
231 // CompileTask::print | |
232 void CompileTask::print() { | |
233 tty->print("<CompileTask compile_id=%d ", _compile_id); | |
234 tty->print("method="); | |
235 ((methodOop)JNIHandles::resolve(_method))->print_name(tty); | |
236 tty->print_cr(" osr_bci=%d is_blocking=%s is_complete=%s is_success=%s>", | |
237 _osr_bci, bool_to_str(_is_blocking), | |
238 bool_to_str(_is_complete), bool_to_str(_is_success)); | |
239 } | |
240 | |
1783 | 241 |
242 void CompileTask::print_compilation(outputStream *st, methodOop method, char* method_name) { | |
243 nmethod::print_compilation(st, method_name,/*title*/ NULL, method, | |
244 is_blocking(), compile_id(), osr_bci(), comp_level()); | |
245 } | |
246 | |
0 | 247 // ------------------------------------------------------------------ |
248 // CompileTask::print_line_on_error | |
249 // | |
250 // This function is called by fatal error handler when the thread | |
251 // causing troubles is a compiler thread. | |
252 // | |
253 // Do not grab any lock, do not allocate memory. | |
254 // | |
255 // Otherwise it's the same as CompileTask::print_line() | |
256 // | |
257 void CompileTask::print_line_on_error(outputStream* st, char* buf, int buflen) { | |
258 methodOop method = (methodOop)JNIHandles::resolve(_method); | |
259 // print compiler name | |
260 st->print("%s:", CompileBroker::compiler(comp_level())->name()); | |
1783 | 261 char* method_name = NULL; |
262 if (method != NULL) { | |
263 method_name = method->name_and_sig_as_C_string(buf, buflen); | |
0 | 264 } |
1783 | 265 print_compilation(st, method, method_name); |
0 | 266 } |
267 | |
268 // ------------------------------------------------------------------ | |
269 // CompileTask::print_line | |
270 void CompileTask::print_line() { | |
271 Thread *thread = Thread::current(); | |
272 methodHandle method(thread, | |
273 (methodOop)JNIHandles::resolve(method_handle())); | |
274 ResourceMark rm(thread); | |
275 | |
276 ttyLocker ttyl; // keep the following output all in one block | |
277 | |
278 // print compiler name if requested | |
279 if (CIPrintCompilerName) tty->print("%s:", CompileBroker::compiler(comp_level())->name()); | |
1783 | 280 print_compilation(tty, method(), NULL); |
0 | 281 } |
282 | |
283 | |
284 // ------------------------------------------------------------------ | |
285 // CompileTask::log_task | |
286 void CompileTask::log_task(xmlStream* log) { | |
287 Thread* thread = Thread::current(); | |
288 methodHandle method(thread, | |
289 (methodOop)JNIHandles::resolve(method_handle())); | |
290 ResourceMark rm(thread); | |
291 | |
292 // <task id='9' method='M' osr_bci='X' level='1' blocking='1' stamp='1.234'> | |
293 if (_compile_id != 0) log->print(" compile_id='%d'", _compile_id); | |
294 if (_osr_bci != CompileBroker::standard_entry_bci) { | |
295 log->print(" compile_kind='osr'"); // same as nmethod::compile_kind | |
296 } // else compile_kind='c2c' | |
297 if (!method.is_null()) log->method(method); | |
298 if (_osr_bci != CompileBroker::standard_entry_bci) { | |
299 log->print(" osr_bci='%d'", _osr_bci); | |
300 } | |
301 if (_comp_level != CompLevel_highest_tier) { | |
302 log->print(" level='%d'", _comp_level); | |
303 } | |
304 if (_is_blocking) { | |
305 log->print(" blocking='1'"); | |
306 } | |
307 log->stamp(); | |
308 } | |
309 | |
310 | |
311 // ------------------------------------------------------------------ | |
312 // CompileTask::log_task_queued | |
313 void CompileTask::log_task_queued() { | |
314 Thread* thread = Thread::current(); | |
315 ttyLocker ttyl; | |
316 ResourceMark rm(thread); | |
317 | |
318 xtty->begin_elem("task_queued"); | |
319 log_task(xtty); | |
320 if (_comment != NULL) { | |
321 xtty->print(" comment='%s'", _comment); | |
322 } | |
323 if (_hot_method != NULL) { | |
324 methodHandle hot(thread, | |
325 (methodOop)JNIHandles::resolve(_hot_method)); | |
326 methodHandle method(thread, | |
327 (methodOop)JNIHandles::resolve(_method)); | |
328 if (hot() != method()) { | |
329 xtty->method(hot); | |
330 } | |
331 } | |
332 if (_hot_count != 0) { | |
333 xtty->print(" hot_count='%d'", _hot_count); | |
334 } | |
335 xtty->end_elem(); | |
336 } | |
337 | |
338 | |
339 // ------------------------------------------------------------------ | |
340 // CompileTask::log_task_start | |
341 void CompileTask::log_task_start(CompileLog* log) { | |
342 log->begin_head("task"); | |
343 log_task(log); | |
344 log->end_head(); | |
345 } | |
346 | |
347 | |
348 // ------------------------------------------------------------------ | |
349 // CompileTask::log_task_done | |
350 void CompileTask::log_task_done(CompileLog* log) { | |
351 Thread* thread = Thread::current(); | |
352 methodHandle method(thread, | |
353 (methodOop)JNIHandles::resolve(method_handle())); | |
354 ResourceMark rm(thread); | |
355 | |
356 // <task_done ... stamp='1.234'> </task> | |
357 nmethod* nm = code(); | |
358 log->begin_elem("task_done success='%d' nmsize='%d' count='%d'", | |
1748 | 359 _is_success, nm == NULL ? 0 : nm->content_size(), |
0 | 360 method->invocation_count()); |
361 int bec = method->backedge_count(); | |
362 if (bec != 0) log->print(" backedge_count='%d'", bec); | |
363 // Note: "_is_complete" is about to be set, but is not. | |
364 if (_num_inlined_bytecodes != 0) { | |
365 log->print(" inlined_bytes='%d'", _num_inlined_bytecodes); | |
366 } | |
367 log->stamp(); | |
368 log->end_elem(); | |
369 log->tail("task"); | |
370 log->clear_identities(); // next task will have different CI | |
371 if (log->unflushed_count() > 2000) { | |
372 log->flush(); | |
373 } | |
374 log->mark_file_end(); | |
375 } | |
376 | |
377 | |
378 | |
379 // ------------------------------------------------------------------ | |
380 // CompileQueue::add | |
381 // | |
382 // Add a CompileTask to a CompileQueue | |
383 void CompileQueue::add(CompileTask* task) { | |
384 assert(lock()->owned_by_self(), "must own lock"); | |
385 | |
386 task->set_next(NULL); | |
1783 | 387 task->set_prev(NULL); |
0 | 388 |
389 if (_last == NULL) { | |
390 // The compile queue is empty. | |
391 assert(_first == NULL, "queue is empty"); | |
392 _first = task; | |
393 _last = task; | |
394 } else { | |
395 // Append the task to the queue. | |
396 assert(_last->next() == NULL, "not last"); | |
397 _last->set_next(task); | |
1783 | 398 task->set_prev(_last); |
0 | 399 _last = task; |
400 } | |
1783 | 401 ++_size; |
0 | 402 |
403 // Mark the method as being in the compile queue. | |
404 ((methodOop)JNIHandles::resolve(task->method_handle()))->set_queued_for_compilation(); | |
405 | |
406 if (CIPrintCompileQueue) { | |
407 print(); | |
408 } | |
409 | |
410 if (LogCompilation && xtty != NULL) { | |
411 task->log_task_queued(); | |
412 } | |
413 | |
414 // Notify CompilerThreads that a task is available. | |
1783 | 415 lock()->notify_all(); |
0 | 416 } |
417 | |
418 // ------------------------------------------------------------------ | |
419 // CompileQueue::get | |
420 // | |
421 // Get the next CompileTask from a CompileQueue | |
422 CompileTask* CompileQueue::get() { | |
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423 NMethodSweeper::possibly_sweep(); |
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424 |
0 | 425 MutexLocker locker(lock()); |
426 // Wait for an available CompileTask. | |
427 while (_first == NULL) { | |
428 // There is no work to be done right now. Wait. | |
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429 if (UseCodeCacheFlushing && (!CompileBroker::should_compile_new_jobs() || CodeCache::needs_flushing())) { |
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430 // During the emergency sweeping periods, wake up and sweep occasionally |
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431 bool timedout = lock()->wait(!Mutex::_no_safepoint_check_flag, NmethodSweepCheckInterval*1000); |
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432 if (timedout) { |
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433 MutexUnlocker ul(lock()); |
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434 // When otherwise not busy, run nmethod sweeping |
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435 NMethodSweeper::possibly_sweep(); |
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436 } |
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437 } else { |
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438 // During normal operation no need to wake up on timer |
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439 lock()->wait(); |
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440 } |
0 | 441 } |
1783 | 442 CompileTask* task = CompilationPolicy::policy()->select_task(this); |
443 remove(task); | |
444 return task; | |
445 } | |
0 | 446 |
1783 | 447 void CompileQueue::remove(CompileTask* task) |
448 { | |
449 assert(lock()->owned_by_self(), "must own lock"); | |
450 if (task->prev() != NULL) { | |
451 task->prev()->set_next(task->next()); | |
452 } else { | |
453 // max is the first element | |
454 assert(task == _first, "Sanity"); | |
455 _first = task->next(); | |
0 | 456 } |
457 | |
1783 | 458 if (task->next() != NULL) { |
459 task->next()->set_prev(task->prev()); | |
460 } else { | |
461 // max is the last element | |
462 assert(task == _last, "Sanity"); | |
463 _last = task->prev(); | |
464 } | |
465 --_size; | |
0 | 466 } |
467 | |
468 // ------------------------------------------------------------------ | |
469 // CompileQueue::print | |
470 void CompileQueue::print() { | |
471 tty->print_cr("Contents of %s", name()); | |
472 tty->print_cr("----------------------"); | |
473 CompileTask* task = _first; | |
474 while (task != NULL) { | |
475 task->print_line(); | |
476 task = task->next(); | |
477 } | |
478 tty->print_cr("----------------------"); | |
479 } | |
480 | |
481 CompilerCounters::CompilerCounters(const char* thread_name, int instance, TRAPS) { | |
482 | |
483 _current_method[0] = '\0'; | |
484 _compile_type = CompileBroker::no_compile; | |
485 | |
486 if (UsePerfData) { | |
487 ResourceMark rm; | |
488 | |
489 // create the thread instance name space string - don't create an | |
490 // instance subspace if instance is -1 - keeps the adapterThread | |
491 // counters from having a ".0" namespace. | |
492 const char* thread_i = (instance == -1) ? thread_name : | |
493 PerfDataManager::name_space(thread_name, instance); | |
494 | |
495 | |
496 char* name = PerfDataManager::counter_name(thread_i, "method"); | |
497 _perf_current_method = | |
498 PerfDataManager::create_string_variable(SUN_CI, name, | |
499 cmname_buffer_length, | |
500 _current_method, CHECK); | |
501 | |
502 name = PerfDataManager::counter_name(thread_i, "type"); | |
503 _perf_compile_type = PerfDataManager::create_variable(SUN_CI, name, | |
504 PerfData::U_None, | |
505 (jlong)_compile_type, | |
506 CHECK); | |
507 | |
508 name = PerfDataManager::counter_name(thread_i, "time"); | |
509 _perf_time = PerfDataManager::create_counter(SUN_CI, name, | |
510 PerfData::U_Ticks, CHECK); | |
511 | |
512 name = PerfDataManager::counter_name(thread_i, "compiles"); | |
513 _perf_compiles = PerfDataManager::create_counter(SUN_CI, name, | |
514 PerfData::U_Events, CHECK); | |
515 } | |
516 } | |
517 | |
518 // ------------------------------------------------------------------ | |
519 // CompileBroker::compilation_init | |
520 // | |
521 // Initialize the Compilation object | |
522 void CompileBroker::compilation_init() { | |
523 _last_method_compiled[0] = '\0'; | |
524 | |
525 // Set the interface to the current compiler(s). | |
1783 | 526 int c1_count = CompilationPolicy::policy()->compiler_count(CompLevel_simple); |
527 int c2_count = CompilationPolicy::policy()->compiler_count(CompLevel_full_optimization); | |
0 | 528 #ifdef COMPILER1 |
1783 | 529 if (c1_count > 0) { |
530 _compilers[0] = new Compiler(); | |
531 } | |
0 | 532 #endif // COMPILER1 |
533 | |
534 #ifdef COMPILER2 | |
1783 | 535 if (c2_count > 0) { |
536 _compilers[1] = new C2Compiler(); | |
537 } | |
0 | 538 #endif // COMPILER2 |
539 | |
1692 | 540 #ifdef SHARK |
541 #if defined(COMPILER1) || defined(COMPILER2) | |
542 #error "Can't use COMPILER1 or COMPILER2 with shark" | |
543 #endif | |
544 _compilers[0] = new SharkCompiler(); | |
545 _compilers[1] = _compilers[0]; | |
546 #endif | |
547 | |
0 | 548 // Initialize the CompileTask free list |
549 _task_free_list = NULL; | |
550 | |
551 // Start the CompilerThreads | |
1783 | 552 init_compiler_threads(c1_count, c2_count); |
0 | 553 // totalTime performance counter is always created as it is required |
554 // by the implementation of java.lang.management.CompilationMBean. | |
555 { | |
556 EXCEPTION_MARK; | |
557 _perf_total_compilation = | |
558 PerfDataManager::create_counter(JAVA_CI, "totalTime", | |
559 PerfData::U_Ticks, CHECK); | |
560 } | |
561 | |
562 | |
563 if (UsePerfData) { | |
564 | |
565 EXCEPTION_MARK; | |
566 | |
567 // create the jvmstat performance counters | |
568 _perf_osr_compilation = | |
569 PerfDataManager::create_counter(SUN_CI, "osrTime", | |
570 PerfData::U_Ticks, CHECK); | |
571 | |
572 _perf_standard_compilation = | |
573 PerfDataManager::create_counter(SUN_CI, "standardTime", | |
574 PerfData::U_Ticks, CHECK); | |
575 | |
576 _perf_total_bailout_count = | |
577 PerfDataManager::create_counter(SUN_CI, "totalBailouts", | |
578 PerfData::U_Events, CHECK); | |
579 | |
580 _perf_total_invalidated_count = | |
581 PerfDataManager::create_counter(SUN_CI, "totalInvalidates", | |
582 PerfData::U_Events, CHECK); | |
583 | |
584 _perf_total_compile_count = | |
585 PerfDataManager::create_counter(SUN_CI, "totalCompiles", | |
586 PerfData::U_Events, CHECK); | |
587 _perf_total_osr_compile_count = | |
588 PerfDataManager::create_counter(SUN_CI, "osrCompiles", | |
589 PerfData::U_Events, CHECK); | |
590 | |
591 _perf_total_standard_compile_count = | |
592 PerfDataManager::create_counter(SUN_CI, "standardCompiles", | |
593 PerfData::U_Events, CHECK); | |
594 | |
595 _perf_sum_osr_bytes_compiled = | |
596 PerfDataManager::create_counter(SUN_CI, "osrBytes", | |
597 PerfData::U_Bytes, CHECK); | |
598 | |
599 _perf_sum_standard_bytes_compiled = | |
600 PerfDataManager::create_counter(SUN_CI, "standardBytes", | |
601 PerfData::U_Bytes, CHECK); | |
602 | |
603 _perf_sum_nmethod_size = | |
604 PerfDataManager::create_counter(SUN_CI, "nmethodSize", | |
605 PerfData::U_Bytes, CHECK); | |
606 | |
607 _perf_sum_nmethod_code_size = | |
608 PerfDataManager::create_counter(SUN_CI, "nmethodCodeSize", | |
609 PerfData::U_Bytes, CHECK); | |
610 | |
611 _perf_last_method = | |
612 PerfDataManager::create_string_variable(SUN_CI, "lastMethod", | |
613 CompilerCounters::cmname_buffer_length, | |
614 "", CHECK); | |
615 | |
616 _perf_last_failed_method = | |
617 PerfDataManager::create_string_variable(SUN_CI, "lastFailedMethod", | |
618 CompilerCounters::cmname_buffer_length, | |
619 "", CHECK); | |
620 | |
621 _perf_last_invalidated_method = | |
622 PerfDataManager::create_string_variable(SUN_CI, "lastInvalidatedMethod", | |
623 CompilerCounters::cmname_buffer_length, | |
624 "", CHECK); | |
625 | |
626 _perf_last_compile_type = | |
627 PerfDataManager::create_variable(SUN_CI, "lastType", | |
628 PerfData::U_None, | |
629 (jlong)CompileBroker::no_compile, | |
630 CHECK); | |
631 | |
632 _perf_last_compile_size = | |
633 PerfDataManager::create_variable(SUN_CI, "lastSize", | |
634 PerfData::U_Bytes, | |
635 (jlong)CompileBroker::no_compile, | |
636 CHECK); | |
637 | |
638 | |
639 _perf_last_failed_type = | |
640 PerfDataManager::create_variable(SUN_CI, "lastFailedType", | |
641 PerfData::U_None, | |
642 (jlong)CompileBroker::no_compile, | |
643 CHECK); | |
644 | |
645 _perf_last_invalidated_type = | |
646 PerfDataManager::create_variable(SUN_CI, "lastInvalidatedType", | |
647 PerfData::U_None, | |
648 (jlong)CompileBroker::no_compile, | |
649 CHECK); | |
650 } | |
651 | |
652 _initialized = true; | |
653 } | |
654 | |
655 | |
656 | |
657 // ------------------------------------------------------------------ | |
658 // CompileBroker::make_compiler_thread | |
659 CompilerThread* CompileBroker::make_compiler_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, TRAPS) { | |
660 CompilerThread* compiler_thread = NULL; | |
661 | |
662 klassOop k = | |
663 SystemDictionary::resolve_or_fail(vmSymbolHandles::java_lang_Thread(), | |
664 true, CHECK_0); | |
665 instanceKlassHandle klass (THREAD, k); | |
666 instanceHandle thread_oop = klass->allocate_instance_handle(CHECK_0); | |
667 Handle string = java_lang_String::create_from_str(name, CHECK_0); | |
668 | |
669 // Initialize thread_oop to put it into the system threadGroup | |
670 Handle thread_group (THREAD, Universe::system_thread_group()); | |
671 JavaValue result(T_VOID); | |
672 JavaCalls::call_special(&result, thread_oop, | |
673 klass, | |
674 vmSymbolHandles::object_initializer_name(), | |
675 vmSymbolHandles::threadgroup_string_void_signature(), | |
676 thread_group, | |
677 string, | |
678 CHECK_0); | |
679 | |
680 { | |
681 MutexLocker mu(Threads_lock, THREAD); | |
682 compiler_thread = new CompilerThread(queue, counters); | |
683 // At this point the new CompilerThread data-races with this startup | |
684 // thread (which I believe is the primoridal thread and NOT the VM | |
685 // thread). This means Java bytecodes being executed at startup can | |
686 // queue compile jobs which will run at whatever default priority the | |
687 // newly created CompilerThread runs at. | |
688 | |
689 | |
690 // At this point it may be possible that no osthread was created for the | |
691 // JavaThread due to lack of memory. We would have to throw an exception | |
692 // in that case. However, since this must work and we do not allow | |
693 // exceptions anyway, check and abort if this fails. | |
694 | |
695 if (compiler_thread == NULL || compiler_thread->osthread() == NULL){ | |
696 vm_exit_during_initialization("java.lang.OutOfMemoryError", | |
697 "unable to create new native thread"); | |
698 } | |
699 | |
700 java_lang_Thread::set_thread(thread_oop(), compiler_thread); | |
701 | |
702 // Note that this only sets the JavaThread _priority field, which by | |
703 // definition is limited to Java priorities and not OS priorities. | |
704 // The os-priority is set in the CompilerThread startup code itself | |
705 java_lang_Thread::set_priority(thread_oop(), NearMaxPriority); | |
706 // CLEANUP PRIORITIES: This -if- statement hids a bug whereby the compiler | |
707 // threads never have their OS priority set. The assumption here is to | |
708 // enable the Performance group to do flag tuning, figure out a suitable | |
709 // CompilerThreadPriority, and then remove this 'if' statement (and | |
710 // comment) and unconditionally set the priority. | |
711 | |
712 // Compiler Threads should be at the highest Priority | |
713 if ( CompilerThreadPriority != -1 ) | |
714 os::set_native_priority( compiler_thread, CompilerThreadPriority ); | |
715 else | |
716 os::set_native_priority( compiler_thread, os::java_to_os_priority[NearMaxPriority]); | |
717 | |
718 // Note that I cannot call os::set_priority because it expects Java | |
719 // priorities and I am *explicitly* using OS priorities so that it's | |
720 // possible to set the compiler thread priority higher than any Java | |
721 // thread. | |
722 | |
723 java_lang_Thread::set_daemon(thread_oop()); | |
724 | |
725 compiler_thread->set_threadObj(thread_oop()); | |
726 Threads::add(compiler_thread); | |
727 Thread::start(compiler_thread); | |
728 } | |
729 // Let go of Threads_lock before yielding | |
730 os::yield(); // make sure that the compiler thread is started early (especially helpful on SOLARIS) | |
731 | |
732 return compiler_thread; | |
733 } | |
734 | |
735 | |
736 // ------------------------------------------------------------------ | |
737 // CompileBroker::init_compiler_threads | |
738 // | |
739 // Initialize the compilation queue | |
1783 | 740 void CompileBroker::init_compiler_threads(int c1_compiler_count, int c2_compiler_count) { |
0 | 741 EXCEPTION_MARK; |
1783 | 742 assert(c2_compiler_count > 0 || c1_compiler_count > 0, "No compilers?"); |
743 if (c2_compiler_count > 0) { | |
744 _c2_method_queue = new CompileQueue("C2MethodQueue", MethodCompileQueue_lock); | |
745 } | |
746 if (c1_compiler_count > 0) { | |
747 _c1_method_queue = new CompileQueue("C1MethodQueue", MethodCompileQueue_lock); | |
748 } | |
0 | 749 |
1783 | 750 int compiler_count = c1_compiler_count + c2_compiler_count; |
751 | |
0 | 752 _method_threads = |
753 new (ResourceObj::C_HEAP) GrowableArray<CompilerThread*>(compiler_count, true); | |
754 | |
755 char name_buffer[256]; | |
1783 | 756 for (int i = 0; i < c2_compiler_count; i++) { |
0 | 757 // Create a name for our thread. |
1783 | 758 sprintf(name_buffer, "C2 CompilerThread%d", i); |
0 | 759 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK); |
1783 | 760 CompilerThread* new_thread = make_compiler_thread(name_buffer, _c2_method_queue, counters, CHECK); |
0 | 761 _method_threads->append(new_thread); |
762 } | |
1783 | 763 |
764 for (int i = c2_compiler_count; i < compiler_count; i++) { | |
765 // Create a name for our thread. | |
766 sprintf(name_buffer, "C1 CompilerThread%d", i); | |
767 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK); | |
768 CompilerThread* new_thread = make_compiler_thread(name_buffer, _c1_method_queue, counters, CHECK); | |
769 _method_threads->append(new_thread); | |
770 } | |
771 | |
0 | 772 if (UsePerfData) { |
773 PerfDataManager::create_constant(SUN_CI, "threads", PerfData::U_Bytes, | |
774 compiler_count, CHECK); | |
775 } | |
776 } | |
777 | |
778 // ------------------------------------------------------------------ | |
779 // CompileBroker::is_idle | |
780 bool CompileBroker::is_idle() { | |
1783 | 781 if (_c2_method_queue != NULL && !_c2_method_queue->is_empty()) { |
782 return false; | |
783 } else if (_c1_method_queue != NULL && !_c1_method_queue->is_empty()) { | |
0 | 784 return false; |
785 } else { | |
786 int num_threads = _method_threads->length(); | |
787 for (int i=0; i<num_threads; i++) { | |
788 if (_method_threads->at(i)->task() != NULL) { | |
789 return false; | |
790 } | |
791 } | |
792 | |
793 // No pending or active compilations. | |
794 return true; | |
795 } | |
796 } | |
797 | |
798 | |
799 // ------------------------------------------------------------------ | |
800 // CompileBroker::compile_method | |
801 // | |
802 // Request compilation of a method. | |
803 void CompileBroker::compile_method_base(methodHandle method, | |
804 int osr_bci, | |
805 int comp_level, | |
806 methodHandle hot_method, | |
807 int hot_count, | |
808 const char* comment, | |
809 TRAPS) { | |
810 // do nothing if compiler thread(s) is not available | |
811 if (!_initialized ) { | |
812 return; | |
813 } | |
814 | |
815 guarantee(!method->is_abstract(), "cannot compile abstract methods"); | |
816 assert(method->method_holder()->klass_part()->oop_is_instance(), | |
817 "sanity check"); | |
818 assert(!instanceKlass::cast(method->method_holder())->is_not_initialized(), | |
819 "method holder must be initialized"); | |
820 | |
821 if (CIPrintRequests) { | |
822 tty->print("request: "); | |
823 method->print_short_name(tty); | |
824 if (osr_bci != InvocationEntryBci) { | |
825 tty->print(" osr_bci: %d", osr_bci); | |
826 } | |
827 tty->print(" comment: %s count: %d", comment, hot_count); | |
828 if (!hot_method.is_null()) { | |
829 tty->print(" hot: "); | |
830 if (hot_method() != method()) { | |
831 hot_method->print_short_name(tty); | |
832 } else { | |
833 tty->print("yes"); | |
834 } | |
835 } | |
836 tty->cr(); | |
837 } | |
838 | |
839 // A request has been made for compilation. Before we do any | |
840 // real work, check to see if the method has been compiled | |
841 // in the meantime with a definitive result. | |
842 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
843 return; | |
844 } | |
845 | |
1783 | 846 |
0 | 847 // If this method is already in the compile queue, then |
848 // we do not block the current thread. | |
849 if (compilation_is_in_queue(method, osr_bci)) { | |
850 // We may want to decay our counter a bit here to prevent | |
851 // multiple denied requests for compilation. This is an | |
852 // open compilation policy issue. Note: The other possibility, | |
853 // in the case that this is a blocking compile request, is to have | |
854 // all subsequent blocking requesters wait for completion of | |
855 // ongoing compiles. Note that in this case we'll need a protocol | |
856 // for freeing the associated compile tasks. [Or we could have | |
857 // a single static monitor on which all these waiters sleep.] | |
858 return; | |
859 } | |
860 | |
861 // Outputs from the following MutexLocker block: | |
862 CompileTask* task = NULL; | |
863 bool blocking = false; | |
1783 | 864 CompileQueue* queue = compile_queue(comp_level); |
0 | 865 |
866 // Acquire our lock. | |
867 { | |
1783 | 868 MutexLocker locker(queue->lock(), THREAD); |
0 | 869 |
870 // Make sure the method has not slipped into the queues since | |
871 // last we checked; note that those checks were "fast bail-outs". | |
872 // Here we need to be more careful, see 14012000 below. | |
873 if (compilation_is_in_queue(method, osr_bci)) { | |
874 return; | |
875 } | |
876 | |
877 // We need to check again to see if the compilation has | |
878 // completed. A previous compilation may have registered | |
879 // some result. | |
880 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
881 return; | |
882 } | |
883 | |
884 // We now know that this compilation is not pending, complete, | |
885 // or prohibited. Assign a compile_id to this compilation | |
886 // and check to see if it is in our [Start..Stop) range. | |
887 uint compile_id = assign_compile_id(method, osr_bci); | |
888 if (compile_id == 0) { | |
889 // The compilation falls outside the allowed range. | |
890 return; | |
891 } | |
892 | |
893 // Should this thread wait for completion of the compile? | |
894 blocking = is_compile_blocking(method, osr_bci); | |
895 | |
896 // We will enter the compilation in the queue. | |
897 // 14012000: Note that this sets the queued_for_compile bits in | |
898 // the target method. We can now reason that a method cannot be | |
899 // queued for compilation more than once, as follows: | |
900 // Before a thread queues a task for compilation, it first acquires | |
901 // the compile queue lock, then checks if the method's queued bits | |
902 // are set or it has already been compiled. Thus there can not be two | |
903 // instances of a compilation task for the same method on the | |
904 // compilation queue. Consider now the case where the compilation | |
905 // thread has already removed a task for that method from the queue | |
906 // and is in the midst of compiling it. In this case, the | |
907 // queued_for_compile bits must be set in the method (and these | |
908 // will be visible to the current thread, since the bits were set | |
909 // under protection of the compile queue lock, which we hold now. | |
910 // When the compilation completes, the compiler thread first sets | |
911 // the compilation result and then clears the queued_for_compile | |
912 // bits. Neither of these actions are protected by a barrier (or done | |
913 // under the protection of a lock), so the only guarantee we have | |
914 // (on machines with TSO (Total Store Order)) is that these values | |
915 // will update in that order. As a result, the only combinations of | |
916 // these bits that the current thread will see are, in temporal order: | |
917 // <RESULT, QUEUE> : | |
918 // <0, 1> : in compile queue, but not yet compiled | |
919 // <1, 1> : compiled but queue bit not cleared | |
920 // <1, 0> : compiled and queue bit cleared | |
921 // Because we first check the queue bits then check the result bits, | |
922 // we are assured that we cannot introduce a duplicate task. | |
923 // Note that if we did the tests in the reverse order (i.e. check | |
924 // result then check queued bit), we could get the result bit before | |
925 // the compilation completed, and the queue bit after the compilation | |
926 // completed, and end up introducing a "duplicate" (redundant) task. | |
927 // In that case, the compiler thread should first check if a method | |
928 // has already been compiled before trying to compile it. | |
929 // NOTE: in the event that there are multiple compiler threads and | |
930 // there is de-optimization/recompilation, things will get hairy, | |
931 // and in that case it's best to protect both the testing (here) of | |
932 // these bits, and their updating (here and elsewhere) under a | |
933 // common lock. | |
1783 | 934 task = create_compile_task(queue, |
0 | 935 compile_id, method, |
936 osr_bci, comp_level, | |
937 hot_method, hot_count, comment, | |
938 blocking); | |
939 } | |
940 | |
941 if (blocking) { | |
942 wait_for_completion(task); | |
943 } | |
944 } | |
945 | |
946 | |
947 nmethod* CompileBroker::compile_method(methodHandle method, int osr_bci, | |
1783 | 948 int comp_level, |
0 | 949 methodHandle hot_method, int hot_count, |
950 const char* comment, TRAPS) { | |
951 // make sure arguments make sense | |
952 assert(method->method_holder()->klass_part()->oop_is_instance(), "not an instance method"); | |
953 assert(osr_bci == InvocationEntryBci || (0 <= osr_bci && osr_bci < method->code_size()), "bci out of range"); | |
954 assert(!method->is_abstract() && (osr_bci == InvocationEntryBci || !method->is_native()), "cannot compile abstract/native methods"); | |
955 assert(!instanceKlass::cast(method->method_holder())->is_not_initialized(), "method holder must be initialized"); | |
956 | |
1783 | 957 if (!TieredCompilation) { |
958 comp_level = CompLevel_highest_tier; | |
0 | 959 } |
960 | |
961 // return quickly if possible | |
962 | |
963 // lock, make sure that the compilation | |
964 // isn't prohibited in a straightforward way. | |
965 | |
966 if (compiler(comp_level) == NULL || compilation_is_prohibited(method, osr_bci, comp_level)) { | |
967 return NULL; | |
968 } | |
969 | |
970 if (osr_bci == InvocationEntryBci) { | |
971 // standard compilation | |
972 nmethod* method_code = method->code(); | |
1783 | 973 if (method_code != NULL) { |
974 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
975 return method_code; | |
976 } | |
0 | 977 } |
978 if (method->is_not_compilable(comp_level)) return NULL; | |
1202 | 979 |
1300
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980 if (UseCodeCacheFlushing) { |
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981 nmethod* saved = CodeCache::find_and_remove_saved_code(method()); |
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982 if (saved != NULL) { |
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983 method->set_code(method, saved); |
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984 return saved; |
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985 } |
1202 | 986 } |
987 | |
0 | 988 } else { |
989 // osr compilation | |
990 #ifndef TIERED | |
991 // seems like an assert of dubious value | |
1783 | 992 assert(comp_level == CompLevel_highest_tier, |
0 | 993 "all OSR compiles are assumed to be at a single compilation lavel"); |
994 #endif // TIERED | |
1783 | 995 // We accept a higher level osr method |
996 nmethod* nm = method->lookup_osr_nmethod_for(osr_bci, comp_level, false); | |
0 | 997 if (nm != NULL) return nm; |
998 if (method->is_not_osr_compilable()) return NULL; | |
999 } | |
1000 | |
1001 assert(!HAS_PENDING_EXCEPTION, "No exception should be present"); | |
1002 // some prerequisites that are compiler specific | |
1003 if (compiler(comp_level)->is_c2()) { | |
1004 method->constants()->resolve_string_constants(CHECK_0); | |
1005 // Resolve all classes seen in the signature of the method | |
1006 // we are compiling. | |
1007 methodOopDesc::load_signature_classes(method, CHECK_0); | |
1008 } | |
1009 | |
1010 // If the method is native, do the lookup in the thread requesting | |
1011 // the compilation. Native lookups can load code, which is not | |
1012 // permitted during compilation. | |
1013 // | |
1014 // Note: A native method implies non-osr compilation which is | |
1015 // checked with an assertion at the entry of this method. | |
1016 if (method->is_native()) { | |
1017 bool in_base_library; | |
1018 address adr = NativeLookup::lookup(method, in_base_library, THREAD); | |
1019 if (HAS_PENDING_EXCEPTION) { | |
1020 // In case of an exception looking up the method, we just forget | |
1021 // about it. The interpreter will kick-in and throw the exception. | |
1022 method->set_not_compilable(); // implies is_not_osr_compilable() | |
1023 CLEAR_PENDING_EXCEPTION; | |
1024 return NULL; | |
1025 } | |
1026 assert(method->has_native_function(), "must have native code by now"); | |
1027 } | |
1028 | |
1029 // RedefineClasses() has replaced this method; just return | |
1030 if (method->is_old()) { | |
1031 return NULL; | |
1032 } | |
1033 | |
1034 // JVMTI -- post_compile_event requires jmethod_id() that may require | |
1035 // a lock the compiling thread can not acquire. Prefetch it here. | |
1036 if (JvmtiExport::should_post_compiled_method_load()) { | |
1037 method->jmethod_id(); | |
1038 } | |
1039 | |
1202 | 1040 // If the compiler is shut off due to code cache flushing or otherwise, |
1041 // fail out now so blocking compiles dont hang the java thread | |
1042 if (!should_compile_new_jobs() || (UseCodeCacheFlushing && CodeCache::needs_flushing())) { | |
1783 | 1043 CompilationPolicy::policy()->delay_compilation(method()); |
1202 | 1044 return NULL; |
1045 } | |
1046 | |
0 | 1047 // do the compilation |
1048 if (method->is_native()) { | |
1049 if (!PreferInterpreterNativeStubs) { | |
1050 (void) AdapterHandlerLibrary::create_native_wrapper(method); | |
1051 } else { | |
1052 return NULL; | |
1053 } | |
1054 } else { | |
1055 compile_method_base(method, osr_bci, comp_level, hot_method, hot_count, comment, CHECK_0); | |
1056 } | |
1057 | |
1058 // return requested nmethod | |
1783 | 1059 // We accept a higher level osr method |
1060 return osr_bci == InvocationEntryBci ? method->code() : method->lookup_osr_nmethod_for(osr_bci, comp_level, false); | |
0 | 1061 } |
1062 | |
1063 | |
1064 // ------------------------------------------------------------------ | |
1065 // CompileBroker::compilation_is_complete | |
1066 // | |
1067 // See if compilation of this method is already complete. | |
1068 bool CompileBroker::compilation_is_complete(methodHandle method, | |
1069 int osr_bci, | |
1070 int comp_level) { | |
1071 bool is_osr = (osr_bci != standard_entry_bci); | |
1072 if (is_osr) { | |
1073 if (method->is_not_osr_compilable()) { | |
1074 return true; | |
1075 } else { | |
1783 | 1076 nmethod* result = method->lookup_osr_nmethod_for(osr_bci, comp_level, true); |
0 | 1077 return (result != NULL); |
1078 } | |
1079 } else { | |
1080 if (method->is_not_compilable(comp_level)) { | |
1081 return true; | |
1082 } else { | |
1083 nmethod* result = method->code(); | |
1084 if (result == NULL) return false; | |
1783 | 1085 return comp_level == result->comp_level(); |
0 | 1086 } |
1087 } | |
1088 } | |
1089 | |
1090 | |
1091 // ------------------------------------------------------------------ | |
1092 // CompileBroker::compilation_is_in_queue | |
1093 // | |
1094 // See if this compilation is already requested. | |
1095 // | |
1096 // Implementation note: there is only a single "is in queue" bit | |
1097 // for each method. This means that the check below is overly | |
1098 // conservative in the sense that an osr compilation in the queue | |
1099 // will block a normal compilation from entering the queue (and vice | |
1100 // versa). This can be remedied by a full queue search to disambiguate | |
1101 // cases. If it is deemed profitible, this may be done. | |
1102 bool CompileBroker::compilation_is_in_queue(methodHandle method, | |
1783 | 1103 int osr_bci) { |
0 | 1104 return method->queued_for_compilation(); |
1105 } | |
1106 | |
1107 // ------------------------------------------------------------------ | |
1108 // CompileBroker::compilation_is_prohibited | |
1109 // | |
1110 // See if this compilation is not allowed. | |
1111 bool CompileBroker::compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level) { | |
1112 bool is_native = method->is_native(); | |
1113 // Some compilers may not support the compilation of natives. | |
1114 if (is_native && | |
1115 (!CICompileNatives || !compiler(comp_level)->supports_native())) { | |
1783 | 1116 method->set_not_compilable_quietly(comp_level); |
0 | 1117 return true; |
1118 } | |
1119 | |
1120 bool is_osr = (osr_bci != standard_entry_bci); | |
1121 // Some compilers may not support on stack replacement. | |
1122 if (is_osr && | |
1123 (!CICompileOSR || !compiler(comp_level)->supports_osr())) { | |
1124 method->set_not_osr_compilable(); | |
1125 return true; | |
1126 } | |
1127 | |
1128 // The method may be explicitly excluded by the user. | |
1129 bool quietly; | |
1130 if (CompilerOracle::should_exclude(method, quietly)) { | |
1131 if (!quietly) { | |
1132 // This does not happen quietly... | |
1133 ResourceMark rm; | |
1134 tty->print("### Excluding %s:%s", | |
1135 method->is_native() ? "generation of native wrapper" : "compile", | |
1136 (method->is_static() ? " static" : "")); | |
1137 method->print_short_name(tty); | |
1138 tty->cr(); | |
1139 } | |
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1140 method->set_not_compilable_quietly(); |
0 | 1141 } |
1142 | |
1143 return false; | |
1144 } | |
1145 | |
1146 | |
1147 // ------------------------------------------------------------------ | |
1148 // CompileBroker::assign_compile_id | |
1149 // | |
1150 // Assign a serialized id number to this compilation request. If the | |
1151 // number falls out of the allowed range, return a 0. OSR | |
1152 // compilations may be numbered separately from regular compilations | |
1153 // if certain debugging flags are used. | |
1154 uint CompileBroker::assign_compile_id(methodHandle method, int osr_bci) { | |
1783 | 1155 assert(MethodCompileQueue_lock->owner() == Thread::current(), |
0 | 1156 "must hold the compilation queue lock"); |
1157 bool is_osr = (osr_bci != standard_entry_bci); | |
1158 assert(!method->is_native(), "no longer compile natives"); | |
1159 uint id; | |
1160 if (CICountOSR && is_osr) { | |
1161 id = ++_osr_compilation_id; | |
1162 if ((uint)CIStartOSR <= id && id < (uint)CIStopOSR) { | |
1163 return id; | |
1164 } | |
1165 } else { | |
1166 id = ++_compilation_id; | |
1167 if ((uint)CIStart <= id && id < (uint)CIStop) { | |
1168 return id; | |
1169 } | |
1170 } | |
1171 | |
1172 // Method was not in the appropriate compilation range. | |
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1173 method->set_not_compilable_quietly(); |
0 | 1174 return 0; |
1175 } | |
1176 | |
1177 | |
1178 // ------------------------------------------------------------------ | |
1179 // CompileBroker::is_compile_blocking | |
1180 // | |
1181 // Should the current thread be blocked until this compilation request | |
1182 // has been fulfilled? | |
1183 bool CompileBroker::is_compile_blocking(methodHandle method, int osr_bci) { | |
1184 return !BackgroundCompilation; | |
1185 } | |
1186 | |
1187 | |
1188 // ------------------------------------------------------------------ | |
1189 // CompileBroker::preload_classes | |
1190 void CompileBroker::preload_classes(methodHandle method, TRAPS) { | |
1191 // Move this code over from c1_Compiler.cpp | |
1192 ShouldNotReachHere(); | |
1193 } | |
1194 | |
1195 | |
1196 // ------------------------------------------------------------------ | |
1197 // CompileBroker::create_compile_task | |
1198 // | |
1199 // Create a CompileTask object representing the current request for | |
1200 // compilation. Add this task to the queue. | |
1201 CompileTask* CompileBroker::create_compile_task(CompileQueue* queue, | |
1202 int compile_id, | |
1203 methodHandle method, | |
1204 int osr_bci, | |
1205 int comp_level, | |
1206 methodHandle hot_method, | |
1207 int hot_count, | |
1208 const char* comment, | |
1209 bool blocking) { | |
1210 CompileTask* new_task = allocate_task(); | |
1211 new_task->initialize(compile_id, method, osr_bci, comp_level, | |
1212 hot_method, hot_count, comment, | |
1213 blocking); | |
1214 queue->add(new_task); | |
1215 return new_task; | |
1216 } | |
1217 | |
1218 | |
1219 // ------------------------------------------------------------------ | |
1220 // CompileBroker::allocate_task | |
1221 // | |
1222 // Allocate a CompileTask, from the free list if possible. | |
1223 CompileTask* CompileBroker::allocate_task() { | |
1224 MutexLocker locker(CompileTaskAlloc_lock); | |
1225 CompileTask* task = NULL; | |
1226 if (_task_free_list != NULL) { | |
1227 task = _task_free_list; | |
1228 _task_free_list = task->next(); | |
1229 task->set_next(NULL); | |
1230 } else { | |
1231 task = new CompileTask(); | |
1232 task->set_next(NULL); | |
1233 } | |
1234 return task; | |
1235 } | |
1236 | |
1237 | |
1238 // ------------------------------------------------------------------ | |
1239 // CompileBroker::free_task | |
1240 // | |
1241 // Add a task to the free list. | |
1242 void CompileBroker::free_task(CompileTask* task) { | |
1243 MutexLocker locker(CompileTaskAlloc_lock); | |
1244 task->free(); | |
1245 task->set_next(_task_free_list); | |
1246 _task_free_list = task; | |
1247 } | |
1248 | |
1249 | |
1250 // ------------------------------------------------------------------ | |
1251 // CompileBroker::wait_for_completion | |
1252 // | |
1253 // Wait for the given method CompileTask to complete. | |
1254 void CompileBroker::wait_for_completion(CompileTask* task) { | |
1255 if (CIPrintCompileQueue) { | |
1256 tty->print_cr("BLOCKING FOR COMPILE"); | |
1257 } | |
1258 | |
1259 assert(task->is_blocking(), "can only wait on blocking task"); | |
1260 | |
1261 JavaThread *thread = JavaThread::current(); | |
1262 thread->set_blocked_on_compilation(true); | |
1263 | |
1264 methodHandle method(thread, | |
1265 (methodOop)JNIHandles::resolve(task->method_handle())); | |
1266 { | |
1267 MutexLocker waiter(task->lock(), thread); | |
1268 | |
1269 while (!task->is_complete()) | |
1270 task->lock()->wait(); | |
1271 } | |
1272 // It is harmless to check this status without the lock, because | |
1273 // completion is a stable property (until the task object is recycled). | |
1274 assert(task->is_complete(), "Compilation should have completed"); | |
1275 assert(task->code_handle() == NULL, "must be reset"); | |
1276 | |
1277 thread->set_blocked_on_compilation(false); | |
1278 | |
1279 // By convention, the waiter is responsible for recycling a | |
1280 // blocking CompileTask. Since there is only one waiter ever | |
1281 // waiting on a CompileTask, we know that no one else will | |
1282 // be using this CompileTask; we can free it. | |
1283 free_task(task); | |
1284 } | |
1285 | |
1286 // ------------------------------------------------------------------ | |
1287 // CompileBroker::compiler_thread_loop | |
1288 // | |
1289 // The main loop run by a CompilerThread. | |
1290 void CompileBroker::compiler_thread_loop() { | |
1291 CompilerThread* thread = CompilerThread::current(); | |
1292 CompileQueue* queue = thread->queue(); | |
1293 | |
1294 // For the thread that initializes the ciObjectFactory | |
1295 // this resource mark holds all the shared objects | |
1296 ResourceMark rm; | |
1297 | |
1298 // First thread to get here will initialize the compiler interface | |
1299 | |
1300 if (!ciObjectFactory::is_initialized()) { | |
1301 ASSERT_IN_VM; | |
1302 MutexLocker only_one (CompileThread_lock, thread); | |
1303 if (!ciObjectFactory::is_initialized()) { | |
1304 ciObjectFactory::initialize(); | |
1305 } | |
1306 } | |
1307 | |
1308 // Open a log. | |
1309 if (LogCompilation) { | |
1310 init_compiler_thread_log(); | |
1311 } | |
1312 CompileLog* log = thread->log(); | |
1313 if (log != NULL) { | |
1314 log->begin_elem("start_compile_thread thread='" UINTX_FORMAT "' process='%d'", | |
1315 os::current_thread_id(), | |
1316 os::current_process_id()); | |
1317 log->stamp(); | |
1318 log->end_elem(); | |
1319 } | |
1320 | |
1321 while (true) { | |
1322 { | |
1323 // We need this HandleMark to avoid leaking VM handles. | |
1324 HandleMark hm(thread); | |
1202 | 1325 |
0 | 1326 if (CodeCache::unallocated_capacity() < CodeCacheMinimumFreeSpace) { |
1202 | 1327 // the code cache is really full |
1328 handle_full_code_cache(); | |
1329 } else if (UseCodeCacheFlushing && CodeCache::needs_flushing()) { | |
1330 // Attempt to start cleaning the code cache while there is still a little headroom | |
1331 NMethodSweeper::handle_full_code_cache(false); | |
0 | 1332 } |
1333 | |
1334 CompileTask* task = queue->get(); | |
1335 | |
1336 // Give compiler threads an extra quanta. They tend to be bursty and | |
1337 // this helps the compiler to finish up the job. | |
1338 if( CompilerThreadHintNoPreempt ) | |
1339 os::hint_no_preempt(); | |
1340 | |
1341 // trace per thread time and compile statistics | |
1342 CompilerCounters* counters = ((CompilerThread*)thread)->counters(); | |
1343 PerfTraceTimedEvent(counters->time_counter(), counters->compile_counter()); | |
1344 | |
1345 // Assign the task to the current thread. Mark this compilation | |
1346 // thread as active for the profiler. | |
1347 CompileTaskWrapper ctw(task); | |
1348 nmethodLocker result_handle; // (handle for the nmethod produced by this task) | |
1349 task->set_code_handle(&result_handle); | |
1350 methodHandle method(thread, | |
1351 (methodOop)JNIHandles::resolve(task->method_handle())); | |
1352 | |
1353 // Never compile a method if breakpoints are present in it | |
1354 if (method()->number_of_breakpoints() == 0) { | |
1355 // Compile the method. | |
1202 | 1356 if ((UseCompiler || AlwaysCompileLoopMethods) && CompileBroker::should_compile_new_jobs()) { |
0 | 1357 #ifdef COMPILER1 |
1358 // Allow repeating compilations for the purpose of benchmarking | |
1359 // compile speed. This is not useful for customers. | |
1360 if (CompilationRepeat != 0) { | |
1361 int compile_count = CompilationRepeat; | |
1362 while (compile_count > 0) { | |
1363 invoke_compiler_on_method(task); | |
1364 nmethod* nm = method->code(); | |
1365 if (nm != NULL) { | |
1366 nm->make_zombie(); | |
1367 method->clear_code(); | |
1368 } | |
1369 compile_count--; | |
1370 } | |
1371 } | |
1372 #endif /* COMPILER1 */ | |
1373 invoke_compiler_on_method(task); | |
1374 } else { | |
1375 // After compilation is disabled, remove remaining methods from queue | |
1376 method->clear_queued_for_compilation(); | |
1377 } | |
1378 } | |
1379 } | |
1380 } | |
1381 } | |
1382 | |
1383 | |
1384 // ------------------------------------------------------------------ | |
1385 // CompileBroker::init_compiler_thread_log | |
1386 // | |
1387 // Set up state required by +LogCompilation. | |
1388 void CompileBroker::init_compiler_thread_log() { | |
1389 CompilerThread* thread = CompilerThread::current(); | |
1390 char fileBuf[4*K]; | |
1391 FILE* fp = NULL; | |
1392 char* file = NULL; | |
1393 intx thread_id = os::current_thread_id(); | |
1394 for (int try_temp_dir = 1; try_temp_dir >= 0; try_temp_dir--) { | |
1395 const char* dir = (try_temp_dir ? os::get_temp_directory() : NULL); | |
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1396 if (dir == NULL) { |
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1397 jio_snprintf(fileBuf, sizeof(fileBuf), "hs_c" UINTX_FORMAT "_pid%u.log", |
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1398 thread_id, os::current_process_id()); |
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1399 } else { |
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1400 jio_snprintf(fileBuf, sizeof(fileBuf), |
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1401 "%s%shs_c" UINTX_FORMAT "_pid%u.log", dir, |
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1402 os::file_separator(), thread_id, os::current_process_id()); |
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1403 } |
0 | 1404 fp = fopen(fileBuf, "at"); |
1405 if (fp != NULL) { | |
1406 file = NEW_C_HEAP_ARRAY(char, strlen(fileBuf)+1); | |
1407 strcpy(file, fileBuf); | |
1408 break; | |
1409 } | |
1410 } | |
1411 if (fp == NULL) { | |
1412 warning("Cannot open log file: %s", fileBuf); | |
1413 } else { | |
1414 if (LogCompilation && Verbose) | |
1415 tty->print_cr("Opening compilation log %s", file); | |
1416 CompileLog* log = new(ResourceObj::C_HEAP) CompileLog(file, fp, thread_id); | |
1417 thread->init_log(log); | |
1418 | |
1419 if (xtty != NULL) { | |
1420 ttyLocker ttyl; | |
1421 | |
1422 // Record any per thread log files | |
1423 xtty->elem("thread_logfile thread='%d' filename='%s'", thread_id, file); | |
1424 } | |
1425 } | |
1426 } | |
1427 | |
1428 // ------------------------------------------------------------------ | |
1429 // CompileBroker::set_should_block | |
1430 // | |
1431 // Set _should_block. | |
1432 // Call this from the VM, with Threads_lock held and a safepoint requested. | |
1433 void CompileBroker::set_should_block() { | |
1434 assert(Threads_lock->owner() == Thread::current(), "must have threads lock"); | |
1435 assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint already"); | |
1436 #ifndef PRODUCT | |
1437 if (PrintCompilation && (Verbose || WizardMode)) | |
1438 tty->print_cr("notifying compiler thread pool to block"); | |
1439 #endif | |
1440 _should_block = true; | |
1441 } | |
1442 | |
1443 // ------------------------------------------------------------------ | |
1444 // CompileBroker::maybe_block | |
1445 // | |
1446 // Call this from the compiler at convenient points, to poll for _should_block. | |
1447 void CompileBroker::maybe_block() { | |
1448 if (_should_block) { | |
1449 #ifndef PRODUCT | |
1450 if (PrintCompilation && (Verbose || WizardMode)) | |
1451 tty->print_cr("compiler thread " INTPTR_FORMAT " poll detects block request", Thread::current()); | |
1452 #endif | |
1453 ThreadInVMfromNative tivfn(JavaThread::current()); | |
1454 } | |
1455 } | |
1456 | |
1457 | |
1458 // ------------------------------------------------------------------ | |
1459 // CompileBroker::invoke_compiler_on_method | |
1460 // | |
1461 // Compile a method. | |
1462 // | |
1463 void CompileBroker::invoke_compiler_on_method(CompileTask* task) { | |
1464 if (PrintCompilation) { | |
1465 ResourceMark rm; | |
1466 task->print_line(); | |
1467 } | |
1468 elapsedTimer time; | |
1469 | |
1470 CompilerThread* thread = CompilerThread::current(); | |
1471 ResourceMark rm(thread); | |
1472 | |
1473 // Common flags. | |
1474 uint compile_id = task->compile_id(); | |
1475 int osr_bci = task->osr_bci(); | |
1476 bool is_osr = (osr_bci != standard_entry_bci); | |
1477 bool should_log = (thread->log() != NULL); | |
1478 bool should_break = false; | |
1479 { | |
1480 // create the handle inside it's own block so it can't | |
1481 // accidentally be referenced once the thread transitions to | |
1482 // native. The NoHandleMark before the transition should catch | |
1483 // any cases where this occurs in the future. | |
1484 methodHandle method(thread, | |
1485 (methodOop)JNIHandles::resolve(task->method_handle())); | |
1486 should_break = check_break_at(method, compile_id, is_osr); | |
1487 if (should_log && !CompilerOracle::should_log(method)) { | |
1488 should_log = false; | |
1489 } | |
1490 assert(!method->is_native(), "no longer compile natives"); | |
1491 | |
1492 // Save information about this method in case of failure. | |
1493 set_last_compile(thread, method, is_osr, task->comp_level()); | |
1494 | |
1495 DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler(task->comp_level()), method); | |
1496 } | |
1497 | |
1498 // Allocate a new set of JNI handles. | |
1499 push_jni_handle_block(); | |
1500 jobject target_handle = JNIHandles::make_local(thread, JNIHandles::resolve(task->method_handle())); | |
1501 int compilable = ciEnv::MethodCompilable; | |
1502 { | |
1503 int system_dictionary_modification_counter; | |
1504 { | |
1505 MutexLocker locker(Compile_lock, thread); | |
1506 system_dictionary_modification_counter = SystemDictionary::number_of_modifications(); | |
1507 } | |
1508 | |
1509 NoHandleMark nhm; | |
1510 ThreadToNativeFromVM ttn(thread); | |
1511 | |
1512 ciEnv ci_env(task, system_dictionary_modification_counter); | |
1513 if (should_break) { | |
1514 ci_env.set_break_at_compile(true); | |
1515 } | |
1516 if (should_log) { | |
1517 ci_env.set_log(thread->log()); | |
1518 } | |
1519 assert(thread->env() == &ci_env, "set by ci_env"); | |
1520 // The thread-env() field is cleared in ~CompileTaskWrapper. | |
1521 | |
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1522 // Cache Jvmti state |
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1523 ci_env.cache_jvmti_state(); |
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1524 |
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1525 // Cache DTrace flags |
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1526 ci_env.cache_dtrace_flags(); |
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1527 |
0 | 1528 ciMethod* target = ci_env.get_method_from_handle(target_handle); |
1529 | |
1530 TraceTime t1("compilation", &time); | |
1531 | |
1532 compiler(task->comp_level())->compile_method(&ci_env, target, osr_bci); | |
1533 | |
1534 if (!ci_env.failing() && task->code() == NULL) { | |
1535 //assert(false, "compiler should always document failure"); | |
1536 // The compiler elected, without comment, not to register a result. | |
1537 // Do not attempt further compilations of this method. | |
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1538 ci_env.record_method_not_compilable("compile failed", !TieredCompilation); |
0 | 1539 } |
1540 | |
1541 if (ci_env.failing()) { | |
1542 // Copy this bit to the enclosing block: | |
1543 compilable = ci_env.compilable(); | |
1544 if (PrintCompilation) { | |
1545 const char* reason = ci_env.failure_reason(); | |
1546 if (compilable == ciEnv::MethodCompilable_not_at_tier) { | |
1547 tty->print_cr("%3d COMPILE SKIPPED: %s (retry at different tier)", compile_id, reason); | |
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1548 } else if (compilable == ciEnv::MethodCompilable_never) { |
0 | 1549 tty->print_cr("%3d COMPILE SKIPPED: %s (not retryable)", compile_id, reason); |
1550 } else if (compilable == ciEnv::MethodCompilable) { | |
1551 tty->print_cr("%3d COMPILE SKIPPED: %s", compile_id, reason); | |
1552 } | |
1553 } | |
1554 } else { | |
1555 task->mark_success(); | |
1556 task->set_num_inlined_bytecodes(ci_env.num_inlined_bytecodes()); | |
1557 } | |
1558 } | |
1559 pop_jni_handle_block(); | |
1560 | |
1561 methodHandle method(thread, | |
1562 (methodOop)JNIHandles::resolve(task->method_handle())); | |
1563 | |
1564 DTRACE_METHOD_COMPILE_END_PROBE(compiler(task->comp_level()), method, task->is_success()); | |
1565 | |
1566 collect_statistics(thread, time, task); | |
1567 | |
1568 if (compilable == ciEnv::MethodCompilable_never) { | |
1569 if (is_osr) { | |
1570 method->set_not_osr_compilable(); | |
1571 } else { | |
1208
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1572 method->set_not_compilable_quietly(); |
0 | 1573 } |
1574 } else if (compilable == ciEnv::MethodCompilable_not_at_tier) { | |
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1575 method->set_not_compilable_quietly(task->comp_level()); |
0 | 1576 } |
1577 | |
1578 // Note that the queued_for_compilation bits are cleared without | |
1579 // protection of a mutex. [They were set by the requester thread, | |
1580 // when adding the task to the complie queue -- at which time the | |
1581 // compile queue lock was held. Subsequently, we acquired the compile | |
1582 // queue lock to get this task off the compile queue; thus (to belabour | |
1583 // the point somewhat) our clearing of the bits must be occurring | |
1584 // only after the setting of the bits. See also 14012000 above. | |
1585 method->clear_queued_for_compilation(); | |
1586 | |
1587 #ifdef ASSERT | |
1588 if (CollectedHeap::fired_fake_oom()) { | |
1589 // The current compile received a fake OOM during compilation so | |
1590 // go ahead and exit the VM since the test apparently succeeded | |
1591 tty->print_cr("*** Shutting down VM after successful fake OOM"); | |
1592 vm_exit(0); | |
1593 } | |
1594 #endif | |
1595 } | |
1596 | |
1597 // ------------------------------------------------------------------ | |
1202 | 1598 // CompileBroker::handle_full_code_cache |
1599 // | |
1600 // The CodeCache is full. Print out warning and disable compilation or | |
1601 // try code cache cleaning so compilation can continue later. | |
1602 void CompileBroker::handle_full_code_cache() { | |
1603 UseInterpreter = true; | |
1604 if (UseCompiler || AlwaysCompileLoopMethods ) { | |
1728
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|
1605 if (xtty != NULL) { |
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parents:
1692
diff
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|
1606 xtty->begin_elem("code_cache_full"); |
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6976372: # assert(_owner == Thread::current()) failed: invariant
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parents:
1692
diff
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|
1607 xtty->stamp(); |
a62d332029cf
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parents:
1692
diff
changeset
|
1608 xtty->end_elem(); |
1202 | 1609 } |
1578
ca3dceda776c
6930994: Code cache is full warning should be visible in product
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1538
diff
changeset
|
1610 warning("CodeCache is full. Compiler has been disabled."); |
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parents:
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diff
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|
1611 warning("Try increasing the code cache size using -XX:ReservedCodeCacheSize="); |
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diff
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|
1612 #ifndef PRODUCT |
1202 | 1613 if (CompileTheWorld || ExitOnFullCodeCache) { |
1614 before_exit(JavaThread::current()); | |
1615 exit_globals(); // will delete tty | |
1616 vm_direct_exit(CompileTheWorld ? 0 : 1); | |
1617 } | |
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|
1618 #endif |
1202 | 1619 if (UseCodeCacheFlushing) { |
1620 NMethodSweeper::handle_full_code_cache(true); | |
1621 } else { | |
1622 UseCompiler = false; | |
1623 AlwaysCompileLoopMethods = false; | |
1624 } | |
1625 } | |
1626 } | |
1627 | |
1628 // ------------------------------------------------------------------ | |
0 | 1629 // CompileBroker::set_last_compile |
1630 // | |
1631 // Record this compilation for debugging purposes. | |
1632 void CompileBroker::set_last_compile(CompilerThread* thread, methodHandle method, bool is_osr, int comp_level) { | |
1633 ResourceMark rm; | |
1634 char* method_name = method->name()->as_C_string(); | |
1635 strncpy(_last_method_compiled, method_name, CompileBroker::name_buffer_length); | |
1636 char current_method[CompilerCounters::cmname_buffer_length]; | |
1637 size_t maxLen = CompilerCounters::cmname_buffer_length; | |
1638 | |
1639 if (UsePerfData) { | |
1640 const char* class_name = method->method_holder()->klass_part()->name()->as_C_string(); | |
1641 | |
1642 size_t s1len = strlen(class_name); | |
1643 size_t s2len = strlen(method_name); | |
1644 | |
1645 // check if we need to truncate the string | |
1646 if (s1len + s2len + 2 > maxLen) { | |
1647 | |
1648 // the strategy is to lop off the leading characters of the | |
1649 // class name and the trailing characters of the method name. | |
1650 | |
1651 if (s2len + 2 > maxLen) { | |
1652 // lop of the entire class name string, let snprintf handle | |
1653 // truncation of the method name. | |
1654 class_name += s1len; // null string | |
1655 } | |
1656 else { | |
1657 // lop off the extra characters from the front of the class name | |
1658 class_name += ((s1len + s2len + 2) - maxLen); | |
1659 } | |
1660 } | |
1661 | |
1662 jio_snprintf(current_method, maxLen, "%s %s", class_name, method_name); | |
1663 } | |
1664 | |
1665 if (CICountOSR && is_osr) { | |
1666 _last_compile_type = osr_compile; | |
1667 } else { | |
1668 _last_compile_type = normal_compile; | |
1669 } | |
1670 _last_compile_level = comp_level; | |
1671 | |
1672 if (UsePerfData) { | |
1673 CompilerCounters* counters = thread->counters(); | |
1674 counters->set_current_method(current_method); | |
1675 counters->set_compile_type((jlong)_last_compile_type); | |
1676 } | |
1677 } | |
1678 | |
1679 | |
1680 // ------------------------------------------------------------------ | |
1681 // CompileBroker::push_jni_handle_block | |
1682 // | |
1683 // Push on a new block of JNI handles. | |
1684 void CompileBroker::push_jni_handle_block() { | |
1685 JavaThread* thread = JavaThread::current(); | |
1686 | |
1687 // Allocate a new block for JNI handles. | |
1688 // Inlined code from jni_PushLocalFrame() | |
1689 JNIHandleBlock* java_handles = thread->active_handles(); | |
1690 JNIHandleBlock* compile_handles = JNIHandleBlock::allocate_block(thread); | |
1691 assert(compile_handles != NULL && java_handles != NULL, "should not be NULL"); | |
1692 compile_handles->set_pop_frame_link(java_handles); // make sure java handles get gc'd. | |
1693 thread->set_active_handles(compile_handles); | |
1694 } | |
1695 | |
1696 | |
1697 // ------------------------------------------------------------------ | |
1698 // CompileBroker::pop_jni_handle_block | |
1699 // | |
1700 // Pop off the current block of JNI handles. | |
1701 void CompileBroker::pop_jni_handle_block() { | |
1702 JavaThread* thread = JavaThread::current(); | |
1703 | |
1704 // Release our JNI handle block | |
1705 JNIHandleBlock* compile_handles = thread->active_handles(); | |
1706 JNIHandleBlock* java_handles = compile_handles->pop_frame_link(); | |
1707 thread->set_active_handles(java_handles); | |
1708 compile_handles->set_pop_frame_link(NULL); | |
1709 JNIHandleBlock::release_block(compile_handles, thread); // may block | |
1710 } | |
1711 | |
1712 | |
1713 // ------------------------------------------------------------------ | |
1714 // CompileBroker::check_break_at | |
1715 // | |
1716 // Should the compilation break at the current compilation. | |
1717 bool CompileBroker::check_break_at(methodHandle method, int compile_id, bool is_osr) { | |
1718 if (CICountOSR && is_osr && (compile_id == CIBreakAtOSR)) { | |
1719 return true; | |
1720 } else if( CompilerOracle::should_break_at(method) ) { // break when compiling | |
1721 return true; | |
1722 } else { | |
1723 return (compile_id == CIBreakAt); | |
1724 } | |
1725 } | |
1726 | |
1727 // ------------------------------------------------------------------ | |
1728 // CompileBroker::collect_statistics | |
1729 // | |
1730 // Collect statistics about the compilation. | |
1731 | |
1732 void CompileBroker::collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task) { | |
1733 bool success = task->is_success(); | |
1734 methodHandle method (thread, (methodOop)JNIHandles::resolve(task->method_handle())); | |
1735 uint compile_id = task->compile_id(); | |
1736 bool is_osr = (task->osr_bci() != standard_entry_bci); | |
1737 nmethod* code = task->code(); | |
1738 CompilerCounters* counters = thread->counters(); | |
1739 | |
1740 assert(code == NULL || code->is_locked_by_vm(), "will survive the MutexLocker"); | |
1741 MutexLocker locker(CompileStatistics_lock); | |
1742 | |
1743 // _perf variables are production performance counters which are | |
1744 // updated regardless of the setting of the CITime and CITimeEach flags | |
1745 // | |
1746 if (!success) { | |
1747 _total_bailout_count++; | |
1748 if (UsePerfData) { | |
1749 _perf_last_failed_method->set_value(counters->current_method()); | |
1750 _perf_last_failed_type->set_value(counters->compile_type()); | |
1751 _perf_total_bailout_count->inc(); | |
1752 } | |
1753 } else if (code == NULL) { | |
1754 if (UsePerfData) { | |
1755 _perf_last_invalidated_method->set_value(counters->current_method()); | |
1756 _perf_last_invalidated_type->set_value(counters->compile_type()); | |
1757 _perf_total_invalidated_count->inc(); | |
1758 } | |
1759 _total_invalidated_count++; | |
1760 } else { | |
1761 // Compilation succeeded | |
1762 | |
1763 // update compilation ticks - used by the implementation of | |
1764 // java.lang.management.CompilationMBean | |
1765 _perf_total_compilation->inc(time.ticks()); | |
1766 | |
1767 if (CITime) { | |
1768 _t_total_compilation.add(time); | |
1769 if (is_osr) { | |
1770 _t_osr_compilation.add(time); | |
1771 _sum_osr_bytes_compiled += method->code_size() + task->num_inlined_bytecodes(); | |
1772 } else { | |
1773 _t_standard_compilation.add(time); | |
1774 _sum_standard_bytes_compiled += method->code_size() + task->num_inlined_bytecodes(); | |
1775 } | |
1776 } | |
1777 | |
1778 if (UsePerfData) { | |
1779 // save the name of the last method compiled | |
1780 _perf_last_method->set_value(counters->current_method()); | |
1781 _perf_last_compile_type->set_value(counters->compile_type()); | |
1782 _perf_last_compile_size->set_value(method->code_size() + | |
1783 task->num_inlined_bytecodes()); | |
1784 if (is_osr) { | |
1785 _perf_osr_compilation->inc(time.ticks()); | |
1786 _perf_sum_osr_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes()); | |
1787 } else { | |
1788 _perf_standard_compilation->inc(time.ticks()); | |
1789 _perf_sum_standard_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes()); | |
1790 } | |
1791 } | |
1792 | |
1793 if (CITimeEach) { | |
1794 float bytes_per_sec = 1.0 * (method->code_size() + task->num_inlined_bytecodes()) / time.seconds(); | |
1795 tty->print_cr("%3d seconds: %f bytes/sec : %f (bytes %d + %d inlined)", | |
1796 compile_id, time.seconds(), bytes_per_sec, method->code_size(), task->num_inlined_bytecodes()); | |
1797 } | |
1798 | |
1799 // Collect counts of successful compilations | |
1748 | 1800 _sum_nmethod_size += code->total_size(); |
1801 _sum_nmethod_code_size += code->insts_size(); | |
0 | 1802 _total_compile_count++; |
1803 | |
1804 if (UsePerfData) { | |
1748 | 1805 _perf_sum_nmethod_size->inc( code->total_size()); |
1806 _perf_sum_nmethod_code_size->inc(code->insts_size()); | |
0 | 1807 _perf_total_compile_count->inc(); |
1808 } | |
1809 | |
1810 if (is_osr) { | |
1811 if (UsePerfData) _perf_total_osr_compile_count->inc(); | |
1812 _total_osr_compile_count++; | |
1813 } else { | |
1814 if (UsePerfData) _perf_total_standard_compile_count->inc(); | |
1815 _total_standard_compile_count++; | |
1816 } | |
1817 } | |
1818 // set the current method for the thread to null | |
1819 if (UsePerfData) counters->set_current_method(""); | |
1820 } | |
1821 | |
1822 | |
1823 | |
1824 void CompileBroker::print_times() { | |
1825 tty->cr(); | |
1826 tty->print_cr("Accumulated compiler times (for compiled methods only)"); | |
1827 tty->print_cr("------------------------------------------------"); | |
1828 //0000000000111111111122222222223333333333444444444455555555556666666666 | |
1829 //0123456789012345678901234567890123456789012345678901234567890123456789 | |
1830 tty->print_cr(" Total compilation time : %6.3f s", CompileBroker::_t_total_compilation.seconds()); | |
1831 tty->print_cr(" Standard compilation : %6.3f s, Average : %2.3f", | |
1832 CompileBroker::_t_standard_compilation.seconds(), | |
1833 CompileBroker::_t_standard_compilation.seconds() / CompileBroker::_total_standard_compile_count); | |
1834 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 | 1835 |
1783 | 1836 if (compiler(CompLevel_simple) != NULL) { |
1837 compiler(CompLevel_simple)->print_timers(); | |
0 | 1838 } |
1783 | 1839 if (compiler(CompLevel_full_optimization) != NULL) { |
1840 compiler(CompLevel_full_optimization)->print_timers(); | |
1841 } | |
0 | 1842 tty->cr(); |
1843 int tcb = CompileBroker::_sum_osr_bytes_compiled + CompileBroker::_sum_standard_bytes_compiled; | |
1844 tty->print_cr(" Total compiled bytecodes : %6d bytes", tcb); | |
1845 tty->print_cr(" Standard compilation : %6d bytes", CompileBroker::_sum_standard_bytes_compiled); | |
1846 tty->print_cr(" On stack replacement : %6d bytes", CompileBroker::_sum_osr_bytes_compiled); | |
1847 int bps = (int)(tcb / CompileBroker::_t_total_compilation.seconds()); | |
1848 tty->print_cr(" Average compilation speed: %6d bytes/s", bps); | |
1849 tty->cr(); | |
1850 tty->print_cr(" nmethod code size : %6d bytes", CompileBroker::_sum_nmethod_code_size); | |
1851 tty->print_cr(" nmethod total size : %6d bytes", CompileBroker::_sum_nmethod_size); | |
1852 } | |
1853 | |
1854 | |
1855 // Debugging output for failure | |
1856 void CompileBroker::print_last_compile() { | |
1857 if ( _last_compile_level != CompLevel_none && | |
1858 compiler(_last_compile_level) != NULL && | |
1859 _last_method_compiled != NULL && | |
1860 _last_compile_type != no_compile) { | |
1861 if (_last_compile_type == osr_compile) { | |
1862 tty->print_cr("Last parse: [osr]%d+++(%d) %s", | |
1863 _osr_compilation_id, _last_compile_level, _last_method_compiled); | |
1864 } else { | |
1865 tty->print_cr("Last parse: %d+++(%d) %s", | |
1866 _compilation_id, _last_compile_level, _last_method_compiled); | |
1867 } | |
1868 } | |
1869 } | |
1870 | |
1871 | |
1872 void CompileBroker::print_compiler_threads_on(outputStream* st) { | |
1873 #ifndef PRODUCT | |
1874 st->print_cr("Compiler thread printing unimplemented."); | |
1875 st->cr(); | |
1876 #endif | |
1877 } |