Mercurial > hg > graal-compiler
annotate src/share/vm/compiler/compileBroker.cpp @ 1751:2528b5bd749c
6980262: Memory leak when exception is thrown in static initializer
Summary: Use resource memory instead of c-heap for the exception message
Reviewed-by: phh, jmasa
author | kamg |
---|---|
date | Fri, 27 Aug 2010 15:05:28 -0400 |
parents | a62d332029cf |
children | 3e8fbc61cee8 |
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 | |
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() { | |
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464 NMethodSweeper::possibly_sweep(); |
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465 |
0 | 466 MutexLocker locker(lock()); |
467 | |
468 // Wait for an available CompileTask. | |
469 while (_first == NULL) { | |
470 // There is no work to be done right now. Wait. | |
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471 if (UseCodeCacheFlushing && (!CompileBroker::should_compile_new_jobs() || CodeCache::needs_flushing())) { |
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472 // During the emergency sweeping periods, wake up and sweep occasionally |
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473 bool timedout = lock()->wait(!Mutex::_no_safepoint_check_flag, NmethodSweepCheckInterval*1000); |
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474 if (timedout) { |
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475 MutexUnlocker ul(lock()); |
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476 // When otherwise not busy, run nmethod sweeping |
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477 NMethodSweeper::possibly_sweep(); |
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478 } |
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479 } else { |
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480 // During normal operation no need to wake up on timer |
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481 lock()->wait(); |
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482 } |
0 | 483 } |
484 | |
485 CompileTask* task = _first; | |
486 | |
487 // Update queue first and last | |
488 _first =_first->next(); | |
489 if (_first == NULL) { | |
490 _last = NULL; | |
491 } | |
492 | |
493 return task; | |
494 | |
495 } | |
496 | |
497 | |
498 // ------------------------------------------------------------------ | |
499 // CompileQueue::print | |
500 void CompileQueue::print() { | |
501 tty->print_cr("Contents of %s", name()); | |
502 tty->print_cr("----------------------"); | |
503 CompileTask* task = _first; | |
504 while (task != NULL) { | |
505 task->print_line(); | |
506 task = task->next(); | |
507 } | |
508 tty->print_cr("----------------------"); | |
509 } | |
510 | |
511 CompilerCounters::CompilerCounters(const char* thread_name, int instance, TRAPS) { | |
512 | |
513 _current_method[0] = '\0'; | |
514 _compile_type = CompileBroker::no_compile; | |
515 | |
516 if (UsePerfData) { | |
517 ResourceMark rm; | |
518 | |
519 // create the thread instance name space string - don't create an | |
520 // instance subspace if instance is -1 - keeps the adapterThread | |
521 // counters from having a ".0" namespace. | |
522 const char* thread_i = (instance == -1) ? thread_name : | |
523 PerfDataManager::name_space(thread_name, instance); | |
524 | |
525 | |
526 char* name = PerfDataManager::counter_name(thread_i, "method"); | |
527 _perf_current_method = | |
528 PerfDataManager::create_string_variable(SUN_CI, name, | |
529 cmname_buffer_length, | |
530 _current_method, CHECK); | |
531 | |
532 name = PerfDataManager::counter_name(thread_i, "type"); | |
533 _perf_compile_type = PerfDataManager::create_variable(SUN_CI, name, | |
534 PerfData::U_None, | |
535 (jlong)_compile_type, | |
536 CHECK); | |
537 | |
538 name = PerfDataManager::counter_name(thread_i, "time"); | |
539 _perf_time = PerfDataManager::create_counter(SUN_CI, name, | |
540 PerfData::U_Ticks, CHECK); | |
541 | |
542 name = PerfDataManager::counter_name(thread_i, "compiles"); | |
543 _perf_compiles = PerfDataManager::create_counter(SUN_CI, name, | |
544 PerfData::U_Events, CHECK); | |
545 } | |
546 } | |
547 | |
548 | |
549 // ------------------------------------------------------------------ | |
550 // CompileBroker::compilation_init | |
551 // | |
552 // Initialize the Compilation object | |
553 void CompileBroker::compilation_init() { | |
554 _last_method_compiled[0] = '\0'; | |
555 | |
556 // Set the interface to the current compiler(s). | |
557 #ifdef COMPILER1 | |
558 _compilers[0] = new Compiler(); | |
559 #ifndef COMPILER2 | |
560 _compilers[1] = _compilers[0]; | |
561 #endif | |
562 #endif // COMPILER1 | |
563 | |
564 #ifdef COMPILER2 | |
565 _compilers[1] = new C2Compiler(); | |
566 #ifndef COMPILER1 | |
567 _compilers[0] = _compilers[1]; | |
568 #endif | |
569 #endif // COMPILER2 | |
570 | |
1692 | 571 #ifdef SHARK |
572 #if defined(COMPILER1) || defined(COMPILER2) | |
573 #error "Can't use COMPILER1 or COMPILER2 with shark" | |
574 #endif | |
575 _compilers[0] = new SharkCompiler(); | |
576 _compilers[1] = _compilers[0]; | |
577 #endif | |
578 | |
0 | 579 // Initialize the CompileTask free list |
580 _task_free_list = NULL; | |
581 | |
582 // Start the CompilerThreads | |
583 init_compiler_threads(compiler_count()); | |
584 | |
585 | |
586 // totalTime performance counter is always created as it is required | |
587 // by the implementation of java.lang.management.CompilationMBean. | |
588 { | |
589 EXCEPTION_MARK; | |
590 _perf_total_compilation = | |
591 PerfDataManager::create_counter(JAVA_CI, "totalTime", | |
592 PerfData::U_Ticks, CHECK); | |
593 } | |
594 | |
595 | |
596 if (UsePerfData) { | |
597 | |
598 EXCEPTION_MARK; | |
599 | |
600 // create the jvmstat performance counters | |
601 _perf_osr_compilation = | |
602 PerfDataManager::create_counter(SUN_CI, "osrTime", | |
603 PerfData::U_Ticks, CHECK); | |
604 | |
605 _perf_standard_compilation = | |
606 PerfDataManager::create_counter(SUN_CI, "standardTime", | |
607 PerfData::U_Ticks, CHECK); | |
608 | |
609 _perf_total_bailout_count = | |
610 PerfDataManager::create_counter(SUN_CI, "totalBailouts", | |
611 PerfData::U_Events, CHECK); | |
612 | |
613 _perf_total_invalidated_count = | |
614 PerfDataManager::create_counter(SUN_CI, "totalInvalidates", | |
615 PerfData::U_Events, CHECK); | |
616 | |
617 _perf_total_compile_count = | |
618 PerfDataManager::create_counter(SUN_CI, "totalCompiles", | |
619 PerfData::U_Events, CHECK); | |
620 _perf_total_osr_compile_count = | |
621 PerfDataManager::create_counter(SUN_CI, "osrCompiles", | |
622 PerfData::U_Events, CHECK); | |
623 | |
624 _perf_total_standard_compile_count = | |
625 PerfDataManager::create_counter(SUN_CI, "standardCompiles", | |
626 PerfData::U_Events, CHECK); | |
627 | |
628 _perf_sum_osr_bytes_compiled = | |
629 PerfDataManager::create_counter(SUN_CI, "osrBytes", | |
630 PerfData::U_Bytes, CHECK); | |
631 | |
632 _perf_sum_standard_bytes_compiled = | |
633 PerfDataManager::create_counter(SUN_CI, "standardBytes", | |
634 PerfData::U_Bytes, CHECK); | |
635 | |
636 _perf_sum_nmethod_size = | |
637 PerfDataManager::create_counter(SUN_CI, "nmethodSize", | |
638 PerfData::U_Bytes, CHECK); | |
639 | |
640 _perf_sum_nmethod_code_size = | |
641 PerfDataManager::create_counter(SUN_CI, "nmethodCodeSize", | |
642 PerfData::U_Bytes, CHECK); | |
643 | |
644 _perf_last_method = | |
645 PerfDataManager::create_string_variable(SUN_CI, "lastMethod", | |
646 CompilerCounters::cmname_buffer_length, | |
647 "", CHECK); | |
648 | |
649 _perf_last_failed_method = | |
650 PerfDataManager::create_string_variable(SUN_CI, "lastFailedMethod", | |
651 CompilerCounters::cmname_buffer_length, | |
652 "", CHECK); | |
653 | |
654 _perf_last_invalidated_method = | |
655 PerfDataManager::create_string_variable(SUN_CI, "lastInvalidatedMethod", | |
656 CompilerCounters::cmname_buffer_length, | |
657 "", CHECK); | |
658 | |
659 _perf_last_compile_type = | |
660 PerfDataManager::create_variable(SUN_CI, "lastType", | |
661 PerfData::U_None, | |
662 (jlong)CompileBroker::no_compile, | |
663 CHECK); | |
664 | |
665 _perf_last_compile_size = | |
666 PerfDataManager::create_variable(SUN_CI, "lastSize", | |
667 PerfData::U_Bytes, | |
668 (jlong)CompileBroker::no_compile, | |
669 CHECK); | |
670 | |
671 | |
672 _perf_last_failed_type = | |
673 PerfDataManager::create_variable(SUN_CI, "lastFailedType", | |
674 PerfData::U_None, | |
675 (jlong)CompileBroker::no_compile, | |
676 CHECK); | |
677 | |
678 _perf_last_invalidated_type = | |
679 PerfDataManager::create_variable(SUN_CI, "lastInvalidatedType", | |
680 PerfData::U_None, | |
681 (jlong)CompileBroker::no_compile, | |
682 CHECK); | |
683 } | |
684 | |
685 _initialized = true; | |
686 } | |
687 | |
688 | |
689 | |
690 // ------------------------------------------------------------------ | |
691 // CompileBroker::make_compiler_thread | |
692 CompilerThread* CompileBroker::make_compiler_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, TRAPS) { | |
693 CompilerThread* compiler_thread = NULL; | |
694 | |
695 klassOop k = | |
696 SystemDictionary::resolve_or_fail(vmSymbolHandles::java_lang_Thread(), | |
697 true, CHECK_0); | |
698 instanceKlassHandle klass (THREAD, k); | |
699 instanceHandle thread_oop = klass->allocate_instance_handle(CHECK_0); | |
700 Handle string = java_lang_String::create_from_str(name, CHECK_0); | |
701 | |
702 // Initialize thread_oop to put it into the system threadGroup | |
703 Handle thread_group (THREAD, Universe::system_thread_group()); | |
704 JavaValue result(T_VOID); | |
705 JavaCalls::call_special(&result, thread_oop, | |
706 klass, | |
707 vmSymbolHandles::object_initializer_name(), | |
708 vmSymbolHandles::threadgroup_string_void_signature(), | |
709 thread_group, | |
710 string, | |
711 CHECK_0); | |
712 | |
713 { | |
714 MutexLocker mu(Threads_lock, THREAD); | |
715 compiler_thread = new CompilerThread(queue, counters); | |
716 // At this point the new CompilerThread data-races with this startup | |
717 // thread (which I believe is the primoridal thread and NOT the VM | |
718 // thread). This means Java bytecodes being executed at startup can | |
719 // queue compile jobs which will run at whatever default priority the | |
720 // newly created CompilerThread runs at. | |
721 | |
722 | |
723 // At this point it may be possible that no osthread was created for the | |
724 // JavaThread due to lack of memory. We would have to throw an exception | |
725 // in that case. However, since this must work and we do not allow | |
726 // exceptions anyway, check and abort if this fails. | |
727 | |
728 if (compiler_thread == NULL || compiler_thread->osthread() == NULL){ | |
729 vm_exit_during_initialization("java.lang.OutOfMemoryError", | |
730 "unable to create new native thread"); | |
731 } | |
732 | |
733 java_lang_Thread::set_thread(thread_oop(), compiler_thread); | |
734 | |
735 // Note that this only sets the JavaThread _priority field, which by | |
736 // definition is limited to Java priorities and not OS priorities. | |
737 // The os-priority is set in the CompilerThread startup code itself | |
738 java_lang_Thread::set_priority(thread_oop(), NearMaxPriority); | |
739 // CLEANUP PRIORITIES: This -if- statement hids a bug whereby the compiler | |
740 // threads never have their OS priority set. The assumption here is to | |
741 // enable the Performance group to do flag tuning, figure out a suitable | |
742 // CompilerThreadPriority, and then remove this 'if' statement (and | |
743 // comment) and unconditionally set the priority. | |
744 | |
745 // Compiler Threads should be at the highest Priority | |
746 if ( CompilerThreadPriority != -1 ) | |
747 os::set_native_priority( compiler_thread, CompilerThreadPriority ); | |
748 else | |
749 os::set_native_priority( compiler_thread, os::java_to_os_priority[NearMaxPriority]); | |
750 | |
751 // Note that I cannot call os::set_priority because it expects Java | |
752 // priorities and I am *explicitly* using OS priorities so that it's | |
753 // possible to set the compiler thread priority higher than any Java | |
754 // thread. | |
755 | |
756 java_lang_Thread::set_daemon(thread_oop()); | |
757 | |
758 compiler_thread->set_threadObj(thread_oop()); | |
759 Threads::add(compiler_thread); | |
760 Thread::start(compiler_thread); | |
761 } | |
762 // Let go of Threads_lock before yielding | |
763 os::yield(); // make sure that the compiler thread is started early (especially helpful on SOLARIS) | |
764 | |
765 return compiler_thread; | |
766 } | |
767 | |
768 | |
769 // ------------------------------------------------------------------ | |
770 // CompileBroker::init_compiler_threads | |
771 // | |
772 // Initialize the compilation queue | |
773 void CompileBroker::init_compiler_threads(int compiler_count) { | |
774 EXCEPTION_MARK; | |
775 | |
776 _method_queue = new CompileQueue("MethodQueue", MethodCompileQueue_lock); | |
777 _method_threads = | |
778 new (ResourceObj::C_HEAP) GrowableArray<CompilerThread*>(compiler_count, true); | |
779 | |
780 char name_buffer[256]; | |
781 int i; | |
782 for (i = 0; i < compiler_count; i++) { | |
783 // Create a name for our thread. | |
784 sprintf(name_buffer, "CompilerThread%d", i); | |
785 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK); | |
786 | |
787 CompilerThread* new_thread = make_compiler_thread(name_buffer, _method_queue, counters, CHECK); | |
788 _method_threads->append(new_thread); | |
789 } | |
790 if (UsePerfData) { | |
791 PerfDataManager::create_constant(SUN_CI, "threads", PerfData::U_Bytes, | |
792 compiler_count, CHECK); | |
793 } | |
794 } | |
795 | |
796 // ------------------------------------------------------------------ | |
797 // CompileBroker::is_idle | |
798 bool CompileBroker::is_idle() { | |
799 if (!_method_queue->is_empty()) { | |
800 return false; | |
801 } else { | |
802 int num_threads = _method_threads->length(); | |
803 for (int i=0; i<num_threads; i++) { | |
804 if (_method_threads->at(i)->task() != NULL) { | |
805 return false; | |
806 } | |
807 } | |
808 | |
809 // No pending or active compilations. | |
810 return true; | |
811 } | |
812 } | |
813 | |
814 | |
815 // ------------------------------------------------------------------ | |
816 // CompileBroker::compile_method | |
817 // | |
818 // Request compilation of a method. | |
819 void CompileBroker::compile_method_base(methodHandle method, | |
820 int osr_bci, | |
821 int comp_level, | |
822 methodHandle hot_method, | |
823 int hot_count, | |
824 const char* comment, | |
825 TRAPS) { | |
826 // do nothing if compiler thread(s) is not available | |
827 if (!_initialized ) { | |
828 return; | |
829 } | |
830 | |
831 guarantee(!method->is_abstract(), "cannot compile abstract methods"); | |
832 assert(method->method_holder()->klass_part()->oop_is_instance(), | |
833 "sanity check"); | |
834 assert(!instanceKlass::cast(method->method_holder())->is_not_initialized(), | |
835 "method holder must be initialized"); | |
836 | |
837 if (CIPrintRequests) { | |
838 tty->print("request: "); | |
839 method->print_short_name(tty); | |
840 if (osr_bci != InvocationEntryBci) { | |
841 tty->print(" osr_bci: %d", osr_bci); | |
842 } | |
843 tty->print(" comment: %s count: %d", comment, hot_count); | |
844 if (!hot_method.is_null()) { | |
845 tty->print(" hot: "); | |
846 if (hot_method() != method()) { | |
847 hot_method->print_short_name(tty); | |
848 } else { | |
849 tty->print("yes"); | |
850 } | |
851 } | |
852 tty->cr(); | |
853 } | |
854 | |
855 // A request has been made for compilation. Before we do any | |
856 // real work, check to see if the method has been compiled | |
857 // in the meantime with a definitive result. | |
858 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
859 return; | |
860 } | |
861 | |
862 // If this method is already in the compile queue, then | |
863 // we do not block the current thread. | |
864 if (compilation_is_in_queue(method, osr_bci)) { | |
865 // We may want to decay our counter a bit here to prevent | |
866 // multiple denied requests for compilation. This is an | |
867 // open compilation policy issue. Note: The other possibility, | |
868 // in the case that this is a blocking compile request, is to have | |
869 // all subsequent blocking requesters wait for completion of | |
870 // ongoing compiles. Note that in this case we'll need a protocol | |
871 // for freeing the associated compile tasks. [Or we could have | |
872 // a single static monitor on which all these waiters sleep.] | |
873 return; | |
874 } | |
875 | |
876 // Outputs from the following MutexLocker block: | |
877 CompileTask* task = NULL; | |
878 bool blocking = false; | |
879 | |
880 // Acquire our lock. | |
881 { | |
882 MutexLocker locker(_method_queue->lock(), THREAD); | |
883 | |
884 // Make sure the method has not slipped into the queues since | |
885 // last we checked; note that those checks were "fast bail-outs". | |
886 // Here we need to be more careful, see 14012000 below. | |
887 if (compilation_is_in_queue(method, osr_bci)) { | |
888 return; | |
889 } | |
890 | |
891 // We need to check again to see if the compilation has | |
892 // completed. A previous compilation may have registered | |
893 // some result. | |
894 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
895 return; | |
896 } | |
897 | |
898 // We now know that this compilation is not pending, complete, | |
899 // or prohibited. Assign a compile_id to this compilation | |
900 // and check to see if it is in our [Start..Stop) range. | |
901 uint compile_id = assign_compile_id(method, osr_bci); | |
902 if (compile_id == 0) { | |
903 // The compilation falls outside the allowed range. | |
904 return; | |
905 } | |
906 | |
907 // Should this thread wait for completion of the compile? | |
908 blocking = is_compile_blocking(method, osr_bci); | |
909 | |
910 // We will enter the compilation in the queue. | |
911 // 14012000: Note that this sets the queued_for_compile bits in | |
912 // the target method. We can now reason that a method cannot be | |
913 // queued for compilation more than once, as follows: | |
914 // Before a thread queues a task for compilation, it first acquires | |
915 // the compile queue lock, then checks if the method's queued bits | |
916 // are set or it has already been compiled. Thus there can not be two | |
917 // instances of a compilation task for the same method on the | |
918 // compilation queue. Consider now the case where the compilation | |
919 // thread has already removed a task for that method from the queue | |
920 // and is in the midst of compiling it. In this case, the | |
921 // queued_for_compile bits must be set in the method (and these | |
922 // will be visible to the current thread, since the bits were set | |
923 // under protection of the compile queue lock, which we hold now. | |
924 // When the compilation completes, the compiler thread first sets | |
925 // the compilation result and then clears the queued_for_compile | |
926 // bits. Neither of these actions are protected by a barrier (or done | |
927 // under the protection of a lock), so the only guarantee we have | |
928 // (on machines with TSO (Total Store Order)) is that these values | |
929 // will update in that order. As a result, the only combinations of | |
930 // these bits that the current thread will see are, in temporal order: | |
931 // <RESULT, QUEUE> : | |
932 // <0, 1> : in compile queue, but not yet compiled | |
933 // <1, 1> : compiled but queue bit not cleared | |
934 // <1, 0> : compiled and queue bit cleared | |
935 // Because we first check the queue bits then check the result bits, | |
936 // we are assured that we cannot introduce a duplicate task. | |
937 // Note that if we did the tests in the reverse order (i.e. check | |
938 // result then check queued bit), we could get the result bit before | |
939 // the compilation completed, and the queue bit after the compilation | |
940 // completed, and end up introducing a "duplicate" (redundant) task. | |
941 // In that case, the compiler thread should first check if a method | |
942 // has already been compiled before trying to compile it. | |
943 // NOTE: in the event that there are multiple compiler threads and | |
944 // there is de-optimization/recompilation, things will get hairy, | |
945 // and in that case it's best to protect both the testing (here) of | |
946 // these bits, and their updating (here and elsewhere) under a | |
947 // common lock. | |
948 task = create_compile_task(_method_queue, | |
949 compile_id, method, | |
950 osr_bci, comp_level, | |
951 hot_method, hot_count, comment, | |
952 blocking); | |
953 } | |
954 | |
955 if (blocking) { | |
956 wait_for_completion(task); | |
957 } | |
958 } | |
959 | |
960 | |
961 nmethod* CompileBroker::compile_method(methodHandle method, int osr_bci, | |
962 methodHandle hot_method, int hot_count, | |
963 const char* comment, TRAPS) { | |
964 // make sure arguments make sense | |
965 assert(method->method_holder()->klass_part()->oop_is_instance(), "not an instance method"); | |
966 assert(osr_bci == InvocationEntryBci || (0 <= osr_bci && osr_bci < method->code_size()), "bci out of range"); | |
967 assert(!method->is_abstract() && (osr_bci == InvocationEntryBci || !method->is_native()), "cannot compile abstract/native methods"); | |
968 assert(!instanceKlass::cast(method->method_holder())->is_not_initialized(), "method holder must be initialized"); | |
969 | |
970 int comp_level = CompilationPolicy::policy()->compilation_level(method, osr_bci); | |
971 | |
972 #ifdef TIERED | |
973 if (TieredCompilation && StressTieredRuntime) { | |
974 static int flipper = 0; | |
975 if (is_even(flipper++)) { | |
976 comp_level = CompLevel_fast_compile; | |
977 } else { | |
978 comp_level = CompLevel_full_optimization; | |
979 } | |
980 } | |
981 #ifdef SPARC | |
982 // QQQ FIX ME | |
983 // C2 only returns long results in G1 and c1 doesn't understand so disallow c2 | |
984 // compiles of long results | |
985 if (TieredCompilation && method()->result_type() == T_LONG) { | |
986 comp_level = CompLevel_fast_compile; | |
987 } | |
988 #endif // SPARC | |
989 #endif // TIERED | |
990 | |
991 // return quickly if possible | |
992 | |
993 // lock, make sure that the compilation | |
994 // isn't prohibited in a straightforward way. | |
995 | |
996 if (compiler(comp_level) == NULL || compilation_is_prohibited(method, osr_bci, comp_level)) { | |
997 return NULL; | |
998 } | |
999 | |
1000 if (osr_bci == InvocationEntryBci) { | |
1001 // standard compilation | |
1002 nmethod* method_code = method->code(); | |
1003 if (method_code != NULL | |
1004 #ifdef TIERED | |
1005 && ( method_code->is_compiled_by_c2() || comp_level == CompLevel_fast_compile ) | |
1006 #endif // TIERED | |
1007 ) { | |
1008 return method_code; | |
1009 } | |
1010 if (method->is_not_compilable(comp_level)) return NULL; | |
1202 | 1011 |
1300
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1012 if (UseCodeCacheFlushing) { |
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1013 nmethod* saved = CodeCache::find_and_remove_saved_code(method()); |
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1014 if (saved != NULL) { |
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1015 method->set_code(method, saved); |
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1016 return saved; |
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1017 } |
1202 | 1018 } |
1019 | |
0 | 1020 } else { |
1021 // osr compilation | |
1022 #ifndef TIERED | |
1023 // seems like an assert of dubious value | |
1024 assert(comp_level == CompLevel_full_optimization, | |
1025 "all OSR compiles are assumed to be at a single compilation lavel"); | |
1026 #endif // TIERED | |
1027 nmethod* nm = method->lookup_osr_nmethod_for(osr_bci); | |
1028 if (nm != NULL) return nm; | |
1029 if (method->is_not_osr_compilable()) return NULL; | |
1030 } | |
1031 | |
1032 assert(!HAS_PENDING_EXCEPTION, "No exception should be present"); | |
1033 // some prerequisites that are compiler specific | |
1034 if (compiler(comp_level)->is_c2()) { | |
1035 method->constants()->resolve_string_constants(CHECK_0); | |
1036 // Resolve all classes seen in the signature of the method | |
1037 // we are compiling. | |
1038 methodOopDesc::load_signature_classes(method, CHECK_0); | |
1039 } | |
1040 | |
1041 // If the method is native, do the lookup in the thread requesting | |
1042 // the compilation. Native lookups can load code, which is not | |
1043 // permitted during compilation. | |
1044 // | |
1045 // Note: A native method implies non-osr compilation which is | |
1046 // checked with an assertion at the entry of this method. | |
1047 if (method->is_native()) { | |
1048 bool in_base_library; | |
1049 address adr = NativeLookup::lookup(method, in_base_library, THREAD); | |
1050 if (HAS_PENDING_EXCEPTION) { | |
1051 // In case of an exception looking up the method, we just forget | |
1052 // about it. The interpreter will kick-in and throw the exception. | |
1053 method->set_not_compilable(); // implies is_not_osr_compilable() | |
1054 CLEAR_PENDING_EXCEPTION; | |
1055 return NULL; | |
1056 } | |
1057 assert(method->has_native_function(), "must have native code by now"); | |
1058 } | |
1059 | |
1060 // RedefineClasses() has replaced this method; just return | |
1061 if (method->is_old()) { | |
1062 return NULL; | |
1063 } | |
1064 | |
1065 // JVMTI -- post_compile_event requires jmethod_id() that may require | |
1066 // a lock the compiling thread can not acquire. Prefetch it here. | |
1067 if (JvmtiExport::should_post_compiled_method_load()) { | |
1068 method->jmethod_id(); | |
1069 } | |
1070 | |
1202 | 1071 // If the compiler is shut off due to code cache flushing or otherwise, |
1072 // fail out now so blocking compiles dont hang the java thread | |
1073 if (!should_compile_new_jobs() || (UseCodeCacheFlushing && CodeCache::needs_flushing())) { | |
1074 method->invocation_counter()->decay(); | |
1075 method->backedge_counter()->decay(); | |
1076 return NULL; | |
1077 } | |
1078 | |
0 | 1079 // do the compilation |
1080 if (method->is_native()) { | |
1081 if (!PreferInterpreterNativeStubs) { | |
1082 (void) AdapterHandlerLibrary::create_native_wrapper(method); | |
1083 } else { | |
1084 return NULL; | |
1085 } | |
1086 } else { | |
1087 compile_method_base(method, osr_bci, comp_level, hot_method, hot_count, comment, CHECK_0); | |
1088 } | |
1089 | |
1090 // return requested nmethod | |
1091 return osr_bci == InvocationEntryBci ? method->code() : method->lookup_osr_nmethod_for(osr_bci); | |
1092 } | |
1093 | |
1094 | |
1095 // ------------------------------------------------------------------ | |
1096 // CompileBroker::compilation_is_complete | |
1097 // | |
1098 // See if compilation of this method is already complete. | |
1099 bool CompileBroker::compilation_is_complete(methodHandle method, | |
1100 int osr_bci, | |
1101 int comp_level) { | |
1102 bool is_osr = (osr_bci != standard_entry_bci); | |
1103 if (is_osr) { | |
1104 if (method->is_not_osr_compilable()) { | |
1105 return true; | |
1106 } else { | |
1107 nmethod* result = method->lookup_osr_nmethod_for(osr_bci); | |
1108 return (result != NULL); | |
1109 } | |
1110 } else { | |
1111 if (method->is_not_compilable(comp_level)) { | |
1112 return true; | |
1113 } else { | |
1114 nmethod* result = method->code(); | |
1115 if (result == NULL) return false; | |
1116 #ifdef TIERED | |
1117 if (comp_level == CompLevel_fast_compile) { | |
1118 // At worst the code is from c1 | |
1119 return true; | |
1120 } | |
1121 // comp level must be full opt | |
1122 return result->is_compiled_by_c2(); | |
1123 #endif // TIERED | |
1124 return true; | |
1125 } | |
1126 } | |
1127 } | |
1128 | |
1129 | |
1130 // ------------------------------------------------------------------ | |
1131 // CompileBroker::compilation_is_in_queue | |
1132 // | |
1133 // See if this compilation is already requested. | |
1134 // | |
1135 // Implementation note: there is only a single "is in queue" bit | |
1136 // for each method. This means that the check below is overly | |
1137 // conservative in the sense that an osr compilation in the queue | |
1138 // will block a normal compilation from entering the queue (and vice | |
1139 // versa). This can be remedied by a full queue search to disambiguate | |
1140 // cases. If it is deemed profitible, this may be done. | |
1141 bool CompileBroker::compilation_is_in_queue(methodHandle method, | |
1142 int osr_bci) { | |
1143 return method->queued_for_compilation(); | |
1144 } | |
1145 | |
1146 | |
1147 // ------------------------------------------------------------------ | |
1148 // CompileBroker::compilation_is_prohibited | |
1149 // | |
1150 // See if this compilation is not allowed. | |
1151 bool CompileBroker::compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level) { | |
1152 bool is_native = method->is_native(); | |
1153 // Some compilers may not support the compilation of natives. | |
1154 // QQQ this needs some work ought to only record not compilable at | |
1155 // the specified level | |
1156 if (is_native && | |
1157 (!CICompileNatives || !compiler(comp_level)->supports_native())) { | |
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1158 method->set_not_compilable_quietly(); |
0 | 1159 return true; |
1160 } | |
1161 | |
1162 bool is_osr = (osr_bci != standard_entry_bci); | |
1163 // Some compilers may not support on stack replacement. | |
1164 if (is_osr && | |
1165 (!CICompileOSR || !compiler(comp_level)->supports_osr())) { | |
1166 method->set_not_osr_compilable(); | |
1167 return true; | |
1168 } | |
1169 | |
1170 // The method may be explicitly excluded by the user. | |
1171 bool quietly; | |
1172 if (CompilerOracle::should_exclude(method, quietly)) { | |
1173 if (!quietly) { | |
1174 // This does not happen quietly... | |
1175 ResourceMark rm; | |
1176 tty->print("### Excluding %s:%s", | |
1177 method->is_native() ? "generation of native wrapper" : "compile", | |
1178 (method->is_static() ? " static" : "")); | |
1179 method->print_short_name(tty); | |
1180 tty->cr(); | |
1181 } | |
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1182 method->set_not_compilable_quietly(); |
0 | 1183 } |
1184 | |
1185 return false; | |
1186 } | |
1187 | |
1188 | |
1189 // ------------------------------------------------------------------ | |
1190 // CompileBroker::assign_compile_id | |
1191 // | |
1192 // Assign a serialized id number to this compilation request. If the | |
1193 // number falls out of the allowed range, return a 0. OSR | |
1194 // compilations may be numbered separately from regular compilations | |
1195 // if certain debugging flags are used. | |
1196 uint CompileBroker::assign_compile_id(methodHandle method, int osr_bci) { | |
1197 assert(_method_queue->lock()->owner() == JavaThread::current(), | |
1198 "must hold the compilation queue lock"); | |
1199 bool is_osr = (osr_bci != standard_entry_bci); | |
1200 assert(!method->is_native(), "no longer compile natives"); | |
1201 uint id; | |
1202 if (CICountOSR && is_osr) { | |
1203 id = ++_osr_compilation_id; | |
1204 if ((uint)CIStartOSR <= id && id < (uint)CIStopOSR) { | |
1205 return id; | |
1206 } | |
1207 } else { | |
1208 id = ++_compilation_id; | |
1209 if ((uint)CIStart <= id && id < (uint)CIStop) { | |
1210 return id; | |
1211 } | |
1212 } | |
1213 | |
1214 // Method was not in the appropriate compilation range. | |
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1215 method->set_not_compilable_quietly(); |
0 | 1216 return 0; |
1217 } | |
1218 | |
1219 | |
1220 // ------------------------------------------------------------------ | |
1221 // CompileBroker::is_compile_blocking | |
1222 // | |
1223 // Should the current thread be blocked until this compilation request | |
1224 // has been fulfilled? | |
1225 bool CompileBroker::is_compile_blocking(methodHandle method, int osr_bci) { | |
1226 return !BackgroundCompilation; | |
1227 } | |
1228 | |
1229 | |
1230 // ------------------------------------------------------------------ | |
1231 // CompileBroker::preload_classes | |
1232 void CompileBroker::preload_classes(methodHandle method, TRAPS) { | |
1233 // Move this code over from c1_Compiler.cpp | |
1234 ShouldNotReachHere(); | |
1235 } | |
1236 | |
1237 | |
1238 // ------------------------------------------------------------------ | |
1239 // CompileBroker::create_compile_task | |
1240 // | |
1241 // Create a CompileTask object representing the current request for | |
1242 // compilation. Add this task to the queue. | |
1243 CompileTask* CompileBroker::create_compile_task(CompileQueue* queue, | |
1244 int compile_id, | |
1245 methodHandle method, | |
1246 int osr_bci, | |
1247 int comp_level, | |
1248 methodHandle hot_method, | |
1249 int hot_count, | |
1250 const char* comment, | |
1251 bool blocking) { | |
1252 CompileTask* new_task = allocate_task(); | |
1253 new_task->initialize(compile_id, method, osr_bci, comp_level, | |
1254 hot_method, hot_count, comment, | |
1255 blocking); | |
1256 queue->add(new_task); | |
1257 return new_task; | |
1258 } | |
1259 | |
1260 | |
1261 // ------------------------------------------------------------------ | |
1262 // CompileBroker::allocate_task | |
1263 // | |
1264 // Allocate a CompileTask, from the free list if possible. | |
1265 CompileTask* CompileBroker::allocate_task() { | |
1266 MutexLocker locker(CompileTaskAlloc_lock); | |
1267 CompileTask* task = NULL; | |
1268 if (_task_free_list != NULL) { | |
1269 task = _task_free_list; | |
1270 _task_free_list = task->next(); | |
1271 task->set_next(NULL); | |
1272 } else { | |
1273 task = new CompileTask(); | |
1274 task->set_next(NULL); | |
1275 } | |
1276 return task; | |
1277 } | |
1278 | |
1279 | |
1280 // ------------------------------------------------------------------ | |
1281 // CompileBroker::free_task | |
1282 // | |
1283 // Add a task to the free list. | |
1284 void CompileBroker::free_task(CompileTask* task) { | |
1285 MutexLocker locker(CompileTaskAlloc_lock); | |
1286 task->free(); | |
1287 task->set_next(_task_free_list); | |
1288 _task_free_list = task; | |
1289 } | |
1290 | |
1291 | |
1292 // ------------------------------------------------------------------ | |
1293 // CompileBroker::wait_for_completion | |
1294 // | |
1295 // Wait for the given method CompileTask to complete. | |
1296 void CompileBroker::wait_for_completion(CompileTask* task) { | |
1297 if (CIPrintCompileQueue) { | |
1298 tty->print_cr("BLOCKING FOR COMPILE"); | |
1299 } | |
1300 | |
1301 assert(task->is_blocking(), "can only wait on blocking task"); | |
1302 | |
1303 JavaThread *thread = JavaThread::current(); | |
1304 thread->set_blocked_on_compilation(true); | |
1305 | |
1306 methodHandle method(thread, | |
1307 (methodOop)JNIHandles::resolve(task->method_handle())); | |
1308 { | |
1309 MutexLocker waiter(task->lock(), thread); | |
1310 | |
1311 while (!task->is_complete()) | |
1312 task->lock()->wait(); | |
1313 } | |
1314 // It is harmless to check this status without the lock, because | |
1315 // completion is a stable property (until the task object is recycled). | |
1316 assert(task->is_complete(), "Compilation should have completed"); | |
1317 assert(task->code_handle() == NULL, "must be reset"); | |
1318 | |
1319 thread->set_blocked_on_compilation(false); | |
1320 | |
1321 // By convention, the waiter is responsible for recycling a | |
1322 // blocking CompileTask. Since there is only one waiter ever | |
1323 // waiting on a CompileTask, we know that no one else will | |
1324 // be using this CompileTask; we can free it. | |
1325 free_task(task); | |
1326 } | |
1327 | |
1328 // ------------------------------------------------------------------ | |
1329 // CompileBroker::compiler_thread_loop | |
1330 // | |
1331 // The main loop run by a CompilerThread. | |
1332 void CompileBroker::compiler_thread_loop() { | |
1333 CompilerThread* thread = CompilerThread::current(); | |
1334 CompileQueue* queue = thread->queue(); | |
1335 | |
1336 // For the thread that initializes the ciObjectFactory | |
1337 // this resource mark holds all the shared objects | |
1338 ResourceMark rm; | |
1339 | |
1340 // First thread to get here will initialize the compiler interface | |
1341 | |
1342 if (!ciObjectFactory::is_initialized()) { | |
1343 ASSERT_IN_VM; | |
1344 MutexLocker only_one (CompileThread_lock, thread); | |
1345 if (!ciObjectFactory::is_initialized()) { | |
1346 ciObjectFactory::initialize(); | |
1347 } | |
1348 } | |
1349 | |
1350 // Open a log. | |
1351 if (LogCompilation) { | |
1352 init_compiler_thread_log(); | |
1353 } | |
1354 CompileLog* log = thread->log(); | |
1355 if (log != NULL) { | |
1356 log->begin_elem("start_compile_thread thread='" UINTX_FORMAT "' process='%d'", | |
1357 os::current_thread_id(), | |
1358 os::current_process_id()); | |
1359 log->stamp(); | |
1360 log->end_elem(); | |
1361 } | |
1362 | |
1363 while (true) { | |
1364 { | |
1365 // We need this HandleMark to avoid leaking VM handles. | |
1366 HandleMark hm(thread); | |
1202 | 1367 |
0 | 1368 if (CodeCache::unallocated_capacity() < CodeCacheMinimumFreeSpace) { |
1202 | 1369 // the code cache is really full |
1370 handle_full_code_cache(); | |
1371 } else if (UseCodeCacheFlushing && CodeCache::needs_flushing()) { | |
1372 // Attempt to start cleaning the code cache while there is still a little headroom | |
1373 NMethodSweeper::handle_full_code_cache(false); | |
0 | 1374 } |
1375 | |
1376 CompileTask* task = queue->get(); | |
1377 | |
1378 // Give compiler threads an extra quanta. They tend to be bursty and | |
1379 // this helps the compiler to finish up the job. | |
1380 if( CompilerThreadHintNoPreempt ) | |
1381 os::hint_no_preempt(); | |
1382 | |
1383 // trace per thread time and compile statistics | |
1384 CompilerCounters* counters = ((CompilerThread*)thread)->counters(); | |
1385 PerfTraceTimedEvent(counters->time_counter(), counters->compile_counter()); | |
1386 | |
1387 // Assign the task to the current thread. Mark this compilation | |
1388 // thread as active for the profiler. | |
1389 CompileTaskWrapper ctw(task); | |
1390 nmethodLocker result_handle; // (handle for the nmethod produced by this task) | |
1391 task->set_code_handle(&result_handle); | |
1392 methodHandle method(thread, | |
1393 (methodOop)JNIHandles::resolve(task->method_handle())); | |
1394 | |
1395 // Never compile a method if breakpoints are present in it | |
1396 if (method()->number_of_breakpoints() == 0) { | |
1397 // Compile the method. | |
1202 | 1398 if ((UseCompiler || AlwaysCompileLoopMethods) && CompileBroker::should_compile_new_jobs()) { |
0 | 1399 #ifdef COMPILER1 |
1400 // Allow repeating compilations for the purpose of benchmarking | |
1401 // compile speed. This is not useful for customers. | |
1402 if (CompilationRepeat != 0) { | |
1403 int compile_count = CompilationRepeat; | |
1404 while (compile_count > 0) { | |
1405 invoke_compiler_on_method(task); | |
1406 nmethod* nm = method->code(); | |
1407 if (nm != NULL) { | |
1408 nm->make_zombie(); | |
1409 method->clear_code(); | |
1410 } | |
1411 compile_count--; | |
1412 } | |
1413 } | |
1414 #endif /* COMPILER1 */ | |
1415 invoke_compiler_on_method(task); | |
1416 } else { | |
1417 // After compilation is disabled, remove remaining methods from queue | |
1418 method->clear_queued_for_compilation(); | |
1419 } | |
1420 } | |
1421 } | |
1422 } | |
1423 } | |
1424 | |
1425 | |
1426 // ------------------------------------------------------------------ | |
1427 // CompileBroker::init_compiler_thread_log | |
1428 // | |
1429 // Set up state required by +LogCompilation. | |
1430 void CompileBroker::init_compiler_thread_log() { | |
1431 CompilerThread* thread = CompilerThread::current(); | |
1432 char fileBuf[4*K]; | |
1433 FILE* fp = NULL; | |
1434 char* file = NULL; | |
1435 intx thread_id = os::current_thread_id(); | |
1436 for (int try_temp_dir = 1; try_temp_dir >= 0; try_temp_dir--) { | |
1437 const char* dir = (try_temp_dir ? os::get_temp_directory() : NULL); | |
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1438 if (dir == NULL) { |
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1439 jio_snprintf(fileBuf, sizeof(fileBuf), "hs_c" UINTX_FORMAT "_pid%u.log", |
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1440 thread_id, os::current_process_id()); |
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1441 } else { |
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1442 jio_snprintf(fileBuf, sizeof(fileBuf), |
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1443 "%s%shs_c" UINTX_FORMAT "_pid%u.log", dir, |
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1444 os::file_separator(), thread_id, os::current_process_id()); |
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1445 } |
0 | 1446 fp = fopen(fileBuf, "at"); |
1447 if (fp != NULL) { | |
1448 file = NEW_C_HEAP_ARRAY(char, strlen(fileBuf)+1); | |
1449 strcpy(file, fileBuf); | |
1450 break; | |
1451 } | |
1452 } | |
1453 if (fp == NULL) { | |
1454 warning("Cannot open log file: %s", fileBuf); | |
1455 } else { | |
1456 if (LogCompilation && Verbose) | |
1457 tty->print_cr("Opening compilation log %s", file); | |
1458 CompileLog* log = new(ResourceObj::C_HEAP) CompileLog(file, fp, thread_id); | |
1459 thread->init_log(log); | |
1460 | |
1461 if (xtty != NULL) { | |
1462 ttyLocker ttyl; | |
1463 | |
1464 // Record any per thread log files | |
1465 xtty->elem("thread_logfile thread='%d' filename='%s'", thread_id, file); | |
1466 } | |
1467 } | |
1468 } | |
1469 | |
1470 // ------------------------------------------------------------------ | |
1471 // CompileBroker::set_should_block | |
1472 // | |
1473 // Set _should_block. | |
1474 // Call this from the VM, with Threads_lock held and a safepoint requested. | |
1475 void CompileBroker::set_should_block() { | |
1476 assert(Threads_lock->owner() == Thread::current(), "must have threads lock"); | |
1477 assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint already"); | |
1478 #ifndef PRODUCT | |
1479 if (PrintCompilation && (Verbose || WizardMode)) | |
1480 tty->print_cr("notifying compiler thread pool to block"); | |
1481 #endif | |
1482 _should_block = true; | |
1483 } | |
1484 | |
1485 // ------------------------------------------------------------------ | |
1486 // CompileBroker::maybe_block | |
1487 // | |
1488 // Call this from the compiler at convenient points, to poll for _should_block. | |
1489 void CompileBroker::maybe_block() { | |
1490 if (_should_block) { | |
1491 #ifndef PRODUCT | |
1492 if (PrintCompilation && (Verbose || WizardMode)) | |
1493 tty->print_cr("compiler thread " INTPTR_FORMAT " poll detects block request", Thread::current()); | |
1494 #endif | |
1495 ThreadInVMfromNative tivfn(JavaThread::current()); | |
1496 } | |
1497 } | |
1498 | |
1499 | |
1500 // ------------------------------------------------------------------ | |
1501 // CompileBroker::invoke_compiler_on_method | |
1502 // | |
1503 // Compile a method. | |
1504 // | |
1505 void CompileBroker::invoke_compiler_on_method(CompileTask* task) { | |
1506 if (PrintCompilation) { | |
1507 ResourceMark rm; | |
1508 task->print_line(); | |
1509 } | |
1510 elapsedTimer time; | |
1511 | |
1512 CompilerThread* thread = CompilerThread::current(); | |
1513 ResourceMark rm(thread); | |
1514 | |
1515 // Common flags. | |
1516 uint compile_id = task->compile_id(); | |
1517 int osr_bci = task->osr_bci(); | |
1518 bool is_osr = (osr_bci != standard_entry_bci); | |
1519 bool should_log = (thread->log() != NULL); | |
1520 bool should_break = false; | |
1521 { | |
1522 // create the handle inside it's own block so it can't | |
1523 // accidentally be referenced once the thread transitions to | |
1524 // native. The NoHandleMark before the transition should catch | |
1525 // any cases where this occurs in the future. | |
1526 methodHandle method(thread, | |
1527 (methodOop)JNIHandles::resolve(task->method_handle())); | |
1528 should_break = check_break_at(method, compile_id, is_osr); | |
1529 if (should_log && !CompilerOracle::should_log(method)) { | |
1530 should_log = false; | |
1531 } | |
1532 assert(!method->is_native(), "no longer compile natives"); | |
1533 | |
1534 // Save information about this method in case of failure. | |
1535 set_last_compile(thread, method, is_osr, task->comp_level()); | |
1536 | |
1537 DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler(task->comp_level()), method); | |
1538 } | |
1539 | |
1540 // Allocate a new set of JNI handles. | |
1541 push_jni_handle_block(); | |
1542 jobject target_handle = JNIHandles::make_local(thread, JNIHandles::resolve(task->method_handle())); | |
1543 int compilable = ciEnv::MethodCompilable; | |
1544 { | |
1545 int system_dictionary_modification_counter; | |
1546 { | |
1547 MutexLocker locker(Compile_lock, thread); | |
1548 system_dictionary_modification_counter = SystemDictionary::number_of_modifications(); | |
1549 } | |
1550 | |
1551 NoHandleMark nhm; | |
1552 ThreadToNativeFromVM ttn(thread); | |
1553 | |
1554 ciEnv ci_env(task, system_dictionary_modification_counter); | |
1555 if (should_break) { | |
1556 ci_env.set_break_at_compile(true); | |
1557 } | |
1558 if (should_log) { | |
1559 ci_env.set_log(thread->log()); | |
1560 } | |
1561 assert(thread->env() == &ci_env, "set by ci_env"); | |
1562 // The thread-env() field is cleared in ~CompileTaskWrapper. | |
1563 | |
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1564 // Cache Jvmti state |
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1565 ci_env.cache_jvmti_state(); |
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1566 |
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1567 // Cache DTrace flags |
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1568 ci_env.cache_dtrace_flags(); |
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1569 |
0 | 1570 ciMethod* target = ci_env.get_method_from_handle(target_handle); |
1571 | |
1572 TraceTime t1("compilation", &time); | |
1573 | |
1574 compiler(task->comp_level())->compile_method(&ci_env, target, osr_bci); | |
1575 | |
1576 if (!ci_env.failing() && task->code() == NULL) { | |
1577 //assert(false, "compiler should always document failure"); | |
1578 // The compiler elected, without comment, not to register a result. | |
1579 // Do not attempt further compilations of this method. | |
1580 ci_env.record_method_not_compilable("compile failed"); | |
1581 } | |
1582 | |
1583 if (ci_env.failing()) { | |
1584 // Copy this bit to the enclosing block: | |
1585 compilable = ci_env.compilable(); | |
1586 if (PrintCompilation) { | |
1587 const char* reason = ci_env.failure_reason(); | |
1588 if (compilable == ciEnv::MethodCompilable_not_at_tier) { | |
1589 if (is_highest_tier_compile(ci_env.comp_level())) { | |
1590 // Already at highest tier, promote to not compilable. | |
1591 compilable = ciEnv::MethodCompilable_never; | |
1592 } else { | |
1593 tty->print_cr("%3d COMPILE SKIPPED: %s (retry at different tier)", compile_id, reason); | |
1594 } | |
1595 } | |
1596 | |
1597 if (compilable == ciEnv::MethodCompilable_never) { | |
1598 tty->print_cr("%3d COMPILE SKIPPED: %s (not retryable)", compile_id, reason); | |
1599 } else if (compilable == ciEnv::MethodCompilable) { | |
1600 tty->print_cr("%3d COMPILE SKIPPED: %s", compile_id, reason); | |
1601 } | |
1602 } | |
1603 } else { | |
1604 task->mark_success(); | |
1605 task->set_num_inlined_bytecodes(ci_env.num_inlined_bytecodes()); | |
1606 } | |
1607 } | |
1608 pop_jni_handle_block(); | |
1609 | |
1610 methodHandle method(thread, | |
1611 (methodOop)JNIHandles::resolve(task->method_handle())); | |
1612 | |
1613 DTRACE_METHOD_COMPILE_END_PROBE(compiler(task->comp_level()), method, task->is_success()); | |
1614 | |
1615 collect_statistics(thread, time, task); | |
1616 | |
1617 if (compilable == ciEnv::MethodCompilable_never) { | |
1618 if (is_osr) { | |
1619 method->set_not_osr_compilable(); | |
1620 } else { | |
1208
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1621 method->set_not_compilable_quietly(); |
0 | 1622 } |
1623 } else if (compilable == ciEnv::MethodCompilable_not_at_tier) { | |
1208
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1624 method->set_not_compilable_quietly(task->comp_level()); |
0 | 1625 } |
1626 | |
1627 // Note that the queued_for_compilation bits are cleared without | |
1628 // protection of a mutex. [They were set by the requester thread, | |
1629 // when adding the task to the complie queue -- at which time the | |
1630 // compile queue lock was held. Subsequently, we acquired the compile | |
1631 // queue lock to get this task off the compile queue; thus (to belabour | |
1632 // the point somewhat) our clearing of the bits must be occurring | |
1633 // only after the setting of the bits. See also 14012000 above. | |
1634 method->clear_queued_for_compilation(); | |
1635 | |
1636 #ifdef ASSERT | |
1637 if (CollectedHeap::fired_fake_oom()) { | |
1638 // The current compile received a fake OOM during compilation so | |
1639 // go ahead and exit the VM since the test apparently succeeded | |
1640 tty->print_cr("*** Shutting down VM after successful fake OOM"); | |
1641 vm_exit(0); | |
1642 } | |
1643 #endif | |
1644 } | |
1645 | |
1646 | |
1647 // ------------------------------------------------------------------ | |
1202 | 1648 // CompileBroker::handle_full_code_cache |
1649 // | |
1650 // The CodeCache is full. Print out warning and disable compilation or | |
1651 // try code cache cleaning so compilation can continue later. | |
1652 void CompileBroker::handle_full_code_cache() { | |
1653 UseInterpreter = true; | |
1654 if (UseCompiler || AlwaysCompileLoopMethods ) { | |
1728
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|
1655 if (xtty != NULL) { |
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parents:
1692
diff
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|
1656 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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|
1657 xtty->stamp(); |
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parents:
1692
diff
changeset
|
1658 xtty->end_elem(); |
1202 | 1659 } |
1578
ca3dceda776c
6930994: Code cache is full warning should be visible in product
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1538
diff
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|
1660 warning("CodeCache is full. Compiler has been disabled."); |
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parents:
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diff
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|
1661 warning("Try increasing the code cache size using -XX:ReservedCodeCacheSize="); |
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|
1662 #ifndef PRODUCT |
1202 | 1663 if (CompileTheWorld || ExitOnFullCodeCache) { |
1664 before_exit(JavaThread::current()); | |
1665 exit_globals(); // will delete tty | |
1666 vm_direct_exit(CompileTheWorld ? 0 : 1); | |
1667 } | |
1578
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|
1668 #endif |
1202 | 1669 if (UseCodeCacheFlushing) { |
1670 NMethodSweeper::handle_full_code_cache(true); | |
1671 } else { | |
1672 UseCompiler = false; | |
1673 AlwaysCompileLoopMethods = false; | |
1674 } | |
1675 } | |
1676 } | |
1677 | |
1678 // ------------------------------------------------------------------ | |
0 | 1679 // CompileBroker::set_last_compile |
1680 // | |
1681 // Record this compilation for debugging purposes. | |
1682 void CompileBroker::set_last_compile(CompilerThread* thread, methodHandle method, bool is_osr, int comp_level) { | |
1683 ResourceMark rm; | |
1684 char* method_name = method->name()->as_C_string(); | |
1685 strncpy(_last_method_compiled, method_name, CompileBroker::name_buffer_length); | |
1686 char current_method[CompilerCounters::cmname_buffer_length]; | |
1687 size_t maxLen = CompilerCounters::cmname_buffer_length; | |
1688 | |
1689 if (UsePerfData) { | |
1690 const char* class_name = method->method_holder()->klass_part()->name()->as_C_string(); | |
1691 | |
1692 size_t s1len = strlen(class_name); | |
1693 size_t s2len = strlen(method_name); | |
1694 | |
1695 // check if we need to truncate the string | |
1696 if (s1len + s2len + 2 > maxLen) { | |
1697 | |
1698 // the strategy is to lop off the leading characters of the | |
1699 // class name and the trailing characters of the method name. | |
1700 | |
1701 if (s2len + 2 > maxLen) { | |
1702 // lop of the entire class name string, let snprintf handle | |
1703 // truncation of the method name. | |
1704 class_name += s1len; // null string | |
1705 } | |
1706 else { | |
1707 // lop off the extra characters from the front of the class name | |
1708 class_name += ((s1len + s2len + 2) - maxLen); | |
1709 } | |
1710 } | |
1711 | |
1712 jio_snprintf(current_method, maxLen, "%s %s", class_name, method_name); | |
1713 } | |
1714 | |
1715 if (CICountOSR && is_osr) { | |
1716 _last_compile_type = osr_compile; | |
1717 } else { | |
1718 _last_compile_type = normal_compile; | |
1719 } | |
1720 _last_compile_level = comp_level; | |
1721 | |
1722 if (UsePerfData) { | |
1723 CompilerCounters* counters = thread->counters(); | |
1724 counters->set_current_method(current_method); | |
1725 counters->set_compile_type((jlong)_last_compile_type); | |
1726 } | |
1727 } | |
1728 | |
1729 | |
1730 // ------------------------------------------------------------------ | |
1731 // CompileBroker::push_jni_handle_block | |
1732 // | |
1733 // Push on a new block of JNI handles. | |
1734 void CompileBroker::push_jni_handle_block() { | |
1735 JavaThread* thread = JavaThread::current(); | |
1736 | |
1737 // Allocate a new block for JNI handles. | |
1738 // Inlined code from jni_PushLocalFrame() | |
1739 JNIHandleBlock* java_handles = thread->active_handles(); | |
1740 JNIHandleBlock* compile_handles = JNIHandleBlock::allocate_block(thread); | |
1741 assert(compile_handles != NULL && java_handles != NULL, "should not be NULL"); | |
1742 compile_handles->set_pop_frame_link(java_handles); // make sure java handles get gc'd. | |
1743 thread->set_active_handles(compile_handles); | |
1744 } | |
1745 | |
1746 | |
1747 // ------------------------------------------------------------------ | |
1748 // CompileBroker::pop_jni_handle_block | |
1749 // | |
1750 // Pop off the current block of JNI handles. | |
1751 void CompileBroker::pop_jni_handle_block() { | |
1752 JavaThread* thread = JavaThread::current(); | |
1753 | |
1754 // Release our JNI handle block | |
1755 JNIHandleBlock* compile_handles = thread->active_handles(); | |
1756 JNIHandleBlock* java_handles = compile_handles->pop_frame_link(); | |
1757 thread->set_active_handles(java_handles); | |
1758 compile_handles->set_pop_frame_link(NULL); | |
1759 JNIHandleBlock::release_block(compile_handles, thread); // may block | |
1760 } | |
1761 | |
1762 | |
1763 // ------------------------------------------------------------------ | |
1764 // CompileBroker::check_break_at | |
1765 // | |
1766 // Should the compilation break at the current compilation. | |
1767 bool CompileBroker::check_break_at(methodHandle method, int compile_id, bool is_osr) { | |
1768 if (CICountOSR && is_osr && (compile_id == CIBreakAtOSR)) { | |
1769 return true; | |
1770 } else if( CompilerOracle::should_break_at(method) ) { // break when compiling | |
1771 return true; | |
1772 } else { | |
1773 return (compile_id == CIBreakAt); | |
1774 } | |
1775 } | |
1776 | |
1777 // ------------------------------------------------------------------ | |
1778 // CompileBroker::collect_statistics | |
1779 // | |
1780 // Collect statistics about the compilation. | |
1781 | |
1782 void CompileBroker::collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task) { | |
1783 bool success = task->is_success(); | |
1784 methodHandle method (thread, (methodOop)JNIHandles::resolve(task->method_handle())); | |
1785 uint compile_id = task->compile_id(); | |
1786 bool is_osr = (task->osr_bci() != standard_entry_bci); | |
1787 nmethod* code = task->code(); | |
1788 CompilerCounters* counters = thread->counters(); | |
1789 | |
1790 assert(code == NULL || code->is_locked_by_vm(), "will survive the MutexLocker"); | |
1791 MutexLocker locker(CompileStatistics_lock); | |
1792 | |
1793 // _perf variables are production performance counters which are | |
1794 // updated regardless of the setting of the CITime and CITimeEach flags | |
1795 // | |
1796 if (!success) { | |
1797 _total_bailout_count++; | |
1798 if (UsePerfData) { | |
1799 _perf_last_failed_method->set_value(counters->current_method()); | |
1800 _perf_last_failed_type->set_value(counters->compile_type()); | |
1801 _perf_total_bailout_count->inc(); | |
1802 } | |
1803 } else if (code == NULL) { | |
1804 if (UsePerfData) { | |
1805 _perf_last_invalidated_method->set_value(counters->current_method()); | |
1806 _perf_last_invalidated_type->set_value(counters->compile_type()); | |
1807 _perf_total_invalidated_count->inc(); | |
1808 } | |
1809 _total_invalidated_count++; | |
1810 } else { | |
1811 // Compilation succeeded | |
1812 | |
1813 // update compilation ticks - used by the implementation of | |
1814 // java.lang.management.CompilationMBean | |
1815 _perf_total_compilation->inc(time.ticks()); | |
1816 | |
1817 if (CITime) { | |
1818 _t_total_compilation.add(time); | |
1819 if (is_osr) { | |
1820 _t_osr_compilation.add(time); | |
1821 _sum_osr_bytes_compiled += method->code_size() + task->num_inlined_bytecodes(); | |
1822 } else { | |
1823 _t_standard_compilation.add(time); | |
1824 _sum_standard_bytes_compiled += method->code_size() + task->num_inlined_bytecodes(); | |
1825 } | |
1826 } | |
1827 | |
1828 if (UsePerfData) { | |
1829 // save the name of the last method compiled | |
1830 _perf_last_method->set_value(counters->current_method()); | |
1831 _perf_last_compile_type->set_value(counters->compile_type()); | |
1832 _perf_last_compile_size->set_value(method->code_size() + | |
1833 task->num_inlined_bytecodes()); | |
1834 if (is_osr) { | |
1835 _perf_osr_compilation->inc(time.ticks()); | |
1836 _perf_sum_osr_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes()); | |
1837 } else { | |
1838 _perf_standard_compilation->inc(time.ticks()); | |
1839 _perf_sum_standard_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes()); | |
1840 } | |
1841 } | |
1842 | |
1843 if (CITimeEach) { | |
1844 float bytes_per_sec = 1.0 * (method->code_size() + task->num_inlined_bytecodes()) / time.seconds(); | |
1845 tty->print_cr("%3d seconds: %f bytes/sec : %f (bytes %d + %d inlined)", | |
1846 compile_id, time.seconds(), bytes_per_sec, method->code_size(), task->num_inlined_bytecodes()); | |
1847 } | |
1848 | |
1849 // Collect counts of successful compilations | |
1850 _sum_nmethod_size += code->total_size(); | |
1851 _sum_nmethod_code_size += code->code_size(); | |
1852 _total_compile_count++; | |
1853 | |
1854 if (UsePerfData) { | |
1855 _perf_sum_nmethod_size->inc(code->total_size()); | |
1856 _perf_sum_nmethod_code_size->inc(code->code_size()); | |
1857 _perf_total_compile_count->inc(); | |
1858 } | |
1859 | |
1860 if (is_osr) { | |
1861 if (UsePerfData) _perf_total_osr_compile_count->inc(); | |
1862 _total_osr_compile_count++; | |
1863 } else { | |
1864 if (UsePerfData) _perf_total_standard_compile_count->inc(); | |
1865 _total_standard_compile_count++; | |
1866 } | |
1867 } | |
1868 // set the current method for the thread to null | |
1869 if (UsePerfData) counters->set_current_method(""); | |
1870 } | |
1871 | |
1872 | |
1873 | |
1874 void CompileBroker::print_times() { | |
1875 tty->cr(); | |
1876 tty->print_cr("Accumulated compiler times (for compiled methods only)"); | |
1877 tty->print_cr("------------------------------------------------"); | |
1878 //0000000000111111111122222222223333333333444444444455555555556666666666 | |
1879 //0123456789012345678901234567890123456789012345678901234567890123456789 | |
1880 tty->print_cr(" Total compilation time : %6.3f s", CompileBroker::_t_total_compilation.seconds()); | |
1881 tty->print_cr(" Standard compilation : %6.3f s, Average : %2.3f", | |
1882 CompileBroker::_t_standard_compilation.seconds(), | |
1883 CompileBroker::_t_standard_compilation.seconds() / CompileBroker::_total_standard_compile_count); | |
1884 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 | 1885 |
1886 if (compiler(CompLevel_fast_compile)) { | |
1887 compiler(CompLevel_fast_compile)->print_timers(); | |
1888 if (compiler(CompLevel_fast_compile) != compiler(CompLevel_highest_tier)) | |
1889 compiler(CompLevel_highest_tier)->print_timers(); | |
0 | 1890 } |
1891 | |
1892 tty->cr(); | |
1893 int tcb = CompileBroker::_sum_osr_bytes_compiled + CompileBroker::_sum_standard_bytes_compiled; | |
1894 tty->print_cr(" Total compiled bytecodes : %6d bytes", tcb); | |
1895 tty->print_cr(" Standard compilation : %6d bytes", CompileBroker::_sum_standard_bytes_compiled); | |
1896 tty->print_cr(" On stack replacement : %6d bytes", CompileBroker::_sum_osr_bytes_compiled); | |
1897 int bps = (int)(tcb / CompileBroker::_t_total_compilation.seconds()); | |
1898 tty->print_cr(" Average compilation speed: %6d bytes/s", bps); | |
1899 tty->cr(); | |
1900 tty->print_cr(" nmethod code size : %6d bytes", CompileBroker::_sum_nmethod_code_size); | |
1901 tty->print_cr(" nmethod total size : %6d bytes", CompileBroker::_sum_nmethod_size); | |
1902 } | |
1903 | |
1904 | |
1905 // Debugging output for failure | |
1906 void CompileBroker::print_last_compile() { | |
1907 if ( _last_compile_level != CompLevel_none && | |
1908 compiler(_last_compile_level) != NULL && | |
1909 _last_method_compiled != NULL && | |
1910 _last_compile_type != no_compile) { | |
1911 if (_last_compile_type == osr_compile) { | |
1912 tty->print_cr("Last parse: [osr]%d+++(%d) %s", | |
1913 _osr_compilation_id, _last_compile_level, _last_method_compiled); | |
1914 } else { | |
1915 tty->print_cr("Last parse: %d+++(%d) %s", | |
1916 _compilation_id, _last_compile_level, _last_method_compiled); | |
1917 } | |
1918 } | |
1919 } | |
1920 | |
1921 | |
1922 void CompileBroker::print_compiler_threads_on(outputStream* st) { | |
1923 #ifndef PRODUCT | |
1924 st->print_cr("Compiler thread printing unimplemented."); | |
1925 st->cr(); | |
1926 #endif | |
1927 } |