1 /*
2 * Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "classfile/systemDictionary.hpp"
27 #include "classfile/vmSymbols.hpp"
28 #include "code/codeCache.hpp"
29 #include "compiler/compileBroker.hpp"
30 #include "compiler/compileLog.hpp"
31 #include "compiler/compilerOracle.hpp"
32 #include "interpreter/linkResolver.hpp"
33 #include "memory/allocation.inline.hpp"
34 #include "oops/methodDataOop.hpp"
35 #include "oops/methodOop.hpp"
36 #include "oops/oop.inline.hpp"
37 #include "prims/nativeLookup.hpp"
38 #include "runtime/arguments.hpp"
39 #include "runtime/compilationPolicy.hpp"
40 #include "runtime/init.hpp"
41 #include "runtime/interfaceSupport.hpp"
42 #include "runtime/javaCalls.hpp"
43 #include "runtime/os.hpp"
44 #include "runtime/sharedRuntime.hpp"
45 #include "runtime/sweeper.hpp"
46 #include "utilities/dtrace.hpp"
47 #ifdef COMPILER1
48 #include "c1/c1_Compiler.hpp"
49 #endif
50 #ifdef COMPILER2
51 #include "opto/c2compiler.hpp"
52 #endif
53 #ifdef SHARK
54 #include "shark/sharkCompiler.hpp"
55 #endif
56
57 #ifdef DTRACE_ENABLED
58
59 // Only bother with this argument setup if dtrace is available
60
61 #ifndef USDT2
62 HS_DTRACE_PROBE_DECL8(hotspot, method__compile__begin,
63 char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t);
64 HS_DTRACE_PROBE_DECL9(hotspot, method__compile__end,
65 char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t, bool);
66
67 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method) \
68 { \
69 char* comp_name = (char*)(compiler)->name(); \
70 Symbol* klass_name = (method)->klass_name(); \
71 Symbol* name = (method)->name(); \
72 Symbol* signature = (method)->signature(); \
73 HS_DTRACE_PROBE8(hotspot, method__compile__begin, \
74 comp_name, strlen(comp_name), \
75 klass_name->bytes(), klass_name->utf8_length(), \
76 name->bytes(), name->utf8_length(), \
77 signature->bytes(), signature->utf8_length()); \
78 }
79
80 #define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, success) \
81 { \
82 char* comp_name = (char*)(compiler)->name(); \
83 Symbol* klass_name = (method)->klass_name(); \
84 Symbol* name = (method)->name(); \
85 Symbol* signature = (method)->signature(); \
86 HS_DTRACE_PROBE9(hotspot, method__compile__end, \
87 comp_name, strlen(comp_name), \
88 klass_name->bytes(), klass_name->utf8_length(), \
89 name->bytes(), name->utf8_length(), \
90 signature->bytes(), signature->utf8_length(), (success)); \
91 }
92
93 #else /* USDT2 */
94
95 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method) \
96 { \
97 char* comp_name = (char*)(compiler)->name(); \
98 Symbol* klass_name = (method)->klass_name(); \
99 Symbol* name = (method)->name(); \
100 Symbol* signature = (method)->signature(); \
101 HOTSPOT_METHOD_COMPILE_BEGIN( \
102 comp_name, strlen(comp_name), \
103 (char *) klass_name->bytes(), klass_name->utf8_length(), \
104 (char *) name->bytes(), name->utf8_length(), \
105 (char *) signature->bytes(), signature->utf8_length()); \
106 }
107
108 #define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, success) \
109 { \
110 char* comp_name = (char*)(compiler)->name(); \
111 Symbol* klass_name = (method)->klass_name(); \
112 Symbol* name = (method)->name(); \
113 Symbol* signature = (method)->signature(); \
114 HOTSPOT_METHOD_COMPILE_END( \
115 comp_name, strlen(comp_name), \
116 (char *) klass_name->bytes(), klass_name->utf8_length(), \
117 (char *) name->bytes(), name->utf8_length(), \
118 (char *) signature->bytes(), signature->utf8_length(), (success)); \
119 }
120 #endif /* USDT2 */
121
122 #else // ndef DTRACE_ENABLED
123
124 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method)
125 #define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, success)
126
127 #endif // ndef DTRACE_ENABLED
128
129 bool CompileBroker::_initialized = false;
130 volatile bool CompileBroker::_should_block = false;
131 volatile jint CompileBroker::_should_compile_new_jobs = run_compilation;
132
133 // The installed compiler(s)
134 AbstractCompiler* CompileBroker::_compilers[2];
135
136 // These counters are used for assigning id's to each compilation
137 uint CompileBroker::_compilation_id = 0;
138 uint CompileBroker::_osr_compilation_id = 0;
139
140 // Debugging information
141 int CompileBroker::_last_compile_type = no_compile;
142 int CompileBroker::_last_compile_level = CompLevel_none;
143 char CompileBroker::_last_method_compiled[CompileBroker::name_buffer_length];
144
145 // Performance counters
146 PerfCounter* CompileBroker::_perf_total_compilation = NULL;
147 PerfCounter* CompileBroker::_perf_osr_compilation = NULL;
148 PerfCounter* CompileBroker::_perf_standard_compilation = NULL;
149
150 PerfCounter* CompileBroker::_perf_total_bailout_count = NULL;
151 PerfCounter* CompileBroker::_perf_total_invalidated_count = NULL;
152 PerfCounter* CompileBroker::_perf_total_compile_count = NULL;
153 PerfCounter* CompileBroker::_perf_total_osr_compile_count = NULL;
154 PerfCounter* CompileBroker::_perf_total_standard_compile_count = NULL;
155
156 PerfCounter* CompileBroker::_perf_sum_osr_bytes_compiled = NULL;
157 PerfCounter* CompileBroker::_perf_sum_standard_bytes_compiled = NULL;
158 PerfCounter* CompileBroker::_perf_sum_nmethod_size = NULL;
159 PerfCounter* CompileBroker::_perf_sum_nmethod_code_size = NULL;
160
161 PerfStringVariable* CompileBroker::_perf_last_method = NULL;
162 PerfStringVariable* CompileBroker::_perf_last_failed_method = NULL;
163 PerfStringVariable* CompileBroker::_perf_last_invalidated_method = NULL;
164 PerfVariable* CompileBroker::_perf_last_compile_type = NULL;
165 PerfVariable* CompileBroker::_perf_last_compile_size = NULL;
166 PerfVariable* CompileBroker::_perf_last_failed_type = NULL;
167 PerfVariable* CompileBroker::_perf_last_invalidated_type = NULL;
168
169 // Timers and counters for generating statistics
170 elapsedTimer CompileBroker::_t_total_compilation;
171 elapsedTimer CompileBroker::_t_osr_compilation;
172 elapsedTimer CompileBroker::_t_standard_compilation;
173
174 int CompileBroker::_total_bailout_count = 0;
175 int CompileBroker::_total_invalidated_count = 0;
176 int CompileBroker::_total_compile_count = 0;
177 int CompileBroker::_total_osr_compile_count = 0;
178 int CompileBroker::_total_standard_compile_count = 0;
179
180 int CompileBroker::_sum_osr_bytes_compiled = 0;
181 int CompileBroker::_sum_standard_bytes_compiled = 0;
182 int CompileBroker::_sum_nmethod_size = 0;
183 int CompileBroker::_sum_nmethod_code_size = 0;
184
185 CompileQueue* CompileBroker::_c2_method_queue = NULL;
186 CompileQueue* CompileBroker::_c1_method_queue = NULL;
187 CompileTask* CompileBroker::_task_free_list = NULL;
188
189 GrowableArray<CompilerThread*>* CompileBroker::_method_threads = NULL;
190
191
192 CompileTaskWrapper::CompileTaskWrapper(CompileTask* task) {
193 CompilerThread* thread = CompilerThread::current();
194 thread->set_task(task);
195 CompileLog* log = thread->log();
196 if (log != NULL) task->log_task_start(log);
197 }
198
199 CompileTaskWrapper::~CompileTaskWrapper() {
200 CompilerThread* thread = CompilerThread::current();
201 CompileTask* task = thread->task();
202 CompileLog* log = thread->log();
203 if (log != NULL) task->log_task_done(log);
204 thread->set_task(NULL);
205 task->set_code_handle(NULL);
206 DEBUG_ONLY(thread->set_env((ciEnv*)badAddress));
207 if (task->is_blocking()) {
208 MutexLocker notifier(task->lock(), thread);
209 task->mark_complete();
210 // Notify the waiting thread that the compilation has completed.
211 task->lock()->notify_all();
212 } else {
213 task->mark_complete();
214
215 // By convention, the compiling thread is responsible for
216 // recycling a non-blocking CompileTask.
217 CompileBroker::free_task(task);
218 }
219 }
220
221
222 // ------------------------------------------------------------------
223 // CompileTask::initialize
224 void CompileTask::initialize(int compile_id,
225 methodHandle method,
226 int osr_bci,
227 int comp_level,
228 methodHandle hot_method,
229 int hot_count,
230 const char* comment,
231 bool is_blocking) {
232 assert(!_lock->is_locked(), "bad locking");
233
234 _compile_id = compile_id;
235 _method = JNIHandles::make_global(method);
236 _osr_bci = osr_bci;
237 _is_blocking = is_blocking;
238 _comp_level = comp_level;
239 _num_inlined_bytecodes = 0;
240
241 _is_complete = false;
242 _is_success = false;
243 _code_handle = NULL;
244
245 _hot_method = NULL;
246 _hot_count = hot_count;
247 _time_queued = 0; // tidy
248 _comment = comment;
249
250 if (LogCompilation) {
251 _time_queued = os::elapsed_counter();
252 if (hot_method.not_null()) {
253 if (hot_method == method) {
254 _hot_method = _method;
255 } else {
256 _hot_method = JNIHandles::make_global(hot_method);
257 }
258 }
259 }
260
261 _next = NULL;
262 }
263
264 // ------------------------------------------------------------------
265 // CompileTask::code/set_code
266 nmethod* CompileTask::code() const {
267 if (_code_handle == NULL) return NULL;
268 return _code_handle->code();
269 }
270 void CompileTask::set_code(nmethod* nm) {
271 if (_code_handle == NULL && nm == NULL) return;
272 guarantee(_code_handle != NULL, "");
273 _code_handle->set_code(nm);
274 if (nm == NULL) _code_handle = NULL; // drop the handle also
275 }
276
277 // ------------------------------------------------------------------
278 // CompileTask::free
279 void CompileTask::free() {
280 set_code(NULL);
281 assert(!_lock->is_locked(), "Should not be locked when freed");
282 if (_hot_method != NULL && _hot_method != _method) {
283 JNIHandles::destroy_global(_hot_method);
284 }
285 JNIHandles::destroy_global(_method);
286 }
287
288
289 // ------------------------------------------------------------------
290 // CompileTask::print
291 void CompileTask::print() {
292 tty->print("<CompileTask compile_id=%d ", _compile_id);
293 tty->print("method=");
294 ((methodOop)JNIHandles::resolve(_method))->print_name(tty);
295 tty->print_cr(" osr_bci=%d is_blocking=%s is_complete=%s is_success=%s>",
296 _osr_bci, bool_to_str(_is_blocking),
297 bool_to_str(_is_complete), bool_to_str(_is_success));
298 }
299
300
301 // ------------------------------------------------------------------
302 // CompileTask::print_line_on_error
303 //
304 // This function is called by fatal error handler when the thread
305 // causing troubles is a compiler thread.
306 //
307 // Do not grab any lock, do not allocate memory.
308 //
309 // Otherwise it's the same as CompileTask::print_line()
310 //
311 void CompileTask::print_line_on_error(outputStream* st, char* buf, int buflen) {
312 // print compiler name
313 st->print("%s:", CompileBroker::compiler(comp_level())->name());
314 print_compilation(st);
315 }
316
317 // ------------------------------------------------------------------
318 // CompileTask::print_line
319 void CompileTask::print_line() {
320 ttyLocker ttyl; // keep the following output all in one block
321 // print compiler name if requested
322 if (CIPrintCompilerName) tty->print("%s:", CompileBroker::compiler(comp_level())->name());
323 print_compilation();
324 }
325
326
327 // ------------------------------------------------------------------
328 // CompileTask::print_compilation_impl
329 void CompileTask::print_compilation_impl(outputStream* st, methodOop method, int compile_id, int comp_level, bool is_osr_method, int osr_bci, bool is_blocking, const char* msg) {
330 st->print("%7d ", (int) st->time_stamp().milliseconds()); // print timestamp
331 st->print("%4d ", compile_id); // print compilation number
332
333 // For unloaded methods the transition to zombie occurs after the
334 // method is cleared so it's impossible to report accurate
335 // information for that case.
336 bool is_synchronized = false;
337 bool has_exception_handler = false;
338 bool is_native = false;
339 if (method != NULL) {
340 is_synchronized = method->is_synchronized();
341 has_exception_handler = method->has_exception_handler();
342 is_native = method->is_native();
343 }
344 // method attributes
345 const char compile_type = is_osr_method ? '%' : ' ';
346 const char sync_char = is_synchronized ? 's' : ' ';
347 const char exception_char = has_exception_handler ? '!' : ' ';
348 const char blocking_char = is_blocking ? 'b' : ' ';
349 const char native_char = is_native ? 'n' : ' ';
350
351 // print method attributes
352 st->print("%c%c%c%c%c ", compile_type, sync_char, exception_char, blocking_char, native_char);
353
354 if (TieredCompilation) {
355 if (comp_level != -1) st->print("%d ", comp_level);
356 else st->print("- ");
357 }
358 st->print(" "); // more indent
359
360 if (method == NULL) {
361 st->print("(method)");
362 } else {
363 method->print_short_name(st);
364 if (is_osr_method) {
365 st->print(" @ %d", osr_bci);
366 }
367 st->print(" (%d bytes)", method->code_size());
368 }
369
370 if (msg != NULL) {
371 st->print(" %s", msg);
372 }
373 st->cr();
374 }
375
376 // ------------------------------------------------------------------
377 // CompileTask::print_inlining
378 void CompileTask::print_inlining(outputStream* st, ciMethod* method, int inline_level, int bci, const char* msg) {
379 // 1234567
380 st->print(" "); // print timestamp
381 // 1234
382 st->print(" "); // print compilation number
383
384 // method attributes
385 const char sync_char = method->is_synchronized() ? 's' : ' ';
386 const char exception_char = method->has_exception_handlers() ? '!' : ' ';
387 const char monitors_char = method->has_monitor_bytecodes() ? 'm' : ' ';
388
389 // print method attributes
390 st->print(" %c%c%c ", sync_char, exception_char, monitors_char);
391
392 if (TieredCompilation) {
393 st->print(" ");
394 }
395 st->print(" "); // more indent
396 st->print(" "); // initial inlining indent
397
398 for (int i = 0; i < inline_level; i++) st->print(" ");
399
400 st->print("@ %d ", bci); // print bci
401 method->print_short_name(st);
402 st->print(" (%d bytes)", method->code_size());
403
404 if (msg != NULL) {
405 st->print(" %s", msg);
406 }
407 st->cr();
408 }
409
410 // ------------------------------------------------------------------
411 // CompileTask::print_inline_indent
412 void CompileTask::print_inline_indent(int inline_level, outputStream* st) {
413 // 1234567
414 st->print(" "); // print timestamp
415 // 1234
416 st->print(" "); // print compilation number
417 // %s!bn
418 st->print(" "); // print method attributes
419 if (TieredCompilation) {
420 st->print(" ");
421 }
422 st->print(" "); // more indent
423 st->print(" "); // initial inlining indent
424 for (int i = 0; i < inline_level; i++) st->print(" ");
425 }
426
427 // ------------------------------------------------------------------
428 // CompileTask::print_compilation
429 void CompileTask::print_compilation(outputStream* st) {
430 oop rem = JNIHandles::resolve(method_handle());
431 assert(rem != NULL && rem->is_method(), "must be");
432 methodOop method = (methodOop) rem;
433 bool is_osr_method = osr_bci() != InvocationEntryBci;
434 print_compilation_impl(st, method, compile_id(), comp_level(), is_osr_method, osr_bci(), is_blocking());
435 }
436
437 // ------------------------------------------------------------------
438 // CompileTask::log_task
439 void CompileTask::log_task(xmlStream* log) {
440 Thread* thread = Thread::current();
441 methodHandle method(thread,
442 (methodOop)JNIHandles::resolve(method_handle()));
443 ResourceMark rm(thread);
444
445 // <task id='9' method='M' osr_bci='X' level='1' blocking='1' stamp='1.234'>
446 if (_compile_id != 0) log->print(" compile_id='%d'", _compile_id);
447 if (_osr_bci != CompileBroker::standard_entry_bci) {
448 log->print(" compile_kind='osr'"); // same as nmethod::compile_kind
449 } // else compile_kind='c2c'
450 if (!method.is_null()) log->method(method);
451 if (_osr_bci != CompileBroker::standard_entry_bci) {
452 log->print(" osr_bci='%d'", _osr_bci);
453 }
454 if (_comp_level != CompLevel_highest_tier) {
455 log->print(" level='%d'", _comp_level);
456 }
457 if (_is_blocking) {
458 log->print(" blocking='1'");
459 }
460 log->stamp();
461 }
462
463
464 // ------------------------------------------------------------------
465 // CompileTask::log_task_queued
466 void CompileTask::log_task_queued() {
467 Thread* thread = Thread::current();
468 ttyLocker ttyl;
469 ResourceMark rm(thread);
470
471 xtty->begin_elem("task_queued");
472 log_task(xtty);
473 if (_comment != NULL) {
474 xtty->print(" comment='%s'", _comment);
475 }
476 if (_hot_method != NULL) {
477 methodHandle hot(thread,
478 (methodOop)JNIHandles::resolve(_hot_method));
479 methodHandle method(thread,
480 (methodOop)JNIHandles::resolve(_method));
481 if (hot() != method()) {
482 xtty->method(hot);
483 }
484 }
485 if (_hot_count != 0) {
486 xtty->print(" hot_count='%d'", _hot_count);
487 }
488 xtty->end_elem();
489 }
490
491
492 // ------------------------------------------------------------------
493 // CompileTask::log_task_start
494 void CompileTask::log_task_start(CompileLog* log) {
495 log->begin_head("task");
496 log_task(log);
497 log->end_head();
498 }
499
500
501 // ------------------------------------------------------------------
502 // CompileTask::log_task_done
503 void CompileTask::log_task_done(CompileLog* log) {
504 Thread* thread = Thread::current();
505 methodHandle method(thread,
506 (methodOop)JNIHandles::resolve(method_handle()));
507 ResourceMark rm(thread);
508
509 // <task_done ... stamp='1.234'> </task>
510 nmethod* nm = code();
511 log->begin_elem("task_done success='%d' nmsize='%d' count='%d'",
512 _is_success, nm == NULL ? 0 : nm->content_size(),
513 method->invocation_count());
514 int bec = method->backedge_count();
515 if (bec != 0) log->print(" backedge_count='%d'", bec);
516 // Note: "_is_complete" is about to be set, but is not.
517 if (_num_inlined_bytecodes != 0) {
518 log->print(" inlined_bytes='%d'", _num_inlined_bytecodes);
519 }
520 log->stamp();
521 log->end_elem();
522 log->tail("task");
523 log->clear_identities(); // next task will have different CI
524 if (log->unflushed_count() > 2000) {
525 log->flush();
526 }
527 log->mark_file_end();
528 }
529
530
531
532 // ------------------------------------------------------------------
533 // CompileQueue::add
534 //
535 // Add a CompileTask to a CompileQueue
536 void CompileQueue::add(CompileTask* task) {
537 assert(lock()->owned_by_self(), "must own lock");
538
539 task->set_next(NULL);
540 task->set_prev(NULL);
541
542 if (_last == NULL) {
543 // The compile queue is empty.
544 assert(_first == NULL, "queue is empty");
545 _first = task;
546 _last = task;
547 } else {
548 // Append the task to the queue.
549 assert(_last->next() == NULL, "not last");
550 _last->set_next(task);
551 task->set_prev(_last);
552 _last = task;
553 }
554 ++_size;
555
556 // Mark the method as being in the compile queue.
557 ((methodOop)JNIHandles::resolve(task->method_handle()))->set_queued_for_compilation();
558
559 if (CIPrintCompileQueue) {
560 print();
561 }
562
563 if (LogCompilation && xtty != NULL) {
564 task->log_task_queued();
565 }
566
567 // Notify CompilerThreads that a task is available.
568 lock()->notify_all();
569 }
570
571 // ------------------------------------------------------------------
572 // CompileQueue::get
573 //
574 // Get the next CompileTask from a CompileQueue
575 CompileTask* CompileQueue::get() {
576 NMethodSweeper::possibly_sweep();
577
578 MutexLocker locker(lock());
579 // Wait for an available CompileTask.
580 while (_first == NULL) {
581 // There is no work to be done right now. Wait.
582 if (UseCodeCacheFlushing && (!CompileBroker::should_compile_new_jobs() || CodeCache::needs_flushing())) {
583 // During the emergency sweeping periods, wake up and sweep occasionally
584 bool timedout = lock()->wait(!Mutex::_no_safepoint_check_flag, NmethodSweepCheckInterval*1000);
585 if (timedout) {
586 MutexUnlocker ul(lock());
587 // When otherwise not busy, run nmethod sweeping
588 NMethodSweeper::possibly_sweep();
589 }
590 } else {
591 // During normal operation no need to wake up on timer
592 lock()->wait();
593 }
594 }
595 CompileTask* task = CompilationPolicy::policy()->select_task(this);
596 remove(task);
597 return task;
598 }
599
600 void CompileQueue::remove(CompileTask* task)
601 {
602 assert(lock()->owned_by_self(), "must own lock");
603 if (task->prev() != NULL) {
604 task->prev()->set_next(task->next());
605 } else {
606 // max is the first element
607 assert(task == _first, "Sanity");
608 _first = task->next();
609 }
610
611 if (task->next() != NULL) {
612 task->next()->set_prev(task->prev());
613 } else {
614 // max is the last element
615 assert(task == _last, "Sanity");
616 _last = task->prev();
617 }
618 --_size;
619 }
620
621 // ------------------------------------------------------------------
622 // CompileQueue::print
623 void CompileQueue::print() {
624 tty->print_cr("Contents of %s", name());
625 tty->print_cr("----------------------");
626 CompileTask* task = _first;
627 while (task != NULL) {
628 task->print_line();
629 task = task->next();
630 }
631 tty->print_cr("----------------------");
632 }
633
634 CompilerCounters::CompilerCounters(const char* thread_name, int instance, TRAPS) {
635
636 _current_method[0] = '\0';
637 _compile_type = CompileBroker::no_compile;
638
639 if (UsePerfData) {
640 ResourceMark rm;
641
642 // create the thread instance name space string - don't create an
643 // instance subspace if instance is -1 - keeps the adapterThread
644 // counters from having a ".0" namespace.
645 const char* thread_i = (instance == -1) ? thread_name :
646 PerfDataManager::name_space(thread_name, instance);
647
648
649 char* name = PerfDataManager::counter_name(thread_i, "method");
650 _perf_current_method =
651 PerfDataManager::create_string_variable(SUN_CI, name,
652 cmname_buffer_length,
653 _current_method, CHECK);
654
655 name = PerfDataManager::counter_name(thread_i, "type");
656 _perf_compile_type = PerfDataManager::create_variable(SUN_CI, name,
657 PerfData::U_None,
658 (jlong)_compile_type,
659 CHECK);
660
661 name = PerfDataManager::counter_name(thread_i, "time");
662 _perf_time = PerfDataManager::create_counter(SUN_CI, name,
663 PerfData::U_Ticks, CHECK);
664
665 name = PerfDataManager::counter_name(thread_i, "compiles");
666 _perf_compiles = PerfDataManager::create_counter(SUN_CI, name,
667 PerfData::U_Events, CHECK);
668 }
669 }
670
671 // ------------------------------------------------------------------
672 // CompileBroker::compilation_init
673 //
674 // Initialize the Compilation object
675 void CompileBroker::compilation_init() {
676 _last_method_compiled[0] = '\0';
677
678 #ifndef SHARK
679 // Set the interface to the current compiler(s).
680 int c1_count = CompilationPolicy::policy()->compiler_count(CompLevel_simple);
681 int c2_count = CompilationPolicy::policy()->compiler_count(CompLevel_full_optimization);
682 #ifdef COMPILER1
683 if (c1_count > 0) {
684 _compilers[0] = new Compiler();
685 }
686 #endif // COMPILER1
687
688 #ifdef COMPILER2
689 if (c2_count > 0) {
690 _compilers[1] = new C2Compiler();
691 }
692 #endif // COMPILER2
693
694 #else // SHARK
695 int c1_count = 0;
696 int c2_count = 1;
697
698 _compilers[1] = new SharkCompiler();
699 #endif // SHARK
700
701 // Initialize the CompileTask free list
702 _task_free_list = NULL;
703
704 // Start the CompilerThreads
705 init_compiler_threads(c1_count, c2_count);
706 // totalTime performance counter is always created as it is required
707 // by the implementation of java.lang.management.CompilationMBean.
708 {
709 EXCEPTION_MARK;
710 _perf_total_compilation =
711 PerfDataManager::create_counter(JAVA_CI, "totalTime",
712 PerfData::U_Ticks, CHECK);
713 }
714
715
716 if (UsePerfData) {
717
718 EXCEPTION_MARK;
719
720 // create the jvmstat performance counters
721 _perf_osr_compilation =
722 PerfDataManager::create_counter(SUN_CI, "osrTime",
723 PerfData::U_Ticks, CHECK);
724
725 _perf_standard_compilation =
726 PerfDataManager::create_counter(SUN_CI, "standardTime",
727 PerfData::U_Ticks, CHECK);
728
729 _perf_total_bailout_count =
730 PerfDataManager::create_counter(SUN_CI, "totalBailouts",
731 PerfData::U_Events, CHECK);
732
733 _perf_total_invalidated_count =
734 PerfDataManager::create_counter(SUN_CI, "totalInvalidates",
735 PerfData::U_Events, CHECK);
736
737 _perf_total_compile_count =
738 PerfDataManager::create_counter(SUN_CI, "totalCompiles",
739 PerfData::U_Events, CHECK);
740 _perf_total_osr_compile_count =
741 PerfDataManager::create_counter(SUN_CI, "osrCompiles",
742 PerfData::U_Events, CHECK);
743
744 _perf_total_standard_compile_count =
745 PerfDataManager::create_counter(SUN_CI, "standardCompiles",
746 PerfData::U_Events, CHECK);
747
748 _perf_sum_osr_bytes_compiled =
749 PerfDataManager::create_counter(SUN_CI, "osrBytes",
750 PerfData::U_Bytes, CHECK);
751
752 _perf_sum_standard_bytes_compiled =
753 PerfDataManager::create_counter(SUN_CI, "standardBytes",
754 PerfData::U_Bytes, CHECK);
755
756 _perf_sum_nmethod_size =
757 PerfDataManager::create_counter(SUN_CI, "nmethodSize",
758 PerfData::U_Bytes, CHECK);
759
760 _perf_sum_nmethod_code_size =
761 PerfDataManager::create_counter(SUN_CI, "nmethodCodeSize",
762 PerfData::U_Bytes, CHECK);
763
764 _perf_last_method =
765 PerfDataManager::create_string_variable(SUN_CI, "lastMethod",
766 CompilerCounters::cmname_buffer_length,
767 "", CHECK);
768
769 _perf_last_failed_method =
770 PerfDataManager::create_string_variable(SUN_CI, "lastFailedMethod",
771 CompilerCounters::cmname_buffer_length,
772 "", CHECK);
773
774 _perf_last_invalidated_method =
775 PerfDataManager::create_string_variable(SUN_CI, "lastInvalidatedMethod",
776 CompilerCounters::cmname_buffer_length,
777 "", CHECK);
778
779 _perf_last_compile_type =
780 PerfDataManager::create_variable(SUN_CI, "lastType",
781 PerfData::U_None,
782 (jlong)CompileBroker::no_compile,
783 CHECK);
784
785 _perf_last_compile_size =
786 PerfDataManager::create_variable(SUN_CI, "lastSize",
787 PerfData::U_Bytes,
788 (jlong)CompileBroker::no_compile,
789 CHECK);
790
791
792 _perf_last_failed_type =
793 PerfDataManager::create_variable(SUN_CI, "lastFailedType",
794 PerfData::U_None,
795 (jlong)CompileBroker::no_compile,
796 CHECK);
797
798 _perf_last_invalidated_type =
799 PerfDataManager::create_variable(SUN_CI, "lastInvalidatedType",
800 PerfData::U_None,
801 (jlong)CompileBroker::no_compile,
802 CHECK);
803 }
804
805 _initialized = true;
806 }
807
808
809
810 // ------------------------------------------------------------------
811 // CompileBroker::make_compiler_thread
812 CompilerThread* CompileBroker::make_compiler_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, TRAPS) {
813 CompilerThread* compiler_thread = NULL;
814
815 klassOop k =
816 SystemDictionary::resolve_or_fail(vmSymbols::java_lang_Thread(),
817 true, CHECK_0);
818 instanceKlassHandle klass (THREAD, k);
819 instanceHandle thread_oop = klass->allocate_instance_handle(CHECK_0);
820 Handle string = java_lang_String::create_from_str(name, CHECK_0);
821
822 // Initialize thread_oop to put it into the system threadGroup
823 Handle thread_group (THREAD, Universe::system_thread_group());
824 JavaValue result(T_VOID);
825 JavaCalls::call_special(&result, thread_oop,
826 klass,
827 vmSymbols::object_initializer_name(),
828 vmSymbols::threadgroup_string_void_signature(),
829 thread_group,
830 string,
831 CHECK_0);
832
833 {
834 MutexLocker mu(Threads_lock, THREAD);
835 compiler_thread = new CompilerThread(queue, counters);
836 // At this point the new CompilerThread data-races with this startup
837 // thread (which I believe is the primoridal thread and NOT the VM
838 // thread). This means Java bytecodes being executed at startup can
839 // queue compile jobs which will run at whatever default priority the
840 // newly created CompilerThread runs at.
841
842
843 // At this point it may be possible that no osthread was created for the
844 // JavaThread due to lack of memory. We would have to throw an exception
845 // in that case. However, since this must work and we do not allow
846 // exceptions anyway, check and abort if this fails.
847
848 if (compiler_thread == NULL || compiler_thread->osthread() == NULL){
849 vm_exit_during_initialization("java.lang.OutOfMemoryError",
850 "unable to create new native thread");
851 }
852
853 java_lang_Thread::set_thread(thread_oop(), compiler_thread);
854
855 // Note that this only sets the JavaThread _priority field, which by
856 // definition is limited to Java priorities and not OS priorities.
857 // The os-priority is set in the CompilerThread startup code itself
858
859 java_lang_Thread::set_priority(thread_oop(), NearMaxPriority);
860
861 // Note that we cannot call os::set_priority because it expects Java
862 // priorities and we are *explicitly* using OS priorities so that it's
863 // possible to set the compiler thread priority higher than any Java
864 // thread.
865
866 int native_prio = CompilerThreadPriority;
867 if (native_prio == -1) {
868 if (UseCriticalCompilerThreadPriority) {
869 native_prio = os::java_to_os_priority[CriticalPriority];
870 } else {
871 native_prio = os::java_to_os_priority[NearMaxPriority];
872 }
873 }
874 os::set_native_priority(compiler_thread, native_prio);
875
876 java_lang_Thread::set_daemon(thread_oop());
877
878 compiler_thread->set_threadObj(thread_oop());
879 Threads::add(compiler_thread);
880 Thread::start(compiler_thread);
881 }
882
883 // Let go of Threads_lock before yielding
884 os::yield(); // make sure that the compiler thread is started early (especially helpful on SOLARIS)
885
886 return compiler_thread;
887 }
888
889
890 // ------------------------------------------------------------------
891 // CompileBroker::init_compiler_threads
892 //
893 // Initialize the compilation queue
894 void CompileBroker::init_compiler_threads(int c1_compiler_count, int c2_compiler_count) {
895 EXCEPTION_MARK;
896 #if !defined(ZERO) && !defined(SHARK)
897 assert(c2_compiler_count > 0 || c1_compiler_count > 0, "No compilers?");
898 #endif // !ZERO && !SHARK
899 if (c2_compiler_count > 0) {
900 _c2_method_queue = new CompileQueue("C2MethodQueue", MethodCompileQueue_lock);
901 }
902 if (c1_compiler_count > 0) {
903 _c1_method_queue = new CompileQueue("C1MethodQueue", MethodCompileQueue_lock);
904 }
905
906 int compiler_count = c1_compiler_count + c2_compiler_count;
907
908 _method_threads =
909 new (ResourceObj::C_HEAP) GrowableArray<CompilerThread*>(compiler_count, true);
910
911 char name_buffer[256];
912 for (int i = 0; i < c2_compiler_count; i++) {
913 // Create a name for our thread.
914 sprintf(name_buffer, "C2 CompilerThread%d", i);
915 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK);
916 CompilerThread* new_thread = make_compiler_thread(name_buffer, _c2_method_queue, counters, CHECK);
917 _method_threads->append(new_thread);
918 }
919
920 for (int i = c2_compiler_count; i < compiler_count; i++) {
921 // Create a name for our thread.
922 sprintf(name_buffer, "C1 CompilerThread%d", i);
923 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK);
924 CompilerThread* new_thread = make_compiler_thread(name_buffer, _c1_method_queue, counters, CHECK);
925 _method_threads->append(new_thread);
926 }
927
928 if (UsePerfData) {
929 PerfDataManager::create_constant(SUN_CI, "threads", PerfData::U_Bytes,
930 compiler_count, CHECK);
931 }
932 }
933
934 // ------------------------------------------------------------------
935 // CompileBroker::is_idle
936 bool CompileBroker::is_idle() {
937 if (_c2_method_queue != NULL && !_c2_method_queue->is_empty()) {
938 return false;
939 } else if (_c1_method_queue != NULL && !_c1_method_queue->is_empty()) {
940 return false;
941 } else {
942 int num_threads = _method_threads->length();
943 for (int i=0; i<num_threads; i++) {
944 if (_method_threads->at(i)->task() != NULL) {
945 return false;
946 }
947 }
948
949 // No pending or active compilations.
950 return true;
951 }
952 }
953
954
955 // ------------------------------------------------------------------
956 // CompileBroker::compile_method
957 //
958 // Request compilation of a method.
959 void CompileBroker::compile_method_base(methodHandle method,
960 int osr_bci,
961 int comp_level,
962 methodHandle hot_method,
963 int hot_count,
964 const char* comment,
965 TRAPS) {
966 // do nothing if compiler thread(s) is not available
967 if (!_initialized ) {
968 return;
969 }
970
971 guarantee(!method->is_abstract(), "cannot compile abstract methods");
972 assert(method->method_holder()->klass_part()->oop_is_instance(),
973 "sanity check");
974 assert(!instanceKlass::cast(method->method_holder())->is_not_initialized(),
975 "method holder must be initialized");
976
977 if (CIPrintRequests) {
978 tty->print("request: ");
979 method->print_short_name(tty);
980 if (osr_bci != InvocationEntryBci) {
981 tty->print(" osr_bci: %d", osr_bci);
982 }
983 tty->print(" comment: %s count: %d", comment, hot_count);
984 if (!hot_method.is_null()) {
985 tty->print(" hot: ");
986 if (hot_method() != method()) {
987 hot_method->print_short_name(tty);
988 } else {
989 tty->print("yes");
990 }
991 }
992 tty->cr();
993 }
994
995 // A request has been made for compilation. Before we do any
996 // real work, check to see if the method has been compiled
997 // in the meantime with a definitive result.
998 if (compilation_is_complete(method, osr_bci, comp_level)) {
999 return;
1000 }
1001
1002 #ifndef PRODUCT
1003 if (osr_bci != -1 && !FLAG_IS_DEFAULT(OSROnlyBCI)) {
1004 if ((OSROnlyBCI > 0) ? (OSROnlyBCI != osr_bci) : (-OSROnlyBCI == osr_bci)) {
1005 // Positive OSROnlyBCI means only compile that bci. Negative means don't compile that BCI.
1006 return;
1007 }
1008 }
1009 #endif
1010
1011 // If this method is already in the compile queue, then
1012 // we do not block the current thread.
1013 if (compilation_is_in_queue(method, osr_bci)) {
1014 // We may want to decay our counter a bit here to prevent
1015 // multiple denied requests for compilation. This is an
1016 // open compilation policy issue. Note: The other possibility,
1017 // in the case that this is a blocking compile request, is to have
1018 // all subsequent blocking requesters wait for completion of
1019 // ongoing compiles. Note that in this case we'll need a protocol
1020 // for freeing the associated compile tasks. [Or we could have
1021 // a single static monitor on which all these waiters sleep.]
1022 return;
1023 }
1024
1025 // If the requesting thread is holding the pending list lock
1026 // then we just return. We can't risk blocking while holding
1027 // the pending list lock or a 3-way deadlock may occur
1028 // between the reference handler thread, a GC (instigated
1029 // by a compiler thread), and compiled method registration.
1030 if (instanceRefKlass::owns_pending_list_lock(JavaThread::current())) {
1031 return;
1032 }
1033
1034 // Outputs from the following MutexLocker block:
1035 CompileTask* task = NULL;
1036 bool blocking = false;
1037 CompileQueue* queue = compile_queue(comp_level);
1038
1039 // Acquire our lock.
1040 {
1041 MutexLocker locker(queue->lock(), THREAD);
1042
1043 // Make sure the method has not slipped into the queues since
1044 // last we checked; note that those checks were "fast bail-outs".
1045 // Here we need to be more careful, see 14012000 below.
1046 if (compilation_is_in_queue(method, osr_bci)) {
1047 return;
1048 }
1049
1050 // We need to check again to see if the compilation has
1051 // completed. A previous compilation may have registered
1052 // some result.
1053 if (compilation_is_complete(method, osr_bci, comp_level)) {
1054 return;
1055 }
1056
1057 // We now know that this compilation is not pending, complete,
1058 // or prohibited. Assign a compile_id to this compilation
1059 // and check to see if it is in our [Start..Stop) range.
1060 uint compile_id = assign_compile_id(method, osr_bci);
1061 if (compile_id == 0) {
1062 // The compilation falls outside the allowed range.
1063 return;
1064 }
1065
1066 // Should this thread wait for completion of the compile?
1067 blocking = is_compile_blocking(method, osr_bci);
1068
1069 // We will enter the compilation in the queue.
1070 // 14012000: Note that this sets the queued_for_compile bits in
1071 // the target method. We can now reason that a method cannot be
1072 // queued for compilation more than once, as follows:
1073 // Before a thread queues a task for compilation, it first acquires
1074 // the compile queue lock, then checks if the method's queued bits
1075 // are set or it has already been compiled. Thus there can not be two
1076 // instances of a compilation task for the same method on the
1077 // compilation queue. Consider now the case where the compilation
1078 // thread has already removed a task for that method from the queue
1079 // and is in the midst of compiling it. In this case, the
1080 // queued_for_compile bits must be set in the method (and these
1081 // will be visible to the current thread, since the bits were set
1082 // under protection of the compile queue lock, which we hold now.
1083 // When the compilation completes, the compiler thread first sets
1084 // the compilation result and then clears the queued_for_compile
1085 // bits. Neither of these actions are protected by a barrier (or done
1086 // under the protection of a lock), so the only guarantee we have
1087 // (on machines with TSO (Total Store Order)) is that these values
1088 // will update in that order. As a result, the only combinations of
1089 // these bits that the current thread will see are, in temporal order:
1090 // <RESULT, QUEUE> :
1091 // <0, 1> : in compile queue, but not yet compiled
1092 // <1, 1> : compiled but queue bit not cleared
1093 // <1, 0> : compiled and queue bit cleared
1094 // Because we first check the queue bits then check the result bits,
1095 // we are assured that we cannot introduce a duplicate task.
1096 // Note that if we did the tests in the reverse order (i.e. check
1097 // result then check queued bit), we could get the result bit before
1098 // the compilation completed, and the queue bit after the compilation
1099 // completed, and end up introducing a "duplicate" (redundant) task.
1100 // In that case, the compiler thread should first check if a method
1101 // has already been compiled before trying to compile it.
1102 // NOTE: in the event that there are multiple compiler threads and
1103 // there is de-optimization/recompilation, things will get hairy,
1104 // and in that case it's best to protect both the testing (here) of
1105 // these bits, and their updating (here and elsewhere) under a
1106 // common lock.
1107 task = create_compile_task(queue,
1108 compile_id, method,
1109 osr_bci, comp_level,
1110 hot_method, hot_count, comment,
1111 blocking);
1112 }
1113
1114 if (blocking) {
1115 wait_for_completion(task);
1116 }
1117 }
1118
1119
1120 nmethod* CompileBroker::compile_method(methodHandle method, int osr_bci,
1121 int comp_level,
1122 methodHandle hot_method, int hot_count,
1123 const char* comment, TRAPS) {
1124 // make sure arguments make sense
1125 assert(method->method_holder()->klass_part()->oop_is_instance(), "not an instance method");
1126 assert(osr_bci == InvocationEntryBci || (0 <= osr_bci && osr_bci < method->code_size()), "bci out of range");
1127 assert(!method->is_abstract() && (osr_bci == InvocationEntryBci || !method->is_native()), "cannot compile abstract/native methods");
1128 assert(!instanceKlass::cast(method->method_holder())->is_not_initialized(), "method holder must be initialized");
1129
1130 if (!TieredCompilation) {
1131 comp_level = CompLevel_highest_tier;
1132 }
1133
1134 // return quickly if possible
1135
1136 // lock, make sure that the compilation
1137 // isn't prohibited in a straightforward way.
1138
1139 if (compiler(comp_level) == NULL || compilation_is_prohibited(method, osr_bci, comp_level)) {
1140 return NULL;
1141 }
1142
1143 if (osr_bci == InvocationEntryBci) {
1144 // standard compilation
1145 nmethod* method_code = method->code();
1146 if (method_code != NULL) {
1147 if (compilation_is_complete(method, osr_bci, comp_level)) {
1148 return method_code;
1149 }
1150 }
1151 if (method->is_not_compilable(comp_level)) return NULL;
1152
1153 if (UseCodeCacheFlushing) {
1154 nmethod* saved = CodeCache::find_and_remove_saved_code(method());
1155 if (saved != NULL) {
1156 method->set_code(method, saved);
1157 return saved;
1158 }
1159 }
1160
1161 } else {
1162 // osr compilation
1163 #ifndef TIERED
1164 // seems like an assert of dubious value
1165 assert(comp_level == CompLevel_highest_tier,
1166 "all OSR compiles are assumed to be at a single compilation lavel");
1167 #endif // TIERED
1168 // We accept a higher level osr method
1169 nmethod* nm = method->lookup_osr_nmethod_for(osr_bci, comp_level, false);
1170 if (nm != NULL) return nm;
1171 if (method->is_not_osr_compilable()) return NULL;
1172 }
1173
1174 assert(!HAS_PENDING_EXCEPTION, "No exception should be present");
1175 // some prerequisites that are compiler specific
1176 if (compiler(comp_level)->is_c2() || compiler(comp_level)->is_shark()) {
1177 method->constants()->resolve_string_constants(CHECK_0);
1178 // Resolve all classes seen in the signature of the method
1179 // we are compiling.
1180 methodOopDesc::load_signature_classes(method, CHECK_0);
1181 }
1182
1183 // If the method is native, do the lookup in the thread requesting
1184 // the compilation. Native lookups can load code, which is not
1185 // permitted during compilation.
1186 //
1187 // Note: A native method implies non-osr compilation which is
1188 // checked with an assertion at the entry of this method.
1189 if (method->is_native()) {
1190 bool in_base_library;
1191 address adr = NativeLookup::lookup(method, in_base_library, THREAD);
1192 if (HAS_PENDING_EXCEPTION) {
1193 // In case of an exception looking up the method, we just forget
1194 // about it. The interpreter will kick-in and throw the exception.
1195 method->set_not_compilable(); // implies is_not_osr_compilable()
1196 CLEAR_PENDING_EXCEPTION;
1197 return NULL;
1198 }
1199 assert(method->has_native_function(), "must have native code by now");
1200 }
1201
1202 // RedefineClasses() has replaced this method; just return
1203 if (method->is_old()) {
1204 return NULL;
1205 }
1206
1207 // JVMTI -- post_compile_event requires jmethod_id() that may require
1208 // a lock the compiling thread can not acquire. Prefetch it here.
1209 if (JvmtiExport::should_post_compiled_method_load()) {
1210 method->jmethod_id();
1211 }
1212
1213 // If the compiler is shut off due to code cache flushing or otherwise,
1214 // fail out now so blocking compiles dont hang the java thread
1215 if (!should_compile_new_jobs() || (UseCodeCacheFlushing && CodeCache::needs_flushing())) {
1216 CompilationPolicy::policy()->delay_compilation(method());
1217 return NULL;
1218 }
1219
1220 // do the compilation
1221 if (method->is_native()) {
1222 if (!PreferInterpreterNativeStubs) {
1223 // Acquire our lock.
1224 int compile_id;
1225 {
1226 MutexLocker locker(MethodCompileQueue_lock, THREAD);
1227 compile_id = assign_compile_id(method, standard_entry_bci);
1228 }
1229 (void) AdapterHandlerLibrary::create_native_wrapper(method, compile_id);
1230 } else {
1231 return NULL;
1232 }
1233 } else {
1234 compile_method_base(method, osr_bci, comp_level, hot_method, hot_count, comment, CHECK_0);
1235 }
1236
1237 // return requested nmethod
1238 // We accept a higher level osr method
1239 return osr_bci == InvocationEntryBci ? method->code() : method->lookup_osr_nmethod_for(osr_bci, comp_level, false);
1240 }
1241
1242
1243 // ------------------------------------------------------------------
1244 // CompileBroker::compilation_is_complete
1245 //
1246 // See if compilation of this method is already complete.
1247 bool CompileBroker::compilation_is_complete(methodHandle method,
1248 int osr_bci,
1249 int comp_level) {
1250 bool is_osr = (osr_bci != standard_entry_bci);
1251 if (is_osr) {
1252 if (method->is_not_osr_compilable()) {
1253 return true;
1254 } else {
1255 nmethod* result = method->lookup_osr_nmethod_for(osr_bci, comp_level, true);
1256 return (result != NULL);
1257 }
1258 } else {
1259 if (method->is_not_compilable(comp_level)) {
1260 return true;
1261 } else {
1262 nmethod* result = method->code();
1263 if (result == NULL) return false;
1264 return comp_level == result->comp_level();
1265 }
1266 }
1267 }
1268
1269
1270 // ------------------------------------------------------------------
1271 // CompileBroker::compilation_is_in_queue
1272 //
1273 // See if this compilation is already requested.
1274 //
1275 // Implementation note: there is only a single "is in queue" bit
1276 // for each method. This means that the check below is overly
1277 // conservative in the sense that an osr compilation in the queue
1278 // will block a normal compilation from entering the queue (and vice
1279 // versa). This can be remedied by a full queue search to disambiguate
1280 // cases. If it is deemed profitible, this may be done.
1281 bool CompileBroker::compilation_is_in_queue(methodHandle method,
1282 int osr_bci) {
1283 return method->queued_for_compilation();
1284 }
1285
1286 // ------------------------------------------------------------------
1287 // CompileBroker::compilation_is_prohibited
1288 //
1289 // See if this compilation is not allowed.
1290 bool CompileBroker::compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level) {
1291 bool is_native = method->is_native();
1292 // Some compilers may not support the compilation of natives.
1293 if (is_native &&
1294 (!CICompileNatives || !compiler(comp_level)->supports_native())) {
1295 method->set_not_compilable_quietly(comp_level);
1296 return true;
1297 }
1298
1299 bool is_osr = (osr_bci != standard_entry_bci);
1300 // Some compilers may not support on stack replacement.
1301 if (is_osr &&
1302 (!CICompileOSR || !compiler(comp_level)->supports_osr())) {
1303 method->set_not_osr_compilable();
1304 return true;
1305 }
1306
1307 // The method may be explicitly excluded by the user.
1308 bool quietly;
1309 if (CompilerOracle::should_exclude(method, quietly)) {
1310 if (!quietly) {
1311 // This does not happen quietly...
1312 ResourceMark rm;
1313 tty->print("### Excluding %s:%s",
1314 method->is_native() ? "generation of native wrapper" : "compile",
1315 (method->is_static() ? " static" : ""));
1316 method->print_short_name(tty);
1317 tty->cr();
1318 }
1319 method->set_not_compilable_quietly();
1320 }
1321
1322 return false;
1323 }
1324
1325
1326 // ------------------------------------------------------------------
1327 // CompileBroker::assign_compile_id
1328 //
1329 // Assign a serialized id number to this compilation request. If the
1330 // number falls out of the allowed range, return a 0. OSR
1331 // compilations may be numbered separately from regular compilations
1332 // if certain debugging flags are used.
1333 uint CompileBroker::assign_compile_id(methodHandle method, int osr_bci) {
1334 assert(MethodCompileQueue_lock->owner() == Thread::current(),
1335 "must hold the compilation queue lock");
1336 bool is_osr = (osr_bci != standard_entry_bci);
1337 uint id;
1338 if (CICountOSR && is_osr) {
1339 id = ++_osr_compilation_id;
1340 if ((uint)CIStartOSR <= id && id < (uint)CIStopOSR) {
1341 return id;
1342 }
1343 } else {
1344 id = ++_compilation_id;
1345 if ((uint)CIStart <= id && id < (uint)CIStop) {
1346 return id;
1347 }
1348 }
1349
1350 // Method was not in the appropriate compilation range.
1351 method->set_not_compilable_quietly();
1352 return 0;
1353 }
1354
1355
1356 // ------------------------------------------------------------------
1357 // CompileBroker::is_compile_blocking
1358 //
1359 // Should the current thread be blocked until this compilation request
1360 // has been fulfilled?
1361 bool CompileBroker::is_compile_blocking(methodHandle method, int osr_bci) {
1362 assert(!instanceRefKlass::owns_pending_list_lock(JavaThread::current()), "possible deadlock");
1363 return !BackgroundCompilation;
1364 }
1365
1366
1367 // ------------------------------------------------------------------
1368 // CompileBroker::preload_classes
1369 void CompileBroker::preload_classes(methodHandle method, TRAPS) {
1370 // Move this code over from c1_Compiler.cpp
1371 ShouldNotReachHere();
1372 }
1373
1374
1375 // ------------------------------------------------------------------
1376 // CompileBroker::create_compile_task
1377 //
1378 // Create a CompileTask object representing the current request for
1379 // compilation. Add this task to the queue.
1380 CompileTask* CompileBroker::create_compile_task(CompileQueue* queue,
1381 int compile_id,
1382 methodHandle method,
1383 int osr_bci,
1384 int comp_level,
1385 methodHandle hot_method,
1386 int hot_count,
1387 const char* comment,
1388 bool blocking) {
1389 CompileTask* new_task = allocate_task();
1390 new_task->initialize(compile_id, method, osr_bci, comp_level,
1391 hot_method, hot_count, comment,
1392 blocking);
1393 queue->add(new_task);
1394 return new_task;
1395 }
1396
1397
1398 // ------------------------------------------------------------------
1399 // CompileBroker::allocate_task
1400 //
1401 // Allocate a CompileTask, from the free list if possible.
1402 CompileTask* CompileBroker::allocate_task() {
1403 MutexLocker locker(CompileTaskAlloc_lock);
1404 CompileTask* task = NULL;
1405 if (_task_free_list != NULL) {
1406 task = _task_free_list;
1407 _task_free_list = task->next();
1408 task->set_next(NULL);
1409 } else {
1410 task = new CompileTask();
1411 task->set_next(NULL);
1412 }
1413 return task;
1414 }
1415
1416
1417 // ------------------------------------------------------------------
1418 // CompileBroker::free_task
1419 //
1420 // Add a task to the free list.
1421 void CompileBroker::free_task(CompileTask* task) {
1422 MutexLocker locker(CompileTaskAlloc_lock);
1423 task->free();
1424 task->set_next(_task_free_list);
1425 _task_free_list = task;
1426 }
1427
1428
1429 // ------------------------------------------------------------------
1430 // CompileBroker::wait_for_completion
1431 //
1432 // Wait for the given method CompileTask to complete.
1433 void CompileBroker::wait_for_completion(CompileTask* task) {
1434 if (CIPrintCompileQueue) {
1435 tty->print_cr("BLOCKING FOR COMPILE");
1436 }
1437
1438 assert(task->is_blocking(), "can only wait on blocking task");
1439
1440 JavaThread *thread = JavaThread::current();
1441 thread->set_blocked_on_compilation(true);
1442
1443 methodHandle method(thread,
1444 (methodOop)JNIHandles::resolve(task->method_handle()));
1445 {
1446 MutexLocker waiter(task->lock(), thread);
1447
1448 while (!task->is_complete())
1449 task->lock()->wait();
1450 }
1451 // It is harmless to check this status without the lock, because
1452 // completion is a stable property (until the task object is recycled).
1453 assert(task->is_complete(), "Compilation should have completed");
1454 assert(task->code_handle() == NULL, "must be reset");
1455
1456 thread->set_blocked_on_compilation(false);
1457
1458 // By convention, the waiter is responsible for recycling a
1459 // blocking CompileTask. Since there is only one waiter ever
1460 // waiting on a CompileTask, we know that no one else will
1461 // be using this CompileTask; we can free it.
1462 free_task(task);
1463 }
1464
1465 // ------------------------------------------------------------------
1466 // CompileBroker::compiler_thread_loop
1467 //
1468 // The main loop run by a CompilerThread.
1469 void CompileBroker::compiler_thread_loop() {
1470 CompilerThread* thread = CompilerThread::current();
1471 CompileQueue* queue = thread->queue();
1472
1473 // For the thread that initializes the ciObjectFactory
1474 // this resource mark holds all the shared objects
1475 ResourceMark rm;
1476
1477 // First thread to get here will initialize the compiler interface
1478
1479 if (!ciObjectFactory::is_initialized()) {
1480 ASSERT_IN_VM;
1481 MutexLocker only_one (CompileThread_lock, thread);
1482 if (!ciObjectFactory::is_initialized()) {
1483 ciObjectFactory::initialize();
1484 }
1485 }
1486
1487 // Open a log.
1488 if (LogCompilation) {
1489 init_compiler_thread_log();
1490 }
1491 CompileLog* log = thread->log();
1492 if (log != NULL) {
1493 log->begin_elem("start_compile_thread thread='" UINTX_FORMAT "' process='%d'",
1494 os::current_thread_id(),
1495 os::current_process_id());
1496 log->stamp();
1497 log->end_elem();
1498 }
1499
1500 while (true) {
1501 {
1502 // We need this HandleMark to avoid leaking VM handles.
1503 HandleMark hm(thread);
1504
1505 if (CodeCache::largest_free_block() < CodeCacheMinimumFreeSpace) {
1506 // the code cache is really full
1507 handle_full_code_cache();
1508 } else if (UseCodeCacheFlushing && CodeCache::needs_flushing()) {
1509 // Attempt to start cleaning the code cache while there is still a little headroom
1510 NMethodSweeper::handle_full_code_cache(false);
1511 }
1512
1513 CompileTask* task = queue->get();
1514
1515 // Give compiler threads an extra quanta. They tend to be bursty and
1516 // this helps the compiler to finish up the job.
1517 if( CompilerThreadHintNoPreempt )
1518 os::hint_no_preempt();
1519
1520 // trace per thread time and compile statistics
1521 CompilerCounters* counters = ((CompilerThread*)thread)->counters();
1522 PerfTraceTimedEvent(counters->time_counter(), counters->compile_counter());
1523
1524 // Assign the task to the current thread. Mark this compilation
1525 // thread as active for the profiler.
1526 CompileTaskWrapper ctw(task);
1527 nmethodLocker result_handle; // (handle for the nmethod produced by this task)
1528 task->set_code_handle(&result_handle);
1529 methodHandle method(thread,
1530 (methodOop)JNIHandles::resolve(task->method_handle()));
1531
1532 // Never compile a method if breakpoints are present in it
1533 if (method()->number_of_breakpoints() == 0) {
1534 // Compile the method.
1535 if ((UseCompiler || AlwaysCompileLoopMethods) && CompileBroker::should_compile_new_jobs()) {
1536 #ifdef COMPILER1
1537 // Allow repeating compilations for the purpose of benchmarking
1538 // compile speed. This is not useful for customers.
1539 if (CompilationRepeat != 0) {
1540 int compile_count = CompilationRepeat;
1541 while (compile_count > 0) {
1542 invoke_compiler_on_method(task);
1543 nmethod* nm = method->code();
1544 if (nm != NULL) {
1545 nm->make_zombie();
1546 method->clear_code();
1547 }
1548 compile_count--;
1549 }
1550 }
1551 #endif /* COMPILER1 */
1552 invoke_compiler_on_method(task);
1553 } else {
1554 // After compilation is disabled, remove remaining methods from queue
1555 method->clear_queued_for_compilation();
1556 }
1557 }
1558 }
1559 }
1560 }
1561
1562
1563 // ------------------------------------------------------------------
1564 // CompileBroker::init_compiler_thread_log
1565 //
1566 // Set up state required by +LogCompilation.
1567 void CompileBroker::init_compiler_thread_log() {
1568 CompilerThread* thread = CompilerThread::current();
1569 char fileBuf[4*K];
1570 FILE* fp = NULL;
1571 char* file = NULL;
1572 intx thread_id = os::current_thread_id();
1573 for (int try_temp_dir = 1; try_temp_dir >= 0; try_temp_dir--) {
1574 const char* dir = (try_temp_dir ? os::get_temp_directory() : NULL);
1575 if (dir == NULL) {
1576 jio_snprintf(fileBuf, sizeof(fileBuf), "hs_c" UINTX_FORMAT "_pid%u.log",
1577 thread_id, os::current_process_id());
1578 } else {
1579 jio_snprintf(fileBuf, sizeof(fileBuf),
1580 "%s%shs_c" UINTX_FORMAT "_pid%u.log", dir,
1581 os::file_separator(), thread_id, os::current_process_id());
1582 }
1583 fp = fopen(fileBuf, "at");
1584 if (fp != NULL) {
1585 file = NEW_C_HEAP_ARRAY(char, strlen(fileBuf)+1);
1586 strcpy(file, fileBuf);
1587 break;
1588 }
1589 }
1590 if (fp == NULL) {
1591 warning("Cannot open log file: %s", fileBuf);
1592 } else {
1593 if (LogCompilation && Verbose)
1594 tty->print_cr("Opening compilation log %s", file);
1595 CompileLog* log = new(ResourceObj::C_HEAP) CompileLog(file, fp, thread_id);
1596 thread->init_log(log);
1597
1598 if (xtty != NULL) {
1599 ttyLocker ttyl;
1600
1601 // Record any per thread log files
1602 xtty->elem("thread_logfile thread='%d' filename='%s'", thread_id, file);
1603 }
1604 }
1605 }
1606
1607 // ------------------------------------------------------------------
1608 // CompileBroker::set_should_block
1609 //
1610 // Set _should_block.
1611 // Call this from the VM, with Threads_lock held and a safepoint requested.
1612 void CompileBroker::set_should_block() {
1613 assert(Threads_lock->owner() == Thread::current(), "must have threads lock");
1614 assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint already");
1615 #ifndef PRODUCT
1616 if (PrintCompilation && (Verbose || WizardMode))
1617 tty->print_cr("notifying compiler thread pool to block");
1618 #endif
1619 _should_block = true;
1620 }
1621
1622 // ------------------------------------------------------------------
1623 // CompileBroker::maybe_block
1624 //
1625 // Call this from the compiler at convenient points, to poll for _should_block.
1626 void CompileBroker::maybe_block() {
1627 if (_should_block) {
1628 #ifndef PRODUCT
1629 if (PrintCompilation && (Verbose || WizardMode))
1630 tty->print_cr("compiler thread " INTPTR_FORMAT " poll detects block request", Thread::current());
1631 #endif
1632 ThreadInVMfromNative tivfn(JavaThread::current());
1633 }
1634 }
1635
1636
1637 // ------------------------------------------------------------------
1638 // CompileBroker::invoke_compiler_on_method
1639 //
1640 // Compile a method.
1641 //
1642 void CompileBroker::invoke_compiler_on_method(CompileTask* task) {
1643 if (PrintCompilation) {
1644 ResourceMark rm;
1645 task->print_line();
1646 }
1647 elapsedTimer time;
1648
1649 CompilerThread* thread = CompilerThread::current();
1650 ResourceMark rm(thread);
1651
1652 // Common flags.
1653 uint compile_id = task->compile_id();
1654 int osr_bci = task->osr_bci();
1655 bool is_osr = (osr_bci != standard_entry_bci);
1656 bool should_log = (thread->log() != NULL);
1657 bool should_break = false;
1658 {
1659 // create the handle inside it's own block so it can't
1660 // accidentally be referenced once the thread transitions to
1661 // native. The NoHandleMark before the transition should catch
1662 // any cases where this occurs in the future.
1663 methodHandle method(thread,
1664 (methodOop)JNIHandles::resolve(task->method_handle()));
1665 should_break = check_break_at(method, compile_id, is_osr);
1666 if (should_log && !CompilerOracle::should_log(method)) {
1667 should_log = false;
1668 }
1669 assert(!method->is_native(), "no longer compile natives");
1670
1671 // Save information about this method in case of failure.
1672 set_last_compile(thread, method, is_osr, task->comp_level());
1673
1674 DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler(task->comp_level()), method);
1675 }
1676
1677 // Allocate a new set of JNI handles.
1678 push_jni_handle_block();
1679 jobject target_handle = JNIHandles::make_local(thread, JNIHandles::resolve(task->method_handle()));
1680 int compilable = ciEnv::MethodCompilable;
1681 {
1682 int system_dictionary_modification_counter;
1683 {
1684 MutexLocker locker(Compile_lock, thread);
1685 system_dictionary_modification_counter = SystemDictionary::number_of_modifications();
1686 }
1687
1688 NoHandleMark nhm;
1689 ThreadToNativeFromVM ttn(thread);
1690
1691 ciEnv ci_env(task, system_dictionary_modification_counter);
1692 if (should_break) {
1693 ci_env.set_break_at_compile(true);
1694 }
1695 if (should_log) {
1696 ci_env.set_log(thread->log());
1697 }
1698 assert(thread->env() == &ci_env, "set by ci_env");
1699 // The thread-env() field is cleared in ~CompileTaskWrapper.
1700
1701 // Cache Jvmti state
1702 ci_env.cache_jvmti_state();
1703
1704 // Cache DTrace flags
1705 ci_env.cache_dtrace_flags();
1706
1707 ciMethod* target = ci_env.get_method_from_handle(target_handle);
1708
1709 TraceTime t1("compilation", &time);
1710
1711 compiler(task->comp_level())->compile_method(&ci_env, target, osr_bci);
1712
1713 if (!ci_env.failing() && task->code() == NULL) {
1714 //assert(false, "compiler should always document failure");
1715 // The compiler elected, without comment, not to register a result.
1716 // Do not attempt further compilations of this method.
1717 ci_env.record_method_not_compilable("compile failed", !TieredCompilation);
1718 }
1719
1720 if (ci_env.failing()) {
1721 // Copy this bit to the enclosing block:
1722 compilable = ci_env.compilable();
1723 if (PrintCompilation) {
1724 const char* reason = ci_env.failure_reason();
1725 if (compilable == ciEnv::MethodCompilable_not_at_tier) {
1726 tty->print_cr("%4d COMPILE SKIPPED: %s (retry at different tier)", compile_id, reason);
1727 } else if (compilable == ciEnv::MethodCompilable_never) {
1728 tty->print_cr("%4d COMPILE SKIPPED: %s (not retryable)", compile_id, reason);
1729 } else if (compilable == ciEnv::MethodCompilable) {
1730 tty->print_cr("%4d COMPILE SKIPPED: %s", compile_id, reason);
1731 }
1732 }
1733 } else {
1734 task->mark_success();
1735 task->set_num_inlined_bytecodes(ci_env.num_inlined_bytecodes());
1736 }
1737 }
1738 pop_jni_handle_block();
1739
1740 methodHandle method(thread,
1741 (methodOop)JNIHandles::resolve(task->method_handle()));
1742
1743 DTRACE_METHOD_COMPILE_END_PROBE(compiler(task->comp_level()), method, task->is_success());
1744
1745 collect_statistics(thread, time, task);
1746
1747 if (PrintCompilation && PrintCompilation2) {
1748 tty->print("%7d ", (int) tty->time_stamp().milliseconds()); // print timestamp
1749 tty->print("%4d ", compile_id); // print compilation number
1750 tty->print("%s ", (is_osr ? "%" : " "));
1751 int code_size = (task->code() == NULL) ? 0 : task->code()->total_size();
1752 tty->print_cr("size: %d time: %d inlined: %d bytes", code_size, (int)time.milliseconds(), task->num_inlined_bytecodes());
1753 }
1754
1755 if (compilable == ciEnv::MethodCompilable_never) {
1756 if (is_osr) {
1757 method->set_not_osr_compilable();
1758 } else {
1759 method->set_not_compilable_quietly();
1760 }
1761 } else if (compilable == ciEnv::MethodCompilable_not_at_tier) {
1762 method->set_not_compilable_quietly(task->comp_level());
1763 }
1764
1765 // Note that the queued_for_compilation bits are cleared without
1766 // protection of a mutex. [They were set by the requester thread,
1767 // when adding the task to the complie queue -- at which time the
1768 // compile queue lock was held. Subsequently, we acquired the compile
1769 // queue lock to get this task off the compile queue; thus (to belabour
1770 // the point somewhat) our clearing of the bits must be occurring
1771 // only after the setting of the bits. See also 14012000 above.
1772 method->clear_queued_for_compilation();
1773
1774 #ifdef ASSERT
1775 if (CollectedHeap::fired_fake_oom()) {
1776 // The current compile received a fake OOM during compilation so
1777 // go ahead and exit the VM since the test apparently succeeded
1778 tty->print_cr("*** Shutting down VM after successful fake OOM");
1779 vm_exit(0);
1780 }
1781 #endif
1782 }
1783
1784 // ------------------------------------------------------------------
1785 // CompileBroker::handle_full_code_cache
1786 //
1787 // The CodeCache is full. Print out warning and disable compilation or
1788 // try code cache cleaning so compilation can continue later.
1789 void CompileBroker::handle_full_code_cache() {
1790 UseInterpreter = true;
1791 if (UseCompiler || AlwaysCompileLoopMethods ) {
1792 if (xtty != NULL) {
1793 stringStream s;
1794 // Dump code cache state into a buffer before locking the tty,
1795 // because log_state() will use locks causing lock conflicts.
1796 CodeCache::log_state(&s);
1797 // Lock to prevent tearing
1798 ttyLocker ttyl;
1799 xtty->begin_elem("code_cache_full");
1800 xtty->print(s.as_string());
1801 xtty->stamp();
1802 xtty->end_elem();
1803 }
1804 warning("CodeCache is full. Compiler has been disabled.");
1805 warning("Try increasing the code cache size using -XX:ReservedCodeCacheSize=");
1806 CodeCache::print_bounds(tty);
1807 #ifndef PRODUCT
1808 if (CompileTheWorld || ExitOnFullCodeCache) {
1809 before_exit(JavaThread::current());
1810 exit_globals(); // will delete tty
1811 vm_direct_exit(CompileTheWorld ? 0 : 1);
1812 }
1813 #endif
1814 if (UseCodeCacheFlushing) {
1815 NMethodSweeper::handle_full_code_cache(true);
1816 } else {
1817 UseCompiler = false;
1818 AlwaysCompileLoopMethods = false;
1819 }
1820 }
1821 }
1822
1823 // ------------------------------------------------------------------
1824 // CompileBroker::set_last_compile
1825 //
1826 // Record this compilation for debugging purposes.
1827 void CompileBroker::set_last_compile(CompilerThread* thread, methodHandle method, bool is_osr, int comp_level) {
1828 ResourceMark rm;
1829 char* method_name = method->name()->as_C_string();
1830 strncpy(_last_method_compiled, method_name, CompileBroker::name_buffer_length);
1831 char current_method[CompilerCounters::cmname_buffer_length];
1832 size_t maxLen = CompilerCounters::cmname_buffer_length;
1833
1834 if (UsePerfData) {
1835 const char* class_name = method->method_holder()->klass_part()->name()->as_C_string();
1836
1837 size_t s1len = strlen(class_name);
1838 size_t s2len = strlen(method_name);
1839
1840 // check if we need to truncate the string
1841 if (s1len + s2len + 2 > maxLen) {
1842
1843 // the strategy is to lop off the leading characters of the
1844 // class name and the trailing characters of the method name.
1845
1846 if (s2len + 2 > maxLen) {
1847 // lop of the entire class name string, let snprintf handle
1848 // truncation of the method name.
1849 class_name += s1len; // null string
1850 }
1851 else {
1852 // lop off the extra characters from the front of the class name
1853 class_name += ((s1len + s2len + 2) - maxLen);
1854 }
1855 }
1856
1857 jio_snprintf(current_method, maxLen, "%s %s", class_name, method_name);
1858 }
1859
1860 if (CICountOSR && is_osr) {
1861 _last_compile_type = osr_compile;
1862 } else {
1863 _last_compile_type = normal_compile;
1864 }
1865 _last_compile_level = comp_level;
1866
1867 if (UsePerfData) {
1868 CompilerCounters* counters = thread->counters();
1869 counters->set_current_method(current_method);
1870 counters->set_compile_type((jlong)_last_compile_type);
1871 }
1872 }
1873
1874
1875 // ------------------------------------------------------------------
1876 // CompileBroker::push_jni_handle_block
1877 //
1878 // Push on a new block of JNI handles.
1879 void CompileBroker::push_jni_handle_block() {
1880 JavaThread* thread = JavaThread::current();
1881
1882 // Allocate a new block for JNI handles.
1883 // Inlined code from jni_PushLocalFrame()
1884 JNIHandleBlock* java_handles = thread->active_handles();
1885 JNIHandleBlock* compile_handles = JNIHandleBlock::allocate_block(thread);
1886 assert(compile_handles != NULL && java_handles != NULL, "should not be NULL");
1887 compile_handles->set_pop_frame_link(java_handles); // make sure java handles get gc'd.
1888 thread->set_active_handles(compile_handles);
1889 }
1890
1891
1892 // ------------------------------------------------------------------
1893 // CompileBroker::pop_jni_handle_block
1894 //
1895 // Pop off the current block of JNI handles.
1896 void CompileBroker::pop_jni_handle_block() {
1897 JavaThread* thread = JavaThread::current();
1898
1899 // Release our JNI handle block
1900 JNIHandleBlock* compile_handles = thread->active_handles();
1901 JNIHandleBlock* java_handles = compile_handles->pop_frame_link();
1902 thread->set_active_handles(java_handles);
1903 compile_handles->set_pop_frame_link(NULL);
1904 JNIHandleBlock::release_block(compile_handles, thread); // may block
1905 }
1906
1907
1908 // ------------------------------------------------------------------
1909 // CompileBroker::check_break_at
1910 //
1911 // Should the compilation break at the current compilation.
1912 bool CompileBroker::check_break_at(methodHandle method, int compile_id, bool is_osr) {
1913 if (CICountOSR && is_osr && (compile_id == CIBreakAtOSR)) {
1914 return true;
1915 } else if( CompilerOracle::should_break_at(method) ) { // break when compiling
1916 return true;
1917 } else {
1918 return (compile_id == CIBreakAt);
1919 }
1920 }
1921
1922 // ------------------------------------------------------------------
1923 // CompileBroker::collect_statistics
1924 //
1925 // Collect statistics about the compilation.
1926
1927 void CompileBroker::collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task) {
1928 bool success = task->is_success();
1929 methodHandle method (thread, (methodOop)JNIHandles::resolve(task->method_handle()));
1930 uint compile_id = task->compile_id();
1931 bool is_osr = (task->osr_bci() != standard_entry_bci);
1932 nmethod* code = task->code();
1933 CompilerCounters* counters = thread->counters();
1934
1935 assert(code == NULL || code->is_locked_by_vm(), "will survive the MutexLocker");
1936 MutexLocker locker(CompileStatistics_lock);
1937
1938 // _perf variables are production performance counters which are
1939 // updated regardless of the setting of the CITime and CITimeEach flags
1940 //
1941 if (!success) {
1942 _total_bailout_count++;
1943 if (UsePerfData) {
1944 _perf_last_failed_method->set_value(counters->current_method());
1945 _perf_last_failed_type->set_value(counters->compile_type());
1946 _perf_total_bailout_count->inc();
1947 }
1948 } else if (code == NULL) {
1949 if (UsePerfData) {
1950 _perf_last_invalidated_method->set_value(counters->current_method());
1951 _perf_last_invalidated_type->set_value(counters->compile_type());
1952 _perf_total_invalidated_count->inc();
1953 }
1954 _total_invalidated_count++;
1955 } else {
1956 // Compilation succeeded
1957
1958 // update compilation ticks - used by the implementation of
1959 // java.lang.management.CompilationMBean
1960 _perf_total_compilation->inc(time.ticks());
1961
1962 if (CITime) {
1963 _t_total_compilation.add(time);
1964 if (is_osr) {
1965 _t_osr_compilation.add(time);
1966 _sum_osr_bytes_compiled += method->code_size() + task->num_inlined_bytecodes();
1967 } else {
1968 _t_standard_compilation.add(time);
1969 _sum_standard_bytes_compiled += method->code_size() + task->num_inlined_bytecodes();
1970 }
1971 }
1972
1973 if (UsePerfData) {
1974 // save the name of the last method compiled
1975 _perf_last_method->set_value(counters->current_method());
1976 _perf_last_compile_type->set_value(counters->compile_type());
1977 _perf_last_compile_size->set_value(method->code_size() +
1978 task->num_inlined_bytecodes());
1979 if (is_osr) {
1980 _perf_osr_compilation->inc(time.ticks());
1981 _perf_sum_osr_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes());
1982 } else {
1983 _perf_standard_compilation->inc(time.ticks());
1984 _perf_sum_standard_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes());
1985 }
1986 }
1987
1988 if (CITimeEach) {
1989 float bytes_per_sec = 1.0 * (method->code_size() + task->num_inlined_bytecodes()) / time.seconds();
1990 tty->print_cr("%3d seconds: %f bytes/sec : %f (bytes %d + %d inlined)",
1991 compile_id, time.seconds(), bytes_per_sec, method->code_size(), task->num_inlined_bytecodes());
1992 }
1993
1994 // Collect counts of successful compilations
1995 _sum_nmethod_size += code->total_size();
1996 _sum_nmethod_code_size += code->insts_size();
1997 _total_compile_count++;
1998
1999 if (UsePerfData) {
2000 _perf_sum_nmethod_size->inc( code->total_size());
2001 _perf_sum_nmethod_code_size->inc(code->insts_size());
2002 _perf_total_compile_count->inc();
2003 }
2004
2005 if (is_osr) {
2006 if (UsePerfData) _perf_total_osr_compile_count->inc();
2007 _total_osr_compile_count++;
2008 } else {
2009 if (UsePerfData) _perf_total_standard_compile_count->inc();
2010 _total_standard_compile_count++;
2011 }
2012 }
2013 // set the current method for the thread to null
2014 if (UsePerfData) counters->set_current_method("");
2015 }
2016
2017
2018
2019 void CompileBroker::print_times() {
2020 tty->cr();
2021 tty->print_cr("Accumulated compiler times (for compiled methods only)");
2022 tty->print_cr("------------------------------------------------");
2023 //0000000000111111111122222222223333333333444444444455555555556666666666
2024 //0123456789012345678901234567890123456789012345678901234567890123456789
2025 tty->print_cr(" Total compilation time : %6.3f s", CompileBroker::_t_total_compilation.seconds());
2026 tty->print_cr(" Standard compilation : %6.3f s, Average : %2.3f",
2027 CompileBroker::_t_standard_compilation.seconds(),
2028 CompileBroker::_t_standard_compilation.seconds() / CompileBroker::_total_standard_compile_count);
2029 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);
2030
2031 if (compiler(CompLevel_simple) != NULL) {
2032 compiler(CompLevel_simple)->print_timers();
2033 }
2034 if (compiler(CompLevel_full_optimization) != NULL) {
2035 compiler(CompLevel_full_optimization)->print_timers();
2036 }
2037 tty->cr();
2038 int tcb = CompileBroker::_sum_osr_bytes_compiled + CompileBroker::_sum_standard_bytes_compiled;
2039 tty->print_cr(" Total compiled bytecodes : %6d bytes", tcb);
2040 tty->print_cr(" Standard compilation : %6d bytes", CompileBroker::_sum_standard_bytes_compiled);
2041 tty->print_cr(" On stack replacement : %6d bytes", CompileBroker::_sum_osr_bytes_compiled);
2042 int bps = (int)(tcb / CompileBroker::_t_total_compilation.seconds());
2043 tty->print_cr(" Average compilation speed: %6d bytes/s", bps);
2044 tty->cr();
2045 tty->print_cr(" nmethod code size : %6d bytes", CompileBroker::_sum_nmethod_code_size);
2046 tty->print_cr(" nmethod total size : %6d bytes", CompileBroker::_sum_nmethod_size);
2047 }
2048
2049
2050 // Debugging output for failure
2051 void CompileBroker::print_last_compile() {
2052 if ( _last_compile_level != CompLevel_none &&
2053 compiler(_last_compile_level) != NULL &&
2054 _last_method_compiled != NULL &&
2055 _last_compile_type != no_compile) {
2056 if (_last_compile_type == osr_compile) {
2057 tty->print_cr("Last parse: [osr]%d+++(%d) %s",
2058 _osr_compilation_id, _last_compile_level, _last_method_compiled);
2059 } else {
2060 tty->print_cr("Last parse: %d+++(%d) %s",
2061 _compilation_id, _last_compile_level, _last_method_compiled);
2062 }
2063 }
2064 }
2065
2066
2067 void CompileBroker::print_compiler_threads_on(outputStream* st) {
2068 #ifndef PRODUCT
2069 st->print_cr("Compiler thread printing unimplemented.");
2070 st->cr();
2071 #endif
2072 }