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