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