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