OpenJDK / jdk8 / jdk8 / hotspot

annotate src/share/vm/compiler/compileBroker.cpp @ 4517:a7fb14888912

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8006952: Slow VM due to excessive code cache freelist iteration Summary: Remove continous free block requirement Reviewed-by: kvn
author neliasso
date Thu, 11 Apr 2013 13:57:44 +0200
parents b84fd7d73702
children 7b23cb975cf2
rev   line source
duke@0 1 /*
never@3064 2 * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved.
duke@0 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@0 4 *
duke@0 5 * This code is free software; you can redistribute it and/or modify it
duke@0 6 * under the terms of the GNU General Public License version 2 only, as
duke@0 7 * published by the Free Software Foundation.
duke@0 8 *
duke@0 9 * This code is distributed in the hope that it will be useful, but WITHOUT
duke@0 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@0 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@0 12 * version 2 for more details (a copy is included in the LICENSE file that
duke@0 13 * accompanied this code).
duke@0 14 *
duke@0 15 * You should have received a copy of the GNU General Public License version
duke@0 16 * 2 along with this work; if not, write to the Free Software Foundation,
duke@0 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@0 18 *
trims@1472 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1472 20 * or visit www.oracle.com if you need additional information or have any
trims@1472 21 * questions.
duke@0 22 *
duke@0 23 */
duke@0 24
stefank@1879 25 #include "precompiled.hpp"
stefank@1879 26 #include "classfile/systemDictionary.hpp"
stefank@1879 27 #include "classfile/vmSymbols.hpp"
stefank@1879 28 #include "code/codeCache.hpp"
stefank@1879 29 #include "compiler/compileBroker.hpp"
stefank@1879 30 #include "compiler/compileLog.hpp"
stefank@1879 31 #include "compiler/compilerOracle.hpp"
stefank@1879 32 #include "interpreter/linkResolver.hpp"
stefank@1879 33 #include "memory/allocation.inline.hpp"
coleenp@3602 34 #include "oops/methodData.hpp"
coleenp@3602 35 #include "oops/method.hpp"
stefank@1879 36 #include "oops/oop.inline.hpp"
stefank@1879 37 #include "prims/nativeLookup.hpp"
stefank@1879 38 #include "runtime/arguments.hpp"
stefank@1879 39 #include "runtime/compilationPolicy.hpp"
stefank@1879 40 #include "runtime/init.hpp"
stefank@1879 41 #include "runtime/interfaceSupport.hpp"
stefank@1879 42 #include "runtime/javaCalls.hpp"
stefank@1879 43 #include "runtime/os.hpp"
stefank@1879 44 #include "runtime/sharedRuntime.hpp"
stefank@1879 45 #include "runtime/sweeper.hpp"
stefank@1879 46 #include "utilities/dtrace.hpp"
never@3064 47 #include "utilities/events.hpp"
stefank@1879 48 #ifdef COMPILER1
stefank@1879 49 #include "c1/c1_Compiler.hpp"
stefank@1879 50 #endif
stefank@1879 51 #ifdef COMPILER2
stefank@1879 52 #include "opto/c2compiler.hpp"
stefank@1879 53 #endif
stefank@1879 54 #ifdef SHARK
stefank@1879 55 #include "shark/sharkCompiler.hpp"
stefank@1879 56 #endif
duke@0 57
duke@0 58 #ifdef DTRACE_ENABLED
duke@0 59
duke@0 60 // Only bother with this argument setup if dtrace is available
duke@0 61
dcubed@2767 62 #ifndef USDT2
duke@0 63 HS_DTRACE_PROBE_DECL8(hotspot, method__compile__begin,
duke@0 64 char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t);
duke@0 65 HS_DTRACE_PROBE_DECL9(hotspot, method__compile__end,
duke@0 66 char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t, bool);
duke@0 67
morris@4336 68 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method, comp_name) \
duke@0 69 { \
coleenp@2062 70 Symbol* klass_name = (method)->klass_name(); \
coleenp@2062 71 Symbol* name = (method)->name(); \
coleenp@2062 72 Symbol* signature = (method)->signature(); \
duke@0 73 HS_DTRACE_PROBE8(hotspot, method__compile__begin, \
duke@0 74 comp_name, strlen(comp_name), \
duke@0 75 klass_name->bytes(), klass_name->utf8_length(), \
duke@0 76 name->bytes(), name->utf8_length(), \
duke@0 77 signature->bytes(), signature->utf8_length()); \
duke@0 78 }
duke@0 79
morris@4336 80 #define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, \
morris@4336 81 comp_name, success) \
duke@0 82 { \
coleenp@2062 83 Symbol* klass_name = (method)->klass_name(); \
coleenp@2062 84 Symbol* name = (method)->name(); \
coleenp@2062 85 Symbol* signature = (method)->signature(); \
duke@0 86 HS_DTRACE_PROBE9(hotspot, method__compile__end, \
duke@0 87 comp_name, strlen(comp_name), \
duke@0 88 klass_name->bytes(), klass_name->utf8_length(), \
duke@0 89 name->bytes(), name->utf8_length(), \
duke@0 90 signature->bytes(), signature->utf8_length(), (success)); \
duke@0 91 }
duke@0 92
dcubed@2767 93 #else /* USDT2 */
dcubed@2767 94
morris@4336 95 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method, comp_name) \
dcubed@2767 96 { \
dcubed@2767 97 Symbol* klass_name = (method)->klass_name(); \
dcubed@2767 98 Symbol* name = (method)->name(); \
dcubed@2767 99 Symbol* signature = (method)->signature(); \
morris@4336 100 HOTSPOT_METHOD_COMPILE_BEGIN( \
dcubed@2767 101 comp_name, strlen(comp_name), \
morris@4336 102 (char *) klass_name->bytes(), klass_name->utf8_length(), \
dcubed@2767 103 (char *) name->bytes(), name->utf8_length(), \
dcubed@2767 104 (char *) signature->bytes(), signature->utf8_length()); \
dcubed@2767 105 }
dcubed@2767 106
morris@4336 107 #define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, \
morris@4336 108 comp_name, success) \
dcubed@2767 109 { \
dcubed@2767 110 Symbol* klass_name = (method)->klass_name(); \
dcubed@2767 111 Symbol* name = (method)->name(); \
dcubed@2767 112 Symbol* signature = (method)->signature(); \
dcubed@2767 113 HOTSPOT_METHOD_COMPILE_END( \
dcubed@2767 114 comp_name, strlen(comp_name), \
dcubed@2767 115 (char *) klass_name->bytes(), klass_name->utf8_length(), \
dcubed@2767 116 (char *) name->bytes(), name->utf8_length(), \
dcubed@2767 117 (char *) signature->bytes(), signature->utf8_length(), (success)); \
dcubed@2767 118 }
dcubed@2767 119 #endif /* USDT2 */
dcubed@2767 120
duke@0 121 #else // ndef DTRACE_ENABLED
duke@0 122
morris@4336 123 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method, comp_name)
morris@4336 124 #define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, comp_name, success)
duke@0 125
duke@0 126 #endif // ndef DTRACE_ENABLED
duke@0 127
duke@0 128 bool CompileBroker::_initialized = false;
duke@0 129 volatile bool CompileBroker::_should_block = false;
kvn@1202 130 volatile jint CompileBroker::_should_compile_new_jobs = run_compilation;
duke@0 131
duke@0 132 // The installed compiler(s)
duke@0 133 AbstractCompiler* CompileBroker::_compilers[2];
duke@0 134
duke@0 135 // These counters are used for assigning id's to each compilation
duke@0 136 uint CompileBroker::_compilation_id = 0;
duke@0 137 uint CompileBroker::_osr_compilation_id = 0;
duke@0 138
duke@0 139 // Debugging information
duke@0 140 int CompileBroker::_last_compile_type = no_compile;
duke@0 141 int CompileBroker::_last_compile_level = CompLevel_none;
duke@0 142 char CompileBroker::_last_method_compiled[CompileBroker::name_buffer_length];
duke@0 143
duke@0 144 // Performance counters
duke@0 145 PerfCounter* CompileBroker::_perf_total_compilation = NULL;
duke@0 146 PerfCounter* CompileBroker::_perf_osr_compilation = NULL;
duke@0 147 PerfCounter* CompileBroker::_perf_standard_compilation = NULL;
duke@0 148
duke@0 149 PerfCounter* CompileBroker::_perf_total_bailout_count = NULL;
duke@0 150 PerfCounter* CompileBroker::_perf_total_invalidated_count = NULL;
duke@0 151 PerfCounter* CompileBroker::_perf_total_compile_count = NULL;
duke@0 152 PerfCounter* CompileBroker::_perf_total_osr_compile_count = NULL;
duke@0 153 PerfCounter* CompileBroker::_perf_total_standard_compile_count = NULL;
duke@0 154
duke@0 155 PerfCounter* CompileBroker::_perf_sum_osr_bytes_compiled = NULL;
duke@0 156 PerfCounter* CompileBroker::_perf_sum_standard_bytes_compiled = NULL;
duke@0 157 PerfCounter* CompileBroker::_perf_sum_nmethod_size = NULL;
duke@0 158 PerfCounter* CompileBroker::_perf_sum_nmethod_code_size = NULL;
duke@0 159
duke@0 160 PerfStringVariable* CompileBroker::_perf_last_method = NULL;
duke@0 161 PerfStringVariable* CompileBroker::_perf_last_failed_method = NULL;
duke@0 162 PerfStringVariable* CompileBroker::_perf_last_invalidated_method = NULL;
duke@0 163 PerfVariable* CompileBroker::_perf_last_compile_type = NULL;
duke@0 164 PerfVariable* CompileBroker::_perf_last_compile_size = NULL;
duke@0 165 PerfVariable* CompileBroker::_perf_last_failed_type = NULL;
duke@0 166 PerfVariable* CompileBroker::_perf_last_invalidated_type = NULL;
duke@0 167
duke@0 168 // Timers and counters for generating statistics
duke@0 169 elapsedTimer CompileBroker::_t_total_compilation;
duke@0 170 elapsedTimer CompileBroker::_t_osr_compilation;
duke@0 171 elapsedTimer CompileBroker::_t_standard_compilation;
duke@0 172
duke@0 173 int CompileBroker::_total_bailout_count = 0;
duke@0 174 int CompileBroker::_total_invalidated_count = 0;
duke@0 175 int CompileBroker::_total_compile_count = 0;
duke@0 176 int CompileBroker::_total_osr_compile_count = 0;
duke@0 177 int CompileBroker::_total_standard_compile_count = 0;
duke@0 178
duke@0 179 int CompileBroker::_sum_osr_bytes_compiled = 0;
duke@0 180 int CompileBroker::_sum_standard_bytes_compiled = 0;
duke@0 181 int CompileBroker::_sum_nmethod_size = 0;
duke@0 182 int CompileBroker::_sum_nmethod_code_size = 0;
duke@0 183
iveresov@1703 184 CompileQueue* CompileBroker::_c2_method_queue = NULL;
iveresov@1703 185 CompileQueue* CompileBroker::_c1_method_queue = NULL;
duke@0 186 CompileTask* CompileBroker::_task_free_list = NULL;
duke@0 187
duke@0 188 GrowableArray<CompilerThread*>* CompileBroker::_method_threads = NULL;
duke@0 189
duke@0 190
never@3064 191 class CompilationLog : public StringEventLog {
never@3064 192 public:
never@3064 193 CompilationLog() : StringEventLog("Compilation events") {
never@3064 194 }
never@3064 195
never@3064 196 void log_compile(JavaThread* thread, CompileTask* task) {
never@3064 197 StringLogMessage lm;
twisti@3676 198 stringStream sstr = lm.stream();
never@3064 199 // msg.time_stamp().update_to(tty->time_stamp().ticks());
twisti@3676 200 task->print_compilation(&sstr, NULL, true);
never@3064 201 log(thread, "%s", (const char*)lm);
never@3064 202 }
never@3064 203
never@3064 204 void log_nmethod(JavaThread* thread, nmethod* nm) {
never@3136 205 log(thread, "nmethod %d%s " INTPTR_FORMAT " code ["INTPTR_FORMAT ", " INTPTR_FORMAT "]",
never@3136 206 nm->compile_id(), nm->is_osr_method() ? "%" : "",
never@3064 207 nm, nm->code_begin(), nm->code_end());
never@3064 208 }
never@3064 209
never@3064 210 void log_failure(JavaThread* thread, CompileTask* task, const char* reason, const char* retry_message) {
never@3064 211 StringLogMessage lm;
never@3064 212 lm.print("%4d COMPILE SKIPPED: %s", task->compile_id(), reason);
never@3064 213 if (retry_message != NULL) {
never@3064 214 lm.append(" (%s)", retry_message);
never@3064 215 }
never@3064 216 lm.print("\n");
never@3064 217 log(thread, "%s", (const char*)lm);
never@3064 218 }
never@3064 219 };
never@3064 220
never@3064 221 static CompilationLog* _compilation_log = NULL;
never@3064 222
never@3064 223 void compileBroker_init() {
never@3064 224 if (LogEvents) {
never@3064 225 _compilation_log = new CompilationLog();
never@3064 226 }
never@3064 227 }
never@3064 228
duke@0 229 CompileTaskWrapper::CompileTaskWrapper(CompileTask* task) {
duke@0 230 CompilerThread* thread = CompilerThread::current();
duke@0 231 thread->set_task(task);
duke@0 232 CompileLog* log = thread->log();
duke@0 233 if (log != NULL) task->log_task_start(log);
duke@0 234 }
duke@0 235
duke@0 236 CompileTaskWrapper::~CompileTaskWrapper() {
duke@0 237 CompilerThread* thread = CompilerThread::current();
duke@0 238 CompileTask* task = thread->task();
duke@0 239 CompileLog* log = thread->log();
duke@0 240 if (log != NULL) task->log_task_done(log);
duke@0 241 thread->set_task(NULL);
duke@0 242 task->set_code_handle(NULL);
coleenp@3602 243 thread->set_env(NULL);
duke@0 244 if (task->is_blocking()) {
duke@0 245 MutexLocker notifier(task->lock(), thread);
duke@0 246 task->mark_complete();
duke@0 247 // Notify the waiting thread that the compilation has completed.
duke@0 248 task->lock()->notify_all();
duke@0 249 } else {
duke@0 250 task->mark_complete();
duke@0 251
duke@0 252 // By convention, the compiling thread is responsible for
duke@0 253 // recycling a non-blocking CompileTask.
duke@0 254 CompileBroker::free_task(task);
duke@0 255 }
duke@0 256 }
duke@0 257
duke@0 258
duke@0 259 // ------------------------------------------------------------------
duke@0 260 // CompileTask::initialize
duke@0 261 void CompileTask::initialize(int compile_id,
duke@0 262 methodHandle method,
duke@0 263 int osr_bci,
duke@0 264 int comp_level,
duke@0 265 methodHandle hot_method,
duke@0 266 int hot_count,
duke@0 267 const char* comment,
duke@0 268 bool is_blocking) {
duke@0 269 assert(!_lock->is_locked(), "bad locking");
duke@0 270
duke@0 271 _compile_id = compile_id;
coleenp@3602 272 _method = method();
coleenp@3910 273 _method_holder = JNIHandles::make_global(method->method_holder()->klass_holder());
duke@0 274 _osr_bci = osr_bci;
duke@0 275 _is_blocking = is_blocking;
duke@0 276 _comp_level = comp_level;
duke@0 277 _num_inlined_bytecodes = 0;
duke@0 278
duke@0 279 _is_complete = false;
duke@0 280 _is_success = false;
duke@0 281 _code_handle = NULL;
duke@0 282
duke@0 283 _hot_method = NULL;
coleenp@3869 284 _hot_method_holder = NULL;
duke@0 285 _hot_count = hot_count;
duke@0 286 _time_queued = 0; // tidy
duke@0 287 _comment = comment;
duke@0 288
duke@0 289 if (LogCompilation) {
duke@0 290 _time_queued = os::elapsed_counter();
duke@0 291 if (hot_method.not_null()) {
duke@0 292 if (hot_method == method) {
duke@0 293 _hot_method = _method;
duke@0 294 } else {
coleenp@3602 295 _hot_method = hot_method();
coleenp@3869 296 // only add loader or mirror if different from _method_holder
coleenp@3910 297 _hot_method_holder = JNIHandles::make_global(hot_method->method_holder()->klass_holder());
duke@0 298 }
duke@0 299 }
duke@0 300 }
duke@0 301
duke@0 302 _next = NULL;
duke@0 303 }
duke@0 304
duke@0 305 // ------------------------------------------------------------------
duke@0 306 // CompileTask::code/set_code
duke@0 307 nmethod* CompileTask::code() const {
duke@0 308 if (_code_handle == NULL) return NULL;
duke@0 309 return _code_handle->code();
duke@0 310 }
duke@0 311 void CompileTask::set_code(nmethod* nm) {
duke@0 312 if (_code_handle == NULL && nm == NULL) return;
duke@0 313 guarantee(_code_handle != NULL, "");
duke@0 314 _code_handle->set_code(nm);
duke@0 315 if (nm == NULL) _code_handle = NULL; // drop the handle also
duke@0 316 }
duke@0 317
duke@0 318 // ------------------------------------------------------------------
duke@0 319 // CompileTask::free
duke@0 320 void CompileTask::free() {
duke@0 321 set_code(NULL);
duke@0 322 assert(!_lock->is_locked(), "Should not be locked when freed");
coleenp@3869 323 JNIHandles::destroy_global(_method_holder);
coleenp@3869 324 JNIHandles::destroy_global(_hot_method_holder);
duke@0 325 }
duke@0 326
duke@0 327
coleenp@3602 328 void CompileTask::mark_on_stack() {
coleenp@3602 329 // Mark these methods as something redefine classes cannot remove.
coleenp@3602 330 _method->set_on_stack(true);
coleenp@3602 331 if (_hot_method != NULL) {
coleenp@3602 332 _hot_method->set_on_stack(true);
coleenp@3602 333 }
coleenp@3602 334 }
coleenp@3602 335
duke@0 336 // ------------------------------------------------------------------
duke@0 337 // CompileTask::print
duke@0 338 void CompileTask::print() {
duke@0 339 tty->print("<CompileTask compile_id=%d ", _compile_id);
duke@0 340 tty->print("method=");
coleenp@3602 341 _method->print_name(tty);
duke@0 342 tty->print_cr(" osr_bci=%d is_blocking=%s is_complete=%s is_success=%s>",
duke@0 343 _osr_bci, bool_to_str(_is_blocking),
duke@0 344 bool_to_str(_is_complete), bool_to_str(_is_success));
duke@0 345 }
duke@0 346
iveresov@1703 347
duke@0 348 // ------------------------------------------------------------------
duke@0 349 // CompileTask::print_line_on_error
duke@0 350 //
duke@0 351 // This function is called by fatal error handler when the thread
duke@0 352 // causing troubles is a compiler thread.
duke@0 353 //
duke@0 354 // Do not grab any lock, do not allocate memory.
duke@0 355 //
duke@0 356 // Otherwise it's the same as CompileTask::print_line()
duke@0 357 //
duke@0 358 void CompileTask::print_line_on_error(outputStream* st, char* buf, int buflen) {
duke@0 359 // print compiler name
morris@4336 360 st->print("%s:", CompileBroker::compiler_name(comp_level()));
twisti@2252 361 print_compilation(st);
duke@0 362 }
duke@0 363
duke@0 364 // ------------------------------------------------------------------
duke@0 365 // CompileTask::print_line
duke@0 366 void CompileTask::print_line() {
duke@0 367 ttyLocker ttyl; // keep the following output all in one block
duke@0 368 // print compiler name if requested
morris@4336 369 if (CIPrintCompilerName) tty->print("%s:", CompileBroker::compiler_name(comp_level()));
twisti@2252 370 print_compilation();
duke@0 371 }
duke@0 372
duke@0 373
duke@0 374 // ------------------------------------------------------------------
twisti@2252 375 // CompileTask::print_compilation_impl
coleenp@3602 376 void CompileTask::print_compilation_impl(outputStream* st, Method* method, int compile_id, int comp_level,
never@3064 377 bool is_osr_method, int osr_bci, bool is_blocking,
never@3064 378 const char* msg, bool short_form) {
never@3064 379 if (!short_form) {
never@3064 380 st->print("%7d ", (int) st->time_stamp().milliseconds()); // print timestamp
never@3064 381 }
twisti@2252 382 st->print("%4d ", compile_id); // print compilation number
twisti@2252 383
never@2514 384 // For unloaded methods the transition to zombie occurs after the
never@2514 385 // method is cleared so it's impossible to report accurate
never@2514 386 // information for that case.
never@2514 387 bool is_synchronized = false;
never@2514 388 bool has_exception_handler = false;
never@2514 389 bool is_native = false;
never@2514 390 if (method != NULL) {
never@2514 391 is_synchronized = method->is_synchronized();
never@2514 392 has_exception_handler = method->has_exception_handler();
never@2514 393 is_native = method->is_native();
never@2514 394 }
twisti@2252 395 // method attributes
twisti@2252 396 const char compile_type = is_osr_method ? '%' : ' ';
never@2514 397 const char sync_char = is_synchronized ? 's' : ' ';
never@2514 398 const char exception_char = has_exception_handler ? '!' : ' ';
twisti@2252 399 const char blocking_char = is_blocking ? 'b' : ' ';
never@2514 400 const char native_char = is_native ? 'n' : ' ';
twisti@2252 401
twisti@2252 402 // print method attributes
twisti@2252 403 st->print("%c%c%c%c%c ", compile_type, sync_char, exception_char, blocking_char, native_char);
twisti@2252 404
twisti@2252 405 if (TieredCompilation) {
twisti@2252 406 if (comp_level != -1) st->print("%d ", comp_level);
twisti@2252 407 else st->print("- ");
twisti@2252 408 }
twisti@2252 409 st->print(" "); // more indent
twisti@2252 410
never@2514 411 if (method == NULL) {
never@2514 412 st->print("(method)");
never@2514 413 } else {
never@2514 414 method->print_short_name(st);
never@2514 415 if (is_osr_method) {
never@2514 416 st->print(" @ %d", osr_bci);
never@2514 417 }
twisti@3534 418 if (method->is_native())
twisti@3534 419 st->print(" (native)");
twisti@3534 420 else
twisti@3534 421 st->print(" (%d bytes)", method->code_size());
twisti@2252 422 }
twisti@2252 423
twisti@2252 424 if (msg != NULL) {
twisti@2252 425 st->print(" %s", msg);
twisti@2252 426 }
never@3064 427 if (!short_form) {
never@3064 428 st->cr();
never@3064 429 }
twisti@2252 430 }
twisti@2252 431
twisti@2252 432 // ------------------------------------------------------------------
twisti@2252 433 // CompileTask::print_inlining
twisti@2252 434 void CompileTask::print_inlining(outputStream* st, ciMethod* method, int inline_level, int bci, const char* msg) {
twisti@2252 435 // 1234567
twisti@2252 436 st->print(" "); // print timestamp
twisti@2252 437 // 1234
twisti@2252 438 st->print(" "); // print compilation number
twisti@2252 439
twisti@2252 440 // method attributes
twisti@3534 441 if (method->is_loaded()) {
twisti@3534 442 const char sync_char = method->is_synchronized() ? 's' : ' ';
twisti@3534 443 const char exception_char = method->has_exception_handlers() ? '!' : ' ';
twisti@3534 444 const char monitors_char = method->has_monitor_bytecodes() ? 'm' : ' ';
twisti@2252 445
twisti@3534 446 // print method attributes
twisti@3534 447 st->print(" %c%c%c ", sync_char, exception_char, monitors_char);
twisti@3534 448 } else {
twisti@3534 449 // %s!bn
twisti@3534 450 st->print(" "); // print method attributes
twisti@3534 451 }
twisti@2252 452
twisti@2252 453 if (TieredCompilation) {
twisti@2252 454 st->print(" ");
twisti@2252 455 }
twisti@2252 456 st->print(" "); // more indent
twisti@2252 457 st->print(" "); // initial inlining indent
twisti@2252 458
twisti@2252 459 for (int i = 0; i < inline_level; i++) st->print(" ");
twisti@2252 460
twisti@2252 461 st->print("@ %d ", bci); // print bci
twisti@2252 462 method->print_short_name(st);
twisti@3534 463 if (method->is_loaded())
twisti@3534 464 st->print(" (%d bytes)", method->code_size());
twisti@3534 465 else
twisti@3534 466 st->print(" (not loaded)");
twisti@2252 467
twisti@2252 468 if (msg != NULL) {
twisti@2252 469 st->print(" %s", msg);
twisti@2252 470 }
twisti@2252 471 st->cr();
twisti@2252 472 }
twisti@2252 473
twisti@2252 474 // ------------------------------------------------------------------
twisti@2252 475 // CompileTask::print_inline_indent
twisti@2252 476 void CompileTask::print_inline_indent(int inline_level, outputStream* st) {
twisti@2252 477 // 1234567
twisti@2252 478 st->print(" "); // print timestamp
twisti@2252 479 // 1234
twisti@2252 480 st->print(" "); // print compilation number
twisti@2252 481 // %s!bn
twisti@2252 482 st->print(" "); // print method attributes
twisti@2252 483 if (TieredCompilation) {
twisti@2252 484 st->print(" ");
twisti@2252 485 }
twisti@2252 486 st->print(" "); // more indent
twisti@2252 487 st->print(" "); // initial inlining indent
twisti@2252 488 for (int i = 0; i < inline_level; i++) st->print(" ");
twisti@2252 489 }
twisti@2252 490
twisti@2252 491 // ------------------------------------------------------------------
twisti@2252 492 // CompileTask::print_compilation
twisti@3676 493 void CompileTask::print_compilation(outputStream* st, const char* msg, bool short_form) {
twisti@2252 494 bool is_osr_method = osr_bci() != InvocationEntryBci;
twisti@3676 495 print_compilation_impl(st, method(), compile_id(), comp_level(), is_osr_method, osr_bci(), is_blocking(), msg, short_form);
twisti@2252 496 }
twisti@2252 497
twisti@2252 498 // ------------------------------------------------------------------
duke@0 499 // CompileTask::log_task
duke@0 500 void CompileTask::log_task(xmlStream* log) {
duke@0 501 Thread* thread = Thread::current();
coleenp@3602 502 methodHandle method(thread, this->method());
duke@0 503 ResourceMark rm(thread);
duke@0 504
duke@0 505 // <task id='9' method='M' osr_bci='X' level='1' blocking='1' stamp='1.234'>
neliasso@4295 506 log->print(" compile_id='%d'", _compile_id);
duke@0 507 if (_osr_bci != CompileBroker::standard_entry_bci) {
duke@0 508 log->print(" compile_kind='osr'"); // same as nmethod::compile_kind
duke@0 509 } // else compile_kind='c2c'
duke@0 510 if (!method.is_null()) log->method(method);
duke@0 511 if (_osr_bci != CompileBroker::standard_entry_bci) {
duke@0 512 log->print(" osr_bci='%d'", _osr_bci);
duke@0 513 }
duke@0 514 if (_comp_level != CompLevel_highest_tier) {
duke@0 515 log->print(" level='%d'", _comp_level);
duke@0 516 }
duke@0 517 if (_is_blocking) {
duke@0 518 log->print(" blocking='1'");
duke@0 519 }
duke@0 520 log->stamp();
duke@0 521 }
duke@0 522
duke@0 523
duke@0 524 // ------------------------------------------------------------------
duke@0 525 // CompileTask::log_task_queued
duke@0 526 void CompileTask::log_task_queued() {
duke@0 527 Thread* thread = Thread::current();
duke@0 528 ttyLocker ttyl;
duke@0 529 ResourceMark rm(thread);
duke@0 530
duke@0 531 xtty->begin_elem("task_queued");
duke@0 532 log_task(xtty);
duke@0 533 if (_comment != NULL) {
duke@0 534 xtty->print(" comment='%s'", _comment);
duke@0 535 }
duke@0 536 if (_hot_method != NULL) {
coleenp@3602 537 methodHandle hot(thread, _hot_method);
coleenp@3602 538 methodHandle method(thread, _method);
duke@0 539 if (hot() != method()) {
duke@0 540 xtty->method(hot);
duke@0 541 }
duke@0 542 }
duke@0 543 if (_hot_count != 0) {
duke@0 544 xtty->print(" hot_count='%d'", _hot_count);
duke@0 545 }
duke@0 546 xtty->end_elem();
duke@0 547 }
duke@0 548
duke@0 549
duke@0 550 // ------------------------------------------------------------------
duke@0 551 // CompileTask::log_task_start
duke@0 552 void CompileTask::log_task_start(CompileLog* log) {
duke@0 553 log->begin_head("task");
duke@0 554 log_task(log);
duke@0 555 log->end_head();
duke@0 556 }
duke@0 557
duke@0 558
duke@0 559 // ------------------------------------------------------------------
duke@0 560 // CompileTask::log_task_done
duke@0 561 void CompileTask::log_task_done(CompileLog* log) {
duke@0 562 Thread* thread = Thread::current();
coleenp@3602 563 methodHandle method(thread, this->method());
duke@0 564 ResourceMark rm(thread);
duke@0 565
duke@0 566 // <task_done ... stamp='1.234'> </task>
duke@0 567 nmethod* nm = code();
duke@0 568 log->begin_elem("task_done success='%d' nmsize='%d' count='%d'",
twisti@1668 569 _is_success, nm == NULL ? 0 : nm->content_size(),
duke@0 570 method->invocation_count());
duke@0 571 int bec = method->backedge_count();
duke@0 572 if (bec != 0) log->print(" backedge_count='%d'", bec);
duke@0 573 // Note: "_is_complete" is about to be set, but is not.
duke@0 574 if (_num_inlined_bytecodes != 0) {
duke@0 575 log->print(" inlined_bytes='%d'", _num_inlined_bytecodes);
duke@0 576 }
duke@0 577 log->stamp();
duke@0 578 log->end_elem();
duke@0 579 log->tail("task");
duke@0 580 log->clear_identities(); // next task will have different CI
duke@0 581 if (log->unflushed_count() > 2000) {
duke@0 582 log->flush();
duke@0 583 }
duke@0 584 log->mark_file_end();
duke@0 585 }
duke@0 586
duke@0 587
duke@0 588
duke@0 589 // ------------------------------------------------------------------
duke@0 590 // CompileQueue::add
duke@0 591 //
duke@0 592 // Add a CompileTask to a CompileQueue
duke@0 593 void CompileQueue::add(CompileTask* task) {
duke@0 594 assert(lock()->owned_by_self(), "must own lock");
duke@0 595
duke@0 596 task->set_next(NULL);
iveresov@1703 597 task->set_prev(NULL);
duke@0 598
duke@0 599 if (_last == NULL) {
duke@0 600 // The compile queue is empty.
duke@0 601 assert(_first == NULL, "queue is empty");
duke@0 602 _first = task;
duke@0 603 _last = task;
duke@0 604 } else {
duke@0 605 // Append the task to the queue.
duke@0 606 assert(_last->next() == NULL, "not last");
duke@0 607 _last->set_next(task);
iveresov@1703 608 task->set_prev(_last);
duke@0 609 _last = task;
duke@0 610 }
iveresov@1703 611 ++_size;
duke@0 612
duke@0 613 // Mark the method as being in the compile queue.
coleenp@3602 614 task->method()->set_queued_for_compilation();
duke@0 615
duke@0 616 if (CIPrintCompileQueue) {
duke@0 617 print();
duke@0 618 }
duke@0 619
duke@0 620 if (LogCompilation && xtty != NULL) {
duke@0 621 task->log_task_queued();
duke@0 622 }
duke@0 623
duke@0 624 // Notify CompilerThreads that a task is available.
iveresov@1703 625 lock()->notify_all();
duke@0 626 }
duke@0 627
duke@0 628 // ------------------------------------------------------------------
duke@0 629 // CompileQueue::get
duke@0 630 //
duke@0 631 // Get the next CompileTask from a CompileQueue
duke@0 632 CompileTask* CompileQueue::get() {
never@1458 633 NMethodSweeper::possibly_sweep();
never@1458 634
duke@0 635 MutexLocker locker(lock());
duke@0 636 // Wait for an available CompileTask.
duke@0 637 while (_first == NULL) {
duke@0 638 // There is no work to be done right now. Wait.
never@1458 639 if (UseCodeCacheFlushing && (!CompileBroker::should_compile_new_jobs() || CodeCache::needs_flushing())) {
never@1458 640 // During the emergency sweeping periods, wake up and sweep occasionally
never@1458 641 bool timedout = lock()->wait(!Mutex::_no_safepoint_check_flag, NmethodSweepCheckInterval*1000);
never@1458 642 if (timedout) {
never@1458 643 MutexUnlocker ul(lock());
never@1458 644 // When otherwise not busy, run nmethod sweeping
never@1458 645 NMethodSweeper::possibly_sweep();
never@1458 646 }
never@1458 647 } else {
never@1458 648 // During normal operation no need to wake up on timer
never@1458 649 lock()->wait();
never@1458 650 }
duke@0 651 }
iveresov@1703 652 CompileTask* task = CompilationPolicy::policy()->select_task(this);
iveresov@1703 653 remove(task);
iveresov@1703 654 return task;
iveresov@1703 655 }
duke@0 656
iveresov@1703 657 void CompileQueue::remove(CompileTask* task)
iveresov@1703 658 {
iveresov@1703 659 assert(lock()->owned_by_self(), "must own lock");
iveresov@1703 660 if (task->prev() != NULL) {
iveresov@1703 661 task->prev()->set_next(task->next());
iveresov@1703 662 } else {
iveresov@1703 663 // max is the first element
iveresov@1703 664 assert(task == _first, "Sanity");
iveresov@1703 665 _first = task->next();
duke@0 666 }
duke@0 667
iveresov@1703 668 if (task->next() != NULL) {
iveresov@1703 669 task->next()->set_prev(task->prev());
iveresov@1703 670 } else {
iveresov@1703 671 // max is the last element
iveresov@1703 672 assert(task == _last, "Sanity");
iveresov@1703 673 _last = task->prev();
iveresov@1703 674 }
iveresov@1703 675 --_size;
duke@0 676 }
duke@0 677
coleenp@3602 678 // methods in the compile queue need to be marked as used on the stack
coleenp@3602 679 // so that they don't get reclaimed by Redefine Classes
coleenp@3602 680 void CompileQueue::mark_on_stack() {
coleenp@3602 681 CompileTask* task = _first;
coleenp@3602 682 while (task != NULL) {
coleenp@3602 683 task->mark_on_stack();
coleenp@3602 684 task = task->next();
coleenp@3602 685 }
coleenp@3602 686 }
coleenp@3602 687
duke@0 688 // ------------------------------------------------------------------
duke@0 689 // CompileQueue::print
duke@0 690 void CompileQueue::print() {
duke@0 691 tty->print_cr("Contents of %s", name());
duke@0 692 tty->print_cr("----------------------");
duke@0 693 CompileTask* task = _first;
duke@0 694 while (task != NULL) {
duke@0 695 task->print_line();
duke@0 696 task = task->next();
duke@0 697 }
duke@0 698 tty->print_cr("----------------------");
duke@0 699 }
duke@0 700
duke@0 701 CompilerCounters::CompilerCounters(const char* thread_name, int instance, TRAPS) {
duke@0 702
duke@0 703 _current_method[0] = '\0';
duke@0 704 _compile_type = CompileBroker::no_compile;
duke@0 705
duke@0 706 if (UsePerfData) {
duke@0 707 ResourceMark rm;
duke@0 708
duke@0 709 // create the thread instance name space string - don't create an
duke@0 710 // instance subspace if instance is -1 - keeps the adapterThread
duke@0 711 // counters from having a ".0" namespace.
duke@0 712 const char* thread_i = (instance == -1) ? thread_name :
duke@0 713 PerfDataManager::name_space(thread_name, instance);
duke@0 714
duke@0 715
duke@0 716 char* name = PerfDataManager::counter_name(thread_i, "method");
duke@0 717 _perf_current_method =
duke@0 718 PerfDataManager::create_string_variable(SUN_CI, name,
duke@0 719 cmname_buffer_length,
duke@0 720 _current_method, CHECK);
duke@0 721
duke@0 722 name = PerfDataManager::counter_name(thread_i, "type");
duke@0 723 _perf_compile_type = PerfDataManager::create_variable(SUN_CI, name,
duke@0 724 PerfData::U_None,
duke@0 725 (jlong)_compile_type,
duke@0 726 CHECK);
duke@0 727
duke@0 728 name = PerfDataManager::counter_name(thread_i, "time");
duke@0 729 _perf_time = PerfDataManager::create_counter(SUN_CI, name,
duke@0 730 PerfData::U_Ticks, CHECK);
duke@0 731
duke@0 732 name = PerfDataManager::counter_name(thread_i, "compiles");
duke@0 733 _perf_compiles = PerfDataManager::create_counter(SUN_CI, name,
duke@0 734 PerfData::U_Events, CHECK);
duke@0 735 }
duke@0 736 }
duke@0 737
duke@0 738 // ------------------------------------------------------------------
duke@0 739 // CompileBroker::compilation_init
duke@0 740 //
duke@0 741 // Initialize the Compilation object
duke@0 742 void CompileBroker::compilation_init() {
duke@0 743 _last_method_compiled[0] = '\0';
duke@0 744
twisti@1877 745 #ifndef SHARK
duke@0 746 // Set the interface to the current compiler(s).
iveresov@1703 747 int c1_count = CompilationPolicy::policy()->compiler_count(CompLevel_simple);
iveresov@1703 748 int c2_count = CompilationPolicy::policy()->compiler_count(CompLevel_full_optimization);
duke@0 749 #ifdef COMPILER1
iveresov@1703 750 if (c1_count > 0) {
iveresov@1703 751 _compilers[0] = new Compiler();
iveresov@1703 752 }
duke@0 753 #endif // COMPILER1
duke@0 754
duke@0 755 #ifdef COMPILER2
iveresov@1703 756 if (c2_count > 0) {
iveresov@1703 757 _compilers[1] = new C2Compiler();
iveresov@1703 758 }
duke@0 759 #endif // COMPILER2
duke@0 760
twisti@1877 761 #else // SHARK
twisti@1877 762 int c1_count = 0;
twisti@1877 763 int c2_count = 1;
twisti@1877 764
twisti@1877 765 _compilers[1] = new SharkCompiler();
twisti@1877 766 #endif // SHARK
twisti@1612 767
duke@0 768 // Initialize the CompileTask free list
duke@0 769 _task_free_list = NULL;
duke@0 770
duke@0 771 // Start the CompilerThreads
iveresov@1703 772 init_compiler_threads(c1_count, c2_count);
duke@0 773 // totalTime performance counter is always created as it is required
duke@0 774 // by the implementation of java.lang.management.CompilationMBean.
duke@0 775 {
duke@0 776 EXCEPTION_MARK;
duke@0 777 _perf_total_compilation =
duke@0 778 PerfDataManager::create_counter(JAVA_CI, "totalTime",
duke@0 779 PerfData::U_Ticks, CHECK);
duke@0 780 }
duke@0 781
duke@0 782
duke@0 783 if (UsePerfData) {
duke@0 784
duke@0 785 EXCEPTION_MARK;
duke@0 786
duke@0 787 // create the jvmstat performance counters
duke@0 788 _perf_osr_compilation =
duke@0 789 PerfDataManager::create_counter(SUN_CI, "osrTime",
duke@0 790 PerfData::U_Ticks, CHECK);
duke@0 791
duke@0 792 _perf_standard_compilation =
duke@0 793 PerfDataManager::create_counter(SUN_CI, "standardTime",
duke@0 794 PerfData::U_Ticks, CHECK);
duke@0 795
duke@0 796 _perf_total_bailout_count =
duke@0 797 PerfDataManager::create_counter(SUN_CI, "totalBailouts",
duke@0 798 PerfData::U_Events, CHECK);
duke@0 799
duke@0 800 _perf_total_invalidated_count =
duke@0 801 PerfDataManager::create_counter(SUN_CI, "totalInvalidates",
duke@0 802 PerfData::U_Events, CHECK);
duke@0 803
duke@0 804 _perf_total_compile_count =
duke@0 805 PerfDataManager::create_counter(SUN_CI, "totalCompiles",
duke@0 806 PerfData::U_Events, CHECK);
duke@0 807 _perf_total_osr_compile_count =
duke@0 808 PerfDataManager::create_counter(SUN_CI, "osrCompiles",
duke@0 809 PerfData::U_Events, CHECK);
duke@0 810
duke@0 811 _perf_total_standard_compile_count =
duke@0 812 PerfDataManager::create_counter(SUN_CI, "standardCompiles",
duke@0 813 PerfData::U_Events, CHECK);
duke@0 814
duke@0 815 _perf_sum_osr_bytes_compiled =
duke@0 816 PerfDataManager::create_counter(SUN_CI, "osrBytes",
duke@0 817 PerfData::U_Bytes, CHECK);
duke@0 818
duke@0 819 _perf_sum_standard_bytes_compiled =
duke@0 820 PerfDataManager::create_counter(SUN_CI, "standardBytes",
duke@0 821 PerfData::U_Bytes, CHECK);
duke@0 822
duke@0 823 _perf_sum_nmethod_size =
duke@0 824 PerfDataManager::create_counter(SUN_CI, "nmethodSize",
duke@0 825 PerfData::U_Bytes, CHECK);
duke@0 826
duke@0 827 _perf_sum_nmethod_code_size =
duke@0 828 PerfDataManager::create_counter(SUN_CI, "nmethodCodeSize",
duke@0 829 PerfData::U_Bytes, CHECK);
duke@0 830
duke@0 831 _perf_last_method =
duke@0 832 PerfDataManager::create_string_variable(SUN_CI, "lastMethod",
duke@0 833 CompilerCounters::cmname_buffer_length,
duke@0 834 "", CHECK);
duke@0 835
duke@0 836 _perf_last_failed_method =
duke@0 837 PerfDataManager::create_string_variable(SUN_CI, "lastFailedMethod",
duke@0 838 CompilerCounters::cmname_buffer_length,
duke@0 839 "", CHECK);
duke@0 840
duke@0 841 _perf_last_invalidated_method =
duke@0 842 PerfDataManager::create_string_variable(SUN_CI, "lastInvalidatedMethod",
duke@0 843 CompilerCounters::cmname_buffer_length,
duke@0 844 "", CHECK);
duke@0 845
duke@0 846 _perf_last_compile_type =
duke@0 847 PerfDataManager::create_variable(SUN_CI, "lastType",
duke@0 848 PerfData::U_None,
duke@0 849 (jlong)CompileBroker::no_compile,
duke@0 850 CHECK);
duke@0 851
duke@0 852 _perf_last_compile_size =
duke@0 853 PerfDataManager::create_variable(SUN_CI, "lastSize",
duke@0 854 PerfData::U_Bytes,
duke@0 855 (jlong)CompileBroker::no_compile,
duke@0 856 CHECK);
duke@0 857
duke@0 858
duke@0 859 _perf_last_failed_type =
duke@0 860 PerfDataManager::create_variable(SUN_CI, "lastFailedType",
duke@0 861 PerfData::U_None,
duke@0 862 (jlong)CompileBroker::no_compile,
duke@0 863 CHECK);
duke@0 864
duke@0 865 _perf_last_invalidated_type =
duke@0 866 PerfDataManager::create_variable(SUN_CI, "lastInvalidatedType",
duke@0 867 PerfData::U_None,
duke@0 868 (jlong)CompileBroker::no_compile,
duke@0 869 CHECK);
duke@0 870 }
duke@0 871
duke@0 872 _initialized = true;
duke@0 873 }
duke@0 874
duke@0 875
duke@0 876
duke@0 877 // ------------------------------------------------------------------
duke@0 878 // CompileBroker::make_compiler_thread
duke@0 879 CompilerThread* CompileBroker::make_compiler_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, TRAPS) {
duke@0 880 CompilerThread* compiler_thread = NULL;
duke@0 881
coleenp@3602 882 Klass* k =
coleenp@2062 883 SystemDictionary::resolve_or_fail(vmSymbols::java_lang_Thread(),
duke@0 884 true, CHECK_0);
duke@0 885 instanceKlassHandle klass (THREAD, k);
duke@0 886 instanceHandle thread_oop = klass->allocate_instance_handle(CHECK_0);
duke@0 887 Handle string = java_lang_String::create_from_str(name, CHECK_0);
duke@0 888
duke@0 889 // Initialize thread_oop to put it into the system threadGroup
duke@0 890 Handle thread_group (THREAD, Universe::system_thread_group());
duke@0 891 JavaValue result(T_VOID);
duke@0 892 JavaCalls::call_special(&result, thread_oop,
duke@0 893 klass,
coleenp@2062 894 vmSymbols::object_initializer_name(),
coleenp@2062 895 vmSymbols::threadgroup_string_void_signature(),
duke@0 896 thread_group,
duke@0 897 string,
duke@0 898 CHECK_0);
duke@0 899
duke@0 900 {
duke@0 901 MutexLocker mu(Threads_lock, THREAD);
duke@0 902 compiler_thread = new CompilerThread(queue, counters);
duke@0 903 // At this point the new CompilerThread data-races with this startup
duke@0 904 // thread (which I believe is the primoridal thread and NOT the VM
duke@0 905 // thread). This means Java bytecodes being executed at startup can
duke@0 906 // queue compile jobs which will run at whatever default priority the
duke@0 907 // newly created CompilerThread runs at.
duke@0 908
duke@0 909
duke@0 910 // At this point it may be possible that no osthread was created for the
duke@0 911 // JavaThread due to lack of memory. We would have to throw an exception
duke@0 912 // in that case. However, since this must work and we do not allow
duke@0 913 // exceptions anyway, check and abort if this fails.
duke@0 914
duke@0 915 if (compiler_thread == NULL || compiler_thread->osthread() == NULL){
duke@0 916 vm_exit_during_initialization("java.lang.OutOfMemoryError",
duke@0 917 "unable to create new native thread");
duke@0 918 }
duke@0 919
duke@0 920 java_lang_Thread::set_thread(thread_oop(), compiler_thread);
duke@0 921
duke@0 922 // Note that this only sets the JavaThread _priority field, which by
duke@0 923 // definition is limited to Java priorities and not OS priorities.
duke@0 924 // The os-priority is set in the CompilerThread startup code itself
phh@3046 925
duke@0 926 java_lang_Thread::set_priority(thread_oop(), NearMaxPriority);
duke@0 927
phh@3046 928 // Note that we cannot call os::set_priority because it expects Java
phh@3046 929 // priorities and we are *explicitly* using OS priorities so that it's
phh@3046 930 // possible to set the compiler thread priority higher than any Java
phh@3046 931 // thread.
duke@0 932
phh@3046 933 int native_prio = CompilerThreadPriority;
phh@3046 934 if (native_prio == -1) {
phh@3046 935 if (UseCriticalCompilerThreadPriority) {
phh@3046 936 native_prio = os::java_to_os_priority[CriticalPriority];
phh@3046 937 } else {
phh@3046 938 native_prio = os::java_to_os_priority[NearMaxPriority];
phh@3046 939 }
phh@3046 940 }
phh@3046 941 os::set_native_priority(compiler_thread, native_prio);
duke@0 942
duke@0 943 java_lang_Thread::set_daemon(thread_oop());
duke@0 944
duke@0 945 compiler_thread->set_threadObj(thread_oop());
duke@0 946 Threads::add(compiler_thread);
duke@0 947 Thread::start(compiler_thread);
duke@0 948 }
phh@3046 949
duke@0 950 // Let go of Threads_lock before yielding
duke@0 951 os::yield(); // make sure that the compiler thread is started early (especially helpful on SOLARIS)
duke@0 952
duke@0 953 return compiler_thread;
duke@0 954 }
duke@0 955
duke@0 956
duke@0 957 // ------------------------------------------------------------------
duke@0 958 // CompileBroker::init_compiler_threads
duke@0 959 //
duke@0 960 // Initialize the compilation queue
iveresov@1703 961 void CompileBroker::init_compiler_threads(int c1_compiler_count, int c2_compiler_count) {
duke@0 962 EXCEPTION_MARK;
twisti@2294 963 #if !defined(ZERO) && !defined(SHARK)
iveresov@1703 964 assert(c2_compiler_count > 0 || c1_compiler_count > 0, "No compilers?");
twisti@2294 965 #endif // !ZERO && !SHARK
iveresov@1703 966 if (c2_compiler_count > 0) {
iveresov@1703 967 _c2_method_queue = new CompileQueue("C2MethodQueue", MethodCompileQueue_lock);
iveresov@1703 968 }
iveresov@1703 969 if (c1_compiler_count > 0) {
iveresov@1703 970 _c1_method_queue = new CompileQueue("C1MethodQueue", MethodCompileQueue_lock);
iveresov@1703 971 }
duke@0 972
iveresov@1703 973 int compiler_count = c1_compiler_count + c2_compiler_count;
iveresov@1703 974
duke@0 975 _method_threads =
zgu@3465 976 new (ResourceObj::C_HEAP, mtCompiler) GrowableArray<CompilerThread*>(compiler_count, true);
duke@0 977
duke@0 978 char name_buffer[256];
iveresov@1703 979 for (int i = 0; i < c2_compiler_count; i++) {
duke@0 980 // Create a name for our thread.
iveresov@1703 981 sprintf(name_buffer, "C2 CompilerThread%d", i);
duke@0 982 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK);
iveresov@1703 983 CompilerThread* new_thread = make_compiler_thread(name_buffer, _c2_method_queue, counters, CHECK);
duke@0 984 _method_threads->append(new_thread);
duke@0 985 }
iveresov@1703 986
iveresov@1703 987 for (int i = c2_compiler_count; i < compiler_count; i++) {
iveresov@1703 988 // Create a name for our thread.
iveresov@1703 989 sprintf(name_buffer, "C1 CompilerThread%d", i);
iveresov@1703 990 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK);
iveresov@1703 991 CompilerThread* new_thread = make_compiler_thread(name_buffer, _c1_method_queue, counters, CHECK);
iveresov@1703 992 _method_threads->append(new_thread);
iveresov@1703 993 }
iveresov@1703 994
duke@0 995 if (UsePerfData) {
duke@0 996 PerfDataManager::create_constant(SUN_CI, "threads", PerfData::U_Bytes,
duke@0 997 compiler_count, CHECK);
duke@0 998 }
duke@0 999 }
duke@0 1000
coleenp@3602 1001
coleenp@3602 1002 // Set the methods on the stack as on_stack so that redefine classes doesn't
coleenp@3602 1003 // reclaim them
coleenp@3602 1004 void CompileBroker::mark_on_stack() {
coleenp@3602 1005 if (_c2_method_queue != NULL) {
coleenp@3602 1006 _c2_method_queue->mark_on_stack();
coleenp@3602 1007 }
coleenp@3602 1008 if (_c1_method_queue != NULL) {
coleenp@3602 1009 _c1_method_queue->mark_on_stack();
coleenp@3602 1010 }
coleenp@3602 1011 }
coleenp@3602 1012
duke@0 1013 // ------------------------------------------------------------------
duke@0 1014 // CompileBroker::is_idle
duke@0 1015 bool CompileBroker::is_idle() {
iveresov@1703 1016 if (_c2_method_queue != NULL && !_c2_method_queue->is_empty()) {
iveresov@1703 1017 return false;
iveresov@1703 1018 } else if (_c1_method_queue != NULL && !_c1_method_queue->is_empty()) {
duke@0 1019 return false;
duke@0 1020 } else {
duke@0 1021 int num_threads = _method_threads->length();
duke@0 1022 for (int i=0; i<num_threads; i++) {
duke@0 1023 if (_method_threads->at(i)->task() != NULL) {
duke@0 1024 return false;
duke@0 1025 }
duke@0 1026 }
duke@0 1027
duke@0 1028 // No pending or active compilations.
duke@0 1029 return true;
duke@0 1030 }
duke@0 1031 }
duke@0 1032
duke@0 1033
duke@0 1034 // ------------------------------------------------------------------
duke@0 1035 // CompileBroker::compile_method
duke@0 1036 //
duke@0 1037 // Request compilation of a method.
duke@0 1038 void CompileBroker::compile_method_base(methodHandle method,
duke@0 1039 int osr_bci,
duke@0 1040 int comp_level,
duke@0 1041 methodHandle hot_method,
duke@0 1042 int hot_count,
duke@0 1043 const char* comment,
iveresov@3017 1044 Thread* thread) {
duke@0 1045 // do nothing if compiler thread(s) is not available
duke@0 1046 if (!_initialized ) {
duke@0 1047 return;
duke@0 1048 }
duke@0 1049
duke@0 1050 guarantee(!method->is_abstract(), "cannot compile abstract methods");
coleenp@3602 1051 assert(method->method_holder()->oop_is_instance(),
duke@0 1052 "sanity check");
coleenp@3816 1053 assert(!method->method_holder()->is_not_initialized(),
duke@0 1054 "method holder must be initialized");
twisti@3534 1055 assert(!method->is_method_handle_intrinsic(), "do not enqueue these guys");
duke@0 1056
duke@0 1057 if (CIPrintRequests) {
duke@0 1058 tty->print("request: ");
duke@0 1059 method->print_short_name(tty);
duke@0 1060 if (osr_bci != InvocationEntryBci) {
duke@0 1061 tty->print(" osr_bci: %d", osr_bci);
duke@0 1062 }
duke@0 1063 tty->print(" comment: %s count: %d", comment, hot_count);
duke@0 1064 if (!hot_method.is_null()) {
duke@0 1065 tty->print(" hot: ");
duke@0 1066 if (hot_method() != method()) {
duke@0 1067 hot_method->print_short_name(tty);
duke@0 1068 } else {
duke@0 1069 tty->print("yes");
duke@0 1070 }
duke@0 1071 }
duke@0 1072 tty->cr();
duke@0 1073 }
duke@0 1074
duke@0 1075 // A request has been made for compilation. Before we do any
duke@0 1076 // real work, check to see if the method has been compiled
duke@0 1077 // in the meantime with a definitive result.
duke@0 1078 if (compilation_is_complete(method, osr_bci, comp_level)) {
duke@0 1079 return;
duke@0 1080 }
duke@0 1081
never@2250 1082 #ifndef PRODUCT
never@2250 1083 if (osr_bci != -1 && !FLAG_IS_DEFAULT(OSROnlyBCI)) {
never@2250 1084 if ((OSROnlyBCI > 0) ? (OSROnlyBCI != osr_bci) : (-OSROnlyBCI == osr_bci)) {
never@2250 1085 // Positive OSROnlyBCI means only compile that bci. Negative means don't compile that BCI.
never@2250 1086 return;
never@2250 1087 }
never@2250 1088 }
never@2250 1089 #endif
iveresov@1703 1090
duke@0 1091 // If this method is already in the compile queue, then
duke@0 1092 // we do not block the current thread.
duke@0 1093 if (compilation_is_in_queue(method, osr_bci)) {
duke@0 1094 // We may want to decay our counter a bit here to prevent
duke@0 1095 // multiple denied requests for compilation. This is an
duke@0 1096 // open compilation policy issue. Note: The other possibility,
duke@0 1097 // in the case that this is a blocking compile request, is to have
duke@0 1098 // all subsequent blocking requesters wait for completion of
duke@0 1099 // ongoing compiles. Note that in this case we'll need a protocol
duke@0 1100 // for freeing the associated compile tasks. [Or we could have
duke@0 1101 // a single static monitor on which all these waiters sleep.]
duke@0 1102 return;
duke@0 1103 }
duke@0 1104
johnc@2391 1105 // If the requesting thread is holding the pending list lock
johnc@2391 1106 // then we just return. We can't risk blocking while holding
johnc@2391 1107 // the pending list lock or a 3-way deadlock may occur
johnc@2391 1108 // between the reference handler thread, a GC (instigated
johnc@2391 1109 // by a compiler thread), and compiled method registration.
coleenp@3612 1110 if (InstanceRefKlass::owns_pending_list_lock(JavaThread::current())) {
johnc@2391 1111 return;
johnc@2391 1112 }
johnc@2391 1113
duke@0 1114 // Outputs from the following MutexLocker block:
duke@0 1115 CompileTask* task = NULL;
duke@0 1116 bool blocking = false;
iveresov@1703 1117 CompileQueue* queue = compile_queue(comp_level);
duke@0 1118
duke@0 1119 // Acquire our lock.
duke@0 1120 {
iveresov@3017 1121 MutexLocker locker(queue->lock(), thread);
duke@0 1122
duke@0 1123 // Make sure the method has not slipped into the queues since
duke@0 1124 // last we checked; note that those checks were "fast bail-outs".
duke@0 1125 // Here we need to be more careful, see 14012000 below.
duke@0 1126 if (compilation_is_in_queue(method, osr_bci)) {
duke@0 1127 return;
duke@0 1128 }
duke@0 1129
duke@0 1130 // We need to check again to see if the compilation has
duke@0 1131 // completed. A previous compilation may have registered
duke@0 1132 // some result.
duke@0 1133 if (compilation_is_complete(method, osr_bci, comp_level)) {
duke@0 1134 return;
duke@0 1135 }
duke@0 1136
duke@0 1137 // We now know that this compilation is not pending, complete,
duke@0 1138 // or prohibited. Assign a compile_id to this compilation
duke@0 1139 // and check to see if it is in our [Start..Stop) range.
duke@0 1140 uint compile_id = assign_compile_id(method, osr_bci);
duke@0 1141 if (compile_id == 0) {
duke@0 1142 // The compilation falls outside the allowed range.
duke@0 1143 return;
duke@0 1144 }
duke@0 1145
duke@0 1146 // Should this thread wait for completion of the compile?
duke@0 1147 blocking = is_compile_blocking(method, osr_bci);
duke@0 1148
duke@0 1149 // We will enter the compilation in the queue.
duke@0 1150 // 14012000: Note that this sets the queued_for_compile bits in
duke@0 1151 // the target method. We can now reason that a method cannot be
duke@0 1152 // queued for compilation more than once, as follows:
duke@0 1153 // Before a thread queues a task for compilation, it first acquires
duke@0 1154 // the compile queue lock, then checks if the method's queued bits
duke@0 1155 // are set or it has already been compiled. Thus there can not be two
duke@0 1156 // instances of a compilation task for the same method on the
duke@0 1157 // compilation queue. Consider now the case where the compilation
duke@0 1158 // thread has already removed a task for that method from the queue
duke@0 1159 // and is in the midst of compiling it. In this case, the
duke@0 1160 // queued_for_compile bits must be set in the method (and these
duke@0 1161 // will be visible to the current thread, since the bits were set
duke@0 1162 // under protection of the compile queue lock, which we hold now.
duke@0 1163 // When the compilation completes, the compiler thread first sets
duke@0 1164 // the compilation result and then clears the queued_for_compile
duke@0 1165 // bits. Neither of these actions are protected by a barrier (or done
duke@0 1166 // under the protection of a lock), so the only guarantee we have
duke@0 1167 // (on machines with TSO (Total Store Order)) is that these values
duke@0 1168 // will update in that order. As a result, the only combinations of
duke@0 1169 // these bits that the current thread will see are, in temporal order:
duke@0 1170 // <RESULT, QUEUE> :
duke@0 1171 // <0, 1> : in compile queue, but not yet compiled
duke@0 1172 // <1, 1> : compiled but queue bit not cleared
duke@0 1173 // <1, 0> : compiled and queue bit cleared
duke@0 1174 // Because we first check the queue bits then check the result bits,
duke@0 1175 // we are assured that we cannot introduce a duplicate task.
duke@0 1176 // Note that if we did the tests in the reverse order (i.e. check
duke@0 1177 // result then check queued bit), we could get the result bit before
duke@0 1178 // the compilation completed, and the queue bit after the compilation
duke@0 1179 // completed, and end up introducing a "duplicate" (redundant) task.
duke@0 1180 // In that case, the compiler thread should first check if a method
duke@0 1181 // has already been compiled before trying to compile it.
duke@0 1182 // NOTE: in the event that there are multiple compiler threads and
duke@0 1183 // there is de-optimization/recompilation, things will get hairy,
duke@0 1184 // and in that case it's best to protect both the testing (here) of
duke@0 1185 // these bits, and their updating (here and elsewhere) under a
duke@0 1186 // common lock.
iveresov@1703 1187 task = create_compile_task(queue,
duke@0 1188 compile_id, method,
duke@0 1189 osr_bci, comp_level,
duke@0 1190 hot_method, hot_count, comment,
duke@0 1191 blocking);
duke@0 1192 }
duke@0 1193
duke@0 1194 if (blocking) {
duke@0 1195 wait_for_completion(task);
duke@0 1196 }
duke@0 1197 }
duke@0 1198
duke@0 1199
duke@0 1200 nmethod* CompileBroker::compile_method(methodHandle method, int osr_bci,
iveresov@1703 1201 int comp_level,
duke@0 1202 methodHandle hot_method, int hot_count,
iveresov@3017 1203 const char* comment, Thread* THREAD) {
duke@0 1204 // make sure arguments make sense
coleenp@3602 1205 assert(method->method_holder()->oop_is_instance(), "not an instance method");
duke@0 1206 assert(osr_bci == InvocationEntryBci || (0 <= osr_bci && osr_bci < method->code_size()), "bci out of range");
duke@0 1207 assert(!method->is_abstract() && (osr_bci == InvocationEntryBci || !method->is_native()), "cannot compile abstract/native methods");
coleenp@3816 1208 assert(!method->method_holder()->is_not_initialized(), "method holder must be initialized");
iignatyev@4473 1209 // allow any levels for WhiteBox
iignatyev@4473 1210 assert(WhiteBoxAPI || TieredCompilation || comp_level == CompLevel_highest_tier, "only CompLevel_highest_tier must be used in non-tiered");
duke@0 1211 // return quickly if possible
duke@0 1212
duke@0 1213 // lock, make sure that the compilation
duke@0 1214 // isn't prohibited in a straightforward way.
morris@4336 1215 AbstractCompiler *comp = CompileBroker::compiler(comp_level);
morris@4336 1216 if (comp == NULL || !comp->can_compile_method(method) ||
morris@4336 1217 compilation_is_prohibited(method, osr_bci, comp_level)) {
duke@0 1218 return NULL;
duke@0 1219 }
duke@0 1220
duke@0 1221 if (osr_bci == InvocationEntryBci) {
duke@0 1222 // standard compilation
duke@0 1223 nmethod* method_code = method->code();
iveresov@1703 1224 if (method_code != NULL) {
iveresov@1703 1225 if (compilation_is_complete(method, osr_bci, comp_level)) {
iveresov@1703 1226 return method_code;
iveresov@1703 1227 }
duke@0 1228 }
duke@0 1229 if (method->is_not_compilable(comp_level)) return NULL;
kvn@1202 1230
kvn@1300 1231 if (UseCodeCacheFlushing) {
kvn@1300 1232 nmethod* saved = CodeCache::find_and_remove_saved_code(method());
kvn@1300 1233 if (saved != NULL) {
kvn@1300 1234 method->set_code(method, saved);
kvn@1300 1235 return saved;
kvn@1300 1236 }
kvn@1202 1237 }
kvn@1202 1238
duke@0 1239 } else {
duke@0 1240 // osr compilation
duke@0 1241 #ifndef TIERED
duke@0 1242 // seems like an assert of dubious value
iveresov@1703 1243 assert(comp_level == CompLevel_highest_tier,
duke@0 1244 "all OSR compiles are assumed to be at a single compilation lavel");
duke@0 1245 #endif // TIERED
iveresov@1703 1246 // We accept a higher level osr method
iveresov@1703 1247 nmethod* nm = method->lookup_osr_nmethod_for(osr_bci, comp_level, false);
duke@0 1248 if (nm != NULL) return nm;
twisti@3676 1249 if (method->is_not_osr_compilable(comp_level)) return NULL;
duke@0 1250 }
duke@0 1251
duke@0 1252 assert(!HAS_PENDING_EXCEPTION, "No exception should be present");
duke@0 1253 // some prerequisites that are compiler specific
morris@4336 1254 if (comp->is_c2() || comp->is_shark()) {
iveresov@3017 1255 method->constants()->resolve_string_constants(CHECK_AND_CLEAR_NULL);
duke@0 1256 // Resolve all classes seen in the signature of the method
duke@0 1257 // we are compiling.
coleenp@3602 1258 Method::load_signature_classes(method, CHECK_AND_CLEAR_NULL);
duke@0 1259 }
duke@0 1260
duke@0 1261 // If the method is native, do the lookup in the thread requesting
duke@0 1262 // the compilation. Native lookups can load code, which is not
duke@0 1263 // permitted during compilation.
duke@0 1264 //
duke@0 1265 // Note: A native method implies non-osr compilation which is
duke@0 1266 // checked with an assertion at the entry of this method.
twisti@3534 1267 if (method->is_native() && !method->is_method_handle_intrinsic()) {
duke@0 1268 bool in_base_library;
duke@0 1269 address adr = NativeLookup::lookup(method, in_base_library, THREAD);
duke@0 1270 if (HAS_PENDING_EXCEPTION) {
duke@0 1271 // In case of an exception looking up the method, we just forget
duke@0 1272 // about it. The interpreter will kick-in and throw the exception.
duke@0 1273 method->set_not_compilable(); // implies is_not_osr_compilable()
duke@0 1274 CLEAR_PENDING_EXCEPTION;
duke@0 1275 return NULL;
duke@0 1276 }
duke@0 1277 assert(method->has_native_function(), "must have native code by now");
duke@0 1278 }
duke@0 1279
duke@0 1280 // RedefineClasses() has replaced this method; just return
duke@0 1281 if (method->is_old()) {
duke@0 1282 return NULL;
duke@0 1283 }
duke@0 1284
duke@0 1285 // JVMTI -- post_compile_event requires jmethod_id() that may require
duke@0 1286 // a lock the compiling thread can not acquire. Prefetch it here.
duke@0 1287 if (JvmtiExport::should_post_compiled_method_load()) {
duke@0 1288 method->jmethod_id();
duke@0 1289 }
duke@0 1290
kvn@1202 1291 // If the compiler is shut off due to code cache flushing or otherwise,
kvn@1202 1292 // fail out now so blocking compiles dont hang the java thread
kvn@1202 1293 if (!should_compile_new_jobs() || (UseCodeCacheFlushing && CodeCache::needs_flushing())) {
iveresov@1703 1294 CompilationPolicy::policy()->delay_compilation(method());
kvn@1202 1295 return NULL;
kvn@1202 1296 }
kvn@1202 1297
duke@0 1298 // do the compilation
duke@0 1299 if (method->is_native()) {
twisti@3534 1300 if (!PreferInterpreterNativeStubs || method->is_method_handle_intrinsic()) {
twisti@2252 1301 // Acquire our lock.
twisti@2252 1302 int compile_id;
twisti@2252 1303 {
twisti@2252 1304 MutexLocker locker(MethodCompileQueue_lock, THREAD);
twisti@2252 1305 compile_id = assign_compile_id(method, standard_entry_bci);
twisti@2252 1306 }
twisti@2252 1307 (void) AdapterHandlerLibrary::create_native_wrapper(method, compile_id);
duke@0 1308 } else {
duke@0 1309 return NULL;
duke@0 1310 }
duke@0 1311 } else {
iveresov@3017 1312 compile_method_base(method, osr_bci, comp_level, hot_method, hot_count, comment, THREAD);
duke@0 1313 }
duke@0 1314
duke@0 1315 // return requested nmethod
iveresov@1703 1316 // We accept a higher level osr method
iveresov@1703 1317 return osr_bci == InvocationEntryBci ? method->code() : method->lookup_osr_nmethod_for(osr_bci, comp_level, false);
duke@0 1318 }
duke@0 1319
duke@0 1320
duke@0 1321 // ------------------------------------------------------------------
duke@0 1322 // CompileBroker::compilation_is_complete
duke@0 1323 //
duke@0 1324 // See if compilation of this method is already complete.
duke@0 1325 bool CompileBroker::compilation_is_complete(methodHandle method,
duke@0 1326 int osr_bci,
duke@0 1327 int comp_level) {
duke@0 1328 bool is_osr = (osr_bci != standard_entry_bci);
duke@0 1329 if (is_osr) {
twisti@3676 1330 if (method->is_not_osr_compilable(comp_level)) {
duke@0 1331 return true;
duke@0 1332 } else {
iveresov@1703 1333 nmethod* result = method->lookup_osr_nmethod_for(osr_bci, comp_level, true);
duke@0 1334 return (result != NULL);
duke@0 1335 }
duke@0 1336 } else {
duke@0 1337 if (method->is_not_compilable(comp_level)) {
duke@0 1338 return true;
duke@0 1339 } else {
duke@0 1340 nmethod* result = method->code();
duke@0 1341 if (result == NULL) return false;
iveresov@1703 1342 return comp_level == result->comp_level();
duke@0 1343 }
duke@0 1344 }
duke@0 1345 }
duke@0 1346
duke@0 1347
duke@0 1348 // ------------------------------------------------------------------
duke@0 1349 // CompileBroker::compilation_is_in_queue
duke@0 1350 //
duke@0 1351 // See if this compilation is already requested.
duke@0 1352 //
duke@0 1353 // Implementation note: there is only a single "is in queue" bit
duke@0 1354 // for each method. This means that the check below is overly
duke@0 1355 // conservative in the sense that an osr compilation in the queue
duke@0 1356 // will block a normal compilation from entering the queue (and vice
duke@0 1357 // versa). This can be remedied by a full queue search to disambiguate
duke@0 1358 // cases. If it is deemed profitible, this may be done.
duke@0 1359 bool CompileBroker::compilation_is_in_queue(methodHandle method,
iveresov@1703 1360 int osr_bci) {
duke@0 1361 return method->queued_for_compilation();
duke@0 1362 }
duke@0 1363
duke@0 1364 // ------------------------------------------------------------------
duke@0 1365 // CompileBroker::compilation_is_prohibited
duke@0 1366 //
duke@0 1367 // See if this compilation is not allowed.
duke@0 1368 bool CompileBroker::compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level) {
duke@0 1369 bool is_native = method->is_native();
duke@0 1370 // Some compilers may not support the compilation of natives.
morris@4336 1371 AbstractCompiler *comp = compiler(comp_level);
duke@0 1372 if (is_native &&
morris@4336 1373 (!CICompileNatives || comp == NULL || !comp->supports_native())) {
iveresov@1703 1374 method->set_not_compilable_quietly(comp_level);
duke@0 1375 return true;
duke@0 1376 }
duke@0 1377
duke@0 1378 bool is_osr = (osr_bci != standard_entry_bci);
duke@0 1379 // Some compilers may not support on stack replacement.
duke@0 1380 if (is_osr &&
morris@4336 1381 (!CICompileOSR || comp == NULL || !comp->supports_osr())) {
twisti@3676 1382 method->set_not_osr_compilable(comp_level);
duke@0 1383 return true;
duke@0 1384 }
duke@0 1385
duke@0 1386 // The method may be explicitly excluded by the user.
duke@0 1387 bool quietly;
duke@0 1388 if (CompilerOracle::should_exclude(method, quietly)) {
duke@0 1389 if (!quietly) {
duke@0 1390 // This does not happen quietly...
duke@0 1391 ResourceMark rm;
duke@0 1392 tty->print("### Excluding %s:%s",
duke@0 1393 method->is_native() ? "generation of native wrapper" : "compile",
duke@0 1394 (method->is_static() ? " static" : ""));
duke@0 1395 method->print_short_name(tty);
duke@0 1396 tty->cr();
duke@0 1397 }
vlivanov@4104 1398 method->set_not_compilable(CompLevel_all, !quietly, "excluded by CompilerOracle");
duke@0 1399 }
duke@0 1400
duke@0 1401 return false;
duke@0 1402 }
duke@0 1403
duke@0 1404
duke@0 1405 // ------------------------------------------------------------------
duke@0 1406 // CompileBroker::assign_compile_id
duke@0 1407 //
duke@0 1408 // Assign a serialized id number to this compilation request. If the
duke@0 1409 // number falls out of the allowed range, return a 0. OSR
duke@0 1410 // compilations may be numbered separately from regular compilations
duke@0 1411 // if certain debugging flags are used.
duke@0 1412 uint CompileBroker::assign_compile_id(methodHandle method, int osr_bci) {
iveresov@1703 1413 assert(MethodCompileQueue_lock->owner() == Thread::current(),
duke@0 1414 "must hold the compilation queue lock");
duke@0 1415 bool is_osr = (osr_bci != standard_entry_bci);
duke@0 1416 uint id;
duke@0 1417 if (CICountOSR && is_osr) {
duke@0 1418 id = ++_osr_compilation_id;
duke@0 1419 if ((uint)CIStartOSR <= id && id < (uint)CIStopOSR) {
duke@0 1420 return id;
duke@0 1421 }
duke@0 1422 } else {
duke@0 1423 id = ++_compilation_id;
duke@0 1424 if ((uint)CIStart <= id && id < (uint)CIStop) {
duke@0 1425 return id;
duke@0 1426 }
duke@0 1427 }
duke@0 1428
duke@0 1429 // Method was not in the appropriate compilation range.
kvn@1208 1430 method->set_not_compilable_quietly();
duke@0 1431 return 0;
duke@0 1432 }
duke@0 1433
duke@0 1434
duke@0 1435 // ------------------------------------------------------------------
duke@0 1436 // CompileBroker::is_compile_blocking
duke@0 1437 //
duke@0 1438 // Should the current thread be blocked until this compilation request
duke@0 1439 // has been fulfilled?
duke@0 1440 bool CompileBroker::is_compile_blocking(methodHandle method, int osr_bci) {
coleenp@3612 1441 assert(!InstanceRefKlass::owns_pending_list_lock(JavaThread::current()), "possible deadlock");
johnc@2391 1442 return !BackgroundCompilation;
duke@0 1443 }
duke@0 1444
duke@0 1445
duke@0 1446 // ------------------------------------------------------------------
duke@0 1447 // CompileBroker::preload_classes
duke@0 1448 void CompileBroker::preload_classes(methodHandle method, TRAPS) {
duke@0 1449 // Move this code over from c1_Compiler.cpp
duke@0 1450 ShouldNotReachHere();
duke@0 1451 }
duke@0 1452
duke@0 1453
duke@0 1454 // ------------------------------------------------------------------
duke@0 1455 // CompileBroker::create_compile_task
duke@0 1456 //
duke@0 1457 // Create a CompileTask object representing the current request for
duke@0 1458 // compilation. Add this task to the queue.
duke@0 1459 CompileTask* CompileBroker::create_compile_task(CompileQueue* queue,
duke@0 1460 int compile_id,
duke@0 1461 methodHandle method,
duke@0 1462 int osr_bci,
duke@0 1463 int comp_level,
duke@0 1464 methodHandle hot_method,
duke@0 1465 int hot_count,
duke@0 1466 const char* comment,
duke@0 1467 bool blocking) {
duke@0 1468 CompileTask* new_task = allocate_task();
duke@0 1469 new_task->initialize(compile_id, method, osr_bci, comp_level,
duke@0 1470 hot_method, hot_count, comment,
duke@0 1471 blocking);
duke@0 1472 queue->add(new_task);
duke@0 1473 return new_task;
duke@0 1474 }
duke@0 1475
duke@0 1476
duke@0 1477 // ------------------------------------------------------------------
duke@0 1478 // CompileBroker::allocate_task
duke@0 1479 //
duke@0 1480 // Allocate a CompileTask, from the free list if possible.
duke@0 1481 CompileTask* CompileBroker::allocate_task() {
duke@0 1482 MutexLocker locker(CompileTaskAlloc_lock);
duke@0 1483 CompileTask* task = NULL;
duke@0 1484 if (_task_free_list != NULL) {
duke@0 1485 task = _task_free_list;
duke@0 1486 _task_free_list = task->next();
duke@0 1487 task->set_next(NULL);
duke@0 1488 } else {
duke@0 1489 task = new CompileTask();
duke@0 1490 task->set_next(NULL);
duke@0 1491 }
duke@0 1492 return task;
duke@0 1493 }
duke@0 1494
duke@0 1495
duke@0 1496 // ------------------------------------------------------------------
duke@0 1497 // CompileBroker::free_task
duke@0 1498 //
duke@0 1499 // Add a task to the free list.
duke@0 1500 void CompileBroker::free_task(CompileTask* task) {
duke@0 1501 MutexLocker locker(CompileTaskAlloc_lock);
duke@0 1502 task->free();
duke@0 1503 task->set_next(_task_free_list);
duke@0 1504 _task_free_list = task;
duke@0 1505 }
duke@0 1506
duke@0 1507
duke@0 1508 // ------------------------------------------------------------------
duke@0 1509 // CompileBroker::wait_for_completion
duke@0 1510 //
duke@0 1511 // Wait for the given method CompileTask to complete.
duke@0 1512 void CompileBroker::wait_for_completion(CompileTask* task) {
duke@0 1513 if (CIPrintCompileQueue) {
duke@0 1514 tty->print_cr("BLOCKING FOR COMPILE");
duke@0 1515 }
duke@0 1516
duke@0 1517 assert(task->is_blocking(), "can only wait on blocking task");
duke@0 1518
duke@0 1519 JavaThread *thread = JavaThread::current();
duke@0 1520 thread->set_blocked_on_compilation(true);
duke@0 1521
coleenp@3602 1522 methodHandle method(thread, task->method());
duke@0 1523 {
duke@0 1524 MutexLocker waiter(task->lock(), thread);
duke@0 1525
duke@0 1526 while (!task->is_complete())
duke@0 1527 task->lock()->wait();
duke@0 1528 }
duke@0 1529 // It is harmless to check this status without the lock, because
duke@0 1530 // completion is a stable property (until the task object is recycled).
duke@0 1531 assert(task->is_complete(), "Compilation should have completed");
duke@0 1532 assert(task->code_handle() == NULL, "must be reset");
duke@0 1533
duke@0 1534 thread->set_blocked_on_compilation(false);
duke@0 1535
duke@0 1536 // By convention, the waiter is responsible for recycling a
duke@0 1537 // blocking CompileTask. Since there is only one waiter ever
duke@0 1538 // waiting on a CompileTask, we know that no one else will
duke@0 1539 // be using this CompileTask; we can free it.
duke@0 1540 free_task(task);
duke@0 1541 }
duke@0 1542
duke@0 1543 // ------------------------------------------------------------------
duke@0 1544 // CompileBroker::compiler_thread_loop
duke@0 1545 //
duke@0 1546 // The main loop run by a CompilerThread.
duke@0 1547 void CompileBroker::compiler_thread_loop() {
duke@0 1548 CompilerThread* thread = CompilerThread::current();
duke@0 1549 CompileQueue* queue = thread->queue();
duke@0 1550
duke@0 1551 // For the thread that initializes the ciObjectFactory
duke@0 1552 // this resource mark holds all the shared objects
duke@0 1553 ResourceMark rm;
duke@0 1554
duke@0 1555 // First thread to get here will initialize the compiler interface
duke@0 1556
duke@0 1557 if (!ciObjectFactory::is_initialized()) {
duke@0 1558 ASSERT_IN_VM;
duke@0 1559 MutexLocker only_one (CompileThread_lock, thread);
duke@0 1560 if (!ciObjectFactory::is_initialized()) {
duke@0 1561 ciObjectFactory::initialize();
duke@0 1562 }
duke@0 1563 }
duke@0 1564
duke@0 1565 // Open a log.
duke@0 1566 if (LogCompilation) {
duke@0 1567 init_compiler_thread_log();
duke@0 1568 }
duke@0 1569 CompileLog* log = thread->log();
duke@0 1570 if (log != NULL) {
vlivanov@3719 1571 log->begin_elem("start_compile_thread name='%s' thread='" UINTX_FORMAT "' process='%d'",
vlivanov@3719 1572 thread->name(),
duke@0 1573 os::current_thread_id(),
duke@0 1574 os::current_process_id());
duke@0 1575 log->stamp();
duke@0 1576 log->end_elem();
duke@0 1577 }
duke@0 1578
duke@0 1579 while (true) {
duke@0 1580 {
duke@0 1581 // We need this HandleMark to avoid leaking VM handles.
duke@0 1582 HandleMark hm(thread);
kvn@1202 1583
neliasso@4517 1584 if (CodeCache::unallocated_capacity() < CodeCacheMinimumFreeSpace) {
kvn@1202 1585 // the code cache is really full
kvn@1202 1586 handle_full_code_cache();
kvn@1202 1587 } else if (UseCodeCacheFlushing && CodeCache::needs_flushing()) {
kvn@1202 1588 // Attempt to start cleaning the code cache while there is still a little headroom
kvn@1202 1589 NMethodSweeper::handle_full_code_cache(false);
duke@0 1590 }
duke@0 1591
duke@0 1592 CompileTask* task = queue->get();
duke@0 1593
duke@0 1594 // Give compiler threads an extra quanta. They tend to be bursty and
duke@0 1595 // this helps the compiler to finish up the job.
duke@0 1596 if( CompilerThreadHintNoPreempt )
duke@0 1597 os::hint_no_preempt();
duke@0 1598
duke@0 1599 // trace per thread time and compile statistics
duke@0 1600 CompilerCounters* counters = ((CompilerThread*)thread)->counters();
duke@0 1601 PerfTraceTimedEvent(counters->time_counter(), counters->compile_counter());
duke@0 1602
duke@0 1603 // Assign the task to the current thread. Mark this compilation
duke@0 1604 // thread as active for the profiler.
duke@0 1605 CompileTaskWrapper ctw(task);
duke@0 1606 nmethodLocker result_handle; // (handle for the nmethod produced by this task)
duke@0 1607 task->set_code_handle(&result_handle);
coleenp@3602 1608 methodHandle method(thread, task->method());
duke@0 1609
duke@0 1610 // Never compile a method if breakpoints are present in it
duke@0 1611 if (method()->number_of_breakpoints() == 0) {
duke@0 1612 // Compile the method.
kvn@1202 1613 if ((UseCompiler || AlwaysCompileLoopMethods) && CompileBroker::should_compile_new_jobs()) {
duke@0 1614 #ifdef COMPILER1
duke@0 1615 // Allow repeating compilations for the purpose of benchmarking
duke@0 1616 // compile speed. This is not useful for customers.
duke@0 1617 if (CompilationRepeat != 0) {
duke@0 1618 int compile_count = CompilationRepeat;
duke@0 1619 while (compile_count > 0) {
duke@0 1620 invoke_compiler_on_method(task);
duke@0 1621 nmethod* nm = method->code();
duke@0 1622 if (nm != NULL) {
duke@0 1623 nm->make_zombie();
duke@0 1624 method->clear_code();
duke@0 1625 }
duke@0 1626 compile_count--;
duke@0 1627 }
duke@0 1628 }
duke@0 1629 #endif /* COMPILER1 */
duke@0 1630 invoke_compiler_on_method(task);
duke@0 1631 } else {
duke@0 1632 // After compilation is disabled, remove remaining methods from queue
duke@0 1633 method->clear_queued_for_compilation();
duke@0 1634 }
duke@0 1635 }
duke@0 1636 }
duke@0 1637 }
duke@0 1638 }
duke@0 1639
duke@0 1640
duke@0 1641 // ------------------------------------------------------------------
duke@0 1642 // CompileBroker::init_compiler_thread_log
duke@0 1643 //
duke@0 1644 // Set up state required by +LogCompilation.
duke@0 1645 void CompileBroker::init_compiler_thread_log() {
duke@0 1646 CompilerThread* thread = CompilerThread::current();
duke@0 1647 char fileBuf[4*K];
duke@0 1648 FILE* fp = NULL;
duke@0 1649 char* file = NULL;
duke@0 1650 intx thread_id = os::current_thread_id();
duke@0 1651 for (int try_temp_dir = 1; try_temp_dir >= 0; try_temp_dir--) {
duke@0 1652 const char* dir = (try_temp_dir ? os::get_temp_directory() : NULL);
coleenp@1353 1653 if (dir == NULL) {
coleenp@1353 1654 jio_snprintf(fileBuf, sizeof(fileBuf), "hs_c" UINTX_FORMAT "_pid%u.log",
coleenp@1353 1655 thread_id, os::current_process_id());
coleenp@1353 1656 } else {
coleenp@1353 1657 jio_snprintf(fileBuf, sizeof(fileBuf),
coleenp@1353 1658 "%s%shs_c" UINTX_FORMAT "_pid%u.log", dir,
coleenp@1353 1659 os::file_separator(), thread_id, os::current_process_id());
coleenp@1353 1660 }
duke@0 1661 fp = fopen(fileBuf, "at");
duke@0 1662 if (fp != NULL) {
zgu@3465 1663 file = NEW_C_HEAP_ARRAY(char, strlen(fileBuf)+1, mtCompiler);
duke@0 1664 strcpy(file, fileBuf);
duke@0 1665 break;
duke@0 1666 }
duke@0 1667 }
duke@0 1668 if (fp == NULL) {
duke@0 1669 warning("Cannot open log file: %s", fileBuf);
duke@0 1670 } else {
duke@0 1671 if (LogCompilation && Verbose)
duke@0 1672 tty->print_cr("Opening compilation log %s", file);
zgu@3465 1673 CompileLog* log = new(ResourceObj::C_HEAP, mtCompiler) CompileLog(file, fp, thread_id);
duke@0 1674 thread->init_log(log);
duke@0 1675
duke@0 1676 if (xtty != NULL) {
duke@0 1677 ttyLocker ttyl;
duke@0 1678
duke@0 1679 // Record any per thread log files
duke@0 1680 xtty->elem("thread_logfile thread='%d' filename='%s'", thread_id, file);
duke@0 1681 }
duke@0 1682 }
duke@0 1683 }
duke@0 1684
duke@0 1685 // ------------------------------------------------------------------
duke@0 1686 // CompileBroker::set_should_block
duke@0 1687 //
duke@0 1688 // Set _should_block.
duke@0 1689 // Call this from the VM, with Threads_lock held and a safepoint requested.
duke@0 1690 void CompileBroker::set_should_block() {
duke@0 1691 assert(Threads_lock->owner() == Thread::current(), "must have threads lock");
duke@0 1692 assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint already");
duke@0 1693 #ifndef PRODUCT
duke@0 1694 if (PrintCompilation && (Verbose || WizardMode))
duke@0 1695 tty->print_cr("notifying compiler thread pool to block");
duke@0 1696 #endif
duke@0 1697 _should_block = true;
duke@0 1698 }
duke@0 1699
duke@0 1700 // ------------------------------------------------------------------
duke@0 1701 // CompileBroker::maybe_block
duke@0 1702 //
duke@0 1703 // Call this from the compiler at convenient points, to poll for _should_block.
duke@0 1704 void CompileBroker::maybe_block() {
duke@0 1705 if (_should_block) {
duke@0 1706 #ifndef PRODUCT
duke@0 1707 if (PrintCompilation && (Verbose || WizardMode))
duke@0 1708 tty->print_cr("compiler thread " INTPTR_FORMAT " poll detects block request", Thread::current());
duke@0 1709 #endif
duke@0 1710 ThreadInVMfromNative tivfn(JavaThread::current());
duke@0 1711 }
duke@0 1712 }
duke@0 1713
vladidan@4003 1714 // wrapper for CodeCache::print_summary()
vladidan@4003 1715 static void codecache_print(bool detailed)
vladidan@4003 1716 {
vladidan@4003 1717 ResourceMark rm;
vladidan@4003 1718 stringStream s;
vladidan@4003 1719 // Dump code cache into a buffer before locking the tty,
vladidan@4003 1720 {
vladidan@4003 1721 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
vladidan@4003 1722 CodeCache::print_summary(&s, detailed);
vladidan@4003 1723 }
vladidan@4003 1724 ttyLocker ttyl;
vladidan@4003 1725 tty->print_cr(s.as_string());
vladidan@4003 1726 }
vladidan@4003 1727
duke@0 1728 // ------------------------------------------------------------------
duke@0 1729 // CompileBroker::invoke_compiler_on_method
duke@0 1730 //
duke@0 1731 // Compile a method.
duke@0 1732 //
duke@0 1733 void CompileBroker::invoke_compiler_on_method(CompileTask* task) {
duke@0 1734 if (PrintCompilation) {
duke@0 1735 ResourceMark rm;
duke@0 1736 task->print_line();
duke@0 1737 }
duke@0 1738 elapsedTimer time;
duke@0 1739
duke@0 1740 CompilerThread* thread = CompilerThread::current();
duke@0 1741 ResourceMark rm(thread);
duke@0 1742
never@3064 1743 if (LogEvents) {
never@3064 1744 _compilation_log->log_compile(thread, task);
never@3064 1745 }
never@3064 1746
duke@0 1747 // Common flags.
duke@0 1748 uint compile_id = task->compile_id();
duke@0 1749 int osr_bci = task->osr_bci();
duke@0 1750 bool is_osr = (osr_bci != standard_entry_bci);
duke@0 1751 bool should_log = (thread->log() != NULL);
duke@0 1752 bool should_break = false;
morris@4336 1753 int task_level = task->comp_level();
duke@0 1754 {
duke@0 1755 // create the handle inside it's own block so it can't
duke@0 1756 // accidentally be referenced once the thread transitions to
duke@0 1757 // native. The NoHandleMark before the transition should catch
duke@0 1758 // any cases where this occurs in the future.
coleenp@3602 1759 methodHandle method(thread, task->method());
duke@0 1760 should_break = check_break_at(method, compile_id, is_osr);
duke@0 1761 if (should_log && !CompilerOracle::should_log(method)) {
duke@0 1762 should_log = false;
duke@0 1763 }
duke@0 1764 assert(!method->is_native(), "no longer compile natives");
duke@0 1765
duke@0 1766 // Save information about this method in case of failure.
morris@4336 1767 set_last_compile(thread, method, is_osr, task_level);
duke@0 1768
morris@4336 1769 DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler(task_level), method,
morris@4336 1770 compiler_name(task_level));
duke@0 1771 }
duke@0 1772
duke@0 1773 // Allocate a new set of JNI handles.
duke@0 1774 push_jni_handle_block();
coleenp@3602 1775 Method* target_handle = task->method();
duke@0 1776 int compilable = ciEnv::MethodCompilable;
duke@0 1777 {
duke@0 1778 int system_dictionary_modification_counter;
duke@0 1779 {
duke@0 1780 MutexLocker locker(Compile_lock, thread);
duke@0 1781 system_dictionary_modification_counter = SystemDictionary::number_of_modifications();
duke@0 1782 }
duke@0 1783
duke@0 1784 NoHandleMark nhm;
duke@0 1785 ThreadToNativeFromVM ttn(thread);
duke@0 1786
duke@0 1787 ciEnv ci_env(task, system_dictionary_modification_counter);
duke@0 1788 if (should_break) {
duke@0 1789 ci_env.set_break_at_compile(true);
duke@0 1790 }
duke@0 1791 if (should_log) {
duke@0 1792 ci_env.set_log(thread->log());
duke@0 1793 }
duke@0 1794 assert(thread->env() == &ci_env, "set by ci_env");
duke@0 1795 // The thread-env() field is cleared in ~CompileTaskWrapper.
duke@0 1796
kvn@780 1797 // Cache Jvmti state
kvn@780 1798 ci_env.cache_jvmti_state();
kvn@780 1799
kvn@780 1800 // Cache DTrace flags
kvn@780 1801 ci_env.cache_dtrace_flags();
kvn@780 1802
duke@0 1803 ciMethod* target = ci_env.get_method_from_handle(target_handle);
duke@0 1804
duke@0 1805 TraceTime t1("compilation", &time);
duke@0 1806
morris@4336 1807 AbstractCompiler *comp = compiler(task_level);
morris@4336 1808 if (comp == NULL) {
morris@4336 1809 ci_env.record_method_not_compilable("no compiler", !TieredCompilation);
morris@4336 1810 } else {
morris@4336 1811 comp->compile_method(&ci_env, target, osr_bci);
morris@4336 1812 }
duke@0 1813
duke@0 1814 if (!ci_env.failing() && task->code() == NULL) {
duke@0 1815 //assert(false, "compiler should always document failure");
duke@0 1816 // The compiler elected, without comment, not to register a result.
duke@0 1817 // Do not attempt further compilations of this method.
iveresov@1871 1818 ci_env.record_method_not_compilable("compile failed", !TieredCompilation);
duke@0 1819 }
duke@0 1820
never@3064 1821 // Copy this bit to the enclosing block:
never@3064 1822 compilable = ci_env.compilable();
never@3064 1823
duke@0 1824 if (ci_env.failing()) {
never@3064 1825 const char* retry_message = ci_env.retry_message();
never@3064 1826 if (_compilation_log != NULL) {
never@3064 1827 _compilation_log->log_failure(thread, task, ci_env.failure_reason(), retry_message);
never@3064 1828 }
duke@0 1829 if (PrintCompilation) {
twisti@3676 1830 FormatBufferResource msg = retry_message != NULL ?
twisti@3676 1831 err_msg_res("COMPILE SKIPPED: %s (%s)", ci_env.failure_reason(), retry_message) :
twisti@3676 1832 err_msg_res("COMPILE SKIPPED: %s", ci_env.failure_reason());
twisti@3676 1833 task->print_compilation(tty, msg);
duke@0 1834 }
duke@0 1835 } else {
duke@0 1836 task->mark_success();
duke@0 1837 task->set_num_inlined_bytecodes(ci_env.num_inlined_bytecodes());
never@3064 1838 if (_compilation_log != NULL) {
never@3064 1839 nmethod* code = task->code();
never@3064 1840 if (code != NULL) {
never@3064 1841 _compilation_log->log_nmethod(thread, code);
never@3064 1842 }
never@3064 1843 }
duke@0 1844 }
duke@0 1845 }
duke@0 1846 pop_jni_handle_block();
duke@0 1847
coleenp@3602 1848 methodHandle method(thread, task->method());
duke@0 1849
morris@4336 1850 DTRACE_METHOD_COMPILE_END_PROBE(compiler(task_level), method,
morris@4336 1851 compiler_name(task_level), task->is_success());
duke@0 1852
duke@0 1853 collect_statistics(thread, time, task);
duke@0 1854
kvn@2825 1855 if (PrintCompilation && PrintCompilation2) {
kvn@2808 1856 tty->print("%7d ", (int) tty->time_stamp().milliseconds()); // print timestamp
kvn@2808 1857 tty->print("%4d ", compile_id); // print compilation number
kvn@2808 1858 tty->print("%s ", (is_osr ? "%" : " "));
kvn@2825 1859 int code_size = (task->code() == NULL) ? 0 : task->code()->total_size();
kvn@2883 1860 tty->print_cr("size: %d time: %d inlined: %d bytes", code_size, (int)time.milliseconds(), task->num_inlined_bytecodes());
kvn@2808 1861 }
kvn@2808 1862
vladidan@4003 1863 if (PrintCodeCacheOnCompilation)
vladidan@4003 1864 codecache_print(/* detailed= */ false);
vladidan@4003 1865
twisti@3676 1866 // Disable compilation, if required.
twisti@3676 1867 switch (compilable) {
twisti@3676 1868 case ciEnv::MethodCompilable_never:
twisti@3676 1869 if (is_osr)
twisti@3676 1870 method->set_not_osr_compilable_quietly();
twisti@3676 1871 else
kvn@1208 1872 method->set_not_compilable_quietly();
twisti@3676 1873 break;
twisti@3676 1874 case ciEnv::MethodCompilable_not_at_tier:
twisti@3676 1875 if (is_osr)
morris@4336 1876 method->set_not_osr_compilable_quietly(task_level);
twisti@3676 1877 else
morris@4336 1878 method->set_not_compilable_quietly(task_level);
twisti@3676 1879 break;
duke@0 1880 }
duke@0 1881
duke@0 1882 // Note that the queued_for_compilation bits are cleared without
duke@0 1883 // protection of a mutex. [They were set by the requester thread,
duke@0 1884 // when adding the task to the complie queue -- at which time the
duke@0 1885 // compile queue lock was held. Subsequently, we acquired the compile
duke@0 1886 // queue lock to get this task off the compile queue; thus (to belabour
duke@0 1887 // the point somewhat) our clearing of the bits must be occurring
duke@0 1888 // only after the setting of the bits. See also 14012000 above.
duke@0 1889 method->clear_queued_for_compilation();
duke@0 1890
duke@0 1891 #ifdef ASSERT
duke@0 1892 if (CollectedHeap::fired_fake_oom()) {
duke@0 1893 // The current compile received a fake OOM during compilation so
duke@0 1894 // go ahead and exit the VM since the test apparently succeeded
duke@0 1895 tty->print_cr("*** Shutting down VM after successful fake OOM");
duke@0 1896 vm_exit(0);
duke@0 1897 }
duke@0 1898 #endif
duke@0 1899 }
duke@0 1900
duke@0 1901 // ------------------------------------------------------------------
kvn@1202 1902 // CompileBroker::handle_full_code_cache
kvn@1202 1903 //
kvn@1202 1904 // The CodeCache is full. Print out warning and disable compilation or
kvn@1202 1905 // try code cache cleaning so compilation can continue later.
kvn@1202 1906 void CompileBroker::handle_full_code_cache() {
kvn@1202 1907 UseInterpreter = true;
kvn@1202 1908 if (UseCompiler || AlwaysCompileLoopMethods ) {
never@1648 1909 if (xtty != NULL) {
vladidan@4003 1910 ResourceMark rm;
iveresov@2329 1911 stringStream s;
iveresov@2329 1912 // Dump code cache state into a buffer before locking the tty,
iveresov@2329 1913 // because log_state() will use locks causing lock conflicts.
iveresov@2329 1914 CodeCache::log_state(&s);
iveresov@2329 1915 // Lock to prevent tearing
iveresov@2329 1916 ttyLocker ttyl;
never@1648 1917 xtty->begin_elem("code_cache_full");
iveresov@2329 1918 xtty->print(s.as_string());
never@1648 1919 xtty->stamp();
never@1648 1920 xtty->end_elem();
kvn@1202 1921 }
never@1498 1922 warning("CodeCache is full. Compiler has been disabled.");
never@1498 1923 warning("Try increasing the code cache size using -XX:ReservedCodeCacheSize=");
never@1498 1924 #ifndef PRODUCT
kvn@1202 1925 if (CompileTheWorld || ExitOnFullCodeCache) {
vladidan@4003 1926 codecache_print(/* detailed= */ true);
kvn@1202 1927 before_exit(JavaThread::current());
kvn@1202 1928 exit_globals(); // will delete tty
kvn@1202 1929 vm_direct_exit(CompileTheWorld ? 0 : 1);
kvn@1202 1930 }
never@1498 1931 #endif
kvn@1202 1932 if (UseCodeCacheFlushing) {
kvn@1202 1933 NMethodSweeper::handle_full_code_cache(true);
kvn@1202 1934 } else {
kvn@1202 1935 UseCompiler = false;
kvn@1202 1936 AlwaysCompileLoopMethods = false;
kvn@1202 1937 }
kvn@1202 1938 }
vladidan@4003 1939 codecache_print(/* detailed= */ true);
kvn@1202 1940 }
kvn@1202 1941
kvn@1202 1942 // ------------------------------------------------------------------
duke@0 1943 // CompileBroker::set_last_compile
duke@0 1944 //
duke@0 1945 // Record this compilation for debugging purposes.
duke@0 1946 void CompileBroker::set_last_compile(CompilerThread* thread, methodHandle method, bool is_osr, int comp_level) {
duke@0 1947 ResourceMark rm;
duke@0 1948 char* method_name = method->name()->as_C_string();
duke@0 1949 strncpy(_last_method_compiled, method_name, CompileBroker::name_buffer_length);
duke@0 1950 char current_method[CompilerCounters::cmname_buffer_length];
duke@0 1951 size_t maxLen = CompilerCounters::cmname_buffer_length;
duke@0 1952
duke@0 1953 if (UsePerfData) {
coleenp@3602 1954 const char* class_name = method->method_holder()->name()->as_C_string();
duke@0 1955
duke@0 1956 size_t s1len = strlen(class_name);
duke@0 1957 size_t s2len = strlen(method_name);
duke@0 1958
duke@0 1959 // check if we need to truncate the string
duke@0 1960 if (s1len + s2len + 2 > maxLen) {
duke@0 1961
duke@0 1962 // the strategy is to lop off the leading characters of the
duke@0 1963 // class name and the trailing characters of the method name.
duke@0 1964
duke@0 1965 if (s2len + 2 > maxLen) {
duke@0 1966 // lop of the entire class name string, let snprintf handle
duke@0 1967 // truncation of the method name.
duke@0 1968 class_name += s1len; // null string
duke@0 1969 }
duke@0 1970 else {
duke@0 1971 // lop off the extra characters from the front of the class name
duke@0 1972 class_name += ((s1len + s2len + 2) - maxLen);
duke@0 1973 }
duke@0 1974 }
duke@0 1975
duke@0 1976 jio_snprintf(current_method, maxLen, "%s %s", class_name, method_name);
duke@0 1977 }
duke@0 1978
duke@0 1979 if (CICountOSR && is_osr) {
duke@0 1980 _last_compile_type = osr_compile;
duke@0 1981 } else {
duke@0 1982 _last_compile_type = normal_compile;
duke@0 1983 }
duke@0 1984 _last_compile_level = comp_level;
duke@0 1985
duke@0 1986 if (UsePerfData) {
duke@0 1987 CompilerCounters* counters = thread->counters();
duke@0 1988 counters->set_current_method(current_method);
duke@0 1989 counters->set_compile_type((jlong)_last_compile_type);
duke@0 1990 }
duke@0 1991 }
duke@0 1992
duke@0 1993
duke@0 1994 // ------------------------------------------------------------------
duke@0 1995 // CompileBroker::push_jni_handle_block
duke@0 1996 //
duke@0 1997 // Push on a new block of JNI handles.
duke@0 1998 void CompileBroker::push_jni_handle_block() {
duke@0 1999 JavaThread* thread = JavaThread::current();
duke@0 2000
duke@0 2001 // Allocate a new block for JNI handles.
duke@0 2002 // Inlined code from jni_PushLocalFrame()
duke@0 2003 JNIHandleBlock* java_handles = thread->active_handles();
duke@0 2004 JNIHandleBlock* compile_handles = JNIHandleBlock::allocate_block(thread);
duke@0 2005 assert(compile_handles != NULL && java_handles != NULL, "should not be NULL");
duke@0 2006 compile_handles->set_pop_frame_link(java_handles); // make sure java handles get gc'd.
duke@0 2007 thread->set_active_handles(compile_handles);
duke@0 2008 }
duke@0 2009
duke@0 2010
duke@0 2011 // ------------------------------------------------------------------
duke@0 2012 // CompileBroker::pop_jni_handle_block
duke@0 2013 //
duke@0 2014 // Pop off the current block of JNI handles.
duke@0 2015 void CompileBroker::pop_jni_handle_block() {
duke@0 2016 JavaThread* thread = JavaThread::current();
duke@0 2017
duke@0 2018 // Release our JNI handle block
duke@0 2019 JNIHandleBlock* compile_handles = thread->active_handles();
duke@0 2020 JNIHandleBlock* java_handles = compile_handles->pop_frame_link();
duke@0 2021 thread->set_active_handles(java_handles);
duke@0 2022 compile_handles->set_pop_frame_link(NULL);
duke@0 2023 JNIHandleBlock::release_block(compile_handles, thread); // may block
duke@0 2024 }
duke@0 2025
duke@0 2026
duke@0 2027 // ------------------------------------------------------------------
duke@0 2028 // CompileBroker::check_break_at
duke@0 2029 //
duke@0 2030 // Should the compilation break at the current compilation.
duke@0 2031 bool CompileBroker::check_break_at(methodHandle method, int compile_id, bool is_osr) {
duke@0 2032 if (CICountOSR && is_osr && (compile_id == CIBreakAtOSR)) {
duke@0 2033 return true;
duke@0 2034 } else if( CompilerOracle::should_break_at(method) ) { // break when compiling
duke@0 2035 return true;
duke@0 2036 } else {
duke@0 2037 return (compile_id == CIBreakAt);
duke@0 2038 }
duke@0 2039 }
duke@0 2040
duke@0 2041 // ------------------------------------------------------------------
duke@0 2042 // CompileBroker::collect_statistics
duke@0 2043 //
duke@0 2044 // Collect statistics about the compilation.
duke@0 2045
duke@0 2046 void CompileBroker::collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task) {
duke@0 2047 bool success = task->is_success();
coleenp@3602 2048 methodHandle method (thread, task->method());
duke@0 2049 uint compile_id = task->compile_id();
duke@0 2050 bool is_osr = (task->osr_bci() != standard_entry_bci);
duke@0 2051 nmethod* code = task->code();
duke@0 2052 CompilerCounters* counters = thread->counters();
duke@0 2053
duke@0 2054 assert(code == NULL || code->is_locked_by_vm(), "will survive the MutexLocker");
duke@0 2055 MutexLocker locker(CompileStatistics_lock);
duke@0 2056
duke@0 2057 // _perf variables are production performance counters which are
duke@0 2058 // updated regardless of the setting of the CITime and CITimeEach flags
duke@0 2059 //
duke@0 2060 if (!success) {
duke@0 2061 _total_bailout_count++;
duke@0 2062 if (UsePerfData) {
duke@0 2063 _perf_last_failed_method->set_value(counters->current_method());
duke@0 2064 _perf_last_failed_type->set_value(counters->compile_type());
duke@0 2065 _perf_total_bailout_count->inc();
duke@0 2066 }
duke@0 2067 } else if (code == NULL) {
duke@0 2068 if (UsePerfData) {
duke@0 2069 _perf_last_invalidated_method->set_value(counters->current_method());
duke@0 2070 _perf_last_invalidated_type->set_value(counters->compile_type());
duke@0 2071 _perf_total_invalidated_count->inc();
duke@0 2072 }
duke@0 2073 _total_invalidated_count++;
duke@0 2074 } else {
duke@0 2075 // Compilation succeeded
duke@0 2076
duke@0 2077 // update compilation ticks - used by the implementation of
duke@0 2078 // java.lang.management.CompilationMBean
duke@0 2079 _perf_total_compilation->inc(time.ticks());
duke@0 2080
duke@0 2081 if (CITime) {
duke@0 2082 _t_total_compilation.add(time);
duke@0 2083 if (is_osr) {
duke@0 2084 _t_osr_compilation.add(time);
duke@0 2085 _sum_osr_bytes_compiled += method->code_size() + task->num_inlined_bytecodes();
duke@0 2086 } else {
duke@0 2087 _t_standard_compilation.add(time);
duke@0 2088 _sum_standard_bytes_compiled += method->code_size() + task->num_inlined_bytecodes();
duke@0 2089 }
duke@0 2090 }
duke@0 2091
duke@0 2092 if (UsePerfData) {
duke@0 2093 // save the name of the last method compiled
duke@0 2094 _perf_last_method->set_value(counters->current_method());
duke@0 2095 _perf_last_compile_type->set_value(counters->compile_type());
duke@0 2096 _perf_last_compile_size->set_value(method->code_size() +
duke@0 2097 task->num_inlined_bytecodes());
duke@0 2098 if (is_osr) {
duke@0 2099 _perf_osr_compilation->inc(time.ticks());
duke@0 2100 _perf_sum_osr_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes());
duke@0 2101 } else {
duke@0 2102 _perf_standard_compilation->inc(time.ticks());
duke@0 2103 _perf_sum_standard_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes());
duke@0 2104 }
duke@0 2105 }
duke@0 2106
duke@0 2107 if (CITimeEach) {
duke@0 2108 float bytes_per_sec = 1.0 * (method->code_size() + task->num_inlined_bytecodes()) / time.seconds();
duke@0 2109 tty->print_cr("%3d seconds: %f bytes/sec : %f (bytes %d + %d inlined)",
duke@0 2110 compile_id, time.seconds(), bytes_per_sec, method->code_size(), task->num_inlined_bytecodes());
duke@0 2111 }
duke@0 2112
duke@0 2113 // Collect counts of successful compilations
twisti@1668 2114 _sum_nmethod_size += code->total_size();
twisti@1668 2115 _sum_nmethod_code_size += code->insts_size();
duke@0 2116 _total_compile_count++;
duke@0 2117
duke@0 2118 if (UsePerfData) {
twisti@1668 2119 _perf_sum_nmethod_size->inc( code->total_size());
twisti@1668 2120 _perf_sum_nmethod_code_size->inc(code->insts_size());
duke@0 2121 _perf_total_compile_count->inc();
duke@0 2122 }
duke@0 2123
duke@0 2124 if (is_osr) {
duke@0 2125 if (UsePerfData) _perf_total_osr_compile_count->inc();
duke@0 2126 _total_osr_compile_count++;
duke@0 2127 } else {
duke@0 2128 if (UsePerfData) _perf_total_standard_compile_count->inc();
duke@0 2129 _total_standard_compile_count++;
duke@0 2130 }
duke@0 2131 }
duke@0 2132 // set the current method for the thread to null
duke@0 2133 if (UsePerfData) counters->set_current_method("");
duke@0 2134 }
duke@0 2135
morris@4336 2136 const char* CompileBroker::compiler_name(int comp_level) {
morris@4336 2137 AbstractCompiler *comp = CompileBroker::compiler(comp_level);
morris@4336 2138 if (comp == NULL) {
morris@4336 2139 return "no compiler";
morris@4336 2140 } else {
morris@4336 2141 return (comp->name());
morris@4336 2142 }
morris@4336 2143 }
duke@0 2144
duke@0 2145 void CompileBroker::print_times() {
duke@0 2146 tty->cr();
duke@0 2147 tty->print_cr("Accumulated compiler times (for compiled methods only)");
duke@0 2148 tty->print_cr("------------------------------------------------");
duke@0 2149 //0000000000111111111122222222223333333333444444444455555555556666666666
duke@0 2150 //0123456789012345678901234567890123456789012345678901234567890123456789
duke@0 2151 tty->print_cr(" Total compilation time : %6.3f s", CompileBroker::_t_total_compilation.seconds());
duke@0 2152 tty->print_cr(" Standard compilation : %6.3f s, Average : %2.3f",
duke@0 2153 CompileBroker::_t_standard_compilation.seconds(),
duke@0 2154 CompileBroker::_t_standard_compilation.seconds() / CompileBroker::_total_standard_compile_count);
duke@0 2155 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);
twisti@1131 2156
morris@4336 2157 AbstractCompiler *comp = compiler(CompLevel_simple);
morris@4336 2158 if (comp != NULL) {
morris@4336 2159 comp->print_timers();
duke@0 2160 }
morris@4336 2161 comp = compiler(CompLevel_full_optimization);
morris@4336 2162 if (comp != NULL) {
morris@4336 2163 comp->print_timers();
iveresov@1703 2164 }
duke@0 2165 tty->cr();
roland@4425 2166 tty->print_cr(" Total compiled methods : %6d methods", CompileBroker::_total_compile_count);
roland@4425 2167 tty->print_cr(" Standard compilation : %6d methods", CompileBroker::_total_standard_compile_count);
roland@4425 2168 tty->print_cr(" On stack replacement : %6d methods", CompileBroker::_total_osr_compile_count);
duke@0 2169 int tcb = CompileBroker::_sum_osr_bytes_compiled + CompileBroker::_sum_standard_bytes_compiled;
duke@0 2170 tty->print_cr(" Total compiled bytecodes : %6d bytes", tcb);
duke@0 2171 tty->print_cr(" Standard compilation : %6d bytes", CompileBroker::_sum_standard_bytes_compiled);
duke@0 2172 tty->print_cr(" On stack replacement : %6d bytes", CompileBroker::_sum_osr_bytes_compiled);
duke@0 2173 int bps = (int)(tcb / CompileBroker::_t_total_compilation.seconds());
duke@0 2174 tty->print_cr(" Average compilation speed: %6d bytes/s", bps);
duke@0 2175 tty->cr();
duke@0 2176 tty->print_cr(" nmethod code size : %6d bytes", CompileBroker::_sum_nmethod_code_size);
duke@0 2177 tty->print_cr(" nmethod total size : %6d bytes", CompileBroker::_sum_nmethod_size);
duke@0 2178 }
duke@0 2179
duke@0 2180
duke@0 2181 // Debugging output for failure
duke@0 2182 void CompileBroker::print_last_compile() {
duke@0 2183 if ( _last_compile_level != CompLevel_none &&
duke@0 2184 compiler(_last_compile_level) != NULL &&
duke@0 2185 _last_method_compiled != NULL &&
duke@0 2186 _last_compile_type != no_compile) {
duke@0 2187 if (_last_compile_type == osr_compile) {
duke@0 2188 tty->print_cr("Last parse: [osr]%d+++(%d) %s",
duke@0 2189 _osr_compilation_id, _last_compile_level, _last_method_compiled);
duke@0 2190 } else {
duke@0 2191 tty->print_cr("Last parse: %d+++(%d) %s",
duke@0 2192 _compilation_id, _last_compile_level, _last_method_compiled);
duke@0 2193 }
duke@0 2194 }
duke@0 2195 }
duke@0 2196
duke@0 2197
duke@0 2198 void CompileBroker::print_compiler_threads_on(outputStream* st) {
duke@0 2199 #ifndef PRODUCT
duke@0 2200 st->print_cr("Compiler thread printing unimplemented.");
duke@0 2201 st->cr();
duke@0 2202 #endif
duke@0 2203 }
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