Mercurial > hg > graal-compiler
annotate src/share/vm/compiler/compileBroker.cpp @ 12880:469216acdb28
8023014: CodeSweeperSweepNoFlushTest.java fails with HS crash
Summary: Ensure ensure correct initialization of compiler runtime
Reviewed-by: kvn, twisti
| author | anoll |
|---|---|
| date | Thu, 10 Oct 2013 15:44:12 +0200 |
| parents | 1e814e391ee8 |
| children | 8b4bbba322d3 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 10405 | 2 * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/systemDictionary.hpp" | |
| 27 #include "classfile/vmSymbols.hpp" | |
| 28 #include "code/codeCache.hpp" | |
| 29 #include "compiler/compileBroker.hpp" | |
| 30 #include "compiler/compileLog.hpp" | |
| 31 #include "compiler/compilerOracle.hpp" | |
| 32 #include "interpreter/linkResolver.hpp" | |
| 33 #include "memory/allocation.inline.hpp" | |
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34 #include "oops/methodData.hpp" |
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35 #include "oops/method.hpp" |
| 1972 | 36 #include "oops/oop.inline.hpp" |
| 37 #include "prims/nativeLookup.hpp" | |
| 38 #include "runtime/arguments.hpp" | |
| 39 #include "runtime/compilationPolicy.hpp" | |
| 40 #include "runtime/init.hpp" | |
| 41 #include "runtime/interfaceSupport.hpp" | |
| 42 #include "runtime/javaCalls.hpp" | |
| 43 #include "runtime/os.hpp" | |
| 44 #include "runtime/sharedRuntime.hpp" | |
| 45 #include "runtime/sweeper.hpp" | |
| 10405 | 46 #include "trace/tracing.hpp" |
| 1972 | 47 #include "utilities/dtrace.hpp" |
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48 #include "utilities/events.hpp" |
| 1972 | 49 #ifdef COMPILER1 |
| 50 #include "c1/c1_Compiler.hpp" | |
| 51 #endif | |
| 52 #ifdef COMPILER2 | |
| 53 #include "opto/c2compiler.hpp" | |
| 54 #endif | |
| 55 #ifdef SHARK | |
| 56 #include "shark/sharkCompiler.hpp" | |
| 57 #endif | |
| 0 | 58 |
| 59 #ifdef DTRACE_ENABLED | |
| 60 | |
| 61 // Only bother with this argument setup if dtrace is available | |
| 62 | |
| 4006 | 63 #ifndef USDT2 |
| 0 | 64 HS_DTRACE_PROBE_DECL8(hotspot, method__compile__begin, |
| 65 char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t); | |
| 66 HS_DTRACE_PROBE_DECL9(hotspot, method__compile__end, | |
| 67 char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t, bool); | |
| 68 | |
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69 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, comp_name) \ |
| 0 | 70 { \ |
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71 Symbol* klass_name = (method)->klass_name(); \ |
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72 Symbol* name = (method)->name(); \ |
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73 Symbol* signature = (method)->signature(); \ |
| 0 | 74 HS_DTRACE_PROBE8(hotspot, method__compile__begin, \ |
| 75 comp_name, strlen(comp_name), \ | |
| 76 klass_name->bytes(), klass_name->utf8_length(), \ | |
| 77 name->bytes(), name->utf8_length(), \ | |
| 78 signature->bytes(), signature->utf8_length()); \ | |
| 79 } | |
| 80 | |
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81 #define DTRACE_METHOD_COMPILE_END_PROBE(method, comp_name, success) \ |
| 0 | 82 { \ |
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83 Symbol* klass_name = (method)->klass_name(); \ |
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84 Symbol* name = (method)->name(); \ |
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85 Symbol* signature = (method)->signature(); \ |
| 0 | 86 HS_DTRACE_PROBE9(hotspot, method__compile__end, \ |
| 87 comp_name, strlen(comp_name), \ | |
| 88 klass_name->bytes(), klass_name->utf8_length(), \ | |
| 89 name->bytes(), name->utf8_length(), \ | |
| 90 signature->bytes(), signature->utf8_length(), (success)); \ | |
| 91 } | |
| 92 | |
| 4006 | 93 #else /* USDT2 */ |
| 94 | |
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95 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, comp_name) \ |
| 4006 | 96 { \ |
| 97 Symbol* klass_name = (method)->klass_name(); \ | |
| 98 Symbol* name = (method)->name(); \ | |
| 99 Symbol* signature = (method)->signature(); \ | |
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100 HOTSPOT_METHOD_COMPILE_BEGIN( \ |
| 4006 | 101 comp_name, strlen(comp_name), \ |
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102 (char *) klass_name->bytes(), klass_name->utf8_length(), \ |
| 4006 | 103 (char *) name->bytes(), name->utf8_length(), \ |
| 104 (char *) signature->bytes(), signature->utf8_length()); \ | |
| 105 } | |
| 106 | |
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107 #define DTRACE_METHOD_COMPILE_END_PROBE(method, comp_name, success) \ |
| 4006 | 108 { \ |
| 109 Symbol* klass_name = (method)->klass_name(); \ | |
| 110 Symbol* name = (method)->name(); \ | |
| 111 Symbol* signature = (method)->signature(); \ | |
| 112 HOTSPOT_METHOD_COMPILE_END( \ | |
| 113 comp_name, strlen(comp_name), \ | |
| 114 (char *) klass_name->bytes(), klass_name->utf8_length(), \ | |
| 115 (char *) name->bytes(), name->utf8_length(), \ | |
| 116 (char *) signature->bytes(), signature->utf8_length(), (success)); \ | |
| 117 } | |
| 118 #endif /* USDT2 */ | |
| 119 | |
| 0 | 120 #else // ndef DTRACE_ENABLED |
| 121 | |
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122 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, comp_name) |
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123 #define DTRACE_METHOD_COMPILE_END_PROBE(method, comp_name, success) |
| 0 | 124 |
| 125 #endif // ndef DTRACE_ENABLED | |
| 126 | |
| 127 bool CompileBroker::_initialized = false; | |
| 128 volatile bool CompileBroker::_should_block = false; | |
| 1202 | 129 volatile jint CompileBroker::_should_compile_new_jobs = run_compilation; |
| 0 | 130 |
| 131 // The installed compiler(s) | |
| 132 AbstractCompiler* CompileBroker::_compilers[2]; | |
| 133 | |
| 134 // These counters are used for assigning id's to each compilation | |
| 135 uint CompileBroker::_compilation_id = 0; | |
| 136 uint CompileBroker::_osr_compilation_id = 0; | |
| 137 | |
| 138 // Debugging information | |
| 139 int CompileBroker::_last_compile_type = no_compile; | |
| 140 int CompileBroker::_last_compile_level = CompLevel_none; | |
| 141 char CompileBroker::_last_method_compiled[CompileBroker::name_buffer_length]; | |
| 142 | |
| 143 // Performance counters | |
| 144 PerfCounter* CompileBroker::_perf_total_compilation = NULL; | |
| 145 PerfCounter* CompileBroker::_perf_osr_compilation = NULL; | |
| 146 PerfCounter* CompileBroker::_perf_standard_compilation = NULL; | |
| 147 | |
| 148 PerfCounter* CompileBroker::_perf_total_bailout_count = NULL; | |
| 149 PerfCounter* CompileBroker::_perf_total_invalidated_count = NULL; | |
| 150 PerfCounter* CompileBroker::_perf_total_compile_count = NULL; | |
| 151 PerfCounter* CompileBroker::_perf_total_osr_compile_count = NULL; | |
| 152 PerfCounter* CompileBroker::_perf_total_standard_compile_count = NULL; | |
| 153 | |
| 154 PerfCounter* CompileBroker::_perf_sum_osr_bytes_compiled = NULL; | |
| 155 PerfCounter* CompileBroker::_perf_sum_standard_bytes_compiled = NULL; | |
| 156 PerfCounter* CompileBroker::_perf_sum_nmethod_size = NULL; | |
| 157 PerfCounter* CompileBroker::_perf_sum_nmethod_code_size = NULL; | |
| 158 | |
| 159 PerfStringVariable* CompileBroker::_perf_last_method = NULL; | |
| 160 PerfStringVariable* CompileBroker::_perf_last_failed_method = NULL; | |
| 161 PerfStringVariable* CompileBroker::_perf_last_invalidated_method = NULL; | |
| 162 PerfVariable* CompileBroker::_perf_last_compile_type = NULL; | |
| 163 PerfVariable* CompileBroker::_perf_last_compile_size = NULL; | |
| 164 PerfVariable* CompileBroker::_perf_last_failed_type = NULL; | |
| 165 PerfVariable* CompileBroker::_perf_last_invalidated_type = NULL; | |
| 166 | |
| 167 // Timers and counters for generating statistics | |
| 168 elapsedTimer CompileBroker::_t_total_compilation; | |
| 169 elapsedTimer CompileBroker::_t_osr_compilation; | |
| 170 elapsedTimer CompileBroker::_t_standard_compilation; | |
| 171 | |
| 172 int CompileBroker::_total_bailout_count = 0; | |
| 173 int CompileBroker::_total_invalidated_count = 0; | |
| 174 int CompileBroker::_total_compile_count = 0; | |
| 175 int CompileBroker::_total_osr_compile_count = 0; | |
| 176 int CompileBroker::_total_standard_compile_count = 0; | |
| 177 | |
| 178 int CompileBroker::_sum_osr_bytes_compiled = 0; | |
| 179 int CompileBroker::_sum_standard_bytes_compiled = 0; | |
| 180 int CompileBroker::_sum_nmethod_size = 0; | |
| 181 int CompileBroker::_sum_nmethod_code_size = 0; | |
| 182 | |
| 10405 | 183 long CompileBroker::_peak_compilation_time = 0; |
| 184 | |
| 185 CompileQueue* CompileBroker::_c2_method_queue = NULL; | |
| 186 CompileQueue* CompileBroker::_c1_method_queue = NULL; | |
| 187 CompileTask* CompileBroker::_task_free_list = NULL; | |
| 0 | 188 |
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189 GrowableArray<CompilerThread*>* CompileBroker::_compiler_threads = NULL; |
| 0 | 190 |
| 191 | |
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192 class CompilationLog : public StringEventLog { |
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193 public: |
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194 CompilationLog() : StringEventLog("Compilation events") { |
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195 } |
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196 |
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197 void log_compile(JavaThread* thread, CompileTask* task) { |
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198 StringLogMessage lm; |
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199 stringStream sstr = lm.stream(); |
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200 // msg.time_stamp().update_to(tty->time_stamp().ticks()); |
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201 task->print_compilation(&sstr, NULL, true); |
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202 log(thread, "%s", (const char*)lm); |
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203 } |
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204 |
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205 void log_nmethod(JavaThread* thread, nmethod* nm) { |
| 4944 | 206 log(thread, "nmethod %d%s " INTPTR_FORMAT " code ["INTPTR_FORMAT ", " INTPTR_FORMAT "]", |
| 207 nm->compile_id(), nm->is_osr_method() ? "%" : "", | |
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208 nm, nm->code_begin(), nm->code_end()); |
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209 } |
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210 |
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211 void log_failure(JavaThread* thread, CompileTask* task, const char* reason, const char* retry_message) { |
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212 StringLogMessage lm; |
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213 lm.print("%4d COMPILE SKIPPED: %s", task->compile_id(), reason); |
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214 if (retry_message != NULL) { |
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215 lm.append(" (%s)", retry_message); |
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216 } |
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217 lm.print("\n"); |
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218 log(thread, "%s", (const char*)lm); |
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219 } |
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220 }; |
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221 |
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222 static CompilationLog* _compilation_log = NULL; |
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223 |
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224 void compileBroker_init() { |
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225 if (LogEvents) { |
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226 _compilation_log = new CompilationLog(); |
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227 } |
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228 } |
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229 |
| 0 | 230 CompileTaskWrapper::CompileTaskWrapper(CompileTask* task) { |
| 231 CompilerThread* thread = CompilerThread::current(); | |
| 232 thread->set_task(task); | |
| 233 CompileLog* log = thread->log(); | |
| 234 if (log != NULL) task->log_task_start(log); | |
| 235 } | |
| 236 | |
| 237 CompileTaskWrapper::~CompileTaskWrapper() { | |
| 238 CompilerThread* thread = CompilerThread::current(); | |
| 239 CompileTask* task = thread->task(); | |
| 240 CompileLog* log = thread->log(); | |
| 241 if (log != NULL) task->log_task_done(log); | |
| 242 thread->set_task(NULL); | |
| 243 task->set_code_handle(NULL); | |
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244 thread->set_env(NULL); |
| 0 | 245 if (task->is_blocking()) { |
| 246 MutexLocker notifier(task->lock(), thread); | |
| 247 task->mark_complete(); | |
| 248 // Notify the waiting thread that the compilation has completed. | |
| 249 task->lock()->notify_all(); | |
| 250 } else { | |
| 251 task->mark_complete(); | |
| 252 | |
| 253 // By convention, the compiling thread is responsible for | |
| 254 // recycling a non-blocking CompileTask. | |
| 255 CompileBroker::free_task(task); | |
| 256 } | |
| 257 } | |
| 258 | |
| 259 | |
| 260 // ------------------------------------------------------------------ | |
| 261 // CompileTask::initialize | |
| 262 void CompileTask::initialize(int compile_id, | |
| 263 methodHandle method, | |
| 264 int osr_bci, | |
| 265 int comp_level, | |
| 266 methodHandle hot_method, | |
| 267 int hot_count, | |
| 268 const char* comment, | |
| 269 bool is_blocking) { | |
| 270 assert(!_lock->is_locked(), "bad locking"); | |
| 271 | |
| 272 _compile_id = compile_id; | |
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273 _method = method(); |
| 7409 | 274 _method_holder = JNIHandles::make_global(method->method_holder()->klass_holder()); |
| 0 | 275 _osr_bci = osr_bci; |
| 276 _is_blocking = is_blocking; | |
| 277 _comp_level = comp_level; | |
| 278 _num_inlined_bytecodes = 0; | |
| 279 | |
| 280 _is_complete = false; | |
| 281 _is_success = false; | |
| 282 _code_handle = NULL; | |
| 283 | |
| 284 _hot_method = NULL; | |
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285 _hot_method_holder = NULL; |
| 0 | 286 _hot_count = hot_count; |
| 287 _time_queued = 0; // tidy | |
| 288 _comment = comment; | |
| 289 | |
| 290 if (LogCompilation) { | |
| 291 _time_queued = os::elapsed_counter(); | |
| 292 if (hot_method.not_null()) { | |
| 293 if (hot_method == method) { | |
| 294 _hot_method = _method; | |
| 295 } else { | |
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296 _hot_method = hot_method(); |
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297 // only add loader or mirror if different from _method_holder |
| 7409 | 298 _hot_method_holder = JNIHandles::make_global(hot_method->method_holder()->klass_holder()); |
| 0 | 299 } |
| 300 } | |
| 301 } | |
| 302 | |
| 303 _next = NULL; | |
| 304 } | |
| 305 | |
| 306 // ------------------------------------------------------------------ | |
| 307 // CompileTask::code/set_code | |
| 308 nmethod* CompileTask::code() const { | |
| 309 if (_code_handle == NULL) return NULL; | |
| 310 return _code_handle->code(); | |
| 311 } | |
| 312 void CompileTask::set_code(nmethod* nm) { | |
| 313 if (_code_handle == NULL && nm == NULL) return; | |
| 314 guarantee(_code_handle != NULL, ""); | |
| 315 _code_handle->set_code(nm); | |
| 316 if (nm == NULL) _code_handle = NULL; // drop the handle also | |
| 317 } | |
| 318 | |
| 319 // ------------------------------------------------------------------ | |
| 320 // CompileTask::free | |
| 321 void CompileTask::free() { | |
| 322 set_code(NULL); | |
| 323 assert(!_lock->is_locked(), "Should not be locked when freed"); | |
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324 JNIHandles::destroy_global(_method_holder); |
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325 JNIHandles::destroy_global(_hot_method_holder); |
| 0 | 326 } |
| 327 | |
| 328 | |
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329 void CompileTask::mark_on_stack() { |
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330 // Mark these methods as something redefine classes cannot remove. |
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331 _method->set_on_stack(true); |
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332 if (_hot_method != NULL) { |
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333 _hot_method->set_on_stack(true); |
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334 } |
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335 } |
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336 |
| 0 | 337 // ------------------------------------------------------------------ |
| 338 // CompileTask::print | |
| 339 void CompileTask::print() { | |
| 340 tty->print("<CompileTask compile_id=%d ", _compile_id); | |
| 341 tty->print("method="); | |
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342 _method->print_name(tty); |
| 0 | 343 tty->print_cr(" osr_bci=%d is_blocking=%s is_complete=%s is_success=%s>", |
| 344 _osr_bci, bool_to_str(_is_blocking), | |
| 345 bool_to_str(_is_complete), bool_to_str(_is_success)); | |
| 346 } | |
| 347 | |
| 1783 | 348 |
| 0 | 349 // ------------------------------------------------------------------ |
| 350 // CompileTask::print_line_on_error | |
| 351 // | |
| 352 // This function is called by fatal error handler when the thread | |
| 353 // causing troubles is a compiler thread. | |
| 354 // | |
| 355 // Do not grab any lock, do not allocate memory. | |
| 356 // | |
| 357 // Otherwise it's the same as CompileTask::print_line() | |
| 358 // | |
| 359 void CompileTask::print_line_on_error(outputStream* st, char* buf, int buflen) { | |
| 360 // print compiler name | |
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361 st->print("%s:", CompileBroker::compiler_name(comp_level())); |
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362 print_compilation(st); |
| 0 | 363 } |
| 364 | |
| 365 // ------------------------------------------------------------------ | |
| 366 // CompileTask::print_line | |
| 367 void CompileTask::print_line() { | |
| 368 ttyLocker ttyl; // keep the following output all in one block | |
| 369 // print compiler name if requested | |
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370 if (CIPrintCompilerName) tty->print("%s:", CompileBroker::compiler_name(comp_level())); |
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371 print_compilation(); |
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372 } |
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373 |
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374 |
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375 // ------------------------------------------------------------------ |
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376 // CompileTask::print_compilation_impl |
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377 void CompileTask::print_compilation_impl(outputStream* st, Method* method, int compile_id, int comp_level, |
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378 bool is_osr_method, int osr_bci, bool is_blocking, |
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379 const char* msg, bool short_form) { |
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380 if (!short_form) { |
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381 st->print("%7d ", (int) st->time_stamp().milliseconds()); // print timestamp |
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382 } |
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383 st->print("%4d ", compile_id); // print compilation number |
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384 |
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385 // For unloaded methods the transition to zombie occurs after the |
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386 // method is cleared so it's impossible to report accurate |
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387 // information for that case. |
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388 bool is_synchronized = false; |
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389 bool has_exception_handler = false; |
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390 bool is_native = false; |
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391 if (method != NULL) { |
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392 is_synchronized = method->is_synchronized(); |
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393 has_exception_handler = method->has_exception_handler(); |
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394 is_native = method->is_native(); |
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395 } |
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396 // method attributes |
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397 const char compile_type = is_osr_method ? '%' : ' '; |
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398 const char sync_char = is_synchronized ? 's' : ' '; |
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399 const char exception_char = has_exception_handler ? '!' : ' '; |
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400 const char blocking_char = is_blocking ? 'b' : ' '; |
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401 const char native_char = is_native ? 'n' : ' '; |
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402 |
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403 // print method attributes |
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404 st->print("%c%c%c%c%c ", compile_type, sync_char, exception_char, blocking_char, native_char); |
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405 |
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406 if (TieredCompilation) { |
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407 if (comp_level != -1) st->print("%d ", comp_level); |
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408 else st->print("- "); |
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409 } |
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410 st->print(" "); // more indent |
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411 |
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412 if (method == NULL) { |
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413 st->print("(method)"); |
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414 } else { |
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415 method->print_short_name(st); |
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416 if (is_osr_method) { |
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417 st->print(" @ %d", osr_bci); |
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418 } |
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419 if (method->is_native()) |
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420 st->print(" (native)"); |
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421 else |
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422 st->print(" (%d bytes)", method->code_size()); |
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423 } |
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424 |
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425 if (msg != NULL) { |
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426 st->print(" %s", msg); |
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427 } |
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428 if (!short_form) { |
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429 st->cr(); |
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430 } |
| 0 | 431 } |
| 432 | |
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433 // ------------------------------------------------------------------ |
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434 // CompileTask::print_inlining |
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435 void CompileTask::print_inlining(outputStream* st, ciMethod* method, int inline_level, int bci, const char* msg) { |
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436 // 1234567 |
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437 st->print(" "); // print timestamp |
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438 // 1234 |
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439 st->print(" "); // print compilation number |
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440 |
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441 // method attributes |
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442 if (method->is_loaded()) { |
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443 const char sync_char = method->is_synchronized() ? 's' : ' '; |
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444 const char exception_char = method->has_exception_handlers() ? '!' : ' '; |
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445 const char monitors_char = method->has_monitor_bytecodes() ? 'm' : ' '; |
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446 |
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447 // print method attributes |
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448 st->print(" %c%c%c ", sync_char, exception_char, monitors_char); |
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449 } else { |
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450 // %s!bn |
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451 st->print(" "); // print method attributes |
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452 } |
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453 |
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454 if (TieredCompilation) { |
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455 st->print(" "); |
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456 } |
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457 st->print(" "); // more indent |
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458 st->print(" "); // initial inlining indent |
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459 |
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460 for (int i = 0; i < inline_level; i++) st->print(" "); |
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461 |
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462 st->print("@ %d ", bci); // print bci |
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463 method->print_short_name(st); |
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464 if (method->is_loaded()) |
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465 st->print(" (%d bytes)", method->code_size()); |
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466 else |
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467 st->print(" (not loaded)"); |
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468 |
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469 if (msg != NULL) { |
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470 st->print(" %s", msg); |
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471 } |
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472 st->cr(); |
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473 } |
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474 |
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475 // ------------------------------------------------------------------ |
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476 // CompileTask::print_inline_indent |
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477 void CompileTask::print_inline_indent(int inline_level, outputStream* st) { |
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478 // 1234567 |
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479 st->print(" "); // print timestamp |
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480 // 1234 |
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481 st->print(" "); // print compilation number |
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482 // %s!bn |
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483 st->print(" "); // print method attributes |
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484 if (TieredCompilation) { |
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485 st->print(" "); |
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486 } |
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487 st->print(" "); // more indent |
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488 st->print(" "); // initial inlining indent |
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489 for (int i = 0; i < inline_level; i++) st->print(" "); |
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490 } |
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491 |
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492 // ------------------------------------------------------------------ |
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493 // CompileTask::print_compilation |
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494 void CompileTask::print_compilation(outputStream* st, const char* msg, bool short_form) { |
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495 bool is_osr_method = osr_bci() != InvocationEntryBci; |
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496 print_compilation_impl(st, method(), compile_id(), comp_level(), is_osr_method, osr_bci(), is_blocking(), msg, short_form); |
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497 } |
| 0 | 498 |
| 499 // ------------------------------------------------------------------ | |
| 500 // CompileTask::log_task | |
| 501 void CompileTask::log_task(xmlStream* log) { | |
| 502 Thread* thread = Thread::current(); | |
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503 methodHandle method(thread, this->method()); |
| 0 | 504 ResourceMark rm(thread); |
| 505 | |
| 506 // <task id='9' method='M' osr_bci='X' level='1' blocking='1' stamp='1.234'> | |
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507 log->print(" compile_id='%d'", _compile_id); |
| 0 | 508 if (_osr_bci != CompileBroker::standard_entry_bci) { |
| 509 log->print(" compile_kind='osr'"); // same as nmethod::compile_kind | |
| 510 } // else compile_kind='c2c' | |
| 511 if (!method.is_null()) log->method(method); | |
| 512 if (_osr_bci != CompileBroker::standard_entry_bci) { | |
| 513 log->print(" osr_bci='%d'", _osr_bci); | |
| 514 } | |
| 515 if (_comp_level != CompLevel_highest_tier) { | |
| 516 log->print(" level='%d'", _comp_level); | |
| 517 } | |
| 518 if (_is_blocking) { | |
| 519 log->print(" blocking='1'"); | |
| 520 } | |
| 521 log->stamp(); | |
| 522 } | |
| 523 | |
| 524 | |
| 525 // ------------------------------------------------------------------ | |
| 526 // CompileTask::log_task_queued | |
| 527 void CompileTask::log_task_queued() { | |
| 528 Thread* thread = Thread::current(); | |
| 529 ttyLocker ttyl; | |
| 530 ResourceMark rm(thread); | |
| 531 | |
| 532 xtty->begin_elem("task_queued"); | |
| 533 log_task(xtty); | |
| 534 if (_comment != NULL) { | |
| 535 xtty->print(" comment='%s'", _comment); | |
| 536 } | |
| 537 if (_hot_method != NULL) { | |
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538 methodHandle hot(thread, _hot_method); |
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539 methodHandle method(thread, _method); |
| 0 | 540 if (hot() != method()) { |
| 541 xtty->method(hot); | |
| 542 } | |
| 543 } | |
| 544 if (_hot_count != 0) { | |
| 545 xtty->print(" hot_count='%d'", _hot_count); | |
| 546 } | |
| 547 xtty->end_elem(); | |
| 548 } | |
| 549 | |
| 550 | |
| 551 // ------------------------------------------------------------------ | |
| 552 // CompileTask::log_task_start | |
| 553 void CompileTask::log_task_start(CompileLog* log) { | |
| 554 log->begin_head("task"); | |
| 555 log_task(log); | |
| 556 log->end_head(); | |
| 557 } | |
| 558 | |
| 559 | |
| 560 // ------------------------------------------------------------------ | |
| 561 // CompileTask::log_task_done | |
| 562 void CompileTask::log_task_done(CompileLog* log) { | |
| 563 Thread* thread = Thread::current(); | |
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564 methodHandle method(thread, this->method()); |
| 0 | 565 ResourceMark rm(thread); |
| 566 | |
| 567 // <task_done ... stamp='1.234'> </task> | |
| 568 nmethod* nm = code(); | |
| 569 log->begin_elem("task_done success='%d' nmsize='%d' count='%d'", | |
| 1748 | 570 _is_success, nm == NULL ? 0 : nm->content_size(), |
| 0 | 571 method->invocation_count()); |
| 572 int bec = method->backedge_count(); | |
| 573 if (bec != 0) log->print(" backedge_count='%d'", bec); | |
| 574 // Note: "_is_complete" is about to be set, but is not. | |
| 575 if (_num_inlined_bytecodes != 0) { | |
| 576 log->print(" inlined_bytes='%d'", _num_inlined_bytecodes); | |
| 577 } | |
| 578 log->stamp(); | |
| 579 log->end_elem(); | |
| 580 log->tail("task"); | |
| 581 log->clear_identities(); // next task will have different CI | |
| 582 if (log->unflushed_count() > 2000) { | |
| 583 log->flush(); | |
| 584 } | |
| 585 log->mark_file_end(); | |
| 586 } | |
| 587 | |
| 588 | |
| 589 | |
| 590 // Add a CompileTask to a CompileQueue | |
| 591 void CompileQueue::add(CompileTask* task) { | |
| 592 assert(lock()->owned_by_self(), "must own lock"); | |
| 593 | |
| 594 task->set_next(NULL); | |
| 1783 | 595 task->set_prev(NULL); |
| 0 | 596 |
| 597 if (_last == NULL) { | |
| 598 // The compile queue is empty. | |
| 599 assert(_first == NULL, "queue is empty"); | |
| 600 _first = task; | |
| 601 _last = task; | |
| 602 } else { | |
| 603 // Append the task to the queue. | |
| 604 assert(_last->next() == NULL, "not last"); | |
| 605 _last->set_next(task); | |
| 1783 | 606 task->set_prev(_last); |
| 0 | 607 _last = task; |
| 608 } | |
| 1783 | 609 ++_size; |
| 0 | 610 |
| 611 // Mark the method as being in the compile queue. | |
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612 task->method()->set_queued_for_compilation(); |
| 0 | 613 |
| 614 if (CIPrintCompileQueue) { | |
| 615 print(); | |
| 616 } | |
| 617 | |
| 618 if (LogCompilation && xtty != NULL) { | |
| 619 task->log_task_queued(); | |
| 620 } | |
| 621 | |
| 622 // Notify CompilerThreads that a task is available. | |
| 1783 | 623 lock()->notify_all(); |
| 0 | 624 } |
| 625 | |
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626 void CompileQueue::delete_all() { |
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627 assert(lock()->owned_by_self(), "must own lock"); |
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628 if (_first != NULL) { |
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629 for (CompileTask* task = _first; task != NULL; task = task->next()) { |
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630 delete task; |
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631 } |
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632 _first = NULL; |
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633 } |
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634 } |
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635 |
| 0 | 636 // ------------------------------------------------------------------ |
| 637 // CompileQueue::get | |
| 638 // | |
| 639 // Get the next CompileTask from a CompileQueue | |
| 640 CompileTask* CompileQueue::get() { | |
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641 NMethodSweeper::possibly_sweep(); |
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642 |
| 0 | 643 MutexLocker locker(lock()); |
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644 // If _first is NULL we have no more compile jobs. There are two reasons for |
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645 // having no compile jobs: First, we compiled everything we wanted. Second, |
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646 // we ran out of code cache so compilation has been disabled. In the latter |
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647 // case we perform code cache sweeps to free memory such that we can re-enable |
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648 // compilation. |
| 0 | 649 while (_first == NULL) { |
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650 // Exit loop if compilation is disabled forever |
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651 if (CompileBroker::is_compilation_disabled_forever()) { |
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652 return NULL; |
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653 } |
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654 |
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655 if (UseCodeCacheFlushing && !CompileBroker::should_compile_new_jobs()) { |
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656 // Wait a certain amount of time to possibly do another sweep. |
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657 // We must wait until stack scanning has happened so that we can |
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658 // transition a method's state from 'not_entrant' to 'zombie'. |
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659 long wait_time = NmethodSweepCheckInterval * 1000; |
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660 if (FLAG_IS_DEFAULT(NmethodSweepCheckInterval)) { |
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661 // Only one thread at a time can do sweeping. Scale the |
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662 // wait time according to the number of compiler threads. |
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663 // As a result, the next sweep is likely to happen every 100ms |
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664 // with an arbitrary number of threads that do sweeping. |
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665 wait_time = 100 * CICompilerCount; |
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666 } |
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667 bool timeout = lock()->wait(!Mutex::_no_safepoint_check_flag, wait_time); |
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668 if (timeout) { |
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669 MutexUnlocker ul(lock()); |
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670 NMethodSweeper::possibly_sweep(); |
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671 } |
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672 } else { |
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673 // If there are no compilation tasks and we can compile new jobs |
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674 // (i.e., there is enough free space in the code cache) there is |
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675 // no need to invoke the sweeper. As a result, the hotness of methods |
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676 // remains unchanged. This behavior is desired, since we want to keep |
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677 // the stable state, i.e., we do not want to evict methods from the |
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678 // code cache if it is unnecessary. |
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679 // We need a timed wait here, since compiler threads can exit if compilation |
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680 // is disabled forever. We use 5 seconds wait time; the exiting of compiler threads |
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681 // is not critical and we do not want idle compiler threads to wake up too often. |
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682 lock()->wait(!Mutex::_no_safepoint_check_flag, 5*1000); |
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683 } |
| 0 | 684 } |
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685 |
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686 if (CompileBroker::is_compilation_disabled_forever()) { |
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687 return NULL; |
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688 } |
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689 |
| 1783 | 690 CompileTask* task = CompilationPolicy::policy()->select_task(this); |
| 691 remove(task); | |
| 692 return task; | |
| 693 } | |
| 0 | 694 |
| 1783 | 695 void CompileQueue::remove(CompileTask* task) |
| 696 { | |
| 697 assert(lock()->owned_by_self(), "must own lock"); | |
| 698 if (task->prev() != NULL) { | |
| 699 task->prev()->set_next(task->next()); | |
| 700 } else { | |
| 701 // max is the first element | |
| 702 assert(task == _first, "Sanity"); | |
| 703 _first = task->next(); | |
| 0 | 704 } |
| 705 | |
| 1783 | 706 if (task->next() != NULL) { |
| 707 task->next()->set_prev(task->prev()); | |
| 708 } else { | |
| 709 // max is the last element | |
| 710 assert(task == _last, "Sanity"); | |
| 711 _last = task->prev(); | |
| 712 } | |
| 713 --_size; | |
| 0 | 714 } |
| 715 | |
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716 // methods in the compile queue need to be marked as used on the stack |
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717 // so that they don't get reclaimed by Redefine Classes |
|
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718 void CompileQueue::mark_on_stack() { |
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719 CompileTask* task = _first; |
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720 while (task != NULL) { |
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721 task->mark_on_stack(); |
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722 task = task->next(); |
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723 } |
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724 } |
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725 |
| 0 | 726 // ------------------------------------------------------------------ |
| 727 // CompileQueue::print | |
| 728 void CompileQueue::print() { | |
| 729 tty->print_cr("Contents of %s", name()); | |
| 730 tty->print_cr("----------------------"); | |
| 731 CompileTask* task = _first; | |
| 732 while (task != NULL) { | |
| 733 task->print_line(); | |
| 734 task = task->next(); | |
| 735 } | |
| 736 tty->print_cr("----------------------"); | |
| 737 } | |
| 738 | |
| 739 CompilerCounters::CompilerCounters(const char* thread_name, int instance, TRAPS) { | |
| 740 | |
| 741 _current_method[0] = '\0'; | |
| 742 _compile_type = CompileBroker::no_compile; | |
| 743 | |
| 744 if (UsePerfData) { | |
| 745 ResourceMark rm; | |
| 746 | |
| 747 // create the thread instance name space string - don't create an | |
| 748 // instance subspace if instance is -1 - keeps the adapterThread | |
| 749 // counters from having a ".0" namespace. | |
| 750 const char* thread_i = (instance == -1) ? thread_name : | |
| 751 PerfDataManager::name_space(thread_name, instance); | |
| 752 | |
| 753 | |
| 754 char* name = PerfDataManager::counter_name(thread_i, "method"); | |
| 755 _perf_current_method = | |
| 756 PerfDataManager::create_string_variable(SUN_CI, name, | |
| 757 cmname_buffer_length, | |
| 758 _current_method, CHECK); | |
| 759 | |
| 760 name = PerfDataManager::counter_name(thread_i, "type"); | |
| 761 _perf_compile_type = PerfDataManager::create_variable(SUN_CI, name, | |
| 762 PerfData::U_None, | |
| 763 (jlong)_compile_type, | |
| 764 CHECK); | |
| 765 | |
| 766 name = PerfDataManager::counter_name(thread_i, "time"); | |
| 767 _perf_time = PerfDataManager::create_counter(SUN_CI, name, | |
| 768 PerfData::U_Ticks, CHECK); | |
| 769 | |
| 770 name = PerfDataManager::counter_name(thread_i, "compiles"); | |
| 771 _perf_compiles = PerfDataManager::create_counter(SUN_CI, name, | |
| 772 PerfData::U_Events, CHECK); | |
| 773 } | |
| 774 } | |
| 775 | |
| 776 // ------------------------------------------------------------------ | |
| 777 // CompileBroker::compilation_init | |
| 778 // | |
| 779 // Initialize the Compilation object | |
| 780 void CompileBroker::compilation_init() { | |
| 781 _last_method_compiled[0] = '\0'; | |
| 782 | |
| 1970 | 783 #ifndef SHARK |
| 0 | 784 // Set the interface to the current compiler(s). |
| 1783 | 785 int c1_count = CompilationPolicy::policy()->compiler_count(CompLevel_simple); |
| 786 int c2_count = CompilationPolicy::policy()->compiler_count(CompLevel_full_optimization); | |
| 0 | 787 #ifdef COMPILER1 |
| 1783 | 788 if (c1_count > 0) { |
| 789 _compilers[0] = new Compiler(); | |
| 790 } | |
| 0 | 791 #endif // COMPILER1 |
| 792 | |
| 793 #ifdef COMPILER2 | |
| 1783 | 794 if (c2_count > 0) { |
| 795 _compilers[1] = new C2Compiler(); | |
| 796 } | |
| 0 | 797 #endif // COMPILER2 |
| 798 | |
| 1970 | 799 #else // SHARK |
| 800 int c1_count = 0; | |
| 801 int c2_count = 1; | |
| 802 | |
| 803 _compilers[1] = new SharkCompiler(); | |
| 804 #endif // SHARK | |
| 1692 | 805 |
| 0 | 806 // Initialize the CompileTask free list |
| 807 _task_free_list = NULL; | |
| 808 | |
| 809 // Start the CompilerThreads | |
| 1783 | 810 init_compiler_threads(c1_count, c2_count); |
| 0 | 811 // totalTime performance counter is always created as it is required |
| 812 // by the implementation of java.lang.management.CompilationMBean. | |
| 813 { | |
| 814 EXCEPTION_MARK; | |
| 815 _perf_total_compilation = | |
| 816 PerfDataManager::create_counter(JAVA_CI, "totalTime", | |
| 817 PerfData::U_Ticks, CHECK); | |
| 818 } | |
| 819 | |
| 820 | |
| 821 if (UsePerfData) { | |
| 822 | |
| 823 EXCEPTION_MARK; | |
| 824 | |
| 825 // create the jvmstat performance counters | |
| 826 _perf_osr_compilation = | |
| 827 PerfDataManager::create_counter(SUN_CI, "osrTime", | |
| 828 PerfData::U_Ticks, CHECK); | |
| 829 | |
| 830 _perf_standard_compilation = | |
| 831 PerfDataManager::create_counter(SUN_CI, "standardTime", | |
| 832 PerfData::U_Ticks, CHECK); | |
| 833 | |
| 834 _perf_total_bailout_count = | |
| 835 PerfDataManager::create_counter(SUN_CI, "totalBailouts", | |
| 836 PerfData::U_Events, CHECK); | |
| 837 | |
| 838 _perf_total_invalidated_count = | |
| 839 PerfDataManager::create_counter(SUN_CI, "totalInvalidates", | |
| 840 PerfData::U_Events, CHECK); | |
| 841 | |
| 842 _perf_total_compile_count = | |
| 843 PerfDataManager::create_counter(SUN_CI, "totalCompiles", | |
| 844 PerfData::U_Events, CHECK); | |
| 845 _perf_total_osr_compile_count = | |
| 846 PerfDataManager::create_counter(SUN_CI, "osrCompiles", | |
| 847 PerfData::U_Events, CHECK); | |
| 848 | |
| 849 _perf_total_standard_compile_count = | |
| 850 PerfDataManager::create_counter(SUN_CI, "standardCompiles", | |
| 851 PerfData::U_Events, CHECK); | |
| 852 | |
| 853 _perf_sum_osr_bytes_compiled = | |
| 854 PerfDataManager::create_counter(SUN_CI, "osrBytes", | |
| 855 PerfData::U_Bytes, CHECK); | |
| 856 | |
| 857 _perf_sum_standard_bytes_compiled = | |
| 858 PerfDataManager::create_counter(SUN_CI, "standardBytes", | |
| 859 PerfData::U_Bytes, CHECK); | |
| 860 | |
| 861 _perf_sum_nmethod_size = | |
| 862 PerfDataManager::create_counter(SUN_CI, "nmethodSize", | |
| 863 PerfData::U_Bytes, CHECK); | |
| 864 | |
| 865 _perf_sum_nmethod_code_size = | |
| 866 PerfDataManager::create_counter(SUN_CI, "nmethodCodeSize", | |
| 867 PerfData::U_Bytes, CHECK); | |
| 868 | |
| 869 _perf_last_method = | |
| 870 PerfDataManager::create_string_variable(SUN_CI, "lastMethod", | |
| 871 CompilerCounters::cmname_buffer_length, | |
| 872 "", CHECK); | |
| 873 | |
| 874 _perf_last_failed_method = | |
| 875 PerfDataManager::create_string_variable(SUN_CI, "lastFailedMethod", | |
| 876 CompilerCounters::cmname_buffer_length, | |
| 877 "", CHECK); | |
| 878 | |
| 879 _perf_last_invalidated_method = | |
| 880 PerfDataManager::create_string_variable(SUN_CI, "lastInvalidatedMethod", | |
| 881 CompilerCounters::cmname_buffer_length, | |
| 882 "", CHECK); | |
| 883 | |
| 884 _perf_last_compile_type = | |
| 885 PerfDataManager::create_variable(SUN_CI, "lastType", | |
| 886 PerfData::U_None, | |
| 887 (jlong)CompileBroker::no_compile, | |
| 888 CHECK); | |
| 889 | |
| 890 _perf_last_compile_size = | |
| 891 PerfDataManager::create_variable(SUN_CI, "lastSize", | |
| 892 PerfData::U_Bytes, | |
| 893 (jlong)CompileBroker::no_compile, | |
| 894 CHECK); | |
| 895 | |
| 896 | |
| 897 _perf_last_failed_type = | |
| 898 PerfDataManager::create_variable(SUN_CI, "lastFailedType", | |
| 899 PerfData::U_None, | |
| 900 (jlong)CompileBroker::no_compile, | |
| 901 CHECK); | |
| 902 | |
| 903 _perf_last_invalidated_type = | |
| 904 PerfDataManager::create_variable(SUN_CI, "lastInvalidatedType", | |
| 905 PerfData::U_None, | |
| 906 (jlong)CompileBroker::no_compile, | |
| 907 CHECK); | |
| 908 } | |
| 909 | |
| 910 _initialized = true; | |
| 911 } | |
| 912 | |
| 913 | |
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914 CompilerThread* CompileBroker::make_compiler_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, |
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915 AbstractCompiler* comp, TRAPS) { |
| 0 | 916 CompilerThread* compiler_thread = NULL; |
| 917 | |
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918 Klass* k = |
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919 SystemDictionary::resolve_or_fail(vmSymbols::java_lang_Thread(), |
| 0 | 920 true, CHECK_0); |
| 921 instanceKlassHandle klass (THREAD, k); | |
| 922 instanceHandle thread_oop = klass->allocate_instance_handle(CHECK_0); | |
| 923 Handle string = java_lang_String::create_from_str(name, CHECK_0); | |
| 924 | |
| 925 // Initialize thread_oop to put it into the system threadGroup | |
| 926 Handle thread_group (THREAD, Universe::system_thread_group()); | |
| 927 JavaValue result(T_VOID); | |
| 928 JavaCalls::call_special(&result, thread_oop, | |
| 929 klass, | |
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930 vmSymbols::object_initializer_name(), |
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931 vmSymbols::threadgroup_string_void_signature(), |
| 0 | 932 thread_group, |
| 933 string, | |
| 934 CHECK_0); | |
| 935 | |
| 936 { | |
| 937 MutexLocker mu(Threads_lock, THREAD); | |
| 938 compiler_thread = new CompilerThread(queue, counters); | |
| 939 // At this point the new CompilerThread data-races with this startup | |
| 940 // thread (which I believe is the primoridal thread and NOT the VM | |
| 941 // thread). This means Java bytecodes being executed at startup can | |
| 942 // queue compile jobs which will run at whatever default priority the | |
| 943 // newly created CompilerThread runs at. | |
| 944 | |
| 945 | |
| 946 // At this point it may be possible that no osthread was created for the | |
| 947 // JavaThread due to lack of memory. We would have to throw an exception | |
| 948 // in that case. However, since this must work and we do not allow | |
| 949 // exceptions anyway, check and abort if this fails. | |
| 950 | |
| 951 if (compiler_thread == NULL || compiler_thread->osthread() == NULL){ | |
| 952 vm_exit_during_initialization("java.lang.OutOfMemoryError", | |
| 953 "unable to create new native thread"); | |
| 954 } | |
| 955 | |
| 956 java_lang_Thread::set_thread(thread_oop(), compiler_thread); | |
| 957 | |
| 958 // Note that this only sets the JavaThread _priority field, which by | |
| 959 // definition is limited to Java priorities and not OS priorities. | |
| 960 // The os-priority is set in the CompilerThread startup code itself | |
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961 |
| 0 | 962 java_lang_Thread::set_priority(thread_oop(), NearMaxPriority); |
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963 |
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964 // Note that we cannot call os::set_priority because it expects Java |
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965 // priorities and we are *explicitly* using OS priorities so that it's |
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966 // possible to set the compiler thread priority higher than any Java |
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967 // thread. |
| 0 | 968 |
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969 int native_prio = CompilerThreadPriority; |
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970 if (native_prio == -1) { |
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971 if (UseCriticalCompilerThreadPriority) { |
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972 native_prio = os::java_to_os_priority[CriticalPriority]; |
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973 } else { |
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974 native_prio = os::java_to_os_priority[NearMaxPriority]; |
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975 } |
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976 } |
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977 os::set_native_priority(compiler_thread, native_prio); |
| 0 | 978 |
| 979 java_lang_Thread::set_daemon(thread_oop()); | |
| 980 | |
| 981 compiler_thread->set_threadObj(thread_oop()); | |
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982 compiler_thread->set_compiler(comp); |
| 0 | 983 Threads::add(compiler_thread); |
| 984 Thread::start(compiler_thread); | |
| 985 } | |
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986 |
| 0 | 987 // Let go of Threads_lock before yielding |
| 988 os::yield(); // make sure that the compiler thread is started early (especially helpful on SOLARIS) | |
| 989 | |
| 990 return compiler_thread; | |
| 991 } | |
| 992 | |
| 993 | |
| 1783 | 994 void CompileBroker::init_compiler_threads(int c1_compiler_count, int c2_compiler_count) { |
| 0 | 995 EXCEPTION_MARK; |
| 2447 | 996 #if !defined(ZERO) && !defined(SHARK) |
| 1783 | 997 assert(c2_compiler_count > 0 || c1_compiler_count > 0, "No compilers?"); |
| 2447 | 998 #endif // !ZERO && !SHARK |
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999 // Initialize the compilation queue |
| 1783 | 1000 if (c2_compiler_count > 0) { |
| 1001 _c2_method_queue = new CompileQueue("C2MethodQueue", MethodCompileQueue_lock); | |
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1002 _compilers[1]->set_num_compiler_threads(c2_compiler_count); |
| 1783 | 1003 } |
| 1004 if (c1_compiler_count > 0) { | |
| 1005 _c1_method_queue = new CompileQueue("C1MethodQueue", MethodCompileQueue_lock); | |
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1006 _compilers[0]->set_num_compiler_threads(c1_compiler_count); |
| 1783 | 1007 } |
| 0 | 1008 |
| 1783 | 1009 int compiler_count = c1_compiler_count + c2_compiler_count; |
| 1010 | |
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1011 _compiler_threads = |
| 6197 | 1012 new (ResourceObj::C_HEAP, mtCompiler) GrowableArray<CompilerThread*>(compiler_count, true); |
| 0 | 1013 |
| 1014 char name_buffer[256]; | |
| 1783 | 1015 for (int i = 0; i < c2_compiler_count; i++) { |
| 0 | 1016 // Create a name for our thread. |
| 1783 | 1017 sprintf(name_buffer, "C2 CompilerThread%d", i); |
| 0 | 1018 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK); |
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1019 // Shark and C2 |
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1020 CompilerThread* new_thread = make_compiler_thread(name_buffer, _c2_method_queue, counters, _compilers[1], CHECK); |
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1021 _compiler_threads->append(new_thread); |
| 0 | 1022 } |
| 1783 | 1023 |
| 1024 for (int i = c2_compiler_count; i < compiler_count; i++) { | |
| 1025 // Create a name for our thread. | |
| 1026 sprintf(name_buffer, "C1 CompilerThread%d", i); | |
| 1027 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK); | |
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1028 // C1 |
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1029 CompilerThread* new_thread = make_compiler_thread(name_buffer, _c1_method_queue, counters, _compilers[0], CHECK); |
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1030 _compiler_threads->append(new_thread); |
| 1783 | 1031 } |
| 1032 | |
| 0 | 1033 if (UsePerfData) { |
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1034 PerfDataManager::create_constant(SUN_CI, "threads", PerfData::U_Bytes, compiler_count, CHECK); |
| 0 | 1035 } |
| 1036 } | |
| 1037 | |
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1038 |
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1039 // Set the methods on the stack as on_stack so that redefine classes doesn't |
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1040 // reclaim them |
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1041 void CompileBroker::mark_on_stack() { |
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1042 if (_c2_method_queue != NULL) { |
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1043 _c2_method_queue->mark_on_stack(); |
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1044 } |
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1045 if (_c1_method_queue != NULL) { |
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1046 _c1_method_queue->mark_on_stack(); |
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1047 } |
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1048 } |
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1049 |
| 0 | 1050 // ------------------------------------------------------------------ |
| 1051 // CompileBroker::compile_method | |
| 1052 // | |
| 1053 // Request compilation of a method. | |
| 1054 void CompileBroker::compile_method_base(methodHandle method, | |
| 1055 int osr_bci, | |
| 1056 int comp_level, | |
| 1057 methodHandle hot_method, | |
| 1058 int hot_count, | |
| 1059 const char* comment, | |
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1060 Thread* thread) { |
| 0 | 1061 // do nothing if compiler thread(s) is not available |
| 1062 if (!_initialized ) { | |
| 1063 return; | |
| 1064 } | |
| 1065 | |
| 1066 guarantee(!method->is_abstract(), "cannot compile abstract methods"); | |
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1067 assert(method->method_holder()->oop_is_instance(), |
| 0 | 1068 "sanity check"); |
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1069 assert(!method->method_holder()->is_not_initialized(), |
| 0 | 1070 "method holder must be initialized"); |
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1071 assert(!method->is_method_handle_intrinsic(), "do not enqueue these guys"); |
| 0 | 1072 |
| 1073 if (CIPrintRequests) { | |
| 1074 tty->print("request: "); | |
| 1075 method->print_short_name(tty); | |
| 1076 if (osr_bci != InvocationEntryBci) { | |
| 1077 tty->print(" osr_bci: %d", osr_bci); | |
| 1078 } | |
| 1079 tty->print(" comment: %s count: %d", comment, hot_count); | |
| 1080 if (!hot_method.is_null()) { | |
| 1081 tty->print(" hot: "); | |
| 1082 if (hot_method() != method()) { | |
| 1083 hot_method->print_short_name(tty); | |
| 1084 } else { | |
| 1085 tty->print("yes"); | |
| 1086 } | |
| 1087 } | |
| 1088 tty->cr(); | |
| 1089 } | |
| 1090 | |
| 1091 // A request has been made for compilation. Before we do any | |
| 1092 // real work, check to see if the method has been compiled | |
| 1093 // in the meantime with a definitive result. | |
| 1094 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
| 1095 return; | |
| 1096 } | |
| 1097 | |
| 2403 | 1098 #ifndef PRODUCT |
| 1099 if (osr_bci != -1 && !FLAG_IS_DEFAULT(OSROnlyBCI)) { | |
| 1100 if ((OSROnlyBCI > 0) ? (OSROnlyBCI != osr_bci) : (-OSROnlyBCI == osr_bci)) { | |
| 1101 // Positive OSROnlyBCI means only compile that bci. Negative means don't compile that BCI. | |
| 1102 return; | |
| 1103 } | |
| 1104 } | |
| 1105 #endif | |
| 1783 | 1106 |
| 0 | 1107 // If this method is already in the compile queue, then |
| 1108 // we do not block the current thread. | |
| 1109 if (compilation_is_in_queue(method, osr_bci)) { | |
| 1110 // We may want to decay our counter a bit here to prevent | |
| 1111 // multiple denied requests for compilation. This is an | |
| 1112 // open compilation policy issue. Note: The other possibility, | |
| 1113 // in the case that this is a blocking compile request, is to have | |
| 1114 // all subsequent blocking requesters wait for completion of | |
| 1115 // ongoing compiles. Note that in this case we'll need a protocol | |
| 1116 // for freeing the associated compile tasks. [Or we could have | |
| 1117 // a single static monitor on which all these waiters sleep.] | |
| 1118 return; | |
| 1119 } | |
| 1120 | |
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1121 // If the requesting thread is holding the pending list lock |
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1122 // then we just return. We can't risk blocking while holding |
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1123 // the pending list lock or a 3-way deadlock may occur |
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1124 // between the reference handler thread, a GC (instigated |
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1125 // by a compiler thread), and compiled method registration. |
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1126 if (InstanceRefKlass::owns_pending_list_lock(JavaThread::current())) { |
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1127 return; |
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1128 } |
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1129 |
| 0 | 1130 // Outputs from the following MutexLocker block: |
| 1131 CompileTask* task = NULL; | |
| 1132 bool blocking = false; | |
| 1783 | 1133 CompileQueue* queue = compile_queue(comp_level); |
| 0 | 1134 |
| 1135 // Acquire our lock. | |
| 1136 { | |
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1137 MutexLocker locker(queue->lock(), thread); |
| 0 | 1138 |
| 1139 // Make sure the method has not slipped into the queues since | |
| 1140 // last we checked; note that those checks were "fast bail-outs". | |
| 1141 // Here we need to be more careful, see 14012000 below. | |
| 1142 if (compilation_is_in_queue(method, osr_bci)) { | |
| 1143 return; | |
| 1144 } | |
| 1145 | |
| 1146 // We need to check again to see if the compilation has | |
| 1147 // completed. A previous compilation may have registered | |
| 1148 // some result. | |
| 1149 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
| 1150 return; | |
| 1151 } | |
| 1152 | |
| 1153 // We now know that this compilation is not pending, complete, | |
| 1154 // or prohibited. Assign a compile_id to this compilation | |
| 1155 // and check to see if it is in our [Start..Stop) range. | |
| 1156 uint compile_id = assign_compile_id(method, osr_bci); | |
| 1157 if (compile_id == 0) { | |
| 1158 // The compilation falls outside the allowed range. | |
| 1159 return; | |
| 1160 } | |
| 1161 | |
| 1162 // Should this thread wait for completion of the compile? | |
| 1163 blocking = is_compile_blocking(method, osr_bci); | |
| 1164 | |
| 1165 // We will enter the compilation in the queue. | |
| 1166 // 14012000: Note that this sets the queued_for_compile bits in | |
| 1167 // the target method. We can now reason that a method cannot be | |
| 1168 // queued for compilation more than once, as follows: | |
| 1169 // Before a thread queues a task for compilation, it first acquires | |
| 1170 // the compile queue lock, then checks if the method's queued bits | |
| 1171 // are set or it has already been compiled. Thus there can not be two | |
| 1172 // instances of a compilation task for the same method on the | |
| 1173 // compilation queue. Consider now the case where the compilation | |
| 1174 // thread has already removed a task for that method from the queue | |
| 1175 // and is in the midst of compiling it. In this case, the | |
| 1176 // queued_for_compile bits must be set in the method (and these | |
| 1177 // will be visible to the current thread, since the bits were set | |
| 1178 // under protection of the compile queue lock, which we hold now. | |
| 1179 // When the compilation completes, the compiler thread first sets | |
| 1180 // the compilation result and then clears the queued_for_compile | |
| 1181 // bits. Neither of these actions are protected by a barrier (or done | |
| 1182 // under the protection of a lock), so the only guarantee we have | |
| 1183 // (on machines with TSO (Total Store Order)) is that these values | |
| 1184 // will update in that order. As a result, the only combinations of | |
| 1185 // these bits that the current thread will see are, in temporal order: | |
| 1186 // <RESULT, QUEUE> : | |
| 1187 // <0, 1> : in compile queue, but not yet compiled | |
| 1188 // <1, 1> : compiled but queue bit not cleared | |
| 1189 // <1, 0> : compiled and queue bit cleared | |
| 1190 // Because we first check the queue bits then check the result bits, | |
| 1191 // we are assured that we cannot introduce a duplicate task. | |
| 1192 // Note that if we did the tests in the reverse order (i.e. check | |
| 1193 // result then check queued bit), we could get the result bit before | |
| 1194 // the compilation completed, and the queue bit after the compilation | |
| 1195 // completed, and end up introducing a "duplicate" (redundant) task. | |
| 1196 // In that case, the compiler thread should first check if a method | |
| 1197 // has already been compiled before trying to compile it. | |
| 1198 // NOTE: in the event that there are multiple compiler threads and | |
| 1199 // there is de-optimization/recompilation, things will get hairy, | |
| 1200 // and in that case it's best to protect both the testing (here) of | |
| 1201 // these bits, and their updating (here and elsewhere) under a | |
| 1202 // common lock. | |
| 1783 | 1203 task = create_compile_task(queue, |
| 0 | 1204 compile_id, method, |
| 1205 osr_bci, comp_level, | |
| 1206 hot_method, hot_count, comment, | |
| 1207 blocking); | |
| 1208 } | |
| 1209 | |
| 1210 if (blocking) { | |
| 1211 wait_for_completion(task); | |
| 1212 } | |
| 1213 } | |
| 1214 | |
| 1215 | |
| 1216 nmethod* CompileBroker::compile_method(methodHandle method, int osr_bci, | |
| 1783 | 1217 int comp_level, |
| 0 | 1218 methodHandle hot_method, int hot_count, |
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1219 const char* comment, Thread* THREAD) { |
| 0 | 1220 // make sure arguments make sense |
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1221 assert(method->method_holder()->oop_is_instance(), "not an instance method"); |
| 0 | 1222 assert(osr_bci == InvocationEntryBci || (0 <= osr_bci && osr_bci < method->code_size()), "bci out of range"); |
| 1223 assert(!method->is_abstract() && (osr_bci == InvocationEntryBci || !method->is_native()), "cannot compile abstract/native methods"); | |
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1224 assert(!method->method_holder()->is_not_initialized(), "method holder must be initialized"); |
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1225 // allow any levels for WhiteBox |
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1226 assert(WhiteBoxAPI || TieredCompilation || comp_level == CompLevel_highest_tier, "only CompLevel_highest_tier must be used in non-tiered"); |
| 0 | 1227 // return quickly if possible |
| 1228 | |
| 1229 // lock, make sure that the compilation | |
| 1230 // isn't prohibited in a straightforward way. | |
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1231 AbstractCompiler *comp = CompileBroker::compiler(comp_level); |
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1232 if (comp == NULL || !comp->can_compile_method(method) || |
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1233 compilation_is_prohibited(method, osr_bci, comp_level)) { |
| 0 | 1234 return NULL; |
| 1235 } | |
| 1236 | |
| 1237 if (osr_bci == InvocationEntryBci) { | |
| 1238 // standard compilation | |
| 1239 nmethod* method_code = method->code(); | |
| 1783 | 1240 if (method_code != NULL) { |
| 1241 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
| 1242 return method_code; | |
| 1243 } | |
| 0 | 1244 } |
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1245 if (method->is_not_compilable(comp_level)) { |
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1246 return NULL; |
| 1202 | 1247 } |
| 0 | 1248 } else { |
| 1249 // osr compilation | |
| 1250 #ifndef TIERED | |
| 1251 // seems like an assert of dubious value | |
| 1783 | 1252 assert(comp_level == CompLevel_highest_tier, |
| 0 | 1253 "all OSR compiles are assumed to be at a single compilation lavel"); |
| 1254 #endif // TIERED | |
| 1783 | 1255 // We accept a higher level osr method |
| 1256 nmethod* nm = method->lookup_osr_nmethod_for(osr_bci, comp_level, false); | |
| 0 | 1257 if (nm != NULL) return nm; |
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1258 if (method->is_not_osr_compilable(comp_level)) return NULL; |
| 0 | 1259 } |
| 1260 | |
| 1261 assert(!HAS_PENDING_EXCEPTION, "No exception should be present"); | |
| 1262 // some prerequisites that are compiler specific | |
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1263 if (comp->is_c2() || comp->is_shark()) { |
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1264 method->constants()->resolve_string_constants(CHECK_AND_CLEAR_NULL); |
| 0 | 1265 // Resolve all classes seen in the signature of the method |
| 1266 // we are compiling. | |
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1267 Method::load_signature_classes(method, CHECK_AND_CLEAR_NULL); |
| 0 | 1268 } |
| 1269 | |
| 1270 // If the method is native, do the lookup in the thread requesting | |
| 1271 // the compilation. Native lookups can load code, which is not | |
| 1272 // permitted during compilation. | |
| 1273 // | |
| 1274 // Note: A native method implies non-osr compilation which is | |
| 1275 // checked with an assertion at the entry of this method. | |
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1276 if (method->is_native() && !method->is_method_handle_intrinsic()) { |
| 0 | 1277 bool in_base_library; |
| 1278 address adr = NativeLookup::lookup(method, in_base_library, THREAD); | |
| 1279 if (HAS_PENDING_EXCEPTION) { | |
| 1280 // In case of an exception looking up the method, we just forget | |
| 1281 // about it. The interpreter will kick-in and throw the exception. | |
| 1282 method->set_not_compilable(); // implies is_not_osr_compilable() | |
| 1283 CLEAR_PENDING_EXCEPTION; | |
| 1284 return NULL; | |
| 1285 } | |
| 1286 assert(method->has_native_function(), "must have native code by now"); | |
| 1287 } | |
| 1288 | |
| 1289 // RedefineClasses() has replaced this method; just return | |
| 1290 if (method->is_old()) { | |
| 1291 return NULL; | |
| 1292 } | |
| 1293 | |
| 1294 // JVMTI -- post_compile_event requires jmethod_id() that may require | |
| 1295 // a lock the compiling thread can not acquire. Prefetch it here. | |
| 1296 if (JvmtiExport::should_post_compiled_method_load()) { | |
| 1297 method->jmethod_id(); | |
| 1298 } | |
| 1299 | |
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1300 // If the compiler is shut off due to code cache getting full |
| 1202 | 1301 // fail out now so blocking compiles dont hang the java thread |
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1302 if (!should_compile_new_jobs()) { |
| 1783 | 1303 CompilationPolicy::policy()->delay_compilation(method()); |
| 1202 | 1304 return NULL; |
| 1305 } | |
| 1306 | |
| 0 | 1307 // do the compilation |
| 1308 if (method->is_native()) { | |
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1309 if (!PreferInterpreterNativeStubs || method->is_method_handle_intrinsic()) { |
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1310 // Acquire our lock. |
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1311 int compile_id; |
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1312 { |
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1313 MutexLocker locker(MethodCompileQueue_lock, THREAD); |
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1314 compile_id = assign_compile_id(method, standard_entry_bci); |
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1315 } |
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1316 (void) AdapterHandlerLibrary::create_native_wrapper(method, compile_id); |
| 0 | 1317 } else { |
| 1318 return NULL; | |
| 1319 } | |
| 1320 } else { | |
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1321 compile_method_base(method, osr_bci, comp_level, hot_method, hot_count, comment, THREAD); |
| 0 | 1322 } |
| 1323 | |
| 1324 // return requested nmethod | |
| 1783 | 1325 // We accept a higher level osr method |
| 1326 return osr_bci == InvocationEntryBci ? method->code() : method->lookup_osr_nmethod_for(osr_bci, comp_level, false); | |
| 0 | 1327 } |
| 1328 | |
| 1329 | |
| 1330 // ------------------------------------------------------------------ | |
| 1331 // CompileBroker::compilation_is_complete | |
| 1332 // | |
| 1333 // See if compilation of this method is already complete. | |
| 1334 bool CompileBroker::compilation_is_complete(methodHandle method, | |
| 1335 int osr_bci, | |
| 1336 int comp_level) { | |
| 1337 bool is_osr = (osr_bci != standard_entry_bci); | |
| 1338 if (is_osr) { | |
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1339 if (method->is_not_osr_compilable(comp_level)) { |
| 0 | 1340 return true; |
| 1341 } else { | |
| 1783 | 1342 nmethod* result = method->lookup_osr_nmethod_for(osr_bci, comp_level, true); |
| 0 | 1343 return (result != NULL); |
| 1344 } | |
| 1345 } else { | |
| 1346 if (method->is_not_compilable(comp_level)) { | |
| 1347 return true; | |
| 1348 } else { | |
| 1349 nmethod* result = method->code(); | |
| 1350 if (result == NULL) return false; | |
| 1783 | 1351 return comp_level == result->comp_level(); |
| 0 | 1352 } |
| 1353 } | |
| 1354 } | |
| 1355 | |
| 1356 | |
| 1357 // ------------------------------------------------------------------ | |
| 1358 // CompileBroker::compilation_is_in_queue | |
| 1359 // | |
| 1360 // See if this compilation is already requested. | |
| 1361 // | |
| 1362 // Implementation note: there is only a single "is in queue" bit | |
| 1363 // for each method. This means that the check below is overly | |
| 1364 // conservative in the sense that an osr compilation in the queue | |
| 1365 // will block a normal compilation from entering the queue (and vice | |
| 1366 // versa). This can be remedied by a full queue search to disambiguate | |
| 1367 // cases. If it is deemed profitible, this may be done. | |
| 1368 bool CompileBroker::compilation_is_in_queue(methodHandle method, | |
| 1783 | 1369 int osr_bci) { |
| 0 | 1370 return method->queued_for_compilation(); |
| 1371 } | |
| 1372 | |
| 1373 // ------------------------------------------------------------------ | |
| 1374 // CompileBroker::compilation_is_prohibited | |
| 1375 // | |
| 1376 // See if this compilation is not allowed. | |
| 1377 bool CompileBroker::compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level) { | |
| 1378 bool is_native = method->is_native(); | |
| 1379 // Some compilers may not support the compilation of natives. | |
|
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1380 AbstractCompiler *comp = compiler(comp_level); |
| 0 | 1381 if (is_native && |
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1382 (!CICompileNatives || comp == NULL || !comp->supports_native())) { |
| 1783 | 1383 method->set_not_compilable_quietly(comp_level); |
| 0 | 1384 return true; |
| 1385 } | |
| 1386 | |
| 1387 bool is_osr = (osr_bci != standard_entry_bci); | |
| 1388 // Some compilers may not support on stack replacement. | |
| 1389 if (is_osr && | |
|
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1390 (!CICompileOSR || comp == NULL || !comp->supports_osr())) { |
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1391 method->set_not_osr_compilable(comp_level); |
| 0 | 1392 return true; |
| 1393 } | |
| 1394 | |
| 1395 // The method may be explicitly excluded by the user. | |
| 1396 bool quietly; | |
| 1397 if (CompilerOracle::should_exclude(method, quietly)) { | |
| 1398 if (!quietly) { | |
| 1399 // This does not happen quietly... | |
| 1400 ResourceMark rm; | |
| 1401 tty->print("### Excluding %s:%s", | |
| 1402 method->is_native() ? "generation of native wrapper" : "compile", | |
| 1403 (method->is_static() ? " static" : "")); | |
| 1404 method->print_short_name(tty); | |
| 1405 tty->cr(); | |
| 1406 } | |
| 7998 | 1407 method->set_not_compilable(CompLevel_all, !quietly, "excluded by CompilerOracle"); |
| 0 | 1408 } |
| 1409 | |
| 1410 return false; | |
| 1411 } | |
| 1412 | |
| 1413 | |
| 1414 // ------------------------------------------------------------------ | |
| 1415 // CompileBroker::assign_compile_id | |
| 1416 // | |
| 1417 // Assign a serialized id number to this compilation request. If the | |
| 1418 // number falls out of the allowed range, return a 0. OSR | |
| 1419 // compilations may be numbered separately from regular compilations | |
| 1420 // if certain debugging flags are used. | |
| 1421 uint CompileBroker::assign_compile_id(methodHandle method, int osr_bci) { | |
| 1783 | 1422 assert(MethodCompileQueue_lock->owner() == Thread::current(), |
| 0 | 1423 "must hold the compilation queue lock"); |
| 1424 bool is_osr = (osr_bci != standard_entry_bci); | |
| 1425 uint id; | |
| 1426 if (CICountOSR && is_osr) { | |
| 1427 id = ++_osr_compilation_id; | |
| 1428 if ((uint)CIStartOSR <= id && id < (uint)CIStopOSR) { | |
| 1429 return id; | |
| 1430 } | |
| 1431 } else { | |
| 1432 id = ++_compilation_id; | |
| 1433 if ((uint)CIStart <= id && id < (uint)CIStop) { | |
| 1434 return id; | |
| 1435 } | |
| 1436 } | |
| 1437 | |
| 1438 // Method was not in the appropriate compilation range. | |
|
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|
1439 method->set_not_compilable_quietly(); |
| 0 | 1440 return 0; |
| 1441 } | |
| 1442 | |
| 1443 | |
| 1444 // ------------------------------------------------------------------ | |
| 1445 // CompileBroker::is_compile_blocking | |
| 1446 // | |
| 1447 // Should the current thread be blocked until this compilation request | |
| 1448 // has been fulfilled? | |
| 1449 bool CompileBroker::is_compile_blocking(methodHandle method, int osr_bci) { | |
|
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1450 assert(!InstanceRefKlass::owns_pending_list_lock(JavaThread::current()), "possible deadlock"); |
|
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1451 return !BackgroundCompilation; |
| 0 | 1452 } |
| 1453 | |
| 1454 | |
| 1455 // ------------------------------------------------------------------ | |
| 1456 // CompileBroker::preload_classes | |
| 1457 void CompileBroker::preload_classes(methodHandle method, TRAPS) { | |
| 1458 // Move this code over from c1_Compiler.cpp | |
| 1459 ShouldNotReachHere(); | |
| 1460 } | |
| 1461 | |
| 1462 | |
| 1463 // ------------------------------------------------------------------ | |
| 1464 // CompileBroker::create_compile_task | |
| 1465 // | |
| 1466 // Create a CompileTask object representing the current request for | |
| 1467 // compilation. Add this task to the queue. | |
| 1468 CompileTask* CompileBroker::create_compile_task(CompileQueue* queue, | |
| 1469 int compile_id, | |
| 1470 methodHandle method, | |
| 1471 int osr_bci, | |
| 1472 int comp_level, | |
| 1473 methodHandle hot_method, | |
| 1474 int hot_count, | |
| 1475 const char* comment, | |
| 1476 bool blocking) { | |
| 1477 CompileTask* new_task = allocate_task(); | |
| 1478 new_task->initialize(compile_id, method, osr_bci, comp_level, | |
| 1479 hot_method, hot_count, comment, | |
| 1480 blocking); | |
| 1481 queue->add(new_task); | |
| 1482 return new_task; | |
| 1483 } | |
| 1484 | |
| 1485 | |
| 1486 // ------------------------------------------------------------------ | |
| 1487 // CompileBroker::allocate_task | |
| 1488 // | |
| 1489 // Allocate a CompileTask, from the free list if possible. | |
| 1490 CompileTask* CompileBroker::allocate_task() { | |
| 1491 MutexLocker locker(CompileTaskAlloc_lock); | |
| 1492 CompileTask* task = NULL; | |
| 1493 if (_task_free_list != NULL) { | |
| 1494 task = _task_free_list; | |
| 1495 _task_free_list = task->next(); | |
| 1496 task->set_next(NULL); | |
| 1497 } else { | |
| 1498 task = new CompileTask(); | |
| 1499 task->set_next(NULL); | |
| 1500 } | |
| 1501 return task; | |
| 1502 } | |
| 1503 | |
| 1504 | |
| 1505 // ------------------------------------------------------------------ | |
| 1506 // CompileBroker::free_task | |
| 1507 // | |
| 1508 // Add a task to the free list. | |
| 1509 void CompileBroker::free_task(CompileTask* task) { | |
| 1510 MutexLocker locker(CompileTaskAlloc_lock); | |
| 1511 task->free(); | |
| 1512 task->set_next(_task_free_list); | |
| 1513 _task_free_list = task; | |
| 1514 } | |
| 1515 | |
| 1516 | |
| 1517 // ------------------------------------------------------------------ | |
| 1518 // CompileBroker::wait_for_completion | |
| 1519 // | |
| 1520 // Wait for the given method CompileTask to complete. | |
| 1521 void CompileBroker::wait_for_completion(CompileTask* task) { | |
| 1522 if (CIPrintCompileQueue) { | |
| 1523 tty->print_cr("BLOCKING FOR COMPILE"); | |
| 1524 } | |
| 1525 | |
| 1526 assert(task->is_blocking(), "can only wait on blocking task"); | |
| 1527 | |
| 1528 JavaThread *thread = JavaThread::current(); | |
| 1529 thread->set_blocked_on_compilation(true); | |
| 1530 | |
|
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1531 methodHandle method(thread, task->method()); |
| 0 | 1532 { |
| 1533 MutexLocker waiter(task->lock(), thread); | |
| 1534 | |
| 1535 while (!task->is_complete()) | |
| 1536 task->lock()->wait(); | |
| 1537 } | |
| 1538 // It is harmless to check this status without the lock, because | |
| 1539 // completion is a stable property (until the task object is recycled). | |
| 1540 assert(task->is_complete(), "Compilation should have completed"); | |
| 1541 assert(task->code_handle() == NULL, "must be reset"); | |
| 1542 | |
| 1543 thread->set_blocked_on_compilation(false); | |
| 1544 | |
| 1545 // By convention, the waiter is responsible for recycling a | |
| 1546 // blocking CompileTask. Since there is only one waiter ever | |
| 1547 // waiting on a CompileTask, we know that no one else will | |
| 1548 // be using this CompileTask; we can free it. | |
| 1549 free_task(task); | |
| 1550 } | |
| 1551 | |
|
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1552 // Initialize compiler thread(s) + compiler object(s). The postcondition |
|
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|
1553 // of this function is that the compiler runtimes are initialized and that |
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1554 //compiler threads can start compiling. |
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|
1555 bool CompileBroker::init_compiler_runtime() { |
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1556 CompilerThread* thread = CompilerThread::current(); |
|
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|
1557 AbstractCompiler* comp = thread->compiler(); |
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|
1558 // Final sanity check - the compiler object must exist |
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|
1559 guarantee(comp != NULL, "Compiler object must exist"); |
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|
1560 |
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1561 int system_dictionary_modification_counter; |
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1562 { |
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1563 MutexLocker locker(Compile_lock, thread); |
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1564 system_dictionary_modification_counter = SystemDictionary::number_of_modifications(); |
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1565 } |
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1566 |
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1567 { |
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1568 // Must switch to native to allocate ci_env |
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|
1569 ThreadToNativeFromVM ttn(thread); |
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|
1570 ciEnv ci_env(NULL, system_dictionary_modification_counter); |
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1571 // Cache Jvmti state |
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|
1572 ci_env.cache_jvmti_state(); |
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1573 // Cache DTrace flags |
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|
1574 ci_env.cache_dtrace_flags(); |
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|
1575 |
|
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|
1576 // Switch back to VM state to do compiler initialization |
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1577 ThreadInVMfromNative tv(thread); |
|
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|
1578 ResetNoHandleMark rnhm; |
|
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|
1579 |
|
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|
1580 |
|
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1581 if (!comp->is_shark()) { |
|
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|
1582 // Perform per-thread and global initializations |
|
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|
1583 comp->initialize(); |
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|
1584 } |
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|
1585 } |
|
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|
1586 |
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|
1587 if (comp->is_failed()) { |
|
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|
1588 disable_compilation_forever(); |
|
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1589 // If compiler initialization failed, no compiler thread that is specific to a |
|
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1590 // particular compiler runtime will ever start to compile methods. |
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|
1591 |
|
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|
1592 shutdown_compiler_runtime(comp, thread); |
|
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|
1593 return false; |
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|
1594 } |
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|
1595 |
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|
1596 // C1 specific check |
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1597 if (comp->is_c1() && (thread->get_buffer_blob() == NULL)) { |
|
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|
1598 warning("Initialization of %s thread failed (no space to run compilers)", thread->name()); |
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1599 return false; |
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|
1600 } |
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1601 |
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1602 return true; |
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|
1603 } |
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1604 |
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1605 // If C1 and/or C2 initialization failed, we shut down all compilation. |
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1606 // We do this to keep things simple. This can be changed if it ever turns out to be |
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1607 // a problem. |
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1608 void CompileBroker::shutdown_compiler_runtime(AbstractCompiler* comp, CompilerThread* thread) { |
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1609 // Free buffer blob, if allocated |
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1610 if (thread->get_buffer_blob() != NULL) { |
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1611 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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1612 CodeCache::free(thread->get_buffer_blob()); |
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|
1613 } |
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1614 |
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1615 if (comp->should_perform_shutdown()) { |
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1616 // There are two reasons for shutting down the compiler |
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|
1617 // 1) compiler runtime initialization failed |
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1618 // 2) The code cache is full and the following flag is set: -XX:-UseCodeCacheFlushing |
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1619 warning("Shutting down compiler %s (no space to run compilers)", comp->name()); |
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|
1620 |
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1621 // Only one thread per compiler runtime object enters here |
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1622 // Set state to shut down |
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1623 comp->set_shut_down(); |
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1624 |
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1625 MutexLocker mu(MethodCompileQueue_lock, thread); |
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1626 CompileQueue* queue; |
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1627 if (_c1_method_queue != NULL) { |
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|
1628 _c1_method_queue->delete_all(); |
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1629 queue = _c1_method_queue; |
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1630 _c1_method_queue = NULL; |
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1631 delete _c1_method_queue; |
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1632 } |
|
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|
1633 |
|
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1634 if (_c2_method_queue != NULL) { |
|
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1635 _c2_method_queue->delete_all(); |
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1636 queue = _c2_method_queue; |
|
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1637 _c2_method_queue = NULL; |
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1638 delete _c2_method_queue; |
|
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|
1639 } |
|
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|
1640 |
|
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|
1641 // We could delete compiler runtimes also. However, there are references to |
|
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1642 // the compiler runtime(s) (e.g., nmethod::is_compiled_by_c1()) which then |
|
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1643 // fail. This can be done later if necessary. |
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|
1644 } |
|
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|
1645 } |
|
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|
1646 |
| 0 | 1647 // ------------------------------------------------------------------ |
| 1648 // CompileBroker::compiler_thread_loop | |
| 1649 // | |
| 1650 // The main loop run by a CompilerThread. | |
| 1651 void CompileBroker::compiler_thread_loop() { | |
| 1652 CompilerThread* thread = CompilerThread::current(); | |
| 1653 CompileQueue* queue = thread->queue(); | |
| 1654 // For the thread that initializes the ciObjectFactory | |
| 1655 // this resource mark holds all the shared objects | |
| 1656 ResourceMark rm; | |
| 1657 | |
| 1658 // First thread to get here will initialize the compiler interface | |
| 1659 | |
| 1660 if (!ciObjectFactory::is_initialized()) { | |
| 1661 ASSERT_IN_VM; | |
| 1662 MutexLocker only_one (CompileThread_lock, thread); | |
| 1663 if (!ciObjectFactory::is_initialized()) { | |
| 1664 ciObjectFactory::initialize(); | |
| 1665 } | |
| 1666 } | |
| 1667 | |
| 1668 // Open a log. | |
| 1669 if (LogCompilation) { | |
| 1670 init_compiler_thread_log(); | |
| 1671 } | |
| 1672 CompileLog* log = thread->log(); | |
| 1673 if (log != NULL) { | |
| 6843 | 1674 log->begin_elem("start_compile_thread name='%s' thread='" UINTX_FORMAT "' process='%d'", |
| 1675 thread->name(), | |
| 0 | 1676 os::current_thread_id(), |
| 1677 os::current_process_id()); | |
| 1678 log->stamp(); | |
| 1679 log->end_elem(); | |
| 1680 } | |
| 1681 | |
|
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1682 // If compiler thread/runtime initialization fails, exit the compiler thread |
|
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1683 if (!init_compiler_runtime()) { |
|
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1684 return; |
|
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|
1685 } |
| 1202 | 1686 |
|
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|
1687 // Poll for new compilation tasks as long as the JVM runs. Compilation |
|
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|
1688 // should only be disabled if something went wrong while initializing the |
|
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|
1689 // compiler runtimes. This, in turn, should not happen. The only known case |
|
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1690 // when compiler runtime initialization fails is if there is not enough free |
|
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1691 // space in the code cache to generate the necessary stubs, etc. |
|
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1692 while (!is_compilation_disabled_forever()) { |
|
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1693 // We need this HandleMark to avoid leaking VM handles. |
|
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|
1694 HandleMark hm(thread); |
| 0 | 1695 |
|
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1696 if (CodeCache::unallocated_capacity() < CodeCacheMinimumFreeSpace) { |
|
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|
1697 // the code cache is really full |
|
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1698 handle_full_code_cache(); |
|
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1699 } |
| 0 | 1700 |
|
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1701 CompileTask* task = queue->get(); |
|
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1702 if (task == NULL) { |
|
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|
1703 continue; |
|
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|
1704 } |
| 0 | 1705 |
|
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|
1706 // Give compiler threads an extra quanta. They tend to be bursty and |
|
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|
1707 // this helps the compiler to finish up the job. |
|
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1708 if( CompilerThreadHintNoPreempt ) |
|
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|
1709 os::hint_no_preempt(); |
| 0 | 1710 |
|
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1711 // trace per thread time and compile statistics |
|
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1712 CompilerCounters* counters = ((CompilerThread*)thread)->counters(); |
|
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1713 PerfTraceTimedEvent(counters->time_counter(), counters->compile_counter()); |
| 0 | 1714 |
|
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|
1715 // Assign the task to the current thread. Mark this compilation |
|
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1716 // thread as active for the profiler. |
|
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|
1717 CompileTaskWrapper ctw(task); |
|
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|
1718 nmethodLocker result_handle; // (handle for the nmethod produced by this task) |
|
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|
1719 task->set_code_handle(&result_handle); |
|
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|
1720 methodHandle method(thread, task->method()); |
|
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|
1721 |
|
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|
1722 // Never compile a method if breakpoints are present in it |
|
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|
1723 if (method()->number_of_breakpoints() == 0) { |
|
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|
1724 // Compile the method. |
|
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|
1725 if ((UseCompiler || AlwaysCompileLoopMethods) && CompileBroker::should_compile_new_jobs()) { |
| 0 | 1726 #ifdef COMPILER1 |
|
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|
1727 // Allow repeating compilations for the purpose of benchmarking |
|
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|
1728 // compile speed. This is not useful for customers. |
|
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|
1729 if (CompilationRepeat != 0) { |
|
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|
1730 int compile_count = CompilationRepeat; |
|
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|
1731 while (compile_count > 0) { |
|
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|
1732 invoke_compiler_on_method(task); |
|
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|
1733 nmethod* nm = method->code(); |
|
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|
1734 if (nm != NULL) { |
|
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|
1735 nm->make_zombie(); |
|
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|
1736 method->clear_code(); |
| 0 | 1737 } |
|
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|
1738 compile_count--; |
| 0 | 1739 } |
|
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|
1740 } |
| 0 | 1741 #endif /* COMPILER1 */ |
|
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|
1742 invoke_compiler_on_method(task); |
|
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|
1743 } else { |
|
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|
1744 // After compilation is disabled, remove remaining methods from queue |
|
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|
1745 method->clear_queued_for_compilation(); |
| 0 | 1746 } |
| 1747 } | |
| 1748 } | |
|
12880
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|
1749 |
|
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|
1750 // Shut down compiler runtime |
|
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|
1751 shutdown_compiler_runtime(thread->compiler(), thread); |
| 0 | 1752 } |
| 1753 | |
| 1754 // ------------------------------------------------------------------ | |
| 1755 // CompileBroker::init_compiler_thread_log | |
| 1756 // | |
| 1757 // Set up state required by +LogCompilation. | |
| 1758 void CompileBroker::init_compiler_thread_log() { | |
| 1759 CompilerThread* thread = CompilerThread::current(); | |
|
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|
1760 char file_name[4*K]; |
| 0 | 1761 FILE* fp = NULL; |
| 1762 intx thread_id = os::current_thread_id(); | |
| 1763 for (int try_temp_dir = 1; try_temp_dir >= 0; try_temp_dir--) { | |
| 1764 const char* dir = (try_temp_dir ? os::get_temp_directory() : NULL); | |
|
1353
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|
1765 if (dir == NULL) { |
|
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|
1766 jio_snprintf(file_name, sizeof(file_name), "hs_c" UINTX_FORMAT "_pid%u.log", |
|
1353
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|
1767 thread_id, os::current_process_id()); |
|
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|
1768 } else { |
|
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|
1769 jio_snprintf(file_name, sizeof(file_name), |
|
1353
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|
1770 "%s%shs_c" UINTX_FORMAT "_pid%u.log", dir, |
|
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|
1771 os::file_separator(), thread_id, os::current_process_id()); |
|
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|
1772 } |
|
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|
1773 |
|
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|
1774 fp = fopen(file_name, "at"); |
| 0 | 1775 if (fp != NULL) { |
|
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|
1776 if (LogCompilation && Verbose) { |
|
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|
1777 tty->print_cr("Opening compilation log %s", file_name); |
|
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|
1778 } |
|
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|
1779 CompileLog* log = new(ResourceObj::C_HEAP, mtCompiler) CompileLog(file_name, fp, thread_id); |
|
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|
1780 thread->init_log(log); |
|
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|
1781 |
|
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|
1782 if (xtty != NULL) { |
|
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|
1783 ttyLocker ttyl; |
|
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|
1784 // Record any per thread log files |
|
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|
1785 xtty->elem("thread_logfile thread='%d' filename='%s'", thread_id, file_name); |
|
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|
1786 } |
|
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|
1787 return; |
| 0 | 1788 } |
| 1789 } | |
|
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|
1790 warning("Cannot open log file: %s", file_name); |
| 0 | 1791 } |
| 1792 | |
| 1793 // ------------------------------------------------------------------ | |
| 1794 // CompileBroker::set_should_block | |
| 1795 // | |
| 1796 // Set _should_block. | |
| 1797 // Call this from the VM, with Threads_lock held and a safepoint requested. | |
| 1798 void CompileBroker::set_should_block() { | |
| 1799 assert(Threads_lock->owner() == Thread::current(), "must have threads lock"); | |
| 1800 assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint already"); | |
| 1801 #ifndef PRODUCT | |
| 1802 if (PrintCompilation && (Verbose || WizardMode)) | |
| 1803 tty->print_cr("notifying compiler thread pool to block"); | |
| 1804 #endif | |
| 1805 _should_block = true; | |
| 1806 } | |
| 1807 | |
| 1808 // ------------------------------------------------------------------ | |
| 1809 // CompileBroker::maybe_block | |
| 1810 // | |
| 1811 // Call this from the compiler at convenient points, to poll for _should_block. | |
| 1812 void CompileBroker::maybe_block() { | |
| 1813 if (_should_block) { | |
| 1814 #ifndef PRODUCT | |
| 1815 if (PrintCompilation && (Verbose || WizardMode)) | |
| 1816 tty->print_cr("compiler thread " INTPTR_FORMAT " poll detects block request", Thread::current()); | |
| 1817 #endif | |
| 1818 ThreadInVMfromNative tivfn(JavaThread::current()); | |
| 1819 } | |
| 1820 } | |
| 1821 | |
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1822 // wrapper for CodeCache::print_summary() |
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1823 static void codecache_print(bool detailed) |
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1824 { |
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1825 ResourceMark rm; |
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1826 stringStream s; |
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1827 // Dump code cache into a buffer before locking the tty, |
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1828 { |
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1829 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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1830 CodeCache::print_summary(&s, detailed); |
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1831 } |
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1832 ttyLocker ttyl; |
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1833 tty->print(s.as_string()); |
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1834 } |
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1835 |
| 0 | 1836 // ------------------------------------------------------------------ |
| 1837 // CompileBroker::invoke_compiler_on_method | |
| 1838 // | |
| 1839 // Compile a method. | |
| 1840 // | |
| 1841 void CompileBroker::invoke_compiler_on_method(CompileTask* task) { | |
| 1842 if (PrintCompilation) { | |
| 1843 ResourceMark rm; | |
| 1844 task->print_line(); | |
| 1845 } | |
| 1846 elapsedTimer time; | |
| 1847 | |
| 1848 CompilerThread* thread = CompilerThread::current(); | |
| 1849 ResourceMark rm(thread); | |
| 1850 | |
|
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1851 if (LogEvents) { |
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1852 _compilation_log->log_compile(thread, task); |
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1853 } |
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1854 |
| 0 | 1855 // Common flags. |
| 1856 uint compile_id = task->compile_id(); | |
| 1857 int osr_bci = task->osr_bci(); | |
| 1858 bool is_osr = (osr_bci != standard_entry_bci); | |
| 1859 bool should_log = (thread->log() != NULL); | |
| 1860 bool should_break = false; | |
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1861 int task_level = task->comp_level(); |
| 0 | 1862 { |
| 1863 // create the handle inside it's own block so it can't | |
| 1864 // accidentally be referenced once the thread transitions to | |
| 1865 // native. The NoHandleMark before the transition should catch | |
| 1866 // any cases where this occurs in the future. | |
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1867 methodHandle method(thread, task->method()); |
| 0 | 1868 should_break = check_break_at(method, compile_id, is_osr); |
| 1869 if (should_log && !CompilerOracle::should_log(method)) { | |
| 1870 should_log = false; | |
| 1871 } | |
| 1872 assert(!method->is_native(), "no longer compile natives"); | |
| 1873 | |
| 1874 // Save information about this method in case of failure. | |
|
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1875 set_last_compile(thread, method, is_osr, task_level); |
| 0 | 1876 |
|
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1877 DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, compiler_name(task_level)); |
| 0 | 1878 } |
| 1879 | |
| 1880 // Allocate a new set of JNI handles. | |
| 1881 push_jni_handle_block(); | |
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1882 Method* target_handle = task->method(); |
| 0 | 1883 int compilable = ciEnv::MethodCompilable; |
| 1884 { | |
| 1885 int system_dictionary_modification_counter; | |
| 1886 { | |
| 1887 MutexLocker locker(Compile_lock, thread); | |
| 1888 system_dictionary_modification_counter = SystemDictionary::number_of_modifications(); | |
| 1889 } | |
| 1890 | |
| 1891 NoHandleMark nhm; | |
| 1892 ThreadToNativeFromVM ttn(thread); | |
| 1893 | |
| 1894 ciEnv ci_env(task, system_dictionary_modification_counter); | |
| 1895 if (should_break) { | |
| 1896 ci_env.set_break_at_compile(true); | |
| 1897 } | |
| 1898 if (should_log) { | |
| 1899 ci_env.set_log(thread->log()); | |
| 1900 } | |
| 1901 assert(thread->env() == &ci_env, "set by ci_env"); | |
| 1902 // The thread-env() field is cleared in ~CompileTaskWrapper. | |
| 1903 | |
|
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1904 // Cache Jvmti state |
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1905 ci_env.cache_jvmti_state(); |
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1906 |
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1907 // Cache DTrace flags |
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1908 ci_env.cache_dtrace_flags(); |
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1909 |
| 0 | 1910 ciMethod* target = ci_env.get_method_from_handle(target_handle); |
| 1911 | |
| 1912 TraceTime t1("compilation", &time); | |
| 10405 | 1913 EventCompilation event; |
| 0 | 1914 |
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1915 AbstractCompiler *comp = compiler(task_level); |
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1916 if (comp == NULL) { |
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1917 ci_env.record_method_not_compilable("no compiler", !TieredCompilation); |
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1918 } else { |
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1919 comp->compile_method(&ci_env, target, osr_bci); |
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1920 } |
| 0 | 1921 |
| 1922 if (!ci_env.failing() && task->code() == NULL) { | |
| 1923 //assert(false, "compiler should always document failure"); | |
| 1924 // The compiler elected, without comment, not to register a result. | |
| 1925 // Do not attempt further compilations of this method. | |
|
1964
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1926 ci_env.record_method_not_compilable("compile failed", !TieredCompilation); |
| 0 | 1927 } |
| 1928 | |
|
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1929 // Copy this bit to the enclosing block: |
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1930 compilable = ci_env.compilable(); |
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1931 |
| 0 | 1932 if (ci_env.failing()) { |
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1933 const char* retry_message = ci_env.retry_message(); |
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1934 if (_compilation_log != NULL) { |
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1935 _compilation_log->log_failure(thread, task, ci_env.failure_reason(), retry_message); |
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1936 } |
| 0 | 1937 if (PrintCompilation) { |
|
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1938 FormatBufferResource msg = retry_message != NULL ? |
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1939 err_msg_res("COMPILE SKIPPED: %s (%s)", ci_env.failure_reason(), retry_message) : |
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1940 err_msg_res("COMPILE SKIPPED: %s", ci_env.failure_reason()); |
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1941 task->print_compilation(tty, msg); |
| 0 | 1942 } |
| 1943 } else { | |
| 1944 task->mark_success(); | |
| 1945 task->set_num_inlined_bytecodes(ci_env.num_inlined_bytecodes()); | |
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1946 if (_compilation_log != NULL) { |
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1947 nmethod* code = task->code(); |
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1948 if (code != NULL) { |
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1949 _compilation_log->log_nmethod(thread, code); |
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1950 } |
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1951 } |
| 0 | 1952 } |
|
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1953 // simulate crash during compilation |
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1954 assert(task->compile_id() != CICrashAt, "just as planned"); |
| 10405 | 1955 if (event.should_commit()) { |
| 1956 event.set_method(target->get_Method()); | |
| 1957 event.set_compileID(compile_id); | |
| 1958 event.set_compileLevel(task->comp_level()); | |
| 1959 event.set_succeded(task->is_success()); | |
| 1960 event.set_isOsr(is_osr); | |
| 1961 event.set_codeSize((task->code() == NULL) ? 0 : task->code()->total_size()); | |
| 1962 event.set_inlinedBytes(task->num_inlined_bytecodes()); | |
| 1963 event.commit(); | |
| 1964 } | |
| 0 | 1965 } |
| 1966 pop_jni_handle_block(); | |
| 1967 | |
|
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1968 methodHandle method(thread, task->method()); |
| 0 | 1969 |
|
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1970 DTRACE_METHOD_COMPILE_END_PROBE(method, compiler_name(task_level), task->is_success()); |
| 0 | 1971 |
| 1972 collect_statistics(thread, time, task); | |
| 1973 | |
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1974 if (PrintCompilation && PrintCompilation2) { |
| 4047 | 1975 tty->print("%7d ", (int) tty->time_stamp().milliseconds()); // print timestamp |
| 1976 tty->print("%4d ", compile_id); // print compilation number | |
| 1977 tty->print("%s ", (is_osr ? "%" : " ")); | |
| 10278 | 1978 if (task->code() != NULL) { |
| 1979 tty->print("size: %d(%d) ", task->code()->total_size(), task->code()->insts_size()); | |
| 1980 } | |
| 1981 tty->print_cr("time: %d inlined: %d bytes", (int)time.milliseconds(), task->num_inlined_bytecodes()); | |
| 4047 | 1982 } |
| 1983 | |
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1984 if (PrintCodeCacheOnCompilation) |
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1985 codecache_print(/* detailed= */ false); |
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1986 |
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1987 // Disable compilation, if required. |
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1988 switch (compilable) { |
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1989 case ciEnv::MethodCompilable_never: |
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1990 if (is_osr) |
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1991 method->set_not_osr_compilable_quietly(); |
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1992 else |
|
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1993 method->set_not_compilable_quietly(); |
|
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1994 break; |
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1995 case ciEnv::MethodCompilable_not_at_tier: |
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1996 if (is_osr) |
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1997 method->set_not_osr_compilable_quietly(task_level); |
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1998 else |
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1999 method->set_not_compilable_quietly(task_level); |
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2000 break; |
| 0 | 2001 } |
| 2002 | |
| 2003 // Note that the queued_for_compilation bits are cleared without | |
| 2004 // protection of a mutex. [They were set by the requester thread, | |
| 2005 // when adding the task to the complie queue -- at which time the | |
| 2006 // compile queue lock was held. Subsequently, we acquired the compile | |
| 2007 // queue lock to get this task off the compile queue; thus (to belabour | |
| 2008 // the point somewhat) our clearing of the bits must be occurring | |
| 2009 // only after the setting of the bits. See also 14012000 above. | |
| 2010 method->clear_queued_for_compilation(); | |
| 2011 | |
| 2012 #ifdef ASSERT | |
| 2013 if (CollectedHeap::fired_fake_oom()) { | |
| 2014 // The current compile received a fake OOM during compilation so | |
| 2015 // go ahead and exit the VM since the test apparently succeeded | |
| 2016 tty->print_cr("*** Shutting down VM after successful fake OOM"); | |
| 2017 vm_exit(0); | |
| 2018 } | |
| 2019 #endif | |
| 2020 } | |
| 2021 | |
| 2022 // ------------------------------------------------------------------ | |
| 1202 | 2023 // CompileBroker::handle_full_code_cache |
| 2024 // | |
| 2025 // The CodeCache is full. Print out warning and disable compilation or | |
| 2026 // try code cache cleaning so compilation can continue later. | |
| 2027 void CompileBroker::handle_full_code_cache() { | |
| 2028 UseInterpreter = true; | |
| 2029 if (UseCompiler || AlwaysCompileLoopMethods ) { | |
|
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2030 if (xtty != NULL) { |
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2031 ResourceMark rm; |
|
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2032 stringStream s; |
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2033 // Dump code cache state into a buffer before locking the tty, |
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2034 // because log_state() will use locks causing lock conflicts. |
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2035 CodeCache::log_state(&s); |
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2036 // Lock to prevent tearing |
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2037 ttyLocker ttyl; |
|
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2038 xtty->begin_elem("code_cache_full"); |
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2039 xtty->print(s.as_string()); |
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2040 xtty->stamp(); |
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2041 xtty->end_elem(); |
| 1202 | 2042 } |
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2043 warning("CodeCache is full. Compiler has been disabled."); |
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2044 warning("Try increasing the code cache size using -XX:ReservedCodeCacheSize="); |
| 10405 | 2045 |
| 2046 CodeCache::report_codemem_full(); | |
| 2047 | |
| 2048 | |
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2049 #ifndef PRODUCT |
| 1202 | 2050 if (CompileTheWorld || ExitOnFullCodeCache) { |
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2051 codecache_print(/* detailed= */ true); |
| 1202 | 2052 before_exit(JavaThread::current()); |
| 2053 exit_globals(); // will delete tty | |
| 2054 vm_direct_exit(CompileTheWorld ? 0 : 1); | |
| 2055 } | |
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2056 #endif |
| 1202 | 2057 if (UseCodeCacheFlushing) { |
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2058 // Since code cache is full, immediately stop new compiles |
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2059 if (CompileBroker::set_should_compile_new_jobs(CompileBroker::stop_compilation)) { |
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2060 NMethodSweeper::log_sweep("disable_compiler"); |
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2061 |
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2062 // Switch to 'vm_state'. This ensures that possibly_sweep() can be called |
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2063 // without having to consider the state in which the current thread is. |
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2064 ThreadInVMfromUnknown in_vm; |
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2065 NMethodSweeper::possibly_sweep(); |
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2066 } |
| 1202 | 2067 } else { |
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2068 disable_compilation_forever(); |
| 1202 | 2069 } |
| 2070 } | |
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2071 codecache_print(/* detailed= */ true); |
| 1202 | 2072 } |
| 2073 | |
| 2074 // ------------------------------------------------------------------ | |
| 0 | 2075 // CompileBroker::set_last_compile |
| 2076 // | |
| 2077 // Record this compilation for debugging purposes. | |
| 2078 void CompileBroker::set_last_compile(CompilerThread* thread, methodHandle method, bool is_osr, int comp_level) { | |
| 2079 ResourceMark rm; | |
| 2080 char* method_name = method->name()->as_C_string(); | |
| 2081 strncpy(_last_method_compiled, method_name, CompileBroker::name_buffer_length); | |
| 2082 char current_method[CompilerCounters::cmname_buffer_length]; | |
| 2083 size_t maxLen = CompilerCounters::cmname_buffer_length; | |
| 2084 | |
| 2085 if (UsePerfData) { | |
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2086 const char* class_name = method->method_holder()->name()->as_C_string(); |
| 0 | 2087 |
| 2088 size_t s1len = strlen(class_name); | |
| 2089 size_t s2len = strlen(method_name); | |
| 2090 | |
| 2091 // check if we need to truncate the string | |
| 2092 if (s1len + s2len + 2 > maxLen) { | |
| 2093 | |
| 2094 // the strategy is to lop off the leading characters of the | |
| 2095 // class name and the trailing characters of the method name. | |
| 2096 | |
| 2097 if (s2len + 2 > maxLen) { | |
| 2098 // lop of the entire class name string, let snprintf handle | |
| 2099 // truncation of the method name. | |
| 2100 class_name += s1len; // null string | |
| 2101 } | |
| 2102 else { | |
| 2103 // lop off the extra characters from the front of the class name | |
| 2104 class_name += ((s1len + s2len + 2) - maxLen); | |
| 2105 } | |
| 2106 } | |
| 2107 | |
| 2108 jio_snprintf(current_method, maxLen, "%s %s", class_name, method_name); | |
| 2109 } | |
| 2110 | |
| 2111 if (CICountOSR && is_osr) { | |
| 2112 _last_compile_type = osr_compile; | |
| 2113 } else { | |
| 2114 _last_compile_type = normal_compile; | |
| 2115 } | |
| 2116 _last_compile_level = comp_level; | |
| 2117 | |
| 2118 if (UsePerfData) { | |
| 2119 CompilerCounters* counters = thread->counters(); | |
| 2120 counters->set_current_method(current_method); | |
| 2121 counters->set_compile_type((jlong)_last_compile_type); | |
| 2122 } | |
| 2123 } | |
| 2124 | |
| 2125 | |
| 2126 // ------------------------------------------------------------------ | |
| 2127 // CompileBroker::push_jni_handle_block | |
| 2128 // | |
| 2129 // Push on a new block of JNI handles. | |
| 2130 void CompileBroker::push_jni_handle_block() { | |
| 2131 JavaThread* thread = JavaThread::current(); | |
| 2132 | |
| 2133 // Allocate a new block for JNI handles. | |
| 2134 // Inlined code from jni_PushLocalFrame() | |
| 2135 JNIHandleBlock* java_handles = thread->active_handles(); | |
| 2136 JNIHandleBlock* compile_handles = JNIHandleBlock::allocate_block(thread); | |
| 2137 assert(compile_handles != NULL && java_handles != NULL, "should not be NULL"); | |
| 2138 compile_handles->set_pop_frame_link(java_handles); // make sure java handles get gc'd. | |
| 2139 thread->set_active_handles(compile_handles); | |
| 2140 } | |
| 2141 | |
| 2142 | |
| 2143 // ------------------------------------------------------------------ | |
| 2144 // CompileBroker::pop_jni_handle_block | |
| 2145 // | |
| 2146 // Pop off the current block of JNI handles. | |
| 2147 void CompileBroker::pop_jni_handle_block() { | |
| 2148 JavaThread* thread = JavaThread::current(); | |
| 2149 | |
| 2150 // Release our JNI handle block | |
| 2151 JNIHandleBlock* compile_handles = thread->active_handles(); | |
| 2152 JNIHandleBlock* java_handles = compile_handles->pop_frame_link(); | |
| 2153 thread->set_active_handles(java_handles); | |
| 2154 compile_handles->set_pop_frame_link(NULL); | |
| 2155 JNIHandleBlock::release_block(compile_handles, thread); // may block | |
| 2156 } | |
| 2157 | |
| 2158 | |
| 2159 // ------------------------------------------------------------------ | |
| 2160 // CompileBroker::check_break_at | |
| 2161 // | |
| 2162 // Should the compilation break at the current compilation. | |
| 2163 bool CompileBroker::check_break_at(methodHandle method, int compile_id, bool is_osr) { | |
| 2164 if (CICountOSR && is_osr && (compile_id == CIBreakAtOSR)) { | |
| 2165 return true; | |
| 2166 } else if( CompilerOracle::should_break_at(method) ) { // break when compiling | |
| 2167 return true; | |
| 2168 } else { | |
| 2169 return (compile_id == CIBreakAt); | |
| 2170 } | |
| 2171 } | |
| 2172 | |
| 2173 // ------------------------------------------------------------------ | |
| 2174 // CompileBroker::collect_statistics | |
| 2175 // | |
| 2176 // Collect statistics about the compilation. | |
| 2177 | |
| 2178 void CompileBroker::collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task) { | |
| 2179 bool success = task->is_success(); | |
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2180 methodHandle method (thread, task->method()); |
| 0 | 2181 uint compile_id = task->compile_id(); |
| 2182 bool is_osr = (task->osr_bci() != standard_entry_bci); | |
| 2183 nmethod* code = task->code(); | |
| 2184 CompilerCounters* counters = thread->counters(); | |
| 2185 | |
| 2186 assert(code == NULL || code->is_locked_by_vm(), "will survive the MutexLocker"); | |
| 2187 MutexLocker locker(CompileStatistics_lock); | |
| 2188 | |
| 2189 // _perf variables are production performance counters which are | |
| 2190 // updated regardless of the setting of the CITime and CITimeEach flags | |
| 2191 // | |
| 2192 if (!success) { | |
| 2193 _total_bailout_count++; | |
| 2194 if (UsePerfData) { | |
| 2195 _perf_last_failed_method->set_value(counters->current_method()); | |
| 2196 _perf_last_failed_type->set_value(counters->compile_type()); | |
| 2197 _perf_total_bailout_count->inc(); | |
| 2198 } | |
| 2199 } else if (code == NULL) { | |
| 2200 if (UsePerfData) { | |
| 2201 _perf_last_invalidated_method->set_value(counters->current_method()); | |
| 2202 _perf_last_invalidated_type->set_value(counters->compile_type()); | |
| 2203 _perf_total_invalidated_count->inc(); | |
| 2204 } | |
| 2205 _total_invalidated_count++; | |
| 2206 } else { | |
| 2207 // Compilation succeeded | |
| 2208 | |
| 2209 // update compilation ticks - used by the implementation of | |
| 2210 // java.lang.management.CompilationMBean | |
| 2211 _perf_total_compilation->inc(time.ticks()); | |
| 2212 | |
| 10405 | 2213 _t_total_compilation.add(time); |
| 2214 _peak_compilation_time = time.milliseconds() > _peak_compilation_time ? time.milliseconds() : _peak_compilation_time; | |
| 2215 | |
| 0 | 2216 if (CITime) { |
| 2217 if (is_osr) { | |
| 2218 _t_osr_compilation.add(time); | |
| 2219 _sum_osr_bytes_compiled += method->code_size() + task->num_inlined_bytecodes(); | |
| 2220 } else { | |
| 2221 _t_standard_compilation.add(time); | |
| 2222 _sum_standard_bytes_compiled += method->code_size() + task->num_inlined_bytecodes(); | |
| 2223 } | |
| 2224 } | |
| 2225 | |
| 2226 if (UsePerfData) { | |
| 2227 // save the name of the last method compiled | |
| 2228 _perf_last_method->set_value(counters->current_method()); | |
| 2229 _perf_last_compile_type->set_value(counters->compile_type()); | |
| 2230 _perf_last_compile_size->set_value(method->code_size() + | |
| 2231 task->num_inlined_bytecodes()); | |
| 2232 if (is_osr) { | |
| 2233 _perf_osr_compilation->inc(time.ticks()); | |
| 2234 _perf_sum_osr_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes()); | |
| 2235 } else { | |
| 2236 _perf_standard_compilation->inc(time.ticks()); | |
| 2237 _perf_sum_standard_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes()); | |
| 2238 } | |
| 2239 } | |
| 2240 | |
| 2241 if (CITimeEach) { | |
| 2242 float bytes_per_sec = 1.0 * (method->code_size() + task->num_inlined_bytecodes()) / time.seconds(); | |
| 2243 tty->print_cr("%3d seconds: %f bytes/sec : %f (bytes %d + %d inlined)", | |
| 2244 compile_id, time.seconds(), bytes_per_sec, method->code_size(), task->num_inlined_bytecodes()); | |
| 2245 } | |
| 2246 | |
| 2247 // Collect counts of successful compilations | |
| 1748 | 2248 _sum_nmethod_size += code->total_size(); |
| 2249 _sum_nmethod_code_size += code->insts_size(); | |
| 0 | 2250 _total_compile_count++; |
| 2251 | |
| 2252 if (UsePerfData) { | |
| 1748 | 2253 _perf_sum_nmethod_size->inc( code->total_size()); |
| 2254 _perf_sum_nmethod_code_size->inc(code->insts_size()); | |
| 0 | 2255 _perf_total_compile_count->inc(); |
| 2256 } | |
| 2257 | |
| 2258 if (is_osr) { | |
| 2259 if (UsePerfData) _perf_total_osr_compile_count->inc(); | |
| 2260 _total_osr_compile_count++; | |
| 2261 } else { | |
| 2262 if (UsePerfData) _perf_total_standard_compile_count->inc(); | |
| 2263 _total_standard_compile_count++; | |
| 2264 } | |
| 2265 } | |
| 2266 // set the current method for the thread to null | |
| 2267 if (UsePerfData) counters->set_current_method(""); | |
| 2268 } | |
| 2269 | |
|
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2270 const char* CompileBroker::compiler_name(int comp_level) { |
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2271 AbstractCompiler *comp = CompileBroker::compiler(comp_level); |
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2272 if (comp == NULL) { |
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2273 return "no compiler"; |
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2274 } else { |
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2275 return (comp->name()); |
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2276 } |
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|
2277 } |
| 0 | 2278 |
| 2279 void CompileBroker::print_times() { | |
| 2280 tty->cr(); | |
| 2281 tty->print_cr("Accumulated compiler times (for compiled methods only)"); | |
| 2282 tty->print_cr("------------------------------------------------"); | |
| 2283 //0000000000111111111122222222223333333333444444444455555555556666666666 | |
| 2284 //0123456789012345678901234567890123456789012345678901234567890123456789 | |
| 2285 tty->print_cr(" Total compilation time : %6.3f s", CompileBroker::_t_total_compilation.seconds()); | |
| 2286 tty->print_cr(" Standard compilation : %6.3f s, Average : %2.3f", | |
| 2287 CompileBroker::_t_standard_compilation.seconds(), | |
| 2288 CompileBroker::_t_standard_compilation.seconds() / CompileBroker::_total_standard_compile_count); | |
| 2289 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); | |
| 1131 | 2290 |
|
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2291 AbstractCompiler *comp = compiler(CompLevel_simple); |
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2292 if (comp != NULL) { |
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2293 comp->print_timers(); |
| 0 | 2294 } |
|
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2295 comp = compiler(CompLevel_full_optimization); |
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2296 if (comp != NULL) { |
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2297 comp->print_timers(); |
| 1783 | 2298 } |
| 0 | 2299 tty->cr(); |
| 8860 | 2300 tty->print_cr(" Total compiled methods : %6d methods", CompileBroker::_total_compile_count); |
| 2301 tty->print_cr(" Standard compilation : %6d methods", CompileBroker::_total_standard_compile_count); | |
| 2302 tty->print_cr(" On stack replacement : %6d methods", CompileBroker::_total_osr_compile_count); | |
| 0 | 2303 int tcb = CompileBroker::_sum_osr_bytes_compiled + CompileBroker::_sum_standard_bytes_compiled; |
| 2304 tty->print_cr(" Total compiled bytecodes : %6d bytes", tcb); | |
| 2305 tty->print_cr(" Standard compilation : %6d bytes", CompileBroker::_sum_standard_bytes_compiled); | |
| 2306 tty->print_cr(" On stack replacement : %6d bytes", CompileBroker::_sum_osr_bytes_compiled); | |
| 2307 int bps = (int)(tcb / CompileBroker::_t_total_compilation.seconds()); | |
| 2308 tty->print_cr(" Average compilation speed: %6d bytes/s", bps); | |
| 2309 tty->cr(); | |
| 2310 tty->print_cr(" nmethod code size : %6d bytes", CompileBroker::_sum_nmethod_code_size); | |
| 2311 tty->print_cr(" nmethod total size : %6d bytes", CompileBroker::_sum_nmethod_size); | |
| 2312 } | |
| 2313 | |
| 2314 // Debugging output for failure | |
| 2315 void CompileBroker::print_last_compile() { | |
| 2316 if ( _last_compile_level != CompLevel_none && | |
| 2317 compiler(_last_compile_level) != NULL && | |
| 2318 _last_method_compiled != NULL && | |
| 2319 _last_compile_type != no_compile) { | |
| 2320 if (_last_compile_type == osr_compile) { | |
| 2321 tty->print_cr("Last parse: [osr]%d+++(%d) %s", | |
| 2322 _osr_compilation_id, _last_compile_level, _last_method_compiled); | |
| 2323 } else { | |
| 2324 tty->print_cr("Last parse: %d+++(%d) %s", | |
| 2325 _compilation_id, _last_compile_level, _last_method_compiled); | |
| 2326 } | |
| 2327 } | |
| 2328 } | |
| 2329 | |
| 2330 | |
| 2331 void CompileBroker::print_compiler_threads_on(outputStream* st) { | |
| 2332 #ifndef PRODUCT | |
| 2333 st->print_cr("Compiler thread printing unimplemented."); | |
| 2334 st->cr(); | |
| 2335 #endif | |
| 2336 } |