Mercurial > hg > truffle
annotate src/share/vm/compiler/compileBroker.cpp @ 12355:cefad50507d8
Merge with hs25-b53
| author | Gilles Duboscq <duboscq@ssw.jku.at> |
|---|---|
| date | Fri, 11 Oct 2013 10:38:03 +0200 |
| parents | 836a62f43af9 510fbd28919c |
| children | 359f7e70ae7f |
| 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 | |
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52 #ifdef GRAAL |
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53 #include "graal/graalCompiler.hpp" |
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54 #endif |
| 1972 | 55 #ifdef COMPILER2 |
| 56 #include "opto/c2compiler.hpp" | |
| 57 #endif | |
| 58 #ifdef SHARK | |
| 59 #include "shark/sharkCompiler.hpp" | |
| 60 #endif | |
| 0 | 61 |
| 62 #ifdef DTRACE_ENABLED | |
| 63 | |
| 64 // Only bother with this argument setup if dtrace is available | |
| 65 | |
| 4006 | 66 #ifndef USDT2 |
| 0 | 67 HS_DTRACE_PROBE_DECL8(hotspot, method__compile__begin, |
| 68 char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t); | |
| 69 HS_DTRACE_PROBE_DECL9(hotspot, method__compile__end, | |
| 70 char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t, bool); | |
| 71 | |
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72 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, comp_name) \ |
| 0 | 73 { \ |
|
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74 Symbol* klass_name = (method)->klass_name(); \ |
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75 Symbol* name = (method)->name(); \ |
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76 Symbol* signature = (method)->signature(); \ |
| 0 | 77 HS_DTRACE_PROBE8(hotspot, method__compile__begin, \ |
| 78 comp_name, strlen(comp_name), \ | |
| 79 klass_name->bytes(), klass_name->utf8_length(), \ | |
| 80 name->bytes(), name->utf8_length(), \ | |
| 81 signature->bytes(), signature->utf8_length()); \ | |
| 82 } | |
| 83 | |
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84 #define DTRACE_METHOD_COMPILE_END_PROBE(method, comp_name, success) \ |
| 0 | 85 { \ |
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86 Symbol* klass_name = (method)->klass_name(); \ |
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87 Symbol* name = (method)->name(); \ |
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88 Symbol* signature = (method)->signature(); \ |
| 0 | 89 HS_DTRACE_PROBE9(hotspot, method__compile__end, \ |
| 90 comp_name, strlen(comp_name), \ | |
| 91 klass_name->bytes(), klass_name->utf8_length(), \ | |
| 92 name->bytes(), name->utf8_length(), \ | |
| 93 signature->bytes(), signature->utf8_length(), (success)); \ | |
| 94 } | |
| 95 | |
| 4006 | 96 #else /* USDT2 */ |
| 97 | |
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98 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, comp_name) \ |
| 4006 | 99 { \ |
| 100 Symbol* klass_name = (method)->klass_name(); \ | |
| 101 Symbol* name = (method)->name(); \ | |
| 102 Symbol* signature = (method)->signature(); \ | |
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103 HOTSPOT_METHOD_COMPILE_BEGIN( \ |
| 4006 | 104 comp_name, strlen(comp_name), \ |
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105 (char *) klass_name->bytes(), klass_name->utf8_length(), \ |
| 4006 | 106 (char *) name->bytes(), name->utf8_length(), \ |
| 107 (char *) signature->bytes(), signature->utf8_length()); \ | |
| 108 } | |
| 109 | |
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110 #define DTRACE_METHOD_COMPILE_END_PROBE(method, comp_name, success) \ |
| 4006 | 111 { \ |
| 112 Symbol* klass_name = (method)->klass_name(); \ | |
| 113 Symbol* name = (method)->name(); \ | |
| 114 Symbol* signature = (method)->signature(); \ | |
| 115 HOTSPOT_METHOD_COMPILE_END( \ | |
| 116 comp_name, strlen(comp_name), \ | |
| 117 (char *) klass_name->bytes(), klass_name->utf8_length(), \ | |
| 118 (char *) name->bytes(), name->utf8_length(), \ | |
| 119 (char *) signature->bytes(), signature->utf8_length(), (success)); \ | |
| 120 } | |
| 121 #endif /* USDT2 */ | |
| 122 | |
| 0 | 123 #else // ndef DTRACE_ENABLED |
| 124 | |
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125 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, comp_name) |
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126 #define DTRACE_METHOD_COMPILE_END_PROBE(method, comp_name, success) |
| 0 | 127 |
| 128 #endif // ndef DTRACE_ENABLED | |
| 129 | |
| 130 bool CompileBroker::_initialized = false; | |
| 131 volatile bool CompileBroker::_should_block = false; | |
| 1202 | 132 volatile jint CompileBroker::_should_compile_new_jobs = run_compilation; |
| 0 | 133 |
| 134 // The installed compiler(s) | |
| 135 AbstractCompiler* CompileBroker::_compilers[2]; | |
| 136 | |
| 137 // These counters are used for assigning id's to each compilation | |
| 138 uint CompileBroker::_compilation_id = 0; | |
| 139 uint CompileBroker::_osr_compilation_id = 0; | |
| 140 | |
| 141 // Debugging information | |
| 142 int CompileBroker::_last_compile_type = no_compile; | |
| 143 int CompileBroker::_last_compile_level = CompLevel_none; | |
| 144 char CompileBroker::_last_method_compiled[CompileBroker::name_buffer_length]; | |
| 145 | |
| 146 // Performance counters | |
| 147 PerfCounter* CompileBroker::_perf_total_compilation = NULL; | |
| 148 PerfCounter* CompileBroker::_perf_osr_compilation = NULL; | |
| 149 PerfCounter* CompileBroker::_perf_standard_compilation = NULL; | |
| 150 | |
| 151 PerfCounter* CompileBroker::_perf_total_bailout_count = NULL; | |
| 152 PerfCounter* CompileBroker::_perf_total_invalidated_count = NULL; | |
| 153 PerfCounter* CompileBroker::_perf_total_compile_count = NULL; | |
| 154 PerfCounter* CompileBroker::_perf_total_osr_compile_count = NULL; | |
| 155 PerfCounter* CompileBroker::_perf_total_standard_compile_count = NULL; | |
| 156 | |
| 157 PerfCounter* CompileBroker::_perf_sum_osr_bytes_compiled = NULL; | |
| 158 PerfCounter* CompileBroker::_perf_sum_standard_bytes_compiled = NULL; | |
| 159 PerfCounter* CompileBroker::_perf_sum_nmethod_size = NULL; | |
| 160 PerfCounter* CompileBroker::_perf_sum_nmethod_code_size = NULL; | |
| 161 | |
| 162 PerfStringVariable* CompileBroker::_perf_last_method = NULL; | |
| 163 PerfStringVariable* CompileBroker::_perf_last_failed_method = NULL; | |
| 164 PerfStringVariable* CompileBroker::_perf_last_invalidated_method = NULL; | |
| 165 PerfVariable* CompileBroker::_perf_last_compile_type = NULL; | |
| 166 PerfVariable* CompileBroker::_perf_last_compile_size = NULL; | |
| 167 PerfVariable* CompileBroker::_perf_last_failed_type = NULL; | |
| 168 PerfVariable* CompileBroker::_perf_last_invalidated_type = NULL; | |
| 169 | |
| 170 // Timers and counters for generating statistics | |
| 171 elapsedTimer CompileBroker::_t_total_compilation; | |
| 172 elapsedTimer CompileBroker::_t_osr_compilation; | |
| 173 elapsedTimer CompileBroker::_t_standard_compilation; | |
| 174 | |
| 175 int CompileBroker::_total_bailout_count = 0; | |
| 176 int CompileBroker::_total_invalidated_count = 0; | |
| 177 int CompileBroker::_total_compile_count = 0; | |
| 178 int CompileBroker::_total_osr_compile_count = 0; | |
| 179 int CompileBroker::_total_standard_compile_count = 0; | |
| 180 | |
| 181 int CompileBroker::_sum_osr_bytes_compiled = 0; | |
| 182 int CompileBroker::_sum_standard_bytes_compiled = 0; | |
| 183 int CompileBroker::_sum_nmethod_size = 0; | |
| 184 int CompileBroker::_sum_nmethod_code_size = 0; | |
| 185 | |
| 10405 | 186 long CompileBroker::_peak_compilation_time = 0; |
| 187 | |
| 188 CompileQueue* CompileBroker::_c2_method_queue = NULL; | |
| 189 CompileQueue* CompileBroker::_c1_method_queue = NULL; | |
| 190 CompileTask* CompileBroker::_task_free_list = NULL; | |
| 0 | 191 |
| 192 GrowableArray<CompilerThread*>* CompileBroker::_method_threads = NULL; | |
| 193 | |
| 194 | |
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195 class CompilationLog : public StringEventLog { |
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196 public: |
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197 CompilationLog() : StringEventLog("Compilation events") { |
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198 } |
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199 |
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200 void log_compile(JavaThread* thread, CompileTask* task) { |
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201 StringLogMessage lm; |
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202 stringStream sstr = lm.stream(); |
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203 // msg.time_stamp().update_to(tty->time_stamp().ticks()); |
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204 task->print_compilation(&sstr, NULL, true); |
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205 log(thread, "%s", (const char*)lm); |
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206 } |
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207 |
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208 void log_nmethod(JavaThread* thread, nmethod* nm) { |
| 4944 | 209 log(thread, "nmethod %d%s " INTPTR_FORMAT " code ["INTPTR_FORMAT ", " INTPTR_FORMAT "]", |
| 210 nm->compile_id(), nm->is_osr_method() ? "%" : "", | |
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211 nm, nm->code_begin(), nm->code_end()); |
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212 } |
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213 |
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214 void log_failure(JavaThread* thread, CompileTask* task, const char* reason, const char* retry_message) { |
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215 StringLogMessage lm; |
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216 lm.print("%4d COMPILE SKIPPED: %s", task->compile_id(), reason); |
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217 if (retry_message != NULL) { |
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218 lm.append(" (%s)", retry_message); |
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219 } |
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220 lm.print("\n"); |
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221 log(thread, "%s", (const char*)lm); |
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222 } |
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223 }; |
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224 |
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225 static CompilationLog* _compilation_log = NULL; |
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226 |
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227 void compileBroker_init() { |
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228 if (LogEvents) { |
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229 _compilation_log = new CompilationLog(); |
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230 } |
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231 } |
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232 |
| 0 | 233 CompileTaskWrapper::CompileTaskWrapper(CompileTask* task) { |
| 234 CompilerThread* thread = CompilerThread::current(); | |
| 235 thread->set_task(task); | |
| 236 CompileLog* log = thread->log(); | |
| 237 if (log != NULL) task->log_task_start(log); | |
| 238 } | |
| 239 | |
| 240 CompileTaskWrapper::~CompileTaskWrapper() { | |
| 241 CompilerThread* thread = CompilerThread::current(); | |
| 242 CompileTask* task = thread->task(); | |
| 243 CompileLog* log = thread->log(); | |
| 244 if (log != NULL) task->log_task_done(log); | |
| 245 thread->set_task(NULL); | |
| 246 task->set_code_handle(NULL); | |
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247 thread->set_env(NULL); |
| 0 | 248 if (task->is_blocking()) { |
| 249 MutexLocker notifier(task->lock(), thread); | |
| 250 task->mark_complete(); | |
| 251 // Notify the waiting thread that the compilation has completed. | |
| 252 task->lock()->notify_all(); | |
| 253 } else { | |
| 254 task->mark_complete(); | |
| 255 | |
| 256 // By convention, the compiling thread is responsible for | |
| 257 // recycling a non-blocking CompileTask. | |
| 258 CompileBroker::free_task(task); | |
| 259 } | |
| 260 } | |
| 261 | |
| 262 | |
| 263 // ------------------------------------------------------------------ | |
| 264 // CompileTask::initialize | |
| 265 void CompileTask::initialize(int compile_id, | |
| 266 methodHandle method, | |
| 267 int osr_bci, | |
| 268 int comp_level, | |
| 269 methodHandle hot_method, | |
| 270 int hot_count, | |
| 271 const char* comment, | |
| 272 bool is_blocking) { | |
| 273 assert(!_lock->is_locked(), "bad locking"); | |
| 274 | |
| 275 _compile_id = compile_id; | |
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276 _method = method(); |
| 7409 | 277 _method_holder = JNIHandles::make_global(method->method_holder()->klass_holder()); |
| 0 | 278 _osr_bci = osr_bci; |
| 279 _is_blocking = is_blocking; | |
| 280 _comp_level = comp_level; | |
| 281 _num_inlined_bytecodes = 0; | |
| 282 | |
| 283 _is_complete = false; | |
| 284 _is_success = false; | |
| 285 _code_handle = NULL; | |
| 286 | |
| 287 _hot_method = NULL; | |
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288 _hot_method_holder = NULL; |
| 0 | 289 _hot_count = hot_count; |
| 290 _time_queued = 0; // tidy | |
| 291 _comment = comment; | |
| 292 | |
| 293 if (LogCompilation) { | |
| 294 _time_queued = os::elapsed_counter(); | |
| 295 if (hot_method.not_null()) { | |
| 296 if (hot_method == method) { | |
| 297 _hot_method = _method; | |
| 298 } else { | |
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299 _hot_method = hot_method(); |
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300 // only add loader or mirror if different from _method_holder |
| 7409 | 301 _hot_method_holder = JNIHandles::make_global(hot_method->method_holder()->klass_holder()); |
| 0 | 302 } |
| 303 } | |
| 304 } | |
| 305 | |
| 306 _next = NULL; | |
| 307 } | |
| 308 | |
| 309 // ------------------------------------------------------------------ | |
| 310 // CompileTask::code/set_code | |
| 311 nmethod* CompileTask::code() const { | |
| 312 if (_code_handle == NULL) return NULL; | |
| 313 return _code_handle->code(); | |
| 314 } | |
| 315 void CompileTask::set_code(nmethod* nm) { | |
| 316 if (_code_handle == NULL && nm == NULL) return; | |
| 317 guarantee(_code_handle != NULL, ""); | |
| 318 _code_handle->set_code(nm); | |
| 319 if (nm == NULL) _code_handle = NULL; // drop the handle also | |
| 320 } | |
| 321 | |
| 322 // ------------------------------------------------------------------ | |
| 323 // CompileTask::free | |
| 324 void CompileTask::free() { | |
| 325 set_code(NULL); | |
| 326 assert(!_lock->is_locked(), "Should not be locked when freed"); | |
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327 JNIHandles::destroy_global(_method_holder); |
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328 JNIHandles::destroy_global(_hot_method_holder); |
| 0 | 329 } |
| 330 | |
| 331 | |
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332 void CompileTask::mark_on_stack() { |
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333 // Mark these methods as something redefine classes cannot remove. |
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334 _method->set_on_stack(true); |
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335 if (_hot_method != NULL) { |
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336 _hot_method->set_on_stack(true); |
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337 } |
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338 } |
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339 |
| 0 | 340 // ------------------------------------------------------------------ |
| 341 // CompileTask::print | |
| 342 void CompileTask::print() { | |
| 343 tty->print("<CompileTask compile_id=%d ", _compile_id); | |
| 344 tty->print("method="); | |
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345 _method->print_name(tty); |
| 0 | 346 tty->print_cr(" osr_bci=%d is_blocking=%s is_complete=%s is_success=%s>", |
| 347 _osr_bci, bool_to_str(_is_blocking), | |
| 348 bool_to_str(_is_complete), bool_to_str(_is_success)); | |
| 349 } | |
| 350 | |
| 1783 | 351 |
| 0 | 352 // ------------------------------------------------------------------ |
| 353 // CompileTask::print_line_on_error | |
| 354 // | |
| 355 // This function is called by fatal error handler when the thread | |
| 356 // causing troubles is a compiler thread. | |
| 357 // | |
| 358 // Do not grab any lock, do not allocate memory. | |
| 359 // | |
| 360 // Otherwise it's the same as CompileTask::print_line() | |
| 361 // | |
| 362 void CompileTask::print_line_on_error(outputStream* st, char* buf, int buflen) { | |
| 363 // print compiler name | |
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364 st->print("%s:", CompileBroker::compiler_name(comp_level())); |
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365 print_compilation(st); |
| 0 | 366 } |
| 367 | |
| 368 // ------------------------------------------------------------------ | |
| 369 // CompileTask::print_line | |
| 370 void CompileTask::print_line() { | |
| 371 ttyLocker ttyl; // keep the following output all in one block | |
| 372 // print compiler name if requested | |
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373 if (CIPrintCompilerName) tty->print("%s:", CompileBroker::compiler_name(comp_level())); |
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374 print_compilation(); |
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375 } |
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376 |
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377 |
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378 // ------------------------------------------------------------------ |
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379 // CompileTask::print_compilation_impl |
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380 void CompileTask::print_compilation_impl(outputStream* st, Method* method, int compile_id, int comp_level, |
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381 bool is_osr_method, int osr_bci, bool is_blocking, |
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382 const char* msg, bool short_form) { |
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383 if (!short_form) { |
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384 st->print("%7d ", (int) st->time_stamp().milliseconds()); // print timestamp |
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385 } |
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386 st->print("%4d ", compile_id); // print compilation number |
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387 |
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388 // For unloaded methods the transition to zombie occurs after the |
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389 // method is cleared so it's impossible to report accurate |
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390 // information for that case. |
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391 bool is_synchronized = false; |
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392 bool has_exception_handler = false; |
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393 bool is_native = false; |
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394 if (method != NULL) { |
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395 is_synchronized = method->is_synchronized(); |
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396 has_exception_handler = method->has_exception_handler(); |
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397 is_native = method->is_native(); |
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398 } |
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399 // method attributes |
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400 const char compile_type = is_osr_method ? '%' : ' '; |
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401 const char sync_char = is_synchronized ? 's' : ' '; |
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402 const char exception_char = has_exception_handler ? '!' : ' '; |
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403 const char blocking_char = is_blocking ? 'b' : ' '; |
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404 const char native_char = is_native ? 'n' : ' '; |
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405 |
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406 // print method attributes |
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407 st->print("%c%c%c%c%c ", compile_type, sync_char, exception_char, blocking_char, native_char); |
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408 |
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409 if (TieredCompilation) { |
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410 if (comp_level != -1) st->print("%d ", comp_level); |
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411 else st->print("- "); |
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412 } |
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413 st->print(" "); // more indent |
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414 |
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415 if (method == NULL) { |
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416 st->print("(method)"); |
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417 } else { |
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418 method->print_short_name(st); |
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419 if (is_osr_method) { |
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420 st->print(" @ %d", osr_bci); |
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421 } |
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422 if (method->is_native()) |
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423 st->print(" (native)"); |
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424 else |
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425 st->print(" (%d bytes)", method->code_size()); |
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426 } |
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427 |
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428 if (msg != NULL) { |
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429 st->print(" %s", msg); |
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430 } |
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431 if (!short_form) { |
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432 st->cr(); |
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433 } |
| 0 | 434 } |
| 435 | |
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436 // ------------------------------------------------------------------ |
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437 // CompileTask::print_inlining |
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438 void CompileTask::print_inlining(outputStream* st, ciMethod* method, int inline_level, int bci, const char* msg) { |
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439 // 1234567 |
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440 st->print(" "); // print timestamp |
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441 // 1234 |
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442 st->print(" "); // print compilation number |
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443 |
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444 // method attributes |
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445 if (method->is_loaded()) { |
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446 const char sync_char = method->is_synchronized() ? 's' : ' '; |
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447 const char exception_char = method->has_exception_handlers() ? '!' : ' '; |
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448 const char monitors_char = method->has_monitor_bytecodes() ? 'm' : ' '; |
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449 |
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450 // print method attributes |
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451 st->print(" %c%c%c ", sync_char, exception_char, monitors_char); |
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452 } else { |
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453 // %s!bn |
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454 st->print(" "); // print method attributes |
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455 } |
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456 |
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457 if (TieredCompilation) { |
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458 st->print(" "); |
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459 } |
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460 st->print(" "); // more indent |
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461 st->print(" "); // initial inlining indent |
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462 |
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463 for (int i = 0; i < inline_level; i++) st->print(" "); |
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464 |
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465 st->print("@ %d ", bci); // print bci |
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466 method->print_short_name(st); |
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467 if (method->is_loaded()) |
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468 st->print(" (%d bytes)", method->code_size()); |
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469 else |
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470 st->print(" (not loaded)"); |
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471 |
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472 if (msg != NULL) { |
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473 st->print(" %s", msg); |
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474 } |
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475 st->cr(); |
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476 } |
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477 |
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478 // ------------------------------------------------------------------ |
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479 // CompileTask::print_inline_indent |
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480 void CompileTask::print_inline_indent(int inline_level, outputStream* st) { |
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481 // 1234567 |
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482 st->print(" "); // print timestamp |
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483 // 1234 |
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484 st->print(" "); // print compilation number |
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485 // %s!bn |
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486 st->print(" "); // print method attributes |
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487 if (TieredCompilation) { |
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488 st->print(" "); |
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489 } |
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490 st->print(" "); // more indent |
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491 st->print(" "); // initial inlining indent |
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492 for (int i = 0; i < inline_level; i++) st->print(" "); |
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493 } |
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494 |
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495 // ------------------------------------------------------------------ |
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496 // CompileTask::print_compilation |
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497 void CompileTask::print_compilation(outputStream* st, const char* msg, bool short_form) { |
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498 bool is_osr_method = osr_bci() != InvocationEntryBci; |
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499 print_compilation_impl(st, method(), compile_id(), comp_level(), is_osr_method, osr_bci(), is_blocking(), msg, short_form); |
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500 } |
| 0 | 501 |
| 502 // ------------------------------------------------------------------ | |
| 503 // CompileTask::log_task | |
| 504 void CompileTask::log_task(xmlStream* log) { | |
| 505 Thread* thread = Thread::current(); | |
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506 methodHandle method(thread, this->method()); |
| 0 | 507 ResourceMark rm(thread); |
| 508 | |
| 509 // <task id='9' method='M' osr_bci='X' level='1' blocking='1' stamp='1.234'> | |
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510 log->print(" compile_id='%d'", _compile_id); |
| 0 | 511 if (_osr_bci != CompileBroker::standard_entry_bci) { |
| 512 log->print(" compile_kind='osr'"); // same as nmethod::compile_kind | |
| 513 } // else compile_kind='c2c' | |
| 514 if (!method.is_null()) log->method(method); | |
| 515 if (_osr_bci != CompileBroker::standard_entry_bci) { | |
| 516 log->print(" osr_bci='%d'", _osr_bci); | |
| 517 } | |
| 518 if (_comp_level != CompLevel_highest_tier) { | |
| 519 log->print(" level='%d'", _comp_level); | |
| 520 } | |
| 521 if (_is_blocking) { | |
| 522 log->print(" blocking='1'"); | |
| 523 } | |
| 524 log->stamp(); | |
| 525 } | |
| 526 | |
| 527 | |
| 528 // ------------------------------------------------------------------ | |
| 529 // CompileTask::log_task_queued | |
| 530 void CompileTask::log_task_queued() { | |
| 531 Thread* thread = Thread::current(); | |
| 532 ttyLocker ttyl; | |
| 533 ResourceMark rm(thread); | |
| 534 | |
| 535 xtty->begin_elem("task_queued"); | |
| 536 log_task(xtty); | |
| 537 if (_comment != NULL) { | |
| 538 xtty->print(" comment='%s'", _comment); | |
| 539 } | |
| 540 if (_hot_method != NULL) { | |
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541 methodHandle hot(thread, _hot_method); |
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542 methodHandle method(thread, _method); |
| 0 | 543 if (hot() != method()) { |
| 544 xtty->method(hot); | |
| 545 } | |
| 546 } | |
| 547 if (_hot_count != 0) { | |
| 548 xtty->print(" hot_count='%d'", _hot_count); | |
| 549 } | |
| 550 xtty->end_elem(); | |
| 551 } | |
| 552 | |
| 553 | |
| 554 // ------------------------------------------------------------------ | |
| 555 // CompileTask::log_task_start | |
| 556 void CompileTask::log_task_start(CompileLog* log) { | |
| 557 log->begin_head("task"); | |
| 558 log_task(log); | |
| 559 log->end_head(); | |
| 560 } | |
| 561 | |
| 562 | |
| 563 // ------------------------------------------------------------------ | |
| 564 // CompileTask::log_task_done | |
| 565 void CompileTask::log_task_done(CompileLog* log) { | |
| 566 Thread* thread = Thread::current(); | |
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567 methodHandle method(thread, this->method()); |
| 0 | 568 ResourceMark rm(thread); |
| 569 | |
| 570 // <task_done ... stamp='1.234'> </task> | |
| 571 nmethod* nm = code(); | |
| 572 log->begin_elem("task_done success='%d' nmsize='%d' count='%d'", | |
| 1748 | 573 _is_success, nm == NULL ? 0 : nm->content_size(), |
| 0 | 574 method->invocation_count()); |
| 575 int bec = method->backedge_count(); | |
| 576 if (bec != 0) log->print(" backedge_count='%d'", bec); | |
| 577 // Note: "_is_complete" is about to be set, but is not. | |
| 578 if (_num_inlined_bytecodes != 0) { | |
| 579 log->print(" inlined_bytes='%d'", _num_inlined_bytecodes); | |
| 580 } | |
| 581 log->stamp(); | |
| 582 log->end_elem(); | |
| 583 log->tail("task"); | |
| 584 log->clear_identities(); // next task will have different CI | |
| 585 if (log->unflushed_count() > 2000) { | |
| 586 log->flush(); | |
| 587 } | |
| 588 log->mark_file_end(); | |
| 589 } | |
| 590 | |
| 591 | |
| 592 | |
| 593 // ------------------------------------------------------------------ | |
| 594 // CompileQueue::add | |
| 595 // | |
| 596 // Add a CompileTask to a CompileQueue | |
| 597 void CompileQueue::add(CompileTask* task) { | |
| 598 assert(lock()->owned_by_self(), "must own lock"); | |
| 599 | |
| 600 task->set_next(NULL); | |
| 1783 | 601 task->set_prev(NULL); |
| 0 | 602 |
| 603 if (_last == NULL) { | |
| 604 // The compile queue is empty. | |
| 605 assert(_first == NULL, "queue is empty"); | |
| 606 _first = task; | |
| 607 _last = task; | |
| 608 } else { | |
| 609 // Append the task to the queue. | |
| 610 assert(_last->next() == NULL, "not last"); | |
| 611 _last->set_next(task); | |
| 1783 | 612 task->set_prev(_last); |
| 0 | 613 _last = task; |
| 614 } | |
| 1783 | 615 ++_size; |
| 0 | 616 |
| 617 // Mark the method as being in the compile queue. | |
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618 task->method()->set_queued_for_compilation(); |
| 0 | 619 |
| 620 if (CIPrintCompileQueue) { | |
| 621 print(); | |
| 622 } | |
| 623 | |
| 624 if (LogCompilation && xtty != NULL) { | |
| 625 task->log_task_queued(); | |
| 626 } | |
| 627 | |
| 628 // Notify CompilerThreads that a task is available. | |
| 1783 | 629 lock()->notify_all(); |
| 0 | 630 } |
| 631 | |
| 632 // ------------------------------------------------------------------ | |
| 633 // CompileQueue::get | |
| 634 // | |
| 635 // Get the next CompileTask from a CompileQueue | |
| 636 CompileTask* CompileQueue::get() { | |
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637 NMethodSweeper::possibly_sweep(); |
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638 |
| 0 | 639 MutexLocker locker(lock()); |
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640 // If _first is NULL we have no more compile jobs. There are two reasons for |
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641 // having no compile jobs: First, we compiled everything we wanted. Second, |
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642 // we ran out of code cache so compilation has been disabled. In the latter |
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643 // case we perform code cache sweeps to free memory such that we can re-enable |
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644 // compilation. |
| 0 | 645 while (_first == NULL) { |
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646 if (UseCodeCacheFlushing && !CompileBroker::should_compile_new_jobs()) { |
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647 // Wait a certain amount of time to possibly do another sweep. |
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648 // We must wait until stack scanning has happened so that we can |
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649 // transition a method's state from 'not_entrant' to 'zombie'. |
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650 long wait_time = NmethodSweepCheckInterval * 1000; |
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651 if (FLAG_IS_DEFAULT(NmethodSweepCheckInterval)) { |
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652 // Only one thread at a time can do sweeping. Scale the |
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653 // wait time according to the number of compiler threads. |
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654 // As a result, the next sweep is likely to happen every 100ms |
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655 // with an arbitrary number of threads that do sweeping. |
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656 wait_time = 100 * CICompilerCount; |
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657 } |
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658 bool timeout = lock()->wait(!Mutex::_no_safepoint_check_flag, wait_time); |
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659 if (timeout) { |
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660 MutexUnlocker ul(lock()); |
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661 NMethodSweeper::possibly_sweep(); |
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662 } |
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663 } else { |
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664 // If there are no compilation tasks and we can compile new jobs |
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665 // (i.e., there is enough free space in the code cache) there is |
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666 // no need to invoke the sweeper. As a result, the hotness of methods |
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667 // remains unchanged. This behavior is desired, since we want to keep |
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668 // the stable state, i.e., we do not want to evict methods from the |
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669 // code cache if it is unnecessary. |
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670 lock()->wait(); |
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671 } |
| 0 | 672 } |
| 1783 | 673 CompileTask* task = CompilationPolicy::policy()->select_task(this); |
| 674 remove(task); | |
| 675 return task; | |
| 676 } | |
| 0 | 677 |
| 1783 | 678 void CompileQueue::remove(CompileTask* task) |
| 679 { | |
| 680 assert(lock()->owned_by_self(), "must own lock"); | |
| 681 if (task->prev() != NULL) { | |
| 682 task->prev()->set_next(task->next()); | |
| 683 } else { | |
| 684 // max is the first element | |
| 685 assert(task == _first, "Sanity"); | |
| 686 _first = task->next(); | |
| 0 | 687 } |
| 688 | |
| 1783 | 689 if (task->next() != NULL) { |
| 690 task->next()->set_prev(task->prev()); | |
| 691 } else { | |
| 692 // max is the last element | |
| 693 assert(task == _last, "Sanity"); | |
| 694 _last = task->prev(); | |
| 695 } | |
| 696 --_size; | |
| 0 | 697 } |
| 698 | |
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699 // methods in the compile queue need to be marked as used on the stack |
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700 // so that they don't get reclaimed by Redefine Classes |
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701 void CompileQueue::mark_on_stack() { |
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702 CompileTask* task = _first; |
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703 while (task != NULL) { |
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704 task->mark_on_stack(); |
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705 task = task->next(); |
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706 } |
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707 } |
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708 |
| 0 | 709 // ------------------------------------------------------------------ |
| 710 // CompileQueue::print | |
| 711 void CompileQueue::print() { | |
| 712 tty->print_cr("Contents of %s", name()); | |
| 713 tty->print_cr("----------------------"); | |
| 714 CompileTask* task = _first; | |
| 715 while (task != NULL) { | |
| 716 task->print_line(); | |
| 717 task = task->next(); | |
| 718 } | |
| 719 tty->print_cr("----------------------"); | |
| 720 } | |
| 721 | |
| 722 CompilerCounters::CompilerCounters(const char* thread_name, int instance, TRAPS) { | |
| 723 | |
| 724 _current_method[0] = '\0'; | |
| 725 _compile_type = CompileBroker::no_compile; | |
| 726 | |
| 727 if (UsePerfData) { | |
| 728 ResourceMark rm; | |
| 729 | |
| 730 // create the thread instance name space string - don't create an | |
| 731 // instance subspace if instance is -1 - keeps the adapterThread | |
| 732 // counters from having a ".0" namespace. | |
| 733 const char* thread_i = (instance == -1) ? thread_name : | |
| 734 PerfDataManager::name_space(thread_name, instance); | |
| 735 | |
| 736 | |
| 737 char* name = PerfDataManager::counter_name(thread_i, "method"); | |
| 738 _perf_current_method = | |
| 739 PerfDataManager::create_string_variable(SUN_CI, name, | |
| 740 cmname_buffer_length, | |
| 741 _current_method, CHECK); | |
| 742 | |
| 743 name = PerfDataManager::counter_name(thread_i, "type"); | |
| 744 _perf_compile_type = PerfDataManager::create_variable(SUN_CI, name, | |
| 745 PerfData::U_None, | |
| 746 (jlong)_compile_type, | |
| 747 CHECK); | |
| 748 | |
| 749 name = PerfDataManager::counter_name(thread_i, "time"); | |
| 750 _perf_time = PerfDataManager::create_counter(SUN_CI, name, | |
| 751 PerfData::U_Ticks, CHECK); | |
| 752 | |
| 753 name = PerfDataManager::counter_name(thread_i, "compiles"); | |
| 754 _perf_compiles = PerfDataManager::create_counter(SUN_CI, name, | |
| 755 PerfData::U_Events, CHECK); | |
| 756 } | |
| 757 } | |
| 758 | |
| 759 // ------------------------------------------------------------------ | |
| 760 // CompileBroker::compilation_init | |
| 761 // | |
| 762 // Initialize the Compilation object | |
| 763 void CompileBroker::compilation_init() { | |
| 764 _last_method_compiled[0] = '\0'; | |
| 765 | |
| 1970 | 766 #ifndef SHARK |
| 0 | 767 // Set the interface to the current compiler(s). |
| 1783 | 768 int c1_count = CompilationPolicy::policy()->compiler_count(CompLevel_simple); |
| 769 int c2_count = CompilationPolicy::policy()->compiler_count(CompLevel_full_optimization); | |
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770 |
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771 #ifdef GRAAL |
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772 GraalCompiler* graal = new GraalCompiler(); |
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773 #endif |
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774 |
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775 #if defined(GRAALVM) |
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776 _compilers[0] = graal; |
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777 c1_count = 0; |
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778 c2_count = 0; |
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779 #elif defined(COMPILER1) |
| 1783 | 780 if (c1_count > 0) { |
| 781 _compilers[0] = new Compiler(); | |
| 782 } | |
| 0 | 783 #endif // COMPILER1 |
| 784 | |
| 785 #ifdef COMPILER2 | |
| 1783 | 786 if (c2_count > 0) { |
| 787 _compilers[1] = new C2Compiler(); | |
| 788 } | |
| 0 | 789 #endif // COMPILER2 |
| 790 | |
| 1970 | 791 #else // SHARK |
| 792 int c1_count = 0; | |
| 793 int c2_count = 1; | |
| 794 | |
| 795 _compilers[1] = new SharkCompiler(); | |
| 796 #endif // SHARK | |
| 1692 | 797 |
| 0 | 798 // Initialize the CompileTask free list |
| 799 _task_free_list = NULL; | |
| 800 | |
| 801 // Start the CompilerThreads | |
| 1783 | 802 init_compiler_threads(c1_count, c2_count); |
| 0 | 803 // totalTime performance counter is always created as it is required |
| 804 // by the implementation of java.lang.management.CompilationMBean. | |
| 805 { | |
| 806 EXCEPTION_MARK; | |
| 807 _perf_total_compilation = | |
| 808 PerfDataManager::create_counter(JAVA_CI, "totalTime", | |
| 809 PerfData::U_Ticks, CHECK); | |
| 810 } | |
| 811 | |
| 812 | |
| 813 if (UsePerfData) { | |
| 814 | |
| 815 EXCEPTION_MARK; | |
| 816 | |
| 817 // create the jvmstat performance counters | |
| 818 _perf_osr_compilation = | |
| 819 PerfDataManager::create_counter(SUN_CI, "osrTime", | |
| 820 PerfData::U_Ticks, CHECK); | |
| 821 | |
| 822 _perf_standard_compilation = | |
| 823 PerfDataManager::create_counter(SUN_CI, "standardTime", | |
| 824 PerfData::U_Ticks, CHECK); | |
| 825 | |
| 826 _perf_total_bailout_count = | |
| 827 PerfDataManager::create_counter(SUN_CI, "totalBailouts", | |
| 828 PerfData::U_Events, CHECK); | |
| 829 | |
| 830 _perf_total_invalidated_count = | |
| 831 PerfDataManager::create_counter(SUN_CI, "totalInvalidates", | |
| 832 PerfData::U_Events, CHECK); | |
| 833 | |
| 834 _perf_total_compile_count = | |
| 835 PerfDataManager::create_counter(SUN_CI, "totalCompiles", | |
| 836 PerfData::U_Events, CHECK); | |
| 837 _perf_total_osr_compile_count = | |
| 838 PerfDataManager::create_counter(SUN_CI, "osrCompiles", | |
| 839 PerfData::U_Events, CHECK); | |
| 840 | |
| 841 _perf_total_standard_compile_count = | |
| 842 PerfDataManager::create_counter(SUN_CI, "standardCompiles", | |
| 843 PerfData::U_Events, CHECK); | |
| 844 | |
| 845 _perf_sum_osr_bytes_compiled = | |
| 846 PerfDataManager::create_counter(SUN_CI, "osrBytes", | |
| 847 PerfData::U_Bytes, CHECK); | |
| 848 | |
| 849 _perf_sum_standard_bytes_compiled = | |
| 850 PerfDataManager::create_counter(SUN_CI, "standardBytes", | |
| 851 PerfData::U_Bytes, CHECK); | |
| 852 | |
| 853 _perf_sum_nmethod_size = | |
| 854 PerfDataManager::create_counter(SUN_CI, "nmethodSize", | |
| 855 PerfData::U_Bytes, CHECK); | |
| 856 | |
| 857 _perf_sum_nmethod_code_size = | |
| 858 PerfDataManager::create_counter(SUN_CI, "nmethodCodeSize", | |
| 859 PerfData::U_Bytes, CHECK); | |
| 860 | |
| 861 _perf_last_method = | |
| 862 PerfDataManager::create_string_variable(SUN_CI, "lastMethod", | |
| 863 CompilerCounters::cmname_buffer_length, | |
| 864 "", CHECK); | |
| 865 | |
| 866 _perf_last_failed_method = | |
| 867 PerfDataManager::create_string_variable(SUN_CI, "lastFailedMethod", | |
| 868 CompilerCounters::cmname_buffer_length, | |
| 869 "", CHECK); | |
| 870 | |
| 871 _perf_last_invalidated_method = | |
| 872 PerfDataManager::create_string_variable(SUN_CI, "lastInvalidatedMethod", | |
| 873 CompilerCounters::cmname_buffer_length, | |
| 874 "", CHECK); | |
| 875 | |
| 876 _perf_last_compile_type = | |
| 877 PerfDataManager::create_variable(SUN_CI, "lastType", | |
| 878 PerfData::U_None, | |
| 879 (jlong)CompileBroker::no_compile, | |
| 880 CHECK); | |
| 881 | |
| 882 _perf_last_compile_size = | |
| 883 PerfDataManager::create_variable(SUN_CI, "lastSize", | |
| 884 PerfData::U_Bytes, | |
| 885 (jlong)CompileBroker::no_compile, | |
| 886 CHECK); | |
| 887 | |
| 888 | |
| 889 _perf_last_failed_type = | |
| 890 PerfDataManager::create_variable(SUN_CI, "lastFailedType", | |
| 891 PerfData::U_None, | |
| 892 (jlong)CompileBroker::no_compile, | |
| 893 CHECK); | |
| 894 | |
| 895 _perf_last_invalidated_type = | |
| 896 PerfDataManager::create_variable(SUN_CI, "lastInvalidatedType", | |
| 897 PerfData::U_None, | |
| 898 (jlong)CompileBroker::no_compile, | |
| 899 CHECK); | |
| 900 } | |
| 901 | |
| 902 _initialized = true; | |
| 903 } | |
| 904 | |
| 905 | |
| 906 | |
| 907 // ------------------------------------------------------------------ | |
| 908 // CompileBroker::make_compiler_thread | |
| 909 CompilerThread* CompileBroker::make_compiler_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, TRAPS) { | |
| 910 CompilerThread* compiler_thread = NULL; | |
| 911 | |
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912 Klass* k = |
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913 SystemDictionary::resolve_or_fail(vmSymbols::java_lang_Thread(), |
| 0 | 914 true, CHECK_0); |
| 915 instanceKlassHandle klass (THREAD, k); | |
| 916 instanceHandle thread_oop = klass->allocate_instance_handle(CHECK_0); | |
| 917 Handle string = java_lang_String::create_from_str(name, CHECK_0); | |
| 918 | |
| 919 // Initialize thread_oop to put it into the system threadGroup | |
| 920 Handle thread_group (THREAD, Universe::system_thread_group()); | |
| 921 JavaValue result(T_VOID); | |
| 922 JavaCalls::call_special(&result, thread_oop, | |
| 923 klass, | |
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924 vmSymbols::object_initializer_name(), |
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925 vmSymbols::threadgroup_string_void_signature(), |
| 0 | 926 thread_group, |
| 927 string, | |
| 928 CHECK_0); | |
| 929 | |
| 930 { | |
| 931 MutexLocker mu(Threads_lock, THREAD); | |
| 932 compiler_thread = new CompilerThread(queue, counters); | |
| 933 // At this point the new CompilerThread data-races with this startup | |
| 934 // thread (which I believe is the primoridal thread and NOT the VM | |
| 935 // thread). This means Java bytecodes being executed at startup can | |
| 936 // queue compile jobs which will run at whatever default priority the | |
| 937 // newly created CompilerThread runs at. | |
| 938 | |
| 939 | |
| 940 // At this point it may be possible that no osthread was created for the | |
| 941 // JavaThread due to lack of memory. We would have to throw an exception | |
| 942 // in that case. However, since this must work and we do not allow | |
| 943 // exceptions anyway, check and abort if this fails. | |
| 944 | |
| 945 if (compiler_thread == NULL || compiler_thread->osthread() == NULL){ | |
| 946 vm_exit_during_initialization("java.lang.OutOfMemoryError", | |
| 947 "unable to create new native thread"); | |
| 948 } | |
| 949 | |
| 950 java_lang_Thread::set_thread(thread_oop(), compiler_thread); | |
| 951 | |
| 952 // Note that this only sets the JavaThread _priority field, which by | |
| 953 // definition is limited to Java priorities and not OS priorities. | |
| 954 // The os-priority is set in the CompilerThread startup code itself | |
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955 |
| 0 | 956 java_lang_Thread::set_priority(thread_oop(), NearMaxPriority); |
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957 |
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958 // Note that we cannot call os::set_priority because it expects Java |
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959 // priorities and we are *explicitly* using OS priorities so that it's |
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960 // possible to set the compiler thread priority higher than any Java |
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961 // thread. |
| 0 | 962 |
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963 int native_prio = CompilerThreadPriority; |
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964 if (native_prio == -1) { |
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965 if (UseCriticalCompilerThreadPriority) { |
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966 native_prio = os::java_to_os_priority[CriticalPriority]; |
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967 } else { |
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968 native_prio = os::java_to_os_priority[NearMaxPriority]; |
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969 } |
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970 } |
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971 os::set_native_priority(compiler_thread, native_prio); |
| 0 | 972 |
| 973 java_lang_Thread::set_daemon(thread_oop()); | |
| 974 | |
| 975 compiler_thread->set_threadObj(thread_oop()); | |
| 976 Threads::add(compiler_thread); | |
| 977 Thread::start(compiler_thread); | |
| 978 } | |
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979 |
| 0 | 980 // Let go of Threads_lock before yielding |
| 981 os::yield(); // make sure that the compiler thread is started early (especially helpful on SOLARIS) | |
| 982 | |
| 983 return compiler_thread; | |
| 984 } | |
| 985 | |
| 986 | |
| 987 // ------------------------------------------------------------------ | |
| 988 // CompileBroker::init_compiler_threads | |
| 989 // | |
| 990 // Initialize the compilation queue | |
| 1783 | 991 void CompileBroker::init_compiler_threads(int c1_compiler_count, int c2_compiler_count) { |
| 0 | 992 EXCEPTION_MARK; |
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993 #if !defined(ZERO) && !defined(SHARK) && !defined(GRAALVM) |
| 1783 | 994 assert(c2_compiler_count > 0 || c1_compiler_count > 0, "No compilers?"); |
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995 #endif // !ZERO && !SHARK && !GRAALVM |
| 1783 | 996 if (c2_compiler_count > 0) { |
| 997 _c2_method_queue = new CompileQueue("C2MethodQueue", MethodCompileQueue_lock); | |
| 998 } | |
| 999 if (c1_compiler_count > 0) { | |
| 1000 _c1_method_queue = new CompileQueue("C1MethodQueue", MethodCompileQueue_lock); | |
| 1001 } | |
| 0 | 1002 |
| 1783 | 1003 int compiler_count = c1_compiler_count + c2_compiler_count; |
| 1004 | |
| 0 | 1005 _method_threads = |
| 6197 | 1006 new (ResourceObj::C_HEAP, mtCompiler) GrowableArray<CompilerThread*>(compiler_count, true); |
| 0 | 1007 |
| 1008 char name_buffer[256]; | |
| 1783 | 1009 for (int i = 0; i < c2_compiler_count; i++) { |
| 0 | 1010 // Create a name for our thread. |
| 1783 | 1011 sprintf(name_buffer, "C2 CompilerThread%d", i); |
| 0 | 1012 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK); |
| 1783 | 1013 CompilerThread* new_thread = make_compiler_thread(name_buffer, _c2_method_queue, counters, CHECK); |
| 0 | 1014 _method_threads->append(new_thread); |
| 1015 } | |
| 1783 | 1016 |
| 1017 for (int i = c2_compiler_count; i < compiler_count; i++) { | |
| 1018 // Create a name for our thread. | |
| 1019 sprintf(name_buffer, "C1 CompilerThread%d", i); | |
| 1020 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK); | |
| 1021 CompilerThread* new_thread = make_compiler_thread(name_buffer, _c1_method_queue, counters, CHECK); | |
| 1022 _method_threads->append(new_thread); | |
| 1023 } | |
| 1024 | |
| 0 | 1025 if (UsePerfData) { |
| 1026 PerfDataManager::create_constant(SUN_CI, "threads", PerfData::U_Bytes, | |
| 1027 compiler_count, CHECK); | |
| 1028 } | |
| 1029 } | |
| 1030 | |
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1031 |
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1032 // Set the methods on the stack as on_stack so that redefine classes doesn't |
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1033 // reclaim them |
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1034 void CompileBroker::mark_on_stack() { |
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1035 if (_c2_method_queue != NULL) { |
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1036 _c2_method_queue->mark_on_stack(); |
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1037 } |
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1038 if (_c1_method_queue != NULL) { |
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1039 _c1_method_queue->mark_on_stack(); |
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1040 } |
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1041 } |
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1042 |
| 0 | 1043 // ------------------------------------------------------------------ |
| 1044 // CompileBroker::is_idle | |
| 1045 bool CompileBroker::is_idle() { | |
| 1783 | 1046 if (_c2_method_queue != NULL && !_c2_method_queue->is_empty()) { |
| 1047 return false; | |
| 1048 } else if (_c1_method_queue != NULL && !_c1_method_queue->is_empty()) { | |
| 0 | 1049 return false; |
| 1050 } else { | |
| 1051 int num_threads = _method_threads->length(); | |
| 1052 for (int i=0; i<num_threads; i++) { | |
| 1053 if (_method_threads->at(i)->task() != NULL) { | |
| 1054 return false; | |
| 1055 } | |
| 1056 } | |
| 1057 } | |
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1058 // No pending or active compilations. |
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1059 return true; |
| 0 | 1060 } |
| 1061 | |
| 1062 | |
| 1063 // ------------------------------------------------------------------ | |
| 1064 // CompileBroker::compile_method | |
| 1065 // | |
| 1066 // Request compilation of a method. | |
| 1067 void CompileBroker::compile_method_base(methodHandle method, | |
| 1068 int osr_bci, | |
| 1069 int comp_level, | |
| 1070 methodHandle hot_method, | |
| 1071 int hot_count, | |
| 1072 const char* comment, | |
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1073 Thread* thread) { |
| 0 | 1074 // do nothing if compiler thread(s) is not available |
| 1075 if (!_initialized ) { | |
| 1076 return; | |
| 1077 } | |
| 1078 | |
| 1079 guarantee(!method->is_abstract(), "cannot compile abstract methods"); | |
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1080 assert(method->method_holder()->oop_is_instance(), |
| 0 | 1081 "sanity check"); |
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1082 assert(!method->method_holder()->is_not_initialized(), |
| 0 | 1083 "method holder must be initialized"); |
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1084 assert(!method->is_method_handle_intrinsic(), "do not enqueue these guys"); |
| 0 | 1085 |
| 1086 if (CIPrintRequests) { | |
| 1087 tty->print("request: "); | |
| 1088 method->print_short_name(tty); | |
| 1089 if (osr_bci != InvocationEntryBci) { | |
| 1090 tty->print(" osr_bci: %d", osr_bci); | |
| 1091 } | |
| 1092 tty->print(" comment: %s count: %d", comment, hot_count); | |
| 1093 if (!hot_method.is_null()) { | |
| 1094 tty->print(" hot: "); | |
| 1095 if (hot_method() != method()) { | |
| 1096 hot_method->print_short_name(tty); | |
| 1097 } else { | |
| 1098 tty->print("yes"); | |
| 1099 } | |
| 1100 } | |
| 1101 tty->cr(); | |
| 1102 } | |
| 1103 | |
| 1104 // A request has been made for compilation. Before we do any | |
| 1105 // real work, check to see if the method has been compiled | |
| 1106 // in the meantime with a definitive result. | |
| 1107 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
| 1108 return; | |
| 1109 } | |
| 1110 | |
| 2403 | 1111 #ifndef PRODUCT |
| 1112 if (osr_bci != -1 && !FLAG_IS_DEFAULT(OSROnlyBCI)) { | |
| 1113 if ((OSROnlyBCI > 0) ? (OSROnlyBCI != osr_bci) : (-OSROnlyBCI == osr_bci)) { | |
| 1114 // Positive OSROnlyBCI means only compile that bci. Negative means don't compile that BCI. | |
| 1115 return; | |
| 1116 } | |
| 1117 } | |
| 1118 #endif | |
| 1783 | 1119 |
| 0 | 1120 // If this method is already in the compile queue, then |
| 1121 // we do not block the current thread. | |
| 1122 if (compilation_is_in_queue(method, osr_bci)) { | |
| 1123 // We may want to decay our counter a bit here to prevent | |
| 1124 // multiple denied requests for compilation. This is an | |
| 1125 // open compilation policy issue. Note: The other possibility, | |
| 1126 // in the case that this is a blocking compile request, is to have | |
| 1127 // all subsequent blocking requesters wait for completion of | |
| 1128 // ongoing compiles. Note that in this case we'll need a protocol | |
| 1129 // for freeing the associated compile tasks. [Or we could have | |
| 1130 // a single static monitor on which all these waiters sleep.] | |
| 1131 return; | |
| 1132 } | |
| 1133 | |
|
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1134 // If the requesting thread is holding the pending list lock |
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1135 // then we just return. We can't risk blocking while holding |
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1136 // the pending list lock or a 3-way deadlock may occur |
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1137 // between the reference handler thread, a GC (instigated |
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1138 // by a compiler thread), and compiled method registration. |
|
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1139 if (InstanceRefKlass::owns_pending_list_lock(JavaThread::current())) { |
|
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1140 return; |
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1141 } |
|
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|
1142 #ifdef GRAALVM |
|
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1143 if (!JavaThread::current()->is_compiling()) { |
|
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1144 GraalCompiler::instance()->compile_method(method, osr_bci, is_compile_blocking(method, osr_bci)); |
|
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1145 } else { |
|
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1146 // Recursive compile request => ignore. |
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1147 } |
|
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1148 #else |
|
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1149 |
| 0 | 1150 // Outputs from the following MutexLocker block: |
| 1151 CompileTask* task = NULL; | |
| 1152 bool blocking = false; | |
| 1783 | 1153 CompileQueue* queue = compile_queue(comp_level); |
| 0 | 1154 |
| 1155 // Acquire our lock. | |
| 1156 { | |
|
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1157 MutexLocker locker(queue->lock(), thread); |
| 0 | 1158 |
| 1159 // Make sure the method has not slipped into the queues since | |
| 1160 // last we checked; note that those checks were "fast bail-outs". | |
| 1161 // Here we need to be more careful, see 14012000 below. | |
| 1162 if (compilation_is_in_queue(method, osr_bci)) { | |
| 1163 return; | |
| 1164 } | |
| 1165 | |
| 1166 // We need to check again to see if the compilation has | |
| 1167 // completed. A previous compilation may have registered | |
| 1168 // some result. | |
| 1169 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
| 1170 return; | |
| 1171 } | |
| 1172 | |
| 1173 // We now know that this compilation is not pending, complete, | |
| 1174 // or prohibited. Assign a compile_id to this compilation | |
| 1175 // and check to see if it is in our [Start..Stop) range. | |
| 1176 uint compile_id = assign_compile_id(method, osr_bci); | |
| 1177 if (compile_id == 0) { | |
| 1178 // The compilation falls outside the allowed range. | |
| 1179 return; | |
| 1180 } | |
| 1181 | |
| 1182 // Should this thread wait for completion of the compile? | |
| 1183 blocking = is_compile_blocking(method, osr_bci); | |
| 1184 | |
| 1185 // We will enter the compilation in the queue. | |
| 1186 // 14012000: Note that this sets the queued_for_compile bits in | |
| 1187 // the target method. We can now reason that a method cannot be | |
| 1188 // queued for compilation more than once, as follows: | |
| 1189 // Before a thread queues a task for compilation, it first acquires | |
| 1190 // the compile queue lock, then checks if the method's queued bits | |
| 1191 // are set or it has already been compiled. Thus there can not be two | |
| 1192 // instances of a compilation task for the same method on the | |
| 1193 // compilation queue. Consider now the case where the compilation | |
| 1194 // thread has already removed a task for that method from the queue | |
| 1195 // and is in the midst of compiling it. In this case, the | |
| 1196 // queued_for_compile bits must be set in the method (and these | |
| 1197 // will be visible to the current thread, since the bits were set | |
| 1198 // under protection of the compile queue lock, which we hold now. | |
| 1199 // When the compilation completes, the compiler thread first sets | |
| 1200 // the compilation result and then clears the queued_for_compile | |
| 1201 // bits. Neither of these actions are protected by a barrier (or done | |
| 1202 // under the protection of a lock), so the only guarantee we have | |
| 1203 // (on machines with TSO (Total Store Order)) is that these values | |
| 1204 // will update in that order. As a result, the only combinations of | |
| 1205 // these bits that the current thread will see are, in temporal order: | |
| 1206 // <RESULT, QUEUE> : | |
| 1207 // <0, 1> : in compile queue, but not yet compiled | |
| 1208 // <1, 1> : compiled but queue bit not cleared | |
| 1209 // <1, 0> : compiled and queue bit cleared | |
| 1210 // Because we first check the queue bits then check the result bits, | |
| 1211 // we are assured that we cannot introduce a duplicate task. | |
| 1212 // Note that if we did the tests in the reverse order (i.e. check | |
| 1213 // result then check queued bit), we could get the result bit before | |
| 1214 // the compilation completed, and the queue bit after the compilation | |
| 1215 // completed, and end up introducing a "duplicate" (redundant) task. | |
| 1216 // In that case, the compiler thread should first check if a method | |
| 1217 // has already been compiled before trying to compile it. | |
| 1218 // NOTE: in the event that there are multiple compiler threads and | |
| 1219 // there is de-optimization/recompilation, things will get hairy, | |
| 1220 // and in that case it's best to protect both the testing (here) of | |
| 1221 // these bits, and their updating (here and elsewhere) under a | |
| 1222 // common lock. | |
| 1783 | 1223 task = create_compile_task(queue, |
| 0 | 1224 compile_id, method, |
| 1225 osr_bci, comp_level, | |
| 1226 hot_method, hot_count, comment, | |
| 1227 blocking); | |
| 1228 } | |
| 1229 | |
| 1230 if (blocking) { | |
| 1231 wait_for_completion(task); | |
| 1232 } | |
|
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|
1233 #endif |
| 0 | 1234 } |
| 1235 | |
| 1236 | |
| 1237 nmethod* CompileBroker::compile_method(methodHandle method, int osr_bci, | |
| 1783 | 1238 int comp_level, |
| 0 | 1239 methodHandle hot_method, int hot_count, |
|
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|
1240 const char* comment, Thread* THREAD) { |
| 0 | 1241 // make sure arguments make sense |
|
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1242 assert(method->method_holder()->oop_is_instance(), "not an instance method"); |
| 0 | 1243 assert(osr_bci == InvocationEntryBci || (0 <= osr_bci && osr_bci < method->code_size()), "bci out of range"); |
| 1244 assert(!method->is_abstract() && (osr_bci == InvocationEntryBci || !method->is_native()), "cannot compile abstract/native methods"); | |
|
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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|
1245 assert(!method->method_holder()->is_not_initialized() || method->intrinsic_id() == vmIntrinsics::_CompilerToVMImpl_executeCompiledMethod, "method holder must be initialized"); |
|
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|
1246 // allow any levels for WhiteBox |
|
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|
1247 assert(WhiteBoxAPI || TieredCompilation || comp_level == CompLevel_highest_tier, "only CompLevel_highest_tier must be used in non-tiered"); |
| 0 | 1248 // return quickly if possible |
| 1249 | |
| 1250 // lock, make sure that the compilation | |
| 1251 // isn't prohibited in a straightforward way. | |
|
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|
1252 AbstractCompiler *comp = CompileBroker::compiler(comp_level); |
|
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1253 if (comp == NULL || !comp->can_compile_method(method) || |
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1254 compilation_is_prohibited(method, osr_bci, comp_level)) { |
| 0 | 1255 return NULL; |
| 1256 } | |
| 1257 | |
| 1258 if (osr_bci == InvocationEntryBci) { | |
| 1259 // standard compilation | |
| 1260 nmethod* method_code = method->code(); | |
| 1783 | 1261 if (method_code != NULL) { |
| 1262 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
| 1263 return method_code; | |
| 1264 } | |
| 0 | 1265 } |
|
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|
1266 if (method->is_not_compilable(comp_level)) { |
|
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|
1267 return NULL; |
| 1202 | 1268 } |
| 0 | 1269 } else { |
| 1270 // osr compilation | |
| 1271 #ifndef TIERED | |
| 1272 // seems like an assert of dubious value | |
| 1783 | 1273 assert(comp_level == CompLevel_highest_tier, |
| 0 | 1274 "all OSR compiles are assumed to be at a single compilation lavel"); |
| 1275 #endif // TIERED | |
| 1783 | 1276 // We accept a higher level osr method |
| 1277 nmethod* nm = method->lookup_osr_nmethod_for(osr_bci, comp_level, false); | |
| 0 | 1278 if (nm != NULL) return nm; |
|
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1279 if (method->is_not_osr_compilable(comp_level)) return NULL; |
| 0 | 1280 } |
| 1281 | |
| 1282 assert(!HAS_PENDING_EXCEPTION, "No exception should be present"); | |
| 1283 // some prerequisites that are compiler specific | |
|
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|
1284 if (comp->is_c2() || comp->is_shark()) { |
|
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1285 method->constants()->resolve_string_constants(CHECK_AND_CLEAR_NULL); |
| 0 | 1286 // Resolve all classes seen in the signature of the method |
| 1287 // we are compiling. | |
|
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1288 Method::load_signature_classes(method, CHECK_AND_CLEAR_NULL); |
| 0 | 1289 } |
| 1290 | |
| 1291 // If the method is native, do the lookup in the thread requesting | |
| 1292 // the compilation. Native lookups can load code, which is not | |
| 1293 // permitted during compilation. | |
| 1294 // | |
| 1295 // Note: A native method implies non-osr compilation which is | |
| 1296 // checked with an assertion at the entry of this method. | |
|
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1297 if (method->is_native() && !method->is_method_handle_intrinsic()) { |
| 0 | 1298 bool in_base_library; |
| 1299 address adr = NativeLookup::lookup(method, in_base_library, THREAD); | |
| 1300 if (HAS_PENDING_EXCEPTION) { | |
| 1301 // In case of an exception looking up the method, we just forget | |
| 1302 // about it. The interpreter will kick-in and throw the exception. | |
| 1303 method->set_not_compilable(); // implies is_not_osr_compilable() | |
| 1304 CLEAR_PENDING_EXCEPTION; | |
| 1305 return NULL; | |
| 1306 } | |
| 1307 assert(method->has_native_function(), "must have native code by now"); | |
| 1308 } | |
| 1309 | |
| 1310 // RedefineClasses() has replaced this method; just return | |
| 1311 if (method->is_old()) { | |
| 1312 return NULL; | |
| 1313 } | |
| 1314 | |
| 1315 // JVMTI -- post_compile_event requires jmethod_id() that may require | |
| 1316 // a lock the compiling thread can not acquire. Prefetch it here. | |
| 1317 if (JvmtiExport::should_post_compiled_method_load()) { | |
| 1318 method->jmethod_id(); | |
| 1319 } | |
| 1320 | |
|
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1321 // If the compiler is shut off due to code cache getting full |
| 1202 | 1322 // fail out now so blocking compiles dont hang the java thread |
|
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1323 if (!should_compile_new_jobs()) { |
| 1783 | 1324 CompilationPolicy::policy()->delay_compilation(method()); |
| 1202 | 1325 return NULL; |
| 1326 } | |
| 1327 | |
| 0 | 1328 // do the compilation |
| 1329 if (method->is_native()) { | |
|
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1330 if (!PreferInterpreterNativeStubs || method->is_method_handle_intrinsic()) { |
|
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1331 // Acquire our lock. |
|
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|
1332 int compile_id; |
|
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1333 { |
|
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1334 MutexLocker locker(MethodCompileQueue_lock, THREAD); |
|
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1335 compile_id = assign_compile_id(method, standard_entry_bci); |
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1336 } |
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1337 (void) AdapterHandlerLibrary::create_native_wrapper(method, compile_id); |
| 0 | 1338 } else { |
| 1339 return NULL; | |
| 1340 } | |
| 1341 } else { | |
|
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1342 compile_method_base(method, osr_bci, comp_level, hot_method, hot_count, comment, THREAD); |
| 0 | 1343 } |
| 1344 | |
| 1345 // return requested nmethod | |
| 1783 | 1346 // We accept a higher level osr method |
| 1347 return osr_bci == InvocationEntryBci ? method->code() : method->lookup_osr_nmethod_for(osr_bci, comp_level, false); | |
| 0 | 1348 } |
| 1349 | |
| 1350 | |
| 1351 // ------------------------------------------------------------------ | |
| 1352 // CompileBroker::compilation_is_complete | |
| 1353 // | |
| 1354 // See if compilation of this method is already complete. | |
| 1355 bool CompileBroker::compilation_is_complete(methodHandle method, | |
| 1356 int osr_bci, | |
| 1357 int comp_level) { | |
| 1358 bool is_osr = (osr_bci != standard_entry_bci); | |
| 1359 if (is_osr) { | |
|
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1360 if (method->is_not_osr_compilable(comp_level)) { |
| 0 | 1361 return true; |
| 1362 } else { | |
| 1783 | 1363 nmethod* result = method->lookup_osr_nmethod_for(osr_bci, comp_level, true); |
| 0 | 1364 return (result != NULL); |
| 1365 } | |
| 1366 } else { | |
| 1367 if (method->is_not_compilable(comp_level)) { | |
| 1368 return true; | |
| 1369 } else { | |
| 1370 nmethod* result = method->code(); | |
| 1371 if (result == NULL) return false; | |
| 1783 | 1372 return comp_level == result->comp_level(); |
| 0 | 1373 } |
| 1374 } | |
| 1375 } | |
| 1376 | |
| 1377 | |
| 1378 // ------------------------------------------------------------------ | |
| 1379 // CompileBroker::compilation_is_in_queue | |
| 1380 // | |
| 1381 // See if this compilation is already requested. | |
| 1382 // | |
| 1383 // Implementation note: there is only a single "is in queue" bit | |
| 1384 // for each method. This means that the check below is overly | |
| 1385 // conservative in the sense that an osr compilation in the queue | |
| 1386 // will block a normal compilation from entering the queue (and vice | |
| 1387 // versa). This can be remedied by a full queue search to disambiguate | |
| 1388 // cases. If it is deemed profitible, this may be done. | |
| 1389 bool CompileBroker::compilation_is_in_queue(methodHandle method, | |
| 1783 | 1390 int osr_bci) { |
| 0 | 1391 return method->queued_for_compilation(); |
| 1392 } | |
| 1393 | |
| 1394 // ------------------------------------------------------------------ | |
| 1395 // CompileBroker::compilation_is_prohibited | |
| 1396 // | |
| 1397 // See if this compilation is not allowed. | |
| 1398 bool CompileBroker::compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level) { | |
| 1399 bool is_native = method->is_native(); | |
| 1400 // Some compilers may not support the compilation of natives. | |
|
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1401 AbstractCompiler *comp = compiler(comp_level); |
| 0 | 1402 if (is_native && |
|
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1403 (!CICompileNatives || comp == NULL || !comp->supports_native())) { |
| 1783 | 1404 method->set_not_compilable_quietly(comp_level); |
| 0 | 1405 return true; |
| 1406 } | |
| 1407 | |
| 1408 bool is_osr = (osr_bci != standard_entry_bci); | |
| 1409 // Some compilers may not support on stack replacement. | |
| 1410 if (is_osr && | |
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1411 (!CICompileOSR || comp == NULL || !comp->supports_osr())) { |
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1412 method->set_not_osr_compilable(comp_level); |
| 0 | 1413 return true; |
| 1414 } | |
| 1415 | |
| 1416 // The method may be explicitly excluded by the user. | |
| 1417 bool quietly; | |
| 1418 if (CompilerOracle::should_exclude(method, quietly)) { | |
| 1419 if (!quietly) { | |
| 1420 // This does not happen quietly... | |
| 1421 ResourceMark rm; | |
| 1422 tty->print("### Excluding %s:%s", | |
| 1423 method->is_native() ? "generation of native wrapper" : "compile", | |
| 1424 (method->is_static() ? " static" : "")); | |
| 1425 method->print_short_name(tty); | |
| 1426 tty->cr(); | |
| 1427 } | |
| 7998 | 1428 method->set_not_compilable(CompLevel_all, !quietly, "excluded by CompilerOracle"); |
| 0 | 1429 } |
| 1430 | |
| 1431 return false; | |
| 1432 } | |
| 1433 | |
| 1434 | |
| 1435 // ------------------------------------------------------------------ | |
| 1436 // CompileBroker::assign_compile_id | |
| 1437 // | |
| 1438 // Assign a serialized id number to this compilation request. If the | |
| 1439 // number falls out of the allowed range, return a 0. OSR | |
| 1440 // compilations may be numbered separately from regular compilations | |
| 1441 // if certain debugging flags are used. | |
| 1442 uint CompileBroker::assign_compile_id(methodHandle method, int osr_bci) { | |
| 1783 | 1443 assert(MethodCompileQueue_lock->owner() == Thread::current(), |
| 0 | 1444 "must hold the compilation queue lock"); |
| 1445 bool is_osr = (osr_bci != standard_entry_bci); | |
| 1446 uint id; | |
| 1447 if (CICountOSR && is_osr) { | |
| 1448 id = ++_osr_compilation_id; | |
| 1449 if ((uint)CIStartOSR <= id && id < (uint)CIStopOSR) { | |
| 1450 return id; | |
| 1451 } | |
| 1452 } else { | |
| 1453 id = ++_compilation_id; | |
| 1454 if ((uint)CIStart <= id && id < (uint)CIStop) { | |
| 1455 return id; | |
| 1456 } | |
| 1457 } | |
| 1458 | |
| 1459 // Method was not in the appropriate compilation range. | |
|
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1460 method->set_not_compilable_quietly(); |
| 0 | 1461 return 0; |
| 1462 } | |
| 1463 | |
| 1464 | |
| 1465 // ------------------------------------------------------------------ | |
| 1466 // CompileBroker::is_compile_blocking | |
| 1467 // | |
| 1468 // Should the current thread be blocked until this compilation request | |
| 1469 // has been fulfilled? | |
| 1470 bool CompileBroker::is_compile_blocking(methodHandle method, int osr_bci) { | |
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1471 assert(!InstanceRefKlass::owns_pending_list_lock(JavaThread::current()), "possible deadlock"); |
|
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1472 return !BackgroundCompilation; |
| 0 | 1473 } |
| 1474 | |
| 1475 | |
| 1476 // ------------------------------------------------------------------ | |
| 1477 // CompileBroker::preload_classes | |
| 1478 void CompileBroker::preload_classes(methodHandle method, TRAPS) { | |
| 1479 // Move this code over from c1_Compiler.cpp | |
| 1480 ShouldNotReachHere(); | |
| 1481 } | |
| 1482 | |
| 1483 | |
| 1484 // ------------------------------------------------------------------ | |
| 1485 // CompileBroker::create_compile_task | |
| 1486 // | |
| 1487 // Create a CompileTask object representing the current request for | |
| 1488 // compilation. Add this task to the queue. | |
| 1489 CompileTask* CompileBroker::create_compile_task(CompileQueue* queue, | |
| 1490 int compile_id, | |
| 1491 methodHandle method, | |
| 1492 int osr_bci, | |
| 1493 int comp_level, | |
| 1494 methodHandle hot_method, | |
| 1495 int hot_count, | |
| 1496 const char* comment, | |
| 1497 bool blocking) { | |
| 1498 CompileTask* new_task = allocate_task(); | |
| 1499 new_task->initialize(compile_id, method, osr_bci, comp_level, | |
| 1500 hot_method, hot_count, comment, | |
| 1501 blocking); | |
| 1502 queue->add(new_task); | |
| 1503 return new_task; | |
| 1504 } | |
| 1505 | |
| 1506 | |
| 1507 // ------------------------------------------------------------------ | |
| 1508 // CompileBroker::allocate_task | |
| 1509 // | |
| 1510 // Allocate a CompileTask, from the free list if possible. | |
| 1511 CompileTask* CompileBroker::allocate_task() { | |
| 1512 MutexLocker locker(CompileTaskAlloc_lock); | |
| 1513 CompileTask* task = NULL; | |
| 1514 if (_task_free_list != NULL) { | |
| 1515 task = _task_free_list; | |
| 1516 _task_free_list = task->next(); | |
| 1517 task->set_next(NULL); | |
| 1518 } else { | |
| 1519 task = new CompileTask(); | |
| 1520 task->set_next(NULL); | |
| 1521 } | |
| 1522 return task; | |
| 1523 } | |
| 1524 | |
| 1525 | |
| 1526 // ------------------------------------------------------------------ | |
| 1527 // CompileBroker::free_task | |
| 1528 // | |
| 1529 // Add a task to the free list. | |
| 1530 void CompileBroker::free_task(CompileTask* task) { | |
| 1531 MutexLocker locker(CompileTaskAlloc_lock); | |
| 1532 task->free(); | |
| 1533 task->set_next(_task_free_list); | |
| 1534 _task_free_list = task; | |
| 1535 } | |
| 1536 | |
| 1537 | |
| 1538 // ------------------------------------------------------------------ | |
| 1539 // CompileBroker::wait_for_completion | |
| 1540 // | |
| 1541 // Wait for the given method CompileTask to complete. | |
| 1542 void CompileBroker::wait_for_completion(CompileTask* task) { | |
| 1543 if (CIPrintCompileQueue) { | |
| 1544 tty->print_cr("BLOCKING FOR COMPILE"); | |
| 1545 } | |
| 1546 | |
| 1547 assert(task->is_blocking(), "can only wait on blocking task"); | |
| 1548 | |
| 1549 JavaThread *thread = JavaThread::current(); | |
| 1550 thread->set_blocked_on_compilation(true); | |
| 1551 | |
|
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1552 methodHandle method(thread, task->method()); |
| 0 | 1553 { |
| 1554 MutexLocker waiter(task->lock(), thread); | |
| 1555 | |
| 1556 while (!task->is_complete()) | |
| 1557 task->lock()->wait(); | |
| 1558 } | |
| 1559 // It is harmless to check this status without the lock, because | |
| 1560 // completion is a stable property (until the task object is recycled). | |
| 1561 assert(task->is_complete(), "Compilation should have completed"); | |
| 1562 assert(task->code_handle() == NULL, "must be reset"); | |
| 1563 | |
| 1564 thread->set_blocked_on_compilation(false); | |
| 1565 | |
| 1566 // By convention, the waiter is responsible for recycling a | |
| 1567 // blocking CompileTask. Since there is only one waiter ever | |
| 1568 // waiting on a CompileTask, we know that no one else will | |
| 1569 // be using this CompileTask; we can free it. | |
| 1570 free_task(task); | |
| 1571 } | |
| 1572 | |
| 1573 // ------------------------------------------------------------------ | |
| 1574 // CompileBroker::compiler_thread_loop | |
| 1575 // | |
| 1576 // The main loop run by a CompilerThread. | |
| 1577 void CompileBroker::compiler_thread_loop() { | |
| 1578 CompilerThread* thread = CompilerThread::current(); | |
| 1579 CompileQueue* queue = thread->queue(); | |
| 1580 | |
| 1581 // For the thread that initializes the ciObjectFactory | |
| 1582 // this resource mark holds all the shared objects | |
| 1583 ResourceMark rm; | |
| 1584 | |
| 1585 // First thread to get here will initialize the compiler interface | |
| 1586 | |
| 1587 if (!ciObjectFactory::is_initialized()) { | |
| 1588 ASSERT_IN_VM; | |
| 1589 MutexLocker only_one (CompileThread_lock, thread); | |
| 1590 if (!ciObjectFactory::is_initialized()) { | |
| 1591 ciObjectFactory::initialize(); | |
| 1592 } | |
| 1593 } | |
| 1594 | |
| 1595 // Open a log. | |
| 1596 if (LogCompilation) { | |
| 1597 init_compiler_thread_log(); | |
| 1598 } | |
| 1599 CompileLog* log = thread->log(); | |
| 1600 if (log != NULL) { | |
| 6843 | 1601 log->begin_elem("start_compile_thread name='%s' thread='" UINTX_FORMAT "' process='%d'", |
| 1602 thread->name(), | |
| 0 | 1603 os::current_thread_id(), |
| 1604 os::current_process_id()); | |
| 1605 log->stamp(); | |
| 1606 log->end_elem(); | |
| 1607 } | |
| 1608 | |
| 1609 while (true) { | |
| 1610 { | |
| 1611 // We need this HandleMark to avoid leaking VM handles. | |
| 1612 HandleMark hm(thread); | |
| 1202 | 1613 |
|
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|
1614 if (CodeCache::unallocated_capacity() < CodeCacheMinimumFreeSpace) { |
| 1202 | 1615 // the code cache is really full |
| 1616 handle_full_code_cache(); | |
| 0 | 1617 } |
| 1618 | |
| 1619 CompileTask* task = queue->get(); | |
| 1620 | |
| 1621 // Give compiler threads an extra quanta. They tend to be bursty and | |
| 1622 // this helps the compiler to finish up the job. | |
| 1623 if( CompilerThreadHintNoPreempt ) | |
| 1624 os::hint_no_preempt(); | |
| 1625 | |
| 1626 // trace per thread time and compile statistics | |
| 1627 CompilerCounters* counters = ((CompilerThread*)thread)->counters(); | |
| 1628 PerfTraceTimedEvent(counters->time_counter(), counters->compile_counter()); | |
| 1629 | |
| 1630 // Assign the task to the current thread. Mark this compilation | |
| 1631 // thread as active for the profiler. | |
| 1632 CompileTaskWrapper ctw(task); | |
| 1633 nmethodLocker result_handle; // (handle for the nmethod produced by this task) | |
| 1634 task->set_code_handle(&result_handle); | |
|
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1635 methodHandle method(thread, task->method()); |
| 0 | 1636 |
| 1637 // Never compile a method if breakpoints are present in it | |
| 1638 if (method()->number_of_breakpoints() == 0) { | |
| 1639 // Compile the method. | |
| 1202 | 1640 if ((UseCompiler || AlwaysCompileLoopMethods) && CompileBroker::should_compile_new_jobs()) { |
| 0 | 1641 #ifdef COMPILER1 |
| 1642 // Allow repeating compilations for the purpose of benchmarking | |
| 1643 // compile speed. This is not useful for customers. | |
| 1644 if (CompilationRepeat != 0) { | |
| 1645 int compile_count = CompilationRepeat; | |
| 1646 while (compile_count > 0) { | |
| 1647 invoke_compiler_on_method(task); | |
| 1648 nmethod* nm = method->code(); | |
| 1649 if (nm != NULL) { | |
| 1650 nm->make_zombie(); | |
| 1651 method->clear_code(); | |
| 1652 } | |
| 1653 compile_count--; | |
| 1654 } | |
| 1655 } | |
| 1656 #endif /* COMPILER1 */ | |
| 1657 invoke_compiler_on_method(task); | |
| 1658 } else { | |
| 1659 // After compilation is disabled, remove remaining methods from queue | |
| 1660 method->clear_queued_for_compilation(); | |
| 1661 } | |
| 1662 } | |
| 1663 } | |
| 1664 } | |
| 1665 } | |
| 1666 | |
| 1667 | |
| 1668 // ------------------------------------------------------------------ | |
| 1669 // CompileBroker::init_compiler_thread_log | |
| 1670 // | |
| 1671 // Set up state required by +LogCompilation. | |
| 1672 void CompileBroker::init_compiler_thread_log() { | |
| 1673 CompilerThread* thread = CompilerThread::current(); | |
|
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|
1674 char file_name[4*K]; |
| 0 | 1675 FILE* fp = NULL; |
| 1676 intx thread_id = os::current_thread_id(); | |
| 1677 for (int try_temp_dir = 1; try_temp_dir >= 0; try_temp_dir--) { | |
| 1678 const char* dir = (try_temp_dir ? os::get_temp_directory() : NULL); | |
|
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1679 if (dir == NULL) { |
|
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|
1680 jio_snprintf(file_name, sizeof(file_name), "hs_c" UINTX_FORMAT "_pid%u.log", |
|
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|
1681 thread_id, os::current_process_id()); |
|
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|
1682 } else { |
|
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|
1683 jio_snprintf(file_name, sizeof(file_name), |
|
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|
1684 "%s%shs_c" UINTX_FORMAT "_pid%u.log", dir, |
|
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|
1685 os::file_separator(), thread_id, os::current_process_id()); |
|
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|
1686 } |
|
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|
1687 |
|
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|
1688 fp = fopen(file_name, "at"); |
| 0 | 1689 if (fp != NULL) { |
|
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|
1690 if (LogCompilation && Verbose) { |
|
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|
1691 tty->print_cr("Opening compilation log %s", file_name); |
|
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|
1692 } |
|
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|
1693 CompileLog* log = new(ResourceObj::C_HEAP, mtCompiler) CompileLog(file_name, fp, thread_id); |
|
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|
1694 thread->init_log(log); |
|
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|
1695 |
|
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|
1696 if (xtty != NULL) { |
|
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|
1697 ttyLocker ttyl; |
|
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|
1698 // Record any per thread log files |
|
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|
1699 xtty->elem("thread_logfile thread='%d' filename='%s'", thread_id, file_name); |
|
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|
1700 } |
|
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|
1701 return; |
| 0 | 1702 } |
| 1703 } | |
|
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|
1704 warning("Cannot open log file: %s", file_name); |
| 0 | 1705 } |
| 1706 | |
| 1707 // ------------------------------------------------------------------ | |
| 1708 // CompileBroker::set_should_block | |
| 1709 // | |
| 1710 // Set _should_block. | |
| 1711 // Call this from the VM, with Threads_lock held and a safepoint requested. | |
| 1712 void CompileBroker::set_should_block() { | |
| 1713 assert(Threads_lock->owner() == Thread::current(), "must have threads lock"); | |
| 1714 assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint already"); | |
| 1715 #ifndef PRODUCT | |
| 1716 if (PrintCompilation && (Verbose || WizardMode)) | |
| 1717 tty->print_cr("notifying compiler thread pool to block"); | |
| 1718 #endif | |
| 1719 _should_block = true; | |
| 1720 } | |
| 1721 | |
| 1722 // ------------------------------------------------------------------ | |
| 1723 // CompileBroker::maybe_block | |
| 1724 // | |
| 1725 // Call this from the compiler at convenient points, to poll for _should_block. | |
| 1726 void CompileBroker::maybe_block() { | |
| 1727 if (_should_block) { | |
| 1728 #ifndef PRODUCT | |
| 1729 if (PrintCompilation && (Verbose || WizardMode)) | |
| 1730 tty->print_cr("compiler thread " INTPTR_FORMAT " poll detects block request", Thread::current()); | |
| 1731 #endif | |
| 1732 ThreadInVMfromNative tivfn(JavaThread::current()); | |
| 1733 } | |
| 1734 } | |
| 1735 | |
|
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|
1736 // wrapper for CodeCache::print_summary() |
|
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|
1737 static void codecache_print(bool detailed) |
|
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|
1738 { |
|
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|
1739 ResourceMark rm; |
|
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|
1740 stringStream s; |
|
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|
1741 // Dump code cache into a buffer before locking the tty, |
|
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|
1742 { |
|
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|
1743 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
|
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1744 CodeCache::print_summary(&s, detailed); |
|
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|
1745 } |
|
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|
1746 ttyLocker ttyl; |
|
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1747 tty->print(s.as_string()); |
|
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|
1748 } |
|
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|
1749 |
| 0 | 1750 // ------------------------------------------------------------------ |
| 1751 // CompileBroker::invoke_compiler_on_method | |
| 1752 // | |
| 1753 // Compile a method. | |
| 1754 // | |
| 1755 void CompileBroker::invoke_compiler_on_method(CompileTask* task) { | |
| 1756 if (PrintCompilation) { | |
| 1757 ResourceMark rm; | |
| 1758 task->print_line(); | |
| 1759 } | |
| 1760 elapsedTimer time; | |
| 1761 | |
| 1762 CompilerThread* thread = CompilerThread::current(); | |
| 1763 ResourceMark rm(thread); | |
| 1764 | |
|
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|
1765 if (LogEvents) { |
|
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|
1766 _compilation_log->log_compile(thread, task); |
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1767 } |
|
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1768 |
| 0 | 1769 // Common flags. |
| 1770 uint compile_id = task->compile_id(); | |
| 1771 int osr_bci = task->osr_bci(); | |
| 1772 bool is_osr = (osr_bci != standard_entry_bci); | |
| 1773 bool should_log = (thread->log() != NULL); | |
| 1774 bool should_break = false; | |
|
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1775 int task_level = task->comp_level(); |
| 0 | 1776 { |
| 1777 // create the handle inside it's own block so it can't | |
| 1778 // accidentally be referenced once the thread transitions to | |
| 1779 // native. The NoHandleMark before the transition should catch | |
| 1780 // any cases where this occurs in the future. | |
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1781 methodHandle method(thread, task->method()); |
| 0 | 1782 should_break = check_break_at(method, compile_id, is_osr); |
| 1783 if (should_log && !CompilerOracle::should_log(method)) { | |
| 1784 should_log = false; | |
| 1785 } | |
| 1786 assert(!method->is_native(), "no longer compile natives"); | |
| 1787 | |
| 1788 // Save information about this method in case of failure. | |
|
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1789 set_last_compile(thread, method, is_osr, task_level); |
| 0 | 1790 |
|
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1791 DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, compiler_name(task_level)); |
| 0 | 1792 } |
| 1793 | |
| 1794 // Allocate a new set of JNI handles. | |
| 1795 push_jni_handle_block(); | |
|
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1796 Method* target_handle = task->method(); |
| 0 | 1797 int compilable = ciEnv::MethodCompilable; |
| 1798 { | |
| 1799 int system_dictionary_modification_counter; | |
| 1800 { | |
| 1801 MutexLocker locker(Compile_lock, thread); | |
| 1802 system_dictionary_modification_counter = SystemDictionary::number_of_modifications(); | |
| 1803 } | |
| 1804 | |
| 1805 NoHandleMark nhm; | |
| 1806 ThreadToNativeFromVM ttn(thread); | |
| 1807 | |
| 1808 ciEnv ci_env(task, system_dictionary_modification_counter); | |
| 1809 if (should_break) { | |
| 1810 ci_env.set_break_at_compile(true); | |
| 1811 } | |
| 1812 if (should_log) { | |
| 1813 ci_env.set_log(thread->log()); | |
| 1814 } | |
| 1815 assert(thread->env() == &ci_env, "set by ci_env"); | |
| 1816 // The thread-env() field is cleared in ~CompileTaskWrapper. | |
| 1817 | |
|
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1818 // Cache Jvmti state |
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1819 ci_env.cache_jvmti_state(); |
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1820 |
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1821 // Cache DTrace flags |
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1822 ci_env.cache_dtrace_flags(); |
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1823 |
| 0 | 1824 ciMethod* target = ci_env.get_method_from_handle(target_handle); |
| 1825 | |
| 1826 TraceTime t1("compilation", &time); | |
| 10405 | 1827 EventCompilation event; |
| 0 | 1828 |
|
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1829 AbstractCompiler *comp = compiler(task_level); |
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1830 if (comp == NULL) { |
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1831 ci_env.record_method_not_compilable("no compiler", !TieredCompilation); |
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1832 } else { |
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1833 comp->compile_method(&ci_env, target, osr_bci); |
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1834 } |
| 0 | 1835 |
| 1836 if (!ci_env.failing() && task->code() == NULL) { | |
| 1837 //assert(false, "compiler should always document failure"); | |
| 1838 // The compiler elected, without comment, not to register a result. | |
| 1839 // Do not attempt further compilations of this method. | |
|
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1840 ci_env.record_method_not_compilable("compile failed", !TieredCompilation); |
| 0 | 1841 } |
| 1842 | |
|
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1843 // Copy this bit to the enclosing block: |
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1844 compilable = ci_env.compilable(); |
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1845 |
| 0 | 1846 if (ci_env.failing()) { |
|
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1847 const char* retry_message = ci_env.retry_message(); |
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1848 if (_compilation_log != NULL) { |
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1849 _compilation_log->log_failure(thread, task, ci_env.failure_reason(), retry_message); |
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1850 } |
| 0 | 1851 if (PrintCompilation) { |
|
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1852 FormatBufferResource msg = retry_message != NULL ? |
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1853 err_msg_res("COMPILE SKIPPED: %s (%s)", ci_env.failure_reason(), retry_message) : |
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1854 err_msg_res("COMPILE SKIPPED: %s", ci_env.failure_reason()); |
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1855 task->print_compilation(tty, msg); |
| 0 | 1856 } |
| 1857 } else { | |
| 1858 task->mark_success(); | |
| 1859 task->set_num_inlined_bytecodes(ci_env.num_inlined_bytecodes()); | |
|
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1860 if (_compilation_log != NULL) { |
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1861 nmethod* code = task->code(); |
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1862 if (code != NULL) { |
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1863 _compilation_log->log_nmethod(thread, code); |
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1864 } |
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1865 } |
| 0 | 1866 } |
|
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1867 // simulate crash during compilation |
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1868 assert(task->compile_id() != CICrashAt, "just as planned"); |
| 10405 | 1869 if (event.should_commit()) { |
| 1870 event.set_method(target->get_Method()); | |
| 1871 event.set_compileID(compile_id); | |
| 1872 event.set_compileLevel(task->comp_level()); | |
| 1873 event.set_succeded(task->is_success()); | |
| 1874 event.set_isOsr(is_osr); | |
| 1875 event.set_codeSize((task->code() == NULL) ? 0 : task->code()->total_size()); | |
| 1876 event.set_inlinedBytes(task->num_inlined_bytecodes()); | |
| 1877 event.commit(); | |
| 1878 } | |
| 0 | 1879 } |
| 1880 pop_jni_handle_block(); | |
| 1881 | |
|
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1882 methodHandle method(thread, task->method()); |
| 0 | 1883 |
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1884 DTRACE_METHOD_COMPILE_END_PROBE(method, compiler_name(task_level), task->is_success()); |
| 0 | 1885 |
| 1886 collect_statistics(thread, time, task); | |
| 1887 | |
|
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1888 if (PrintCompilation && PrintCompilation2) { |
| 4047 | 1889 tty->print("%7d ", (int) tty->time_stamp().milliseconds()); // print timestamp |
| 1890 tty->print("%4d ", compile_id); // print compilation number | |
| 1891 tty->print("%s ", (is_osr ? "%" : " ")); | |
| 10278 | 1892 if (task->code() != NULL) { |
| 1893 tty->print("size: %d(%d) ", task->code()->total_size(), task->code()->insts_size()); | |
| 1894 } | |
| 1895 tty->print_cr("time: %d inlined: %d bytes", (int)time.milliseconds(), task->num_inlined_bytecodes()); | |
| 4047 | 1896 } |
| 1897 | |
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1898 if (PrintCodeCacheOnCompilation) |
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1899 codecache_print(/* detailed= */ false); |
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1900 |
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1901 // Disable compilation, if required. |
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1902 switch (compilable) { |
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1903 case ciEnv::MethodCompilable_never: |
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1904 if (is_osr) |
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1905 method->set_not_osr_compilable_quietly(); |
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1906 else |
|
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1907 method->set_not_compilable_quietly(); |
|
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1908 break; |
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1909 case ciEnv::MethodCompilable_not_at_tier: |
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1910 if (is_osr) |
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1911 method->set_not_osr_compilable_quietly(task_level); |
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1912 else |
|
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1913 method->set_not_compilable_quietly(task_level); |
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1914 break; |
| 0 | 1915 } |
| 1916 | |
| 1917 // Note that the queued_for_compilation bits are cleared without | |
| 1918 // protection of a mutex. [They were set by the requester thread, | |
| 1919 // when adding the task to the complie queue -- at which time the | |
| 1920 // compile queue lock was held. Subsequently, we acquired the compile | |
| 1921 // queue lock to get this task off the compile queue; thus (to belabour | |
| 1922 // the point somewhat) our clearing of the bits must be occurring | |
| 1923 // only after the setting of the bits. See also 14012000 above. | |
| 1924 method->clear_queued_for_compilation(); | |
| 1925 | |
| 1926 #ifdef ASSERT | |
| 1927 if (CollectedHeap::fired_fake_oom()) { | |
| 1928 // The current compile received a fake OOM during compilation so | |
| 1929 // go ahead and exit the VM since the test apparently succeeded | |
| 1930 tty->print_cr("*** Shutting down VM after successful fake OOM"); | |
| 1931 vm_exit(0); | |
| 1932 } | |
| 1933 #endif | |
| 1934 } | |
| 1935 | |
| 1936 // ------------------------------------------------------------------ | |
| 1202 | 1937 // CompileBroker::handle_full_code_cache |
| 1938 // | |
| 1939 // The CodeCache is full. Print out warning and disable compilation or | |
| 1940 // try code cache cleaning so compilation can continue later. | |
| 1941 void CompileBroker::handle_full_code_cache() { | |
| 1942 UseInterpreter = true; | |
| 1943 if (UseCompiler || AlwaysCompileLoopMethods ) { | |
|
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1944 if (xtty != NULL) { |
|
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1945 ResourceMark rm; |
|
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1946 stringStream s; |
|
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1947 // Dump code cache state into a buffer before locking the tty, |
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1948 // because log_state() will use locks causing lock conflicts. |
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1949 CodeCache::log_state(&s); |
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1950 // Lock to prevent tearing |
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1951 ttyLocker ttyl; |
|
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1952 xtty->begin_elem("code_cache_full"); |
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1953 xtty->print(s.as_string()); |
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1954 xtty->stamp(); |
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1955 xtty->end_elem(); |
| 1202 | 1956 } |
|
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1957 warning("CodeCache is full. Compiler has been disabled."); |
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1958 warning("Try increasing the code cache size using -XX:ReservedCodeCacheSize="); |
| 10405 | 1959 |
| 1960 CodeCache::report_codemem_full(); | |
| 1961 | |
| 1962 | |
|
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1963 #ifndef PRODUCT |
| 1202 | 1964 if (CompileTheWorld || ExitOnFullCodeCache) { |
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1965 codecache_print(/* detailed= */ true); |
| 1202 | 1966 before_exit(JavaThread::current()); |
| 1967 exit_globals(); // will delete tty | |
| 1968 vm_direct_exit(CompileTheWorld ? 0 : 1); | |
| 1969 } | |
|
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1970 #endif |
| 1202 | 1971 if (UseCodeCacheFlushing) { |
|
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1972 // Since code cache is full, immediately stop new compiles |
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1973 if (CompileBroker::set_should_compile_new_jobs(CompileBroker::stop_compilation)) { |
|
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1974 NMethodSweeper::log_sweep("disable_compiler"); |
|
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1975 NMethodSweeper::possibly_sweep(); |
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1976 } |
| 1202 | 1977 } else { |
| 1978 UseCompiler = false; | |
| 1979 AlwaysCompileLoopMethods = false; | |
| 1980 } | |
| 1981 } | |
|
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1982 codecache_print(/* detailed= */ true); |
| 1202 | 1983 } |
| 1984 | |
| 1985 // ------------------------------------------------------------------ | |
| 0 | 1986 // CompileBroker::set_last_compile |
| 1987 // | |
| 1988 // Record this compilation for debugging purposes. | |
| 1989 void CompileBroker::set_last_compile(CompilerThread* thread, methodHandle method, bool is_osr, int comp_level) { | |
| 1990 ResourceMark rm; | |
| 1991 char* method_name = method->name()->as_C_string(); | |
| 1992 strncpy(_last_method_compiled, method_name, CompileBroker::name_buffer_length); | |
| 1993 char current_method[CompilerCounters::cmname_buffer_length]; | |
| 1994 size_t maxLen = CompilerCounters::cmname_buffer_length; | |
| 1995 | |
| 1996 if (UsePerfData) { | |
|
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1997 const char* class_name = method->method_holder()->name()->as_C_string(); |
| 0 | 1998 |
| 1999 size_t s1len = strlen(class_name); | |
| 2000 size_t s2len = strlen(method_name); | |
| 2001 | |
| 2002 // check if we need to truncate the string | |
| 2003 if (s1len + s2len + 2 > maxLen) { | |
| 2004 | |
| 2005 // the strategy is to lop off the leading characters of the | |
| 2006 // class name and the trailing characters of the method name. | |
| 2007 | |
| 2008 if (s2len + 2 > maxLen) { | |
| 2009 // lop of the entire class name string, let snprintf handle | |
| 2010 // truncation of the method name. | |
| 2011 class_name += s1len; // null string | |
| 2012 } | |
| 2013 else { | |
| 2014 // lop off the extra characters from the front of the class name | |
| 2015 class_name += ((s1len + s2len + 2) - maxLen); | |
| 2016 } | |
| 2017 } | |
| 2018 | |
| 2019 jio_snprintf(current_method, maxLen, "%s %s", class_name, method_name); | |
| 2020 } | |
| 2021 | |
| 2022 if (CICountOSR && is_osr) { | |
| 2023 _last_compile_type = osr_compile; | |
| 2024 } else { | |
| 2025 _last_compile_type = normal_compile; | |
| 2026 } | |
| 2027 _last_compile_level = comp_level; | |
| 2028 | |
| 2029 if (UsePerfData) { | |
| 2030 CompilerCounters* counters = thread->counters(); | |
| 2031 counters->set_current_method(current_method); | |
| 2032 counters->set_compile_type((jlong)_last_compile_type); | |
| 2033 } | |
| 2034 } | |
| 2035 | |
| 2036 | |
| 2037 // ------------------------------------------------------------------ | |
| 2038 // CompileBroker::push_jni_handle_block | |
| 2039 // | |
| 2040 // Push on a new block of JNI handles. | |
| 2041 void CompileBroker::push_jni_handle_block() { | |
| 2042 JavaThread* thread = JavaThread::current(); | |
| 2043 | |
| 2044 // Allocate a new block for JNI handles. | |
| 2045 // Inlined code from jni_PushLocalFrame() | |
| 2046 JNIHandleBlock* java_handles = thread->active_handles(); | |
| 2047 JNIHandleBlock* compile_handles = JNIHandleBlock::allocate_block(thread); | |
| 2048 assert(compile_handles != NULL && java_handles != NULL, "should not be NULL"); | |
| 2049 compile_handles->set_pop_frame_link(java_handles); // make sure java handles get gc'd. | |
| 2050 thread->set_active_handles(compile_handles); | |
| 2051 } | |
| 2052 | |
| 2053 | |
| 2054 // ------------------------------------------------------------------ | |
| 2055 // CompileBroker::pop_jni_handle_block | |
| 2056 // | |
| 2057 // Pop off the current block of JNI handles. | |
| 2058 void CompileBroker::pop_jni_handle_block() { | |
| 2059 JavaThread* thread = JavaThread::current(); | |
| 2060 | |
| 2061 // Release our JNI handle block | |
| 2062 JNIHandleBlock* compile_handles = thread->active_handles(); | |
| 2063 JNIHandleBlock* java_handles = compile_handles->pop_frame_link(); | |
| 2064 thread->set_active_handles(java_handles); | |
| 2065 compile_handles->set_pop_frame_link(NULL); | |
| 2066 JNIHandleBlock::release_block(compile_handles, thread); // may block | |
| 2067 } | |
| 2068 | |
| 2069 | |
| 2070 // ------------------------------------------------------------------ | |
| 2071 // CompileBroker::check_break_at | |
| 2072 // | |
| 2073 // Should the compilation break at the current compilation. | |
| 2074 bool CompileBroker::check_break_at(methodHandle method, int compile_id, bool is_osr) { | |
| 2075 if (CICountOSR && is_osr && (compile_id == CIBreakAtOSR)) { | |
| 2076 return true; | |
| 2077 } else if( CompilerOracle::should_break_at(method) ) { // break when compiling | |
| 2078 return true; | |
| 2079 } else { | |
| 2080 return (compile_id == CIBreakAt); | |
| 2081 } | |
| 2082 } | |
| 2083 | |
| 2084 // ------------------------------------------------------------------ | |
| 2085 // CompileBroker::collect_statistics | |
| 2086 // | |
| 2087 // Collect statistics about the compilation. | |
| 2088 | |
| 2089 void CompileBroker::collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task) { | |
| 2090 bool success = task->is_success(); | |
|
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2091 methodHandle method (thread, task->method()); |
| 0 | 2092 uint compile_id = task->compile_id(); |
| 2093 bool is_osr = (task->osr_bci() != standard_entry_bci); | |
| 2094 nmethod* code = task->code(); | |
| 2095 CompilerCounters* counters = thread->counters(); | |
| 2096 | |
| 2097 assert(code == NULL || code->is_locked_by_vm(), "will survive the MutexLocker"); | |
| 2098 MutexLocker locker(CompileStatistics_lock); | |
| 2099 | |
| 2100 // _perf variables are production performance counters which are | |
| 2101 // updated regardless of the setting of the CITime and CITimeEach flags | |
| 2102 // | |
| 2103 if (!success) { | |
| 2104 _total_bailout_count++; | |
| 2105 if (UsePerfData) { | |
| 2106 _perf_last_failed_method->set_value(counters->current_method()); | |
| 2107 _perf_last_failed_type->set_value(counters->compile_type()); | |
| 2108 _perf_total_bailout_count->inc(); | |
| 2109 } | |
| 2110 } else if (code == NULL) { | |
| 2111 if (UsePerfData) { | |
| 2112 _perf_last_invalidated_method->set_value(counters->current_method()); | |
| 2113 _perf_last_invalidated_type->set_value(counters->compile_type()); | |
| 2114 _perf_total_invalidated_count->inc(); | |
| 2115 } | |
| 2116 _total_invalidated_count++; | |
| 2117 } else { | |
| 2118 // Compilation succeeded | |
| 2119 | |
| 2120 // update compilation ticks - used by the implementation of | |
| 2121 // java.lang.management.CompilationMBean | |
| 2122 _perf_total_compilation->inc(time.ticks()); | |
| 2123 | |
| 10405 | 2124 _t_total_compilation.add(time); |
| 2125 _peak_compilation_time = time.milliseconds() > _peak_compilation_time ? time.milliseconds() : _peak_compilation_time; | |
| 2126 | |
| 0 | 2127 if (CITime) { |
| 2128 if (is_osr) { | |
| 2129 _t_osr_compilation.add(time); | |
| 2130 _sum_osr_bytes_compiled += method->code_size() + task->num_inlined_bytecodes(); | |
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2131 #ifdef GRAAL |
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2132 compiler(task->comp_level())->stats()->_t_osr_compilation.add(time); |
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2133 compiler(task->comp_level())->stats()->_sum_osr_bytes_compiled += method->code_size() + task->num_inlined_bytecodes(); |
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2134 #endif |
| 0 | 2135 } else { |
| 2136 _t_standard_compilation.add(time); | |
| 2137 _sum_standard_bytes_compiled += method->code_size() + task->num_inlined_bytecodes(); | |
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2138 #ifdef GRAAL |
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2139 compiler(task->comp_level())->stats()->_t_standard_compilation.add(time); |
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2140 compiler(task->comp_level())->stats()->_sum_standard_bytes_compiled += method->code_size() + task->num_inlined_bytecodes(); |
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2141 #endif |
| 0 | 2142 } |
| 2143 } | |
| 2144 | |
| 2145 if (UsePerfData) { | |
| 2146 // save the name of the last method compiled | |
| 2147 _perf_last_method->set_value(counters->current_method()); | |
| 2148 _perf_last_compile_type->set_value(counters->compile_type()); | |
| 2149 _perf_last_compile_size->set_value(method->code_size() + | |
| 2150 task->num_inlined_bytecodes()); | |
| 2151 if (is_osr) { | |
| 2152 _perf_osr_compilation->inc(time.ticks()); | |
| 2153 _perf_sum_osr_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes()); | |
| 2154 } else { | |
| 2155 _perf_standard_compilation->inc(time.ticks()); | |
| 2156 _perf_sum_standard_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes()); | |
| 2157 } | |
| 2158 } | |
| 2159 | |
| 2160 if (CITimeEach) { | |
| 2161 float bytes_per_sec = 1.0 * (method->code_size() + task->num_inlined_bytecodes()) / time.seconds(); | |
| 2162 tty->print_cr("%3d seconds: %f bytes/sec : %f (bytes %d + %d inlined)", | |
| 2163 compile_id, time.seconds(), bytes_per_sec, method->code_size(), task->num_inlined_bytecodes()); | |
| 2164 } | |
| 2165 | |
| 2166 // Collect counts of successful compilations | |
| 1748 | 2167 _sum_nmethod_size += code->total_size(); |
| 2168 _sum_nmethod_code_size += code->insts_size(); | |
| 0 | 2169 _total_compile_count++; |
| 2170 | |
| 2171 if (UsePerfData) { | |
| 1748 | 2172 _perf_sum_nmethod_size->inc( code->total_size()); |
| 2173 _perf_sum_nmethod_code_size->inc(code->insts_size()); | |
| 0 | 2174 _perf_total_compile_count->inc(); |
| 2175 } | |
| 2176 | |
| 2177 if (is_osr) { | |
| 2178 if (UsePerfData) _perf_total_osr_compile_count->inc(); | |
| 2179 _total_osr_compile_count++; | |
| 2180 } else { | |
| 2181 if (UsePerfData) _perf_total_standard_compile_count->inc(); | |
| 2182 _total_standard_compile_count++; | |
| 2183 } | |
| 2184 } | |
| 2185 // set the current method for the thread to null | |
| 2186 if (UsePerfData) counters->set_current_method(""); | |
| 2187 } | |
| 2188 | |
|
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2189 const char* CompileBroker::compiler_name(int comp_level) { |
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2190 AbstractCompiler *comp = CompileBroker::compiler(comp_level); |
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2191 if (comp == NULL) { |
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2192 return "no compiler"; |
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2193 } else { |
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2194 return (comp->name()); |
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2195 } |
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2196 } |
| 0 | 2197 |
| 2198 void CompileBroker::print_times() { | |
| 2199 tty->cr(); | |
| 2200 tty->print_cr("Accumulated compiler times (for compiled methods only)"); | |
| 2201 tty->print_cr("------------------------------------------------"); | |
| 2202 //0000000000111111111122222222223333333333444444444455555555556666666666 | |
| 2203 //0123456789012345678901234567890123456789012345678901234567890123456789 | |
| 2204 tty->print_cr(" Total compilation time : %6.3f s", CompileBroker::_t_total_compilation.seconds()); | |
| 2205 tty->print_cr(" Standard compilation : %6.3f s, Average : %2.3f", | |
| 2206 CompileBroker::_t_standard_compilation.seconds(), | |
| 2207 CompileBroker::_t_standard_compilation.seconds() / CompileBroker::_total_standard_compile_count); | |
| 2208 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 | 2209 |
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2210 AbstractCompiler *comp = compiler(CompLevel_simple); |
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2211 if (comp != NULL) { |
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2212 comp->print_timers(); |
| 0 | 2213 } |
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2214 comp = compiler(CompLevel_full_optimization); |
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2215 if (comp != NULL) { |
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2216 comp->print_timers(); |
| 1783 | 2217 } |
| 0 | 2218 tty->cr(); |
| 8860 | 2219 tty->print_cr(" Total compiled methods : %6d methods", CompileBroker::_total_compile_count); |
| 2220 tty->print_cr(" Standard compilation : %6d methods", CompileBroker::_total_standard_compile_count); | |
| 2221 tty->print_cr(" On stack replacement : %6d methods", CompileBroker::_total_osr_compile_count); | |
| 0 | 2222 int tcb = CompileBroker::_sum_osr_bytes_compiled + CompileBroker::_sum_standard_bytes_compiled; |
| 2223 tty->print_cr(" Total compiled bytecodes : %6d bytes", tcb); | |
| 2224 tty->print_cr(" Standard compilation : %6d bytes", CompileBroker::_sum_standard_bytes_compiled); | |
| 2225 tty->print_cr(" On stack replacement : %6d bytes", CompileBroker::_sum_osr_bytes_compiled); | |
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2226 double tcs = CompileBroker::_t_total_compilation.seconds(); |
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2227 int bps = tcs == 0.0 ? 0 : (int)(tcb / tcs); |
| 0 | 2228 tty->print_cr(" Average compilation speed: %6d bytes/s", bps); |
|
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2229 #ifdef GRAAL |
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2230 for (unsigned int i = 0; i < sizeof(_compilers) / sizeof(AbstractCompiler*); i++) { |
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2231 AbstractCompiler* comp = _compilers[i]; |
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2232 if (comp != NULL) { |
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2233 CompilerStatistics* stats = comp->stats(); |
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2234 int bytecodes = stats->_sum_osr_bytes_compiled + stats->_sum_standard_bytes_compiled; |
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2235 if (bytecodes != 0) { |
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2236 double seconds = stats->_t_osr_compilation.seconds() + stats->_t_standard_compilation.seconds(); |
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2237 int bps = seconds == 0.0 ? 0 : (int) (bytecodes / seconds); |
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2238 tty->print_cr(" %7s compilation speed: %6d bytes/s {standard: %6.3f s, %6d bytes; osr: %6.3f s, %6d bytes}", |
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2239 comp->name(), bps, stats->_t_standard_compilation.seconds(), stats->_sum_standard_bytes_compiled, |
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2240 stats->_t_osr_compilation.seconds(), stats->_sum_osr_bytes_compiled); |
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2241 } |
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2242 } |
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2243 } |
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2244 #endif |
| 0 | 2245 tty->cr(); |
| 2246 tty->print_cr(" nmethod code size : %6d bytes", CompileBroker::_sum_nmethod_code_size); | |
| 2247 tty->print_cr(" nmethod total size : %6d bytes", CompileBroker::_sum_nmethod_size); | |
| 2248 } | |
| 2249 | |
| 2250 // Debugging output for failure | |
| 2251 void CompileBroker::print_last_compile() { | |
| 2252 if ( _last_compile_level != CompLevel_none && | |
| 2253 compiler(_last_compile_level) != NULL && | |
| 2254 _last_method_compiled != NULL && | |
| 2255 _last_compile_type != no_compile) { | |
| 2256 if (_last_compile_type == osr_compile) { | |
| 2257 tty->print_cr("Last parse: [osr]%d+++(%d) %s", | |
| 2258 _osr_compilation_id, _last_compile_level, _last_method_compiled); | |
| 2259 } else { | |
| 2260 tty->print_cr("Last parse: %d+++(%d) %s", | |
| 2261 _compilation_id, _last_compile_level, _last_method_compiled); | |
| 2262 } | |
| 2263 } | |
| 2264 } | |
| 2265 | |
| 2266 | |
| 2267 void CompileBroker::print_compiler_threads_on(outputStream* st) { | |
| 2268 #ifndef PRODUCT | |
| 2269 st->print_cr("Compiler thread printing unimplemented."); | |
| 2270 st->cr(); | |
| 2271 #endif | |
| 2272 } |