Mercurial > hg > graal-compiler
annotate src/share/vm/compiler/compileBroker.cpp @ 13074:78da3894b86f
8027593: performance drop with constrained codecache starting with hs25 b111
Summary: Fixed proper sweeping of small code cache sizes
Reviewed-by: kvn, iveresov
| author | anoll |
|---|---|
| date | Tue, 12 Nov 2013 09:32:50 +0100 |
| parents | a196f1aaec86 |
| children | 096c224171c4 7c0122ed05fb da862781b584 5656140324ed |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 10405 | 2 * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/systemDictionary.hpp" | |
| 27 #include "classfile/vmSymbols.hpp" | |
| 28 #include "code/codeCache.hpp" | |
| 29 #include "compiler/compileBroker.hpp" | |
| 30 #include "compiler/compileLog.hpp" | |
| 31 #include "compiler/compilerOracle.hpp" | |
| 32 #include "interpreter/linkResolver.hpp" | |
| 33 #include "memory/allocation.inline.hpp" | |
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34 #include "oops/methodData.hpp" |
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35 #include "oops/method.hpp" |
| 1972 | 36 #include "oops/oop.inline.hpp" |
| 37 #include "prims/nativeLookup.hpp" | |
| 38 #include "runtime/arguments.hpp" | |
| 39 #include "runtime/compilationPolicy.hpp" | |
| 40 #include "runtime/init.hpp" | |
| 41 #include "runtime/interfaceSupport.hpp" | |
| 42 #include "runtime/javaCalls.hpp" | |
| 43 #include "runtime/os.hpp" | |
| 44 #include "runtime/sharedRuntime.hpp" | |
| 45 #include "runtime/sweeper.hpp" | |
| 10405 | 46 #include "trace/tracing.hpp" |
| 1972 | 47 #include "utilities/dtrace.hpp" |
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48 #include "utilities/events.hpp" |
| 1972 | 49 #ifdef COMPILER1 |
| 50 #include "c1/c1_Compiler.hpp" | |
| 51 #endif | |
| 52 #ifdef COMPILER2 | |
| 53 #include "opto/c2compiler.hpp" | |
| 54 #endif | |
| 55 #ifdef SHARK | |
| 56 #include "shark/sharkCompiler.hpp" | |
| 57 #endif | |
| 0 | 58 |
| 59 #ifdef DTRACE_ENABLED | |
| 60 | |
| 61 // Only bother with this argument setup if dtrace is available | |
| 62 | |
| 4006 | 63 #ifndef USDT2 |
| 0 | 64 HS_DTRACE_PROBE_DECL8(hotspot, method__compile__begin, |
| 65 char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t); | |
| 66 HS_DTRACE_PROBE_DECL9(hotspot, method__compile__end, | |
| 67 char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t, bool); | |
| 68 | |
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69 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, comp_name) \ |
| 0 | 70 { \ |
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71 Symbol* klass_name = (method)->klass_name(); \ |
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72 Symbol* name = (method)->name(); \ |
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73 Symbol* signature = (method)->signature(); \ |
| 0 | 74 HS_DTRACE_PROBE8(hotspot, method__compile__begin, \ |
| 75 comp_name, strlen(comp_name), \ | |
| 76 klass_name->bytes(), klass_name->utf8_length(), \ | |
| 77 name->bytes(), name->utf8_length(), \ | |
| 78 signature->bytes(), signature->utf8_length()); \ | |
| 79 } | |
| 80 | |
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81 #define DTRACE_METHOD_COMPILE_END_PROBE(method, comp_name, success) \ |
| 0 | 82 { \ |
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83 Symbol* klass_name = (method)->klass_name(); \ |
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84 Symbol* name = (method)->name(); \ |
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85 Symbol* signature = (method)->signature(); \ |
| 0 | 86 HS_DTRACE_PROBE9(hotspot, method__compile__end, \ |
| 87 comp_name, strlen(comp_name), \ | |
| 88 klass_name->bytes(), klass_name->utf8_length(), \ | |
| 89 name->bytes(), name->utf8_length(), \ | |
| 90 signature->bytes(), signature->utf8_length(), (success)); \ | |
| 91 } | |
| 92 | |
| 4006 | 93 #else /* USDT2 */ |
| 94 | |
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95 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, comp_name) \ |
| 4006 | 96 { \ |
| 97 Symbol* klass_name = (method)->klass_name(); \ | |
| 98 Symbol* name = (method)->name(); \ | |
| 99 Symbol* signature = (method)->signature(); \ | |
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100 HOTSPOT_METHOD_COMPILE_BEGIN( \ |
| 4006 | 101 comp_name, strlen(comp_name), \ |
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102 (char *) klass_name->bytes(), klass_name->utf8_length(), \ |
| 4006 | 103 (char *) name->bytes(), name->utf8_length(), \ |
| 104 (char *) signature->bytes(), signature->utf8_length()); \ | |
| 105 } | |
| 106 | |
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107 #define DTRACE_METHOD_COMPILE_END_PROBE(method, comp_name, success) \ |
| 4006 | 108 { \ |
| 109 Symbol* klass_name = (method)->klass_name(); \ | |
| 110 Symbol* name = (method)->name(); \ | |
| 111 Symbol* signature = (method)->signature(); \ | |
| 112 HOTSPOT_METHOD_COMPILE_END( \ | |
| 113 comp_name, strlen(comp_name), \ | |
| 114 (char *) klass_name->bytes(), klass_name->utf8_length(), \ | |
| 115 (char *) name->bytes(), name->utf8_length(), \ | |
| 116 (char *) signature->bytes(), signature->utf8_length(), (success)); \ | |
| 117 } | |
| 118 #endif /* USDT2 */ | |
| 119 | |
| 0 | 120 #else // ndef DTRACE_ENABLED |
| 121 | |
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122 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, comp_name) |
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123 #define DTRACE_METHOD_COMPILE_END_PROBE(method, comp_name, success) |
| 0 | 124 |
| 125 #endif // ndef DTRACE_ENABLED | |
| 126 | |
| 127 bool CompileBroker::_initialized = false; | |
| 128 volatile bool CompileBroker::_should_block = false; | |
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129 volatile jint CompileBroker::_print_compilation_warning = 0; |
| 1202 | 130 volatile jint CompileBroker::_should_compile_new_jobs = run_compilation; |
| 0 | 131 |
| 132 // The installed compiler(s) | |
| 133 AbstractCompiler* CompileBroker::_compilers[2]; | |
| 134 | |
| 135 // These counters are used for assigning id's to each compilation | |
| 136 uint CompileBroker::_compilation_id = 0; | |
| 137 uint CompileBroker::_osr_compilation_id = 0; | |
| 138 | |
| 139 // Debugging information | |
| 140 int CompileBroker::_last_compile_type = no_compile; | |
| 141 int CompileBroker::_last_compile_level = CompLevel_none; | |
| 142 char CompileBroker::_last_method_compiled[CompileBroker::name_buffer_length]; | |
| 143 | |
| 144 // Performance counters | |
| 145 PerfCounter* CompileBroker::_perf_total_compilation = NULL; | |
| 146 PerfCounter* CompileBroker::_perf_osr_compilation = NULL; | |
| 147 PerfCounter* CompileBroker::_perf_standard_compilation = NULL; | |
| 148 | |
| 149 PerfCounter* CompileBroker::_perf_total_bailout_count = NULL; | |
| 150 PerfCounter* CompileBroker::_perf_total_invalidated_count = NULL; | |
| 151 PerfCounter* CompileBroker::_perf_total_compile_count = NULL; | |
| 152 PerfCounter* CompileBroker::_perf_total_osr_compile_count = NULL; | |
| 153 PerfCounter* CompileBroker::_perf_total_standard_compile_count = NULL; | |
| 154 | |
| 155 PerfCounter* CompileBroker::_perf_sum_osr_bytes_compiled = NULL; | |
| 156 PerfCounter* CompileBroker::_perf_sum_standard_bytes_compiled = NULL; | |
| 157 PerfCounter* CompileBroker::_perf_sum_nmethod_size = NULL; | |
| 158 PerfCounter* CompileBroker::_perf_sum_nmethod_code_size = NULL; | |
| 159 | |
| 160 PerfStringVariable* CompileBroker::_perf_last_method = NULL; | |
| 161 PerfStringVariable* CompileBroker::_perf_last_failed_method = NULL; | |
| 162 PerfStringVariable* CompileBroker::_perf_last_invalidated_method = NULL; | |
| 163 PerfVariable* CompileBroker::_perf_last_compile_type = NULL; | |
| 164 PerfVariable* CompileBroker::_perf_last_compile_size = NULL; | |
| 165 PerfVariable* CompileBroker::_perf_last_failed_type = NULL; | |
| 166 PerfVariable* CompileBroker::_perf_last_invalidated_type = NULL; | |
| 167 | |
| 168 // Timers and counters for generating statistics | |
| 169 elapsedTimer CompileBroker::_t_total_compilation; | |
| 170 elapsedTimer CompileBroker::_t_osr_compilation; | |
| 171 elapsedTimer CompileBroker::_t_standard_compilation; | |
| 172 | |
| 173 int CompileBroker::_total_bailout_count = 0; | |
| 174 int CompileBroker::_total_invalidated_count = 0; | |
| 175 int CompileBroker::_total_compile_count = 0; | |
| 176 int CompileBroker::_total_osr_compile_count = 0; | |
| 177 int CompileBroker::_total_standard_compile_count = 0; | |
| 178 | |
| 179 int CompileBroker::_sum_osr_bytes_compiled = 0; | |
| 180 int CompileBroker::_sum_standard_bytes_compiled = 0; | |
| 181 int CompileBroker::_sum_nmethod_size = 0; | |
| 182 int CompileBroker::_sum_nmethod_code_size = 0; | |
| 183 | |
| 10405 | 184 long CompileBroker::_peak_compilation_time = 0; |
| 185 | |
| 186 CompileQueue* CompileBroker::_c2_method_queue = NULL; | |
| 187 CompileQueue* CompileBroker::_c1_method_queue = NULL; | |
| 188 CompileTask* CompileBroker::_task_free_list = NULL; | |
| 0 | 189 |
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190 GrowableArray<CompilerThread*>* CompileBroker::_compiler_threads = NULL; |
| 0 | 191 |
| 192 | |
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193 class CompilationLog : public StringEventLog { |
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194 public: |
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195 CompilationLog() : StringEventLog("Compilation events") { |
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196 } |
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197 |
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198 void log_compile(JavaThread* thread, CompileTask* task) { |
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199 StringLogMessage lm; |
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200 stringStream sstr = lm.stream(); |
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201 // msg.time_stamp().update_to(tty->time_stamp().ticks()); |
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202 task->print_compilation(&sstr, NULL, true); |
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203 log(thread, "%s", (const char*)lm); |
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204 } |
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205 |
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206 void log_nmethod(JavaThread* thread, nmethod* nm) { |
| 4944 | 207 log(thread, "nmethod %d%s " INTPTR_FORMAT " code ["INTPTR_FORMAT ", " INTPTR_FORMAT "]", |
| 208 nm->compile_id(), nm->is_osr_method() ? "%" : "", | |
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209 nm, nm->code_begin(), nm->code_end()); |
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210 } |
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211 |
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212 void log_failure(JavaThread* thread, CompileTask* task, const char* reason, const char* retry_message) { |
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213 StringLogMessage lm; |
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214 lm.print("%4d COMPILE SKIPPED: %s", task->compile_id(), reason); |
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215 if (retry_message != NULL) { |
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216 lm.append(" (%s)", retry_message); |
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217 } |
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218 lm.print("\n"); |
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219 log(thread, "%s", (const char*)lm); |
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220 } |
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221 }; |
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222 |
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223 static CompilationLog* _compilation_log = NULL; |
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224 |
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225 void compileBroker_init() { |
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226 if (LogEvents) { |
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227 _compilation_log = new CompilationLog(); |
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228 } |
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229 } |
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230 |
| 0 | 231 CompileTaskWrapper::CompileTaskWrapper(CompileTask* task) { |
| 232 CompilerThread* thread = CompilerThread::current(); | |
| 233 thread->set_task(task); | |
| 234 CompileLog* log = thread->log(); | |
| 235 if (log != NULL) task->log_task_start(log); | |
| 236 } | |
| 237 | |
| 238 CompileTaskWrapper::~CompileTaskWrapper() { | |
| 239 CompilerThread* thread = CompilerThread::current(); | |
| 240 CompileTask* task = thread->task(); | |
| 241 CompileLog* log = thread->log(); | |
| 242 if (log != NULL) task->log_task_done(log); | |
| 243 thread->set_task(NULL); | |
| 244 task->set_code_handle(NULL); | |
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245 thread->set_env(NULL); |
| 0 | 246 if (task->is_blocking()) { |
| 247 MutexLocker notifier(task->lock(), thread); | |
| 248 task->mark_complete(); | |
| 249 // Notify the waiting thread that the compilation has completed. | |
| 250 task->lock()->notify_all(); | |
| 251 } else { | |
| 252 task->mark_complete(); | |
| 253 | |
| 254 // By convention, the compiling thread is responsible for | |
| 255 // recycling a non-blocking CompileTask. | |
| 256 CompileBroker::free_task(task); | |
| 257 } | |
| 258 } | |
| 259 | |
| 260 | |
| 261 // ------------------------------------------------------------------ | |
| 262 // CompileTask::initialize | |
| 263 void CompileTask::initialize(int compile_id, | |
| 264 methodHandle method, | |
| 265 int osr_bci, | |
| 266 int comp_level, | |
| 267 methodHandle hot_method, | |
| 268 int hot_count, | |
| 269 const char* comment, | |
| 270 bool is_blocking) { | |
| 271 assert(!_lock->is_locked(), "bad locking"); | |
| 272 | |
| 273 _compile_id = compile_id; | |
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274 _method = method(); |
| 7409 | 275 _method_holder = JNIHandles::make_global(method->method_holder()->klass_holder()); |
| 0 | 276 _osr_bci = osr_bci; |
| 277 _is_blocking = is_blocking; | |
| 278 _comp_level = comp_level; | |
| 279 _num_inlined_bytecodes = 0; | |
| 280 | |
| 281 _is_complete = false; | |
| 282 _is_success = false; | |
| 283 _code_handle = NULL; | |
| 284 | |
| 285 _hot_method = NULL; | |
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286 _hot_method_holder = NULL; |
| 0 | 287 _hot_count = hot_count; |
| 288 _time_queued = 0; // tidy | |
| 289 _comment = comment; | |
| 290 | |
| 291 if (LogCompilation) { | |
| 292 _time_queued = os::elapsed_counter(); | |
| 293 if (hot_method.not_null()) { | |
| 294 if (hot_method == method) { | |
| 295 _hot_method = _method; | |
| 296 } else { | |
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297 _hot_method = hot_method(); |
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298 // only add loader or mirror if different from _method_holder |
| 7409 | 299 _hot_method_holder = JNIHandles::make_global(hot_method->method_holder()->klass_holder()); |
| 0 | 300 } |
| 301 } | |
| 302 } | |
| 303 | |
| 304 _next = NULL; | |
| 305 } | |
| 306 | |
| 307 // ------------------------------------------------------------------ | |
| 308 // CompileTask::code/set_code | |
| 309 nmethod* CompileTask::code() const { | |
| 310 if (_code_handle == NULL) return NULL; | |
| 311 return _code_handle->code(); | |
| 312 } | |
| 313 void CompileTask::set_code(nmethod* nm) { | |
| 314 if (_code_handle == NULL && nm == NULL) return; | |
| 315 guarantee(_code_handle != NULL, ""); | |
| 316 _code_handle->set_code(nm); | |
| 317 if (nm == NULL) _code_handle = NULL; // drop the handle also | |
| 318 } | |
| 319 | |
| 320 // ------------------------------------------------------------------ | |
| 321 // CompileTask::free | |
| 322 void CompileTask::free() { | |
| 323 set_code(NULL); | |
| 324 assert(!_lock->is_locked(), "Should not be locked when freed"); | |
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325 JNIHandles::destroy_global(_method_holder); |
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326 JNIHandles::destroy_global(_hot_method_holder); |
| 0 | 327 } |
| 328 | |
| 329 | |
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330 void CompileTask::mark_on_stack() { |
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331 // Mark these methods as something redefine classes cannot remove. |
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332 _method->set_on_stack(true); |
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333 if (_hot_method != NULL) { |
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334 _hot_method->set_on_stack(true); |
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335 } |
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336 } |
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337 |
| 0 | 338 // ------------------------------------------------------------------ |
| 339 // CompileTask::print | |
| 340 void CompileTask::print() { | |
| 341 tty->print("<CompileTask compile_id=%d ", _compile_id); | |
| 342 tty->print("method="); | |
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343 _method->print_name(tty); |
| 0 | 344 tty->print_cr(" osr_bci=%d is_blocking=%s is_complete=%s is_success=%s>", |
| 345 _osr_bci, bool_to_str(_is_blocking), | |
| 346 bool_to_str(_is_complete), bool_to_str(_is_success)); | |
| 347 } | |
| 348 | |
| 1783 | 349 |
| 0 | 350 // ------------------------------------------------------------------ |
| 351 // CompileTask::print_line_on_error | |
| 352 // | |
| 353 // This function is called by fatal error handler when the thread | |
| 354 // causing troubles is a compiler thread. | |
| 355 // | |
| 356 // Do not grab any lock, do not allocate memory. | |
| 357 // | |
| 358 // Otherwise it's the same as CompileTask::print_line() | |
| 359 // | |
| 360 void CompileTask::print_line_on_error(outputStream* st, char* buf, int buflen) { | |
| 361 // print compiler name | |
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362 st->print("%s:", CompileBroker::compiler_name(comp_level())); |
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363 print_compilation(st); |
| 0 | 364 } |
| 365 | |
| 366 // ------------------------------------------------------------------ | |
| 367 // CompileTask::print_line | |
| 368 void CompileTask::print_line() { | |
| 369 ttyLocker ttyl; // keep the following output all in one block | |
| 370 // print compiler name if requested | |
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371 if (CIPrintCompilerName) tty->print("%s:", CompileBroker::compiler_name(comp_level())); |
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372 print_compilation(); |
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373 } |
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374 |
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375 |
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376 // ------------------------------------------------------------------ |
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377 // CompileTask::print_compilation_impl |
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378 void CompileTask::print_compilation_impl(outputStream* st, Method* method, int compile_id, int comp_level, |
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379 bool is_osr_method, int osr_bci, bool is_blocking, |
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380 const char* msg, bool short_form) { |
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381 if (!short_form) { |
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382 st->print("%7d ", (int) st->time_stamp().milliseconds()); // print timestamp |
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383 } |
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384 st->print("%4d ", compile_id); // print compilation number |
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385 |
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386 // For unloaded methods the transition to zombie occurs after the |
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387 // method is cleared so it's impossible to report accurate |
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388 // information for that case. |
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389 bool is_synchronized = false; |
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390 bool has_exception_handler = false; |
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391 bool is_native = false; |
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392 if (method != NULL) { |
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393 is_synchronized = method->is_synchronized(); |
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394 has_exception_handler = method->has_exception_handler(); |
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395 is_native = method->is_native(); |
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396 } |
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397 // method attributes |
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398 const char compile_type = is_osr_method ? '%' : ' '; |
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399 const char sync_char = is_synchronized ? 's' : ' '; |
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400 const char exception_char = has_exception_handler ? '!' : ' '; |
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401 const char blocking_char = is_blocking ? 'b' : ' '; |
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402 const char native_char = is_native ? 'n' : ' '; |
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403 |
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404 // print method attributes |
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405 st->print("%c%c%c%c%c ", compile_type, sync_char, exception_char, blocking_char, native_char); |
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406 |
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407 if (TieredCompilation) { |
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408 if (comp_level != -1) st->print("%d ", comp_level); |
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409 else st->print("- "); |
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410 } |
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411 st->print(" "); // more indent |
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412 |
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413 if (method == NULL) { |
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414 st->print("(method)"); |
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415 } else { |
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416 method->print_short_name(st); |
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417 if (is_osr_method) { |
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418 st->print(" @ %d", osr_bci); |
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419 } |
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420 if (method->is_native()) |
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421 st->print(" (native)"); |
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422 else |
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423 st->print(" (%d bytes)", method->code_size()); |
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424 } |
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425 |
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426 if (msg != NULL) { |
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427 st->print(" %s", msg); |
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428 } |
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429 if (!short_form) { |
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430 st->cr(); |
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431 } |
| 0 | 432 } |
| 433 | |
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434 // ------------------------------------------------------------------ |
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435 // CompileTask::print_inlining |
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436 void CompileTask::print_inlining(outputStream* st, ciMethod* method, int inline_level, int bci, const char* msg) { |
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437 // 1234567 |
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438 st->print(" "); // print timestamp |
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439 // 1234 |
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440 st->print(" "); // print compilation number |
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441 |
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442 // method attributes |
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443 if (method->is_loaded()) { |
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444 const char sync_char = method->is_synchronized() ? 's' : ' '; |
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445 const char exception_char = method->has_exception_handlers() ? '!' : ' '; |
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446 const char monitors_char = method->has_monitor_bytecodes() ? 'm' : ' '; |
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447 |
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448 // print method attributes |
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449 st->print(" %c%c%c ", sync_char, exception_char, monitors_char); |
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450 } else { |
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451 // %s!bn |
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452 st->print(" "); // print method attributes |
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453 } |
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454 |
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455 if (TieredCompilation) { |
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456 st->print(" "); |
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457 } |
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458 st->print(" "); // more indent |
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459 st->print(" "); // initial inlining indent |
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460 |
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461 for (int i = 0; i < inline_level; i++) st->print(" "); |
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462 |
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463 st->print("@ %d ", bci); // print bci |
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464 method->print_short_name(st); |
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465 if (method->is_loaded()) |
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466 st->print(" (%d bytes)", method->code_size()); |
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467 else |
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468 st->print(" (not loaded)"); |
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469 |
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470 if (msg != NULL) { |
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471 st->print(" %s", msg); |
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472 } |
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473 st->cr(); |
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474 } |
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475 |
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476 // ------------------------------------------------------------------ |
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477 // CompileTask::print_inline_indent |
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478 void CompileTask::print_inline_indent(int inline_level, outputStream* st) { |
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479 // 1234567 |
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480 st->print(" "); // print timestamp |
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481 // 1234 |
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482 st->print(" "); // print compilation number |
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483 // %s!bn |
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484 st->print(" "); // print method attributes |
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485 if (TieredCompilation) { |
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486 st->print(" "); |
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487 } |
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488 st->print(" "); // more indent |
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489 st->print(" "); // initial inlining indent |
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490 for (int i = 0; i < inline_level; i++) st->print(" "); |
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491 } |
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492 |
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493 // ------------------------------------------------------------------ |
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494 // CompileTask::print_compilation |
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495 void CompileTask::print_compilation(outputStream* st, const char* msg, bool short_form) { |
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496 bool is_osr_method = osr_bci() != InvocationEntryBci; |
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497 print_compilation_impl(st, method(), compile_id(), comp_level(), is_osr_method, osr_bci(), is_blocking(), msg, short_form); |
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498 } |
| 0 | 499 |
| 500 // ------------------------------------------------------------------ | |
| 501 // CompileTask::log_task | |
| 502 void CompileTask::log_task(xmlStream* log) { | |
| 503 Thread* thread = Thread::current(); | |
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504 methodHandle method(thread, this->method()); |
| 0 | 505 ResourceMark rm(thread); |
| 506 | |
| 507 // <task id='9' method='M' osr_bci='X' level='1' blocking='1' stamp='1.234'> | |
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508 log->print(" compile_id='%d'", _compile_id); |
| 0 | 509 if (_osr_bci != CompileBroker::standard_entry_bci) { |
| 510 log->print(" compile_kind='osr'"); // same as nmethod::compile_kind | |
| 511 } // else compile_kind='c2c' | |
| 512 if (!method.is_null()) log->method(method); | |
| 513 if (_osr_bci != CompileBroker::standard_entry_bci) { | |
| 514 log->print(" osr_bci='%d'", _osr_bci); | |
| 515 } | |
| 516 if (_comp_level != CompLevel_highest_tier) { | |
| 517 log->print(" level='%d'", _comp_level); | |
| 518 } | |
| 519 if (_is_blocking) { | |
| 520 log->print(" blocking='1'"); | |
| 521 } | |
| 522 log->stamp(); | |
| 523 } | |
| 524 | |
| 525 | |
| 526 // ------------------------------------------------------------------ | |
| 527 // CompileTask::log_task_queued | |
| 528 void CompileTask::log_task_queued() { | |
| 529 Thread* thread = Thread::current(); | |
| 530 ttyLocker ttyl; | |
| 531 ResourceMark rm(thread); | |
| 532 | |
| 533 xtty->begin_elem("task_queued"); | |
| 534 log_task(xtty); | |
| 535 if (_comment != NULL) { | |
| 536 xtty->print(" comment='%s'", _comment); | |
| 537 } | |
| 538 if (_hot_method != NULL) { | |
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539 methodHandle hot(thread, _hot_method); |
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540 methodHandle method(thread, _method); |
| 0 | 541 if (hot() != method()) { |
| 542 xtty->method(hot); | |
| 543 } | |
| 544 } | |
| 545 if (_hot_count != 0) { | |
| 546 xtty->print(" hot_count='%d'", _hot_count); | |
| 547 } | |
| 548 xtty->end_elem(); | |
| 549 } | |
| 550 | |
| 551 | |
| 552 // ------------------------------------------------------------------ | |
| 553 // CompileTask::log_task_start | |
| 554 void CompileTask::log_task_start(CompileLog* log) { | |
| 555 log->begin_head("task"); | |
| 556 log_task(log); | |
| 557 log->end_head(); | |
| 558 } | |
| 559 | |
| 560 | |
| 561 // ------------------------------------------------------------------ | |
| 562 // CompileTask::log_task_done | |
| 563 void CompileTask::log_task_done(CompileLog* log) { | |
| 564 Thread* thread = Thread::current(); | |
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565 methodHandle method(thread, this->method()); |
| 0 | 566 ResourceMark rm(thread); |
| 567 | |
| 568 // <task_done ... stamp='1.234'> </task> | |
| 569 nmethod* nm = code(); | |
| 570 log->begin_elem("task_done success='%d' nmsize='%d' count='%d'", | |
| 1748 | 571 _is_success, nm == NULL ? 0 : nm->content_size(), |
| 0 | 572 method->invocation_count()); |
| 573 int bec = method->backedge_count(); | |
| 574 if (bec != 0) log->print(" backedge_count='%d'", bec); | |
| 575 // Note: "_is_complete" is about to be set, but is not. | |
| 576 if (_num_inlined_bytecodes != 0) { | |
| 577 log->print(" inlined_bytes='%d'", _num_inlined_bytecodes); | |
| 578 } | |
| 579 log->stamp(); | |
| 580 log->end_elem(); | |
| 581 log->tail("task"); | |
| 582 log->clear_identities(); // next task will have different CI | |
| 583 if (log->unflushed_count() > 2000) { | |
| 584 log->flush(); | |
| 585 } | |
| 586 log->mark_file_end(); | |
| 587 } | |
| 588 | |
| 589 | |
| 590 | |
| 591 // Add a CompileTask to a CompileQueue | |
| 592 void CompileQueue::add(CompileTask* task) { | |
| 593 assert(lock()->owned_by_self(), "must own lock"); | |
| 594 | |
| 595 task->set_next(NULL); | |
| 1783 | 596 task->set_prev(NULL); |
| 0 | 597 |
| 598 if (_last == NULL) { | |
| 599 // The compile queue is empty. | |
| 600 assert(_first == NULL, "queue is empty"); | |
| 601 _first = task; | |
| 602 _last = task; | |
| 603 } else { | |
| 604 // Append the task to the queue. | |
| 605 assert(_last->next() == NULL, "not last"); | |
| 606 _last->set_next(task); | |
| 1783 | 607 task->set_prev(_last); |
| 0 | 608 _last = task; |
| 609 } | |
| 1783 | 610 ++_size; |
| 0 | 611 |
| 612 // Mark the method as being in the compile queue. | |
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613 task->method()->set_queued_for_compilation(); |
| 0 | 614 |
| 615 if (CIPrintCompileQueue) { | |
| 616 print(); | |
| 617 } | |
| 618 | |
| 619 if (LogCompilation && xtty != NULL) { | |
| 620 task->log_task_queued(); | |
| 621 } | |
| 622 | |
| 623 // Notify CompilerThreads that a task is available. | |
| 1783 | 624 lock()->notify_all(); |
| 0 | 625 } |
| 626 | |
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627 void CompileQueue::delete_all() { |
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628 assert(lock()->owned_by_self(), "must own lock"); |
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629 if (_first != NULL) { |
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630 for (CompileTask* task = _first; task != NULL; task = task->next()) { |
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631 delete task; |
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632 } |
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633 _first = NULL; |
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634 } |
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635 } |
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636 |
| 0 | 637 // ------------------------------------------------------------------ |
| 638 // CompileQueue::get | |
| 639 // | |
| 640 // Get the next CompileTask from a CompileQueue | |
| 641 CompileTask* CompileQueue::get() { | |
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642 NMethodSweeper::possibly_sweep(); |
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643 |
| 0 | 644 MutexLocker locker(lock()); |
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645 // If _first is NULL we have no more compile jobs. There are two reasons for |
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646 // having no compile jobs: First, we compiled everything we wanted. Second, |
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647 // we ran out of code cache so compilation has been disabled. In the latter |
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648 // case we perform code cache sweeps to free memory such that we can re-enable |
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649 // compilation. |
| 0 | 650 while (_first == NULL) { |
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651 // Exit loop if compilation is disabled forever |
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652 if (CompileBroker::is_compilation_disabled_forever()) { |
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653 return NULL; |
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654 } |
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655 |
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656 if (UseCodeCacheFlushing && !CompileBroker::should_compile_new_jobs()) { |
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657 // Wait a certain amount of time to possibly do another sweep. |
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658 // We must wait until stack scanning has happened so that we can |
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659 // transition a method's state from 'not_entrant' to 'zombie'. |
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660 long wait_time = NmethodSweepCheckInterval * 1000; |
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661 if (FLAG_IS_DEFAULT(NmethodSweepCheckInterval)) { |
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662 // Only one thread at a time can do sweeping. Scale the |
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663 // wait time according to the number of compiler threads. |
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664 // As a result, the next sweep is likely to happen every 100ms |
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665 // with an arbitrary number of threads that do sweeping. |
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666 wait_time = 100 * CICompilerCount; |
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667 } |
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668 bool timeout = lock()->wait(!Mutex::_no_safepoint_check_flag, wait_time); |
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669 if (timeout) { |
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670 MutexUnlocker ul(lock()); |
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671 NMethodSweeper::possibly_sweep(); |
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672 } |
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673 } else { |
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674 // If there are no compilation tasks and we can compile new jobs |
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675 // (i.e., there is enough free space in the code cache) there is |
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676 // no need to invoke the sweeper. As a result, the hotness of methods |
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677 // remains unchanged. This behavior is desired, since we want to keep |
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678 // the stable state, i.e., we do not want to evict methods from the |
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679 // code cache if it is unnecessary. |
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680 // We need a timed wait here, since compiler threads can exit if compilation |
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681 // is disabled forever. We use 5 seconds wait time; the exiting of compiler threads |
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682 // is not critical and we do not want idle compiler threads to wake up too often. |
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683 lock()->wait(!Mutex::_no_safepoint_check_flag, 5*1000); |
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684 } |
| 0 | 685 } |
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686 |
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687 if (CompileBroker::is_compilation_disabled_forever()) { |
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688 return NULL; |
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689 } |
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690 |
| 1783 | 691 CompileTask* task = CompilationPolicy::policy()->select_task(this); |
| 692 remove(task); | |
| 693 return task; | |
| 694 } | |
| 0 | 695 |
| 1783 | 696 void CompileQueue::remove(CompileTask* task) |
| 697 { | |
| 698 assert(lock()->owned_by_self(), "must own lock"); | |
| 699 if (task->prev() != NULL) { | |
| 700 task->prev()->set_next(task->next()); | |
| 701 } else { | |
| 702 // max is the first element | |
| 703 assert(task == _first, "Sanity"); | |
| 704 _first = task->next(); | |
| 0 | 705 } |
| 706 | |
| 1783 | 707 if (task->next() != NULL) { |
| 708 task->next()->set_prev(task->prev()); | |
| 709 } else { | |
| 710 // max is the last element | |
| 711 assert(task == _last, "Sanity"); | |
| 712 _last = task->prev(); | |
| 713 } | |
| 714 --_size; | |
| 0 | 715 } |
| 716 | |
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717 // methods in the compile queue need to be marked as used on the stack |
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718 // so that they don't get reclaimed by Redefine Classes |
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719 void CompileQueue::mark_on_stack() { |
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720 CompileTask* task = _first; |
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721 while (task != NULL) { |
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722 task->mark_on_stack(); |
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723 task = task->next(); |
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724 } |
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725 } |
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726 |
| 0 | 727 // ------------------------------------------------------------------ |
| 728 // CompileQueue::print | |
| 729 void CompileQueue::print() { | |
| 730 tty->print_cr("Contents of %s", name()); | |
| 731 tty->print_cr("----------------------"); | |
| 732 CompileTask* task = _first; | |
| 733 while (task != NULL) { | |
| 734 task->print_line(); | |
| 735 task = task->next(); | |
| 736 } | |
| 737 tty->print_cr("----------------------"); | |
| 738 } | |
| 739 | |
| 740 CompilerCounters::CompilerCounters(const char* thread_name, int instance, TRAPS) { | |
| 741 | |
| 742 _current_method[0] = '\0'; | |
| 743 _compile_type = CompileBroker::no_compile; | |
| 744 | |
| 745 if (UsePerfData) { | |
| 746 ResourceMark rm; | |
| 747 | |
| 748 // create the thread instance name space string - don't create an | |
| 749 // instance subspace if instance is -1 - keeps the adapterThread | |
| 750 // counters from having a ".0" namespace. | |
| 751 const char* thread_i = (instance == -1) ? thread_name : | |
| 752 PerfDataManager::name_space(thread_name, instance); | |
| 753 | |
| 754 | |
| 755 char* name = PerfDataManager::counter_name(thread_i, "method"); | |
| 756 _perf_current_method = | |
| 757 PerfDataManager::create_string_variable(SUN_CI, name, | |
| 758 cmname_buffer_length, | |
| 759 _current_method, CHECK); | |
| 760 | |
| 761 name = PerfDataManager::counter_name(thread_i, "type"); | |
| 762 _perf_compile_type = PerfDataManager::create_variable(SUN_CI, name, | |
| 763 PerfData::U_None, | |
| 764 (jlong)_compile_type, | |
| 765 CHECK); | |
| 766 | |
| 767 name = PerfDataManager::counter_name(thread_i, "time"); | |
| 768 _perf_time = PerfDataManager::create_counter(SUN_CI, name, | |
| 769 PerfData::U_Ticks, CHECK); | |
| 770 | |
| 771 name = PerfDataManager::counter_name(thread_i, "compiles"); | |
| 772 _perf_compiles = PerfDataManager::create_counter(SUN_CI, name, | |
| 773 PerfData::U_Events, CHECK); | |
| 774 } | |
| 775 } | |
| 776 | |
| 777 // ------------------------------------------------------------------ | |
| 778 // CompileBroker::compilation_init | |
| 779 // | |
| 780 // Initialize the Compilation object | |
| 781 void CompileBroker::compilation_init() { | |
| 782 _last_method_compiled[0] = '\0'; | |
| 783 | |
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784 // No need to initialize compilation system if we do not use it. |
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785 if (!UseCompiler) { |
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786 return; |
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787 } |
| 1970 | 788 #ifndef SHARK |
| 0 | 789 // Set the interface to the current compiler(s). |
| 1783 | 790 int c1_count = CompilationPolicy::policy()->compiler_count(CompLevel_simple); |
| 791 int c2_count = CompilationPolicy::policy()->compiler_count(CompLevel_full_optimization); | |
| 0 | 792 #ifdef COMPILER1 |
| 1783 | 793 if (c1_count > 0) { |
| 794 _compilers[0] = new Compiler(); | |
| 795 } | |
| 0 | 796 #endif // COMPILER1 |
| 797 | |
| 798 #ifdef COMPILER2 | |
| 1783 | 799 if (c2_count > 0) { |
| 800 _compilers[1] = new C2Compiler(); | |
| 801 } | |
| 0 | 802 #endif // COMPILER2 |
| 803 | |
| 1970 | 804 #else // SHARK |
| 805 int c1_count = 0; | |
| 806 int c2_count = 1; | |
| 807 | |
| 808 _compilers[1] = new SharkCompiler(); | |
| 809 #endif // SHARK | |
| 1692 | 810 |
| 0 | 811 // Initialize the CompileTask free list |
| 812 _task_free_list = NULL; | |
| 813 | |
| 814 // Start the CompilerThreads | |
| 1783 | 815 init_compiler_threads(c1_count, c2_count); |
| 0 | 816 // totalTime performance counter is always created as it is required |
| 817 // by the implementation of java.lang.management.CompilationMBean. | |
| 818 { | |
| 819 EXCEPTION_MARK; | |
| 820 _perf_total_compilation = | |
| 821 PerfDataManager::create_counter(JAVA_CI, "totalTime", | |
| 822 PerfData::U_Ticks, CHECK); | |
| 823 } | |
| 824 | |
| 825 | |
| 826 if (UsePerfData) { | |
| 827 | |
| 828 EXCEPTION_MARK; | |
| 829 | |
| 830 // create the jvmstat performance counters | |
| 831 _perf_osr_compilation = | |
| 832 PerfDataManager::create_counter(SUN_CI, "osrTime", | |
| 833 PerfData::U_Ticks, CHECK); | |
| 834 | |
| 835 _perf_standard_compilation = | |
| 836 PerfDataManager::create_counter(SUN_CI, "standardTime", | |
| 837 PerfData::U_Ticks, CHECK); | |
| 838 | |
| 839 _perf_total_bailout_count = | |
| 840 PerfDataManager::create_counter(SUN_CI, "totalBailouts", | |
| 841 PerfData::U_Events, CHECK); | |
| 842 | |
| 843 _perf_total_invalidated_count = | |
| 844 PerfDataManager::create_counter(SUN_CI, "totalInvalidates", | |
| 845 PerfData::U_Events, CHECK); | |
| 846 | |
| 847 _perf_total_compile_count = | |
| 848 PerfDataManager::create_counter(SUN_CI, "totalCompiles", | |
| 849 PerfData::U_Events, CHECK); | |
| 850 _perf_total_osr_compile_count = | |
| 851 PerfDataManager::create_counter(SUN_CI, "osrCompiles", | |
| 852 PerfData::U_Events, CHECK); | |
| 853 | |
| 854 _perf_total_standard_compile_count = | |
| 855 PerfDataManager::create_counter(SUN_CI, "standardCompiles", | |
| 856 PerfData::U_Events, CHECK); | |
| 857 | |
| 858 _perf_sum_osr_bytes_compiled = | |
| 859 PerfDataManager::create_counter(SUN_CI, "osrBytes", | |
| 860 PerfData::U_Bytes, CHECK); | |
| 861 | |
| 862 _perf_sum_standard_bytes_compiled = | |
| 863 PerfDataManager::create_counter(SUN_CI, "standardBytes", | |
| 864 PerfData::U_Bytes, CHECK); | |
| 865 | |
| 866 _perf_sum_nmethod_size = | |
| 867 PerfDataManager::create_counter(SUN_CI, "nmethodSize", | |
| 868 PerfData::U_Bytes, CHECK); | |
| 869 | |
| 870 _perf_sum_nmethod_code_size = | |
| 871 PerfDataManager::create_counter(SUN_CI, "nmethodCodeSize", | |
| 872 PerfData::U_Bytes, CHECK); | |
| 873 | |
| 874 _perf_last_method = | |
| 875 PerfDataManager::create_string_variable(SUN_CI, "lastMethod", | |
| 876 CompilerCounters::cmname_buffer_length, | |
| 877 "", CHECK); | |
| 878 | |
| 879 _perf_last_failed_method = | |
| 880 PerfDataManager::create_string_variable(SUN_CI, "lastFailedMethod", | |
| 881 CompilerCounters::cmname_buffer_length, | |
| 882 "", CHECK); | |
| 883 | |
| 884 _perf_last_invalidated_method = | |
| 885 PerfDataManager::create_string_variable(SUN_CI, "lastInvalidatedMethod", | |
| 886 CompilerCounters::cmname_buffer_length, | |
| 887 "", CHECK); | |
| 888 | |
| 889 _perf_last_compile_type = | |
| 890 PerfDataManager::create_variable(SUN_CI, "lastType", | |
| 891 PerfData::U_None, | |
| 892 (jlong)CompileBroker::no_compile, | |
| 893 CHECK); | |
| 894 | |
| 895 _perf_last_compile_size = | |
| 896 PerfDataManager::create_variable(SUN_CI, "lastSize", | |
| 897 PerfData::U_Bytes, | |
| 898 (jlong)CompileBroker::no_compile, | |
| 899 CHECK); | |
| 900 | |
| 901 | |
| 902 _perf_last_failed_type = | |
| 903 PerfDataManager::create_variable(SUN_CI, "lastFailedType", | |
| 904 PerfData::U_None, | |
| 905 (jlong)CompileBroker::no_compile, | |
| 906 CHECK); | |
| 907 | |
| 908 _perf_last_invalidated_type = | |
| 909 PerfDataManager::create_variable(SUN_CI, "lastInvalidatedType", | |
| 910 PerfData::U_None, | |
| 911 (jlong)CompileBroker::no_compile, | |
| 912 CHECK); | |
| 913 } | |
| 914 | |
| 915 _initialized = true; | |
| 916 } | |
| 917 | |
| 918 | |
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919 CompilerThread* CompileBroker::make_compiler_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, |
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920 AbstractCompiler* comp, TRAPS) { |
| 0 | 921 CompilerThread* compiler_thread = NULL; |
| 922 | |
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923 Klass* k = |
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924 SystemDictionary::resolve_or_fail(vmSymbols::java_lang_Thread(), |
| 0 | 925 true, CHECK_0); |
| 926 instanceKlassHandle klass (THREAD, k); | |
| 927 instanceHandle thread_oop = klass->allocate_instance_handle(CHECK_0); | |
| 928 Handle string = java_lang_String::create_from_str(name, CHECK_0); | |
| 929 | |
| 930 // Initialize thread_oop to put it into the system threadGroup | |
| 931 Handle thread_group (THREAD, Universe::system_thread_group()); | |
| 932 JavaValue result(T_VOID); | |
| 933 JavaCalls::call_special(&result, thread_oop, | |
| 934 klass, | |
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935 vmSymbols::object_initializer_name(), |
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936 vmSymbols::threadgroup_string_void_signature(), |
| 0 | 937 thread_group, |
| 938 string, | |
| 939 CHECK_0); | |
| 940 | |
| 941 { | |
| 942 MutexLocker mu(Threads_lock, THREAD); | |
| 943 compiler_thread = new CompilerThread(queue, counters); | |
| 944 // At this point the new CompilerThread data-races with this startup | |
| 945 // thread (which I believe is the primoridal thread and NOT the VM | |
| 946 // thread). This means Java bytecodes being executed at startup can | |
| 947 // queue compile jobs which will run at whatever default priority the | |
| 948 // newly created CompilerThread runs at. | |
| 949 | |
| 950 | |
| 951 // At this point it may be possible that no osthread was created for the | |
| 952 // JavaThread due to lack of memory. We would have to throw an exception | |
| 953 // in that case. However, since this must work and we do not allow | |
| 954 // exceptions anyway, check and abort if this fails. | |
| 955 | |
| 956 if (compiler_thread == NULL || compiler_thread->osthread() == NULL){ | |
| 957 vm_exit_during_initialization("java.lang.OutOfMemoryError", | |
| 958 "unable to create new native thread"); | |
| 959 } | |
| 960 | |
| 961 java_lang_Thread::set_thread(thread_oop(), compiler_thread); | |
| 962 | |
| 963 // Note that this only sets the JavaThread _priority field, which by | |
| 964 // definition is limited to Java priorities and not OS priorities. | |
| 965 // The os-priority is set in the CompilerThread startup code itself | |
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966 |
| 0 | 967 java_lang_Thread::set_priority(thread_oop(), NearMaxPriority); |
|
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968 |
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969 // Note that we cannot call os::set_priority because it expects Java |
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970 // priorities and we are *explicitly* using OS priorities so that it's |
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971 // possible to set the compiler thread priority higher than any Java |
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972 // thread. |
| 0 | 973 |
|
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974 int native_prio = CompilerThreadPriority; |
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975 if (native_prio == -1) { |
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976 if (UseCriticalCompilerThreadPriority) { |
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977 native_prio = os::java_to_os_priority[CriticalPriority]; |
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978 } else { |
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979 native_prio = os::java_to_os_priority[NearMaxPriority]; |
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980 } |
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981 } |
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982 os::set_native_priority(compiler_thread, native_prio); |
| 0 | 983 |
| 984 java_lang_Thread::set_daemon(thread_oop()); | |
| 985 | |
| 986 compiler_thread->set_threadObj(thread_oop()); | |
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987 compiler_thread->set_compiler(comp); |
| 0 | 988 Threads::add(compiler_thread); |
| 989 Thread::start(compiler_thread); | |
| 990 } | |
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991 |
| 0 | 992 // Let go of Threads_lock before yielding |
| 993 os::yield(); // make sure that the compiler thread is started early (especially helpful on SOLARIS) | |
| 994 | |
| 995 return compiler_thread; | |
| 996 } | |
| 997 | |
| 998 | |
| 1783 | 999 void CompileBroker::init_compiler_threads(int c1_compiler_count, int c2_compiler_count) { |
| 0 | 1000 EXCEPTION_MARK; |
| 2447 | 1001 #if !defined(ZERO) && !defined(SHARK) |
| 1783 | 1002 assert(c2_compiler_count > 0 || c1_compiler_count > 0, "No compilers?"); |
| 2447 | 1003 #endif // !ZERO && !SHARK |
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1004 // Initialize the compilation queue |
| 1783 | 1005 if (c2_compiler_count > 0) { |
| 1006 _c2_method_queue = new CompileQueue("C2MethodQueue", MethodCompileQueue_lock); | |
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1007 _compilers[1]->set_num_compiler_threads(c2_compiler_count); |
| 1783 | 1008 } |
| 1009 if (c1_compiler_count > 0) { | |
| 1010 _c1_method_queue = new CompileQueue("C1MethodQueue", MethodCompileQueue_lock); | |
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1011 _compilers[0]->set_num_compiler_threads(c1_compiler_count); |
| 1783 | 1012 } |
| 0 | 1013 |
| 1783 | 1014 int compiler_count = c1_compiler_count + c2_compiler_count; |
| 1015 | |
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1016 _compiler_threads = |
| 6197 | 1017 new (ResourceObj::C_HEAP, mtCompiler) GrowableArray<CompilerThread*>(compiler_count, true); |
| 0 | 1018 |
| 1019 char name_buffer[256]; | |
| 1783 | 1020 for (int i = 0; i < c2_compiler_count; i++) { |
| 0 | 1021 // Create a name for our thread. |
| 1783 | 1022 sprintf(name_buffer, "C2 CompilerThread%d", i); |
| 0 | 1023 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK); |
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1024 // Shark and C2 |
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1025 CompilerThread* new_thread = make_compiler_thread(name_buffer, _c2_method_queue, counters, _compilers[1], CHECK); |
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1026 _compiler_threads->append(new_thread); |
| 0 | 1027 } |
| 1783 | 1028 |
| 1029 for (int i = c2_compiler_count; i < compiler_count; i++) { | |
| 1030 // Create a name for our thread. | |
| 1031 sprintf(name_buffer, "C1 CompilerThread%d", i); | |
| 1032 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK); | |
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1033 // C1 |
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1034 CompilerThread* new_thread = make_compiler_thread(name_buffer, _c1_method_queue, counters, _compilers[0], CHECK); |
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1035 _compiler_threads->append(new_thread); |
| 1783 | 1036 } |
| 1037 | |
| 0 | 1038 if (UsePerfData) { |
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1039 PerfDataManager::create_constant(SUN_CI, "threads", PerfData::U_Bytes, compiler_count, CHECK); |
| 0 | 1040 } |
| 1041 } | |
| 1042 | |
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1043 |
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1044 // Set the methods on the stack as on_stack so that redefine classes doesn't |
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1045 // reclaim them |
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1046 void CompileBroker::mark_on_stack() { |
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1047 if (_c2_method_queue != NULL) { |
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1048 _c2_method_queue->mark_on_stack(); |
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1049 } |
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1050 if (_c1_method_queue != NULL) { |
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1051 _c1_method_queue->mark_on_stack(); |
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1052 } |
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1053 } |
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1054 |
| 0 | 1055 // ------------------------------------------------------------------ |
| 1056 // CompileBroker::compile_method | |
| 1057 // | |
| 1058 // Request compilation of a method. | |
| 1059 void CompileBroker::compile_method_base(methodHandle method, | |
| 1060 int osr_bci, | |
| 1061 int comp_level, | |
| 1062 methodHandle hot_method, | |
| 1063 int hot_count, | |
| 1064 const char* comment, | |
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1065 Thread* thread) { |
| 0 | 1066 // do nothing if compiler thread(s) is not available |
| 1067 if (!_initialized ) { | |
| 1068 return; | |
| 1069 } | |
| 1070 | |
| 1071 guarantee(!method->is_abstract(), "cannot compile abstract methods"); | |
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1072 assert(method->method_holder()->oop_is_instance(), |
| 0 | 1073 "sanity check"); |
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1074 assert(!method->method_holder()->is_not_initialized(), |
| 0 | 1075 "method holder must be initialized"); |
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1076 assert(!method->is_method_handle_intrinsic(), "do not enqueue these guys"); |
| 0 | 1077 |
| 1078 if (CIPrintRequests) { | |
| 1079 tty->print("request: "); | |
| 1080 method->print_short_name(tty); | |
| 1081 if (osr_bci != InvocationEntryBci) { | |
| 1082 tty->print(" osr_bci: %d", osr_bci); | |
| 1083 } | |
| 1084 tty->print(" comment: %s count: %d", comment, hot_count); | |
| 1085 if (!hot_method.is_null()) { | |
| 1086 tty->print(" hot: "); | |
| 1087 if (hot_method() != method()) { | |
| 1088 hot_method->print_short_name(tty); | |
| 1089 } else { | |
| 1090 tty->print("yes"); | |
| 1091 } | |
| 1092 } | |
| 1093 tty->cr(); | |
| 1094 } | |
| 1095 | |
| 1096 // A request has been made for compilation. Before we do any | |
| 1097 // real work, check to see if the method has been compiled | |
| 1098 // in the meantime with a definitive result. | |
| 1099 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
| 1100 return; | |
| 1101 } | |
| 1102 | |
| 2403 | 1103 #ifndef PRODUCT |
| 1104 if (osr_bci != -1 && !FLAG_IS_DEFAULT(OSROnlyBCI)) { | |
| 1105 if ((OSROnlyBCI > 0) ? (OSROnlyBCI != osr_bci) : (-OSROnlyBCI == osr_bci)) { | |
| 1106 // Positive OSROnlyBCI means only compile that bci. Negative means don't compile that BCI. | |
| 1107 return; | |
| 1108 } | |
| 1109 } | |
| 1110 #endif | |
| 1783 | 1111 |
| 0 | 1112 // If this method is already in the compile queue, then |
| 1113 // we do not block the current thread. | |
| 1114 if (compilation_is_in_queue(method, osr_bci)) { | |
| 1115 // We may want to decay our counter a bit here to prevent | |
| 1116 // multiple denied requests for compilation. This is an | |
| 1117 // open compilation policy issue. Note: The other possibility, | |
| 1118 // in the case that this is a blocking compile request, is to have | |
| 1119 // all subsequent blocking requesters wait for completion of | |
| 1120 // ongoing compiles. Note that in this case we'll need a protocol | |
| 1121 // for freeing the associated compile tasks. [Or we could have | |
| 1122 // a single static monitor on which all these waiters sleep.] | |
| 1123 return; | |
| 1124 } | |
| 1125 | |
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1126 // If the requesting thread is holding the pending list lock |
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1127 // then we just return. We can't risk blocking while holding |
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1128 // the pending list lock or a 3-way deadlock may occur |
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1129 // between the reference handler thread, a GC (instigated |
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1130 // by a compiler thread), and compiled method registration. |
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1131 if (InstanceRefKlass::owns_pending_list_lock(JavaThread::current())) { |
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1132 return; |
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1133 } |
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1134 |
| 0 | 1135 // Outputs from the following MutexLocker block: |
| 1136 CompileTask* task = NULL; | |
| 1137 bool blocking = false; | |
| 1783 | 1138 CompileQueue* queue = compile_queue(comp_level); |
| 0 | 1139 |
| 1140 // Acquire our lock. | |
| 1141 { | |
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1142 MutexLocker locker(queue->lock(), thread); |
| 0 | 1143 |
| 1144 // Make sure the method has not slipped into the queues since | |
| 1145 // last we checked; note that those checks were "fast bail-outs". | |
| 1146 // Here we need to be more careful, see 14012000 below. | |
| 1147 if (compilation_is_in_queue(method, osr_bci)) { | |
| 1148 return; | |
| 1149 } | |
| 1150 | |
| 1151 // We need to check again to see if the compilation has | |
| 1152 // completed. A previous compilation may have registered | |
| 1153 // some result. | |
| 1154 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
| 1155 return; | |
| 1156 } | |
| 1157 | |
| 1158 // We now know that this compilation is not pending, complete, | |
| 1159 // or prohibited. Assign a compile_id to this compilation | |
| 1160 // and check to see if it is in our [Start..Stop) range. | |
| 1161 uint compile_id = assign_compile_id(method, osr_bci); | |
| 1162 if (compile_id == 0) { | |
| 1163 // The compilation falls outside the allowed range. | |
| 1164 return; | |
| 1165 } | |
| 1166 | |
| 1167 // Should this thread wait for completion of the compile? | |
| 1168 blocking = is_compile_blocking(method, osr_bci); | |
| 1169 | |
| 1170 // We will enter the compilation in the queue. | |
| 1171 // 14012000: Note that this sets the queued_for_compile bits in | |
| 1172 // the target method. We can now reason that a method cannot be | |
| 1173 // queued for compilation more than once, as follows: | |
| 1174 // Before a thread queues a task for compilation, it first acquires | |
| 1175 // the compile queue lock, then checks if the method's queued bits | |
| 1176 // are set or it has already been compiled. Thus there can not be two | |
| 1177 // instances of a compilation task for the same method on the | |
| 1178 // compilation queue. Consider now the case where the compilation | |
| 1179 // thread has already removed a task for that method from the queue | |
| 1180 // and is in the midst of compiling it. In this case, the | |
| 1181 // queued_for_compile bits must be set in the method (and these | |
| 1182 // will be visible to the current thread, since the bits were set | |
| 1183 // under protection of the compile queue lock, which we hold now. | |
| 1184 // When the compilation completes, the compiler thread first sets | |
| 1185 // the compilation result and then clears the queued_for_compile | |
| 1186 // bits. Neither of these actions are protected by a barrier (or done | |
| 1187 // under the protection of a lock), so the only guarantee we have | |
| 1188 // (on machines with TSO (Total Store Order)) is that these values | |
| 1189 // will update in that order. As a result, the only combinations of | |
| 1190 // these bits that the current thread will see are, in temporal order: | |
| 1191 // <RESULT, QUEUE> : | |
| 1192 // <0, 1> : in compile queue, but not yet compiled | |
| 1193 // <1, 1> : compiled but queue bit not cleared | |
| 1194 // <1, 0> : compiled and queue bit cleared | |
| 1195 // Because we first check the queue bits then check the result bits, | |
| 1196 // we are assured that we cannot introduce a duplicate task. | |
| 1197 // Note that if we did the tests in the reverse order (i.e. check | |
| 1198 // result then check queued bit), we could get the result bit before | |
| 1199 // the compilation completed, and the queue bit after the compilation | |
| 1200 // completed, and end up introducing a "duplicate" (redundant) task. | |
| 1201 // In that case, the compiler thread should first check if a method | |
| 1202 // has already been compiled before trying to compile it. | |
| 1203 // NOTE: in the event that there are multiple compiler threads and | |
| 1204 // there is de-optimization/recompilation, things will get hairy, | |
| 1205 // and in that case it's best to protect both the testing (here) of | |
| 1206 // these bits, and their updating (here and elsewhere) under a | |
| 1207 // common lock. | |
| 1783 | 1208 task = create_compile_task(queue, |
| 0 | 1209 compile_id, method, |
| 1210 osr_bci, comp_level, | |
| 1211 hot_method, hot_count, comment, | |
| 1212 blocking); | |
| 1213 } | |
| 1214 | |
| 1215 if (blocking) { | |
| 1216 wait_for_completion(task); | |
| 1217 } | |
| 1218 } | |
| 1219 | |
| 1220 | |
| 1221 nmethod* CompileBroker::compile_method(methodHandle method, int osr_bci, | |
| 1783 | 1222 int comp_level, |
| 0 | 1223 methodHandle hot_method, int hot_count, |
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1224 const char* comment, Thread* THREAD) { |
| 0 | 1225 // make sure arguments make sense |
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1226 assert(method->method_holder()->oop_is_instance(), "not an instance method"); |
| 0 | 1227 assert(osr_bci == InvocationEntryBci || (0 <= osr_bci && osr_bci < method->code_size()), "bci out of range"); |
| 1228 assert(!method->is_abstract() && (osr_bci == InvocationEntryBci || !method->is_native()), "cannot compile abstract/native methods"); | |
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1229 assert(!method->method_holder()->is_not_initialized(), "method holder must be initialized"); |
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1230 // allow any levels for WhiteBox |
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1231 assert(WhiteBoxAPI || TieredCompilation || comp_level == CompLevel_highest_tier, "only CompLevel_highest_tier must be used in non-tiered"); |
| 0 | 1232 // return quickly if possible |
| 1233 | |
| 1234 // lock, make sure that the compilation | |
| 1235 // isn't prohibited in a straightforward way. | |
|
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1236 AbstractCompiler *comp = CompileBroker::compiler(comp_level); |
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1237 if (comp == NULL || !comp->can_compile_method(method) || |
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1238 compilation_is_prohibited(method, osr_bci, comp_level)) { |
| 0 | 1239 return NULL; |
| 1240 } | |
| 1241 | |
| 1242 if (osr_bci == InvocationEntryBci) { | |
| 1243 // standard compilation | |
| 1244 nmethod* method_code = method->code(); | |
| 1783 | 1245 if (method_code != NULL) { |
| 1246 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
| 1247 return method_code; | |
| 1248 } | |
| 0 | 1249 } |
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1250 if (method->is_not_compilable(comp_level)) { |
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1251 return NULL; |
| 1202 | 1252 } |
| 0 | 1253 } else { |
| 1254 // osr compilation | |
| 1255 #ifndef TIERED | |
| 1256 // seems like an assert of dubious value | |
| 1783 | 1257 assert(comp_level == CompLevel_highest_tier, |
| 0 | 1258 "all OSR compiles are assumed to be at a single compilation lavel"); |
| 1259 #endif // TIERED | |
| 1783 | 1260 // We accept a higher level osr method |
| 1261 nmethod* nm = method->lookup_osr_nmethod_for(osr_bci, comp_level, false); | |
| 0 | 1262 if (nm != NULL) return nm; |
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1263 if (method->is_not_osr_compilable(comp_level)) return NULL; |
| 0 | 1264 } |
| 1265 | |
| 1266 assert(!HAS_PENDING_EXCEPTION, "No exception should be present"); | |
| 1267 // some prerequisites that are compiler specific | |
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1268 if (comp->is_c2() || comp->is_shark()) { |
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1269 method->constants()->resolve_string_constants(CHECK_AND_CLEAR_NULL); |
| 0 | 1270 // Resolve all classes seen in the signature of the method |
| 1271 // we are compiling. | |
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1272 Method::load_signature_classes(method, CHECK_AND_CLEAR_NULL); |
| 0 | 1273 } |
| 1274 | |
| 1275 // If the method is native, do the lookup in the thread requesting | |
| 1276 // the compilation. Native lookups can load code, which is not | |
| 1277 // permitted during compilation. | |
| 1278 // | |
| 1279 // Note: A native method implies non-osr compilation which is | |
| 1280 // checked with an assertion at the entry of this method. | |
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1281 if (method->is_native() && !method->is_method_handle_intrinsic()) { |
| 0 | 1282 bool in_base_library; |
| 1283 address adr = NativeLookup::lookup(method, in_base_library, THREAD); | |
| 1284 if (HAS_PENDING_EXCEPTION) { | |
| 1285 // In case of an exception looking up the method, we just forget | |
| 1286 // about it. The interpreter will kick-in and throw the exception. | |
| 1287 method->set_not_compilable(); // implies is_not_osr_compilable() | |
| 1288 CLEAR_PENDING_EXCEPTION; | |
| 1289 return NULL; | |
| 1290 } | |
| 1291 assert(method->has_native_function(), "must have native code by now"); | |
| 1292 } | |
| 1293 | |
| 1294 // RedefineClasses() has replaced this method; just return | |
| 1295 if (method->is_old()) { | |
| 1296 return NULL; | |
| 1297 } | |
| 1298 | |
| 1299 // JVMTI -- post_compile_event requires jmethod_id() that may require | |
| 1300 // a lock the compiling thread can not acquire. Prefetch it here. | |
| 1301 if (JvmtiExport::should_post_compiled_method_load()) { | |
| 1302 method->jmethod_id(); | |
| 1303 } | |
| 1304 | |
| 1305 // do the compilation | |
| 1306 if (method->is_native()) { | |
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1307 if (!PreferInterpreterNativeStubs || method->is_method_handle_intrinsic()) { |
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1308 // Acquire our lock. |
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1309 int compile_id; |
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1310 { |
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1311 MutexLocker locker(MethodCompileQueue_lock, THREAD); |
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1312 compile_id = assign_compile_id(method, standard_entry_bci); |
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1313 } |
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1314 // To properly handle the appendix argument for out-of-line calls we are using a small trampoline that |
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1315 // pops off the appendix argument and jumps to the target (see gen_special_dispatch in SharedRuntime). |
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1316 // |
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1317 // Since normal compiled-to-compiled calls are not able to handle such a thing we MUST generate an adapter |
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1318 // in this case. If we can't generate one and use it we can not execute the out-of-line method handle calls. |
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1319 (void) AdapterHandlerLibrary::create_native_wrapper(method, compile_id); |
| 0 | 1320 } else { |
| 1321 return NULL; | |
| 1322 } | |
| 1323 } else { | |
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1324 // If the compiler is shut off due to code cache getting full |
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1325 // fail out now so blocking compiles dont hang the java thread |
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1326 if (!should_compile_new_jobs()) { |
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1327 CompilationPolicy::policy()->delay_compilation(method()); |
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1328 return NULL; |
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1329 } |
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1330 compile_method_base(method, osr_bci, comp_level, hot_method, hot_count, comment, THREAD); |
| 0 | 1331 } |
| 1332 | |
| 1333 // return requested nmethod | |
| 1783 | 1334 // We accept a higher level osr method |
| 1335 return osr_bci == InvocationEntryBci ? method->code() : method->lookup_osr_nmethod_for(osr_bci, comp_level, false); | |
| 0 | 1336 } |
| 1337 | |
| 1338 | |
| 1339 // ------------------------------------------------------------------ | |
| 1340 // CompileBroker::compilation_is_complete | |
| 1341 // | |
| 1342 // See if compilation of this method is already complete. | |
| 1343 bool CompileBroker::compilation_is_complete(methodHandle method, | |
| 1344 int osr_bci, | |
| 1345 int comp_level) { | |
| 1346 bool is_osr = (osr_bci != standard_entry_bci); | |
| 1347 if (is_osr) { | |
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1348 if (method->is_not_osr_compilable(comp_level)) { |
| 0 | 1349 return true; |
| 1350 } else { | |
| 1783 | 1351 nmethod* result = method->lookup_osr_nmethod_for(osr_bci, comp_level, true); |
| 0 | 1352 return (result != NULL); |
| 1353 } | |
| 1354 } else { | |
| 1355 if (method->is_not_compilable(comp_level)) { | |
| 1356 return true; | |
| 1357 } else { | |
| 1358 nmethod* result = method->code(); | |
| 1359 if (result == NULL) return false; | |
| 1783 | 1360 return comp_level == result->comp_level(); |
| 0 | 1361 } |
| 1362 } | |
| 1363 } | |
| 1364 | |
| 1365 | |
| 1366 // ------------------------------------------------------------------ | |
| 1367 // CompileBroker::compilation_is_in_queue | |
| 1368 // | |
| 1369 // See if this compilation is already requested. | |
| 1370 // | |
| 1371 // Implementation note: there is only a single "is in queue" bit | |
| 1372 // for each method. This means that the check below is overly | |
| 1373 // conservative in the sense that an osr compilation in the queue | |
| 1374 // will block a normal compilation from entering the queue (and vice | |
| 1375 // versa). This can be remedied by a full queue search to disambiguate | |
| 1376 // cases. If it is deemed profitible, this may be done. | |
| 1377 bool CompileBroker::compilation_is_in_queue(methodHandle method, | |
| 1783 | 1378 int osr_bci) { |
| 0 | 1379 return method->queued_for_compilation(); |
| 1380 } | |
| 1381 | |
| 1382 // ------------------------------------------------------------------ | |
| 1383 // CompileBroker::compilation_is_prohibited | |
| 1384 // | |
| 1385 // See if this compilation is not allowed. | |
| 1386 bool CompileBroker::compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level) { | |
| 1387 bool is_native = method->is_native(); | |
| 1388 // Some compilers may not support the compilation of natives. | |
|
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1389 AbstractCompiler *comp = compiler(comp_level); |
| 0 | 1390 if (is_native && |
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1391 (!CICompileNatives || comp == NULL || !comp->supports_native())) { |
| 1783 | 1392 method->set_not_compilable_quietly(comp_level); |
| 0 | 1393 return true; |
| 1394 } | |
| 1395 | |
| 1396 bool is_osr = (osr_bci != standard_entry_bci); | |
| 1397 // Some compilers may not support on stack replacement. | |
| 1398 if (is_osr && | |
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1399 (!CICompileOSR || comp == NULL || !comp->supports_osr())) { |
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1400 method->set_not_osr_compilable(comp_level); |
| 0 | 1401 return true; |
| 1402 } | |
| 1403 | |
| 1404 // The method may be explicitly excluded by the user. | |
| 1405 bool quietly; | |
| 1406 if (CompilerOracle::should_exclude(method, quietly)) { | |
| 1407 if (!quietly) { | |
| 1408 // This does not happen quietly... | |
| 1409 ResourceMark rm; | |
| 1410 tty->print("### Excluding %s:%s", | |
| 1411 method->is_native() ? "generation of native wrapper" : "compile", | |
| 1412 (method->is_static() ? " static" : "")); | |
| 1413 method->print_short_name(tty); | |
| 1414 tty->cr(); | |
| 1415 } | |
| 7998 | 1416 method->set_not_compilable(CompLevel_all, !quietly, "excluded by CompilerOracle"); |
| 0 | 1417 } |
| 1418 | |
| 1419 return false; | |
| 1420 } | |
| 1421 | |
| 1422 | |
| 1423 // ------------------------------------------------------------------ | |
| 1424 // CompileBroker::assign_compile_id | |
| 1425 // | |
| 1426 // Assign a serialized id number to this compilation request. If the | |
| 1427 // number falls out of the allowed range, return a 0. OSR | |
| 1428 // compilations may be numbered separately from regular compilations | |
| 1429 // if certain debugging flags are used. | |
| 1430 uint CompileBroker::assign_compile_id(methodHandle method, int osr_bci) { | |
| 1783 | 1431 assert(MethodCompileQueue_lock->owner() == Thread::current(), |
| 0 | 1432 "must hold the compilation queue lock"); |
| 1433 bool is_osr = (osr_bci != standard_entry_bci); | |
| 1434 uint id; | |
| 1435 if (CICountOSR && is_osr) { | |
| 1436 id = ++_osr_compilation_id; | |
| 1437 if ((uint)CIStartOSR <= id && id < (uint)CIStopOSR) { | |
| 1438 return id; | |
| 1439 } | |
| 1440 } else { | |
| 1441 id = ++_compilation_id; | |
| 1442 if ((uint)CIStart <= id && id < (uint)CIStop) { | |
| 1443 return id; | |
| 1444 } | |
| 1445 } | |
| 1446 | |
| 1447 // Method was not in the appropriate compilation range. | |
|
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1448 method->set_not_compilable_quietly(); |
| 0 | 1449 return 0; |
| 1450 } | |
| 1451 | |
| 1452 | |
| 1453 // ------------------------------------------------------------------ | |
| 1454 // CompileBroker::is_compile_blocking | |
| 1455 // | |
| 1456 // Should the current thread be blocked until this compilation request | |
| 1457 // has been fulfilled? | |
| 1458 bool CompileBroker::is_compile_blocking(methodHandle method, int osr_bci) { | |
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1459 assert(!InstanceRefKlass::owns_pending_list_lock(JavaThread::current()), "possible deadlock"); |
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1460 return !BackgroundCompilation; |
| 0 | 1461 } |
| 1462 | |
| 1463 | |
| 1464 // ------------------------------------------------------------------ | |
| 1465 // CompileBroker::preload_classes | |
| 1466 void CompileBroker::preload_classes(methodHandle method, TRAPS) { | |
| 1467 // Move this code over from c1_Compiler.cpp | |
| 1468 ShouldNotReachHere(); | |
| 1469 } | |
| 1470 | |
| 1471 | |
| 1472 // ------------------------------------------------------------------ | |
| 1473 // CompileBroker::create_compile_task | |
| 1474 // | |
| 1475 // Create a CompileTask object representing the current request for | |
| 1476 // compilation. Add this task to the queue. | |
| 1477 CompileTask* CompileBroker::create_compile_task(CompileQueue* queue, | |
| 1478 int compile_id, | |
| 1479 methodHandle method, | |
| 1480 int osr_bci, | |
| 1481 int comp_level, | |
| 1482 methodHandle hot_method, | |
| 1483 int hot_count, | |
| 1484 const char* comment, | |
| 1485 bool blocking) { | |
| 1486 CompileTask* new_task = allocate_task(); | |
| 1487 new_task->initialize(compile_id, method, osr_bci, comp_level, | |
| 1488 hot_method, hot_count, comment, | |
| 1489 blocking); | |
| 1490 queue->add(new_task); | |
| 1491 return new_task; | |
| 1492 } | |
| 1493 | |
| 1494 | |
| 1495 // ------------------------------------------------------------------ | |
| 1496 // CompileBroker::allocate_task | |
| 1497 // | |
| 1498 // Allocate a CompileTask, from the free list if possible. | |
| 1499 CompileTask* CompileBroker::allocate_task() { | |
| 1500 MutexLocker locker(CompileTaskAlloc_lock); | |
| 1501 CompileTask* task = NULL; | |
| 1502 if (_task_free_list != NULL) { | |
| 1503 task = _task_free_list; | |
| 1504 _task_free_list = task->next(); | |
| 1505 task->set_next(NULL); | |
| 1506 } else { | |
| 1507 task = new CompileTask(); | |
| 1508 task->set_next(NULL); | |
| 1509 } | |
| 1510 return task; | |
| 1511 } | |
| 1512 | |
| 1513 | |
| 1514 // ------------------------------------------------------------------ | |
| 1515 // CompileBroker::free_task | |
| 1516 // | |
| 1517 // Add a task to the free list. | |
| 1518 void CompileBroker::free_task(CompileTask* task) { | |
| 1519 MutexLocker locker(CompileTaskAlloc_lock); | |
| 1520 task->free(); | |
| 1521 task->set_next(_task_free_list); | |
| 1522 _task_free_list = task; | |
| 1523 } | |
| 1524 | |
| 1525 | |
| 1526 // ------------------------------------------------------------------ | |
| 1527 // CompileBroker::wait_for_completion | |
| 1528 // | |
| 1529 // Wait for the given method CompileTask to complete. | |
| 1530 void CompileBroker::wait_for_completion(CompileTask* task) { | |
| 1531 if (CIPrintCompileQueue) { | |
| 1532 tty->print_cr("BLOCKING FOR COMPILE"); | |
| 1533 } | |
| 1534 | |
| 1535 assert(task->is_blocking(), "can only wait on blocking task"); | |
| 1536 | |
| 1537 JavaThread *thread = JavaThread::current(); | |
| 1538 thread->set_blocked_on_compilation(true); | |
| 1539 | |
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1540 methodHandle method(thread, task->method()); |
| 0 | 1541 { |
| 1542 MutexLocker waiter(task->lock(), thread); | |
| 1543 | |
| 1544 while (!task->is_complete()) | |
| 1545 task->lock()->wait(); | |
| 1546 } | |
| 1547 // It is harmless to check this status without the lock, because | |
| 1548 // completion is a stable property (until the task object is recycled). | |
| 1549 assert(task->is_complete(), "Compilation should have completed"); | |
| 1550 assert(task->code_handle() == NULL, "must be reset"); | |
| 1551 | |
| 1552 thread->set_blocked_on_compilation(false); | |
| 1553 | |
| 1554 // By convention, the waiter is responsible for recycling a | |
| 1555 // blocking CompileTask. Since there is only one waiter ever | |
| 1556 // waiting on a CompileTask, we know that no one else will | |
| 1557 // be using this CompileTask; we can free it. | |
| 1558 free_task(task); | |
| 1559 } | |
| 1560 | |
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1561 // Initialize compiler thread(s) + compiler object(s). The postcondition |
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1562 // of this function is that the compiler runtimes are initialized and that |
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1563 //compiler threads can start compiling. |
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1564 bool CompileBroker::init_compiler_runtime() { |
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1565 CompilerThread* thread = CompilerThread::current(); |
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1566 AbstractCompiler* comp = thread->compiler(); |
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1567 // Final sanity check - the compiler object must exist |
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1568 guarantee(comp != NULL, "Compiler object must exist"); |
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1569 |
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1570 int system_dictionary_modification_counter; |
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1571 { |
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1572 MutexLocker locker(Compile_lock, thread); |
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1573 system_dictionary_modification_counter = SystemDictionary::number_of_modifications(); |
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1574 } |
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1575 |
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1576 { |
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1577 // Must switch to native to allocate ci_env |
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1578 ThreadToNativeFromVM ttn(thread); |
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1579 ciEnv ci_env(NULL, system_dictionary_modification_counter); |
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1580 // Cache Jvmti state |
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1581 ci_env.cache_jvmti_state(); |
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1582 // Cache DTrace flags |
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1583 ci_env.cache_dtrace_flags(); |
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1584 |
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1585 // Switch back to VM state to do compiler initialization |
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1586 ThreadInVMfromNative tv(thread); |
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1587 ResetNoHandleMark rnhm; |
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1588 |
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1589 |
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1590 if (!comp->is_shark()) { |
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1591 // Perform per-thread and global initializations |
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1592 comp->initialize(); |
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1593 } |
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1594 } |
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1595 |
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1596 if (comp->is_failed()) { |
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1597 disable_compilation_forever(); |
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1598 // If compiler initialization failed, no compiler thread that is specific to a |
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1599 // particular compiler runtime will ever start to compile methods. |
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1600 |
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1601 shutdown_compiler_runtime(comp, thread); |
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1602 return false; |
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1603 } |
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1604 |
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1605 // C1 specific check |
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1606 if (comp->is_c1() && (thread->get_buffer_blob() == NULL)) { |
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1607 warning("Initialization of %s thread failed (no space to run compilers)", thread->name()); |
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1608 return false; |
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1609 } |
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1610 |
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1611 return true; |
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1612 } |
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1613 |
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1614 // If C1 and/or C2 initialization failed, we shut down all compilation. |
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1615 // We do this to keep things simple. This can be changed if it ever turns out to be |
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1616 // a problem. |
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1617 void CompileBroker::shutdown_compiler_runtime(AbstractCompiler* comp, CompilerThread* thread) { |
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1618 // Free buffer blob, if allocated |
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1619 if (thread->get_buffer_blob() != NULL) { |
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1620 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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1621 CodeCache::free(thread->get_buffer_blob()); |
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1622 } |
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1623 |
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1624 if (comp->should_perform_shutdown()) { |
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1625 // There are two reasons for shutting down the compiler |
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1626 // 1) compiler runtime initialization failed |
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1627 // 2) The code cache is full and the following flag is set: -XX:-UseCodeCacheFlushing |
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1628 warning("Shutting down compiler %s (no space to run compilers)", comp->name()); |
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1629 |
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1630 // Only one thread per compiler runtime object enters here |
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1631 // Set state to shut down |
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1632 comp->set_shut_down(); |
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1633 |
|
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1634 MutexLocker mu(MethodCompileQueue_lock, thread); |
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1635 CompileQueue* queue; |
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1636 if (_c1_method_queue != NULL) { |
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1637 _c1_method_queue->delete_all(); |
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1638 queue = _c1_method_queue; |
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1639 _c1_method_queue = NULL; |
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1640 delete _c1_method_queue; |
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1641 } |
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1642 |
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1643 if (_c2_method_queue != NULL) { |
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1644 _c2_method_queue->delete_all(); |
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1645 queue = _c2_method_queue; |
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1646 _c2_method_queue = NULL; |
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1647 delete _c2_method_queue; |
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1648 } |
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1649 |
|
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1650 // We could delete compiler runtimes also. However, there are references to |
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1651 // the compiler runtime(s) (e.g., nmethod::is_compiled_by_c1()) which then |
|
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1652 // fail. This can be done later if necessary. |
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1653 } |
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1654 } |
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|
1655 |
| 0 | 1656 // ------------------------------------------------------------------ |
| 1657 // CompileBroker::compiler_thread_loop | |
| 1658 // | |
| 1659 // The main loop run by a CompilerThread. | |
| 1660 void CompileBroker::compiler_thread_loop() { | |
| 1661 CompilerThread* thread = CompilerThread::current(); | |
| 1662 CompileQueue* queue = thread->queue(); | |
| 1663 // For the thread that initializes the ciObjectFactory | |
| 1664 // this resource mark holds all the shared objects | |
| 1665 ResourceMark rm; | |
| 1666 | |
| 1667 // First thread to get here will initialize the compiler interface | |
| 1668 | |
| 1669 if (!ciObjectFactory::is_initialized()) { | |
| 1670 ASSERT_IN_VM; | |
| 1671 MutexLocker only_one (CompileThread_lock, thread); | |
| 1672 if (!ciObjectFactory::is_initialized()) { | |
| 1673 ciObjectFactory::initialize(); | |
| 1674 } | |
| 1675 } | |
| 1676 | |
| 1677 // Open a log. | |
| 1678 if (LogCompilation) { | |
| 1679 init_compiler_thread_log(); | |
| 1680 } | |
| 1681 CompileLog* log = thread->log(); | |
| 1682 if (log != NULL) { | |
| 6843 | 1683 log->begin_elem("start_compile_thread name='%s' thread='" UINTX_FORMAT "' process='%d'", |
| 1684 thread->name(), | |
| 0 | 1685 os::current_thread_id(), |
| 1686 os::current_process_id()); | |
| 1687 log->stamp(); | |
| 1688 log->end_elem(); | |
| 1689 } | |
| 1690 | |
|
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1691 // If compiler thread/runtime initialization fails, exit the compiler thread |
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1692 if (!init_compiler_runtime()) { |
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1693 return; |
|
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1694 } |
| 1202 | 1695 |
|
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1696 // Poll for new compilation tasks as long as the JVM runs. Compilation |
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1697 // should only be disabled if something went wrong while initializing the |
|
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1698 // compiler runtimes. This, in turn, should not happen. The only known case |
|
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1699 // when compiler runtime initialization fails is if there is not enough free |
|
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1700 // space in the code cache to generate the necessary stubs, etc. |
|
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1701 while (!is_compilation_disabled_forever()) { |
|
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1702 // We need this HandleMark to avoid leaking VM handles. |
|
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1703 HandleMark hm(thread); |
| 0 | 1704 |
|
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1705 if (CodeCache::unallocated_capacity() < CodeCacheMinimumFreeSpace) { |
|
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1706 // the code cache is really full |
|
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1707 handle_full_code_cache(); |
|
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1708 } |
| 0 | 1709 |
|
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1710 CompileTask* task = queue->get(); |
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1711 if (task == NULL) { |
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1712 continue; |
|
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1713 } |
| 0 | 1714 |
|
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|
1715 // Give compiler threads an extra quanta. They tend to be bursty and |
|
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1716 // this helps the compiler to finish up the job. |
|
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1717 if( CompilerThreadHintNoPreempt ) |
|
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|
1718 os::hint_no_preempt(); |
| 0 | 1719 |
|
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1720 // trace per thread time and compile statistics |
|
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1721 CompilerCounters* counters = ((CompilerThread*)thread)->counters(); |
|
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|
1722 PerfTraceTimedEvent(counters->time_counter(), counters->compile_counter()); |
| 0 | 1723 |
|
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1724 // Assign the task to the current thread. Mark this compilation |
|
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1725 // thread as active for the profiler. |
|
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|
1726 CompileTaskWrapper ctw(task); |
|
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|
1727 nmethodLocker result_handle; // (handle for the nmethod produced by this task) |
|
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|
1728 task->set_code_handle(&result_handle); |
|
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|
1729 methodHandle method(thread, task->method()); |
|
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|
1730 |
|
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|
1731 // Never compile a method if breakpoints are present in it |
|
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|
1732 if (method()->number_of_breakpoints() == 0) { |
|
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|
1733 // Compile the method. |
|
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|
1734 if ((UseCompiler || AlwaysCompileLoopMethods) && CompileBroker::should_compile_new_jobs()) { |
| 0 | 1735 #ifdef COMPILER1 |
|
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|
1736 // Allow repeating compilations for the purpose of benchmarking |
|
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|
1737 // compile speed. This is not useful for customers. |
|
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|
1738 if (CompilationRepeat != 0) { |
|
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|
1739 int compile_count = CompilationRepeat; |
|
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|
1740 while (compile_count > 0) { |
|
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|
1741 invoke_compiler_on_method(task); |
|
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|
1742 nmethod* nm = method->code(); |
|
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|
1743 if (nm != NULL) { |
|
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|
1744 nm->make_zombie(); |
|
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|
1745 method->clear_code(); |
| 0 | 1746 } |
|
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|
1747 compile_count--; |
| 0 | 1748 } |
|
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|
1749 } |
| 0 | 1750 #endif /* COMPILER1 */ |
|
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|
1751 invoke_compiler_on_method(task); |
|
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|
1752 } else { |
|
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|
1753 // After compilation is disabled, remove remaining methods from queue |
|
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|
1754 method->clear_queued_for_compilation(); |
| 0 | 1755 } |
| 1756 } | |
| 1757 } | |
|
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|
1758 |
|
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|
1759 // Shut down compiler runtime |
|
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|
1760 shutdown_compiler_runtime(thread->compiler(), thread); |
| 0 | 1761 } |
| 1762 | |
| 1763 // ------------------------------------------------------------------ | |
| 1764 // CompileBroker::init_compiler_thread_log | |
| 1765 // | |
| 1766 // Set up state required by +LogCompilation. | |
| 1767 void CompileBroker::init_compiler_thread_log() { | |
| 1768 CompilerThread* thread = CompilerThread::current(); | |
|
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|
1769 char file_name[4*K]; |
| 0 | 1770 FILE* fp = NULL; |
| 1771 intx thread_id = os::current_thread_id(); | |
| 1772 for (int try_temp_dir = 1; try_temp_dir >= 0; try_temp_dir--) { | |
| 1773 const char* dir = (try_temp_dir ? os::get_temp_directory() : NULL); | |
|
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|
1774 if (dir == NULL) { |
|
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|
1775 jio_snprintf(file_name, sizeof(file_name), "hs_c" UINTX_FORMAT "_pid%u.log", |
|
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|
1776 thread_id, os::current_process_id()); |
|
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|
1777 } else { |
|
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|
1778 jio_snprintf(file_name, sizeof(file_name), |
|
1353
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|
1779 "%s%shs_c" UINTX_FORMAT "_pid%u.log", dir, |
|
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|
1780 os::file_separator(), thread_id, os::current_process_id()); |
|
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|
1781 } |
|
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|
1782 |
|
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|
1783 fp = fopen(file_name, "at"); |
| 0 | 1784 if (fp != NULL) { |
|
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|
1785 if (LogCompilation && Verbose) { |
|
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|
1786 tty->print_cr("Opening compilation log %s", file_name); |
|
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|
1787 } |
|
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|
1788 CompileLog* log = new(ResourceObj::C_HEAP, mtCompiler) CompileLog(file_name, fp, thread_id); |
|
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1789 thread->init_log(log); |
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1790 |
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1791 if (xtty != NULL) { |
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1792 ttyLocker ttyl; |
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1793 // Record any per thread log files |
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1794 xtty->elem("thread_logfile thread='%d' filename='%s'", thread_id, file_name); |
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1795 } |
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1796 return; |
| 0 | 1797 } |
| 1798 } | |
|
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1799 warning("Cannot open log file: %s", file_name); |
| 0 | 1800 } |
| 1801 | |
| 1802 // ------------------------------------------------------------------ | |
| 1803 // CompileBroker::set_should_block | |
| 1804 // | |
| 1805 // Set _should_block. | |
| 1806 // Call this from the VM, with Threads_lock held and a safepoint requested. | |
| 1807 void CompileBroker::set_should_block() { | |
| 1808 assert(Threads_lock->owner() == Thread::current(), "must have threads lock"); | |
| 1809 assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint already"); | |
| 1810 #ifndef PRODUCT | |
| 1811 if (PrintCompilation && (Verbose || WizardMode)) | |
| 1812 tty->print_cr("notifying compiler thread pool to block"); | |
| 1813 #endif | |
| 1814 _should_block = true; | |
| 1815 } | |
| 1816 | |
| 1817 // ------------------------------------------------------------------ | |
| 1818 // CompileBroker::maybe_block | |
| 1819 // | |
| 1820 // Call this from the compiler at convenient points, to poll for _should_block. | |
| 1821 void CompileBroker::maybe_block() { | |
| 1822 if (_should_block) { | |
| 1823 #ifndef PRODUCT | |
| 1824 if (PrintCompilation && (Verbose || WizardMode)) | |
| 1825 tty->print_cr("compiler thread " INTPTR_FORMAT " poll detects block request", Thread::current()); | |
| 1826 #endif | |
| 1827 ThreadInVMfromNative tivfn(JavaThread::current()); | |
| 1828 } | |
| 1829 } | |
| 1830 | |
|
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1831 // wrapper for CodeCache::print_summary() |
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1832 static void codecache_print(bool detailed) |
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1833 { |
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1834 ResourceMark rm; |
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1835 stringStream s; |
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1836 // Dump code cache into a buffer before locking the tty, |
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1837 { |
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1838 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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1839 CodeCache::print_summary(&s, detailed); |
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1840 } |
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1841 ttyLocker ttyl; |
|
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1842 tty->print(s.as_string()); |
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1843 } |
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1844 |
| 0 | 1845 // ------------------------------------------------------------------ |
| 1846 // CompileBroker::invoke_compiler_on_method | |
| 1847 // | |
| 1848 // Compile a method. | |
| 1849 // | |
| 1850 void CompileBroker::invoke_compiler_on_method(CompileTask* task) { | |
| 1851 if (PrintCompilation) { | |
| 1852 ResourceMark rm; | |
| 1853 task->print_line(); | |
| 1854 } | |
| 1855 elapsedTimer time; | |
| 1856 | |
| 1857 CompilerThread* thread = CompilerThread::current(); | |
| 1858 ResourceMark rm(thread); | |
| 1859 | |
|
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1860 if (LogEvents) { |
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1861 _compilation_log->log_compile(thread, task); |
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1862 } |
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1863 |
| 0 | 1864 // Common flags. |
| 1865 uint compile_id = task->compile_id(); | |
| 1866 int osr_bci = task->osr_bci(); | |
| 1867 bool is_osr = (osr_bci != standard_entry_bci); | |
| 1868 bool should_log = (thread->log() != NULL); | |
| 1869 bool should_break = false; | |
|
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1870 int task_level = task->comp_level(); |
| 0 | 1871 { |
| 1872 // create the handle inside it's own block so it can't | |
| 1873 // accidentally be referenced once the thread transitions to | |
| 1874 // native. The NoHandleMark before the transition should catch | |
| 1875 // any cases where this occurs in the future. | |
|
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1876 methodHandle method(thread, task->method()); |
| 0 | 1877 should_break = check_break_at(method, compile_id, is_osr); |
| 1878 if (should_log && !CompilerOracle::should_log(method)) { | |
| 1879 should_log = false; | |
| 1880 } | |
| 1881 assert(!method->is_native(), "no longer compile natives"); | |
| 1882 | |
| 1883 // Save information about this method in case of failure. | |
|
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1884 set_last_compile(thread, method, is_osr, task_level); |
| 0 | 1885 |
|
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1886 DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, compiler_name(task_level)); |
| 0 | 1887 } |
| 1888 | |
| 1889 // Allocate a new set of JNI handles. | |
| 1890 push_jni_handle_block(); | |
|
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1891 Method* target_handle = task->method(); |
| 0 | 1892 int compilable = ciEnv::MethodCompilable; |
| 1893 { | |
| 1894 int system_dictionary_modification_counter; | |
| 1895 { | |
| 1896 MutexLocker locker(Compile_lock, thread); | |
| 1897 system_dictionary_modification_counter = SystemDictionary::number_of_modifications(); | |
| 1898 } | |
| 1899 | |
| 1900 NoHandleMark nhm; | |
| 1901 ThreadToNativeFromVM ttn(thread); | |
| 1902 | |
| 1903 ciEnv ci_env(task, system_dictionary_modification_counter); | |
| 1904 if (should_break) { | |
| 1905 ci_env.set_break_at_compile(true); | |
| 1906 } | |
| 1907 if (should_log) { | |
| 1908 ci_env.set_log(thread->log()); | |
| 1909 } | |
| 1910 assert(thread->env() == &ci_env, "set by ci_env"); | |
| 1911 // The thread-env() field is cleared in ~CompileTaskWrapper. | |
| 1912 | |
|
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1913 // Cache Jvmti state |
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1914 ci_env.cache_jvmti_state(); |
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1915 |
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1916 // Cache DTrace flags |
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1917 ci_env.cache_dtrace_flags(); |
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1918 |
| 0 | 1919 ciMethod* target = ci_env.get_method_from_handle(target_handle); |
| 1920 | |
| 1921 TraceTime t1("compilation", &time); | |
| 10405 | 1922 EventCompilation event; |
| 0 | 1923 |
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1924 AbstractCompiler *comp = compiler(task_level); |
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1925 if (comp == NULL) { |
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1926 ci_env.record_method_not_compilable("no compiler", !TieredCompilation); |
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1927 } else { |
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1928 comp->compile_method(&ci_env, target, osr_bci); |
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1929 } |
| 0 | 1930 |
| 1931 if (!ci_env.failing() && task->code() == NULL) { | |
| 1932 //assert(false, "compiler should always document failure"); | |
| 1933 // The compiler elected, without comment, not to register a result. | |
| 1934 // Do not attempt further compilations of this method. | |
|
1964
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1935 ci_env.record_method_not_compilable("compile failed", !TieredCompilation); |
| 0 | 1936 } |
| 1937 | |
|
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1938 // Copy this bit to the enclosing block: |
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1939 compilable = ci_env.compilable(); |
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1940 |
| 0 | 1941 if (ci_env.failing()) { |
|
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1942 const char* retry_message = ci_env.retry_message(); |
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1943 if (_compilation_log != NULL) { |
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1944 _compilation_log->log_failure(thread, task, ci_env.failure_reason(), retry_message); |
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1945 } |
| 0 | 1946 if (PrintCompilation) { |
|
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1947 FormatBufferResource msg = retry_message != NULL ? |
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1948 err_msg_res("COMPILE SKIPPED: %s (%s)", ci_env.failure_reason(), retry_message) : |
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1949 err_msg_res("COMPILE SKIPPED: %s", ci_env.failure_reason()); |
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1950 task->print_compilation(tty, msg); |
| 0 | 1951 } |
| 1952 } else { | |
| 1953 task->mark_success(); | |
| 1954 task->set_num_inlined_bytecodes(ci_env.num_inlined_bytecodes()); | |
|
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1955 if (_compilation_log != NULL) { |
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1956 nmethod* code = task->code(); |
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1957 if (code != NULL) { |
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1958 _compilation_log->log_nmethod(thread, code); |
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1959 } |
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1960 } |
| 0 | 1961 } |
|
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1962 // simulate crash during compilation |
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1963 assert(task->compile_id() != CICrashAt, "just as planned"); |
| 10405 | 1964 if (event.should_commit()) { |
| 1965 event.set_method(target->get_Method()); | |
| 1966 event.set_compileID(compile_id); | |
| 1967 event.set_compileLevel(task->comp_level()); | |
| 1968 event.set_succeded(task->is_success()); | |
| 1969 event.set_isOsr(is_osr); | |
| 1970 event.set_codeSize((task->code() == NULL) ? 0 : task->code()->total_size()); | |
| 1971 event.set_inlinedBytes(task->num_inlined_bytecodes()); | |
| 1972 event.commit(); | |
| 1973 } | |
| 0 | 1974 } |
| 1975 pop_jni_handle_block(); | |
| 1976 | |
|
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1977 methodHandle method(thread, task->method()); |
| 0 | 1978 |
|
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1979 DTRACE_METHOD_COMPILE_END_PROBE(method, compiler_name(task_level), task->is_success()); |
| 0 | 1980 |
| 1981 collect_statistics(thread, time, task); | |
| 1982 | |
|
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1983 if (PrintCompilation && PrintCompilation2) { |
| 4047 | 1984 tty->print("%7d ", (int) tty->time_stamp().milliseconds()); // print timestamp |
| 1985 tty->print("%4d ", compile_id); // print compilation number | |
| 1986 tty->print("%s ", (is_osr ? "%" : " ")); | |
| 10278 | 1987 if (task->code() != NULL) { |
| 1988 tty->print("size: %d(%d) ", task->code()->total_size(), task->code()->insts_size()); | |
| 1989 } | |
| 1990 tty->print_cr("time: %d inlined: %d bytes", (int)time.milliseconds(), task->num_inlined_bytecodes()); | |
| 4047 | 1991 } |
| 1992 | |
|
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1993 if (PrintCodeCacheOnCompilation) |
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1994 codecache_print(/* detailed= */ false); |
|
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1995 |
|
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1996 // Disable compilation, if required. |
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1997 switch (compilable) { |
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1998 case ciEnv::MethodCompilable_never: |
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1999 if (is_osr) |
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2000 method->set_not_osr_compilable_quietly(); |
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2001 else |
|
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2002 method->set_not_compilable_quietly(); |
|
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2003 break; |
|
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2004 case ciEnv::MethodCompilable_not_at_tier: |
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2005 if (is_osr) |
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2006 method->set_not_osr_compilable_quietly(task_level); |
|
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2007 else |
|
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2008 method->set_not_compilable_quietly(task_level); |
|
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2009 break; |
| 0 | 2010 } |
| 2011 | |
| 2012 // Note that the queued_for_compilation bits are cleared without | |
| 2013 // protection of a mutex. [They were set by the requester thread, | |
| 2014 // when adding the task to the complie queue -- at which time the | |
| 2015 // compile queue lock was held. Subsequently, we acquired the compile | |
| 2016 // queue lock to get this task off the compile queue; thus (to belabour | |
| 2017 // the point somewhat) our clearing of the bits must be occurring | |
| 2018 // only after the setting of the bits. See also 14012000 above. | |
| 2019 method->clear_queued_for_compilation(); | |
| 2020 | |
| 2021 #ifdef ASSERT | |
| 2022 if (CollectedHeap::fired_fake_oom()) { | |
| 2023 // The current compile received a fake OOM during compilation so | |
| 2024 // go ahead and exit the VM since the test apparently succeeded | |
| 2025 tty->print_cr("*** Shutting down VM after successful fake OOM"); | |
| 2026 vm_exit(0); | |
| 2027 } | |
| 2028 #endif | |
| 2029 } | |
| 2030 | |
|
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2031 /** |
|
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2032 * The CodeCache is full. Print out warning and disable compilation |
|
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2033 * or try code cache cleaning so compilation can continue later. |
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2034 */ |
| 1202 | 2035 void CompileBroker::handle_full_code_cache() { |
| 2036 UseInterpreter = true; | |
| 2037 if (UseCompiler || AlwaysCompileLoopMethods ) { | |
|
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2038 if (xtty != NULL) { |
|
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2039 ResourceMark rm; |
|
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2040 stringStream s; |
|
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2041 // Dump code cache state into a buffer before locking the tty, |
|
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2042 // because log_state() will use locks causing lock conflicts. |
|
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2043 CodeCache::log_state(&s); |
|
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2044 // Lock to prevent tearing |
|
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2045 ttyLocker ttyl; |
|
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2046 xtty->begin_elem("code_cache_full"); |
|
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2047 xtty->print(s.as_string()); |
|
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2048 xtty->stamp(); |
|
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2049 xtty->end_elem(); |
| 1202 | 2050 } |
| 10405 | 2051 |
| 2052 CodeCache::report_codemem_full(); | |
| 2053 | |
|
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2054 #ifndef PRODUCT |
| 1202 | 2055 if (CompileTheWorld || ExitOnFullCodeCache) { |
|
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2056 codecache_print(/* detailed= */ true); |
| 1202 | 2057 before_exit(JavaThread::current()); |
| 2058 exit_globals(); // will delete tty | |
| 2059 vm_direct_exit(CompileTheWorld ? 0 : 1); | |
| 2060 } | |
|
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2061 #endif |
| 1202 | 2062 if (UseCodeCacheFlushing) { |
|
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2063 // Since code cache is full, immediately stop new compiles |
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2064 if (CompileBroker::set_should_compile_new_jobs(CompileBroker::stop_compilation)) { |
|
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2065 NMethodSweeper::log_sweep("disable_compiler"); |
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2066 } |
|
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2067 // Switch to 'vm_state'. This ensures that possibly_sweep() can be called |
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2068 // without having to consider the state in which the current thread is. |
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2069 ThreadInVMfromUnknown in_vm; |
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2070 NMethodSweeper::possibly_sweep(); |
| 1202 | 2071 } else { |
|
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2072 disable_compilation_forever(); |
| 1202 | 2073 } |
|
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2074 |
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2075 // Print warning only once |
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2076 if (should_print_compiler_warning()) { |
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2077 warning("CodeCache is full. Compiler has been disabled."); |
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2078 warning("Try increasing the code cache size using -XX:ReservedCodeCacheSize="); |
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2079 codecache_print(/* detailed= */ true); |
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|
2080 } |
| 1202 | 2081 } |
| 2082 } | |
| 2083 | |
| 2084 // ------------------------------------------------------------------ | |
| 0 | 2085 // CompileBroker::set_last_compile |
| 2086 // | |
| 2087 // Record this compilation for debugging purposes. | |
| 2088 void CompileBroker::set_last_compile(CompilerThread* thread, methodHandle method, bool is_osr, int comp_level) { | |
| 2089 ResourceMark rm; | |
| 2090 char* method_name = method->name()->as_C_string(); | |
| 2091 strncpy(_last_method_compiled, method_name, CompileBroker::name_buffer_length); | |
| 2092 char current_method[CompilerCounters::cmname_buffer_length]; | |
| 2093 size_t maxLen = CompilerCounters::cmname_buffer_length; | |
| 2094 | |
| 2095 if (UsePerfData) { | |
|
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2096 const char* class_name = method->method_holder()->name()->as_C_string(); |
| 0 | 2097 |
| 2098 size_t s1len = strlen(class_name); | |
| 2099 size_t s2len = strlen(method_name); | |
| 2100 | |
| 2101 // check if we need to truncate the string | |
| 2102 if (s1len + s2len + 2 > maxLen) { | |
| 2103 | |
| 2104 // the strategy is to lop off the leading characters of the | |
| 2105 // class name and the trailing characters of the method name. | |
| 2106 | |
| 2107 if (s2len + 2 > maxLen) { | |
| 2108 // lop of the entire class name string, let snprintf handle | |
| 2109 // truncation of the method name. | |
| 2110 class_name += s1len; // null string | |
| 2111 } | |
| 2112 else { | |
| 2113 // lop off the extra characters from the front of the class name | |
| 2114 class_name += ((s1len + s2len + 2) - maxLen); | |
| 2115 } | |
| 2116 } | |
| 2117 | |
| 2118 jio_snprintf(current_method, maxLen, "%s %s", class_name, method_name); | |
| 2119 } | |
| 2120 | |
| 2121 if (CICountOSR && is_osr) { | |
| 2122 _last_compile_type = osr_compile; | |
| 2123 } else { | |
| 2124 _last_compile_type = normal_compile; | |
| 2125 } | |
| 2126 _last_compile_level = comp_level; | |
| 2127 | |
| 2128 if (UsePerfData) { | |
| 2129 CompilerCounters* counters = thread->counters(); | |
| 2130 counters->set_current_method(current_method); | |
| 2131 counters->set_compile_type((jlong)_last_compile_type); | |
| 2132 } | |
| 2133 } | |
| 2134 | |
| 2135 | |
| 2136 // ------------------------------------------------------------------ | |
| 2137 // CompileBroker::push_jni_handle_block | |
| 2138 // | |
| 2139 // Push on a new block of JNI handles. | |
| 2140 void CompileBroker::push_jni_handle_block() { | |
| 2141 JavaThread* thread = JavaThread::current(); | |
| 2142 | |
| 2143 // Allocate a new block for JNI handles. | |
| 2144 // Inlined code from jni_PushLocalFrame() | |
| 2145 JNIHandleBlock* java_handles = thread->active_handles(); | |
| 2146 JNIHandleBlock* compile_handles = JNIHandleBlock::allocate_block(thread); | |
| 2147 assert(compile_handles != NULL && java_handles != NULL, "should not be NULL"); | |
| 2148 compile_handles->set_pop_frame_link(java_handles); // make sure java handles get gc'd. | |
| 2149 thread->set_active_handles(compile_handles); | |
| 2150 } | |
| 2151 | |
| 2152 | |
| 2153 // ------------------------------------------------------------------ | |
| 2154 // CompileBroker::pop_jni_handle_block | |
| 2155 // | |
| 2156 // Pop off the current block of JNI handles. | |
| 2157 void CompileBroker::pop_jni_handle_block() { | |
| 2158 JavaThread* thread = JavaThread::current(); | |
| 2159 | |
| 2160 // Release our JNI handle block | |
| 2161 JNIHandleBlock* compile_handles = thread->active_handles(); | |
| 2162 JNIHandleBlock* java_handles = compile_handles->pop_frame_link(); | |
| 2163 thread->set_active_handles(java_handles); | |
| 2164 compile_handles->set_pop_frame_link(NULL); | |
| 2165 JNIHandleBlock::release_block(compile_handles, thread); // may block | |
| 2166 } | |
| 2167 | |
| 2168 | |
| 2169 // ------------------------------------------------------------------ | |
| 2170 // CompileBroker::check_break_at | |
| 2171 // | |
| 2172 // Should the compilation break at the current compilation. | |
| 2173 bool CompileBroker::check_break_at(methodHandle method, int compile_id, bool is_osr) { | |
| 2174 if (CICountOSR && is_osr && (compile_id == CIBreakAtOSR)) { | |
| 2175 return true; | |
| 2176 } else if( CompilerOracle::should_break_at(method) ) { // break when compiling | |
| 2177 return true; | |
| 2178 } else { | |
| 2179 return (compile_id == CIBreakAt); | |
| 2180 } | |
| 2181 } | |
| 2182 | |
| 2183 // ------------------------------------------------------------------ | |
| 2184 // CompileBroker::collect_statistics | |
| 2185 // | |
| 2186 // Collect statistics about the compilation. | |
| 2187 | |
| 2188 void CompileBroker::collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task) { | |
| 2189 bool success = task->is_success(); | |
|
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2190 methodHandle method (thread, task->method()); |
| 0 | 2191 uint compile_id = task->compile_id(); |
| 2192 bool is_osr = (task->osr_bci() != standard_entry_bci); | |
| 2193 nmethod* code = task->code(); | |
| 2194 CompilerCounters* counters = thread->counters(); | |
| 2195 | |
| 2196 assert(code == NULL || code->is_locked_by_vm(), "will survive the MutexLocker"); | |
| 2197 MutexLocker locker(CompileStatistics_lock); | |
| 2198 | |
| 2199 // _perf variables are production performance counters which are | |
| 2200 // updated regardless of the setting of the CITime and CITimeEach flags | |
| 2201 // | |
| 2202 if (!success) { | |
| 2203 _total_bailout_count++; | |
| 2204 if (UsePerfData) { | |
| 2205 _perf_last_failed_method->set_value(counters->current_method()); | |
| 2206 _perf_last_failed_type->set_value(counters->compile_type()); | |
| 2207 _perf_total_bailout_count->inc(); | |
| 2208 } | |
| 2209 } else if (code == NULL) { | |
| 2210 if (UsePerfData) { | |
| 2211 _perf_last_invalidated_method->set_value(counters->current_method()); | |
| 2212 _perf_last_invalidated_type->set_value(counters->compile_type()); | |
| 2213 _perf_total_invalidated_count->inc(); | |
| 2214 } | |
| 2215 _total_invalidated_count++; | |
| 2216 } else { | |
| 2217 // Compilation succeeded | |
| 2218 | |
| 2219 // update compilation ticks - used by the implementation of | |
| 2220 // java.lang.management.CompilationMBean | |
| 2221 _perf_total_compilation->inc(time.ticks()); | |
| 2222 | |
| 10405 | 2223 _t_total_compilation.add(time); |
| 2224 _peak_compilation_time = time.milliseconds() > _peak_compilation_time ? time.milliseconds() : _peak_compilation_time; | |
| 2225 | |
| 0 | 2226 if (CITime) { |
| 2227 if (is_osr) { | |
| 2228 _t_osr_compilation.add(time); | |
| 2229 _sum_osr_bytes_compiled += method->code_size() + task->num_inlined_bytecodes(); | |
| 2230 } else { | |
| 2231 _t_standard_compilation.add(time); | |
| 2232 _sum_standard_bytes_compiled += method->code_size() + task->num_inlined_bytecodes(); | |
| 2233 } | |
| 2234 } | |
| 2235 | |
| 2236 if (UsePerfData) { | |
| 2237 // save the name of the last method compiled | |
| 2238 _perf_last_method->set_value(counters->current_method()); | |
| 2239 _perf_last_compile_type->set_value(counters->compile_type()); | |
| 2240 _perf_last_compile_size->set_value(method->code_size() + | |
| 2241 task->num_inlined_bytecodes()); | |
| 2242 if (is_osr) { | |
| 2243 _perf_osr_compilation->inc(time.ticks()); | |
| 2244 _perf_sum_osr_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes()); | |
| 2245 } else { | |
| 2246 _perf_standard_compilation->inc(time.ticks()); | |
| 2247 _perf_sum_standard_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes()); | |
| 2248 } | |
| 2249 } | |
| 2250 | |
| 2251 if (CITimeEach) { | |
| 2252 float bytes_per_sec = 1.0 * (method->code_size() + task->num_inlined_bytecodes()) / time.seconds(); | |
| 2253 tty->print_cr("%3d seconds: %f bytes/sec : %f (bytes %d + %d inlined)", | |
| 2254 compile_id, time.seconds(), bytes_per_sec, method->code_size(), task->num_inlined_bytecodes()); | |
| 2255 } | |
| 2256 | |
| 2257 // Collect counts of successful compilations | |
| 1748 | 2258 _sum_nmethod_size += code->total_size(); |
| 2259 _sum_nmethod_code_size += code->insts_size(); | |
| 0 | 2260 _total_compile_count++; |
| 2261 | |
| 2262 if (UsePerfData) { | |
| 1748 | 2263 _perf_sum_nmethod_size->inc( code->total_size()); |
| 2264 _perf_sum_nmethod_code_size->inc(code->insts_size()); | |
| 0 | 2265 _perf_total_compile_count->inc(); |
| 2266 } | |
| 2267 | |
| 2268 if (is_osr) { | |
| 2269 if (UsePerfData) _perf_total_osr_compile_count->inc(); | |
| 2270 _total_osr_compile_count++; | |
| 2271 } else { | |
| 2272 if (UsePerfData) _perf_total_standard_compile_count->inc(); | |
| 2273 _total_standard_compile_count++; | |
| 2274 } | |
| 2275 } | |
| 2276 // set the current method for the thread to null | |
| 2277 if (UsePerfData) counters->set_current_method(""); | |
| 2278 } | |
| 2279 | |
|
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2280 const char* CompileBroker::compiler_name(int comp_level) { |
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2281 AbstractCompiler *comp = CompileBroker::compiler(comp_level); |
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2282 if (comp == NULL) { |
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2283 return "no compiler"; |
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2284 } else { |
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2285 return (comp->name()); |
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2286 } |
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|
2287 } |
| 0 | 2288 |
| 2289 void CompileBroker::print_times() { | |
| 2290 tty->cr(); | |
| 2291 tty->print_cr("Accumulated compiler times (for compiled methods only)"); | |
| 2292 tty->print_cr("------------------------------------------------"); | |
| 2293 //0000000000111111111122222222223333333333444444444455555555556666666666 | |
| 2294 //0123456789012345678901234567890123456789012345678901234567890123456789 | |
| 2295 tty->print_cr(" Total compilation time : %6.3f s", CompileBroker::_t_total_compilation.seconds()); | |
| 2296 tty->print_cr(" Standard compilation : %6.3f s, Average : %2.3f", | |
| 2297 CompileBroker::_t_standard_compilation.seconds(), | |
| 2298 CompileBroker::_t_standard_compilation.seconds() / CompileBroker::_total_standard_compile_count); | |
| 2299 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 | 2300 |
|
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2301 AbstractCompiler *comp = compiler(CompLevel_simple); |
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2302 if (comp != NULL) { |
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2303 comp->print_timers(); |
| 0 | 2304 } |
|
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2305 comp = compiler(CompLevel_full_optimization); |
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|
2306 if (comp != NULL) { |
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|
2307 comp->print_timers(); |
| 1783 | 2308 } |
| 0 | 2309 tty->cr(); |
| 8860 | 2310 tty->print_cr(" Total compiled methods : %6d methods", CompileBroker::_total_compile_count); |
| 2311 tty->print_cr(" Standard compilation : %6d methods", CompileBroker::_total_standard_compile_count); | |
| 2312 tty->print_cr(" On stack replacement : %6d methods", CompileBroker::_total_osr_compile_count); | |
| 0 | 2313 int tcb = CompileBroker::_sum_osr_bytes_compiled + CompileBroker::_sum_standard_bytes_compiled; |
| 2314 tty->print_cr(" Total compiled bytecodes : %6d bytes", tcb); | |
| 2315 tty->print_cr(" Standard compilation : %6d bytes", CompileBroker::_sum_standard_bytes_compiled); | |
| 2316 tty->print_cr(" On stack replacement : %6d bytes", CompileBroker::_sum_osr_bytes_compiled); | |
| 2317 int bps = (int)(tcb / CompileBroker::_t_total_compilation.seconds()); | |
| 2318 tty->print_cr(" Average compilation speed: %6d bytes/s", bps); | |
| 2319 tty->cr(); | |
| 2320 tty->print_cr(" nmethod code size : %6d bytes", CompileBroker::_sum_nmethod_code_size); | |
| 2321 tty->print_cr(" nmethod total size : %6d bytes", CompileBroker::_sum_nmethod_size); | |
| 2322 } | |
| 2323 | |
| 2324 // Debugging output for failure | |
| 2325 void CompileBroker::print_last_compile() { | |
| 2326 if ( _last_compile_level != CompLevel_none && | |
| 2327 compiler(_last_compile_level) != NULL && | |
| 2328 _last_method_compiled != NULL && | |
| 2329 _last_compile_type != no_compile) { | |
| 2330 if (_last_compile_type == osr_compile) { | |
| 2331 tty->print_cr("Last parse: [osr]%d+++(%d) %s", | |
| 2332 _osr_compilation_id, _last_compile_level, _last_method_compiled); | |
| 2333 } else { | |
| 2334 tty->print_cr("Last parse: %d+++(%d) %s", | |
| 2335 _compilation_id, _last_compile_level, _last_method_compiled); | |
| 2336 } | |
| 2337 } | |
| 2338 } | |
| 2339 | |
| 2340 | |
| 2341 void CompileBroker::print_compiler_threads_on(outputStream* st) { | |
| 2342 #ifndef PRODUCT | |
| 2343 st->print_cr("Compiler thread printing unimplemented."); | |
| 2344 st->cr(); | |
| 2345 #endif | |
| 2346 } |