Mercurial > hg > graal-jvmci-8
annotate src/share/vm/compiler/compileBroker.cpp @ 20590:c47fcf523fff
8042428: CompileQueue::free_all() code is incorrect
Summary: Free task after getting next pointer of freelist.
Reviewed-by: kvn, adlertz
author | anoll |
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date | Tue, 06 May 2014 09:52:38 +0200 |
parents | 0c0e68524c17 |
children | 28051f14c328 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1999, 2014, 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 | |
17625 | 135 // These counters are used to assign an unique ID to each compilation. |
136 volatile jint CompileBroker::_compilation_id = 0; | |
137 volatile jint CompileBroker::_osr_compilation_id = 0; | |
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 | |
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186 CompileQueue* CompileBroker::_c2_compile_queue = NULL; |
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187 CompileQueue* CompileBroker::_c1_compile_queue = NULL; |
0 | 188 |
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189 GrowableArray<CompilerThread*>* CompileBroker::_compiler_threads = NULL; |
0 | 190 |
191 | |
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192 class CompilationLog : public StringEventLog { |
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193 public: |
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194 CompilationLog() : StringEventLog("Compilation events") { |
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195 } |
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196 |
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197 void log_compile(JavaThread* thread, CompileTask* task) { |
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198 StringLogMessage lm; |
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199 stringStream sstr = lm.stream(); |
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200 // msg.time_stamp().update_to(tty->time_stamp().ticks()); |
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201 task->print_compilation(&sstr, NULL, true); |
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202 log(thread, "%s", (const char*)lm); |
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203 } |
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204 |
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205 void log_nmethod(JavaThread* thread, nmethod* nm) { |
4944 | 206 log(thread, "nmethod %d%s " INTPTR_FORMAT " code ["INTPTR_FORMAT ", " INTPTR_FORMAT "]", |
207 nm->compile_id(), nm->is_osr_method() ? "%" : "", | |
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208 p2i(nm), p2i(nm->code_begin()), p2i(nm->code_end())); |
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209 } |
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210 |
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211 void log_failure(JavaThread* thread, CompileTask* task, const char* reason, const char* retry_message) { |
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212 StringLogMessage lm; |
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213 lm.print("%4d COMPILE SKIPPED: %s", task->compile_id(), reason); |
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214 if (retry_message != NULL) { |
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215 lm.append(" (%s)", retry_message); |
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216 } |
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217 lm.print("\n"); |
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218 log(thread, "%s", (const char*)lm); |
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219 } |
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220 }; |
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221 |
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222 static CompilationLog* _compilation_log = NULL; |
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223 |
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224 void compileBroker_init() { |
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225 if (LogEvents) { |
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226 _compilation_log = new CompilationLog(); |
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227 } |
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228 } |
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229 |
0 | 230 CompileTaskWrapper::CompileTaskWrapper(CompileTask* task) { |
231 CompilerThread* thread = CompilerThread::current(); | |
232 thread->set_task(task); | |
233 CompileLog* log = thread->log(); | |
234 if (log != NULL) task->log_task_start(log); | |
235 } | |
236 | |
237 CompileTaskWrapper::~CompileTaskWrapper() { | |
238 CompilerThread* thread = CompilerThread::current(); | |
239 CompileTask* task = thread->task(); | |
240 CompileLog* log = thread->log(); | |
241 if (log != NULL) task->log_task_done(log); | |
242 thread->set_task(NULL); | |
243 task->set_code_handle(NULL); | |
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244 thread->set_env(NULL); |
0 | 245 if (task->is_blocking()) { |
246 MutexLocker notifier(task->lock(), thread); | |
247 task->mark_complete(); | |
248 // Notify the waiting thread that the compilation has completed. | |
249 task->lock()->notify_all(); | |
250 } else { | |
251 task->mark_complete(); | |
252 | |
253 // By convention, the compiling thread is responsible for | |
254 // recycling a non-blocking CompileTask. | |
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255 CompileTask::free(task); |
0 | 256 } |
257 } | |
258 | |
259 | |
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260 CompileTask* CompileTask::_task_free_list = NULL; |
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261 #ifdef ASSERT |
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262 int CompileTask::_num_allocated_tasks = 0; |
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263 #endif |
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264 /** |
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265 * Allocate a CompileTask, from the free list if possible. |
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266 */ |
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267 CompileTask* CompileTask::allocate() { |
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268 MutexLocker locker(CompileTaskAlloc_lock); |
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269 CompileTask* task = NULL; |
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270 |
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271 if (_task_free_list != NULL) { |
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272 task = _task_free_list; |
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273 _task_free_list = task->next(); |
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274 task->set_next(NULL); |
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275 } else { |
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276 task = new CompileTask(); |
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277 DEBUG_ONLY(_num_allocated_tasks++;) |
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278 assert (_num_allocated_tasks < 10000, "Leaking compilation tasks?"); |
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279 task->set_next(NULL); |
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280 task->set_is_free(true); |
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281 } |
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282 assert(task->is_free(), "Task must be free."); |
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283 task->set_is_free(false); |
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284 return task; |
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285 } |
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286 |
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287 |
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288 /** |
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289 * Add a task to the free list. |
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290 */ |
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291 void CompileTask::free(CompileTask* task) { |
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292 MutexLocker locker(CompileTaskAlloc_lock); |
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293 if (!task->is_free()) { |
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294 task->set_code(NULL); |
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295 assert(!task->lock()->is_locked(), "Should not be locked when freed"); |
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296 JNIHandles::destroy_global(task->_method_holder); |
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297 JNIHandles::destroy_global(task->_hot_method_holder); |
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298 |
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299 task->set_is_free(true); |
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300 task->set_next(_task_free_list); |
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301 _task_free_list = task; |
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302 } |
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303 } |
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304 |
0 | 305 void CompileTask::initialize(int compile_id, |
306 methodHandle method, | |
307 int osr_bci, | |
308 int comp_level, | |
309 methodHandle hot_method, | |
310 int hot_count, | |
311 const char* comment, | |
312 bool is_blocking) { | |
313 assert(!_lock->is_locked(), "bad locking"); | |
314 | |
315 _compile_id = compile_id; | |
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316 _method = method(); |
7409 | 317 _method_holder = JNIHandles::make_global(method->method_holder()->klass_holder()); |
0 | 318 _osr_bci = osr_bci; |
319 _is_blocking = is_blocking; | |
320 _comp_level = comp_level; | |
321 _num_inlined_bytecodes = 0; | |
322 | |
323 _is_complete = false; | |
324 _is_success = false; | |
325 _code_handle = NULL; | |
326 | |
327 _hot_method = NULL; | |
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328 _hot_method_holder = NULL; |
0 | 329 _hot_count = hot_count; |
330 _time_queued = 0; // tidy | |
331 _comment = comment; | |
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332 _failure_reason = NULL; |
0 | 333 |
334 if (LogCompilation) { | |
335 _time_queued = os::elapsed_counter(); | |
336 if (hot_method.not_null()) { | |
337 if (hot_method == method) { | |
338 _hot_method = _method; | |
339 } else { | |
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340 _hot_method = hot_method(); |
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341 // only add loader or mirror if different from _method_holder |
7409 | 342 _hot_method_holder = JNIHandles::make_global(hot_method->method_holder()->klass_holder()); |
0 | 343 } |
344 } | |
345 } | |
346 | |
347 _next = NULL; | |
348 } | |
349 | |
350 // ------------------------------------------------------------------ | |
351 // CompileTask::code/set_code | |
352 nmethod* CompileTask::code() const { | |
353 if (_code_handle == NULL) return NULL; | |
354 return _code_handle->code(); | |
355 } | |
356 void CompileTask::set_code(nmethod* nm) { | |
357 if (_code_handle == NULL && nm == NULL) return; | |
358 guarantee(_code_handle != NULL, ""); | |
359 _code_handle->set_code(nm); | |
360 if (nm == NULL) _code_handle = NULL; // drop the handle also | |
361 } | |
362 | |
363 | |
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364 void CompileTask::mark_on_stack() { |
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365 // Mark these methods as something redefine classes cannot remove. |
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366 _method->set_on_stack(true); |
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367 if (_hot_method != NULL) { |
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368 _hot_method->set_on_stack(true); |
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369 } |
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370 } |
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371 |
0 | 372 // ------------------------------------------------------------------ |
373 // CompileTask::print | |
374 void CompileTask::print() { | |
375 tty->print("<CompileTask compile_id=%d ", _compile_id); | |
376 tty->print("method="); | |
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377 _method->print_name(tty); |
0 | 378 tty->print_cr(" osr_bci=%d is_blocking=%s is_complete=%s is_success=%s>", |
379 _osr_bci, bool_to_str(_is_blocking), | |
380 bool_to_str(_is_complete), bool_to_str(_is_success)); | |
381 } | |
382 | |
1783 | 383 |
0 | 384 // ------------------------------------------------------------------ |
385 // CompileTask::print_line_on_error | |
386 // | |
387 // This function is called by fatal error handler when the thread | |
388 // causing troubles is a compiler thread. | |
389 // | |
390 // Do not grab any lock, do not allocate memory. | |
391 // | |
392 // Otherwise it's the same as CompileTask::print_line() | |
393 // | |
394 void CompileTask::print_line_on_error(outputStream* st, char* buf, int buflen) { | |
395 // print compiler name | |
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396 st->print("%s:", CompileBroker::compiler_name(comp_level())); |
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397 print_compilation(st); |
0 | 398 } |
399 | |
400 // ------------------------------------------------------------------ | |
401 // CompileTask::print_line | |
402 void CompileTask::print_line() { | |
403 ttyLocker ttyl; // keep the following output all in one block | |
404 // print compiler name if requested | |
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405 if (CIPrintCompilerName) tty->print("%s:", CompileBroker::compiler_name(comp_level())); |
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406 print_compilation(); |
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407 } |
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408 |
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409 |
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410 // ------------------------------------------------------------------ |
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411 // CompileTask::print_compilation_impl |
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412 void CompileTask::print_compilation_impl(outputStream* st, Method* method, int compile_id, int comp_level, |
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413 bool is_osr_method, int osr_bci, bool is_blocking, |
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414 const char* msg, bool short_form) { |
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415 if (!short_form) { |
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416 st->print("%7d ", (int) st->time_stamp().milliseconds()); // print timestamp |
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417 } |
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418 st->print("%4d ", compile_id); // print compilation number |
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419 |
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420 // For unloaded methods the transition to zombie occurs after the |
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421 // method is cleared so it's impossible to report accurate |
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422 // information for that case. |
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423 bool is_synchronized = false; |
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424 bool has_exception_handler = false; |
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425 bool is_native = false; |
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426 if (method != NULL) { |
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427 is_synchronized = method->is_synchronized(); |
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428 has_exception_handler = method->has_exception_handler(); |
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429 is_native = method->is_native(); |
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430 } |
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431 // method attributes |
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432 const char compile_type = is_osr_method ? '%' : ' '; |
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433 const char sync_char = is_synchronized ? 's' : ' '; |
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434 const char exception_char = has_exception_handler ? '!' : ' '; |
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435 const char blocking_char = is_blocking ? 'b' : ' '; |
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436 const char native_char = is_native ? 'n' : ' '; |
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437 |
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438 // print method attributes |
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439 st->print("%c%c%c%c%c ", compile_type, sync_char, exception_char, blocking_char, native_char); |
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440 |
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441 if (TieredCompilation) { |
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442 if (comp_level != -1) st->print("%d ", comp_level); |
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443 else st->print("- "); |
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444 } |
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445 st->print(" "); // more indent |
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446 |
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447 if (method == NULL) { |
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448 st->print("(method)"); |
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449 } else { |
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450 method->print_short_name(st); |
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451 if (is_osr_method) { |
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452 st->print(" @ %d", osr_bci); |
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453 } |
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454 if (method->is_native()) |
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455 st->print(" (native)"); |
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456 else |
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457 st->print(" (%d bytes)", method->code_size()); |
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458 } |
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459 |
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460 if (msg != NULL) { |
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461 st->print(" %s", msg); |
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462 } |
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463 if (!short_form) { |
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464 st->cr(); |
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465 } |
0 | 466 } |
467 | |
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468 // ------------------------------------------------------------------ |
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469 // CompileTask::print_inlining |
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470 void CompileTask::print_inlining(outputStream* st, ciMethod* method, int inline_level, int bci, const char* msg) { |
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471 // 1234567 |
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472 st->print(" "); // print timestamp |
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473 // 1234 |
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474 st->print(" "); // print compilation number |
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475 |
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476 // method attributes |
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477 if (method->is_loaded()) { |
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478 const char sync_char = method->is_synchronized() ? 's' : ' '; |
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479 const char exception_char = method->has_exception_handlers() ? '!' : ' '; |
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480 const char monitors_char = method->has_monitor_bytecodes() ? 'm' : ' '; |
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481 |
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482 // print method attributes |
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483 st->print(" %c%c%c ", sync_char, exception_char, monitors_char); |
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484 } else { |
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485 // %s!bn |
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486 st->print(" "); // print method attributes |
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487 } |
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488 |
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489 if (TieredCompilation) { |
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490 st->print(" "); |
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491 } |
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492 st->print(" "); // more indent |
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493 st->print(" "); // initial inlining indent |
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494 |
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495 for (int i = 0; i < inline_level; i++) st->print(" "); |
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496 |
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497 st->print("@ %d ", bci); // print bci |
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498 method->print_short_name(st); |
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499 if (method->is_loaded()) |
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500 st->print(" (%d bytes)", method->code_size()); |
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501 else |
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502 st->print(" (not loaded)"); |
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503 |
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504 if (msg != NULL) { |
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505 st->print(" %s", msg); |
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506 } |
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507 st->cr(); |
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508 } |
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509 |
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510 // ------------------------------------------------------------------ |
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511 // CompileTask::print_inline_indent |
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512 void CompileTask::print_inline_indent(int inline_level, outputStream* st) { |
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513 // 1234567 |
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514 st->print(" "); // print timestamp |
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515 // 1234 |
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516 st->print(" "); // print compilation number |
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517 // %s!bn |
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518 st->print(" "); // print method attributes |
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519 if (TieredCompilation) { |
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520 st->print(" "); |
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521 } |
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522 st->print(" "); // more indent |
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523 st->print(" "); // initial inlining indent |
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524 for (int i = 0; i < inline_level; i++) st->print(" "); |
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525 } |
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526 |
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527 // ------------------------------------------------------------------ |
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528 // CompileTask::print_compilation |
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529 void CompileTask::print_compilation(outputStream* st, const char* msg, bool short_form) { |
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530 bool is_osr_method = osr_bci() != InvocationEntryBci; |
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531 print_compilation_impl(st, method(), compile_id(), comp_level(), is_osr_method, osr_bci(), is_blocking(), msg, short_form); |
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532 } |
0 | 533 |
534 // ------------------------------------------------------------------ | |
535 // CompileTask::log_task | |
536 void CompileTask::log_task(xmlStream* log) { | |
537 Thread* thread = Thread::current(); | |
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538 methodHandle method(thread, this->method()); |
0 | 539 ResourceMark rm(thread); |
540 | |
541 // <task id='9' method='M' osr_bci='X' level='1' blocking='1' stamp='1.234'> | |
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542 log->print(" compile_id='%d'", _compile_id); |
0 | 543 if (_osr_bci != CompileBroker::standard_entry_bci) { |
544 log->print(" compile_kind='osr'"); // same as nmethod::compile_kind | |
545 } // else compile_kind='c2c' | |
546 if (!method.is_null()) log->method(method); | |
547 if (_osr_bci != CompileBroker::standard_entry_bci) { | |
548 log->print(" osr_bci='%d'", _osr_bci); | |
549 } | |
550 if (_comp_level != CompLevel_highest_tier) { | |
551 log->print(" level='%d'", _comp_level); | |
552 } | |
553 if (_is_blocking) { | |
554 log->print(" blocking='1'"); | |
555 } | |
556 log->stamp(); | |
557 } | |
558 | |
559 | |
560 // ------------------------------------------------------------------ | |
561 // CompileTask::log_task_queued | |
562 void CompileTask::log_task_queued() { | |
563 Thread* thread = Thread::current(); | |
564 ttyLocker ttyl; | |
565 ResourceMark rm(thread); | |
566 | |
567 xtty->begin_elem("task_queued"); | |
568 log_task(xtty); | |
569 if (_comment != NULL) { | |
570 xtty->print(" comment='%s'", _comment); | |
571 } | |
572 if (_hot_method != NULL) { | |
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573 methodHandle hot(thread, _hot_method); |
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574 methodHandle method(thread, _method); |
0 | 575 if (hot() != method()) { |
576 xtty->method(hot); | |
577 } | |
578 } | |
579 if (_hot_count != 0) { | |
580 xtty->print(" hot_count='%d'", _hot_count); | |
581 } | |
582 xtty->end_elem(); | |
583 } | |
584 | |
585 | |
586 // ------------------------------------------------------------------ | |
587 // CompileTask::log_task_start | |
588 void CompileTask::log_task_start(CompileLog* log) { | |
589 log->begin_head("task"); | |
590 log_task(log); | |
591 log->end_head(); | |
592 } | |
593 | |
594 | |
595 // ------------------------------------------------------------------ | |
596 // CompileTask::log_task_done | |
597 void CompileTask::log_task_done(CompileLog* log) { | |
598 Thread* thread = Thread::current(); | |
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599 methodHandle method(thread, this->method()); |
0 | 600 ResourceMark rm(thread); |
601 | |
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602 if (!_is_success) { |
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603 const char* reason = _failure_reason != NULL ? _failure_reason : "unknown"; |
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604 log->elem("failure reason='%s'", reason); |
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605 } |
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606 |
0 | 607 // <task_done ... stamp='1.234'> </task> |
608 nmethod* nm = code(); | |
609 log->begin_elem("task_done success='%d' nmsize='%d' count='%d'", | |
1748 | 610 _is_success, nm == NULL ? 0 : nm->content_size(), |
0 | 611 method->invocation_count()); |
612 int bec = method->backedge_count(); | |
613 if (bec != 0) log->print(" backedge_count='%d'", bec); | |
614 // Note: "_is_complete" is about to be set, but is not. | |
615 if (_num_inlined_bytecodes != 0) { | |
616 log->print(" inlined_bytes='%d'", _num_inlined_bytecodes); | |
617 } | |
618 log->stamp(); | |
619 log->end_elem(); | |
620 log->tail("task"); | |
621 log->clear_identities(); // next task will have different CI | |
622 if (log->unflushed_count() > 2000) { | |
623 log->flush(); | |
624 } | |
625 log->mark_file_end(); | |
626 } | |
627 | |
628 | |
629 | |
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630 /** |
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631 * Add a CompileTask to a CompileQueue |
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632 */ |
0 | 633 void CompileQueue::add(CompileTask* task) { |
634 assert(lock()->owned_by_self(), "must own lock"); | |
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635 assert(!CompileBroker::is_compilation_disabled_forever(), "Do not add task if compilation is turned off forever"); |
0 | 636 |
637 task->set_next(NULL); | |
1783 | 638 task->set_prev(NULL); |
0 | 639 |
640 if (_last == NULL) { | |
641 // The compile queue is empty. | |
642 assert(_first == NULL, "queue is empty"); | |
643 _first = task; | |
644 _last = task; | |
645 } else { | |
646 // Append the task to the queue. | |
647 assert(_last->next() == NULL, "not last"); | |
648 _last->set_next(task); | |
1783 | 649 task->set_prev(_last); |
0 | 650 _last = task; |
651 } | |
1783 | 652 ++_size; |
0 | 653 |
654 // Mark the method as being in the compile queue. | |
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655 task->method()->set_queued_for_compilation(); |
0 | 656 |
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657 NOT_PRODUCT(print();) |
0 | 658 |
659 if (LogCompilation && xtty != NULL) { | |
660 task->log_task_queued(); | |
661 } | |
662 | |
663 // Notify CompilerThreads that a task is available. | |
1783 | 664 lock()->notify_all(); |
0 | 665 } |
666 | |
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667 /** |
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668 * Empties compilation queue by putting all compilation tasks onto |
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669 * a freelist. Furthermore, the method wakes up all threads that are |
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670 * waiting on a compilation task to finish. This can happen if background |
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671 * compilation is disabled. |
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672 */ |
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673 void CompileQueue::free_all() { |
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674 MutexLocker mu(lock()); |
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675 CompileTask* next = _first; |
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676 |
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677 // Iterate over all tasks in the compile queue |
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678 while (next != NULL) { |
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679 CompileTask* current = next; |
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680 next = current->next(); |
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681 // Wake up thread that blocks on the compile task. |
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682 current->lock()->notify(); |
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683 // Put the task back on the freelist. |
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684 CompileTask::free(current); |
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685 } |
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686 _first = NULL; |
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687 |
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688 // Wake up all threads that block on the queue. |
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689 lock()->notify_all(); |
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690 } |
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691 |
0 | 692 // ------------------------------------------------------------------ |
693 // CompileQueue::get | |
694 // | |
695 // Get the next CompileTask from a CompileQueue | |
696 CompileTask* CompileQueue::get() { | |
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697 NMethodSweeper::possibly_sweep(); |
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698 |
0 | 699 MutexLocker locker(lock()); |
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700 // If _first is NULL we have no more compile jobs. There are two reasons for |
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701 // having no compile jobs: First, we compiled everything we wanted. Second, |
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702 // we ran out of code cache so compilation has been disabled. In the latter |
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703 // case we perform code cache sweeps to free memory such that we can re-enable |
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704 // compilation. |
0 | 705 while (_first == NULL) { |
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706 // Exit loop if compilation is disabled forever |
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707 if (CompileBroker::is_compilation_disabled_forever()) { |
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708 return NULL; |
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709 } |
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|
710 |
12324
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711 if (UseCodeCacheFlushing && !CompileBroker::should_compile_new_jobs()) { |
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712 // Wait a certain amount of time to possibly do another sweep. |
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713 // We must wait until stack scanning has happened so that we can |
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714 // transition a method's state from 'not_entrant' to 'zombie'. |
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715 long wait_time = NmethodSweepCheckInterval * 1000; |
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716 if (FLAG_IS_DEFAULT(NmethodSweepCheckInterval)) { |
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717 // Only one thread at a time can do sweeping. Scale the |
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718 // wait time according to the number of compiler threads. |
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719 // As a result, the next sweep is likely to happen every 100ms |
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720 // with an arbitrary number of threads that do sweeping. |
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721 wait_time = 100 * CICompilerCount; |
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722 } |
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723 bool timeout = lock()->wait(!Mutex::_no_safepoint_check_flag, wait_time); |
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724 if (timeout) { |
1538
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725 MutexUnlocker ul(lock()); |
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726 NMethodSweeper::possibly_sweep(); |
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727 } |
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728 } else { |
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729 // If there are no compilation tasks and we can compile new jobs |
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730 // (i.e., there is enough free space in the code cache) there is |
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731 // no need to invoke the sweeper. As a result, the hotness of methods |
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732 // remains unchanged. This behavior is desired, since we want to keep |
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733 // the stable state, i.e., we do not want to evict methods from the |
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734 // code cache if it is unnecessary. |
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735 // We need a timed wait here, since compiler threads can exit if compilation |
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736 // is disabled forever. We use 5 seconds wait time; the exiting of compiler threads |
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737 // is not critical and we do not want idle compiler threads to wake up too often. |
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738 lock()->wait(!Mutex::_no_safepoint_check_flag, 5*1000); |
1538
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739 } |
0 | 740 } |
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741 |
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742 if (CompileBroker::is_compilation_disabled_forever()) { |
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743 return NULL; |
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744 } |
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745 |
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746 CompileTask* task; |
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747 { |
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748 No_Safepoint_Verifier nsv; |
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749 task = CompilationPolicy::policy()->select_task(this); |
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750 } |
1783 | 751 remove(task); |
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752 purge_stale_tasks(); // may temporarily release MCQ lock |
1783 | 753 return task; |
754 } | |
0 | 755 |
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756 // Clean & deallocate stale compile tasks. |
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757 // Temporarily releases MethodCompileQueue lock. |
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758 void CompileQueue::purge_stale_tasks() { |
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759 assert(lock()->owned_by_self(), "must own lock"); |
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760 if (_first_stale != NULL) { |
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761 // Stale tasks are purged when MCQ lock is released, |
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762 // but _first_stale updates are protected by MCQ lock. |
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763 // Once task processing starts and MCQ lock is released, |
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764 // other compiler threads can reuse _first_stale. |
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765 CompileTask* head = _first_stale; |
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766 _first_stale = NULL; |
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767 { |
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768 MutexUnlocker ul(lock()); |
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769 for (CompileTask* task = head; task != NULL; ) { |
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770 CompileTask* next_task = task->next(); |
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771 CompileTaskWrapper ctw(task); // Frees the task |
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772 task->set_failure_reason("stale task"); |
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773 task = next_task; |
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774 } |
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775 } |
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|
776 } |
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777 } |
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778 |
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779 void CompileQueue::remove(CompileTask* task) { |
1783 | 780 assert(lock()->owned_by_self(), "must own lock"); |
781 if (task->prev() != NULL) { | |
782 task->prev()->set_next(task->next()); | |
783 } else { | |
784 // max is the first element | |
785 assert(task == _first, "Sanity"); | |
786 _first = task->next(); | |
0 | 787 } |
788 | |
1783 | 789 if (task->next() != NULL) { |
790 task->next()->set_prev(task->prev()); | |
791 } else { | |
792 // max is the last element | |
793 assert(task == _last, "Sanity"); | |
794 _last = task->prev(); | |
795 } | |
796 --_size; | |
0 | 797 } |
798 | |
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799 void CompileQueue::remove_and_mark_stale(CompileTask* task) { |
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800 assert(lock()->owned_by_self(), "must own lock"); |
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|
801 remove(task); |
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|
802 |
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|
803 // Enqueue the task for reclamation (should be done outside MCQ lock) |
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804 task->set_next(_first_stale); |
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805 task->set_prev(NULL); |
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806 _first_stale = task; |
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807 } |
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808 |
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809 // methods in the compile queue need to be marked as used on the stack |
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810 // so that they don't get reclaimed by Redefine Classes |
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811 void CompileQueue::mark_on_stack() { |
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812 CompileTask* task = _first; |
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813 while (task != NULL) { |
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814 task->mark_on_stack(); |
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815 task = task->next(); |
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816 } |
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817 } |
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818 |
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819 #ifndef PRODUCT |
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820 /** |
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821 * Print entire compilation queue. |
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822 */ |
0 | 823 void CompileQueue::print() { |
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824 if (CIPrintCompileQueue) { |
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825 ttyLocker ttyl; |
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826 tty->print_cr("Contents of %s", name()); |
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827 tty->print_cr("----------------------"); |
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828 CompileTask* task = _first; |
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829 while (task != NULL) { |
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|
830 task->print_line(); |
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831 task = task->next(); |
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832 } |
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833 tty->print_cr("----------------------"); |
0 | 834 } |
835 } | |
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836 #endif // PRODUCT |
0 | 837 |
838 CompilerCounters::CompilerCounters(const char* thread_name, int instance, TRAPS) { | |
839 | |
840 _current_method[0] = '\0'; | |
841 _compile_type = CompileBroker::no_compile; | |
842 | |
843 if (UsePerfData) { | |
844 ResourceMark rm; | |
845 | |
846 // create the thread instance name space string - don't create an | |
847 // instance subspace if instance is -1 - keeps the adapterThread | |
848 // counters from having a ".0" namespace. | |
849 const char* thread_i = (instance == -1) ? thread_name : | |
850 PerfDataManager::name_space(thread_name, instance); | |
851 | |
852 | |
853 char* name = PerfDataManager::counter_name(thread_i, "method"); | |
854 _perf_current_method = | |
855 PerfDataManager::create_string_variable(SUN_CI, name, | |
856 cmname_buffer_length, | |
857 _current_method, CHECK); | |
858 | |
859 name = PerfDataManager::counter_name(thread_i, "type"); | |
860 _perf_compile_type = PerfDataManager::create_variable(SUN_CI, name, | |
861 PerfData::U_None, | |
862 (jlong)_compile_type, | |
863 CHECK); | |
864 | |
865 name = PerfDataManager::counter_name(thread_i, "time"); | |
866 _perf_time = PerfDataManager::create_counter(SUN_CI, name, | |
867 PerfData::U_Ticks, CHECK); | |
868 | |
869 name = PerfDataManager::counter_name(thread_i, "compiles"); | |
870 _perf_compiles = PerfDataManager::create_counter(SUN_CI, name, | |
871 PerfData::U_Events, CHECK); | |
872 } | |
873 } | |
874 | |
875 // ------------------------------------------------------------------ | |
876 // CompileBroker::compilation_init | |
877 // | |
878 // Initialize the Compilation object | |
879 void CompileBroker::compilation_init() { | |
880 _last_method_compiled[0] = '\0'; | |
881 | |
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882 // No need to initialize compilation system if we do not use it. |
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883 if (!UseCompiler) { |
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884 return; |
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885 } |
1970 | 886 #ifndef SHARK |
0 | 887 // Set the interface to the current compiler(s). |
1783 | 888 int c1_count = CompilationPolicy::policy()->compiler_count(CompLevel_simple); |
889 int c2_count = CompilationPolicy::policy()->compiler_count(CompLevel_full_optimization); | |
0 | 890 #ifdef COMPILER1 |
1783 | 891 if (c1_count > 0) { |
892 _compilers[0] = new Compiler(); | |
893 } | |
0 | 894 #endif // COMPILER1 |
895 | |
896 #ifdef COMPILER2 | |
1783 | 897 if (c2_count > 0) { |
898 _compilers[1] = new C2Compiler(); | |
899 } | |
0 | 900 #endif // COMPILER2 |
901 | |
1970 | 902 #else // SHARK |
903 int c1_count = 0; | |
904 int c2_count = 1; | |
905 | |
906 _compilers[1] = new SharkCompiler(); | |
907 #endif // SHARK | |
1692 | 908 |
0 | 909 // Start the CompilerThreads |
1783 | 910 init_compiler_threads(c1_count, c2_count); |
0 | 911 // totalTime performance counter is always created as it is required |
912 // by the implementation of java.lang.management.CompilationMBean. | |
913 { | |
914 EXCEPTION_MARK; | |
915 _perf_total_compilation = | |
916 PerfDataManager::create_counter(JAVA_CI, "totalTime", | |
917 PerfData::U_Ticks, CHECK); | |
918 } | |
919 | |
920 | |
921 if (UsePerfData) { | |
922 | |
923 EXCEPTION_MARK; | |
924 | |
925 // create the jvmstat performance counters | |
926 _perf_osr_compilation = | |
927 PerfDataManager::create_counter(SUN_CI, "osrTime", | |
928 PerfData::U_Ticks, CHECK); | |
929 | |
930 _perf_standard_compilation = | |
931 PerfDataManager::create_counter(SUN_CI, "standardTime", | |
932 PerfData::U_Ticks, CHECK); | |
933 | |
934 _perf_total_bailout_count = | |
935 PerfDataManager::create_counter(SUN_CI, "totalBailouts", | |
936 PerfData::U_Events, CHECK); | |
937 | |
938 _perf_total_invalidated_count = | |
939 PerfDataManager::create_counter(SUN_CI, "totalInvalidates", | |
940 PerfData::U_Events, CHECK); | |
941 | |
942 _perf_total_compile_count = | |
943 PerfDataManager::create_counter(SUN_CI, "totalCompiles", | |
944 PerfData::U_Events, CHECK); | |
945 _perf_total_osr_compile_count = | |
946 PerfDataManager::create_counter(SUN_CI, "osrCompiles", | |
947 PerfData::U_Events, CHECK); | |
948 | |
949 _perf_total_standard_compile_count = | |
950 PerfDataManager::create_counter(SUN_CI, "standardCompiles", | |
951 PerfData::U_Events, CHECK); | |
952 | |
953 _perf_sum_osr_bytes_compiled = | |
954 PerfDataManager::create_counter(SUN_CI, "osrBytes", | |
955 PerfData::U_Bytes, CHECK); | |
956 | |
957 _perf_sum_standard_bytes_compiled = | |
958 PerfDataManager::create_counter(SUN_CI, "standardBytes", | |
959 PerfData::U_Bytes, CHECK); | |
960 | |
961 _perf_sum_nmethod_size = | |
962 PerfDataManager::create_counter(SUN_CI, "nmethodSize", | |
963 PerfData::U_Bytes, CHECK); | |
964 | |
965 _perf_sum_nmethod_code_size = | |
966 PerfDataManager::create_counter(SUN_CI, "nmethodCodeSize", | |
967 PerfData::U_Bytes, CHECK); | |
968 | |
969 _perf_last_method = | |
970 PerfDataManager::create_string_variable(SUN_CI, "lastMethod", | |
971 CompilerCounters::cmname_buffer_length, | |
972 "", CHECK); | |
973 | |
974 _perf_last_failed_method = | |
975 PerfDataManager::create_string_variable(SUN_CI, "lastFailedMethod", | |
976 CompilerCounters::cmname_buffer_length, | |
977 "", CHECK); | |
978 | |
979 _perf_last_invalidated_method = | |
980 PerfDataManager::create_string_variable(SUN_CI, "lastInvalidatedMethod", | |
981 CompilerCounters::cmname_buffer_length, | |
982 "", CHECK); | |
983 | |
984 _perf_last_compile_type = | |
985 PerfDataManager::create_variable(SUN_CI, "lastType", | |
986 PerfData::U_None, | |
987 (jlong)CompileBroker::no_compile, | |
988 CHECK); | |
989 | |
990 _perf_last_compile_size = | |
991 PerfDataManager::create_variable(SUN_CI, "lastSize", | |
992 PerfData::U_Bytes, | |
993 (jlong)CompileBroker::no_compile, | |
994 CHECK); | |
995 | |
996 | |
997 _perf_last_failed_type = | |
998 PerfDataManager::create_variable(SUN_CI, "lastFailedType", | |
999 PerfData::U_None, | |
1000 (jlong)CompileBroker::no_compile, | |
1001 CHECK); | |
1002 | |
1003 _perf_last_invalidated_type = | |
1004 PerfDataManager::create_variable(SUN_CI, "lastInvalidatedType", | |
1005 PerfData::U_None, | |
1006 (jlong)CompileBroker::no_compile, | |
1007 CHECK); | |
1008 } | |
1009 | |
1010 _initialized = true; | |
1011 } | |
1012 | |
1013 | |
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1014 CompilerThread* CompileBroker::make_compiler_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, |
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1015 AbstractCompiler* comp, TRAPS) { |
0 | 1016 CompilerThread* compiler_thread = NULL; |
1017 | |
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1018 Klass* k = |
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1019 SystemDictionary::resolve_or_fail(vmSymbols::java_lang_Thread(), |
0 | 1020 true, CHECK_0); |
1021 instanceKlassHandle klass (THREAD, k); | |
1022 instanceHandle thread_oop = klass->allocate_instance_handle(CHECK_0); | |
1023 Handle string = java_lang_String::create_from_str(name, CHECK_0); | |
1024 | |
1025 // Initialize thread_oop to put it into the system threadGroup | |
1026 Handle thread_group (THREAD, Universe::system_thread_group()); | |
1027 JavaValue result(T_VOID); | |
1028 JavaCalls::call_special(&result, thread_oop, | |
1029 klass, | |
2177
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1030 vmSymbols::object_initializer_name(), |
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1031 vmSymbols::threadgroup_string_void_signature(), |
0 | 1032 thread_group, |
1033 string, | |
1034 CHECK_0); | |
1035 | |
1036 { | |
1037 MutexLocker mu(Threads_lock, THREAD); | |
1038 compiler_thread = new CompilerThread(queue, counters); | |
1039 // At this point the new CompilerThread data-races with this startup | |
1040 // thread (which I believe is the primoridal thread and NOT the VM | |
1041 // thread). This means Java bytecodes being executed at startup can | |
1042 // queue compile jobs which will run at whatever default priority the | |
1043 // newly created CompilerThread runs at. | |
1044 | |
1045 | |
1046 // At this point it may be possible that no osthread was created for the | |
1047 // JavaThread due to lack of memory. We would have to throw an exception | |
1048 // in that case. However, since this must work and we do not allow | |
1049 // exceptions anyway, check and abort if this fails. | |
1050 | |
1051 if (compiler_thread == NULL || compiler_thread->osthread() == NULL){ | |
1052 vm_exit_during_initialization("java.lang.OutOfMemoryError", | |
1053 "unable to create new native thread"); | |
1054 } | |
1055 | |
1056 java_lang_Thread::set_thread(thread_oop(), compiler_thread); | |
1057 | |
1058 // Note that this only sets the JavaThread _priority field, which by | |
1059 // definition is limited to Java priorities and not OS priorities. | |
1060 // The os-priority is set in the CompilerThread startup code itself | |
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1061 |
0 | 1062 java_lang_Thread::set_priority(thread_oop(), NearMaxPriority); |
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1063 |
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1064 // Note that we cannot call os::set_priority because it expects Java |
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1065 // priorities and we are *explicitly* using OS priorities so that it's |
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1066 // possible to set the compiler thread priority higher than any Java |
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1067 // thread. |
0 | 1068 |
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1069 int native_prio = CompilerThreadPriority; |
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1070 if (native_prio == -1) { |
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1071 if (UseCriticalCompilerThreadPriority) { |
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1072 native_prio = os::java_to_os_priority[CriticalPriority]; |
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1073 } else { |
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1074 native_prio = os::java_to_os_priority[NearMaxPriority]; |
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1075 } |
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1076 } |
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1077 os::set_native_priority(compiler_thread, native_prio); |
0 | 1078 |
1079 java_lang_Thread::set_daemon(thread_oop()); | |
1080 | |
1081 compiler_thread->set_threadObj(thread_oop()); | |
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1082 compiler_thread->set_compiler(comp); |
0 | 1083 Threads::add(compiler_thread); |
1084 Thread::start(compiler_thread); | |
1085 } | |
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1086 |
0 | 1087 // Let go of Threads_lock before yielding |
1088 os::yield(); // make sure that the compiler thread is started early (especially helpful on SOLARIS) | |
1089 | |
1090 return compiler_thread; | |
1091 } | |
1092 | |
1093 | |
1783 | 1094 void CompileBroker::init_compiler_threads(int c1_compiler_count, int c2_compiler_count) { |
0 | 1095 EXCEPTION_MARK; |
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1096 #if !defined(ZERO) && !defined(SHARK) |
1783 | 1097 assert(c2_compiler_count > 0 || c1_compiler_count > 0, "No compilers?"); |
2447 | 1098 #endif // !ZERO && !SHARK |
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1099 // Initialize the compilation queue |
1783 | 1100 if (c2_compiler_count > 0) { |
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1101 _c2_compile_queue = new CompileQueue("C2 CompileQueue", MethodCompileQueue_lock); |
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1102 _compilers[1]->set_num_compiler_threads(c2_compiler_count); |
1783 | 1103 } |
1104 if (c1_compiler_count > 0) { | |
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1105 _c1_compile_queue = new CompileQueue("C1 CompileQueue", MethodCompileQueue_lock); |
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1106 _compilers[0]->set_num_compiler_threads(c1_compiler_count); |
1783 | 1107 } |
0 | 1108 |
1783 | 1109 int compiler_count = c1_compiler_count + c2_compiler_count; |
1110 | |
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1111 _compiler_threads = |
6197 | 1112 new (ResourceObj::C_HEAP, mtCompiler) GrowableArray<CompilerThread*>(compiler_count, true); |
0 | 1113 |
1114 char name_buffer[256]; | |
1783 | 1115 for (int i = 0; i < c2_compiler_count; i++) { |
0 | 1116 // Create a name for our thread. |
1783 | 1117 sprintf(name_buffer, "C2 CompilerThread%d", i); |
0 | 1118 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK); |
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1119 // Shark and C2 |
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1120 CompilerThread* new_thread = make_compiler_thread(name_buffer, _c2_compile_queue, counters, _compilers[1], CHECK); |
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1121 _compiler_threads->append(new_thread); |
0 | 1122 } |
1783 | 1123 |
1124 for (int i = c2_compiler_count; i < compiler_count; i++) { | |
1125 // Create a name for our thread. | |
1126 sprintf(name_buffer, "C1 CompilerThread%d", i); | |
1127 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK); | |
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1128 // C1 |
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1129 CompilerThread* new_thread = make_compiler_thread(name_buffer, _c1_compile_queue, counters, _compilers[0], CHECK); |
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1130 _compiler_threads->append(new_thread); |
1783 | 1131 } |
1132 | |
0 | 1133 if (UsePerfData) { |
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1134 PerfDataManager::create_constant(SUN_CI, "threads", PerfData::U_Bytes, compiler_count, CHECK); |
0 | 1135 } |
1136 } | |
1137 | |
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1138 |
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1139 /** |
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1140 * Set the methods on the stack as on_stack so that redefine classes doesn't |
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1141 * reclaim them. This method is executed at a safepoint. |
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1142 */ |
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1143 void CompileBroker::mark_on_stack() { |
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1144 assert(SafepointSynchronize::is_at_safepoint(), "sanity check"); |
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1145 // Since we are at a safepoint, we do not need a lock to access |
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1146 // the compile queues. |
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1147 if (_c2_compile_queue != NULL) { |
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1148 _c2_compile_queue->mark_on_stack(); |
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1149 } |
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1150 if (_c1_compile_queue != NULL) { |
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1151 _c1_compile_queue->mark_on_stack(); |
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1152 } |
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1153 } |
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1154 |
0 | 1155 // ------------------------------------------------------------------ |
1156 // CompileBroker::compile_method | |
1157 // | |
1158 // Request compilation of a method. | |
1159 void CompileBroker::compile_method_base(methodHandle method, | |
1160 int osr_bci, | |
1161 int comp_level, | |
1162 methodHandle hot_method, | |
1163 int hot_count, | |
1164 const char* comment, | |
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1165 Thread* thread) { |
0 | 1166 // do nothing if compiler thread(s) is not available |
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1167 if (!_initialized) { |
0 | 1168 return; |
1169 } | |
1170 | |
1171 guarantee(!method->is_abstract(), "cannot compile abstract methods"); | |
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1172 assert(method->method_holder()->oop_is_instance(), |
0 | 1173 "sanity check"); |
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1174 assert(!method->method_holder()->is_not_initialized(), |
0 | 1175 "method holder must be initialized"); |
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1176 assert(!method->is_method_handle_intrinsic(), "do not enqueue these guys"); |
0 | 1177 |
1178 if (CIPrintRequests) { | |
1179 tty->print("request: "); | |
1180 method->print_short_name(tty); | |
1181 if (osr_bci != InvocationEntryBci) { | |
1182 tty->print(" osr_bci: %d", osr_bci); | |
1183 } | |
1184 tty->print(" comment: %s count: %d", comment, hot_count); | |
1185 if (!hot_method.is_null()) { | |
1186 tty->print(" hot: "); | |
1187 if (hot_method() != method()) { | |
1188 hot_method->print_short_name(tty); | |
1189 } else { | |
1190 tty->print("yes"); | |
1191 } | |
1192 } | |
1193 tty->cr(); | |
1194 } | |
1195 | |
1196 // A request has been made for compilation. Before we do any | |
1197 // real work, check to see if the method has been compiled | |
1198 // in the meantime with a definitive result. | |
1199 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
1200 return; | |
1201 } | |
1202 | |
2403 | 1203 #ifndef PRODUCT |
1204 if (osr_bci != -1 && !FLAG_IS_DEFAULT(OSROnlyBCI)) { | |
1205 if ((OSROnlyBCI > 0) ? (OSROnlyBCI != osr_bci) : (-OSROnlyBCI == osr_bci)) { | |
1206 // Positive OSROnlyBCI means only compile that bci. Negative means don't compile that BCI. | |
1207 return; | |
1208 } | |
1209 } | |
1210 #endif | |
1783 | 1211 |
0 | 1212 // If this method is already in the compile queue, then |
1213 // we do not block the current thread. | |
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1214 if (compilation_is_in_queue(method)) { |
0 | 1215 // We may want to decay our counter a bit here to prevent |
1216 // multiple denied requests for compilation. This is an | |
1217 // open compilation policy issue. Note: The other possibility, | |
1218 // in the case that this is a blocking compile request, is to have | |
1219 // all subsequent blocking requesters wait for completion of | |
1220 // ongoing compiles. Note that in this case we'll need a protocol | |
1221 // for freeing the associated compile tasks. [Or we could have | |
1222 // a single static monitor on which all these waiters sleep.] | |
1223 return; | |
1224 } | |
1225 | |
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1226 // If the requesting thread is holding the pending list lock |
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1227 // then we just return. We can't risk blocking while holding |
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1228 // the pending list lock or a 3-way deadlock may occur |
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1229 // between the reference handler thread, a GC (instigated |
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1230 // by a compiler thread), and compiled method registration. |
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1231 if (InstanceRefKlass::owns_pending_list_lock(JavaThread::current())) { |
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1232 return; |
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1233 } |
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1234 |
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1235 if (TieredCompilation) { |
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1236 // Tiered policy requires MethodCounters to exist before adding a method to |
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1237 // the queue. Create if we don't have them yet. |
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1238 method->get_method_counters(thread); |
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1239 } |
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1240 |
0 | 1241 // Outputs from the following MutexLocker block: |
1242 CompileTask* task = NULL; | |
1243 bool blocking = false; | |
1783 | 1244 CompileQueue* queue = compile_queue(comp_level); |
0 | 1245 |
1246 // Acquire our lock. | |
1247 { | |
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1248 MutexLocker locker(queue->lock(), thread); |
0 | 1249 |
1250 // Make sure the method has not slipped into the queues since | |
1251 // last we checked; note that those checks were "fast bail-outs". | |
1252 // Here we need to be more careful, see 14012000 below. | |
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1253 if (compilation_is_in_queue(method)) { |
0 | 1254 return; |
1255 } | |
1256 | |
1257 // We need to check again to see if the compilation has | |
1258 // completed. A previous compilation may have registered | |
1259 // some result. | |
1260 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
1261 return; | |
1262 } | |
1263 | |
1264 // We now know that this compilation is not pending, complete, | |
1265 // or prohibited. Assign a compile_id to this compilation | |
1266 // and check to see if it is in our [Start..Stop) range. | |
17625 | 1267 int compile_id = assign_compile_id(method, osr_bci); |
0 | 1268 if (compile_id == 0) { |
1269 // The compilation falls outside the allowed range. | |
1270 return; | |
1271 } | |
1272 | |
1273 // Should this thread wait for completion of the compile? | |
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1274 blocking = is_compile_blocking(); |
0 | 1275 |
1276 // We will enter the compilation in the queue. | |
1277 // 14012000: Note that this sets the queued_for_compile bits in | |
1278 // the target method. We can now reason that a method cannot be | |
1279 // queued for compilation more than once, as follows: | |
1280 // Before a thread queues a task for compilation, it first acquires | |
1281 // the compile queue lock, then checks if the method's queued bits | |
1282 // are set or it has already been compiled. Thus there can not be two | |
1283 // instances of a compilation task for the same method on the | |
1284 // compilation queue. Consider now the case where the compilation | |
1285 // thread has already removed a task for that method from the queue | |
1286 // and is in the midst of compiling it. In this case, the | |
1287 // queued_for_compile bits must be set in the method (and these | |
1288 // will be visible to the current thread, since the bits were set | |
1289 // under protection of the compile queue lock, which we hold now. | |
1290 // When the compilation completes, the compiler thread first sets | |
1291 // the compilation result and then clears the queued_for_compile | |
1292 // bits. Neither of these actions are protected by a barrier (or done | |
1293 // under the protection of a lock), so the only guarantee we have | |
1294 // (on machines with TSO (Total Store Order)) is that these values | |
1295 // will update in that order. As a result, the only combinations of | |
1296 // these bits that the current thread will see are, in temporal order: | |
1297 // <RESULT, QUEUE> : | |
1298 // <0, 1> : in compile queue, but not yet compiled | |
1299 // <1, 1> : compiled but queue bit not cleared | |
1300 // <1, 0> : compiled and queue bit cleared | |
1301 // Because we first check the queue bits then check the result bits, | |
1302 // we are assured that we cannot introduce a duplicate task. | |
1303 // Note that if we did the tests in the reverse order (i.e. check | |
1304 // result then check queued bit), we could get the result bit before | |
1305 // the compilation completed, and the queue bit after the compilation | |
1306 // completed, and end up introducing a "duplicate" (redundant) task. | |
1307 // In that case, the compiler thread should first check if a method | |
1308 // has already been compiled before trying to compile it. | |
1309 // NOTE: in the event that there are multiple compiler threads and | |
1310 // there is de-optimization/recompilation, things will get hairy, | |
1311 // and in that case it's best to protect both the testing (here) of | |
1312 // these bits, and their updating (here and elsewhere) under a | |
1313 // common lock. | |
1783 | 1314 task = create_compile_task(queue, |
0 | 1315 compile_id, method, |
1316 osr_bci, comp_level, | |
1317 hot_method, hot_count, comment, | |
1318 blocking); | |
1319 } | |
1320 | |
1321 if (blocking) { | |
1322 wait_for_completion(task); | |
1323 } | |
1324 } | |
1325 | |
1326 | |
1327 nmethod* CompileBroker::compile_method(methodHandle method, int osr_bci, | |
1783 | 1328 int comp_level, |
0 | 1329 methodHandle hot_method, int hot_count, |
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1330 const char* comment, Thread* THREAD) { |
0 | 1331 // make sure arguments make sense |
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1332 assert(method->method_holder()->oop_is_instance(), "not an instance method"); |
0 | 1333 assert(osr_bci == InvocationEntryBci || (0 <= osr_bci && osr_bci < method->code_size()), "bci out of range"); |
1334 assert(!method->is_abstract() && (osr_bci == InvocationEntryBci || !method->is_native()), "cannot compile abstract/native methods"); | |
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1335 assert(!method->method_holder()->is_not_initialized(), "method holder must be initialized"); |
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1336 // allow any levels for WhiteBox |
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1337 assert(WhiteBoxAPI || TieredCompilation || comp_level == CompLevel_highest_tier, "only CompLevel_highest_tier must be used in non-tiered"); |
0 | 1338 // return quickly if possible |
1339 | |
1340 // lock, make sure that the compilation | |
1341 // isn't prohibited in a straightforward way. | |
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1342 AbstractCompiler *comp = CompileBroker::compiler(comp_level); |
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1343 if (comp == NULL || !comp->can_compile_method(method) || |
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1344 compilation_is_prohibited(method, osr_bci, comp_level)) { |
0 | 1345 return NULL; |
1346 } | |
1347 | |
1348 if (osr_bci == InvocationEntryBci) { | |
1349 // standard compilation | |
1350 nmethod* method_code = method->code(); | |
1783 | 1351 if (method_code != NULL) { |
1352 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
1353 return method_code; | |
1354 } | |
0 | 1355 } |
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1356 if (method->is_not_compilable(comp_level)) { |
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1357 return NULL; |
1202 | 1358 } |
0 | 1359 } else { |
1360 // osr compilation | |
1361 #ifndef TIERED | |
1362 // seems like an assert of dubious value | |
1783 | 1363 assert(comp_level == CompLevel_highest_tier, |
0 | 1364 "all OSR compiles are assumed to be at a single compilation lavel"); |
1365 #endif // TIERED | |
1783 | 1366 // We accept a higher level osr method |
1367 nmethod* nm = method->lookup_osr_nmethod_for(osr_bci, comp_level, false); | |
0 | 1368 if (nm != NULL) return nm; |
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1369 if (method->is_not_osr_compilable(comp_level)) return NULL; |
0 | 1370 } |
1371 | |
1372 assert(!HAS_PENDING_EXCEPTION, "No exception should be present"); | |
1373 // some prerequisites that are compiler specific | |
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1374 if (comp->is_c2() || comp->is_shark()) { |
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1375 method->constants()->resolve_string_constants(CHECK_AND_CLEAR_NULL); |
0 | 1376 // Resolve all classes seen in the signature of the method |
1377 // we are compiling. | |
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1378 Method::load_signature_classes(method, CHECK_AND_CLEAR_NULL); |
0 | 1379 } |
1380 | |
1381 // If the method is native, do the lookup in the thread requesting | |
1382 // the compilation. Native lookups can load code, which is not | |
1383 // permitted during compilation. | |
1384 // | |
1385 // Note: A native method implies non-osr compilation which is | |
1386 // checked with an assertion at the entry of this method. | |
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1387 if (method->is_native() && !method->is_method_handle_intrinsic()) { |
0 | 1388 bool in_base_library; |
1389 address adr = NativeLookup::lookup(method, in_base_library, THREAD); | |
1390 if (HAS_PENDING_EXCEPTION) { | |
1391 // In case of an exception looking up the method, we just forget | |
1392 // about it. The interpreter will kick-in and throw the exception. | |
1393 method->set_not_compilable(); // implies is_not_osr_compilable() | |
1394 CLEAR_PENDING_EXCEPTION; | |
1395 return NULL; | |
1396 } | |
1397 assert(method->has_native_function(), "must have native code by now"); | |
1398 } | |
1399 | |
1400 // RedefineClasses() has replaced this method; just return | |
1401 if (method->is_old()) { | |
1402 return NULL; | |
1403 } | |
1404 | |
1405 // JVMTI -- post_compile_event requires jmethod_id() that may require | |
1406 // a lock the compiling thread can not acquire. Prefetch it here. | |
1407 if (JvmtiExport::should_post_compiled_method_load()) { | |
1408 method->jmethod_id(); | |
1409 } | |
1410 | |
1411 // do the compilation | |
1412 if (method->is_native()) { | |
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1413 if (!PreferInterpreterNativeStubs || method->is_method_handle_intrinsic()) { |
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1414 // To properly handle the appendix argument for out-of-line calls we are using a small trampoline that |
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1415 // pops off the appendix argument and jumps to the target (see gen_special_dispatch in SharedRuntime). |
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1416 // |
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1417 // Since normal compiled-to-compiled calls are not able to handle such a thing we MUST generate an adapter |
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1418 // in this case. If we can't generate one and use it we can not execute the out-of-line method handle calls. |
17625 | 1419 AdapterHandlerLibrary::create_native_wrapper(method); |
0 | 1420 } else { |
1421 return NULL; | |
1422 } | |
1423 } else { | |
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1424 // If the compiler is shut off due to code cache getting full |
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1425 // fail out now so blocking compiles dont hang the java thread |
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1426 if (!should_compile_new_jobs()) { |
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1427 CompilationPolicy::policy()->delay_compilation(method()); |
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1428 return NULL; |
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1429 } |
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1430 compile_method_base(method, osr_bci, comp_level, hot_method, hot_count, comment, THREAD); |
0 | 1431 } |
1432 | |
1433 // return requested nmethod | |
1783 | 1434 // We accept a higher level osr method |
1435 return osr_bci == InvocationEntryBci ? method->code() : method->lookup_osr_nmethod_for(osr_bci, comp_level, false); | |
0 | 1436 } |
1437 | |
1438 | |
1439 // ------------------------------------------------------------------ | |
1440 // CompileBroker::compilation_is_complete | |
1441 // | |
1442 // See if compilation of this method is already complete. | |
1443 bool CompileBroker::compilation_is_complete(methodHandle method, | |
1444 int osr_bci, | |
1445 int comp_level) { | |
1446 bool is_osr = (osr_bci != standard_entry_bci); | |
1447 if (is_osr) { | |
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1448 if (method->is_not_osr_compilable(comp_level)) { |
0 | 1449 return true; |
1450 } else { | |
1783 | 1451 nmethod* result = method->lookup_osr_nmethod_for(osr_bci, comp_level, true); |
0 | 1452 return (result != NULL); |
1453 } | |
1454 } else { | |
1455 if (method->is_not_compilable(comp_level)) { | |
1456 return true; | |
1457 } else { | |
1458 nmethod* result = method->code(); | |
1459 if (result == NULL) return false; | |
1783 | 1460 return comp_level == result->comp_level(); |
0 | 1461 } |
1462 } | |
1463 } | |
1464 | |
1465 | |
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1466 /** |
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1467 * See if this compilation is already requested. |
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1468 * |
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1469 * Implementation note: there is only a single "is in queue" bit |
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1470 * for each method. This means that the check below is overly |
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1471 * conservative in the sense that an osr compilation in the queue |
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1472 * will block a normal compilation from entering the queue (and vice |
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1473 * versa). This can be remedied by a full queue search to disambiguate |
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1474 * cases. If it is deemed profitable, this may be done. |
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1475 */ |
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1476 bool CompileBroker::compilation_is_in_queue(methodHandle method) { |
0 | 1477 return method->queued_for_compilation(); |
1478 } | |
1479 | |
1480 // ------------------------------------------------------------------ | |
1481 // CompileBroker::compilation_is_prohibited | |
1482 // | |
1483 // See if this compilation is not allowed. | |
1484 bool CompileBroker::compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level) { | |
1485 bool is_native = method->is_native(); | |
1486 // Some compilers may not support the compilation of natives. | |
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1487 AbstractCompiler *comp = compiler(comp_level); |
0 | 1488 if (is_native && |
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1489 (!CICompileNatives || comp == NULL || !comp->supports_native())) { |
1783 | 1490 method->set_not_compilable_quietly(comp_level); |
0 | 1491 return true; |
1492 } | |
1493 | |
1494 bool is_osr = (osr_bci != standard_entry_bci); | |
1495 // Some compilers may not support on stack replacement. | |
1496 if (is_osr && | |
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1497 (!CICompileOSR || comp == NULL || !comp->supports_osr())) { |
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1498 method->set_not_osr_compilable(comp_level); |
0 | 1499 return true; |
1500 } | |
1501 | |
1502 // The method may be explicitly excluded by the user. | |
1503 bool quietly; | |
1504 if (CompilerOracle::should_exclude(method, quietly)) { | |
1505 if (!quietly) { | |
1506 // This does not happen quietly... | |
1507 ResourceMark rm; | |
1508 tty->print("### Excluding %s:%s", | |
1509 method->is_native() ? "generation of native wrapper" : "compile", | |
1510 (method->is_static() ? " static" : "")); | |
1511 method->print_short_name(tty); | |
1512 tty->cr(); | |
1513 } | |
7998 | 1514 method->set_not_compilable(CompLevel_all, !quietly, "excluded by CompilerOracle"); |
0 | 1515 } |
1516 | |
1517 return false; | |
1518 } | |
1519 | |
17625 | 1520 /** |
1521 * Generate serialized IDs for compilation requests. If certain debugging flags are used | |
1522 * and the ID is not within the specified range, the method is not compiled and 0 is returned. | |
1523 * The function also allows to generate separate compilation IDs for OSR compilations. | |
1524 */ | |
1525 int CompileBroker::assign_compile_id(methodHandle method, int osr_bci) { | |
1526 #ifdef ASSERT | |
0 | 1527 bool is_osr = (osr_bci != standard_entry_bci); |
17625 | 1528 int id; |
1529 if (method->is_native()) { | |
1530 assert(!is_osr, "can't be osr"); | |
1531 // Adapters, native wrappers and method handle intrinsics | |
1532 // should be generated always. | |
1533 return Atomic::add(1, &_compilation_id); | |
1534 } else if (CICountOSR && is_osr) { | |
1535 id = Atomic::add(1, &_osr_compilation_id); | |
1536 if (CIStartOSR <= id && id < CIStopOSR) { | |
0 | 1537 return id; |
1538 } | |
1539 } else { | |
17625 | 1540 id = Atomic::add(1, &_compilation_id); |
1541 if (CIStart <= id && id < CIStop) { | |
0 | 1542 return id; |
1543 } | |
1544 } | |
1545 | |
1546 // Method was not in the appropriate compilation range. | |
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1547 method->set_not_compilable_quietly(); |
0 | 1548 return 0; |
17625 | 1549 #else |
1550 // CICountOSR is a develop flag and set to 'false' by default. In a product built, | |
1551 // only _compilation_id is incremented. | |
1552 return Atomic::add(1, &_compilation_id); | |
1553 #endif | |
0 | 1554 } |
1555 | |
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1556 /** |
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1557 * Should the current thread block until this compilation request |
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1558 * has been fulfilled? |
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1559 */ |
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1560 bool CompileBroker::is_compile_blocking() { |
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|
1561 assert(!InstanceRefKlass::owns_pending_list_lock(JavaThread::current()), "possible deadlock"); |
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1562 return !BackgroundCompilation; |
0 | 1563 } |
1564 | |
1565 | |
1566 // ------------------------------------------------------------------ | |
1567 // CompileBroker::preload_classes | |
1568 void CompileBroker::preload_classes(methodHandle method, TRAPS) { | |
1569 // Move this code over from c1_Compiler.cpp | |
1570 ShouldNotReachHere(); | |
1571 } | |
1572 | |
1573 | |
1574 // ------------------------------------------------------------------ | |
1575 // CompileBroker::create_compile_task | |
1576 // | |
1577 // Create a CompileTask object representing the current request for | |
1578 // compilation. Add this task to the queue. | |
1579 CompileTask* CompileBroker::create_compile_task(CompileQueue* queue, | |
1580 int compile_id, | |
1581 methodHandle method, | |
1582 int osr_bci, | |
1583 int comp_level, | |
1584 methodHandle hot_method, | |
1585 int hot_count, | |
1586 const char* comment, | |
1587 bool blocking) { | |
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1588 CompileTask* new_task = CompileTask::allocate(); |
0 | 1589 new_task->initialize(compile_id, method, osr_bci, comp_level, |
1590 hot_method, hot_count, comment, | |
1591 blocking); | |
1592 queue->add(new_task); | |
1593 return new_task; | |
1594 } | |
1595 | |
1596 | |
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1597 /** |
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1598 * Wait for the compilation task to complete. |
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1599 */ |
0 | 1600 void CompileBroker::wait_for_completion(CompileTask* task) { |
1601 if (CIPrintCompileQueue) { | |
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1602 ttyLocker ttyl; |
0 | 1603 tty->print_cr("BLOCKING FOR COMPILE"); |
1604 } | |
1605 | |
1606 assert(task->is_blocking(), "can only wait on blocking task"); | |
1607 | |
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1608 JavaThread* thread = JavaThread::current(); |
0 | 1609 thread->set_blocked_on_compilation(true); |
1610 | |
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1611 methodHandle method(thread, task->method()); |
0 | 1612 { |
1613 MutexLocker waiter(task->lock(), thread); | |
1614 | |
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1615 while (!task->is_complete() && !is_compilation_disabled_forever()) { |
0 | 1616 task->lock()->wait(); |
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1617 } |
0 | 1618 } |
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1619 |
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1620 thread->set_blocked_on_compilation(false); |
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1621 if (is_compilation_disabled_forever()) { |
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1622 CompileTask::free(task); |
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1623 return; |
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|
1624 } |
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1625 |
0 | 1626 // It is harmless to check this status without the lock, because |
1627 // completion is a stable property (until the task object is recycled). | |
1628 assert(task->is_complete(), "Compilation should have completed"); | |
1629 assert(task->code_handle() == NULL, "must be reset"); | |
1630 | |
1631 // By convention, the waiter is responsible for recycling a | |
1632 // blocking CompileTask. Since there is only one waiter ever | |
1633 // waiting on a CompileTask, we know that no one else will | |
1634 // be using this CompileTask; we can free it. | |
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1635 CompileTask::free(task); |
0 | 1636 } |
1637 | |
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1638 /** |
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1639 * Initialize compiler thread(s) + compiler object(s). The postcondition |
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1640 * of this function is that the compiler runtimes are initialized and that |
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1641 * compiler threads can start compiling. |
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1642 */ |
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1643 bool CompileBroker::init_compiler_runtime() { |
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1644 CompilerThread* thread = CompilerThread::current(); |
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1645 AbstractCompiler* comp = thread->compiler(); |
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1646 // Final sanity check - the compiler object must exist |
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|
1647 guarantee(comp != NULL, "Compiler object must exist"); |
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|
1648 |
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|
1649 int system_dictionary_modification_counter; |
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1650 { |
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|
1651 MutexLocker locker(Compile_lock, thread); |
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1652 system_dictionary_modification_counter = SystemDictionary::number_of_modifications(); |
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|
1653 } |
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|
1654 |
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|
1655 { |
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|
1656 // Must switch to native to allocate ci_env |
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|
1657 ThreadToNativeFromVM ttn(thread); |
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|
1658 ciEnv ci_env(NULL, system_dictionary_modification_counter); |
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|
1659 // Cache Jvmti state |
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|
1660 ci_env.cache_jvmti_state(); |
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|
1661 // Cache DTrace flags |
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|
1662 ci_env.cache_dtrace_flags(); |
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|
1663 |
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|
1664 // Switch back to VM state to do compiler initialization |
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1665 ThreadInVMfromNative tv(thread); |
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|
1666 ResetNoHandleMark rnhm; |
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|
1667 |
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|
1668 |
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1669 if (!comp->is_shark()) { |
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|
1670 // Perform per-thread and global initializations |
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|
1671 comp->initialize(); |
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|
1672 } |
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|
1673 } |
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|
1674 |
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|
1675 if (comp->is_failed()) { |
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|
1676 disable_compilation_forever(); |
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1677 // If compiler initialization failed, no compiler thread that is specific to a |
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1678 // particular compiler runtime will ever start to compile methods. |
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|
1679 shutdown_compiler_runtime(comp, thread); |
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1680 return false; |
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|
1681 } |
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|
1682 |
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|
1683 // C1 specific check |
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1684 if (comp->is_c1() && (thread->get_buffer_blob() == NULL)) { |
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1685 warning("Initialization of %s thread failed (no space to run compilers)", thread->name()); |
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1686 return false; |
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|
1687 } |
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|
1688 |
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|
1689 return true; |
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|
1690 } |
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|
1691 |
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|
1692 /** |
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1693 * If C1 and/or C2 initialization failed, we shut down all compilation. |
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1694 * We do this to keep things simple. This can be changed if it ever turns |
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1695 * out to be a problem. |
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|
1696 */ |
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1697 void CompileBroker::shutdown_compiler_runtime(AbstractCompiler* comp, CompilerThread* thread) { |
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1698 // Free buffer blob, if allocated |
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1699 if (thread->get_buffer_blob() != NULL) { |
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1700 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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1701 CodeCache::free(thread->get_buffer_blob()); |
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|
1702 } |
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|
1703 |
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1704 if (comp->should_perform_shutdown()) { |
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|
1705 // There are two reasons for shutting down the compiler |
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|
1706 // 1) compiler runtime initialization failed |
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|
1707 // 2) The code cache is full and the following flag is set: -XX:-UseCodeCacheFlushing |
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1708 warning("%s initialization failed. Shutting down all compilers", comp->name()); |
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1709 |
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1710 // Only one thread per compiler runtime object enters here |
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1711 // Set state to shut down |
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1712 comp->set_shut_down(); |
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1713 |
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1714 // Delete all queued compilation tasks to make compiler threads exit faster. |
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1715 if (_c1_compile_queue != NULL) { |
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1716 _c1_compile_queue->free_all(); |
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1717 } |
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1718 |
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1719 if (_c2_compile_queue != NULL) { |
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1720 _c2_compile_queue->free_all(); |
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1721 } |
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1722 |
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1723 // Set flags so that we continue execution with using interpreter only. |
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1724 UseCompiler = false; |
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1725 UseInterpreter = true; |
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1726 |
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1727 // We could delete compiler runtimes also. However, there are references to |
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1728 // the compiler runtime(s) (e.g., nmethod::is_compiled_by_c1()) which then |
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1729 // fail. This can be done later if necessary. |
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1730 } |
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1731 } |
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1732 |
0 | 1733 // ------------------------------------------------------------------ |
1734 // CompileBroker::compiler_thread_loop | |
1735 // | |
1736 // The main loop run by a CompilerThread. | |
1737 void CompileBroker::compiler_thread_loop() { | |
1738 CompilerThread* thread = CompilerThread::current(); | |
1739 CompileQueue* queue = thread->queue(); | |
1740 // For the thread that initializes the ciObjectFactory | |
1741 // this resource mark holds all the shared objects | |
1742 ResourceMark rm; | |
1743 | |
1744 // First thread to get here will initialize the compiler interface | |
1745 | |
1746 if (!ciObjectFactory::is_initialized()) { | |
1747 ASSERT_IN_VM; | |
1748 MutexLocker only_one (CompileThread_lock, thread); | |
1749 if (!ciObjectFactory::is_initialized()) { | |
1750 ciObjectFactory::initialize(); | |
1751 } | |
1752 } | |
1753 | |
1754 // Open a log. | |
1755 if (LogCompilation) { | |
1756 init_compiler_thread_log(); | |
1757 } | |
1758 CompileLog* log = thread->log(); | |
1759 if (log != NULL) { | |
6843 | 1760 log->begin_elem("start_compile_thread name='%s' thread='" UINTX_FORMAT "' process='%d'", |
1761 thread->name(), | |
0 | 1762 os::current_thread_id(), |
1763 os::current_process_id()); | |
1764 log->stamp(); | |
1765 log->end_elem(); | |
1766 } | |
1767 | |
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1768 // If compiler thread/runtime initialization fails, exit the compiler thread |
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1769 if (!init_compiler_runtime()) { |
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1770 return; |
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1771 } |
1202 | 1772 |
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1773 // Poll for new compilation tasks as long as the JVM runs. Compilation |
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1774 // should only be disabled if something went wrong while initializing the |
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1775 // compiler runtimes. This, in turn, should not happen. The only known case |
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1776 // when compiler runtime initialization fails is if there is not enough free |
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1777 // space in the code cache to generate the necessary stubs, etc. |
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1778 while (!is_compilation_disabled_forever()) { |
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1779 // We need this HandleMark to avoid leaking VM handles. |
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1780 HandleMark hm(thread); |
0 | 1781 |
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1782 if (CodeCache::unallocated_capacity() < CodeCacheMinimumFreeSpace) { |
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1783 // the code cache is really full |
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1784 handle_full_code_cache(); |
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1785 } |
0 | 1786 |
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1787 CompileTask* task = queue->get(); |
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1788 if (task == NULL) { |
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1789 continue; |
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1790 } |
0 | 1791 |
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1792 // Give compiler threads an extra quanta. They tend to be bursty and |
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1793 // this helps the compiler to finish up the job. |
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1794 if( CompilerThreadHintNoPreempt ) |
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1795 os::hint_no_preempt(); |
0 | 1796 |
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1797 // trace per thread time and compile statistics |
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1798 CompilerCounters* counters = ((CompilerThread*)thread)->counters(); |
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1799 PerfTraceTimedEvent(counters->time_counter(), counters->compile_counter()); |
0 | 1800 |
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1801 // Assign the task to the current thread. Mark this compilation |
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1802 // thread as active for the profiler. |
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1803 CompileTaskWrapper ctw(task); |
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1804 nmethodLocker result_handle; // (handle for the nmethod produced by this task) |
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1805 task->set_code_handle(&result_handle); |
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1806 methodHandle method(thread, task->method()); |
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1807 |
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1808 // Never compile a method if breakpoints are present in it |
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1809 if (method()->number_of_breakpoints() == 0) { |
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1810 // Compile the method. |
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1811 if ((UseCompiler || AlwaysCompileLoopMethods) && CompileBroker::should_compile_new_jobs()) { |
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1812 invoke_compiler_on_method(task); |
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1813 } else { |
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1814 // After compilation is disabled, remove remaining methods from queue |
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1815 method->clear_queued_for_compilation(); |
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1816 task->set_failure_reason("compilation is disabled"); |
0 | 1817 } |
1818 } | |
1819 } | |
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1820 |
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1821 // Shut down compiler runtime |
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1822 shutdown_compiler_runtime(thread->compiler(), thread); |
0 | 1823 } |
1824 | |
1825 // ------------------------------------------------------------------ | |
1826 // CompileBroker::init_compiler_thread_log | |
1827 // | |
1828 // Set up state required by +LogCompilation. | |
1829 void CompileBroker::init_compiler_thread_log() { | |
1830 CompilerThread* thread = CompilerThread::current(); | |
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1831 char file_name[4*K]; |
0 | 1832 FILE* fp = NULL; |
1833 intx thread_id = os::current_thread_id(); | |
1834 for (int try_temp_dir = 1; try_temp_dir >= 0; try_temp_dir--) { | |
1835 const char* dir = (try_temp_dir ? os::get_temp_directory() : NULL); | |
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1836 if (dir == NULL) { |
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1837 jio_snprintf(file_name, sizeof(file_name), "hs_c" UINTX_FORMAT "_pid%u.log", |
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1838 thread_id, os::current_process_id()); |
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1839 } else { |
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1840 jio_snprintf(file_name, sizeof(file_name), |
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1841 "%s%shs_c" UINTX_FORMAT "_pid%u.log", dir, |
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1842 os::file_separator(), thread_id, os::current_process_id()); |
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1843 } |
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1844 |
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1845 fp = fopen(file_name, "at"); |
0 | 1846 if (fp != NULL) { |
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1847 if (LogCompilation && Verbose) { |
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1848 tty->print_cr("Opening compilation log %s", file_name); |
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1849 } |
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1850 CompileLog* log = new(ResourceObj::C_HEAP, mtCompiler) CompileLog(file_name, fp, thread_id); |
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1851 thread->init_log(log); |
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1852 |
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1853 if (xtty != NULL) { |
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1854 ttyLocker ttyl; |
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1855 // Record any per thread log files |
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1856 xtty->elem("thread_logfile thread='" INTX_FORMAT "' filename='%s'", thread_id, file_name); |
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1857 } |
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1858 return; |
0 | 1859 } |
1860 } | |
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1861 warning("Cannot open log file: %s", file_name); |
0 | 1862 } |
1863 | |
1864 // ------------------------------------------------------------------ | |
1865 // CompileBroker::set_should_block | |
1866 // | |
1867 // Set _should_block. | |
1868 // Call this from the VM, with Threads_lock held and a safepoint requested. | |
1869 void CompileBroker::set_should_block() { | |
1870 assert(Threads_lock->owner() == Thread::current(), "must have threads lock"); | |
1871 assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint already"); | |
1872 #ifndef PRODUCT | |
1873 if (PrintCompilation && (Verbose || WizardMode)) | |
1874 tty->print_cr("notifying compiler thread pool to block"); | |
1875 #endif | |
1876 _should_block = true; | |
1877 } | |
1878 | |
1879 // ------------------------------------------------------------------ | |
1880 // CompileBroker::maybe_block | |
1881 // | |
1882 // Call this from the compiler at convenient points, to poll for _should_block. | |
1883 void CompileBroker::maybe_block() { | |
1884 if (_should_block) { | |
1885 #ifndef PRODUCT | |
1886 if (PrintCompilation && (Verbose || WizardMode)) | |
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1887 tty->print_cr("compiler thread " INTPTR_FORMAT " poll detects block request", p2i(Thread::current())); |
0 | 1888 #endif |
1889 ThreadInVMfromNative tivfn(JavaThread::current()); | |
1890 } | |
1891 } | |
1892 | |
7595
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1893 // wrapper for CodeCache::print_summary() |
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1894 static void codecache_print(bool detailed) |
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1895 { |
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1896 ResourceMark rm; |
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1897 stringStream s; |
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1898 // Dump code cache into a buffer before locking the tty, |
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1899 { |
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1900 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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1901 CodeCache::print_summary(&s, detailed); |
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1902 } |
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1903 ttyLocker ttyl; |
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1904 tty->print("%s", s.as_string()); |
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1905 } |
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1906 |
0 | 1907 // ------------------------------------------------------------------ |
1908 // CompileBroker::invoke_compiler_on_method | |
1909 // | |
1910 // Compile a method. | |
1911 // | |
1912 void CompileBroker::invoke_compiler_on_method(CompileTask* task) { | |
1913 if (PrintCompilation) { | |
1914 ResourceMark rm; | |
1915 task->print_line(); | |
1916 } | |
1917 elapsedTimer time; | |
1918 | |
1919 CompilerThread* thread = CompilerThread::current(); | |
1920 ResourceMark rm(thread); | |
1921 | |
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1922 if (LogEvents) { |
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1923 _compilation_log->log_compile(thread, task); |
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1924 } |
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1925 |
0 | 1926 // Common flags. |
1927 uint compile_id = task->compile_id(); | |
1928 int osr_bci = task->osr_bci(); | |
1929 bool is_osr = (osr_bci != standard_entry_bci); | |
1930 bool should_log = (thread->log() != NULL); | |
1931 bool should_break = false; | |
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1932 int task_level = task->comp_level(); |
0 | 1933 { |
1934 // create the handle inside it's own block so it can't | |
1935 // accidentally be referenced once the thread transitions to | |
1936 // native. The NoHandleMark before the transition should catch | |
1937 // any cases where this occurs in the future. | |
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1938 methodHandle method(thread, task->method()); |
0 | 1939 should_break = check_break_at(method, compile_id, is_osr); |
1940 if (should_log && !CompilerOracle::should_log(method)) { | |
1941 should_log = false; | |
1942 } | |
1943 assert(!method->is_native(), "no longer compile natives"); | |
1944 | |
1945 // Save information about this method in case of failure. | |
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1946 set_last_compile(thread, method, is_osr, task_level); |
0 | 1947 |
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1948 DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, compiler_name(task_level)); |
0 | 1949 } |
1950 | |
1951 // Allocate a new set of JNI handles. | |
1952 push_jni_handle_block(); | |
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1953 Method* target_handle = task->method(); |
0 | 1954 int compilable = ciEnv::MethodCompilable; |
1955 { | |
1956 int system_dictionary_modification_counter; | |
1957 { | |
1958 MutexLocker locker(Compile_lock, thread); | |
1959 system_dictionary_modification_counter = SystemDictionary::number_of_modifications(); | |
1960 } | |
1961 | |
1962 NoHandleMark nhm; | |
1963 ThreadToNativeFromVM ttn(thread); | |
1964 | |
1965 ciEnv ci_env(task, system_dictionary_modification_counter); | |
1966 if (should_break) { | |
1967 ci_env.set_break_at_compile(true); | |
1968 } | |
1969 if (should_log) { | |
1970 ci_env.set_log(thread->log()); | |
1971 } | |
1972 assert(thread->env() == &ci_env, "set by ci_env"); | |
1973 // The thread-env() field is cleared in ~CompileTaskWrapper. | |
1974 | |
780
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1975 // Cache Jvmti state |
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1976 ci_env.cache_jvmti_state(); |
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1977 |
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1978 // Cache DTrace flags |
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1979 ci_env.cache_dtrace_flags(); |
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1980 |
0 | 1981 ciMethod* target = ci_env.get_method_from_handle(target_handle); |
1982 | |
1983 TraceTime t1("compilation", &time); | |
10405 | 1984 EventCompilation event; |
0 | 1985 |
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1986 AbstractCompiler *comp = compiler(task_level); |
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1987 if (comp == NULL) { |
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1988 ci_env.record_method_not_compilable("no compiler", !TieredCompilation); |
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1989 } else { |
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1990 comp->compile_method(&ci_env, target, osr_bci); |
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1991 } |
0 | 1992 |
1993 if (!ci_env.failing() && task->code() == NULL) { | |
1994 //assert(false, "compiler should always document failure"); | |
1995 // The compiler elected, without comment, not to register a result. | |
1996 // Do not attempt further compilations of this method. | |
1964
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1997 ci_env.record_method_not_compilable("compile failed", !TieredCompilation); |
0 | 1998 } |
1999 | |
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2000 // Copy this bit to the enclosing block: |
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2001 compilable = ci_env.compilable(); |
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2002 |
0 | 2003 if (ci_env.failing()) { |
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2004 task->set_failure_reason(ci_env.failure_reason()); |
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2005 const char* retry_message = ci_env.retry_message(); |
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2006 if (_compilation_log != NULL) { |
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2007 _compilation_log->log_failure(thread, task, ci_env.failure_reason(), retry_message); |
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2008 } |
0 | 2009 if (PrintCompilation) { |
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2010 FormatBufferResource msg = retry_message != NULL ? |
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2011 err_msg_res("COMPILE SKIPPED: %s (%s)", ci_env.failure_reason(), retry_message) : |
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2012 err_msg_res("COMPILE SKIPPED: %s", ci_env.failure_reason()); |
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2013 task->print_compilation(tty, msg); |
0 | 2014 } |
2015 } else { | |
2016 task->mark_success(); | |
2017 task->set_num_inlined_bytecodes(ci_env.num_inlined_bytecodes()); | |
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2018 if (_compilation_log != NULL) { |
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2019 nmethod* code = task->code(); |
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2020 if (code != NULL) { |
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2021 _compilation_log->log_nmethod(thread, code); |
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2022 } |
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2023 } |
0 | 2024 } |
10197
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2025 // simulate crash during compilation |
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2026 assert(task->compile_id() != CICrashAt, "just as planned"); |
10405 | 2027 if (event.should_commit()) { |
2028 event.set_method(target->get_Method()); | |
2029 event.set_compileID(compile_id); | |
2030 event.set_compileLevel(task->comp_level()); | |
2031 event.set_succeded(task->is_success()); | |
2032 event.set_isOsr(is_osr); | |
2033 event.set_codeSize((task->code() == NULL) ? 0 : task->code()->total_size()); | |
2034 event.set_inlinedBytes(task->num_inlined_bytecodes()); | |
2035 event.commit(); | |
2036 } | |
0 | 2037 } |
2038 pop_jni_handle_block(); | |
2039 | |
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2040 methodHandle method(thread, task->method()); |
0 | 2041 |
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2042 DTRACE_METHOD_COMPILE_END_PROBE(method, compiler_name(task_level), task->is_success()); |
0 | 2043 |
2044 collect_statistics(thread, time, task); | |
2045 | |
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2046 if (PrintCompilation && PrintCompilation2) { |
4047 | 2047 tty->print("%7d ", (int) tty->time_stamp().milliseconds()); // print timestamp |
2048 tty->print("%4d ", compile_id); // print compilation number | |
2049 tty->print("%s ", (is_osr ? "%" : " ")); | |
10278 | 2050 if (task->code() != NULL) { |
2051 tty->print("size: %d(%d) ", task->code()->total_size(), task->code()->insts_size()); | |
2052 } | |
2053 tty->print_cr("time: %d inlined: %d bytes", (int)time.milliseconds(), task->num_inlined_bytecodes()); | |
4047 | 2054 } |
2055 | |
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2056 if (PrintCodeCacheOnCompilation) |
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2057 codecache_print(/* detailed= */ false); |
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2058 |
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2059 // Disable compilation, if required. |
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2060 switch (compilable) { |
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2061 case ciEnv::MethodCompilable_never: |
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2062 if (is_osr) |
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2063 method->set_not_osr_compilable_quietly(); |
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2064 else |
1208
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2065 method->set_not_compilable_quietly(); |
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2066 break; |
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2067 case ciEnv::MethodCompilable_not_at_tier: |
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2068 if (is_osr) |
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2069 method->set_not_osr_compilable_quietly(task_level); |
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2070 else |
8771
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2071 method->set_not_compilable_quietly(task_level); |
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2072 break; |
0 | 2073 } |
2074 | |
2075 // Note that the queued_for_compilation bits are cleared without | |
2076 // protection of a mutex. [They were set by the requester thread, | |
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2077 // when adding the task to the compile queue -- at which time the |
0 | 2078 // compile queue lock was held. Subsequently, we acquired the compile |
2079 // queue lock to get this task off the compile queue; thus (to belabour | |
2080 // the point somewhat) our clearing of the bits must be occurring | |
2081 // only after the setting of the bits. See also 14012000 above. | |
2082 method->clear_queued_for_compilation(); | |
2083 | |
2084 #ifdef ASSERT | |
2085 if (CollectedHeap::fired_fake_oom()) { | |
2086 // The current compile received a fake OOM during compilation so | |
2087 // go ahead and exit the VM since the test apparently succeeded | |
2088 tty->print_cr("*** Shutting down VM after successful fake OOM"); | |
2089 vm_exit(0); | |
2090 } | |
2091 #endif | |
2092 } | |
2093 | |
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2094 /** |
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2095 * The CodeCache is full. Print out warning and disable compilation |
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2096 * or try code cache cleaning so compilation can continue later. |
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2097 */ |
1202 | 2098 void CompileBroker::handle_full_code_cache() { |
2099 UseInterpreter = true; | |
2100 if (UseCompiler || AlwaysCompileLoopMethods ) { | |
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2101 if (xtty != NULL) { |
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2102 ResourceMark rm; |
2482
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2103 stringStream s; |
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2104 // Dump code cache state into a buffer before locking the tty, |
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2105 // because log_state() will use locks causing lock conflicts. |
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2106 CodeCache::log_state(&s); |
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2107 // Lock to prevent tearing |
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2108 ttyLocker ttyl; |
1728
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2109 xtty->begin_elem("code_cache_full"); |
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2110 xtty->print("%s", s.as_string()); |
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2111 xtty->stamp(); |
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2112 xtty->end_elem(); |
1202 | 2113 } |
10405 | 2114 |
2115 CodeCache::report_codemem_full(); | |
2116 | |
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2117 #ifndef PRODUCT |
1202 | 2118 if (CompileTheWorld || ExitOnFullCodeCache) { |
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2119 codecache_print(/* detailed= */ true); |
1202 | 2120 before_exit(JavaThread::current()); |
2121 exit_globals(); // will delete tty | |
2122 vm_direct_exit(CompileTheWorld ? 0 : 1); | |
2123 } | |
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2124 #endif |
1202 | 2125 if (UseCodeCacheFlushing) { |
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2126 // Since code cache is full, immediately stop new compiles |
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2127 if (CompileBroker::set_should_compile_new_jobs(CompileBroker::stop_compilation)) { |
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2128 NMethodSweeper::log_sweep("disable_compiler"); |
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2129 } |
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2130 // Switch to 'vm_state'. This ensures that possibly_sweep() can be called |
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2131 // without having to consider the state in which the current thread is. |
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2132 ThreadInVMfromUnknown in_vm; |
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2133 NMethodSweeper::possibly_sweep(); |
1202 | 2134 } else { |
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2135 disable_compilation_forever(); |
1202 | 2136 } |
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2137 |
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2138 // Print warning only once |
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2139 if (should_print_compiler_warning()) { |
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2140 warning("CodeCache is full. Compiler has been disabled."); |
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2141 warning("Try increasing the code cache size using -XX:ReservedCodeCacheSize="); |
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2142 codecache_print(/* detailed= */ true); |
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2143 } |
1202 | 2144 } |
2145 } | |
2146 | |
2147 // ------------------------------------------------------------------ | |
0 | 2148 // CompileBroker::set_last_compile |
2149 // | |
2150 // Record this compilation for debugging purposes. | |
2151 void CompileBroker::set_last_compile(CompilerThread* thread, methodHandle method, bool is_osr, int comp_level) { | |
2152 ResourceMark rm; | |
2153 char* method_name = method->name()->as_C_string(); | |
2154 strncpy(_last_method_compiled, method_name, CompileBroker::name_buffer_length); | |
17567 | 2155 _last_method_compiled[CompileBroker::name_buffer_length - 1] = '\0'; // ensure null terminated |
0 | 2156 char current_method[CompilerCounters::cmname_buffer_length]; |
2157 size_t maxLen = CompilerCounters::cmname_buffer_length; | |
2158 | |
2159 if (UsePerfData) { | |
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2160 const char* class_name = method->method_holder()->name()->as_C_string(); |
0 | 2161 |
2162 size_t s1len = strlen(class_name); | |
2163 size_t s2len = strlen(method_name); | |
2164 | |
2165 // check if we need to truncate the string | |
2166 if (s1len + s2len + 2 > maxLen) { | |
2167 | |
2168 // the strategy is to lop off the leading characters of the | |
2169 // class name and the trailing characters of the method name. | |
2170 | |
2171 if (s2len + 2 > maxLen) { | |
2172 // lop of the entire class name string, let snprintf handle | |
2173 // truncation of the method name. | |
2174 class_name += s1len; // null string | |
2175 } | |
2176 else { | |
2177 // lop off the extra characters from the front of the class name | |
2178 class_name += ((s1len + s2len + 2) - maxLen); | |
2179 } | |
2180 } | |
2181 | |
2182 jio_snprintf(current_method, maxLen, "%s %s", class_name, method_name); | |
2183 } | |
2184 | |
2185 if (CICountOSR && is_osr) { | |
2186 _last_compile_type = osr_compile; | |
2187 } else { | |
2188 _last_compile_type = normal_compile; | |
2189 } | |
2190 _last_compile_level = comp_level; | |
2191 | |
2192 if (UsePerfData) { | |
2193 CompilerCounters* counters = thread->counters(); | |
2194 counters->set_current_method(current_method); | |
2195 counters->set_compile_type((jlong)_last_compile_type); | |
2196 } | |
2197 } | |
2198 | |
2199 | |
2200 // ------------------------------------------------------------------ | |
2201 // CompileBroker::push_jni_handle_block | |
2202 // | |
2203 // Push on a new block of JNI handles. | |
2204 void CompileBroker::push_jni_handle_block() { | |
2205 JavaThread* thread = JavaThread::current(); | |
2206 | |
2207 // Allocate a new block for JNI handles. | |
2208 // Inlined code from jni_PushLocalFrame() | |
2209 JNIHandleBlock* java_handles = thread->active_handles(); | |
2210 JNIHandleBlock* compile_handles = JNIHandleBlock::allocate_block(thread); | |
2211 assert(compile_handles != NULL && java_handles != NULL, "should not be NULL"); | |
2212 compile_handles->set_pop_frame_link(java_handles); // make sure java handles get gc'd. | |
2213 thread->set_active_handles(compile_handles); | |
2214 } | |
2215 | |
2216 | |
2217 // ------------------------------------------------------------------ | |
2218 // CompileBroker::pop_jni_handle_block | |
2219 // | |
2220 // Pop off the current block of JNI handles. | |
2221 void CompileBroker::pop_jni_handle_block() { | |
2222 JavaThread* thread = JavaThread::current(); | |
2223 | |
2224 // Release our JNI handle block | |
2225 JNIHandleBlock* compile_handles = thread->active_handles(); | |
2226 JNIHandleBlock* java_handles = compile_handles->pop_frame_link(); | |
2227 thread->set_active_handles(java_handles); | |
2228 compile_handles->set_pop_frame_link(NULL); | |
2229 JNIHandleBlock::release_block(compile_handles, thread); // may block | |
2230 } | |
2231 | |
2232 | |
2233 // ------------------------------------------------------------------ | |
2234 // CompileBroker::check_break_at | |
2235 // | |
2236 // Should the compilation break at the current compilation. | |
2237 bool CompileBroker::check_break_at(methodHandle method, int compile_id, bool is_osr) { | |
2238 if (CICountOSR && is_osr && (compile_id == CIBreakAtOSR)) { | |
2239 return true; | |
2240 } else if( CompilerOracle::should_break_at(method) ) { // break when compiling | |
2241 return true; | |
2242 } else { | |
2243 return (compile_id == CIBreakAt); | |
2244 } | |
2245 } | |
2246 | |
2247 // ------------------------------------------------------------------ | |
2248 // CompileBroker::collect_statistics | |
2249 // | |
2250 // Collect statistics about the compilation. | |
2251 | |
2252 void CompileBroker::collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task) { | |
2253 bool success = task->is_success(); | |
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2254 methodHandle method (thread, task->method()); |
0 | 2255 uint compile_id = task->compile_id(); |
2256 bool is_osr = (task->osr_bci() != standard_entry_bci); | |
2257 nmethod* code = task->code(); | |
2258 CompilerCounters* counters = thread->counters(); | |
2259 | |
2260 assert(code == NULL || code->is_locked_by_vm(), "will survive the MutexLocker"); | |
2261 MutexLocker locker(CompileStatistics_lock); | |
2262 | |
2263 // _perf variables are production performance counters which are | |
2264 // updated regardless of the setting of the CITime and CITimeEach flags | |
2265 // | |
2266 if (!success) { | |
2267 _total_bailout_count++; | |
2268 if (UsePerfData) { | |
2269 _perf_last_failed_method->set_value(counters->current_method()); | |
2270 _perf_last_failed_type->set_value(counters->compile_type()); | |
2271 _perf_total_bailout_count->inc(); | |
2272 } | |
2273 } else if (code == NULL) { | |
2274 if (UsePerfData) { | |
2275 _perf_last_invalidated_method->set_value(counters->current_method()); | |
2276 _perf_last_invalidated_type->set_value(counters->compile_type()); | |
2277 _perf_total_invalidated_count->inc(); | |
2278 } | |
2279 _total_invalidated_count++; | |
2280 } else { | |
2281 // Compilation succeeded | |
2282 | |
2283 // update compilation ticks - used by the implementation of | |
2284 // java.lang.management.CompilationMBean | |
2285 _perf_total_compilation->inc(time.ticks()); | |
2286 | |
10405 | 2287 _t_total_compilation.add(time); |
2288 _peak_compilation_time = time.milliseconds() > _peak_compilation_time ? time.milliseconds() : _peak_compilation_time; | |
2289 | |
0 | 2290 if (CITime) { |
2291 if (is_osr) { | |
2292 _t_osr_compilation.add(time); | |
2293 _sum_osr_bytes_compiled += method->code_size() + task->num_inlined_bytecodes(); | |
2294 } else { | |
2295 _t_standard_compilation.add(time); | |
2296 _sum_standard_bytes_compiled += method->code_size() + task->num_inlined_bytecodes(); | |
2297 } | |
2298 } | |
2299 | |
2300 if (UsePerfData) { | |
2301 // save the name of the last method compiled | |
2302 _perf_last_method->set_value(counters->current_method()); | |
2303 _perf_last_compile_type->set_value(counters->compile_type()); | |
2304 _perf_last_compile_size->set_value(method->code_size() + | |
2305 task->num_inlined_bytecodes()); | |
2306 if (is_osr) { | |
2307 _perf_osr_compilation->inc(time.ticks()); | |
2308 _perf_sum_osr_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes()); | |
2309 } else { | |
2310 _perf_standard_compilation->inc(time.ticks()); | |
2311 _perf_sum_standard_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes()); | |
2312 } | |
2313 } | |
2314 | |
2315 if (CITimeEach) { | |
2316 float bytes_per_sec = 1.0 * (method->code_size() + task->num_inlined_bytecodes()) / time.seconds(); | |
2317 tty->print_cr("%3d seconds: %f bytes/sec : %f (bytes %d + %d inlined)", | |
2318 compile_id, time.seconds(), bytes_per_sec, method->code_size(), task->num_inlined_bytecodes()); | |
2319 } | |
2320 | |
2321 // Collect counts of successful compilations | |
1748 | 2322 _sum_nmethod_size += code->total_size(); |
2323 _sum_nmethod_code_size += code->insts_size(); | |
0 | 2324 _total_compile_count++; |
2325 | |
2326 if (UsePerfData) { | |
1748 | 2327 _perf_sum_nmethod_size->inc( code->total_size()); |
2328 _perf_sum_nmethod_code_size->inc(code->insts_size()); | |
0 | 2329 _perf_total_compile_count->inc(); |
2330 } | |
2331 | |
2332 if (is_osr) { | |
2333 if (UsePerfData) _perf_total_osr_compile_count->inc(); | |
2334 _total_osr_compile_count++; | |
2335 } else { | |
2336 if (UsePerfData) _perf_total_standard_compile_count->inc(); | |
2337 _total_standard_compile_count++; | |
2338 } | |
2339 } | |
2340 // set the current method for the thread to null | |
2341 if (UsePerfData) counters->set_current_method(""); | |
2342 } | |
2343 | |
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2344 const char* CompileBroker::compiler_name(int comp_level) { |
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2345 AbstractCompiler *comp = CompileBroker::compiler(comp_level); |
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2346 if (comp == NULL) { |
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2347 return "no compiler"; |
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2348 } else { |
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2349 return (comp->name()); |
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2350 } |
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2351 } |
0 | 2352 |
2353 void CompileBroker::print_times() { | |
2354 tty->cr(); | |
2355 tty->print_cr("Accumulated compiler times (for compiled methods only)"); | |
2356 tty->print_cr("------------------------------------------------"); | |
2357 //0000000000111111111122222222223333333333444444444455555555556666666666 | |
2358 //0123456789012345678901234567890123456789012345678901234567890123456789 | |
2359 tty->print_cr(" Total compilation time : %6.3f s", CompileBroker::_t_total_compilation.seconds()); | |
2360 tty->print_cr(" Standard compilation : %6.3f s, Average : %2.3f", | |
2361 CompileBroker::_t_standard_compilation.seconds(), | |
2362 CompileBroker::_t_standard_compilation.seconds() / CompileBroker::_total_standard_compile_count); | |
2363 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 | 2364 |
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2365 AbstractCompiler *comp = compiler(CompLevel_simple); |
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2366 if (comp != NULL) { |
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2367 comp->print_timers(); |
0 | 2368 } |
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2369 comp = compiler(CompLevel_full_optimization); |
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2370 if (comp != NULL) { |
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2371 comp->print_timers(); |
1783 | 2372 } |
0 | 2373 tty->cr(); |
8860 | 2374 tty->print_cr(" Total compiled methods : %6d methods", CompileBroker::_total_compile_count); |
2375 tty->print_cr(" Standard compilation : %6d methods", CompileBroker::_total_standard_compile_count); | |
2376 tty->print_cr(" On stack replacement : %6d methods", CompileBroker::_total_osr_compile_count); | |
0 | 2377 int tcb = CompileBroker::_sum_osr_bytes_compiled + CompileBroker::_sum_standard_bytes_compiled; |
2378 tty->print_cr(" Total compiled bytecodes : %6d bytes", tcb); | |
2379 tty->print_cr(" Standard compilation : %6d bytes", CompileBroker::_sum_standard_bytes_compiled); | |
2380 tty->print_cr(" On stack replacement : %6d bytes", CompileBroker::_sum_osr_bytes_compiled); | |
2381 int bps = (int)(tcb / CompileBroker::_t_total_compilation.seconds()); | |
2382 tty->print_cr(" Average compilation speed: %6d bytes/s", bps); | |
2383 tty->cr(); | |
2384 tty->print_cr(" nmethod code size : %6d bytes", CompileBroker::_sum_nmethod_code_size); | |
2385 tty->print_cr(" nmethod total size : %6d bytes", CompileBroker::_sum_nmethod_size); | |
2386 } | |
2387 | |
2388 // Debugging output for failure | |
2389 void CompileBroker::print_last_compile() { | |
2390 if ( _last_compile_level != CompLevel_none && | |
2391 compiler(_last_compile_level) != NULL && | |
2392 _last_method_compiled != NULL && | |
2393 _last_compile_type != no_compile) { | |
2394 if (_last_compile_type == osr_compile) { | |
2395 tty->print_cr("Last parse: [osr]%d+++(%d) %s", | |
2396 _osr_compilation_id, _last_compile_level, _last_method_compiled); | |
2397 } else { | |
2398 tty->print_cr("Last parse: %d+++(%d) %s", | |
2399 _compilation_id, _last_compile_level, _last_method_compiled); | |
2400 } | |
2401 } | |
2402 } | |
2403 | |
2404 | |
2405 void CompileBroker::print_compiler_threads_on(outputStream* st) { | |
2406 #ifndef PRODUCT | |
2407 st->print_cr("Compiler thread printing unimplemented."); | |
2408 st->cr(); | |
2409 #endif | |
2410 } |