Mercurial > hg > graal-jvmci-8
annotate src/share/vm/compiler/compileBroker.cpp @ 20489:966205f0e717
8058564: Tiered compilation performance drop in PIT
Summary: Ensure MethodCounters are created before method is enqueued for compilation
Reviewed-by: kvn, drchase, jiangli, roland
author | iveresov |
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date | Fri, 19 Sep 2014 11:53:58 -0700 |
parents | dd89808e49ba |
children | b9c94af14fd0 |
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 | |
186 CompileQueue* CompileBroker::_c2_method_queue = NULL; | |
187 CompileQueue* CompileBroker::_c1_method_queue = NULL; | |
188 CompileTask* CompileBroker::_task_free_list = NULL; | |
0 | 189 |
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190 GrowableArray<CompilerThread*>* CompileBroker::_compiler_threads = NULL; |
0 | 191 |
192 | |
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193 class CompilationLog : public StringEventLog { |
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194 public: |
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195 CompilationLog() : StringEventLog("Compilation events") { |
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196 } |
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197 |
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198 void log_compile(JavaThread* thread, CompileTask* task) { |
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199 StringLogMessage lm; |
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200 stringStream sstr = lm.stream(); |
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201 // msg.time_stamp().update_to(tty->time_stamp().ticks()); |
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202 task->print_compilation(&sstr, NULL, true); |
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203 log(thread, "%s", (const char*)lm); |
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204 } |
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205 |
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206 void log_nmethod(JavaThread* thread, nmethod* nm) { |
4944 | 207 log(thread, "nmethod %d%s " INTPTR_FORMAT " code ["INTPTR_FORMAT ", " INTPTR_FORMAT "]", |
208 nm->compile_id(), nm->is_osr_method() ? "%" : "", | |
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209 p2i(nm), p2i(nm->code_begin()), p2i(nm->code_end())); |
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210 } |
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211 |
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212 void log_failure(JavaThread* thread, CompileTask* task, const char* reason, const char* retry_message) { |
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213 StringLogMessage lm; |
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214 lm.print("%4d COMPILE SKIPPED: %s", task->compile_id(), reason); |
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215 if (retry_message != NULL) { |
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216 lm.append(" (%s)", retry_message); |
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217 } |
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218 lm.print("\n"); |
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219 log(thread, "%s", (const char*)lm); |
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220 } |
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221 }; |
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222 |
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223 static CompilationLog* _compilation_log = NULL; |
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224 |
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225 void compileBroker_init() { |
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226 if (LogEvents) { |
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227 _compilation_log = new CompilationLog(); |
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228 } |
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229 } |
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230 |
0 | 231 CompileTaskWrapper::CompileTaskWrapper(CompileTask* task) { |
232 CompilerThread* thread = CompilerThread::current(); | |
233 thread->set_task(task); | |
234 CompileLog* log = thread->log(); | |
235 if (log != NULL) task->log_task_start(log); | |
236 } | |
237 | |
238 CompileTaskWrapper::~CompileTaskWrapper() { | |
239 CompilerThread* thread = CompilerThread::current(); | |
240 CompileTask* task = thread->task(); | |
241 CompileLog* log = thread->log(); | |
242 if (log != NULL) task->log_task_done(log); | |
243 thread->set_task(NULL); | |
244 task->set_code_handle(NULL); | |
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245 thread->set_env(NULL); |
0 | 246 if (task->is_blocking()) { |
247 MutexLocker notifier(task->lock(), thread); | |
248 task->mark_complete(); | |
249 // Notify the waiting thread that the compilation has completed. | |
250 task->lock()->notify_all(); | |
251 } else { | |
252 task->mark_complete(); | |
253 | |
254 // By convention, the compiling thread is responsible for | |
255 // recycling a non-blocking CompileTask. | |
256 CompileBroker::free_task(task); | |
257 } | |
258 } | |
259 | |
260 | |
261 // ------------------------------------------------------------------ | |
262 // CompileTask::initialize | |
263 void CompileTask::initialize(int compile_id, | |
264 methodHandle method, | |
265 int osr_bci, | |
266 int comp_level, | |
267 methodHandle hot_method, | |
268 int hot_count, | |
269 const char* comment, | |
270 bool is_blocking) { | |
271 assert(!_lock->is_locked(), "bad locking"); | |
272 | |
273 _compile_id = compile_id; | |
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274 _method = method(); |
7409 | 275 _method_holder = JNIHandles::make_global(method->method_holder()->klass_holder()); |
0 | 276 _osr_bci = osr_bci; |
277 _is_blocking = is_blocking; | |
278 _comp_level = comp_level; | |
279 _num_inlined_bytecodes = 0; | |
280 | |
281 _is_complete = false; | |
282 _is_success = false; | |
283 _code_handle = NULL; | |
284 | |
285 _hot_method = NULL; | |
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286 _hot_method_holder = NULL; |
0 | 287 _hot_count = hot_count; |
288 _time_queued = 0; // tidy | |
289 _comment = comment; | |
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290 _failure_reason = NULL; |
0 | 291 |
292 if (LogCompilation) { | |
293 _time_queued = os::elapsed_counter(); | |
294 if (hot_method.not_null()) { | |
295 if (hot_method == method) { | |
296 _hot_method = _method; | |
297 } else { | |
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298 _hot_method = hot_method(); |
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299 // only add loader or mirror if different from _method_holder |
7409 | 300 _hot_method_holder = JNIHandles::make_global(hot_method->method_holder()->klass_holder()); |
0 | 301 } |
302 } | |
303 } | |
304 | |
305 _next = NULL; | |
306 } | |
307 | |
308 // ------------------------------------------------------------------ | |
309 // CompileTask::code/set_code | |
310 nmethod* CompileTask::code() const { | |
311 if (_code_handle == NULL) return NULL; | |
312 return _code_handle->code(); | |
313 } | |
314 void CompileTask::set_code(nmethod* nm) { | |
315 if (_code_handle == NULL && nm == NULL) return; | |
316 guarantee(_code_handle != NULL, ""); | |
317 _code_handle->set_code(nm); | |
318 if (nm == NULL) _code_handle = NULL; // drop the handle also | |
319 } | |
320 | |
321 // ------------------------------------------------------------------ | |
322 // CompileTask::free | |
323 void CompileTask::free() { | |
324 set_code(NULL); | |
325 assert(!_lock->is_locked(), "Should not be locked when freed"); | |
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326 JNIHandles::destroy_global(_method_holder); |
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327 JNIHandles::destroy_global(_hot_method_holder); |
0 | 328 } |
329 | |
330 | |
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331 void CompileTask::mark_on_stack() { |
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332 // Mark these methods as something redefine classes cannot remove. |
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333 _method->set_on_stack(true); |
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334 if (_hot_method != NULL) { |
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335 _hot_method->set_on_stack(true); |
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336 } |
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337 } |
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338 |
0 | 339 // ------------------------------------------------------------------ |
340 // CompileTask::print | |
341 void CompileTask::print() { | |
342 tty->print("<CompileTask compile_id=%d ", _compile_id); | |
343 tty->print("method="); | |
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344 _method->print_name(tty); |
0 | 345 tty->print_cr(" osr_bci=%d is_blocking=%s is_complete=%s is_success=%s>", |
346 _osr_bci, bool_to_str(_is_blocking), | |
347 bool_to_str(_is_complete), bool_to_str(_is_success)); | |
348 } | |
349 | |
1783 | 350 |
0 | 351 // ------------------------------------------------------------------ |
352 // CompileTask::print_line_on_error | |
353 // | |
354 // This function is called by fatal error handler when the thread | |
355 // causing troubles is a compiler thread. | |
356 // | |
357 // Do not grab any lock, do not allocate memory. | |
358 // | |
359 // Otherwise it's the same as CompileTask::print_line() | |
360 // | |
361 void CompileTask::print_line_on_error(outputStream* st, char* buf, int buflen) { | |
362 // print compiler name | |
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363 st->print("%s:", CompileBroker::compiler_name(comp_level())); |
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364 print_compilation(st); |
0 | 365 } |
366 | |
367 // ------------------------------------------------------------------ | |
368 // CompileTask::print_line | |
369 void CompileTask::print_line() { | |
370 ttyLocker ttyl; // keep the following output all in one block | |
371 // print compiler name if requested | |
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372 if (CIPrintCompilerName) tty->print("%s:", CompileBroker::compiler_name(comp_level())); |
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373 print_compilation(); |
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374 } |
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375 |
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376 |
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377 // ------------------------------------------------------------------ |
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378 // CompileTask::print_compilation_impl |
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379 void CompileTask::print_compilation_impl(outputStream* st, Method* method, int compile_id, int comp_level, |
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380 bool is_osr_method, int osr_bci, bool is_blocking, |
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381 const char* msg, bool short_form) { |
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382 if (!short_form) { |
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383 st->print("%7d ", (int) st->time_stamp().milliseconds()); // print timestamp |
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384 } |
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385 st->print("%4d ", compile_id); // print compilation number |
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386 |
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387 // For unloaded methods the transition to zombie occurs after the |
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388 // method is cleared so it's impossible to report accurate |
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389 // information for that case. |
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390 bool is_synchronized = false; |
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391 bool has_exception_handler = false; |
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392 bool is_native = false; |
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393 if (method != NULL) { |
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394 is_synchronized = method->is_synchronized(); |
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395 has_exception_handler = method->has_exception_handler(); |
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396 is_native = method->is_native(); |
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397 } |
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398 // method attributes |
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399 const char compile_type = is_osr_method ? '%' : ' '; |
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400 const char sync_char = is_synchronized ? 's' : ' '; |
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401 const char exception_char = has_exception_handler ? '!' : ' '; |
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402 const char blocking_char = is_blocking ? 'b' : ' '; |
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403 const char native_char = is_native ? 'n' : ' '; |
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404 |
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405 // print method attributes |
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406 st->print("%c%c%c%c%c ", compile_type, sync_char, exception_char, blocking_char, native_char); |
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407 |
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408 if (TieredCompilation) { |
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409 if (comp_level != -1) st->print("%d ", comp_level); |
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410 else st->print("- "); |
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411 } |
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412 st->print(" "); // more indent |
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413 |
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414 if (method == NULL) { |
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415 st->print("(method)"); |
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416 } else { |
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417 method->print_short_name(st); |
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418 if (is_osr_method) { |
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419 st->print(" @ %d", osr_bci); |
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420 } |
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421 if (method->is_native()) |
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422 st->print(" (native)"); |
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423 else |
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424 st->print(" (%d bytes)", method->code_size()); |
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425 } |
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426 |
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427 if (msg != NULL) { |
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428 st->print(" %s", msg); |
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429 } |
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430 if (!short_form) { |
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431 st->cr(); |
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432 } |
0 | 433 } |
434 | |
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435 // ------------------------------------------------------------------ |
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436 // CompileTask::print_inlining |
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437 void CompileTask::print_inlining(outputStream* st, ciMethod* method, int inline_level, int bci, const char* msg) { |
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438 // 1234567 |
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439 st->print(" "); // print timestamp |
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440 // 1234 |
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441 st->print(" "); // print compilation number |
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442 |
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443 // method attributes |
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444 if (method->is_loaded()) { |
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445 const char sync_char = method->is_synchronized() ? 's' : ' '; |
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446 const char exception_char = method->has_exception_handlers() ? '!' : ' '; |
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447 const char monitors_char = method->has_monitor_bytecodes() ? 'm' : ' '; |
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448 |
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449 // print method attributes |
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450 st->print(" %c%c%c ", sync_char, exception_char, monitors_char); |
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451 } else { |
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452 // %s!bn |
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453 st->print(" "); // print method attributes |
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454 } |
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455 |
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456 if (TieredCompilation) { |
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457 st->print(" "); |
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458 } |
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459 st->print(" "); // more indent |
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460 st->print(" "); // initial inlining indent |
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461 |
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462 for (int i = 0; i < inline_level; i++) st->print(" "); |
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463 |
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464 st->print("@ %d ", bci); // print bci |
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465 method->print_short_name(st); |
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466 if (method->is_loaded()) |
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467 st->print(" (%d bytes)", method->code_size()); |
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468 else |
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469 st->print(" (not loaded)"); |
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470 |
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471 if (msg != NULL) { |
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472 st->print(" %s", msg); |
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473 } |
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474 st->cr(); |
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475 } |
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476 |
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477 // ------------------------------------------------------------------ |
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478 // CompileTask::print_inline_indent |
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479 void CompileTask::print_inline_indent(int inline_level, outputStream* st) { |
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480 // 1234567 |
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481 st->print(" "); // print timestamp |
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482 // 1234 |
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483 st->print(" "); // print compilation number |
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484 // %s!bn |
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485 st->print(" "); // print method attributes |
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486 if (TieredCompilation) { |
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487 st->print(" "); |
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488 } |
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489 st->print(" "); // more indent |
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490 st->print(" "); // initial inlining indent |
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491 for (int i = 0; i < inline_level; i++) st->print(" "); |
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492 } |
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493 |
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494 // ------------------------------------------------------------------ |
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495 // CompileTask::print_compilation |
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496 void CompileTask::print_compilation(outputStream* st, const char* msg, bool short_form) { |
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497 bool is_osr_method = osr_bci() != InvocationEntryBci; |
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498 print_compilation_impl(st, method(), compile_id(), comp_level(), is_osr_method, osr_bci(), is_blocking(), msg, short_form); |
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499 } |
0 | 500 |
501 // ------------------------------------------------------------------ | |
502 // CompileTask::log_task | |
503 void CompileTask::log_task(xmlStream* log) { | |
504 Thread* thread = Thread::current(); | |
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505 methodHandle method(thread, this->method()); |
0 | 506 ResourceMark rm(thread); |
507 | |
508 // <task id='9' method='M' osr_bci='X' level='1' blocking='1' stamp='1.234'> | |
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509 log->print(" compile_id='%d'", _compile_id); |
0 | 510 if (_osr_bci != CompileBroker::standard_entry_bci) { |
511 log->print(" compile_kind='osr'"); // same as nmethod::compile_kind | |
512 } // else compile_kind='c2c' | |
513 if (!method.is_null()) log->method(method); | |
514 if (_osr_bci != CompileBroker::standard_entry_bci) { | |
515 log->print(" osr_bci='%d'", _osr_bci); | |
516 } | |
517 if (_comp_level != CompLevel_highest_tier) { | |
518 log->print(" level='%d'", _comp_level); | |
519 } | |
520 if (_is_blocking) { | |
521 log->print(" blocking='1'"); | |
522 } | |
523 log->stamp(); | |
524 } | |
525 | |
526 | |
527 // ------------------------------------------------------------------ | |
528 // CompileTask::log_task_queued | |
529 void CompileTask::log_task_queued() { | |
530 Thread* thread = Thread::current(); | |
531 ttyLocker ttyl; | |
532 ResourceMark rm(thread); | |
533 | |
534 xtty->begin_elem("task_queued"); | |
535 log_task(xtty); | |
536 if (_comment != NULL) { | |
537 xtty->print(" comment='%s'", _comment); | |
538 } | |
539 if (_hot_method != NULL) { | |
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540 methodHandle hot(thread, _hot_method); |
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541 methodHandle method(thread, _method); |
0 | 542 if (hot() != method()) { |
543 xtty->method(hot); | |
544 } | |
545 } | |
546 if (_hot_count != 0) { | |
547 xtty->print(" hot_count='%d'", _hot_count); | |
548 } | |
549 xtty->end_elem(); | |
550 } | |
551 | |
552 | |
553 // ------------------------------------------------------------------ | |
554 // CompileTask::log_task_start | |
555 void CompileTask::log_task_start(CompileLog* log) { | |
556 log->begin_head("task"); | |
557 log_task(log); | |
558 log->end_head(); | |
559 } | |
560 | |
561 | |
562 // ------------------------------------------------------------------ | |
563 // CompileTask::log_task_done | |
564 void CompileTask::log_task_done(CompileLog* log) { | |
565 Thread* thread = Thread::current(); | |
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566 methodHandle method(thread, this->method()); |
0 | 567 ResourceMark rm(thread); |
568 | |
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569 if (!_is_success) { |
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570 const char* reason = _failure_reason != NULL ? _failure_reason : "unknown"; |
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571 log->elem("failure reason='%s'", reason); |
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572 } |
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573 |
0 | 574 // <task_done ... stamp='1.234'> </task> |
575 nmethod* nm = code(); | |
576 log->begin_elem("task_done success='%d' nmsize='%d' count='%d'", | |
1748 | 577 _is_success, nm == NULL ? 0 : nm->content_size(), |
0 | 578 method->invocation_count()); |
579 int bec = method->backedge_count(); | |
580 if (bec != 0) log->print(" backedge_count='%d'", bec); | |
581 // Note: "_is_complete" is about to be set, but is not. | |
582 if (_num_inlined_bytecodes != 0) { | |
583 log->print(" inlined_bytes='%d'", _num_inlined_bytecodes); | |
584 } | |
585 log->stamp(); | |
586 log->end_elem(); | |
587 log->tail("task"); | |
588 log->clear_identities(); // next task will have different CI | |
589 if (log->unflushed_count() > 2000) { | |
590 log->flush(); | |
591 } | |
592 log->mark_file_end(); | |
593 } | |
594 | |
595 | |
596 | |
597 // Add a CompileTask to a CompileQueue | |
598 void CompileQueue::add(CompileTask* task) { | |
599 assert(lock()->owned_by_self(), "must own lock"); | |
600 | |
601 task->set_next(NULL); | |
1783 | 602 task->set_prev(NULL); |
0 | 603 |
604 if (_last == NULL) { | |
605 // The compile queue is empty. | |
606 assert(_first == NULL, "queue is empty"); | |
607 _first = task; | |
608 _last = task; | |
609 } else { | |
610 // Append the task to the queue. | |
611 assert(_last->next() == NULL, "not last"); | |
612 _last->set_next(task); | |
1783 | 613 task->set_prev(_last); |
0 | 614 _last = task; |
615 } | |
1783 | 616 ++_size; |
0 | 617 |
618 // Mark the method as being in the compile queue. | |
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619 task->method()->set_queued_for_compilation(); |
0 | 620 |
621 if (CIPrintCompileQueue) { | |
622 print(); | |
623 } | |
624 | |
625 if (LogCompilation && xtty != NULL) { | |
626 task->log_task_queued(); | |
627 } | |
628 | |
629 // Notify CompilerThreads that a task is available. | |
1783 | 630 lock()->notify_all(); |
0 | 631 } |
632 | |
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633 void CompileQueue::delete_all() { |
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634 assert(lock()->owned_by_self(), "must own lock"); |
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635 if (_first != NULL) { |
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636 for (CompileTask* task = _first; task != NULL; task = task->next()) { |
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637 delete task; |
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638 } |
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639 _first = NULL; |
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640 } |
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641 } |
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642 |
0 | 643 // ------------------------------------------------------------------ |
644 // CompileQueue::get | |
645 // | |
646 // Get the next CompileTask from a CompileQueue | |
647 CompileTask* CompileQueue::get() { | |
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648 NMethodSweeper::possibly_sweep(); |
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649 |
0 | 650 MutexLocker locker(lock()); |
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651 // If _first is NULL we have no more compile jobs. There are two reasons for |
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652 // having no compile jobs: First, we compiled everything we wanted. Second, |
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653 // we ran out of code cache so compilation has been disabled. In the latter |
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654 // case we perform code cache sweeps to free memory such that we can re-enable |
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655 // compilation. |
0 | 656 while (_first == NULL) { |
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657 // Exit loop if compilation is disabled forever |
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658 if (CompileBroker::is_compilation_disabled_forever()) { |
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659 return NULL; |
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660 } |
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661 |
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662 if (UseCodeCacheFlushing && !CompileBroker::should_compile_new_jobs()) { |
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663 // Wait a certain amount of time to possibly do another sweep. |
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664 // We must wait until stack scanning has happened so that we can |
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665 // transition a method's state from 'not_entrant' to 'zombie'. |
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666 long wait_time = NmethodSweepCheckInterval * 1000; |
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667 if (FLAG_IS_DEFAULT(NmethodSweepCheckInterval)) { |
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668 // Only one thread at a time can do sweeping. Scale the |
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669 // wait time according to the number of compiler threads. |
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670 // As a result, the next sweep is likely to happen every 100ms |
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671 // with an arbitrary number of threads that do sweeping. |
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672 wait_time = 100 * CICompilerCount; |
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673 } |
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674 bool timeout = lock()->wait(!Mutex::_no_safepoint_check_flag, wait_time); |
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675 if (timeout) { |
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676 MutexUnlocker ul(lock()); |
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677 NMethodSweeper::possibly_sweep(); |
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678 } |
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679 } else { |
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680 // If there are no compilation tasks and we can compile new jobs |
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681 // (i.e., there is enough free space in the code cache) there is |
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682 // no need to invoke the sweeper. As a result, the hotness of methods |
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683 // remains unchanged. This behavior is desired, since we want to keep |
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684 // the stable state, i.e., we do not want to evict methods from the |
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685 // code cache if it is unnecessary. |
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686 // We need a timed wait here, since compiler threads can exit if compilation |
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687 // is disabled forever. We use 5 seconds wait time; the exiting of compiler threads |
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688 // is not critical and we do not want idle compiler threads to wake up too often. |
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689 lock()->wait(!Mutex::_no_safepoint_check_flag, 5*1000); |
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690 } |
0 | 691 } |
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692 |
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693 if (CompileBroker::is_compilation_disabled_forever()) { |
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694 return NULL; |
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695 } |
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696 |
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697 CompileTask* task; |
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698 { |
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699 No_Safepoint_Verifier nsv; |
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700 task = CompilationPolicy::policy()->select_task(this); |
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701 } |
1783 | 702 remove(task); |
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703 purge_stale_tasks(); // may temporarily release MCQ lock |
1783 | 704 return task; |
705 } | |
0 | 706 |
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707 // Clean & deallocate stale compile tasks. |
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708 // Temporarily releases MethodCompileQueue lock. |
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709 void CompileQueue::purge_stale_tasks() { |
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710 assert(lock()->owned_by_self(), "must own lock"); |
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711 if (_first_stale != NULL) { |
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712 // Stale tasks are purged when MCQ lock is released, |
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713 // but _first_stale updates are protected by MCQ lock. |
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714 // Once task processing starts and MCQ lock is released, |
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715 // other compiler threads can reuse _first_stale. |
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716 CompileTask* head = _first_stale; |
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717 _first_stale = NULL; |
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718 { |
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719 MutexUnlocker ul(lock()); |
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720 for (CompileTask* task = head; task != NULL; ) { |
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721 CompileTask* next_task = task->next(); |
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722 CompileTaskWrapper ctw(task); // Frees the task |
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723 task->set_failure_reason("stale task"); |
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724 task = next_task; |
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725 } |
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726 } |
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727 } |
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728 } |
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729 |
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730 void CompileQueue::remove(CompileTask* task) { |
1783 | 731 assert(lock()->owned_by_self(), "must own lock"); |
732 if (task->prev() != NULL) { | |
733 task->prev()->set_next(task->next()); | |
734 } else { | |
735 // max is the first element | |
736 assert(task == _first, "Sanity"); | |
737 _first = task->next(); | |
0 | 738 } |
739 | |
1783 | 740 if (task->next() != NULL) { |
741 task->next()->set_prev(task->prev()); | |
742 } else { | |
743 // max is the last element | |
744 assert(task == _last, "Sanity"); | |
745 _last = task->prev(); | |
746 } | |
747 --_size; | |
0 | 748 } |
749 | |
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750 void CompileQueue::remove_and_mark_stale(CompileTask* task) { |
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751 assert(lock()->owned_by_self(), "must own lock"); |
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752 remove(task); |
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753 |
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754 // Enqueue the task for reclamation (should be done outside MCQ lock) |
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755 task->set_next(_first_stale); |
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756 task->set_prev(NULL); |
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757 _first_stale = task; |
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758 } |
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759 |
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760 // methods in the compile queue need to be marked as used on the stack |
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761 // so that they don't get reclaimed by Redefine Classes |
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762 void CompileQueue::mark_on_stack() { |
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763 CompileTask* task = _first; |
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764 while (task != NULL) { |
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765 task->mark_on_stack(); |
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766 task = task->next(); |
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767 } |
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768 } |
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769 |
0 | 770 // ------------------------------------------------------------------ |
771 // CompileQueue::print | |
772 void CompileQueue::print() { | |
773 tty->print_cr("Contents of %s", name()); | |
774 tty->print_cr("----------------------"); | |
775 CompileTask* task = _first; | |
776 while (task != NULL) { | |
777 task->print_line(); | |
778 task = task->next(); | |
779 } | |
780 tty->print_cr("----------------------"); | |
781 } | |
782 | |
783 CompilerCounters::CompilerCounters(const char* thread_name, int instance, TRAPS) { | |
784 | |
785 _current_method[0] = '\0'; | |
786 _compile_type = CompileBroker::no_compile; | |
787 | |
788 if (UsePerfData) { | |
789 ResourceMark rm; | |
790 | |
791 // create the thread instance name space string - don't create an | |
792 // instance subspace if instance is -1 - keeps the adapterThread | |
793 // counters from having a ".0" namespace. | |
794 const char* thread_i = (instance == -1) ? thread_name : | |
795 PerfDataManager::name_space(thread_name, instance); | |
796 | |
797 | |
798 char* name = PerfDataManager::counter_name(thread_i, "method"); | |
799 _perf_current_method = | |
800 PerfDataManager::create_string_variable(SUN_CI, name, | |
801 cmname_buffer_length, | |
802 _current_method, CHECK); | |
803 | |
804 name = PerfDataManager::counter_name(thread_i, "type"); | |
805 _perf_compile_type = PerfDataManager::create_variable(SUN_CI, name, | |
806 PerfData::U_None, | |
807 (jlong)_compile_type, | |
808 CHECK); | |
809 | |
810 name = PerfDataManager::counter_name(thread_i, "time"); | |
811 _perf_time = PerfDataManager::create_counter(SUN_CI, name, | |
812 PerfData::U_Ticks, CHECK); | |
813 | |
814 name = PerfDataManager::counter_name(thread_i, "compiles"); | |
815 _perf_compiles = PerfDataManager::create_counter(SUN_CI, name, | |
816 PerfData::U_Events, CHECK); | |
817 } | |
818 } | |
819 | |
820 // ------------------------------------------------------------------ | |
821 // CompileBroker::compilation_init | |
822 // | |
823 // Initialize the Compilation object | |
824 void CompileBroker::compilation_init() { | |
825 _last_method_compiled[0] = '\0'; | |
826 | |
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827 // No need to initialize compilation system if we do not use it. |
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828 if (!UseCompiler) { |
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829 return; |
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830 } |
1970 | 831 #ifndef SHARK |
0 | 832 // Set the interface to the current compiler(s). |
1783 | 833 int c1_count = CompilationPolicy::policy()->compiler_count(CompLevel_simple); |
834 int c2_count = CompilationPolicy::policy()->compiler_count(CompLevel_full_optimization); | |
0 | 835 #ifdef COMPILER1 |
1783 | 836 if (c1_count > 0) { |
837 _compilers[0] = new Compiler(); | |
838 } | |
0 | 839 #endif // COMPILER1 |
840 | |
841 #ifdef COMPILER2 | |
1783 | 842 if (c2_count > 0) { |
843 _compilers[1] = new C2Compiler(); | |
844 } | |
0 | 845 #endif // COMPILER2 |
846 | |
1970 | 847 #else // SHARK |
848 int c1_count = 0; | |
849 int c2_count = 1; | |
850 | |
851 _compilers[1] = new SharkCompiler(); | |
852 #endif // SHARK | |
1692 | 853 |
0 | 854 // Initialize the CompileTask free list |
855 _task_free_list = NULL; | |
856 | |
857 // Start the CompilerThreads | |
1783 | 858 init_compiler_threads(c1_count, c2_count); |
0 | 859 // totalTime performance counter is always created as it is required |
860 // by the implementation of java.lang.management.CompilationMBean. | |
861 { | |
862 EXCEPTION_MARK; | |
863 _perf_total_compilation = | |
864 PerfDataManager::create_counter(JAVA_CI, "totalTime", | |
865 PerfData::U_Ticks, CHECK); | |
866 } | |
867 | |
868 | |
869 if (UsePerfData) { | |
870 | |
871 EXCEPTION_MARK; | |
872 | |
873 // create the jvmstat performance counters | |
874 _perf_osr_compilation = | |
875 PerfDataManager::create_counter(SUN_CI, "osrTime", | |
876 PerfData::U_Ticks, CHECK); | |
877 | |
878 _perf_standard_compilation = | |
879 PerfDataManager::create_counter(SUN_CI, "standardTime", | |
880 PerfData::U_Ticks, CHECK); | |
881 | |
882 _perf_total_bailout_count = | |
883 PerfDataManager::create_counter(SUN_CI, "totalBailouts", | |
884 PerfData::U_Events, CHECK); | |
885 | |
886 _perf_total_invalidated_count = | |
887 PerfDataManager::create_counter(SUN_CI, "totalInvalidates", | |
888 PerfData::U_Events, CHECK); | |
889 | |
890 _perf_total_compile_count = | |
891 PerfDataManager::create_counter(SUN_CI, "totalCompiles", | |
892 PerfData::U_Events, CHECK); | |
893 _perf_total_osr_compile_count = | |
894 PerfDataManager::create_counter(SUN_CI, "osrCompiles", | |
895 PerfData::U_Events, CHECK); | |
896 | |
897 _perf_total_standard_compile_count = | |
898 PerfDataManager::create_counter(SUN_CI, "standardCompiles", | |
899 PerfData::U_Events, CHECK); | |
900 | |
901 _perf_sum_osr_bytes_compiled = | |
902 PerfDataManager::create_counter(SUN_CI, "osrBytes", | |
903 PerfData::U_Bytes, CHECK); | |
904 | |
905 _perf_sum_standard_bytes_compiled = | |
906 PerfDataManager::create_counter(SUN_CI, "standardBytes", | |
907 PerfData::U_Bytes, CHECK); | |
908 | |
909 _perf_sum_nmethod_size = | |
910 PerfDataManager::create_counter(SUN_CI, "nmethodSize", | |
911 PerfData::U_Bytes, CHECK); | |
912 | |
913 _perf_sum_nmethod_code_size = | |
914 PerfDataManager::create_counter(SUN_CI, "nmethodCodeSize", | |
915 PerfData::U_Bytes, CHECK); | |
916 | |
917 _perf_last_method = | |
918 PerfDataManager::create_string_variable(SUN_CI, "lastMethod", | |
919 CompilerCounters::cmname_buffer_length, | |
920 "", CHECK); | |
921 | |
922 _perf_last_failed_method = | |
923 PerfDataManager::create_string_variable(SUN_CI, "lastFailedMethod", | |
924 CompilerCounters::cmname_buffer_length, | |
925 "", CHECK); | |
926 | |
927 _perf_last_invalidated_method = | |
928 PerfDataManager::create_string_variable(SUN_CI, "lastInvalidatedMethod", | |
929 CompilerCounters::cmname_buffer_length, | |
930 "", CHECK); | |
931 | |
932 _perf_last_compile_type = | |
933 PerfDataManager::create_variable(SUN_CI, "lastType", | |
934 PerfData::U_None, | |
935 (jlong)CompileBroker::no_compile, | |
936 CHECK); | |
937 | |
938 _perf_last_compile_size = | |
939 PerfDataManager::create_variable(SUN_CI, "lastSize", | |
940 PerfData::U_Bytes, | |
941 (jlong)CompileBroker::no_compile, | |
942 CHECK); | |
943 | |
944 | |
945 _perf_last_failed_type = | |
946 PerfDataManager::create_variable(SUN_CI, "lastFailedType", | |
947 PerfData::U_None, | |
948 (jlong)CompileBroker::no_compile, | |
949 CHECK); | |
950 | |
951 _perf_last_invalidated_type = | |
952 PerfDataManager::create_variable(SUN_CI, "lastInvalidatedType", | |
953 PerfData::U_None, | |
954 (jlong)CompileBroker::no_compile, | |
955 CHECK); | |
956 } | |
957 | |
958 _initialized = true; | |
959 } | |
960 | |
961 | |
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962 CompilerThread* CompileBroker::make_compiler_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, |
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963 AbstractCompiler* comp, TRAPS) { |
0 | 964 CompilerThread* compiler_thread = NULL; |
965 | |
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966 Klass* k = |
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967 SystemDictionary::resolve_or_fail(vmSymbols::java_lang_Thread(), |
0 | 968 true, CHECK_0); |
969 instanceKlassHandle klass (THREAD, k); | |
970 instanceHandle thread_oop = klass->allocate_instance_handle(CHECK_0); | |
971 Handle string = java_lang_String::create_from_str(name, CHECK_0); | |
972 | |
973 // Initialize thread_oop to put it into the system threadGroup | |
974 Handle thread_group (THREAD, Universe::system_thread_group()); | |
975 JavaValue result(T_VOID); | |
976 JavaCalls::call_special(&result, thread_oop, | |
977 klass, | |
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978 vmSymbols::object_initializer_name(), |
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979 vmSymbols::threadgroup_string_void_signature(), |
0 | 980 thread_group, |
981 string, | |
982 CHECK_0); | |
983 | |
984 { | |
985 MutexLocker mu(Threads_lock, THREAD); | |
986 compiler_thread = new CompilerThread(queue, counters); | |
987 // At this point the new CompilerThread data-races with this startup | |
988 // thread (which I believe is the primoridal thread and NOT the VM | |
989 // thread). This means Java bytecodes being executed at startup can | |
990 // queue compile jobs which will run at whatever default priority the | |
991 // newly created CompilerThread runs at. | |
992 | |
993 | |
994 // At this point it may be possible that no osthread was created for the | |
995 // JavaThread due to lack of memory. We would have to throw an exception | |
996 // in that case. However, since this must work and we do not allow | |
997 // exceptions anyway, check and abort if this fails. | |
998 | |
999 if (compiler_thread == NULL || compiler_thread->osthread() == NULL){ | |
1000 vm_exit_during_initialization("java.lang.OutOfMemoryError", | |
1001 "unable to create new native thread"); | |
1002 } | |
1003 | |
1004 java_lang_Thread::set_thread(thread_oop(), compiler_thread); | |
1005 | |
1006 // Note that this only sets the JavaThread _priority field, which by | |
1007 // definition is limited to Java priorities and not OS priorities. | |
1008 // The os-priority is set in the CompilerThread startup code itself | |
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1009 |
0 | 1010 java_lang_Thread::set_priority(thread_oop(), NearMaxPriority); |
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1011 |
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1012 // Note that we cannot call os::set_priority because it expects Java |
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1013 // priorities and we are *explicitly* using OS priorities so that it's |
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1014 // possible to set the compiler thread priority higher than any Java |
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1015 // thread. |
0 | 1016 |
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1017 int native_prio = CompilerThreadPriority; |
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1018 if (native_prio == -1) { |
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1019 if (UseCriticalCompilerThreadPriority) { |
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1020 native_prio = os::java_to_os_priority[CriticalPriority]; |
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1021 } else { |
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1022 native_prio = os::java_to_os_priority[NearMaxPriority]; |
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1023 } |
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1024 } |
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1025 os::set_native_priority(compiler_thread, native_prio); |
0 | 1026 |
1027 java_lang_Thread::set_daemon(thread_oop()); | |
1028 | |
1029 compiler_thread->set_threadObj(thread_oop()); | |
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1030 compiler_thread->set_compiler(comp); |
0 | 1031 Threads::add(compiler_thread); |
1032 Thread::start(compiler_thread); | |
1033 } | |
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1034 |
0 | 1035 // Let go of Threads_lock before yielding |
1036 os::yield(); // make sure that the compiler thread is started early (especially helpful on SOLARIS) | |
1037 | |
1038 return compiler_thread; | |
1039 } | |
1040 | |
1041 | |
1783 | 1042 void CompileBroker::init_compiler_threads(int c1_compiler_count, int c2_compiler_count) { |
0 | 1043 EXCEPTION_MARK; |
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1044 #if !defined(ZERO) && !defined(SHARK) |
1783 | 1045 assert(c2_compiler_count > 0 || c1_compiler_count > 0, "No compilers?"); |
2447 | 1046 #endif // !ZERO && !SHARK |
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1047 // Initialize the compilation queue |
1783 | 1048 if (c2_compiler_count > 0) { |
1049 _c2_method_queue = new CompileQueue("C2MethodQueue", MethodCompileQueue_lock); | |
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1050 _compilers[1]->set_num_compiler_threads(c2_compiler_count); |
1783 | 1051 } |
1052 if (c1_compiler_count > 0) { | |
1053 _c1_method_queue = new CompileQueue("C1MethodQueue", MethodCompileQueue_lock); | |
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1054 _compilers[0]->set_num_compiler_threads(c1_compiler_count); |
1783 | 1055 } |
0 | 1056 |
1783 | 1057 int compiler_count = c1_compiler_count + c2_compiler_count; |
1058 | |
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1059 _compiler_threads = |
6197 | 1060 new (ResourceObj::C_HEAP, mtCompiler) GrowableArray<CompilerThread*>(compiler_count, true); |
0 | 1061 |
1062 char name_buffer[256]; | |
1783 | 1063 for (int i = 0; i < c2_compiler_count; i++) { |
0 | 1064 // Create a name for our thread. |
1783 | 1065 sprintf(name_buffer, "C2 CompilerThread%d", i); |
0 | 1066 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK); |
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1067 // Shark and C2 |
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1068 CompilerThread* new_thread = make_compiler_thread(name_buffer, _c2_method_queue, counters, _compilers[1], CHECK); |
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1069 _compiler_threads->append(new_thread); |
0 | 1070 } |
1783 | 1071 |
1072 for (int i = c2_compiler_count; i < compiler_count; i++) { | |
1073 // Create a name for our thread. | |
1074 sprintf(name_buffer, "C1 CompilerThread%d", i); | |
1075 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK); | |
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1076 // C1 |
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1077 CompilerThread* new_thread = make_compiler_thread(name_buffer, _c1_method_queue, counters, _compilers[0], CHECK); |
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1078 _compiler_threads->append(new_thread); |
1783 | 1079 } |
1080 | |
0 | 1081 if (UsePerfData) { |
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1082 PerfDataManager::create_constant(SUN_CI, "threads", PerfData::U_Bytes, compiler_count, CHECK); |
0 | 1083 } |
1084 } | |
1085 | |
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1086 |
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1087 // Set the methods on the stack as on_stack so that redefine classes doesn't |
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1088 // reclaim them |
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1089 void CompileBroker::mark_on_stack() { |
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1090 if (_c2_method_queue != NULL) { |
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1091 _c2_method_queue->mark_on_stack(); |
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1092 } |
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1093 if (_c1_method_queue != NULL) { |
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1094 _c1_method_queue->mark_on_stack(); |
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1095 } |
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1096 } |
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1097 |
0 | 1098 // ------------------------------------------------------------------ |
1099 // CompileBroker::compile_method | |
1100 // | |
1101 // Request compilation of a method. | |
1102 void CompileBroker::compile_method_base(methodHandle method, | |
1103 int osr_bci, | |
1104 int comp_level, | |
1105 methodHandle hot_method, | |
1106 int hot_count, | |
1107 const char* comment, | |
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1108 Thread* thread) { |
0 | 1109 // do nothing if compiler thread(s) is not available |
1110 if (!_initialized ) { | |
1111 return; | |
1112 } | |
1113 | |
1114 guarantee(!method->is_abstract(), "cannot compile abstract methods"); | |
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1115 assert(method->method_holder()->oop_is_instance(), |
0 | 1116 "sanity check"); |
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1117 assert(!method->method_holder()->is_not_initialized(), |
0 | 1118 "method holder must be initialized"); |
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1119 assert(!method->is_method_handle_intrinsic(), "do not enqueue these guys"); |
0 | 1120 |
1121 if (CIPrintRequests) { | |
1122 tty->print("request: "); | |
1123 method->print_short_name(tty); | |
1124 if (osr_bci != InvocationEntryBci) { | |
1125 tty->print(" osr_bci: %d", osr_bci); | |
1126 } | |
1127 tty->print(" comment: %s count: %d", comment, hot_count); | |
1128 if (!hot_method.is_null()) { | |
1129 tty->print(" hot: "); | |
1130 if (hot_method() != method()) { | |
1131 hot_method->print_short_name(tty); | |
1132 } else { | |
1133 tty->print("yes"); | |
1134 } | |
1135 } | |
1136 tty->cr(); | |
1137 } | |
1138 | |
1139 // A request has been made for compilation. Before we do any | |
1140 // real work, check to see if the method has been compiled | |
1141 // in the meantime with a definitive result. | |
1142 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
1143 return; | |
1144 } | |
1145 | |
2403 | 1146 #ifndef PRODUCT |
1147 if (osr_bci != -1 && !FLAG_IS_DEFAULT(OSROnlyBCI)) { | |
1148 if ((OSROnlyBCI > 0) ? (OSROnlyBCI != osr_bci) : (-OSROnlyBCI == osr_bci)) { | |
1149 // Positive OSROnlyBCI means only compile that bci. Negative means don't compile that BCI. | |
1150 return; | |
1151 } | |
1152 } | |
1153 #endif | |
1783 | 1154 |
0 | 1155 // If this method is already in the compile queue, then |
1156 // we do not block the current thread. | |
1157 if (compilation_is_in_queue(method, osr_bci)) { | |
1158 // We may want to decay our counter a bit here to prevent | |
1159 // multiple denied requests for compilation. This is an | |
1160 // open compilation policy issue. Note: The other possibility, | |
1161 // in the case that this is a blocking compile request, is to have | |
1162 // all subsequent blocking requesters wait for completion of | |
1163 // ongoing compiles. Note that in this case we'll need a protocol | |
1164 // for freeing the associated compile tasks. [Or we could have | |
1165 // a single static monitor on which all these waiters sleep.] | |
1166 return; | |
1167 } | |
1168 | |
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1169 // If the requesting thread is holding the pending list lock |
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1170 // then we just return. We can't risk blocking while holding |
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1171 // the pending list lock or a 3-way deadlock may occur |
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1172 // between the reference handler thread, a GC (instigated |
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1173 // by a compiler thread), and compiled method registration. |
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1174 if (InstanceRefKlass::owns_pending_list_lock(JavaThread::current())) { |
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1175 return; |
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1176 } |
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1177 |
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1178 if (TieredCompilation) { |
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1179 // Tiered policy requires MethodCounters to exist before adding a method to |
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1180 // the queue. Create if we don't have them yet. |
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1181 method->get_method_counters(thread); |
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1182 } |
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1183 |
0 | 1184 // Outputs from the following MutexLocker block: |
1185 CompileTask* task = NULL; | |
1186 bool blocking = false; | |
1783 | 1187 CompileQueue* queue = compile_queue(comp_level); |
0 | 1188 |
1189 // Acquire our lock. | |
1190 { | |
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1191 MutexLocker locker(queue->lock(), thread); |
0 | 1192 |
1193 // Make sure the method has not slipped into the queues since | |
1194 // last we checked; note that those checks were "fast bail-outs". | |
1195 // Here we need to be more careful, see 14012000 below. | |
1196 if (compilation_is_in_queue(method, osr_bci)) { | |
1197 return; | |
1198 } | |
1199 | |
1200 // We need to check again to see if the compilation has | |
1201 // completed. A previous compilation may have registered | |
1202 // some result. | |
1203 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
1204 return; | |
1205 } | |
1206 | |
1207 // We now know that this compilation is not pending, complete, | |
1208 // or prohibited. Assign a compile_id to this compilation | |
1209 // and check to see if it is in our [Start..Stop) range. | |
17625 | 1210 int compile_id = assign_compile_id(method, osr_bci); |
0 | 1211 if (compile_id == 0) { |
1212 // The compilation falls outside the allowed range. | |
1213 return; | |
1214 } | |
1215 | |
1216 // Should this thread wait for completion of the compile? | |
1217 blocking = is_compile_blocking(method, osr_bci); | |
1218 | |
1219 // We will enter the compilation in the queue. | |
1220 // 14012000: Note that this sets the queued_for_compile bits in | |
1221 // the target method. We can now reason that a method cannot be | |
1222 // queued for compilation more than once, as follows: | |
1223 // Before a thread queues a task for compilation, it first acquires | |
1224 // the compile queue lock, then checks if the method's queued bits | |
1225 // are set or it has already been compiled. Thus there can not be two | |
1226 // instances of a compilation task for the same method on the | |
1227 // compilation queue. Consider now the case where the compilation | |
1228 // thread has already removed a task for that method from the queue | |
1229 // and is in the midst of compiling it. In this case, the | |
1230 // queued_for_compile bits must be set in the method (and these | |
1231 // will be visible to the current thread, since the bits were set | |
1232 // under protection of the compile queue lock, which we hold now. | |
1233 // When the compilation completes, the compiler thread first sets | |
1234 // the compilation result and then clears the queued_for_compile | |
1235 // bits. Neither of these actions are protected by a barrier (or done | |
1236 // under the protection of a lock), so the only guarantee we have | |
1237 // (on machines with TSO (Total Store Order)) is that these values | |
1238 // will update in that order. As a result, the only combinations of | |
1239 // these bits that the current thread will see are, in temporal order: | |
1240 // <RESULT, QUEUE> : | |
1241 // <0, 1> : in compile queue, but not yet compiled | |
1242 // <1, 1> : compiled but queue bit not cleared | |
1243 // <1, 0> : compiled and queue bit cleared | |
1244 // Because we first check the queue bits then check the result bits, | |
1245 // we are assured that we cannot introduce a duplicate task. | |
1246 // Note that if we did the tests in the reverse order (i.e. check | |
1247 // result then check queued bit), we could get the result bit before | |
1248 // the compilation completed, and the queue bit after the compilation | |
1249 // completed, and end up introducing a "duplicate" (redundant) task. | |
1250 // In that case, the compiler thread should first check if a method | |
1251 // has already been compiled before trying to compile it. | |
1252 // NOTE: in the event that there are multiple compiler threads and | |
1253 // there is de-optimization/recompilation, things will get hairy, | |
1254 // and in that case it's best to protect both the testing (here) of | |
1255 // these bits, and their updating (here and elsewhere) under a | |
1256 // common lock. | |
1783 | 1257 task = create_compile_task(queue, |
0 | 1258 compile_id, method, |
1259 osr_bci, comp_level, | |
1260 hot_method, hot_count, comment, | |
1261 blocking); | |
1262 } | |
1263 | |
1264 if (blocking) { | |
1265 wait_for_completion(task); | |
1266 } | |
1267 } | |
1268 | |
1269 | |
1270 nmethod* CompileBroker::compile_method(methodHandle method, int osr_bci, | |
1783 | 1271 int comp_level, |
0 | 1272 methodHandle hot_method, int hot_count, |
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1273 const char* comment, Thread* THREAD) { |
0 | 1274 // make sure arguments make sense |
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1275 assert(method->method_holder()->oop_is_instance(), "not an instance method"); |
0 | 1276 assert(osr_bci == InvocationEntryBci || (0 <= osr_bci && osr_bci < method->code_size()), "bci out of range"); |
1277 assert(!method->is_abstract() && (osr_bci == InvocationEntryBci || !method->is_native()), "cannot compile abstract/native methods"); | |
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1278 assert(!method->method_holder()->is_not_initialized(), "method holder must be initialized"); |
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1279 // allow any levels for WhiteBox |
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1280 assert(WhiteBoxAPI || TieredCompilation || comp_level == CompLevel_highest_tier, "only CompLevel_highest_tier must be used in non-tiered"); |
0 | 1281 // return quickly if possible |
1282 | |
1283 // lock, make sure that the compilation | |
1284 // isn't prohibited in a straightforward way. | |
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1285 AbstractCompiler *comp = CompileBroker::compiler(comp_level); |
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1286 if (comp == NULL || !comp->can_compile_method(method) || |
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1287 compilation_is_prohibited(method, osr_bci, comp_level)) { |
0 | 1288 return NULL; |
1289 } | |
1290 | |
1291 if (osr_bci == InvocationEntryBci) { | |
1292 // standard compilation | |
1293 nmethod* method_code = method->code(); | |
1783 | 1294 if (method_code != NULL) { |
1295 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
1296 return method_code; | |
1297 } | |
0 | 1298 } |
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1299 if (method->is_not_compilable(comp_level)) { |
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1300 return NULL; |
1202 | 1301 } |
0 | 1302 } else { |
1303 // osr compilation | |
1304 #ifndef TIERED | |
1305 // seems like an assert of dubious value | |
1783 | 1306 assert(comp_level == CompLevel_highest_tier, |
0 | 1307 "all OSR compiles are assumed to be at a single compilation lavel"); |
1308 #endif // TIERED | |
1783 | 1309 // We accept a higher level osr method |
1310 nmethod* nm = method->lookup_osr_nmethod_for(osr_bci, comp_level, false); | |
0 | 1311 if (nm != NULL) return nm; |
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1312 if (method->is_not_osr_compilable(comp_level)) return NULL; |
0 | 1313 } |
1314 | |
1315 assert(!HAS_PENDING_EXCEPTION, "No exception should be present"); | |
1316 // some prerequisites that are compiler specific | |
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1317 if (comp->is_c2() || comp->is_shark()) { |
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1318 method->constants()->resolve_string_constants(CHECK_AND_CLEAR_NULL); |
0 | 1319 // Resolve all classes seen in the signature of the method |
1320 // we are compiling. | |
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1321 Method::load_signature_classes(method, CHECK_AND_CLEAR_NULL); |
0 | 1322 } |
1323 | |
1324 // If the method is native, do the lookup in the thread requesting | |
1325 // the compilation. Native lookups can load code, which is not | |
1326 // permitted during compilation. | |
1327 // | |
1328 // Note: A native method implies non-osr compilation which is | |
1329 // checked with an assertion at the entry of this method. | |
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1330 if (method->is_native() && !method->is_method_handle_intrinsic()) { |
0 | 1331 bool in_base_library; |
1332 address adr = NativeLookup::lookup(method, in_base_library, THREAD); | |
1333 if (HAS_PENDING_EXCEPTION) { | |
1334 // In case of an exception looking up the method, we just forget | |
1335 // about it. The interpreter will kick-in and throw the exception. | |
1336 method->set_not_compilable(); // implies is_not_osr_compilable() | |
1337 CLEAR_PENDING_EXCEPTION; | |
1338 return NULL; | |
1339 } | |
1340 assert(method->has_native_function(), "must have native code by now"); | |
1341 } | |
1342 | |
1343 // RedefineClasses() has replaced this method; just return | |
1344 if (method->is_old()) { | |
1345 return NULL; | |
1346 } | |
1347 | |
1348 // JVMTI -- post_compile_event requires jmethod_id() that may require | |
1349 // a lock the compiling thread can not acquire. Prefetch it here. | |
1350 if (JvmtiExport::should_post_compiled_method_load()) { | |
1351 method->jmethod_id(); | |
1352 } | |
1353 | |
1354 // do the compilation | |
1355 if (method->is_native()) { | |
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1356 if (!PreferInterpreterNativeStubs || method->is_method_handle_intrinsic()) { |
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1357 // To properly handle the appendix argument for out-of-line calls we are using a small trampoline that |
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1358 // pops off the appendix argument and jumps to the target (see gen_special_dispatch in SharedRuntime). |
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1359 // |
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1360 // Since normal compiled-to-compiled calls are not able to handle such a thing we MUST generate an adapter |
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1361 // in this case. If we can't generate one and use it we can not execute the out-of-line method handle calls. |
17625 | 1362 AdapterHandlerLibrary::create_native_wrapper(method); |
0 | 1363 } else { |
1364 return NULL; | |
1365 } | |
1366 } else { | |
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1367 // If the compiler is shut off due to code cache getting full |
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1368 // fail out now so blocking compiles dont hang the java thread |
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1369 if (!should_compile_new_jobs()) { |
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1370 CompilationPolicy::policy()->delay_compilation(method()); |
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1371 return NULL; |
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1372 } |
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1373 compile_method_base(method, osr_bci, comp_level, hot_method, hot_count, comment, THREAD); |
0 | 1374 } |
1375 | |
1376 // return requested nmethod | |
1783 | 1377 // We accept a higher level osr method |
1378 return osr_bci == InvocationEntryBci ? method->code() : method->lookup_osr_nmethod_for(osr_bci, comp_level, false); | |
0 | 1379 } |
1380 | |
1381 | |
1382 // ------------------------------------------------------------------ | |
1383 // CompileBroker::compilation_is_complete | |
1384 // | |
1385 // See if compilation of this method is already complete. | |
1386 bool CompileBroker::compilation_is_complete(methodHandle method, | |
1387 int osr_bci, | |
1388 int comp_level) { | |
1389 bool is_osr = (osr_bci != standard_entry_bci); | |
1390 if (is_osr) { | |
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1391 if (method->is_not_osr_compilable(comp_level)) { |
0 | 1392 return true; |
1393 } else { | |
1783 | 1394 nmethod* result = method->lookup_osr_nmethod_for(osr_bci, comp_level, true); |
0 | 1395 return (result != NULL); |
1396 } | |
1397 } else { | |
1398 if (method->is_not_compilable(comp_level)) { | |
1399 return true; | |
1400 } else { | |
1401 nmethod* result = method->code(); | |
1402 if (result == NULL) return false; | |
1783 | 1403 return comp_level == result->comp_level(); |
0 | 1404 } |
1405 } | |
1406 } | |
1407 | |
1408 | |
1409 // ------------------------------------------------------------------ | |
1410 // CompileBroker::compilation_is_in_queue | |
1411 // | |
1412 // See if this compilation is already requested. | |
1413 // | |
1414 // Implementation note: there is only a single "is in queue" bit | |
1415 // for each method. This means that the check below is overly | |
1416 // conservative in the sense that an osr compilation in the queue | |
1417 // will block a normal compilation from entering the queue (and vice | |
1418 // versa). This can be remedied by a full queue search to disambiguate | |
1419 // cases. If it is deemed profitible, this may be done. | |
1420 bool CompileBroker::compilation_is_in_queue(methodHandle method, | |
1783 | 1421 int osr_bci) { |
0 | 1422 return method->queued_for_compilation(); |
1423 } | |
1424 | |
1425 // ------------------------------------------------------------------ | |
1426 // CompileBroker::compilation_is_prohibited | |
1427 // | |
1428 // See if this compilation is not allowed. | |
1429 bool CompileBroker::compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level) { | |
1430 bool is_native = method->is_native(); | |
1431 // Some compilers may not support the compilation of natives. | |
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1432 AbstractCompiler *comp = compiler(comp_level); |
0 | 1433 if (is_native && |
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1434 (!CICompileNatives || comp == NULL || !comp->supports_native())) { |
1783 | 1435 method->set_not_compilable_quietly(comp_level); |
0 | 1436 return true; |
1437 } | |
1438 | |
1439 bool is_osr = (osr_bci != standard_entry_bci); | |
1440 // Some compilers may not support on stack replacement. | |
1441 if (is_osr && | |
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1442 (!CICompileOSR || comp == NULL || !comp->supports_osr())) { |
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1443 method->set_not_osr_compilable(comp_level); |
0 | 1444 return true; |
1445 } | |
1446 | |
1447 // The method may be explicitly excluded by the user. | |
1448 bool quietly; | |
1449 if (CompilerOracle::should_exclude(method, quietly)) { | |
1450 if (!quietly) { | |
1451 // This does not happen quietly... | |
1452 ResourceMark rm; | |
1453 tty->print("### Excluding %s:%s", | |
1454 method->is_native() ? "generation of native wrapper" : "compile", | |
1455 (method->is_static() ? " static" : "")); | |
1456 method->print_short_name(tty); | |
1457 tty->cr(); | |
1458 } | |
7998 | 1459 method->set_not_compilable(CompLevel_all, !quietly, "excluded by CompilerOracle"); |
0 | 1460 } |
1461 | |
1462 return false; | |
1463 } | |
1464 | |
17625 | 1465 /** |
1466 * Generate serialized IDs for compilation requests. If certain debugging flags are used | |
1467 * and the ID is not within the specified range, the method is not compiled and 0 is returned. | |
1468 * The function also allows to generate separate compilation IDs for OSR compilations. | |
1469 */ | |
1470 int CompileBroker::assign_compile_id(methodHandle method, int osr_bci) { | |
1471 #ifdef ASSERT | |
0 | 1472 bool is_osr = (osr_bci != standard_entry_bci); |
17625 | 1473 int id; |
1474 if (method->is_native()) { | |
1475 assert(!is_osr, "can't be osr"); | |
1476 // Adapters, native wrappers and method handle intrinsics | |
1477 // should be generated always. | |
1478 return Atomic::add(1, &_compilation_id); | |
1479 } else if (CICountOSR && is_osr) { | |
1480 id = Atomic::add(1, &_osr_compilation_id); | |
1481 if (CIStartOSR <= id && id < CIStopOSR) { | |
0 | 1482 return id; |
1483 } | |
1484 } else { | |
17625 | 1485 id = Atomic::add(1, &_compilation_id); |
1486 if (CIStart <= id && id < CIStop) { | |
0 | 1487 return id; |
1488 } | |
1489 } | |
1490 | |
1491 // Method was not in the appropriate compilation range. | |
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1492 method->set_not_compilable_quietly(); |
0 | 1493 return 0; |
17625 | 1494 #else |
1495 // CICountOSR is a develop flag and set to 'false' by default. In a product built, | |
1496 // only _compilation_id is incremented. | |
1497 return Atomic::add(1, &_compilation_id); | |
1498 #endif | |
0 | 1499 } |
1500 | |
1501 | |
1502 // ------------------------------------------------------------------ | |
1503 // CompileBroker::is_compile_blocking | |
1504 // | |
1505 // Should the current thread be blocked until this compilation request | |
1506 // has been fulfilled? | |
1507 bool CompileBroker::is_compile_blocking(methodHandle method, int osr_bci) { | |
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1508 assert(!InstanceRefKlass::owns_pending_list_lock(JavaThread::current()), "possible deadlock"); |
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1509 return !BackgroundCompilation; |
0 | 1510 } |
1511 | |
1512 | |
1513 // ------------------------------------------------------------------ | |
1514 // CompileBroker::preload_classes | |
1515 void CompileBroker::preload_classes(methodHandle method, TRAPS) { | |
1516 // Move this code over from c1_Compiler.cpp | |
1517 ShouldNotReachHere(); | |
1518 } | |
1519 | |
1520 | |
1521 // ------------------------------------------------------------------ | |
1522 // CompileBroker::create_compile_task | |
1523 // | |
1524 // Create a CompileTask object representing the current request for | |
1525 // compilation. Add this task to the queue. | |
1526 CompileTask* CompileBroker::create_compile_task(CompileQueue* queue, | |
1527 int compile_id, | |
1528 methodHandle method, | |
1529 int osr_bci, | |
1530 int comp_level, | |
1531 methodHandle hot_method, | |
1532 int hot_count, | |
1533 const char* comment, | |
1534 bool blocking) { | |
1535 CompileTask* new_task = allocate_task(); | |
1536 new_task->initialize(compile_id, method, osr_bci, comp_level, | |
1537 hot_method, hot_count, comment, | |
1538 blocking); | |
1539 queue->add(new_task); | |
1540 return new_task; | |
1541 } | |
1542 | |
1543 | |
1544 // ------------------------------------------------------------------ | |
1545 // CompileBroker::allocate_task | |
1546 // | |
1547 // Allocate a CompileTask, from the free list if possible. | |
1548 CompileTask* CompileBroker::allocate_task() { | |
1549 MutexLocker locker(CompileTaskAlloc_lock); | |
1550 CompileTask* task = NULL; | |
1551 if (_task_free_list != NULL) { | |
1552 task = _task_free_list; | |
1553 _task_free_list = task->next(); | |
1554 task->set_next(NULL); | |
1555 } else { | |
1556 task = new CompileTask(); | |
1557 task->set_next(NULL); | |
1558 } | |
1559 return task; | |
1560 } | |
1561 | |
1562 | |
1563 // ------------------------------------------------------------------ | |
1564 // CompileBroker::free_task | |
1565 // | |
1566 // Add a task to the free list. | |
1567 void CompileBroker::free_task(CompileTask* task) { | |
1568 MutexLocker locker(CompileTaskAlloc_lock); | |
1569 task->free(); | |
1570 task->set_next(_task_free_list); | |
1571 _task_free_list = task; | |
1572 } | |
1573 | |
1574 | |
1575 // ------------------------------------------------------------------ | |
1576 // CompileBroker::wait_for_completion | |
1577 // | |
1578 // Wait for the given method CompileTask to complete. | |
1579 void CompileBroker::wait_for_completion(CompileTask* task) { | |
1580 if (CIPrintCompileQueue) { | |
1581 tty->print_cr("BLOCKING FOR COMPILE"); | |
1582 } | |
1583 | |
1584 assert(task->is_blocking(), "can only wait on blocking task"); | |
1585 | |
1586 JavaThread *thread = JavaThread::current(); | |
1587 thread->set_blocked_on_compilation(true); | |
1588 | |
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1589 methodHandle method(thread, task->method()); |
0 | 1590 { |
1591 MutexLocker waiter(task->lock(), thread); | |
1592 | |
1593 while (!task->is_complete()) | |
1594 task->lock()->wait(); | |
1595 } | |
1596 // It is harmless to check this status without the lock, because | |
1597 // completion is a stable property (until the task object is recycled). | |
1598 assert(task->is_complete(), "Compilation should have completed"); | |
1599 assert(task->code_handle() == NULL, "must be reset"); | |
1600 | |
1601 thread->set_blocked_on_compilation(false); | |
1602 | |
1603 // By convention, the waiter is responsible for recycling a | |
1604 // blocking CompileTask. Since there is only one waiter ever | |
1605 // waiting on a CompileTask, we know that no one else will | |
1606 // be using this CompileTask; we can free it. | |
1607 free_task(task); | |
1608 } | |
1609 | |
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1610 // Initialize compiler thread(s) + compiler object(s). The postcondition |
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1611 // of this function is that the compiler runtimes are initialized and that |
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1612 //compiler threads can start compiling. |
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1613 bool CompileBroker::init_compiler_runtime() { |
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1614 CompilerThread* thread = CompilerThread::current(); |
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1615 AbstractCompiler* comp = thread->compiler(); |
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1616 // Final sanity check - the compiler object must exist |
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1617 guarantee(comp != NULL, "Compiler object must exist"); |
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1618 |
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1619 int system_dictionary_modification_counter; |
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1620 { |
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1621 MutexLocker locker(Compile_lock, thread); |
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1622 system_dictionary_modification_counter = SystemDictionary::number_of_modifications(); |
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1623 } |
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1624 |
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1625 { |
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1626 // Must switch to native to allocate ci_env |
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1627 ThreadToNativeFromVM ttn(thread); |
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1628 ciEnv ci_env(NULL, system_dictionary_modification_counter); |
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1629 // Cache Jvmti state |
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1630 ci_env.cache_jvmti_state(); |
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1631 // Cache DTrace flags |
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1632 ci_env.cache_dtrace_flags(); |
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1633 |
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1634 // Switch back to VM state to do compiler initialization |
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1635 ThreadInVMfromNative tv(thread); |
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1636 ResetNoHandleMark rnhm; |
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1637 |
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1638 |
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1639 if (!comp->is_shark()) { |
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1640 // Perform per-thread and global initializations |
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1641 comp->initialize(); |
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1642 } |
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1643 } |
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1644 |
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1645 if (comp->is_failed()) { |
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1646 disable_compilation_forever(); |
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1647 // If compiler initialization failed, no compiler thread that is specific to a |
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1648 // particular compiler runtime will ever start to compile methods. |
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1649 |
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1650 shutdown_compiler_runtime(comp, thread); |
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1651 return false; |
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1652 } |
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1653 |
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1654 // C1 specific check |
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1655 if (comp->is_c1() && (thread->get_buffer_blob() == NULL)) { |
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1656 warning("Initialization of %s thread failed (no space to run compilers)", thread->name()); |
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1657 return false; |
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1658 } |
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1659 |
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1660 return true; |
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1661 } |
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1662 |
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1663 // If C1 and/or C2 initialization failed, we shut down all compilation. |
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1664 // We do this to keep things simple. This can be changed if it ever turns out to be |
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1665 // a problem. |
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1666 void CompileBroker::shutdown_compiler_runtime(AbstractCompiler* comp, CompilerThread* thread) { |
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1667 // Free buffer blob, if allocated |
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1668 if (thread->get_buffer_blob() != NULL) { |
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1669 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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1670 CodeCache::free(thread->get_buffer_blob()); |
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1671 } |
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1672 |
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1673 if (comp->should_perform_shutdown()) { |
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1674 // There are two reasons for shutting down the compiler |
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1675 // 1) compiler runtime initialization failed |
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1676 // 2) The code cache is full and the following flag is set: -XX:-UseCodeCacheFlushing |
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1677 warning("Shutting down compiler %s (no space to run compilers)", comp->name()); |
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1678 |
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1679 // Only one thread per compiler runtime object enters here |
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1680 // Set state to shut down |
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1681 comp->set_shut_down(); |
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1682 |
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1683 MutexLocker mu(MethodCompileQueue_lock, thread); |
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1684 CompileQueue* queue; |
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1685 if (_c1_method_queue != NULL) { |
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1686 _c1_method_queue->delete_all(); |
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1687 queue = _c1_method_queue; |
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1688 _c1_method_queue = NULL; |
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1689 delete _c1_method_queue; |
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1690 } |
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1691 |
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1692 if (_c2_method_queue != NULL) { |
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1693 _c2_method_queue->delete_all(); |
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1694 queue = _c2_method_queue; |
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1695 _c2_method_queue = NULL; |
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1696 delete _c2_method_queue; |
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1697 } |
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1698 |
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1699 // We could delete compiler runtimes also. However, there are references to |
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1700 // the compiler runtime(s) (e.g., nmethod::is_compiled_by_c1()) which then |
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1701 // fail. This can be done later if necessary. |
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1702 } |
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1703 } |
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1704 |
0 | 1705 // ------------------------------------------------------------------ |
1706 // CompileBroker::compiler_thread_loop | |
1707 // | |
1708 // The main loop run by a CompilerThread. | |
1709 void CompileBroker::compiler_thread_loop() { | |
1710 CompilerThread* thread = CompilerThread::current(); | |
1711 CompileQueue* queue = thread->queue(); | |
1712 // For the thread that initializes the ciObjectFactory | |
1713 // this resource mark holds all the shared objects | |
1714 ResourceMark rm; | |
1715 | |
1716 // First thread to get here will initialize the compiler interface | |
1717 | |
1718 if (!ciObjectFactory::is_initialized()) { | |
1719 ASSERT_IN_VM; | |
1720 MutexLocker only_one (CompileThread_lock, thread); | |
1721 if (!ciObjectFactory::is_initialized()) { | |
1722 ciObjectFactory::initialize(); | |
1723 } | |
1724 } | |
1725 | |
1726 // Open a log. | |
1727 if (LogCompilation) { | |
1728 init_compiler_thread_log(); | |
1729 } | |
1730 CompileLog* log = thread->log(); | |
1731 if (log != NULL) { | |
6843 | 1732 log->begin_elem("start_compile_thread name='%s' thread='" UINTX_FORMAT "' process='%d'", |
1733 thread->name(), | |
0 | 1734 os::current_thread_id(), |
1735 os::current_process_id()); | |
1736 log->stamp(); | |
1737 log->end_elem(); | |
1738 } | |
1739 | |
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1740 // If compiler thread/runtime initialization fails, exit the compiler thread |
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1741 if (!init_compiler_runtime()) { |
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1742 return; |
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1743 } |
1202 | 1744 |
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1745 // Poll for new compilation tasks as long as the JVM runs. Compilation |
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1746 // should only be disabled if something went wrong while initializing the |
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1747 // compiler runtimes. This, in turn, should not happen. The only known case |
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1748 // when compiler runtime initialization fails is if there is not enough free |
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1749 // space in the code cache to generate the necessary stubs, etc. |
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1750 while (!is_compilation_disabled_forever()) { |
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1751 // We need this HandleMark to avoid leaking VM handles. |
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1752 HandleMark hm(thread); |
0 | 1753 |
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1754 if (CodeCache::unallocated_capacity() < CodeCacheMinimumFreeSpace) { |
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1755 // the code cache is really full |
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1756 handle_full_code_cache(); |
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1757 } |
0 | 1758 |
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1759 CompileTask* task = queue->get(); |
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1760 if (task == NULL) { |
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1761 continue; |
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1762 } |
0 | 1763 |
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1764 // Give compiler threads an extra quanta. They tend to be bursty and |
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1765 // this helps the compiler to finish up the job. |
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1766 if( CompilerThreadHintNoPreempt ) |
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1767 os::hint_no_preempt(); |
0 | 1768 |
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1769 // trace per thread time and compile statistics |
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1770 CompilerCounters* counters = ((CompilerThread*)thread)->counters(); |
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1771 PerfTraceTimedEvent(counters->time_counter(), counters->compile_counter()); |
0 | 1772 |
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1773 // Assign the task to the current thread. Mark this compilation |
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1774 // thread as active for the profiler. |
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1775 CompileTaskWrapper ctw(task); |
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1776 nmethodLocker result_handle; // (handle for the nmethod produced by this task) |
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1777 task->set_code_handle(&result_handle); |
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1778 methodHandle method(thread, task->method()); |
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1779 |
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1780 // Never compile a method if breakpoints are present in it |
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1781 if (method()->number_of_breakpoints() == 0) { |
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1782 // Compile the method. |
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1783 if ((UseCompiler || AlwaysCompileLoopMethods) && CompileBroker::should_compile_new_jobs()) { |
0 | 1784 #ifdef COMPILER1 |
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1785 // Allow repeating compilations for the purpose of benchmarking |
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1786 // compile speed. This is not useful for customers. |
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1787 if (CompilationRepeat != 0) { |
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1788 int compile_count = CompilationRepeat; |
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1789 while (compile_count > 0) { |
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1790 invoke_compiler_on_method(task); |
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1791 nmethod* nm = method->code(); |
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1792 if (nm != NULL) { |
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1793 nm->make_zombie(); |
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1794 method->clear_code(); |
0 | 1795 } |
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1796 compile_count--; |
0 | 1797 } |
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1798 } |
0 | 1799 #endif /* COMPILER1 */ |
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1800 invoke_compiler_on_method(task); |
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1801 } else { |
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1802 // After compilation is disabled, remove remaining methods from queue |
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1803 method->clear_queued_for_compilation(); |
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1804 task->set_failure_reason("compilation is disabled"); |
0 | 1805 } |
1806 } | |
1807 } | |
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1808 |
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1809 // Shut down compiler runtime |
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1810 shutdown_compiler_runtime(thread->compiler(), thread); |
0 | 1811 } |
1812 | |
1813 // ------------------------------------------------------------------ | |
1814 // CompileBroker::init_compiler_thread_log | |
1815 // | |
1816 // Set up state required by +LogCompilation. | |
1817 void CompileBroker::init_compiler_thread_log() { | |
1818 CompilerThread* thread = CompilerThread::current(); | |
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1819 char file_name[4*K]; |
0 | 1820 FILE* fp = NULL; |
1821 intx thread_id = os::current_thread_id(); | |
1822 for (int try_temp_dir = 1; try_temp_dir >= 0; try_temp_dir--) { | |
1823 const char* dir = (try_temp_dir ? os::get_temp_directory() : NULL); | |
1353
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1824 if (dir == NULL) { |
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1825 jio_snprintf(file_name, sizeof(file_name), "hs_c" UINTX_FORMAT "_pid%u.log", |
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1826 thread_id, os::current_process_id()); |
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1827 } else { |
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1828 jio_snprintf(file_name, sizeof(file_name), |
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1829 "%s%shs_c" UINTX_FORMAT "_pid%u.log", dir, |
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1830 os::file_separator(), thread_id, os::current_process_id()); |
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1831 } |
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1832 |
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|
1833 fp = fopen(file_name, "at"); |
0 | 1834 if (fp != NULL) { |
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1835 if (LogCompilation && Verbose) { |
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1836 tty->print_cr("Opening compilation log %s", file_name); |
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1837 } |
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1838 CompileLog* log = new(ResourceObj::C_HEAP, mtCompiler) CompileLog(file_name, fp, thread_id); |
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1839 thread->init_log(log); |
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1840 |
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1841 if (xtty != NULL) { |
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1842 ttyLocker ttyl; |
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1843 // Record any per thread log files |
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1844 xtty->elem("thread_logfile thread='" INTX_FORMAT "' filename='%s'", thread_id, file_name); |
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1845 } |
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1846 return; |
0 | 1847 } |
1848 } | |
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1849 warning("Cannot open log file: %s", file_name); |
0 | 1850 } |
1851 | |
1852 // ------------------------------------------------------------------ | |
1853 // CompileBroker::set_should_block | |
1854 // | |
1855 // Set _should_block. | |
1856 // Call this from the VM, with Threads_lock held and a safepoint requested. | |
1857 void CompileBroker::set_should_block() { | |
1858 assert(Threads_lock->owner() == Thread::current(), "must have threads lock"); | |
1859 assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint already"); | |
1860 #ifndef PRODUCT | |
1861 if (PrintCompilation && (Verbose || WizardMode)) | |
1862 tty->print_cr("notifying compiler thread pool to block"); | |
1863 #endif | |
1864 _should_block = true; | |
1865 } | |
1866 | |
1867 // ------------------------------------------------------------------ | |
1868 // CompileBroker::maybe_block | |
1869 // | |
1870 // Call this from the compiler at convenient points, to poll for _should_block. | |
1871 void CompileBroker::maybe_block() { | |
1872 if (_should_block) { | |
1873 #ifndef PRODUCT | |
1874 if (PrintCompilation && (Verbose || WizardMode)) | |
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1875 tty->print_cr("compiler thread " INTPTR_FORMAT " poll detects block request", p2i(Thread::current())); |
0 | 1876 #endif |
1877 ThreadInVMfromNative tivfn(JavaThread::current()); | |
1878 } | |
1879 } | |
1880 | |
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1881 // wrapper for CodeCache::print_summary() |
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1882 static void codecache_print(bool detailed) |
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1883 { |
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1884 ResourceMark rm; |
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1885 stringStream s; |
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1886 // Dump code cache into a buffer before locking the tty, |
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1887 { |
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1888 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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1889 CodeCache::print_summary(&s, detailed); |
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1890 } |
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1891 ttyLocker ttyl; |
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1892 tty->print("%s", s.as_string()); |
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1893 } |
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1894 |
0 | 1895 // ------------------------------------------------------------------ |
1896 // CompileBroker::invoke_compiler_on_method | |
1897 // | |
1898 // Compile a method. | |
1899 // | |
1900 void CompileBroker::invoke_compiler_on_method(CompileTask* task) { | |
1901 if (PrintCompilation) { | |
1902 ResourceMark rm; | |
1903 task->print_line(); | |
1904 } | |
1905 elapsedTimer time; | |
1906 | |
1907 CompilerThread* thread = CompilerThread::current(); | |
1908 ResourceMark rm(thread); | |
1909 | |
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1910 if (LogEvents) { |
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1911 _compilation_log->log_compile(thread, task); |
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1912 } |
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1913 |
0 | 1914 // Common flags. |
1915 uint compile_id = task->compile_id(); | |
1916 int osr_bci = task->osr_bci(); | |
1917 bool is_osr = (osr_bci != standard_entry_bci); | |
1918 bool should_log = (thread->log() != NULL); | |
1919 bool should_break = false; | |
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1920 int task_level = task->comp_level(); |
0 | 1921 { |
1922 // create the handle inside it's own block so it can't | |
1923 // accidentally be referenced once the thread transitions to | |
1924 // native. The NoHandleMark before the transition should catch | |
1925 // any cases where this occurs in the future. | |
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1926 methodHandle method(thread, task->method()); |
0 | 1927 should_break = check_break_at(method, compile_id, is_osr); |
1928 if (should_log && !CompilerOracle::should_log(method)) { | |
1929 should_log = false; | |
1930 } | |
1931 assert(!method->is_native(), "no longer compile natives"); | |
1932 | |
1933 // Save information about this method in case of failure. | |
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1934 set_last_compile(thread, method, is_osr, task_level); |
0 | 1935 |
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1936 DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, compiler_name(task_level)); |
0 | 1937 } |
1938 | |
1939 // Allocate a new set of JNI handles. | |
1940 push_jni_handle_block(); | |
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1941 Method* target_handle = task->method(); |
0 | 1942 int compilable = ciEnv::MethodCompilable; |
1943 { | |
1944 int system_dictionary_modification_counter; | |
1945 { | |
1946 MutexLocker locker(Compile_lock, thread); | |
1947 system_dictionary_modification_counter = SystemDictionary::number_of_modifications(); | |
1948 } | |
1949 | |
1950 NoHandleMark nhm; | |
1951 ThreadToNativeFromVM ttn(thread); | |
1952 | |
1953 ciEnv ci_env(task, system_dictionary_modification_counter); | |
1954 if (should_break) { | |
1955 ci_env.set_break_at_compile(true); | |
1956 } | |
1957 if (should_log) { | |
1958 ci_env.set_log(thread->log()); | |
1959 } | |
1960 assert(thread->env() == &ci_env, "set by ci_env"); | |
1961 // The thread-env() field is cleared in ~CompileTaskWrapper. | |
1962 | |
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1963 // Cache Jvmti state |
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1964 ci_env.cache_jvmti_state(); |
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1965 |
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1966 // Cache DTrace flags |
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1967 ci_env.cache_dtrace_flags(); |
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1968 |
0 | 1969 ciMethod* target = ci_env.get_method_from_handle(target_handle); |
1970 | |
1971 TraceTime t1("compilation", &time); | |
10405 | 1972 EventCompilation event; |
0 | 1973 |
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1974 AbstractCompiler *comp = compiler(task_level); |
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1975 if (comp == NULL) { |
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1976 ci_env.record_method_not_compilable("no compiler", !TieredCompilation); |
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1977 } else { |
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1978 comp->compile_method(&ci_env, target, osr_bci); |
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1979 } |
0 | 1980 |
1981 if (!ci_env.failing() && task->code() == NULL) { | |
1982 //assert(false, "compiler should always document failure"); | |
1983 // The compiler elected, without comment, not to register a result. | |
1984 // Do not attempt further compilations of this method. | |
1964
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1985 ci_env.record_method_not_compilable("compile failed", !TieredCompilation); |
0 | 1986 } |
1987 | |
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1988 // Copy this bit to the enclosing block: |
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1989 compilable = ci_env.compilable(); |
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1990 |
0 | 1991 if (ci_env.failing()) { |
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1992 task->set_failure_reason(ci_env.failure_reason()); |
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1993 const char* retry_message = ci_env.retry_message(); |
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1994 if (_compilation_log != NULL) { |
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1995 _compilation_log->log_failure(thread, task, ci_env.failure_reason(), retry_message); |
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1996 } |
0 | 1997 if (PrintCompilation) { |
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1998 FormatBufferResource msg = retry_message != NULL ? |
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1999 err_msg_res("COMPILE SKIPPED: %s (%s)", ci_env.failure_reason(), retry_message) : |
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2000 err_msg_res("COMPILE SKIPPED: %s", ci_env.failure_reason()); |
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2001 task->print_compilation(tty, msg); |
0 | 2002 } |
2003 } else { | |
2004 task->mark_success(); | |
2005 task->set_num_inlined_bytecodes(ci_env.num_inlined_bytecodes()); | |
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2006 if (_compilation_log != NULL) { |
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2007 nmethod* code = task->code(); |
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2008 if (code != NULL) { |
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2009 _compilation_log->log_nmethod(thread, code); |
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2010 } |
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2011 } |
0 | 2012 } |
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2013 // simulate crash during compilation |
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2014 assert(task->compile_id() != CICrashAt, "just as planned"); |
10405 | 2015 if (event.should_commit()) { |
2016 event.set_method(target->get_Method()); | |
2017 event.set_compileID(compile_id); | |
2018 event.set_compileLevel(task->comp_level()); | |
2019 event.set_succeded(task->is_success()); | |
2020 event.set_isOsr(is_osr); | |
2021 event.set_codeSize((task->code() == NULL) ? 0 : task->code()->total_size()); | |
2022 event.set_inlinedBytes(task->num_inlined_bytecodes()); | |
2023 event.commit(); | |
2024 } | |
0 | 2025 } |
2026 pop_jni_handle_block(); | |
2027 | |
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2028 methodHandle method(thread, task->method()); |
0 | 2029 |
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2030 DTRACE_METHOD_COMPILE_END_PROBE(method, compiler_name(task_level), task->is_success()); |
0 | 2031 |
2032 collect_statistics(thread, time, task); | |
2033 | |
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2034 if (PrintCompilation && PrintCompilation2) { |
4047 | 2035 tty->print("%7d ", (int) tty->time_stamp().milliseconds()); // print timestamp |
2036 tty->print("%4d ", compile_id); // print compilation number | |
2037 tty->print("%s ", (is_osr ? "%" : " ")); | |
10278 | 2038 if (task->code() != NULL) { |
2039 tty->print("size: %d(%d) ", task->code()->total_size(), task->code()->insts_size()); | |
2040 } | |
2041 tty->print_cr("time: %d inlined: %d bytes", (int)time.milliseconds(), task->num_inlined_bytecodes()); | |
4047 | 2042 } |
2043 | |
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2044 if (PrintCodeCacheOnCompilation) |
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2045 codecache_print(/* detailed= */ false); |
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2046 |
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2047 // Disable compilation, if required. |
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2048 switch (compilable) { |
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2049 case ciEnv::MethodCompilable_never: |
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2050 if (is_osr) |
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2051 method->set_not_osr_compilable_quietly(); |
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2052 else |
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2053 method->set_not_compilable_quietly(); |
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2054 break; |
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2055 case ciEnv::MethodCompilable_not_at_tier: |
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2056 if (is_osr) |
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2057 method->set_not_osr_compilable_quietly(task_level); |
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2058 else |
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2059 method->set_not_compilable_quietly(task_level); |
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2060 break; |
0 | 2061 } |
2062 | |
2063 // Note that the queued_for_compilation bits are cleared without | |
2064 // protection of a mutex. [They were set by the requester thread, | |
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2065 // when adding the task to the compile queue -- at which time the |
0 | 2066 // compile queue lock was held. Subsequently, we acquired the compile |
2067 // queue lock to get this task off the compile queue; thus (to belabour | |
2068 // the point somewhat) our clearing of the bits must be occurring | |
2069 // only after the setting of the bits. See also 14012000 above. | |
2070 method->clear_queued_for_compilation(); | |
2071 | |
2072 #ifdef ASSERT | |
2073 if (CollectedHeap::fired_fake_oom()) { | |
2074 // The current compile received a fake OOM during compilation so | |
2075 // go ahead and exit the VM since the test apparently succeeded | |
2076 tty->print_cr("*** Shutting down VM after successful fake OOM"); | |
2077 vm_exit(0); | |
2078 } | |
2079 #endif | |
2080 } | |
2081 | |
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2082 /** |
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2083 * The CodeCache is full. Print out warning and disable compilation |
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2084 * or try code cache cleaning so compilation can continue later. |
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2085 */ |
1202 | 2086 void CompileBroker::handle_full_code_cache() { |
2087 UseInterpreter = true; | |
2088 if (UseCompiler || AlwaysCompileLoopMethods ) { | |
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2089 if (xtty != NULL) { |
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2090 ResourceMark rm; |
2482
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2091 stringStream s; |
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2092 // Dump code cache state into a buffer before locking the tty, |
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2093 // because log_state() will use locks causing lock conflicts. |
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2094 CodeCache::log_state(&s); |
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2095 // Lock to prevent tearing |
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2096 ttyLocker ttyl; |
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2097 xtty->begin_elem("code_cache_full"); |
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2098 xtty->print("%s", s.as_string()); |
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2099 xtty->stamp(); |
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2100 xtty->end_elem(); |
1202 | 2101 } |
10405 | 2102 |
2103 CodeCache::report_codemem_full(); | |
2104 | |
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2105 #ifndef PRODUCT |
1202 | 2106 if (CompileTheWorld || ExitOnFullCodeCache) { |
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2107 codecache_print(/* detailed= */ true); |
1202 | 2108 before_exit(JavaThread::current()); |
2109 exit_globals(); // will delete tty | |
2110 vm_direct_exit(CompileTheWorld ? 0 : 1); | |
2111 } | |
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2112 #endif |
1202 | 2113 if (UseCodeCacheFlushing) { |
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2114 // Since code cache is full, immediately stop new compiles |
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2115 if (CompileBroker::set_should_compile_new_jobs(CompileBroker::stop_compilation)) { |
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2116 NMethodSweeper::log_sweep("disable_compiler"); |
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2117 } |
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2118 // Switch to 'vm_state'. This ensures that possibly_sweep() can be called |
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2119 // without having to consider the state in which the current thread is. |
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2120 ThreadInVMfromUnknown in_vm; |
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2121 NMethodSweeper::possibly_sweep(); |
1202 | 2122 } else { |
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2123 disable_compilation_forever(); |
1202 | 2124 } |
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2125 |
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2126 // Print warning only once |
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2127 if (should_print_compiler_warning()) { |
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2128 warning("CodeCache is full. Compiler has been disabled."); |
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2129 warning("Try increasing the code cache size using -XX:ReservedCodeCacheSize="); |
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2130 codecache_print(/* detailed= */ true); |
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2131 } |
1202 | 2132 } |
2133 } | |
2134 | |
2135 // ------------------------------------------------------------------ | |
0 | 2136 // CompileBroker::set_last_compile |
2137 // | |
2138 // Record this compilation for debugging purposes. | |
2139 void CompileBroker::set_last_compile(CompilerThread* thread, methodHandle method, bool is_osr, int comp_level) { | |
2140 ResourceMark rm; | |
2141 char* method_name = method->name()->as_C_string(); | |
2142 strncpy(_last_method_compiled, method_name, CompileBroker::name_buffer_length); | |
17567 | 2143 _last_method_compiled[CompileBroker::name_buffer_length - 1] = '\0'; // ensure null terminated |
0 | 2144 char current_method[CompilerCounters::cmname_buffer_length]; |
2145 size_t maxLen = CompilerCounters::cmname_buffer_length; | |
2146 | |
2147 if (UsePerfData) { | |
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2148 const char* class_name = method->method_holder()->name()->as_C_string(); |
0 | 2149 |
2150 size_t s1len = strlen(class_name); | |
2151 size_t s2len = strlen(method_name); | |
2152 | |
2153 // check if we need to truncate the string | |
2154 if (s1len + s2len + 2 > maxLen) { | |
2155 | |
2156 // the strategy is to lop off the leading characters of the | |
2157 // class name and the trailing characters of the method name. | |
2158 | |
2159 if (s2len + 2 > maxLen) { | |
2160 // lop of the entire class name string, let snprintf handle | |
2161 // truncation of the method name. | |
2162 class_name += s1len; // null string | |
2163 } | |
2164 else { | |
2165 // lop off the extra characters from the front of the class name | |
2166 class_name += ((s1len + s2len + 2) - maxLen); | |
2167 } | |
2168 } | |
2169 | |
2170 jio_snprintf(current_method, maxLen, "%s %s", class_name, method_name); | |
2171 } | |
2172 | |
2173 if (CICountOSR && is_osr) { | |
2174 _last_compile_type = osr_compile; | |
2175 } else { | |
2176 _last_compile_type = normal_compile; | |
2177 } | |
2178 _last_compile_level = comp_level; | |
2179 | |
2180 if (UsePerfData) { | |
2181 CompilerCounters* counters = thread->counters(); | |
2182 counters->set_current_method(current_method); | |
2183 counters->set_compile_type((jlong)_last_compile_type); | |
2184 } | |
2185 } | |
2186 | |
2187 | |
2188 // ------------------------------------------------------------------ | |
2189 // CompileBroker::push_jni_handle_block | |
2190 // | |
2191 // Push on a new block of JNI handles. | |
2192 void CompileBroker::push_jni_handle_block() { | |
2193 JavaThread* thread = JavaThread::current(); | |
2194 | |
2195 // Allocate a new block for JNI handles. | |
2196 // Inlined code from jni_PushLocalFrame() | |
2197 JNIHandleBlock* java_handles = thread->active_handles(); | |
2198 JNIHandleBlock* compile_handles = JNIHandleBlock::allocate_block(thread); | |
2199 assert(compile_handles != NULL && java_handles != NULL, "should not be NULL"); | |
2200 compile_handles->set_pop_frame_link(java_handles); // make sure java handles get gc'd. | |
2201 thread->set_active_handles(compile_handles); | |
2202 } | |
2203 | |
2204 | |
2205 // ------------------------------------------------------------------ | |
2206 // CompileBroker::pop_jni_handle_block | |
2207 // | |
2208 // Pop off the current block of JNI handles. | |
2209 void CompileBroker::pop_jni_handle_block() { | |
2210 JavaThread* thread = JavaThread::current(); | |
2211 | |
2212 // Release our JNI handle block | |
2213 JNIHandleBlock* compile_handles = thread->active_handles(); | |
2214 JNIHandleBlock* java_handles = compile_handles->pop_frame_link(); | |
2215 thread->set_active_handles(java_handles); | |
2216 compile_handles->set_pop_frame_link(NULL); | |
2217 JNIHandleBlock::release_block(compile_handles, thread); // may block | |
2218 } | |
2219 | |
2220 | |
2221 // ------------------------------------------------------------------ | |
2222 // CompileBroker::check_break_at | |
2223 // | |
2224 // Should the compilation break at the current compilation. | |
2225 bool CompileBroker::check_break_at(methodHandle method, int compile_id, bool is_osr) { | |
2226 if (CICountOSR && is_osr && (compile_id == CIBreakAtOSR)) { | |
2227 return true; | |
2228 } else if( CompilerOracle::should_break_at(method) ) { // break when compiling | |
2229 return true; | |
2230 } else { | |
2231 return (compile_id == CIBreakAt); | |
2232 } | |
2233 } | |
2234 | |
2235 // ------------------------------------------------------------------ | |
2236 // CompileBroker::collect_statistics | |
2237 // | |
2238 // Collect statistics about the compilation. | |
2239 | |
2240 void CompileBroker::collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task) { | |
2241 bool success = task->is_success(); | |
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2242 methodHandle method (thread, task->method()); |
0 | 2243 uint compile_id = task->compile_id(); |
2244 bool is_osr = (task->osr_bci() != standard_entry_bci); | |
2245 nmethod* code = task->code(); | |
2246 CompilerCounters* counters = thread->counters(); | |
2247 | |
2248 assert(code == NULL || code->is_locked_by_vm(), "will survive the MutexLocker"); | |
2249 MutexLocker locker(CompileStatistics_lock); | |
2250 | |
2251 // _perf variables are production performance counters which are | |
2252 // updated regardless of the setting of the CITime and CITimeEach flags | |
2253 // | |
2254 if (!success) { | |
2255 _total_bailout_count++; | |
2256 if (UsePerfData) { | |
2257 _perf_last_failed_method->set_value(counters->current_method()); | |
2258 _perf_last_failed_type->set_value(counters->compile_type()); | |
2259 _perf_total_bailout_count->inc(); | |
2260 } | |
2261 } else if (code == NULL) { | |
2262 if (UsePerfData) { | |
2263 _perf_last_invalidated_method->set_value(counters->current_method()); | |
2264 _perf_last_invalidated_type->set_value(counters->compile_type()); | |
2265 _perf_total_invalidated_count->inc(); | |
2266 } | |
2267 _total_invalidated_count++; | |
2268 } else { | |
2269 // Compilation succeeded | |
2270 | |
2271 // update compilation ticks - used by the implementation of | |
2272 // java.lang.management.CompilationMBean | |
2273 _perf_total_compilation->inc(time.ticks()); | |
2274 | |
10405 | 2275 _t_total_compilation.add(time); |
2276 _peak_compilation_time = time.milliseconds() > _peak_compilation_time ? time.milliseconds() : _peak_compilation_time; | |
2277 | |
0 | 2278 if (CITime) { |
2279 if (is_osr) { | |
2280 _t_osr_compilation.add(time); | |
2281 _sum_osr_bytes_compiled += method->code_size() + task->num_inlined_bytecodes(); | |
2282 } else { | |
2283 _t_standard_compilation.add(time); | |
2284 _sum_standard_bytes_compiled += method->code_size() + task->num_inlined_bytecodes(); | |
2285 } | |
2286 } | |
2287 | |
2288 if (UsePerfData) { | |
2289 // save the name of the last method compiled | |
2290 _perf_last_method->set_value(counters->current_method()); | |
2291 _perf_last_compile_type->set_value(counters->compile_type()); | |
2292 _perf_last_compile_size->set_value(method->code_size() + | |
2293 task->num_inlined_bytecodes()); | |
2294 if (is_osr) { | |
2295 _perf_osr_compilation->inc(time.ticks()); | |
2296 _perf_sum_osr_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes()); | |
2297 } else { | |
2298 _perf_standard_compilation->inc(time.ticks()); | |
2299 _perf_sum_standard_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes()); | |
2300 } | |
2301 } | |
2302 | |
2303 if (CITimeEach) { | |
2304 float bytes_per_sec = 1.0 * (method->code_size() + task->num_inlined_bytecodes()) / time.seconds(); | |
2305 tty->print_cr("%3d seconds: %f bytes/sec : %f (bytes %d + %d inlined)", | |
2306 compile_id, time.seconds(), bytes_per_sec, method->code_size(), task->num_inlined_bytecodes()); | |
2307 } | |
2308 | |
2309 // Collect counts of successful compilations | |
1748 | 2310 _sum_nmethod_size += code->total_size(); |
2311 _sum_nmethod_code_size += code->insts_size(); | |
0 | 2312 _total_compile_count++; |
2313 | |
2314 if (UsePerfData) { | |
1748 | 2315 _perf_sum_nmethod_size->inc( code->total_size()); |
2316 _perf_sum_nmethod_code_size->inc(code->insts_size()); | |
0 | 2317 _perf_total_compile_count->inc(); |
2318 } | |
2319 | |
2320 if (is_osr) { | |
2321 if (UsePerfData) _perf_total_osr_compile_count->inc(); | |
2322 _total_osr_compile_count++; | |
2323 } else { | |
2324 if (UsePerfData) _perf_total_standard_compile_count->inc(); | |
2325 _total_standard_compile_count++; | |
2326 } | |
2327 } | |
2328 // set the current method for the thread to null | |
2329 if (UsePerfData) counters->set_current_method(""); | |
2330 } | |
2331 | |
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2332 const char* CompileBroker::compiler_name(int comp_level) { |
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2333 AbstractCompiler *comp = CompileBroker::compiler(comp_level); |
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2334 if (comp == NULL) { |
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2335 return "no compiler"; |
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2336 } else { |
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2337 return (comp->name()); |
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2338 } |
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2339 } |
0 | 2340 |
2341 void CompileBroker::print_times() { | |
2342 tty->cr(); | |
2343 tty->print_cr("Accumulated compiler times (for compiled methods only)"); | |
2344 tty->print_cr("------------------------------------------------"); | |
2345 //0000000000111111111122222222223333333333444444444455555555556666666666 | |
2346 //0123456789012345678901234567890123456789012345678901234567890123456789 | |
2347 tty->print_cr(" Total compilation time : %6.3f s", CompileBroker::_t_total_compilation.seconds()); | |
2348 tty->print_cr(" Standard compilation : %6.3f s, Average : %2.3f", | |
2349 CompileBroker::_t_standard_compilation.seconds(), | |
2350 CompileBroker::_t_standard_compilation.seconds() / CompileBroker::_total_standard_compile_count); | |
2351 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 | 2352 |
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2353 AbstractCompiler *comp = compiler(CompLevel_simple); |
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2354 if (comp != NULL) { |
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2355 comp->print_timers(); |
0 | 2356 } |
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2357 comp = compiler(CompLevel_full_optimization); |
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2358 if (comp != NULL) { |
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2359 comp->print_timers(); |
1783 | 2360 } |
0 | 2361 tty->cr(); |
8860 | 2362 tty->print_cr(" Total compiled methods : %6d methods", CompileBroker::_total_compile_count); |
2363 tty->print_cr(" Standard compilation : %6d methods", CompileBroker::_total_standard_compile_count); | |
2364 tty->print_cr(" On stack replacement : %6d methods", CompileBroker::_total_osr_compile_count); | |
0 | 2365 int tcb = CompileBroker::_sum_osr_bytes_compiled + CompileBroker::_sum_standard_bytes_compiled; |
2366 tty->print_cr(" Total compiled bytecodes : %6d bytes", tcb); | |
2367 tty->print_cr(" Standard compilation : %6d bytes", CompileBroker::_sum_standard_bytes_compiled); | |
2368 tty->print_cr(" On stack replacement : %6d bytes", CompileBroker::_sum_osr_bytes_compiled); | |
2369 int bps = (int)(tcb / CompileBroker::_t_total_compilation.seconds()); | |
2370 tty->print_cr(" Average compilation speed: %6d bytes/s", bps); | |
2371 tty->cr(); | |
2372 tty->print_cr(" nmethod code size : %6d bytes", CompileBroker::_sum_nmethod_code_size); | |
2373 tty->print_cr(" nmethod total size : %6d bytes", CompileBroker::_sum_nmethod_size); | |
2374 } | |
2375 | |
2376 // Debugging output for failure | |
2377 void CompileBroker::print_last_compile() { | |
2378 if ( _last_compile_level != CompLevel_none && | |
2379 compiler(_last_compile_level) != NULL && | |
2380 _last_method_compiled != NULL && | |
2381 _last_compile_type != no_compile) { | |
2382 if (_last_compile_type == osr_compile) { | |
2383 tty->print_cr("Last parse: [osr]%d+++(%d) %s", | |
2384 _osr_compilation_id, _last_compile_level, _last_method_compiled); | |
2385 } else { | |
2386 tty->print_cr("Last parse: %d+++(%d) %s", | |
2387 _compilation_id, _last_compile_level, _last_method_compiled); | |
2388 } | |
2389 } | |
2390 } | |
2391 | |
2392 | |
2393 void CompileBroker::print_compiler_threads_on(outputStream* st) { | |
2394 #ifndef PRODUCT | |
2395 st->print_cr("Compiler thread printing unimplemented."); | |
2396 st->cr(); | |
2397 #endif | |
2398 } |