Mercurial > hg > truffle
annotate src/share/vm/compiler/compileBroker.cpp @ 13725:8d8732e14447
Refactor reference maps.
author | Roland Schatz <roland.schatz@oracle.com> |
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date | Wed, 22 Jan 2014 11:27:28 +0100 |
parents | 5a4293f24642 |
children | 9161ed8ce796 |
rev | line source |
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0 | 1 /* |
10405 | 2 * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/systemDictionary.hpp" | |
27 #include "classfile/vmSymbols.hpp" | |
28 #include "code/codeCache.hpp" | |
29 #include "compiler/compileBroker.hpp" | |
30 #include "compiler/compileLog.hpp" | |
31 #include "compiler/compilerOracle.hpp" | |
32 #include "interpreter/linkResolver.hpp" | |
33 #include "memory/allocation.inline.hpp" | |
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34 #include "oops/methodData.hpp" |
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35 #include "oops/method.hpp" |
1972 | 36 #include "oops/oop.inline.hpp" |
37 #include "prims/nativeLookup.hpp" | |
38 #include "runtime/arguments.hpp" | |
39 #include "runtime/compilationPolicy.hpp" | |
40 #include "runtime/init.hpp" | |
41 #include "runtime/interfaceSupport.hpp" | |
42 #include "runtime/javaCalls.hpp" | |
43 #include "runtime/os.hpp" | |
44 #include "runtime/sharedRuntime.hpp" | |
45 #include "runtime/sweeper.hpp" | |
10405 | 46 #include "trace/tracing.hpp" |
1972 | 47 #include "utilities/dtrace.hpp" |
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48 #include "utilities/events.hpp" |
1972 | 49 #ifdef COMPILER1 |
50 #include "c1/c1_Compiler.hpp" | |
51 #endif | |
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52 #ifdef GRAAL |
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53 #include "graal/graalCompiler.hpp" |
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54 #endif |
1972 | 55 #ifdef COMPILER2 |
56 #include "opto/c2compiler.hpp" | |
57 #endif | |
58 #ifdef SHARK | |
59 #include "shark/sharkCompiler.hpp" | |
60 #endif | |
0 | 61 |
62 #ifdef DTRACE_ENABLED | |
63 | |
64 // Only bother with this argument setup if dtrace is available | |
65 | |
4006 | 66 #ifndef USDT2 |
0 | 67 HS_DTRACE_PROBE_DECL8(hotspot, method__compile__begin, |
68 char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t); | |
69 HS_DTRACE_PROBE_DECL9(hotspot, method__compile__end, | |
70 char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t, bool); | |
71 | |
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72 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, comp_name) \ |
0 | 73 { \ |
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74 Symbol* klass_name = (method)->klass_name(); \ |
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75 Symbol* name = (method)->name(); \ |
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76 Symbol* signature = (method)->signature(); \ |
0 | 77 HS_DTRACE_PROBE8(hotspot, method__compile__begin, \ |
78 comp_name, strlen(comp_name), \ | |
79 klass_name->bytes(), klass_name->utf8_length(), \ | |
80 name->bytes(), name->utf8_length(), \ | |
81 signature->bytes(), signature->utf8_length()); \ | |
82 } | |
83 | |
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84 #define DTRACE_METHOD_COMPILE_END_PROBE(method, comp_name, success) \ |
0 | 85 { \ |
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86 Symbol* klass_name = (method)->klass_name(); \ |
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87 Symbol* name = (method)->name(); \ |
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88 Symbol* signature = (method)->signature(); \ |
0 | 89 HS_DTRACE_PROBE9(hotspot, method__compile__end, \ |
90 comp_name, strlen(comp_name), \ | |
91 klass_name->bytes(), klass_name->utf8_length(), \ | |
92 name->bytes(), name->utf8_length(), \ | |
93 signature->bytes(), signature->utf8_length(), (success)); \ | |
94 } | |
95 | |
4006 | 96 #else /* USDT2 */ |
97 | |
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98 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, comp_name) \ |
4006 | 99 { \ |
100 Symbol* klass_name = (method)->klass_name(); \ | |
101 Symbol* name = (method)->name(); \ | |
102 Symbol* signature = (method)->signature(); \ | |
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103 HOTSPOT_METHOD_COMPILE_BEGIN( \ |
4006 | 104 comp_name, strlen(comp_name), \ |
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105 (char *) klass_name->bytes(), klass_name->utf8_length(), \ |
4006 | 106 (char *) name->bytes(), name->utf8_length(), \ |
107 (char *) signature->bytes(), signature->utf8_length()); \ | |
108 } | |
109 | |
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110 #define DTRACE_METHOD_COMPILE_END_PROBE(method, comp_name, success) \ |
4006 | 111 { \ |
112 Symbol* klass_name = (method)->klass_name(); \ | |
113 Symbol* name = (method)->name(); \ | |
114 Symbol* signature = (method)->signature(); \ | |
115 HOTSPOT_METHOD_COMPILE_END( \ | |
116 comp_name, strlen(comp_name), \ | |
117 (char *) klass_name->bytes(), klass_name->utf8_length(), \ | |
118 (char *) name->bytes(), name->utf8_length(), \ | |
119 (char *) signature->bytes(), signature->utf8_length(), (success)); \ | |
120 } | |
121 #endif /* USDT2 */ | |
122 | |
0 | 123 #else // ndef DTRACE_ENABLED |
124 | |
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125 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, comp_name) |
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126 #define DTRACE_METHOD_COMPILE_END_PROBE(method, comp_name, success) |
0 | 127 |
128 #endif // ndef DTRACE_ENABLED | |
129 | |
130 bool CompileBroker::_initialized = false; | |
131 volatile bool CompileBroker::_should_block = false; | |
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132 volatile jint CompileBroker::_print_compilation_warning = 0; |
1202 | 133 volatile jint CompileBroker::_should_compile_new_jobs = run_compilation; |
0 | 134 |
135 // The installed compiler(s) | |
136 AbstractCompiler* CompileBroker::_compilers[2]; | |
137 | |
138 // These counters are used for assigning id's to each compilation | |
139 uint CompileBroker::_compilation_id = 0; | |
140 uint CompileBroker::_osr_compilation_id = 0; | |
141 | |
142 // Debugging information | |
143 int CompileBroker::_last_compile_type = no_compile; | |
144 int CompileBroker::_last_compile_level = CompLevel_none; | |
145 char CompileBroker::_last_method_compiled[CompileBroker::name_buffer_length]; | |
146 | |
147 // Performance counters | |
148 PerfCounter* CompileBroker::_perf_total_compilation = NULL; | |
149 PerfCounter* CompileBroker::_perf_osr_compilation = NULL; | |
150 PerfCounter* CompileBroker::_perf_standard_compilation = NULL; | |
151 | |
152 PerfCounter* CompileBroker::_perf_total_bailout_count = NULL; | |
153 PerfCounter* CompileBroker::_perf_total_invalidated_count = NULL; | |
154 PerfCounter* CompileBroker::_perf_total_compile_count = NULL; | |
155 PerfCounter* CompileBroker::_perf_total_osr_compile_count = NULL; | |
156 PerfCounter* CompileBroker::_perf_total_standard_compile_count = NULL; | |
157 | |
158 PerfCounter* CompileBroker::_perf_sum_osr_bytes_compiled = NULL; | |
159 PerfCounter* CompileBroker::_perf_sum_standard_bytes_compiled = NULL; | |
160 PerfCounter* CompileBroker::_perf_sum_nmethod_size = NULL; | |
161 PerfCounter* CompileBroker::_perf_sum_nmethod_code_size = NULL; | |
162 | |
163 PerfStringVariable* CompileBroker::_perf_last_method = NULL; | |
164 PerfStringVariable* CompileBroker::_perf_last_failed_method = NULL; | |
165 PerfStringVariable* CompileBroker::_perf_last_invalidated_method = NULL; | |
166 PerfVariable* CompileBroker::_perf_last_compile_type = NULL; | |
167 PerfVariable* CompileBroker::_perf_last_compile_size = NULL; | |
168 PerfVariable* CompileBroker::_perf_last_failed_type = NULL; | |
169 PerfVariable* CompileBroker::_perf_last_invalidated_type = NULL; | |
170 | |
171 // Timers and counters for generating statistics | |
172 elapsedTimer CompileBroker::_t_total_compilation; | |
173 elapsedTimer CompileBroker::_t_osr_compilation; | |
174 elapsedTimer CompileBroker::_t_standard_compilation; | |
175 | |
176 int CompileBroker::_total_bailout_count = 0; | |
177 int CompileBroker::_total_invalidated_count = 0; | |
178 int CompileBroker::_total_compile_count = 0; | |
179 int CompileBroker::_total_osr_compile_count = 0; | |
180 int CompileBroker::_total_standard_compile_count = 0; | |
181 | |
182 int CompileBroker::_sum_osr_bytes_compiled = 0; | |
183 int CompileBroker::_sum_standard_bytes_compiled = 0; | |
184 int CompileBroker::_sum_nmethod_size = 0; | |
185 int CompileBroker::_sum_nmethod_code_size = 0; | |
186 | |
10405 | 187 long CompileBroker::_peak_compilation_time = 0; |
188 | |
189 CompileQueue* CompileBroker::_c2_method_queue = NULL; | |
190 CompileQueue* CompileBroker::_c1_method_queue = NULL; | |
191 CompileTask* CompileBroker::_task_free_list = NULL; | |
0 | 192 |
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193 GrowableArray<CompilerThread*>* CompileBroker::_compiler_threads = NULL; |
0 | 194 |
195 | |
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196 class CompilationLog : public StringEventLog { |
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197 public: |
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198 CompilationLog() : StringEventLog("Compilation events") { |
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199 } |
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200 |
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201 void log_compile(JavaThread* thread, CompileTask* task) { |
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202 StringLogMessage lm; |
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203 stringStream sstr = lm.stream(); |
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204 // msg.time_stamp().update_to(tty->time_stamp().ticks()); |
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205 task->print_compilation(&sstr, NULL, true); |
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206 log(thread, "%s", (const char*)lm); |
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207 } |
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208 |
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209 void log_nmethod(JavaThread* thread, nmethod* nm) { |
4944 | 210 log(thread, "nmethod %d%s " INTPTR_FORMAT " code ["INTPTR_FORMAT ", " INTPTR_FORMAT "]", |
211 nm->compile_id(), nm->is_osr_method() ? "%" : "", | |
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212 nm, nm->code_begin(), nm->code_end()); |
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213 } |
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214 |
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215 void log_failure(JavaThread* thread, CompileTask* task, const char* reason, const char* retry_message) { |
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216 StringLogMessage lm; |
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217 lm.print("%4d COMPILE SKIPPED: %s", task->compile_id(), reason); |
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218 if (retry_message != NULL) { |
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219 lm.append(" (%s)", retry_message); |
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220 } |
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221 lm.print("\n"); |
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222 log(thread, "%s", (const char*)lm); |
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223 } |
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224 }; |
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225 |
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226 static CompilationLog* _compilation_log = NULL; |
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227 |
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228 void compileBroker_init() { |
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229 if (LogEvents) { |
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230 _compilation_log = new CompilationLog(); |
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231 } |
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232 } |
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233 |
0 | 234 CompileTaskWrapper::CompileTaskWrapper(CompileTask* task) { |
235 CompilerThread* thread = CompilerThread::current(); | |
236 thread->set_task(task); | |
237 CompileLog* log = thread->log(); | |
238 if (log != NULL) task->log_task_start(log); | |
239 } | |
240 | |
241 CompileTaskWrapper::~CompileTaskWrapper() { | |
242 CompilerThread* thread = CompilerThread::current(); | |
243 CompileTask* task = thread->task(); | |
244 CompileLog* log = thread->log(); | |
245 if (log != NULL) task->log_task_done(log); | |
246 thread->set_task(NULL); | |
247 task->set_code_handle(NULL); | |
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248 thread->set_env(NULL); |
0 | 249 if (task->is_blocking()) { |
250 MutexLocker notifier(task->lock(), thread); | |
251 task->mark_complete(); | |
252 // Notify the waiting thread that the compilation has completed. | |
253 task->lock()->notify_all(); | |
254 } else { | |
255 task->mark_complete(); | |
256 | |
257 // By convention, the compiling thread is responsible for | |
258 // recycling a non-blocking CompileTask. | |
259 CompileBroker::free_task(task); | |
260 } | |
261 } | |
262 | |
263 | |
264 // ------------------------------------------------------------------ | |
265 // CompileTask::initialize | |
266 void CompileTask::initialize(int compile_id, | |
267 methodHandle method, | |
268 int osr_bci, | |
269 int comp_level, | |
270 methodHandle hot_method, | |
271 int hot_count, | |
272 const char* comment, | |
273 bool is_blocking) { | |
274 assert(!_lock->is_locked(), "bad locking"); | |
275 | |
276 _compile_id = compile_id; | |
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277 _method = method(); |
7409 | 278 _method_holder = JNIHandles::make_global(method->method_holder()->klass_holder()); |
0 | 279 _osr_bci = osr_bci; |
280 _is_blocking = is_blocking; | |
281 _comp_level = comp_level; | |
282 _num_inlined_bytecodes = 0; | |
283 | |
284 _is_complete = false; | |
285 _is_success = false; | |
286 _code_handle = NULL; | |
287 | |
288 _hot_method = NULL; | |
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289 _hot_method_holder = NULL; |
0 | 290 _hot_count = hot_count; |
291 _time_queued = 0; // tidy | |
292 _comment = comment; | |
293 | |
294 if (LogCompilation) { | |
295 _time_queued = os::elapsed_counter(); | |
296 if (hot_method.not_null()) { | |
297 if (hot_method == method) { | |
298 _hot_method = _method; | |
299 } else { | |
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300 _hot_method = hot_method(); |
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301 // only add loader or mirror if different from _method_holder |
7409 | 302 _hot_method_holder = JNIHandles::make_global(hot_method->method_holder()->klass_holder()); |
0 | 303 } |
304 } | |
305 } | |
306 | |
307 _next = NULL; | |
308 } | |
309 | |
310 // ------------------------------------------------------------------ | |
311 // CompileTask::code/set_code | |
312 nmethod* CompileTask::code() const { | |
313 if (_code_handle == NULL) return NULL; | |
314 return _code_handle->code(); | |
315 } | |
316 void CompileTask::set_code(nmethod* nm) { | |
317 if (_code_handle == NULL && nm == NULL) return; | |
318 guarantee(_code_handle != NULL, ""); | |
319 _code_handle->set_code(nm); | |
320 if (nm == NULL) _code_handle = NULL; // drop the handle also | |
321 } | |
322 | |
323 // ------------------------------------------------------------------ | |
324 // CompileTask::free | |
325 void CompileTask::free() { | |
326 set_code(NULL); | |
327 assert(!_lock->is_locked(), "Should not be locked when freed"); | |
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328 JNIHandles::destroy_global(_method_holder); |
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329 JNIHandles::destroy_global(_hot_method_holder); |
0 | 330 } |
331 | |
332 | |
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333 void CompileTask::mark_on_stack() { |
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334 // Mark these methods as something redefine classes cannot remove. |
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335 _method->set_on_stack(true); |
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336 if (_hot_method != NULL) { |
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337 _hot_method->set_on_stack(true); |
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338 } |
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339 } |
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340 |
0 | 341 // ------------------------------------------------------------------ |
342 // CompileTask::print | |
343 void CompileTask::print() { | |
344 tty->print("<CompileTask compile_id=%d ", _compile_id); | |
345 tty->print("method="); | |
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346 _method->print_name(tty); |
0 | 347 tty->print_cr(" osr_bci=%d is_blocking=%s is_complete=%s is_success=%s>", |
348 _osr_bci, bool_to_str(_is_blocking), | |
349 bool_to_str(_is_complete), bool_to_str(_is_success)); | |
350 } | |
351 | |
1783 | 352 |
0 | 353 // ------------------------------------------------------------------ |
354 // CompileTask::print_line_on_error | |
355 // | |
356 // This function is called by fatal error handler when the thread | |
357 // causing troubles is a compiler thread. | |
358 // | |
359 // Do not grab any lock, do not allocate memory. | |
360 // | |
361 // Otherwise it's the same as CompileTask::print_line() | |
362 // | |
363 void CompileTask::print_line_on_error(outputStream* st, char* buf, int buflen) { | |
364 // print compiler name | |
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365 st->print("%s:", CompileBroker::compiler_name(comp_level())); |
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366 print_compilation(st); |
0 | 367 } |
368 | |
369 // ------------------------------------------------------------------ | |
370 // CompileTask::print_line | |
371 void CompileTask::print_line() { | |
372 ttyLocker ttyl; // keep the following output all in one block | |
373 // print compiler name if requested | |
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374 if (CIPrintCompilerName) tty->print("%s:", CompileBroker::compiler_name(comp_level())); |
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375 print_compilation(); |
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376 } |
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377 |
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378 |
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379 // ------------------------------------------------------------------ |
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380 // CompileTask::print_compilation_impl |
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381 void CompileTask::print_compilation_impl(outputStream* st, Method* method, int compile_id, int comp_level, |
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382 bool is_osr_method, int osr_bci, bool is_blocking, |
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383 const char* msg, bool short_form) { |
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384 if (!short_form) { |
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385 st->print("%7d ", (int) st->time_stamp().milliseconds()); // print timestamp |
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386 } |
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387 st->print("%4d ", compile_id); // print compilation number |
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388 |
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389 // For unloaded methods the transition to zombie occurs after the |
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390 // method is cleared so it's impossible to report accurate |
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391 // information for that case. |
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392 bool is_synchronized = false; |
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393 bool has_exception_handler = false; |
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394 bool is_native = false; |
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395 if (method != NULL) { |
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396 is_synchronized = method->is_synchronized(); |
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397 has_exception_handler = method->has_exception_handler(); |
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398 is_native = method->is_native(); |
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399 } |
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400 // method attributes |
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401 const char compile_type = is_osr_method ? '%' : ' '; |
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402 const char sync_char = is_synchronized ? 's' : ' '; |
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403 const char exception_char = has_exception_handler ? '!' : ' '; |
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404 const char blocking_char = is_blocking ? 'b' : ' '; |
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405 const char native_char = is_native ? 'n' : ' '; |
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406 |
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407 // print method attributes |
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408 st->print("%c%c%c%c%c ", compile_type, sync_char, exception_char, blocking_char, native_char); |
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409 |
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410 if (TieredCompilation) { |
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411 if (comp_level != -1) st->print("%d ", comp_level); |
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412 else st->print("- "); |
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413 } |
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414 st->print(" "); // more indent |
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415 |
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416 if (method == NULL) { |
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417 st->print("(method)"); |
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418 } else { |
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419 method->print_short_name(st); |
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420 if (is_osr_method) { |
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421 st->print(" @ %d", osr_bci); |
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422 } |
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423 if (method->is_native()) |
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424 st->print(" (native)"); |
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425 else |
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426 st->print(" (%d bytes)", method->code_size()); |
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427 } |
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428 |
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429 if (msg != NULL) { |
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430 st->print(" %s", msg); |
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431 } |
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432 if (!short_form) { |
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433 st->cr(); |
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434 } |
0 | 435 } |
436 | |
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437 // ------------------------------------------------------------------ |
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438 // CompileTask::print_inlining |
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439 void CompileTask::print_inlining(outputStream* st, ciMethod* method, int inline_level, int bci, const char* msg) { |
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440 // 1234567 |
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441 st->print(" "); // print timestamp |
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442 // 1234 |
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443 st->print(" "); // print compilation number |
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444 |
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445 // method attributes |
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446 if (method->is_loaded()) { |
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447 const char sync_char = method->is_synchronized() ? 's' : ' '; |
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448 const char exception_char = method->has_exception_handlers() ? '!' : ' '; |
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449 const char monitors_char = method->has_monitor_bytecodes() ? 'm' : ' '; |
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450 |
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451 // print method attributes |
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452 st->print(" %c%c%c ", sync_char, exception_char, monitors_char); |
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453 } else { |
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454 // %s!bn |
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455 st->print(" "); // print method attributes |
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456 } |
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457 |
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458 if (TieredCompilation) { |
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459 st->print(" "); |
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460 } |
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461 st->print(" "); // more indent |
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462 st->print(" "); // initial inlining indent |
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463 |
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464 for (int i = 0; i < inline_level; i++) st->print(" "); |
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465 |
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466 st->print("@ %d ", bci); // print bci |
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467 method->print_short_name(st); |
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468 if (method->is_loaded()) |
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469 st->print(" (%d bytes)", method->code_size()); |
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470 else |
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471 st->print(" (not loaded)"); |
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472 |
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473 if (msg != NULL) { |
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474 st->print(" %s", msg); |
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475 } |
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476 st->cr(); |
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477 } |
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478 |
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479 // ------------------------------------------------------------------ |
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480 // CompileTask::print_inline_indent |
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481 void CompileTask::print_inline_indent(int inline_level, outputStream* st) { |
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482 // 1234567 |
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483 st->print(" "); // print timestamp |
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484 // 1234 |
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485 st->print(" "); // print compilation number |
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486 // %s!bn |
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487 st->print(" "); // print method attributes |
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488 if (TieredCompilation) { |
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489 st->print(" "); |
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490 } |
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491 st->print(" "); // more indent |
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492 st->print(" "); // initial inlining indent |
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493 for (int i = 0; i < inline_level; i++) st->print(" "); |
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494 } |
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495 |
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496 // ------------------------------------------------------------------ |
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497 // CompileTask::print_compilation |
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498 void CompileTask::print_compilation(outputStream* st, const char* msg, bool short_form) { |
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499 bool is_osr_method = osr_bci() != InvocationEntryBci; |
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500 print_compilation_impl(st, method(), compile_id(), comp_level(), is_osr_method, osr_bci(), is_blocking(), msg, short_form); |
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501 } |
0 | 502 |
503 // ------------------------------------------------------------------ | |
504 // CompileTask::log_task | |
505 void CompileTask::log_task(xmlStream* log) { | |
506 Thread* thread = Thread::current(); | |
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507 methodHandle method(thread, this->method()); |
0 | 508 ResourceMark rm(thread); |
509 | |
510 // <task id='9' method='M' osr_bci='X' level='1' blocking='1' stamp='1.234'> | |
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511 log->print(" compile_id='%d'", _compile_id); |
0 | 512 if (_osr_bci != CompileBroker::standard_entry_bci) { |
513 log->print(" compile_kind='osr'"); // same as nmethod::compile_kind | |
514 } // else compile_kind='c2c' | |
515 if (!method.is_null()) log->method(method); | |
516 if (_osr_bci != CompileBroker::standard_entry_bci) { | |
517 log->print(" osr_bci='%d'", _osr_bci); | |
518 } | |
519 if (_comp_level != CompLevel_highest_tier) { | |
520 log->print(" level='%d'", _comp_level); | |
521 } | |
522 if (_is_blocking) { | |
523 log->print(" blocking='1'"); | |
524 } | |
525 log->stamp(); | |
526 } | |
527 | |
528 | |
529 // ------------------------------------------------------------------ | |
530 // CompileTask::log_task_queued | |
531 void CompileTask::log_task_queued() { | |
532 Thread* thread = Thread::current(); | |
533 ttyLocker ttyl; | |
534 ResourceMark rm(thread); | |
535 | |
536 xtty->begin_elem("task_queued"); | |
537 log_task(xtty); | |
538 if (_comment != NULL) { | |
539 xtty->print(" comment='%s'", _comment); | |
540 } | |
541 if (_hot_method != NULL) { | |
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542 methodHandle hot(thread, _hot_method); |
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543 methodHandle method(thread, _method); |
0 | 544 if (hot() != method()) { |
545 xtty->method(hot); | |
546 } | |
547 } | |
548 if (_hot_count != 0) { | |
549 xtty->print(" hot_count='%d'", _hot_count); | |
550 } | |
551 xtty->end_elem(); | |
552 } | |
553 | |
554 | |
555 // ------------------------------------------------------------------ | |
556 // CompileTask::log_task_start | |
557 void CompileTask::log_task_start(CompileLog* log) { | |
558 log->begin_head("task"); | |
559 log_task(log); | |
560 log->end_head(); | |
561 } | |
562 | |
563 | |
564 // ------------------------------------------------------------------ | |
565 // CompileTask::log_task_done | |
566 void CompileTask::log_task_done(CompileLog* log) { | |
567 Thread* thread = Thread::current(); | |
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568 methodHandle method(thread, this->method()); |
0 | 569 ResourceMark rm(thread); |
570 | |
571 // <task_done ... stamp='1.234'> </task> | |
572 nmethod* nm = code(); | |
573 log->begin_elem("task_done success='%d' nmsize='%d' count='%d'", | |
1748 | 574 _is_success, nm == NULL ? 0 : nm->content_size(), |
0 | 575 method->invocation_count()); |
576 int bec = method->backedge_count(); | |
577 if (bec != 0) log->print(" backedge_count='%d'", bec); | |
578 // Note: "_is_complete" is about to be set, but is not. | |
579 if (_num_inlined_bytecodes != 0) { | |
580 log->print(" inlined_bytes='%d'", _num_inlined_bytecodes); | |
581 } | |
582 log->stamp(); | |
583 log->end_elem(); | |
584 log->tail("task"); | |
585 log->clear_identities(); // next task will have different CI | |
586 if (log->unflushed_count() > 2000) { | |
587 log->flush(); | |
588 } | |
589 log->mark_file_end(); | |
590 } | |
591 | |
592 | |
593 | |
594 // Add a CompileTask to a CompileQueue | |
595 void CompileQueue::add(CompileTask* task) { | |
596 assert(lock()->owned_by_self(), "must own lock"); | |
597 | |
598 task->set_next(NULL); | |
1783 | 599 task->set_prev(NULL); |
0 | 600 |
601 if (_last == NULL) { | |
602 // The compile queue is empty. | |
603 assert(_first == NULL, "queue is empty"); | |
604 _first = task; | |
605 _last = task; | |
606 } else { | |
607 // Append the task to the queue. | |
608 assert(_last->next() == NULL, "not last"); | |
609 _last->set_next(task); | |
1783 | 610 task->set_prev(_last); |
0 | 611 _last = task; |
612 } | |
1783 | 613 ++_size; |
0 | 614 |
615 // Mark the method as being in the compile queue. | |
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616 task->method()->set_queued_for_compilation(); |
0 | 617 |
618 if (CIPrintCompileQueue) { | |
619 print(); | |
620 } | |
621 | |
622 if (LogCompilation && xtty != NULL) { | |
623 task->log_task_queued(); | |
624 } | |
625 | |
626 // Notify CompilerThreads that a task is available. | |
1783 | 627 lock()->notify_all(); |
0 | 628 } |
629 | |
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630 void CompileQueue::delete_all() { |
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631 assert(lock()->owned_by_self(), "must own lock"); |
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632 if (_first != NULL) { |
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633 for (CompileTask* task = _first; task != NULL; task = task->next()) { |
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634 delete task; |
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635 } |
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636 _first = NULL; |
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637 } |
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638 } |
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639 |
0 | 640 // ------------------------------------------------------------------ |
641 // CompileQueue::get | |
642 // | |
643 // Get the next CompileTask from a CompileQueue | |
644 CompileTask* CompileQueue::get() { | |
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645 NMethodSweeper::possibly_sweep(); |
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646 |
0 | 647 MutexLocker locker(lock()); |
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648 // If _first is NULL we have no more compile jobs. There are two reasons for |
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649 // having no compile jobs: First, we compiled everything we wanted. Second, |
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650 // we ran out of code cache so compilation has been disabled. In the latter |
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651 // case we perform code cache sweeps to free memory such that we can re-enable |
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652 // compilation. |
0 | 653 while (_first == NULL) { |
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654 // Exit loop if compilation is disabled forever |
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655 if (CompileBroker::is_compilation_disabled_forever()) { |
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656 return NULL; |
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657 } |
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658 |
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659 if (UseCodeCacheFlushing && !CompileBroker::should_compile_new_jobs()) { |
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660 // Wait a certain amount of time to possibly do another sweep. |
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661 // We must wait until stack scanning has happened so that we can |
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662 // transition a method's state from 'not_entrant' to 'zombie'. |
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663 long wait_time = NmethodSweepCheckInterval * 1000; |
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664 if (FLAG_IS_DEFAULT(NmethodSweepCheckInterval)) { |
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665 // Only one thread at a time can do sweeping. Scale the |
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666 // wait time according to the number of compiler threads. |
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667 // As a result, the next sweep is likely to happen every 100ms |
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668 // with an arbitrary number of threads that do sweeping. |
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669 wait_time = 100 * CICompilerCount; |
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670 } |
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671 bool timeout = lock()->wait(!Mutex::_no_safepoint_check_flag, wait_time); |
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672 if (timeout) { |
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673 MutexUnlocker ul(lock()); |
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674 NMethodSweeper::possibly_sweep(); |
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675 } |
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676 } else { |
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677 // If there are no compilation tasks and we can compile new jobs |
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678 // (i.e., there is enough free space in the code cache) there is |
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679 // no need to invoke the sweeper. As a result, the hotness of methods |
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680 // remains unchanged. This behavior is desired, since we want to keep |
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681 // the stable state, i.e., we do not want to evict methods from the |
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682 // code cache if it is unnecessary. |
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683 // We need a timed wait here, since compiler threads can exit if compilation |
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684 // is disabled forever. We use 5 seconds wait time; the exiting of compiler threads |
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685 // is not critical and we do not want idle compiler threads to wake up too often. |
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686 lock()->wait(!Mutex::_no_safepoint_check_flag, 5*1000); |
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687 } |
0 | 688 } |
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689 |
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690 if (CompileBroker::is_compilation_disabled_forever()) { |
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691 return NULL; |
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692 } |
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693 |
1783 | 694 CompileTask* task = CompilationPolicy::policy()->select_task(this); |
695 remove(task); | |
696 return task; | |
697 } | |
0 | 698 |
1783 | 699 void CompileQueue::remove(CompileTask* task) |
700 { | |
701 assert(lock()->owned_by_self(), "must own lock"); | |
702 if (task->prev() != NULL) { | |
703 task->prev()->set_next(task->next()); | |
704 } else { | |
705 // max is the first element | |
706 assert(task == _first, "Sanity"); | |
707 _first = task->next(); | |
0 | 708 } |
709 | |
1783 | 710 if (task->next() != NULL) { |
711 task->next()->set_prev(task->prev()); | |
712 } else { | |
713 // max is the last element | |
714 assert(task == _last, "Sanity"); | |
715 _last = task->prev(); | |
716 } | |
717 --_size; | |
0 | 718 } |
719 | |
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720 // methods in the compile queue need to be marked as used on the stack |
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721 // so that they don't get reclaimed by Redefine Classes |
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722 void CompileQueue::mark_on_stack() { |
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723 CompileTask* task = _first; |
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724 while (task != NULL) { |
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725 task->mark_on_stack(); |
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726 task = task->next(); |
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727 } |
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728 } |
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729 |
0 | 730 // ------------------------------------------------------------------ |
731 // CompileQueue::print | |
732 void CompileQueue::print() { | |
733 tty->print_cr("Contents of %s", name()); | |
734 tty->print_cr("----------------------"); | |
735 CompileTask* task = _first; | |
736 while (task != NULL) { | |
737 task->print_line(); | |
738 task = task->next(); | |
739 } | |
740 tty->print_cr("----------------------"); | |
741 } | |
742 | |
743 CompilerCounters::CompilerCounters(const char* thread_name, int instance, TRAPS) { | |
744 | |
745 _current_method[0] = '\0'; | |
746 _compile_type = CompileBroker::no_compile; | |
747 | |
748 if (UsePerfData) { | |
749 ResourceMark rm; | |
750 | |
751 // create the thread instance name space string - don't create an | |
752 // instance subspace if instance is -1 - keeps the adapterThread | |
753 // counters from having a ".0" namespace. | |
754 const char* thread_i = (instance == -1) ? thread_name : | |
755 PerfDataManager::name_space(thread_name, instance); | |
756 | |
757 | |
758 char* name = PerfDataManager::counter_name(thread_i, "method"); | |
759 _perf_current_method = | |
760 PerfDataManager::create_string_variable(SUN_CI, name, | |
761 cmname_buffer_length, | |
762 _current_method, CHECK); | |
763 | |
764 name = PerfDataManager::counter_name(thread_i, "type"); | |
765 _perf_compile_type = PerfDataManager::create_variable(SUN_CI, name, | |
766 PerfData::U_None, | |
767 (jlong)_compile_type, | |
768 CHECK); | |
769 | |
770 name = PerfDataManager::counter_name(thread_i, "time"); | |
771 _perf_time = PerfDataManager::create_counter(SUN_CI, name, | |
772 PerfData::U_Ticks, CHECK); | |
773 | |
774 name = PerfDataManager::counter_name(thread_i, "compiles"); | |
775 _perf_compiles = PerfDataManager::create_counter(SUN_CI, name, | |
776 PerfData::U_Events, CHECK); | |
777 } | |
778 } | |
779 | |
780 // ------------------------------------------------------------------ | |
781 // CompileBroker::compilation_init | |
782 // | |
783 // Initialize the Compilation object | |
784 void CompileBroker::compilation_init() { | |
785 _last_method_compiled[0] = '\0'; | |
786 | |
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787 // No need to initialize compilation system if we do not use it. |
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788 if (!UseCompiler) { |
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789 return; |
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790 } |
1970 | 791 #ifndef SHARK |
0 | 792 // Set the interface to the current compiler(s). |
1783 | 793 int c1_count = CompilationPolicy::policy()->compiler_count(CompLevel_simple); |
794 int c2_count = CompilationPolicy::policy()->compiler_count(CompLevel_full_optimization); | |
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795 #ifdef GRAAL |
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796 GraalCompiler* graal = new GraalCompiler(); |
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797 #endif |
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798 #ifdef GRAALVM |
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799 _compilers[0] = graal; |
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800 c1_count = 0; |
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801 c2_count = 0; |
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802 #else // GRAALVM |
0 | 803 #ifdef COMPILER1 |
1783 | 804 if (c1_count > 0) { |
805 _compilers[0] = new Compiler(); | |
806 } | |
0 | 807 #endif // COMPILER1 |
808 | |
809 #ifdef COMPILER2 | |
1783 | 810 if (c2_count > 0) { |
811 _compilers[1] = new C2Compiler(); | |
812 } | |
0 | 813 #endif // COMPILER2 |
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814 #endif // GRAALVM |
1970 | 815 #else // SHARK |
816 int c1_count = 0; | |
817 int c2_count = 1; | |
818 | |
819 _compilers[1] = new SharkCompiler(); | |
820 #endif // SHARK | |
1692 | 821 |
0 | 822 // Initialize the CompileTask free list |
823 _task_free_list = NULL; | |
824 | |
825 // Start the CompilerThreads | |
1783 | 826 init_compiler_threads(c1_count, c2_count); |
0 | 827 // totalTime performance counter is always created as it is required |
828 // by the implementation of java.lang.management.CompilationMBean. | |
829 { | |
830 EXCEPTION_MARK; | |
831 _perf_total_compilation = | |
832 PerfDataManager::create_counter(JAVA_CI, "totalTime", | |
833 PerfData::U_Ticks, CHECK); | |
834 } | |
835 | |
836 | |
837 if (UsePerfData) { | |
838 | |
839 EXCEPTION_MARK; | |
840 | |
841 // create the jvmstat performance counters | |
842 _perf_osr_compilation = | |
843 PerfDataManager::create_counter(SUN_CI, "osrTime", | |
844 PerfData::U_Ticks, CHECK); | |
845 | |
846 _perf_standard_compilation = | |
847 PerfDataManager::create_counter(SUN_CI, "standardTime", | |
848 PerfData::U_Ticks, CHECK); | |
849 | |
850 _perf_total_bailout_count = | |
851 PerfDataManager::create_counter(SUN_CI, "totalBailouts", | |
852 PerfData::U_Events, CHECK); | |
853 | |
854 _perf_total_invalidated_count = | |
855 PerfDataManager::create_counter(SUN_CI, "totalInvalidates", | |
856 PerfData::U_Events, CHECK); | |
857 | |
858 _perf_total_compile_count = | |
859 PerfDataManager::create_counter(SUN_CI, "totalCompiles", | |
860 PerfData::U_Events, CHECK); | |
861 _perf_total_osr_compile_count = | |
862 PerfDataManager::create_counter(SUN_CI, "osrCompiles", | |
863 PerfData::U_Events, CHECK); | |
864 | |
865 _perf_total_standard_compile_count = | |
866 PerfDataManager::create_counter(SUN_CI, "standardCompiles", | |
867 PerfData::U_Events, CHECK); | |
868 | |
869 _perf_sum_osr_bytes_compiled = | |
870 PerfDataManager::create_counter(SUN_CI, "osrBytes", | |
871 PerfData::U_Bytes, CHECK); | |
872 | |
873 _perf_sum_standard_bytes_compiled = | |
874 PerfDataManager::create_counter(SUN_CI, "standardBytes", | |
875 PerfData::U_Bytes, CHECK); | |
876 | |
877 _perf_sum_nmethod_size = | |
878 PerfDataManager::create_counter(SUN_CI, "nmethodSize", | |
879 PerfData::U_Bytes, CHECK); | |
880 | |
881 _perf_sum_nmethod_code_size = | |
882 PerfDataManager::create_counter(SUN_CI, "nmethodCodeSize", | |
883 PerfData::U_Bytes, CHECK); | |
884 | |
885 _perf_last_method = | |
886 PerfDataManager::create_string_variable(SUN_CI, "lastMethod", | |
887 CompilerCounters::cmname_buffer_length, | |
888 "", CHECK); | |
889 | |
890 _perf_last_failed_method = | |
891 PerfDataManager::create_string_variable(SUN_CI, "lastFailedMethod", | |
892 CompilerCounters::cmname_buffer_length, | |
893 "", CHECK); | |
894 | |
895 _perf_last_invalidated_method = | |
896 PerfDataManager::create_string_variable(SUN_CI, "lastInvalidatedMethod", | |
897 CompilerCounters::cmname_buffer_length, | |
898 "", CHECK); | |
899 | |
900 _perf_last_compile_type = | |
901 PerfDataManager::create_variable(SUN_CI, "lastType", | |
902 PerfData::U_None, | |
903 (jlong)CompileBroker::no_compile, | |
904 CHECK); | |
905 | |
906 _perf_last_compile_size = | |
907 PerfDataManager::create_variable(SUN_CI, "lastSize", | |
908 PerfData::U_Bytes, | |
909 (jlong)CompileBroker::no_compile, | |
910 CHECK); | |
911 | |
912 | |
913 _perf_last_failed_type = | |
914 PerfDataManager::create_variable(SUN_CI, "lastFailedType", | |
915 PerfData::U_None, | |
916 (jlong)CompileBroker::no_compile, | |
917 CHECK); | |
918 | |
919 _perf_last_invalidated_type = | |
920 PerfDataManager::create_variable(SUN_CI, "lastInvalidatedType", | |
921 PerfData::U_None, | |
922 (jlong)CompileBroker::no_compile, | |
923 CHECK); | |
924 } | |
925 | |
926 _initialized = true; | |
927 } | |
928 | |
929 | |
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930 CompilerThread* CompileBroker::make_compiler_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, |
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931 AbstractCompiler* comp, TRAPS) { |
0 | 932 CompilerThread* compiler_thread = NULL; |
933 | |
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934 Klass* k = |
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935 SystemDictionary::resolve_or_fail(vmSymbols::java_lang_Thread(), |
0 | 936 true, CHECK_0); |
937 instanceKlassHandle klass (THREAD, k); | |
938 instanceHandle thread_oop = klass->allocate_instance_handle(CHECK_0); | |
939 Handle string = java_lang_String::create_from_str(name, CHECK_0); | |
940 | |
941 // Initialize thread_oop to put it into the system threadGroup | |
942 Handle thread_group (THREAD, Universe::system_thread_group()); | |
943 JavaValue result(T_VOID); | |
944 JavaCalls::call_special(&result, thread_oop, | |
945 klass, | |
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946 vmSymbols::object_initializer_name(), |
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947 vmSymbols::threadgroup_string_void_signature(), |
0 | 948 thread_group, |
949 string, | |
950 CHECK_0); | |
951 | |
952 { | |
953 MutexLocker mu(Threads_lock, THREAD); | |
954 compiler_thread = new CompilerThread(queue, counters); | |
955 // At this point the new CompilerThread data-races with this startup | |
956 // thread (which I believe is the primoridal thread and NOT the VM | |
957 // thread). This means Java bytecodes being executed at startup can | |
958 // queue compile jobs which will run at whatever default priority the | |
959 // newly created CompilerThread runs at. | |
960 | |
961 | |
962 // At this point it may be possible that no osthread was created for the | |
963 // JavaThread due to lack of memory. We would have to throw an exception | |
964 // in that case. However, since this must work and we do not allow | |
965 // exceptions anyway, check and abort if this fails. | |
966 | |
967 if (compiler_thread == NULL || compiler_thread->osthread() == NULL){ | |
968 vm_exit_during_initialization("java.lang.OutOfMemoryError", | |
969 "unable to create new native thread"); | |
970 } | |
971 | |
972 java_lang_Thread::set_thread(thread_oop(), compiler_thread); | |
973 | |
974 // Note that this only sets the JavaThread _priority field, which by | |
975 // definition is limited to Java priorities and not OS priorities. | |
976 // The os-priority is set in the CompilerThread startup code itself | |
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977 |
0 | 978 java_lang_Thread::set_priority(thread_oop(), NearMaxPriority); |
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979 |
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980 // Note that we cannot call os::set_priority because it expects Java |
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981 // priorities and we are *explicitly* using OS priorities so that it's |
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982 // possible to set the compiler thread priority higher than any Java |
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983 // thread. |
0 | 984 |
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985 int native_prio = CompilerThreadPriority; |
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986 if (native_prio == -1) { |
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987 if (UseCriticalCompilerThreadPriority) { |
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988 native_prio = os::java_to_os_priority[CriticalPriority]; |
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989 } else { |
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990 native_prio = os::java_to_os_priority[NearMaxPriority]; |
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991 } |
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992 } |
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993 os::set_native_priority(compiler_thread, native_prio); |
0 | 994 |
995 java_lang_Thread::set_daemon(thread_oop()); | |
996 | |
997 compiler_thread->set_threadObj(thread_oop()); | |
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998 compiler_thread->set_compiler(comp); |
0 | 999 Threads::add(compiler_thread); |
1000 Thread::start(compiler_thread); | |
1001 } | |
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1002 |
0 | 1003 // Let go of Threads_lock before yielding |
1004 os::yield(); // make sure that the compiler thread is started early (especially helpful on SOLARIS) | |
1005 | |
1006 return compiler_thread; | |
1007 } | |
1008 | |
1009 | |
1783 | 1010 void CompileBroker::init_compiler_threads(int c1_compiler_count, int c2_compiler_count) { |
0 | 1011 EXCEPTION_MARK; |
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1012 #if !defined(ZERO) && !defined(SHARK) && !defined(GRAALVM) |
1783 | 1013 assert(c2_compiler_count > 0 || c1_compiler_count > 0, "No compilers?"); |
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1014 #endif // !ZERO && !SHARK && !GRAALVM |
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1015 // Initialize the compilation queue |
1783 | 1016 if (c2_compiler_count > 0) { |
1017 _c2_method_queue = new CompileQueue("C2MethodQueue", MethodCompileQueue_lock); | |
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1018 _compilers[1]->set_num_compiler_threads(c2_compiler_count); |
1783 | 1019 } |
1020 if (c1_compiler_count > 0) { | |
1021 _c1_method_queue = new CompileQueue("C1MethodQueue", MethodCompileQueue_lock); | |
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1022 _compilers[0]->set_num_compiler_threads(c1_compiler_count); |
1783 | 1023 } |
0 | 1024 |
1783 | 1025 int compiler_count = c1_compiler_count + c2_compiler_count; |
1026 | |
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1027 _compiler_threads = |
6197 | 1028 new (ResourceObj::C_HEAP, mtCompiler) GrowableArray<CompilerThread*>(compiler_count, true); |
0 | 1029 |
1030 char name_buffer[256]; | |
1783 | 1031 for (int i = 0; i < c2_compiler_count; i++) { |
0 | 1032 // Create a name for our thread. |
1783 | 1033 sprintf(name_buffer, "C2 CompilerThread%d", i); |
0 | 1034 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK); |
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1035 // Shark and C2 |
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1036 CompilerThread* new_thread = make_compiler_thread(name_buffer, _c2_method_queue, counters, _compilers[1], CHECK); |
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1037 _compiler_threads->append(new_thread); |
0 | 1038 } |
1783 | 1039 |
1040 for (int i = c2_compiler_count; i < compiler_count; i++) { | |
1041 // Create a name for our thread. | |
1042 sprintf(name_buffer, "C1 CompilerThread%d", i); | |
1043 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK); | |
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1044 // C1 |
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1045 CompilerThread* new_thread = make_compiler_thread(name_buffer, _c1_method_queue, counters, _compilers[0], CHECK); |
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1046 _compiler_threads->append(new_thread); |
1783 | 1047 } |
1048 | |
0 | 1049 if (UsePerfData) { |
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1050 PerfDataManager::create_constant(SUN_CI, "threads", PerfData::U_Bytes, compiler_count, CHECK); |
0 | 1051 } |
1052 } | |
1053 | |
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1054 |
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1055 // Set the methods on the stack as on_stack so that redefine classes doesn't |
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1056 // reclaim them |
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1057 void CompileBroker::mark_on_stack() { |
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1058 if (_c2_method_queue != NULL) { |
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1059 _c2_method_queue->mark_on_stack(); |
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1060 } |
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1061 if (_c1_method_queue != NULL) { |
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1062 _c1_method_queue->mark_on_stack(); |
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1063 } |
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1064 } |
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1065 |
0 | 1066 // ------------------------------------------------------------------ |
1067 // CompileBroker::compile_method | |
1068 // | |
1069 // Request compilation of a method. | |
1070 void CompileBroker::compile_method_base(methodHandle method, | |
1071 int osr_bci, | |
1072 int comp_level, | |
1073 methodHandle hot_method, | |
1074 int hot_count, | |
1075 const char* comment, | |
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1076 Thread* thread) { |
0 | 1077 // do nothing if compiler thread(s) is not available |
1078 if (!_initialized ) { | |
1079 return; | |
1080 } | |
1081 | |
1082 guarantee(!method->is_abstract(), "cannot compile abstract methods"); | |
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1083 assert(method->method_holder()->oop_is_instance(), |
0 | 1084 "sanity check"); |
6940
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|
1085 assert(!method->method_holder()->is_not_initialized(), |
0 | 1086 "method holder must be initialized"); |
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1087 assert(!method->is_method_handle_intrinsic(), "do not enqueue these guys"); |
0 | 1088 |
1089 if (CIPrintRequests) { | |
1090 tty->print("request: "); | |
1091 method->print_short_name(tty); | |
1092 if (osr_bci != InvocationEntryBci) { | |
1093 tty->print(" osr_bci: %d", osr_bci); | |
1094 } | |
1095 tty->print(" comment: %s count: %d", comment, hot_count); | |
1096 if (!hot_method.is_null()) { | |
1097 tty->print(" hot: "); | |
1098 if (hot_method() != method()) { | |
1099 hot_method->print_short_name(tty); | |
1100 } else { | |
1101 tty->print("yes"); | |
1102 } | |
1103 } | |
1104 tty->cr(); | |
1105 } | |
1106 | |
1107 // A request has been made for compilation. Before we do any | |
1108 // real work, check to see if the method has been compiled | |
1109 // in the meantime with a definitive result. | |
1110 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
1111 return; | |
1112 } | |
1113 | |
2403 | 1114 #ifndef PRODUCT |
1115 if (osr_bci != -1 && !FLAG_IS_DEFAULT(OSROnlyBCI)) { | |
1116 if ((OSROnlyBCI > 0) ? (OSROnlyBCI != osr_bci) : (-OSROnlyBCI == osr_bci)) { | |
1117 // Positive OSROnlyBCI means only compile that bci. Negative means don't compile that BCI. | |
1118 return; | |
1119 } | |
1120 } | |
1121 #endif | |
1783 | 1122 |
0 | 1123 // If this method is already in the compile queue, then |
1124 // we do not block the current thread. | |
1125 if (compilation_is_in_queue(method, osr_bci)) { | |
1126 // We may want to decay our counter a bit here to prevent | |
1127 // multiple denied requests for compilation. This is an | |
1128 // open compilation policy issue. Note: The other possibility, | |
1129 // in the case that this is a blocking compile request, is to have | |
1130 // all subsequent blocking requesters wait for completion of | |
1131 // ongoing compiles. Note that in this case we'll need a protocol | |
1132 // for freeing the associated compile tasks. [Or we could have | |
1133 // a single static monitor on which all these waiters sleep.] | |
1134 return; | |
1135 } | |
1136 | |
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1137 // If the requesting thread is holding the pending list lock |
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1138 // then we just return. We can't risk blocking while holding |
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|
1139 // the pending list lock or a 3-way deadlock may occur |
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1140 // between the reference handler thread, a GC (instigated |
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|
1141 // by a compiler thread), and compiled method registration. |
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1142 if (InstanceRefKlass::owns_pending_list_lock(JavaThread::current())) { |
3294
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|
1143 return; |
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|
1144 } |
7154
5d0bb7d52783
changes to support Graal co-existing with the other HotSpot compiler(s) and being used for explicit compilation requests and code installation via the Graal API
Doug Simon <doug.simon@oracle.com>
parents:
7125
diff
changeset
|
1145 #ifdef GRAALVM |
13089
77fbf02f701c
re-enabled protection against recursive Graal compilation requests with Graal specific _graal_compiling field in JavaThread
Doug Simon <doug.simon@oracle.com>
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13086
diff
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|
1146 if (!JavaThread::current()->is_graal_compiling()) { |
77fbf02f701c
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Doug Simon <doug.simon@oracle.com>
parents:
13086
diff
changeset
|
1147 GraalCompiler::instance()->compile_method(method, osr_bci, is_compile_blocking(method, osr_bci)); |
77fbf02f701c
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Doug Simon <doug.simon@oracle.com>
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|
1148 } else { |
77fbf02f701c
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Doug Simon <doug.simon@oracle.com>
parents:
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|
1149 // Recursive compile request => ignore. |
77fbf02f701c
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Doug Simon <doug.simon@oracle.com>
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|
1150 } |
4981
1b8d02e10ee8
Remove the hacks around "is_Compiler_thread" assertions; Graal no longer uses the compiler thread mechanisms; don't create a C++ compilation queue or any compiler threads.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
4977
diff
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|
1151 #else |
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|
1152 |
0 | 1153 // Outputs from the following MutexLocker block: |
1154 CompileTask* task = NULL; | |
1155 bool blocking = false; | |
1783 | 1156 CompileQueue* queue = compile_queue(comp_level); |
0 | 1157 |
1158 // Acquire our lock. | |
1159 { | |
4825
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4122
diff
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|
1160 MutexLocker locker(queue->lock(), thread); |
0 | 1161 |
1162 // Make sure the method has not slipped into the queues since | |
1163 // last we checked; note that those checks were "fast bail-outs". | |
1164 // Here we need to be more careful, see 14012000 below. | |
1165 if (compilation_is_in_queue(method, osr_bci)) { | |
1166 return; | |
1167 } | |
1168 | |
1169 // We need to check again to see if the compilation has | |
1170 // completed. A previous compilation may have registered | |
1171 // some result. | |
1172 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
1173 return; | |
1174 } | |
1175 | |
1176 // We now know that this compilation is not pending, complete, | |
1177 // or prohibited. Assign a compile_id to this compilation | |
1178 // and check to see if it is in our [Start..Stop) range. | |
1179 uint compile_id = assign_compile_id(method, osr_bci); | |
1180 if (compile_id == 0) { | |
1181 // The compilation falls outside the allowed range. | |
1182 return; | |
1183 } | |
1184 | |
1185 // Should this thread wait for completion of the compile? | |
1186 blocking = is_compile_blocking(method, osr_bci); | |
1187 | |
1188 // We will enter the compilation in the queue. | |
1189 // 14012000: Note that this sets the queued_for_compile bits in | |
1190 // the target method. We can now reason that a method cannot be | |
1191 // queued for compilation more than once, as follows: | |
1192 // Before a thread queues a task for compilation, it first acquires | |
1193 // the compile queue lock, then checks if the method's queued bits | |
1194 // are set or it has already been compiled. Thus there can not be two | |
1195 // instances of a compilation task for the same method on the | |
1196 // compilation queue. Consider now the case where the compilation | |
1197 // thread has already removed a task for that method from the queue | |
1198 // and is in the midst of compiling it. In this case, the | |
1199 // queued_for_compile bits must be set in the method (and these | |
1200 // will be visible to the current thread, since the bits were set | |
1201 // under protection of the compile queue lock, which we hold now. | |
1202 // When the compilation completes, the compiler thread first sets | |
1203 // the compilation result and then clears the queued_for_compile | |
1204 // bits. Neither of these actions are protected by a barrier (or done | |
1205 // under the protection of a lock), so the only guarantee we have | |
1206 // (on machines with TSO (Total Store Order)) is that these values | |
1207 // will update in that order. As a result, the only combinations of | |
1208 // these bits that the current thread will see are, in temporal order: | |
1209 // <RESULT, QUEUE> : | |
1210 // <0, 1> : in compile queue, but not yet compiled | |
1211 // <1, 1> : compiled but queue bit not cleared | |
1212 // <1, 0> : compiled and queue bit cleared | |
1213 // Because we first check the queue bits then check the result bits, | |
1214 // we are assured that we cannot introduce a duplicate task. | |
1215 // Note that if we did the tests in the reverse order (i.e. check | |
1216 // result then check queued bit), we could get the result bit before | |
1217 // the compilation completed, and the queue bit after the compilation | |
1218 // completed, and end up introducing a "duplicate" (redundant) task. | |
1219 // In that case, the compiler thread should first check if a method | |
1220 // has already been compiled before trying to compile it. | |
1221 // NOTE: in the event that there are multiple compiler threads and | |
1222 // there is de-optimization/recompilation, things will get hairy, | |
1223 // and in that case it's best to protect both the testing (here) of | |
1224 // these bits, and their updating (here and elsewhere) under a | |
1225 // common lock. | |
1783 | 1226 task = create_compile_task(queue, |
0 | 1227 compile_id, method, |
1228 osr_bci, comp_level, | |
1229 hot_method, hot_count, comment, | |
1230 blocking); | |
1231 } | |
1232 | |
1233 if (blocking) { | |
1234 wait_for_completion(task); | |
1235 } | |
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723df37192d6
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Gilles Duboscq <duboscq@ssw.jku.at>
parents:
4319
diff
changeset
|
1236 #endif |
0 | 1237 } |
1238 | |
1239 | |
1240 nmethod* CompileBroker::compile_method(methodHandle method, int osr_bci, | |
1783 | 1241 int comp_level, |
0 | 1242 methodHandle hot_method, int hot_count, |
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|
1243 const char* comment, Thread* THREAD) { |
0 | 1244 // make sure arguments make sense |
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1245 assert(method->method_holder()->oop_is_instance(), "not an instance method"); |
0 | 1246 assert(osr_bci == InvocationEntryBci || (0 <= osr_bci && osr_bci < method->code_size()), "bci out of range"); |
1247 assert(!method->is_abstract() && (osr_bci == InvocationEntryBci || !method->is_native()), "cannot compile abstract/native methods"); | |
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22851e342f0e
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
8883
diff
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|
1248 assert(!method->method_holder()->is_not_initialized() || method->intrinsic_id() == vmIntrinsics::_CompilerToVMImpl_executeCompiledMethod, "method holder must be initialized"); |
9080
b84fd7d73702
8007288: Additional WB API for compiler's testing
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|
1249 // allow any levels for WhiteBox |
b84fd7d73702
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8860
diff
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|
1250 assert(WhiteBoxAPI || TieredCompilation || comp_level == CompLevel_highest_tier, "only CompLevel_highest_tier must be used in non-tiered"); |
0 | 1251 // return quickly if possible |
1252 | |
1253 // lock, make sure that the compilation | |
1254 // isn't prohibited in a straightforward way. | |
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75a28f465a12
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morris
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8730
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|
1255 AbstractCompiler *comp = CompileBroker::compiler(comp_level); |
75a28f465a12
8008663: [parfait] Null pointer deference in hotspot/src/share/vm/compiler/compileBroker.cpp
morris
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|
1256 if (comp == NULL || !comp->can_compile_method(method) || |
75a28f465a12
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morris
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8730
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|
1257 compilation_is_prohibited(method, osr_bci, comp_level)) { |
0 | 1258 return NULL; |
1259 } | |
1260 | |
1261 if (osr_bci == InvocationEntryBci) { | |
1262 // standard compilation | |
1263 nmethod* method_code = method->code(); | |
1783 | 1264 if (method_code != NULL) { |
1265 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
1266 return method_code; | |
1267 } | |
0 | 1268 } |
12324
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
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12158
diff
changeset
|
1269 if (method->is_not_compilable(comp_level)) { |
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
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12158
diff
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|
1270 return NULL; |
1202 | 1271 } |
0 | 1272 } else { |
1273 // osr compilation | |
1274 #ifndef TIERED | |
1275 // seems like an assert of dubious value | |
1783 | 1276 assert(comp_level == CompLevel_highest_tier, |
0 | 1277 "all OSR compiles are assumed to be at a single compilation lavel"); |
1278 #endif // TIERED | |
1783 | 1279 // We accept a higher level osr method |
1280 nmethod* nm = method->lookup_osr_nmethod_for(osr_bci, comp_level, false); | |
0 | 1281 if (nm != NULL) return nm; |
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9191895df19d
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twisti
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6735
diff
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|
1282 if (method->is_not_osr_compilable(comp_level)) return NULL; |
0 | 1283 } |
1284 | |
1285 assert(!HAS_PENDING_EXCEPTION, "No exception should be present"); | |
1286 // some prerequisites that are compiler specific | |
8771
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1287 if (comp->is_c2() || comp->is_shark()) { |
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4122
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|
1288 method->constants()->resolve_string_constants(CHECK_AND_CLEAR_NULL); |
0 | 1289 // Resolve all classes seen in the signature of the method |
1290 // we are compiling. | |
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1291 Method::load_signature_classes(method, CHECK_AND_CLEAR_NULL); |
0 | 1292 } |
1293 | |
1294 // If the method is native, do the lookup in the thread requesting | |
1295 // the compilation. Native lookups can load code, which is not | |
1296 // permitted during compilation. | |
1297 // | |
1298 // Note: A native method implies non-osr compilation which is | |
1299 // checked with an assertion at the entry of this method. | |
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|
1300 if (method->is_native() && !method->is_method_handle_intrinsic()) { |
0 | 1301 bool in_base_library; |
1302 address adr = NativeLookup::lookup(method, in_base_library, THREAD); | |
1303 if (HAS_PENDING_EXCEPTION) { | |
1304 // In case of an exception looking up the method, we just forget | |
1305 // about it. The interpreter will kick-in and throw the exception. | |
1306 method->set_not_compilable(); // implies is_not_osr_compilable() | |
1307 CLEAR_PENDING_EXCEPTION; | |
1308 return NULL; | |
1309 } | |
1310 assert(method->has_native_function(), "must have native code by now"); | |
1311 } | |
1312 | |
1313 // RedefineClasses() has replaced this method; just return | |
1314 if (method->is_old()) { | |
1315 return NULL; | |
1316 } | |
1317 | |
1318 // JVMTI -- post_compile_event requires jmethod_id() that may require | |
1319 // a lock the compiling thread can not acquire. Prefetch it here. | |
1320 if (JvmtiExport::should_post_compiled_method_load()) { | |
1321 method->jmethod_id(); | |
1322 } | |
1323 | |
1324 // do the compilation | |
1325 if (method->is_native()) { | |
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1326 if (!PreferInterpreterNativeStubs || method->is_method_handle_intrinsic()) { |
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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2403
diff
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|
1327 // Acquire our lock. |
3d58a4983660
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2403
diff
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|
1328 int compile_id; |
3d58a4983660
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2403
diff
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|
1329 { |
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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|
1330 MutexLocker locker(MethodCompileQueue_lock, THREAD); |
3d58a4983660
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twisti
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2403
diff
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|
1331 compile_id = assign_compile_id(method, standard_entry_bci); |
3d58a4983660
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1332 } |
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8b4bbba322d3
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|
1333 // To properly handle the appendix argument for out-of-line calls we are using a small trampoline that |
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|
1334 // pops off the appendix argument and jumps to the target (see gen_special_dispatch in SharedRuntime). |
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|
1335 // |
8b4bbba322d3
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12880
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|
1336 // Since normal compiled-to-compiled calls are not able to handle such a thing we MUST generate an adapter |
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|
1337 // in this case. If we can't generate one and use it we can not execute the out-of-line method handle calls. |
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2403
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|
1338 (void) AdapterHandlerLibrary::create_native_wrapper(method, compile_id); |
0 | 1339 } else { |
1340 return NULL; | |
1341 } | |
1342 } else { | |
12965
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12880
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|
1343 // If the compiler is shut off due to code cache getting full |
8b4bbba322d3
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12880
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|
1344 // fail out now so blocking compiles dont hang the java thread |
8b4bbba322d3
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|
1345 if (!should_compile_new_jobs()) { |
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12880
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|
1346 CompilationPolicy::policy()->delay_compilation(method()); |
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|
1347 return NULL; |
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|
1348 } |
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1349 compile_method_base(method, osr_bci, comp_level, hot_method, hot_count, comment, THREAD); |
0 | 1350 } |
1351 | |
1352 // return requested nmethod | |
1783 | 1353 // We accept a higher level osr method |
1354 return osr_bci == InvocationEntryBci ? method->code() : method->lookup_osr_nmethod_for(osr_bci, comp_level, false); | |
0 | 1355 } |
1356 | |
1357 | |
1358 // ------------------------------------------------------------------ | |
1359 // CompileBroker::compilation_is_complete | |
1360 // | |
1361 // See if compilation of this method is already complete. | |
1362 bool CompileBroker::compilation_is_complete(methodHandle method, | |
1363 int osr_bci, | |
1364 int comp_level) { | |
1365 bool is_osr = (osr_bci != standard_entry_bci); | |
1366 if (is_osr) { | |
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9191895df19d
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twisti
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6735
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1367 if (method->is_not_osr_compilable(comp_level)) { |
0 | 1368 return true; |
1369 } else { | |
1783 | 1370 nmethod* result = method->lookup_osr_nmethod_for(osr_bci, comp_level, true); |
0 | 1371 return (result != NULL); |
1372 } | |
1373 } else { | |
1374 if (method->is_not_compilable(comp_level)) { | |
1375 return true; | |
1376 } else { | |
1377 nmethod* result = method->code(); | |
1378 if (result == NULL) return false; | |
1783 | 1379 return comp_level == result->comp_level(); |
0 | 1380 } |
1381 } | |
1382 } | |
1383 | |
1384 | |
1385 // ------------------------------------------------------------------ | |
1386 // CompileBroker::compilation_is_in_queue | |
1387 // | |
1388 // See if this compilation is already requested. | |
1389 // | |
1390 // Implementation note: there is only a single "is in queue" bit | |
1391 // for each method. This means that the check below is overly | |
1392 // conservative in the sense that an osr compilation in the queue | |
1393 // will block a normal compilation from entering the queue (and vice | |
1394 // versa). This can be remedied by a full queue search to disambiguate | |
1395 // cases. If it is deemed profitible, this may be done. | |
1396 bool CompileBroker::compilation_is_in_queue(methodHandle method, | |
1783 | 1397 int osr_bci) { |
0 | 1398 return method->queued_for_compilation(); |
1399 } | |
1400 | |
1401 // ------------------------------------------------------------------ | |
1402 // CompileBroker::compilation_is_prohibited | |
1403 // | |
1404 // See if this compilation is not allowed. | |
1405 bool CompileBroker::compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level) { | |
1406 bool is_native = method->is_native(); | |
1407 // Some compilers may not support the compilation of natives. | |
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1408 AbstractCompiler *comp = compiler(comp_level); |
0 | 1409 if (is_native && |
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1410 (!CICompileNatives || comp == NULL || !comp->supports_native())) { |
1783 | 1411 method->set_not_compilable_quietly(comp_level); |
0 | 1412 return true; |
1413 } | |
1414 | |
1415 bool is_osr = (osr_bci != standard_entry_bci); | |
1416 // Some compilers may not support on stack replacement. | |
1417 if (is_osr && | |
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1418 (!CICompileOSR || comp == NULL || !comp->supports_osr())) { |
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1419 method->set_not_osr_compilable(comp_level); |
0 | 1420 return true; |
1421 } | |
1422 | |
1423 // The method may be explicitly excluded by the user. | |
1424 bool quietly; | |
1425 if (CompilerOracle::should_exclude(method, quietly)) { | |
1426 if (!quietly) { | |
1427 // This does not happen quietly... | |
1428 ResourceMark rm; | |
1429 tty->print("### Excluding %s:%s", | |
1430 method->is_native() ? "generation of native wrapper" : "compile", | |
1431 (method->is_static() ? " static" : "")); | |
1432 method->print_short_name(tty); | |
1433 tty->cr(); | |
1434 } | |
7998 | 1435 method->set_not_compilable(CompLevel_all, !quietly, "excluded by CompilerOracle"); |
0 | 1436 } |
1437 | |
1438 return false; | |
1439 } | |
1440 | |
1441 | |
1442 // ------------------------------------------------------------------ | |
1443 // CompileBroker::assign_compile_id | |
1444 // | |
1445 // Assign a serialized id number to this compilation request. If the | |
1446 // number falls out of the allowed range, return a 0. OSR | |
1447 // compilations may be numbered separately from regular compilations | |
1448 // if certain debugging flags are used. | |
1449 uint CompileBroker::assign_compile_id(methodHandle method, int osr_bci) { | |
1783 | 1450 assert(MethodCompileQueue_lock->owner() == Thread::current(), |
0 | 1451 "must hold the compilation queue lock"); |
1452 bool is_osr = (osr_bci != standard_entry_bci); | |
1453 uint id; | |
1454 if (CICountOSR && is_osr) { | |
1455 id = ++_osr_compilation_id; | |
1456 if ((uint)CIStartOSR <= id && id < (uint)CIStopOSR) { | |
1457 return id; | |
1458 } | |
1459 } else { | |
1460 id = ++_compilation_id; | |
1461 if ((uint)CIStart <= id && id < (uint)CIStop) { | |
1462 return id; | |
1463 } | |
1464 } | |
1465 | |
1466 // Method was not in the appropriate compilation range. | |
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1467 method->set_not_compilable_quietly(); |
0 | 1468 return 0; |
1469 } | |
1470 | |
1471 | |
1472 // ------------------------------------------------------------------ | |
1473 // CompileBroker::is_compile_blocking | |
1474 // | |
1475 // Should the current thread be blocked until this compilation request | |
1476 // has been fulfilled? | |
1477 bool CompileBroker::is_compile_blocking(methodHandle method, int osr_bci) { | |
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1478 assert(!InstanceRefKlass::owns_pending_list_lock(JavaThread::current()), "possible deadlock"); |
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1479 return !BackgroundCompilation; |
0 | 1480 } |
1481 | |
1482 | |
1483 // ------------------------------------------------------------------ | |
1484 // CompileBroker::preload_classes | |
1485 void CompileBroker::preload_classes(methodHandle method, TRAPS) { | |
1486 // Move this code over from c1_Compiler.cpp | |
1487 ShouldNotReachHere(); | |
1488 } | |
1489 | |
1490 | |
1491 // ------------------------------------------------------------------ | |
1492 // CompileBroker::create_compile_task | |
1493 // | |
1494 // Create a CompileTask object representing the current request for | |
1495 // compilation. Add this task to the queue. | |
1496 CompileTask* CompileBroker::create_compile_task(CompileQueue* queue, | |
1497 int compile_id, | |
1498 methodHandle method, | |
1499 int osr_bci, | |
1500 int comp_level, | |
1501 methodHandle hot_method, | |
1502 int hot_count, | |
1503 const char* comment, | |
1504 bool blocking) { | |
1505 CompileTask* new_task = allocate_task(); | |
1506 new_task->initialize(compile_id, method, osr_bci, comp_level, | |
1507 hot_method, hot_count, comment, | |
1508 blocking); | |
1509 queue->add(new_task); | |
1510 return new_task; | |
1511 } | |
1512 | |
1513 | |
1514 // ------------------------------------------------------------------ | |
1515 // CompileBroker::allocate_task | |
1516 // | |
1517 // Allocate a CompileTask, from the free list if possible. | |
1518 CompileTask* CompileBroker::allocate_task() { | |
1519 MutexLocker locker(CompileTaskAlloc_lock); | |
1520 CompileTask* task = NULL; | |
1521 if (_task_free_list != NULL) { | |
1522 task = _task_free_list; | |
1523 _task_free_list = task->next(); | |
1524 task->set_next(NULL); | |
1525 } else { | |
1526 task = new CompileTask(); | |
1527 task->set_next(NULL); | |
1528 } | |
1529 return task; | |
1530 } | |
1531 | |
1532 | |
1533 // ------------------------------------------------------------------ | |
1534 // CompileBroker::free_task | |
1535 // | |
1536 // Add a task to the free list. | |
1537 void CompileBroker::free_task(CompileTask* task) { | |
1538 MutexLocker locker(CompileTaskAlloc_lock); | |
1539 task->free(); | |
1540 task->set_next(_task_free_list); | |
1541 _task_free_list = task; | |
1542 } | |
1543 | |
1544 | |
1545 // ------------------------------------------------------------------ | |
1546 // CompileBroker::wait_for_completion | |
1547 // | |
1548 // Wait for the given method CompileTask to complete. | |
1549 void CompileBroker::wait_for_completion(CompileTask* task) { | |
1550 if (CIPrintCompileQueue) { | |
1551 tty->print_cr("BLOCKING FOR COMPILE"); | |
1552 } | |
1553 | |
1554 assert(task->is_blocking(), "can only wait on blocking task"); | |
1555 | |
1556 JavaThread *thread = JavaThread::current(); | |
1557 thread->set_blocked_on_compilation(true); | |
1558 | |
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1559 methodHandle method(thread, task->method()); |
0 | 1560 { |
1561 MutexLocker waiter(task->lock(), thread); | |
1562 | |
1563 while (!task->is_complete()) | |
1564 task->lock()->wait(); | |
1565 } | |
1566 // It is harmless to check this status without the lock, because | |
1567 // completion is a stable property (until the task object is recycled). | |
1568 assert(task->is_complete(), "Compilation should have completed"); | |
1569 assert(task->code_handle() == NULL, "must be reset"); | |
1570 | |
1571 thread->set_blocked_on_compilation(false); | |
1572 | |
1573 // By convention, the waiter is responsible for recycling a | |
1574 // blocking CompileTask. Since there is only one waiter ever | |
1575 // waiting on a CompileTask, we know that no one else will | |
1576 // be using this CompileTask; we can free it. | |
1577 free_task(task); | |
1578 } | |
1579 | |
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1580 // Initialize compiler thread(s) + compiler object(s). The postcondition |
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1581 // of this function is that the compiler runtimes are initialized and that |
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1582 //compiler threads can start compiling. |
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1583 bool CompileBroker::init_compiler_runtime() { |
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1584 CompilerThread* thread = CompilerThread::current(); |
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1585 AbstractCompiler* comp = thread->compiler(); |
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1586 // Final sanity check - the compiler object must exist |
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1587 guarantee(comp != NULL, "Compiler object must exist"); |
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1588 |
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1589 int system_dictionary_modification_counter; |
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1590 { |
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1591 MutexLocker locker(Compile_lock, thread); |
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1592 system_dictionary_modification_counter = SystemDictionary::number_of_modifications(); |
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1593 } |
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1594 |
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1595 { |
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1596 // Must switch to native to allocate ci_env |
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1597 ThreadToNativeFromVM ttn(thread); |
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1598 ciEnv ci_env(NULL, system_dictionary_modification_counter); |
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1599 // Cache Jvmti state |
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1600 ci_env.cache_jvmti_state(); |
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1601 // Cache DTrace flags |
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1602 ci_env.cache_dtrace_flags(); |
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1603 |
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1604 // Switch back to VM state to do compiler initialization |
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1605 ThreadInVMfromNative tv(thread); |
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1606 ResetNoHandleMark rnhm; |
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1607 |
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1608 |
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1609 if (!comp->is_shark()) { |
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1610 // Perform per-thread and global initializations |
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1611 comp->initialize(); |
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1612 } |
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1613 } |
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1614 |
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1615 if (comp->is_failed()) { |
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1616 disable_compilation_forever(); |
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1617 // If compiler initialization failed, no compiler thread that is specific to a |
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1618 // particular compiler runtime will ever start to compile methods. |
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1619 |
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1620 shutdown_compiler_runtime(comp, thread); |
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1621 return false; |
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1622 } |
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1623 |
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1624 // C1 specific check |
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1625 if (comp->is_c1() && (thread->get_buffer_blob() == NULL)) { |
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1626 warning("Initialization of %s thread failed (no space to run compilers)", thread->name()); |
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1627 return false; |
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1628 } |
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1629 |
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1630 return true; |
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1631 } |
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1632 |
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1633 // If C1 and/or C2 initialization failed, we shut down all compilation. |
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1634 // We do this to keep things simple. This can be changed if it ever turns out to be |
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1635 // a problem. |
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1636 void CompileBroker::shutdown_compiler_runtime(AbstractCompiler* comp, CompilerThread* thread) { |
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1637 // Free buffer blob, if allocated |
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1638 if (thread->get_buffer_blob() != NULL) { |
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1639 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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1640 CodeCache::free(thread->get_buffer_blob()); |
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1641 } |
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1642 |
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1643 if (comp->should_perform_shutdown()) { |
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1644 // There are two reasons for shutting down the compiler |
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1645 // 1) compiler runtime initialization failed |
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1646 // 2) The code cache is full and the following flag is set: -XX:-UseCodeCacheFlushing |
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1647 warning("Shutting down compiler %s (no space to run compilers)", comp->name()); |
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1648 |
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1649 // Only one thread per compiler runtime object enters here |
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1650 // Set state to shut down |
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1651 comp->set_shut_down(); |
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1652 |
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1653 MutexLocker mu(MethodCompileQueue_lock, thread); |
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1654 CompileQueue* queue; |
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1655 if (_c1_method_queue != NULL) { |
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1656 _c1_method_queue->delete_all(); |
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1657 queue = _c1_method_queue; |
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1658 _c1_method_queue = NULL; |
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1659 delete _c1_method_queue; |
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1660 } |
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1661 |
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1662 if (_c2_method_queue != NULL) { |
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1663 _c2_method_queue->delete_all(); |
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1664 queue = _c2_method_queue; |
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1665 _c2_method_queue = NULL; |
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1666 delete _c2_method_queue; |
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1667 } |
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1668 |
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1669 // We could delete compiler runtimes also. However, there are references to |
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1670 // the compiler runtime(s) (e.g., nmethod::is_compiled_by_c1()) which then |
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1671 // fail. This can be done later if necessary. |
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1672 } |
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1673 } |
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1674 |
0 | 1675 // ------------------------------------------------------------------ |
1676 // CompileBroker::compiler_thread_loop | |
1677 // | |
1678 // The main loop run by a CompilerThread. | |
1679 void CompileBroker::compiler_thread_loop() { | |
1680 CompilerThread* thread = CompilerThread::current(); | |
1681 CompileQueue* queue = thread->queue(); | |
1682 // For the thread that initializes the ciObjectFactory | |
1683 // this resource mark holds all the shared objects | |
1684 ResourceMark rm; | |
1685 | |
1686 // First thread to get here will initialize the compiler interface | |
1687 | |
1688 if (!ciObjectFactory::is_initialized()) { | |
1689 ASSERT_IN_VM; | |
1690 MutexLocker only_one (CompileThread_lock, thread); | |
1691 if (!ciObjectFactory::is_initialized()) { | |
1692 ciObjectFactory::initialize(); | |
1693 } | |
1694 } | |
1695 | |
1696 // Open a log. | |
1697 if (LogCompilation) { | |
1698 init_compiler_thread_log(); | |
1699 } | |
1700 CompileLog* log = thread->log(); | |
1701 if (log != NULL) { | |
6843 | 1702 log->begin_elem("start_compile_thread name='%s' thread='" UINTX_FORMAT "' process='%d'", |
1703 thread->name(), | |
0 | 1704 os::current_thread_id(), |
1705 os::current_process_id()); | |
1706 log->stamp(); | |
1707 log->end_elem(); | |
1708 } | |
1709 | |
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1710 // If compiler thread/runtime initialization fails, exit the compiler thread |
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1711 if (!init_compiler_runtime()) { |
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1712 return; |
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1713 } |
1202 | 1714 |
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1715 // Poll for new compilation tasks as long as the JVM runs. Compilation |
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1716 // should only be disabled if something went wrong while initializing the |
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1717 // compiler runtimes. This, in turn, should not happen. The only known case |
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1718 // when compiler runtime initialization fails is if there is not enough free |
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1719 // space in the code cache to generate the necessary stubs, etc. |
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1720 while (!is_compilation_disabled_forever()) { |
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1721 // We need this HandleMark to avoid leaking VM handles. |
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1722 HandleMark hm(thread); |
0 | 1723 |
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1724 if (CodeCache::unallocated_capacity() < CodeCacheMinimumFreeSpace) { |
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1725 // the code cache is really full |
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1726 handle_full_code_cache(); |
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1727 } |
0 | 1728 |
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1729 CompileTask* task = queue->get(); |
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1730 if (task == NULL) { |
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1731 continue; |
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1732 } |
0 | 1733 |
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1734 // Give compiler threads an extra quanta. They tend to be bursty and |
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1735 // this helps the compiler to finish up the job. |
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1736 if( CompilerThreadHintNoPreempt ) |
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1737 os::hint_no_preempt(); |
0 | 1738 |
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1739 // trace per thread time and compile statistics |
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1740 CompilerCounters* counters = ((CompilerThread*)thread)->counters(); |
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1741 PerfTraceTimedEvent(counters->time_counter(), counters->compile_counter()); |
0 | 1742 |
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1743 // Assign the task to the current thread. Mark this compilation |
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1744 // thread as active for the profiler. |
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1745 CompileTaskWrapper ctw(task); |
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1746 nmethodLocker result_handle; // (handle for the nmethod produced by this task) |
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1747 task->set_code_handle(&result_handle); |
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1748 methodHandle method(thread, task->method()); |
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1749 |
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1750 // Never compile a method if breakpoints are present in it |
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1751 if (method()->number_of_breakpoints() == 0) { |
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1752 // Compile the method. |
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1753 if ((UseCompiler || AlwaysCompileLoopMethods) && CompileBroker::should_compile_new_jobs()) { |
0 | 1754 #ifdef COMPILER1 |
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1755 // Allow repeating compilations for the purpose of benchmarking |
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1756 // compile speed. This is not useful for customers. |
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1757 if (CompilationRepeat != 0) { |
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1758 int compile_count = CompilationRepeat; |
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1759 while (compile_count > 0) { |
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1760 invoke_compiler_on_method(task); |
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1761 nmethod* nm = method->code(); |
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1762 if (nm != NULL) { |
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1763 nm->make_zombie(); |
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1764 method->clear_code(); |
0 | 1765 } |
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1766 compile_count--; |
0 | 1767 } |
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1768 } |
0 | 1769 #endif /* COMPILER1 */ |
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1770 invoke_compiler_on_method(task); |
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1771 } else { |
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1772 // After compilation is disabled, remove remaining methods from queue |
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1773 method->clear_queued_for_compilation(); |
0 | 1774 } |
1775 } | |
1776 } | |
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1777 |
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1778 // Shut down compiler runtime |
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1779 shutdown_compiler_runtime(thread->compiler(), thread); |
0 | 1780 } |
1781 | |
1782 // ------------------------------------------------------------------ | |
1783 // CompileBroker::init_compiler_thread_log | |
1784 // | |
1785 // Set up state required by +LogCompilation. | |
1786 void CompileBroker::init_compiler_thread_log() { | |
1787 CompilerThread* thread = CompilerThread::current(); | |
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1788 char file_name[4*K]; |
0 | 1789 FILE* fp = NULL; |
1790 intx thread_id = os::current_thread_id(); | |
1791 for (int try_temp_dir = 1; try_temp_dir >= 0; try_temp_dir--) { | |
1792 const char* dir = (try_temp_dir ? os::get_temp_directory() : NULL); | |
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1793 if (dir == NULL) { |
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1794 jio_snprintf(file_name, sizeof(file_name), "hs_c" UINTX_FORMAT "_pid%u.log", |
1353
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1795 thread_id, os::current_process_id()); |
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1796 } else { |
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1797 jio_snprintf(file_name, sizeof(file_name), |
1353
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1798 "%s%shs_c" UINTX_FORMAT "_pid%u.log", dir, |
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1799 os::file_separator(), thread_id, os::current_process_id()); |
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1800 } |
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1801 |
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1802 fp = fopen(file_name, "at"); |
0 | 1803 if (fp != NULL) { |
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1804 if (LogCompilation && Verbose) { |
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1805 tty->print_cr("Opening compilation log %s", file_name); |
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1806 } |
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1807 CompileLog* log = new(ResourceObj::C_HEAP, mtCompiler) CompileLog(file_name, fp, thread_id); |
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1808 thread->init_log(log); |
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1809 |
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1810 if (xtty != NULL) { |
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1811 ttyLocker ttyl; |
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1812 // Record any per thread log files |
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1813 xtty->elem("thread_logfile thread='%d' filename='%s'", thread_id, file_name); |
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1814 } |
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1815 return; |
0 | 1816 } |
1817 } | |
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1818 warning("Cannot open log file: %s", file_name); |
0 | 1819 } |
1820 | |
1821 // ------------------------------------------------------------------ | |
1822 // CompileBroker::set_should_block | |
1823 // | |
1824 // Set _should_block. | |
1825 // Call this from the VM, with Threads_lock held and a safepoint requested. | |
1826 void CompileBroker::set_should_block() { | |
1827 assert(Threads_lock->owner() == Thread::current(), "must have threads lock"); | |
1828 assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint already"); | |
1829 #ifndef PRODUCT | |
1830 if (PrintCompilation && (Verbose || WizardMode)) | |
1831 tty->print_cr("notifying compiler thread pool to block"); | |
1832 #endif | |
1833 _should_block = true; | |
1834 } | |
1835 | |
1836 // ------------------------------------------------------------------ | |
1837 // CompileBroker::maybe_block | |
1838 // | |
1839 // Call this from the compiler at convenient points, to poll for _should_block. | |
1840 void CompileBroker::maybe_block() { | |
1841 if (_should_block) { | |
1842 #ifndef PRODUCT | |
1843 if (PrintCompilation && (Verbose || WizardMode)) | |
1844 tty->print_cr("compiler thread " INTPTR_FORMAT " poll detects block request", Thread::current()); | |
1845 #endif | |
1846 ThreadInVMfromNative tivfn(JavaThread::current()); | |
1847 } | |
1848 } | |
1849 | |
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1850 // wrapper for CodeCache::print_summary() |
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1851 static void codecache_print(bool detailed) |
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1852 { |
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1853 ResourceMark rm; |
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1854 stringStream s; |
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1855 // Dump code cache into a buffer before locking the tty, |
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1856 { |
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1857 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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1858 CodeCache::print_summary(&s, detailed); |
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1859 } |
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1860 ttyLocker ttyl; |
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1861 tty->print(s.as_string()); |
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1862 } |
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1863 |
0 | 1864 // ------------------------------------------------------------------ |
1865 // CompileBroker::invoke_compiler_on_method | |
1866 // | |
1867 // Compile a method. | |
1868 // | |
1869 void CompileBroker::invoke_compiler_on_method(CompileTask* task) { | |
1870 if (PrintCompilation) { | |
1871 ResourceMark rm; | |
1872 task->print_line(); | |
1873 } | |
1874 elapsedTimer time; | |
1875 | |
1876 CompilerThread* thread = CompilerThread::current(); | |
1877 ResourceMark rm(thread); | |
1878 | |
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1879 if (LogEvents) { |
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1880 _compilation_log->log_compile(thread, task); |
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1881 } |
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1882 |
0 | 1883 // Common flags. |
1884 uint compile_id = task->compile_id(); | |
1885 int osr_bci = task->osr_bci(); | |
1886 bool is_osr = (osr_bci != standard_entry_bci); | |
1887 bool should_log = (thread->log() != NULL); | |
1888 bool should_break = false; | |
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1889 int task_level = task->comp_level(); |
0 | 1890 { |
1891 // create the handle inside it's own block so it can't | |
1892 // accidentally be referenced once the thread transitions to | |
1893 // native. The NoHandleMark before the transition should catch | |
1894 // any cases where this occurs in the future. | |
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1895 methodHandle method(thread, task->method()); |
0 | 1896 should_break = check_break_at(method, compile_id, is_osr); |
1897 if (should_log && !CompilerOracle::should_log(method)) { | |
1898 should_log = false; | |
1899 } | |
1900 assert(!method->is_native(), "no longer compile natives"); | |
1901 | |
1902 // Save information about this method in case of failure. | |
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1903 set_last_compile(thread, method, is_osr, task_level); |
0 | 1904 |
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1905 DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, compiler_name(task_level)); |
0 | 1906 } |
1907 | |
1908 // Allocate a new set of JNI handles. | |
1909 push_jni_handle_block(); | |
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1910 Method* target_handle = task->method(); |
0 | 1911 int compilable = ciEnv::MethodCompilable; |
1912 { | |
1913 int system_dictionary_modification_counter; | |
1914 { | |
1915 MutexLocker locker(Compile_lock, thread); | |
1916 system_dictionary_modification_counter = SystemDictionary::number_of_modifications(); | |
1917 } | |
1918 | |
1919 NoHandleMark nhm; | |
1920 ThreadToNativeFromVM ttn(thread); | |
1921 | |
1922 ciEnv ci_env(task, system_dictionary_modification_counter); | |
1923 if (should_break) { | |
1924 ci_env.set_break_at_compile(true); | |
1925 } | |
1926 if (should_log) { | |
1927 ci_env.set_log(thread->log()); | |
1928 } | |
1929 assert(thread->env() == &ci_env, "set by ci_env"); | |
1930 // The thread-env() field is cleared in ~CompileTaskWrapper. | |
1931 | |
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1932 // Cache Jvmti state |
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1933 ci_env.cache_jvmti_state(); |
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1934 |
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1935 // Cache DTrace flags |
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1936 ci_env.cache_dtrace_flags(); |
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1937 |
0 | 1938 ciMethod* target = ci_env.get_method_from_handle(target_handle); |
1939 | |
1940 TraceTime t1("compilation", &time); | |
10405 | 1941 EventCompilation event; |
0 | 1942 |
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1943 AbstractCompiler *comp = compiler(task_level); |
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1944 if (comp == NULL) { |
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1945 ci_env.record_method_not_compilable("no compiler", !TieredCompilation); |
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1946 } else { |
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1947 comp->compile_method(&ci_env, target, osr_bci); |
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1948 } |
0 | 1949 |
1950 if (!ci_env.failing() && task->code() == NULL) { | |
1951 //assert(false, "compiler should always document failure"); | |
1952 // The compiler elected, without comment, not to register a result. | |
1953 // Do not attempt further compilations of this method. | |
1964
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1954 ci_env.record_method_not_compilable("compile failed", !TieredCompilation); |
0 | 1955 } |
1956 | |
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1957 // Copy this bit to the enclosing block: |
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1958 compilable = ci_env.compilable(); |
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1959 |
0 | 1960 if (ci_env.failing()) { |
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1961 const char* retry_message = ci_env.retry_message(); |
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1962 if (_compilation_log != NULL) { |
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1963 _compilation_log->log_failure(thread, task, ci_env.failure_reason(), retry_message); |
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1964 } |
0 | 1965 if (PrintCompilation) { |
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1966 FormatBufferResource msg = retry_message != NULL ? |
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1967 err_msg_res("COMPILE SKIPPED: %s (%s)", ci_env.failure_reason(), retry_message) : |
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1968 err_msg_res("COMPILE SKIPPED: %s", ci_env.failure_reason()); |
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1969 task->print_compilation(tty, msg); |
0 | 1970 } |
1971 } else { | |
1972 task->mark_success(); | |
1973 task->set_num_inlined_bytecodes(ci_env.num_inlined_bytecodes()); | |
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1974 if (_compilation_log != NULL) { |
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1975 nmethod* code = task->code(); |
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1976 if (code != NULL) { |
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1977 _compilation_log->log_nmethod(thread, code); |
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1978 } |
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1979 } |
0 | 1980 } |
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1981 // simulate crash during compilation |
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1982 assert(task->compile_id() != CICrashAt, "just as planned"); |
10405 | 1983 if (event.should_commit()) { |
1984 event.set_method(target->get_Method()); | |
1985 event.set_compileID(compile_id); | |
1986 event.set_compileLevel(task->comp_level()); | |
1987 event.set_succeded(task->is_success()); | |
1988 event.set_isOsr(is_osr); | |
1989 event.set_codeSize((task->code() == NULL) ? 0 : task->code()->total_size()); | |
1990 event.set_inlinedBytes(task->num_inlined_bytecodes()); | |
1991 event.commit(); | |
1992 } | |
0 | 1993 } |
1994 pop_jni_handle_block(); | |
1995 | |
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1996 methodHandle method(thread, task->method()); |
0 | 1997 |
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1998 DTRACE_METHOD_COMPILE_END_PROBE(method, compiler_name(task_level), task->is_success()); |
0 | 1999 |
2000 collect_statistics(thread, time, task); | |
2001 | |
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2002 if (PrintCompilation && PrintCompilation2) { |
4047 | 2003 tty->print("%7d ", (int) tty->time_stamp().milliseconds()); // print timestamp |
2004 tty->print("%4d ", compile_id); // print compilation number | |
2005 tty->print("%s ", (is_osr ? "%" : " ")); | |
10278 | 2006 if (task->code() != NULL) { |
2007 tty->print("size: %d(%d) ", task->code()->total_size(), task->code()->insts_size()); | |
2008 } | |
2009 tty->print_cr("time: %d inlined: %d bytes", (int)time.milliseconds(), task->num_inlined_bytecodes()); | |
4047 | 2010 } |
2011 | |
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2012 if (PrintCodeCacheOnCompilation) |
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2013 codecache_print(/* detailed= */ false); |
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2014 |
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2015 // Disable compilation, if required. |
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2016 switch (compilable) { |
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2017 case ciEnv::MethodCompilable_never: |
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2018 if (is_osr) |
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2019 method->set_not_osr_compilable_quietly(); |
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2020 else |
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2021 method->set_not_compilable_quietly(); |
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2022 break; |
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2023 case ciEnv::MethodCompilable_not_at_tier: |
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2024 if (is_osr) |
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2025 method->set_not_osr_compilable_quietly(task_level); |
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2026 else |
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2027 method->set_not_compilable_quietly(task_level); |
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2028 break; |
0 | 2029 } |
2030 | |
2031 // Note that the queued_for_compilation bits are cleared without | |
2032 // protection of a mutex. [They were set by the requester thread, | |
2033 // when adding the task to the complie queue -- at which time the | |
2034 // compile queue lock was held. Subsequently, we acquired the compile | |
2035 // queue lock to get this task off the compile queue; thus (to belabour | |
2036 // the point somewhat) our clearing of the bits must be occurring | |
2037 // only after the setting of the bits. See also 14012000 above. | |
2038 method->clear_queued_for_compilation(); | |
2039 | |
2040 #ifdef ASSERT | |
2041 if (CollectedHeap::fired_fake_oom()) { | |
2042 // The current compile received a fake OOM during compilation so | |
2043 // go ahead and exit the VM since the test apparently succeeded | |
2044 tty->print_cr("*** Shutting down VM after successful fake OOM"); | |
2045 vm_exit(0); | |
2046 } | |
2047 #endif | |
2048 } | |
2049 | |
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2050 /** |
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2051 * The CodeCache is full. Print out warning and disable compilation |
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2052 * or try code cache cleaning so compilation can continue later. |
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2053 */ |
1202 | 2054 void CompileBroker::handle_full_code_cache() { |
2055 UseInterpreter = true; | |
2056 if (UseCompiler || AlwaysCompileLoopMethods ) { | |
1728
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2057 if (xtty != NULL) { |
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2058 ResourceMark rm; |
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2059 stringStream s; |
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2060 // Dump code cache state into a buffer before locking the tty, |
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2061 // because log_state() will use locks causing lock conflicts. |
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2062 CodeCache::log_state(&s); |
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2063 // Lock to prevent tearing |
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2064 ttyLocker ttyl; |
1728
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2065 xtty->begin_elem("code_cache_full"); |
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2066 xtty->print(s.as_string()); |
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2067 xtty->stamp(); |
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2068 xtty->end_elem(); |
1202 | 2069 } |
10405 | 2070 |
2071 CodeCache::report_codemem_full(); | |
2072 | |
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2073 #ifndef PRODUCT |
1202 | 2074 if (CompileTheWorld || ExitOnFullCodeCache) { |
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2075 codecache_print(/* detailed= */ true); |
1202 | 2076 before_exit(JavaThread::current()); |
2077 exit_globals(); // will delete tty | |
2078 vm_direct_exit(CompileTheWorld ? 0 : 1); | |
2079 } | |
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2080 #endif |
1202 | 2081 if (UseCodeCacheFlushing) { |
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2082 // Since code cache is full, immediately stop new compiles |
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2083 if (CompileBroker::set_should_compile_new_jobs(CompileBroker::stop_compilation)) { |
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2084 NMethodSweeper::log_sweep("disable_compiler"); |
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2085 } |
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2086 // Switch to 'vm_state'. This ensures that possibly_sweep() can be called |
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2087 // without having to consider the state in which the current thread is. |
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2088 ThreadInVMfromUnknown in_vm; |
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2089 NMethodSweeper::possibly_sweep(); |
1202 | 2090 } else { |
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2091 disable_compilation_forever(); |
1202 | 2092 } |
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2093 |
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2094 // Print warning only once |
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2095 if (should_print_compiler_warning()) { |
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2096 warning("CodeCache is full. Compiler has been disabled."); |
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2097 warning("Try increasing the code cache size using -XX:ReservedCodeCacheSize="); |
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2098 codecache_print(/* detailed= */ true); |
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2099 } |
1202 | 2100 } |
2101 } | |
2102 | |
2103 // ------------------------------------------------------------------ | |
0 | 2104 // CompileBroker::set_last_compile |
2105 // | |
2106 // Record this compilation for debugging purposes. | |
2107 void CompileBroker::set_last_compile(CompilerThread* thread, methodHandle method, bool is_osr, int comp_level) { | |
2108 ResourceMark rm; | |
2109 char* method_name = method->name()->as_C_string(); | |
2110 strncpy(_last_method_compiled, method_name, CompileBroker::name_buffer_length); | |
2111 char current_method[CompilerCounters::cmname_buffer_length]; | |
2112 size_t maxLen = CompilerCounters::cmname_buffer_length; | |
2113 | |
2114 if (UsePerfData) { | |
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2115 const char* class_name = method->method_holder()->name()->as_C_string(); |
0 | 2116 |
2117 size_t s1len = strlen(class_name); | |
2118 size_t s2len = strlen(method_name); | |
2119 | |
2120 // check if we need to truncate the string | |
2121 if (s1len + s2len + 2 > maxLen) { | |
2122 | |
2123 // the strategy is to lop off the leading characters of the | |
2124 // class name and the trailing characters of the method name. | |
2125 | |
2126 if (s2len + 2 > maxLen) { | |
2127 // lop of the entire class name string, let snprintf handle | |
2128 // truncation of the method name. | |
2129 class_name += s1len; // null string | |
2130 } | |
2131 else { | |
2132 // lop off the extra characters from the front of the class name | |
2133 class_name += ((s1len + s2len + 2) - maxLen); | |
2134 } | |
2135 } | |
2136 | |
2137 jio_snprintf(current_method, maxLen, "%s %s", class_name, method_name); | |
2138 } | |
2139 | |
2140 if (CICountOSR && is_osr) { | |
2141 _last_compile_type = osr_compile; | |
2142 } else { | |
2143 _last_compile_type = normal_compile; | |
2144 } | |
2145 _last_compile_level = comp_level; | |
2146 | |
2147 if (UsePerfData) { | |
2148 CompilerCounters* counters = thread->counters(); | |
2149 counters->set_current_method(current_method); | |
2150 counters->set_compile_type((jlong)_last_compile_type); | |
2151 } | |
2152 } | |
2153 | |
2154 | |
2155 // ------------------------------------------------------------------ | |
2156 // CompileBroker::push_jni_handle_block | |
2157 // | |
2158 // Push on a new block of JNI handles. | |
2159 void CompileBroker::push_jni_handle_block() { | |
2160 JavaThread* thread = JavaThread::current(); | |
2161 | |
2162 // Allocate a new block for JNI handles. | |
2163 // Inlined code from jni_PushLocalFrame() | |
2164 JNIHandleBlock* java_handles = thread->active_handles(); | |
2165 JNIHandleBlock* compile_handles = JNIHandleBlock::allocate_block(thread); | |
2166 assert(compile_handles != NULL && java_handles != NULL, "should not be NULL"); | |
2167 compile_handles->set_pop_frame_link(java_handles); // make sure java handles get gc'd. | |
2168 thread->set_active_handles(compile_handles); | |
2169 } | |
2170 | |
2171 | |
2172 // ------------------------------------------------------------------ | |
2173 // CompileBroker::pop_jni_handle_block | |
2174 // | |
2175 // Pop off the current block of JNI handles. | |
2176 void CompileBroker::pop_jni_handle_block() { | |
2177 JavaThread* thread = JavaThread::current(); | |
2178 | |
2179 // Release our JNI handle block | |
2180 JNIHandleBlock* compile_handles = thread->active_handles(); | |
2181 JNIHandleBlock* java_handles = compile_handles->pop_frame_link(); | |
2182 thread->set_active_handles(java_handles); | |
2183 compile_handles->set_pop_frame_link(NULL); | |
2184 JNIHandleBlock::release_block(compile_handles, thread); // may block | |
2185 } | |
2186 | |
2187 | |
2188 // ------------------------------------------------------------------ | |
2189 // CompileBroker::check_break_at | |
2190 // | |
2191 // Should the compilation break at the current compilation. | |
2192 bool CompileBroker::check_break_at(methodHandle method, int compile_id, bool is_osr) { | |
2193 if (CICountOSR && is_osr && (compile_id == CIBreakAtOSR)) { | |
2194 return true; | |
2195 } else if( CompilerOracle::should_break_at(method) ) { // break when compiling | |
2196 return true; | |
2197 } else { | |
2198 return (compile_id == CIBreakAt); | |
2199 } | |
2200 } | |
2201 | |
2202 // ------------------------------------------------------------------ | |
2203 // CompileBroker::collect_statistics | |
2204 // | |
2205 // Collect statistics about the compilation. | |
2206 | |
2207 void CompileBroker::collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task) { | |
2208 bool success = task->is_success(); | |
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2209 methodHandle method (thread, task->method()); |
0 | 2210 uint compile_id = task->compile_id(); |
2211 bool is_osr = (task->osr_bci() != standard_entry_bci); | |
2212 nmethod* code = task->code(); | |
2213 CompilerCounters* counters = thread->counters(); | |
2214 | |
2215 assert(code == NULL || code->is_locked_by_vm(), "will survive the MutexLocker"); | |
2216 MutexLocker locker(CompileStatistics_lock); | |
2217 | |
2218 // _perf variables are production performance counters which are | |
2219 // updated regardless of the setting of the CITime and CITimeEach flags | |
2220 // | |
2221 if (!success) { | |
2222 _total_bailout_count++; | |
2223 if (UsePerfData) { | |
2224 _perf_last_failed_method->set_value(counters->current_method()); | |
2225 _perf_last_failed_type->set_value(counters->compile_type()); | |
2226 _perf_total_bailout_count->inc(); | |
2227 } | |
2228 } else if (code == NULL) { | |
2229 if (UsePerfData) { | |
2230 _perf_last_invalidated_method->set_value(counters->current_method()); | |
2231 _perf_last_invalidated_type->set_value(counters->compile_type()); | |
2232 _perf_total_invalidated_count->inc(); | |
2233 } | |
2234 _total_invalidated_count++; | |
2235 } else { | |
2236 // Compilation succeeded | |
2237 | |
2238 // update compilation ticks - used by the implementation of | |
2239 // java.lang.management.CompilationMBean | |
2240 _perf_total_compilation->inc(time.ticks()); | |
2241 | |
10405 | 2242 _t_total_compilation.add(time); |
2243 _peak_compilation_time = time.milliseconds() > _peak_compilation_time ? time.milliseconds() : _peak_compilation_time; | |
2244 | |
0 | 2245 if (CITime) { |
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2246 int bytes_compiled = method->code_size() + task->num_inlined_bytecodes(); |
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2247 GRAAL_ONLY(CompilerStatistics* stats = compiler(task->comp_level())->stats();) |
0 | 2248 if (is_osr) { |
2249 _t_osr_compilation.add(time); | |
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2250 _sum_osr_bytes_compiled += bytes_compiled; |
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2251 GRAAL_ONLY(stats->_osr.update(time, bytes_compiled);) |
0 | 2252 } else { |
2253 _t_standard_compilation.add(time); | |
2254 _sum_standard_bytes_compiled += method->code_size() + task->num_inlined_bytecodes(); | |
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2255 GRAAL_ONLY(stats->_standard.update(time, bytes_compiled);) |
0 | 2256 } |
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2257 GRAAL_ONLY(stats->_nmethods_size += code->total_size();) |
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2258 GRAAL_ONLY(stats->_nmethods_code_size += code->insts_size();) |
0 | 2259 } |
2260 | |
2261 if (UsePerfData) { | |
2262 // save the name of the last method compiled | |
2263 _perf_last_method->set_value(counters->current_method()); | |
2264 _perf_last_compile_type->set_value(counters->compile_type()); | |
2265 _perf_last_compile_size->set_value(method->code_size() + | |
2266 task->num_inlined_bytecodes()); | |
2267 if (is_osr) { | |
2268 _perf_osr_compilation->inc(time.ticks()); | |
2269 _perf_sum_osr_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes()); | |
2270 } else { | |
2271 _perf_standard_compilation->inc(time.ticks()); | |
2272 _perf_sum_standard_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes()); | |
2273 } | |
2274 } | |
2275 | |
2276 if (CITimeEach) { | |
2277 float bytes_per_sec = 1.0 * (method->code_size() + task->num_inlined_bytecodes()) / time.seconds(); | |
2278 tty->print_cr("%3d seconds: %f bytes/sec : %f (bytes %d + %d inlined)", | |
2279 compile_id, time.seconds(), bytes_per_sec, method->code_size(), task->num_inlined_bytecodes()); | |
2280 } | |
2281 | |
2282 // Collect counts of successful compilations | |
1748 | 2283 _sum_nmethod_size += code->total_size(); |
2284 _sum_nmethod_code_size += code->insts_size(); | |
0 | 2285 _total_compile_count++; |
2286 | |
2287 if (UsePerfData) { | |
1748 | 2288 _perf_sum_nmethod_size->inc( code->total_size()); |
2289 _perf_sum_nmethod_code_size->inc(code->insts_size()); | |
0 | 2290 _perf_total_compile_count->inc(); |
2291 } | |
2292 | |
2293 if (is_osr) { | |
2294 if (UsePerfData) _perf_total_osr_compile_count->inc(); | |
2295 _total_osr_compile_count++; | |
2296 } else { | |
2297 if (UsePerfData) _perf_total_standard_compile_count->inc(); | |
2298 _total_standard_compile_count++; | |
2299 } | |
2300 } | |
2301 // set the current method for the thread to null | |
2302 if (UsePerfData) counters->set_current_method(""); | |
2303 } | |
2304 | |
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2305 const char* CompileBroker::compiler_name(int comp_level) { |
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2306 AbstractCompiler *comp = CompileBroker::compiler(comp_level); |
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2307 if (comp == NULL) { |
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2308 return "no compiler"; |
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2309 } else { |
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2310 return (comp->name()); |
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2311 } |
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2312 } |
0 | 2313 |
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2314 void CompileBroker::print_times(bool per_compiler, bool aggregate) { |
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2315 #ifdef GRAAL |
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2316 elapsedTimer standard_compilation; |
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|
2317 elapsedTimer total_compilation; |
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|
2318 elapsedTimer osr_compilation; |
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2319 |
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2320 int standard_bytes_compiled = 0; |
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2321 int osr_bytes_compiled = 0; |
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2322 |
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2323 int standard_compile_count = 0; |
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2324 int osr_compile_count = 0; |
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2325 int total_compile_count = 0; |
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2326 |
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2327 int nmethods_size = 0; |
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2328 int nmethods_code_size = 0; |
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2329 bool printedHeader = false; |
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2330 |
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2331 for (unsigned int i = 0; i < sizeof(_compilers) / sizeof(AbstractCompiler*); i++) { |
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2332 AbstractCompiler* comp = _compilers[i]; |
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2333 if (comp != NULL) { |
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2334 if (per_compiler && aggregate && !printedHeader) { |
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2335 printedHeader = true; |
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2336 tty->cr(); |
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2337 tty->print_cr("Individual compiler times (for compiled methods only)"); |
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2338 tty->print_cr("------------------------------------------------"); |
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2339 tty->cr(); |
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2340 } |
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2341 CompilerStatistics* stats = comp->stats(); |
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2342 |
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2343 standard_compilation.add(stats->_standard._time); |
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2344 osr_compilation.add(stats->_osr._time); |
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2345 |
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|
2346 standard_bytes_compiled += stats->_standard._bytes; |
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2347 osr_bytes_compiled += stats->_osr._bytes; |
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made Graal report its compilation info under -XX:+CITime in the same format as c1 and c2
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2348 |
f6c511451e4a
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|
2349 standard_compile_count += stats->_standard._count; |
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2350 osr_compile_count += stats->_osr._count; |
f6c511451e4a
made Graal report its compilation info under -XX:+CITime in the same format as c1 and c2
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2351 |
f6c511451e4a
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2352 nmethods_size += stats->_nmethods_size; |
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2353 nmethods_code_size += stats->_nmethods_code_size; |
f6c511451e4a
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Doug Simon <doug.simon@oracle.com>
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2354 |
13364
5a4293f24642
added -G:PrintCompRate option for periodically printing out the current compilation rate
Doug Simon <doug.simon@oracle.com>
parents:
13107
diff
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|
2355 if (per_compiler) { |
13107
91933915d1d0
minor fix to output format of CITime
Doug Simon <doug.simon@oracle.com>
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13089
diff
changeset
|
2356 tty->print_cr(" %s {speed: %d bytes/s; standard: %6.3f s, %d bytes, %d methods; osr: %6.3f s, %d bytes, %d methods; nmethods_size: %d bytes; nmethods_code_size: %d bytes}", |
12779
f6c511451e4a
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2357 comp->name(), stats->bytes_per_second(), |
f6c511451e4a
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2358 stats->_standard._time.seconds(), stats->_standard._bytes, stats->_standard._count, |
f6c511451e4a
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2359 stats->_osr._time.seconds(), stats->_osr._bytes, stats->_osr._count, |
f6c511451e4a
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|
2360 stats->_nmethods_size, stats->_nmethods_code_size); |
13364
5a4293f24642
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parents:
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|
2361 } |
12779
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2362 } |
f6c511451e4a
made Graal report its compilation info under -XX:+CITime in the same format as c1 and c2
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2363 } |
f6c511451e4a
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2364 total_compile_count = osr_compile_count + standard_compile_count; |
f6c511451e4a
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2365 total_compilation.add(osr_compilation); |
f6c511451e4a
made Graal report its compilation info under -XX:+CITime in the same format as c1 and c2
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2366 total_compilation.add(standard_compilation); |
f6c511451e4a
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2367 #else |
f6c511451e4a
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2368 elapsedTimer standard_compilation = CompileBroker::_t_standard_compilation; |
f6c511451e4a
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2369 elapsedTimer osr_compilation = CompileBroker::_t_osr_compilation; |
f6c511451e4a
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2370 elapsedTimer total_compilation = CompileBroker::_t_total_compilation; |
f6c511451e4a
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|
2371 |
f6c511451e4a
made Graal report its compilation info under -XX:+CITime in the same format as c1 and c2
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2372 int standard_bytes_compiled = CompileBroker::_sum_standard_bytes_compiled; |
f6c511451e4a
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2373 int osr_bytes_compiled = CompileBroker::_sum_osr_bytes_compiled; |
f6c511451e4a
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|
2374 |
f6c511451e4a
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diff
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2375 int standard_compile_count = CompileBroker::_total_standard_compile_count; |
f6c511451e4a
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2376 int osr_compile_count = CompileBroker::_total_osr_compile_count; |
f6c511451e4a
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|
2377 int total_compile_count = CompileBroker::_total_compile_count; |
f6c511451e4a
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|
2378 |
f6c511451e4a
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2379 int nmethods_size = CompileBroker::_sum_nmethod_code_size; |
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2380 int nmethods_code_size = CompileBroker::_sum_nmethod_size; |
f6c511451e4a
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|
2381 #endif |
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|
2382 |
13364
5a4293f24642
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diff
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|
2383 if (!aggregate) { |
5a4293f24642
added -G:PrintCompRate option for periodically printing out the current compilation rate
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|
2384 return; |
5a4293f24642
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diff
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|
2385 } |
0 | 2386 tty->cr(); |
2387 tty->print_cr("Accumulated compiler times (for compiled methods only)"); | |
2388 tty->print_cr("------------------------------------------------"); | |
2389 //0000000000111111111122222222223333333333444444444455555555556666666666 | |
2390 //0123456789012345678901234567890123456789012345678901234567890123456789 | |
12779
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|
2391 tty->print_cr(" Total compilation time : %6.3f s", total_compilation.seconds()); |
0 | 2392 tty->print_cr(" Standard compilation : %6.3f s, Average : %2.3f", |
12779
f6c511451e4a
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diff
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|
2393 standard_compilation.seconds(), |
f6c511451e4a
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|
2394 standard_compilation.seconds() / standard_compile_count); |
f6c511451e4a
made Graal report its compilation info under -XX:+CITime in the same format as c1 and c2
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|
2395 tty->print_cr(" On stack replacement : %6.3f s, Average : %2.3f", osr_compilation.seconds(), osr_compilation.seconds() / osr_compile_count); |
1131 | 2396 |
8771
75a28f465a12
8008663: [parfait] Null pointer deference in hotspot/src/share/vm/compiler/compileBroker.cpp
morris
parents:
8730
diff
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|
2397 AbstractCompiler *comp = compiler(CompLevel_simple); |
75a28f465a12
8008663: [parfait] Null pointer deference in hotspot/src/share/vm/compiler/compileBroker.cpp
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8730
diff
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|
2398 if (comp != NULL) { |
75a28f465a12
8008663: [parfait] Null pointer deference in hotspot/src/share/vm/compiler/compileBroker.cpp
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diff
changeset
|
2399 comp->print_timers(); |
0 | 2400 } |
8771
75a28f465a12
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morris
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diff
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|
2401 comp = compiler(CompLevel_full_optimization); |
75a28f465a12
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morris
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diff
changeset
|
2402 if (comp != NULL) { |
75a28f465a12
8008663: [parfait] Null pointer deference in hotspot/src/share/vm/compiler/compileBroker.cpp
morris
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|
2403 comp->print_timers(); |
1783 | 2404 } |
0 | 2405 tty->cr(); |
12779
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|
2406 tty->print_cr(" Total compiled methods : %6d methods", total_compile_count); |
f6c511451e4a
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|
2407 tty->print_cr(" Standard compilation : %6d methods", standard_compile_count); |
f6c511451e4a
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|
2408 tty->print_cr(" On stack replacement : %6d methods", osr_compile_count); |
f6c511451e4a
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|
2409 int tcb = osr_bytes_compiled + standard_bytes_compiled; |
0 | 2410 tty->print_cr(" Total compiled bytecodes : %6d bytes", tcb); |
12779
f6c511451e4a
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|
2411 tty->print_cr(" Standard compilation : %6d bytes", standard_bytes_compiled); |
f6c511451e4a
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|
2412 tty->print_cr(" On stack replacement : %6d bytes", osr_bytes_compiled); |
f6c511451e4a
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|
2413 double tcs = total_compilation.seconds(); |
7568
140d4d4ab3b9
added per-compiler compilation speed statistics for C1 and C2 (included in output produced by -XX:+CITime)
Doug Simon <doug.simon@oracle.com>
parents:
7482
diff
changeset
|
2414 int bps = tcs == 0.0 ? 0 : (int)(tcb / tcs); |
0 | 2415 tty->print_cr(" Average compilation speed: %6d bytes/s", bps); |
2416 tty->cr(); | |
12779
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|
2417 tty->print_cr(" nmethod code size : %6d bytes", nmethods_code_size); |
f6c511451e4a
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|
2418 tty->print_cr(" nmethod total size : %6d bytes", nmethods_size); |
0 | 2419 } |
2420 | |
2421 // Debugging output for failure | |
2422 void CompileBroker::print_last_compile() { | |
2423 if ( _last_compile_level != CompLevel_none && | |
2424 compiler(_last_compile_level) != NULL && | |
2425 _last_method_compiled != NULL && | |
2426 _last_compile_type != no_compile) { | |
2427 if (_last_compile_type == osr_compile) { | |
2428 tty->print_cr("Last parse: [osr]%d+++(%d) %s", | |
2429 _osr_compilation_id, _last_compile_level, _last_method_compiled); | |
2430 } else { | |
2431 tty->print_cr("Last parse: %d+++(%d) %s", | |
2432 _compilation_id, _last_compile_level, _last_method_compiled); | |
2433 } | |
2434 } | |
2435 } | |
2436 | |
2437 | |
2438 void CompileBroker::print_compiler_threads_on(outputStream* st) { | |
2439 #ifndef PRODUCT | |
2440 st->print_cr("Compiler thread printing unimplemented."); | |
2441 st->cr(); | |
2442 #endif | |
2443 } |