Mercurial > hg > truffle
annotate src/share/vm/compiler/compileBroker.cpp @ 7125:1baf7f1e3f23
decoupled C++ Graal runtime from C1
author | Doug Simon <doug.simon@oracle.com> |
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date | Mon, 03 Dec 2012 15:32:17 +0100 |
parents | e522a00b91aa |
children | 5d0bb7d52783 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1999, 2012, 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" | |
46 #include "utilities/dtrace.hpp" | |
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47 #ifdef GRAAL |
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48 #include "graal/graalCompiler.hpp" |
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49 #endif |
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50 #include "utilities/events.hpp" |
1972 | 51 #ifdef COMPILER1 |
52 #include "c1/c1_Compiler.hpp" | |
53 #endif | |
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54 #ifdef GRAAL |
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55 #include "graal/graalCompiler.hpp" |
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56 #endif |
1972 | 57 #ifdef COMPILER2 |
58 #include "opto/c2compiler.hpp" | |
59 #endif | |
60 #ifdef SHARK | |
61 #include "shark/sharkCompiler.hpp" | |
62 #endif | |
0 | 63 |
64 #ifdef DTRACE_ENABLED | |
65 | |
66 // Only bother with this argument setup if dtrace is available | |
67 | |
4006 | 68 #ifndef USDT2 |
0 | 69 HS_DTRACE_PROBE_DECL8(hotspot, method__compile__begin, |
70 char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t); | |
71 HS_DTRACE_PROBE_DECL9(hotspot, method__compile__end, | |
72 char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t, bool); | |
73 | |
74 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method) \ | |
75 { \ | |
76 char* comp_name = (char*)(compiler)->name(); \ | |
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77 Symbol* klass_name = (method)->klass_name(); \ |
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78 Symbol* name = (method)->name(); \ |
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79 Symbol* signature = (method)->signature(); \ |
0 | 80 HS_DTRACE_PROBE8(hotspot, method__compile__begin, \ |
81 comp_name, strlen(comp_name), \ | |
82 klass_name->bytes(), klass_name->utf8_length(), \ | |
83 name->bytes(), name->utf8_length(), \ | |
84 signature->bytes(), signature->utf8_length()); \ | |
85 } | |
86 | |
87 #define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, success) \ | |
88 { \ | |
89 char* comp_name = (char*)(compiler)->name(); \ | |
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90 Symbol* klass_name = (method)->klass_name(); \ |
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91 Symbol* name = (method)->name(); \ |
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92 Symbol* signature = (method)->signature(); \ |
0 | 93 HS_DTRACE_PROBE9(hotspot, method__compile__end, \ |
94 comp_name, strlen(comp_name), \ | |
95 klass_name->bytes(), klass_name->utf8_length(), \ | |
96 name->bytes(), name->utf8_length(), \ | |
97 signature->bytes(), signature->utf8_length(), (success)); \ | |
98 } | |
99 | |
4006 | 100 #else /* USDT2 */ |
101 | |
102 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method) \ | |
103 { \ | |
104 char* comp_name = (char*)(compiler)->name(); \ | |
105 Symbol* klass_name = (method)->klass_name(); \ | |
106 Symbol* name = (method)->name(); \ | |
107 Symbol* signature = (method)->signature(); \ | |
108 HOTSPOT_METHOD_COMPILE_BEGIN( \ | |
109 comp_name, strlen(comp_name), \ | |
110 (char *) klass_name->bytes(), klass_name->utf8_length(), \ | |
111 (char *) name->bytes(), name->utf8_length(), \ | |
112 (char *) signature->bytes(), signature->utf8_length()); \ | |
113 } | |
114 | |
115 #define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, success) \ | |
116 { \ | |
117 char* comp_name = (char*)(compiler)->name(); \ | |
118 Symbol* klass_name = (method)->klass_name(); \ | |
119 Symbol* name = (method)->name(); \ | |
120 Symbol* signature = (method)->signature(); \ | |
121 HOTSPOT_METHOD_COMPILE_END( \ | |
122 comp_name, strlen(comp_name), \ | |
123 (char *) klass_name->bytes(), klass_name->utf8_length(), \ | |
124 (char *) name->bytes(), name->utf8_length(), \ | |
125 (char *) signature->bytes(), signature->utf8_length(), (success)); \ | |
126 } | |
127 #endif /* USDT2 */ | |
128 | |
0 | 129 #else // ndef DTRACE_ENABLED |
130 | |
131 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method) | |
132 #define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, success) | |
133 | |
134 #endif // ndef DTRACE_ENABLED | |
135 | |
136 bool CompileBroker::_initialized = false; | |
137 volatile bool CompileBroker::_should_block = false; | |
1202 | 138 volatile jint CompileBroker::_should_compile_new_jobs = run_compilation; |
0 | 139 |
140 // The installed compiler(s) | |
141 AbstractCompiler* CompileBroker::_compilers[2]; | |
142 | |
143 // These counters are used for assigning id's to each compilation | |
144 uint CompileBroker::_compilation_id = 0; | |
145 uint CompileBroker::_osr_compilation_id = 0; | |
146 | |
147 // Debugging information | |
148 int CompileBroker::_last_compile_type = no_compile; | |
149 int CompileBroker::_last_compile_level = CompLevel_none; | |
150 char CompileBroker::_last_method_compiled[CompileBroker::name_buffer_length]; | |
151 | |
152 // Performance counters | |
153 PerfCounter* CompileBroker::_perf_total_compilation = NULL; | |
154 PerfCounter* CompileBroker::_perf_osr_compilation = NULL; | |
155 PerfCounter* CompileBroker::_perf_standard_compilation = NULL; | |
156 | |
157 PerfCounter* CompileBroker::_perf_total_bailout_count = NULL; | |
158 PerfCounter* CompileBroker::_perf_total_invalidated_count = NULL; | |
159 PerfCounter* CompileBroker::_perf_total_compile_count = NULL; | |
160 PerfCounter* CompileBroker::_perf_total_osr_compile_count = NULL; | |
161 PerfCounter* CompileBroker::_perf_total_standard_compile_count = NULL; | |
162 | |
163 PerfCounter* CompileBroker::_perf_sum_osr_bytes_compiled = NULL; | |
164 PerfCounter* CompileBroker::_perf_sum_standard_bytes_compiled = NULL; | |
165 PerfCounter* CompileBroker::_perf_sum_nmethod_size = NULL; | |
166 PerfCounter* CompileBroker::_perf_sum_nmethod_code_size = NULL; | |
167 | |
168 PerfStringVariable* CompileBroker::_perf_last_method = NULL; | |
169 PerfStringVariable* CompileBroker::_perf_last_failed_method = NULL; | |
170 PerfStringVariable* CompileBroker::_perf_last_invalidated_method = NULL; | |
171 PerfVariable* CompileBroker::_perf_last_compile_type = NULL; | |
172 PerfVariable* CompileBroker::_perf_last_compile_size = NULL; | |
173 PerfVariable* CompileBroker::_perf_last_failed_type = NULL; | |
174 PerfVariable* CompileBroker::_perf_last_invalidated_type = NULL; | |
175 | |
176 // Timers and counters for generating statistics | |
177 elapsedTimer CompileBroker::_t_total_compilation; | |
178 elapsedTimer CompileBroker::_t_osr_compilation; | |
179 elapsedTimer CompileBroker::_t_standard_compilation; | |
180 | |
181 int CompileBroker::_total_bailout_count = 0; | |
182 int CompileBroker::_total_invalidated_count = 0; | |
183 int CompileBroker::_total_compile_count = 0; | |
184 int CompileBroker::_total_osr_compile_count = 0; | |
185 int CompileBroker::_total_standard_compile_count = 0; | |
186 | |
187 int CompileBroker::_sum_osr_bytes_compiled = 0; | |
188 int CompileBroker::_sum_standard_bytes_compiled = 0; | |
189 int CompileBroker::_sum_nmethod_size = 0; | |
190 int CompileBroker::_sum_nmethod_code_size = 0; | |
191 | |
1783 | 192 CompileQueue* CompileBroker::_c2_method_queue = NULL; |
193 CompileQueue* CompileBroker::_c1_method_queue = NULL; | |
0 | 194 CompileTask* CompileBroker::_task_free_list = NULL; |
195 | |
196 GrowableArray<CompilerThread*>* CompileBroker::_method_threads = NULL; | |
197 | |
198 | |
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199 class CompilationLog : public StringEventLog { |
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200 public: |
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201 CompilationLog() : StringEventLog("Compilation events") { |
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202 } |
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203 |
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204 void log_compile(JavaThread* thread, CompileTask* task) { |
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205 StringLogMessage lm; |
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206 stringStream sstr = lm.stream(); |
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207 // msg.time_stamp().update_to(tty->time_stamp().ticks()); |
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208 task->print_compilation(&sstr, NULL, true); |
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209 log(thread, "%s", (const char*)lm); |
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210 } |
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211 |
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212 void log_nmethod(JavaThread* thread, nmethod* nm) { |
4944 | 213 log(thread, "nmethod %d%s " INTPTR_FORMAT " code ["INTPTR_FORMAT ", " INTPTR_FORMAT "]", |
214 nm->compile_id(), nm->is_osr_method() ? "%" : "", | |
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215 nm, nm->code_begin(), nm->code_end()); |
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216 } |
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217 |
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218 void log_failure(JavaThread* thread, CompileTask* task, const char* reason, const char* retry_message) { |
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219 StringLogMessage lm; |
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220 lm.print("%4d COMPILE SKIPPED: %s", task->compile_id(), reason); |
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221 if (retry_message != NULL) { |
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222 lm.append(" (%s)", retry_message); |
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223 } |
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224 lm.print("\n"); |
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225 log(thread, "%s", (const char*)lm); |
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226 } |
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227 }; |
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228 |
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229 static CompilationLog* _compilation_log = NULL; |
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230 |
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231 void compileBroker_init() { |
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232 if (LogEvents) { |
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233 _compilation_log = new CompilationLog(); |
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234 } |
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235 } |
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236 |
0 | 237 CompileTaskWrapper::CompileTaskWrapper(CompileTask* task) { |
238 CompilerThread* thread = CompilerThread::current(); | |
239 thread->set_task(task); | |
240 CompileLog* log = thread->log(); | |
241 if (log != NULL) task->log_task_start(log); | |
242 } | |
243 | |
244 CompileTaskWrapper::~CompileTaskWrapper() { | |
245 CompilerThread* thread = CompilerThread::current(); | |
246 CompileTask* task = thread->task(); | |
247 CompileLog* log = thread->log(); | |
248 if (log != NULL) task->log_task_done(log); | |
249 thread->set_task(NULL); | |
250 task->set_code_handle(NULL); | |
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251 thread->set_env(NULL); |
0 | 252 if (task->is_blocking()) { |
253 MutexLocker notifier(task->lock(), thread); | |
254 task->mark_complete(); | |
255 // Notify the waiting thread that the compilation has completed. | |
256 task->lock()->notify_all(); | |
257 } else { | |
258 task->mark_complete(); | |
259 | |
260 // By convention, the compiling thread is responsible for | |
261 // recycling a non-blocking CompileTask. | |
262 CompileBroker::free_task(task); | |
263 } | |
264 } | |
265 | |
266 | |
267 // ------------------------------------------------------------------ | |
268 // CompileTask::initialize | |
269 void CompileTask::initialize(int compile_id, | |
270 methodHandle method, | |
271 int osr_bci, | |
272 int comp_level, | |
273 methodHandle hot_method, | |
274 int hot_count, | |
275 const char* comment, | |
276 bool is_blocking) { | |
277 assert(!_lock->is_locked(), "bad locking"); | |
278 | |
279 _compile_id = compile_id; | |
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280 _method = method(); |
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281 _method_loader = JNIHandles::make_global(_method->method_holder()->class_loader()); |
0 | 282 _osr_bci = osr_bci; |
283 _is_blocking = is_blocking; | |
284 _comp_level = comp_level; | |
285 _num_inlined_bytecodes = 0; | |
286 | |
287 _is_complete = false; | |
288 _is_success = false; | |
289 _code_handle = NULL; | |
290 | |
291 _hot_method = NULL; | |
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292 _hot_method_loader = NULL; |
0 | 293 _hot_count = hot_count; |
294 _time_queued = 0; // tidy | |
295 _comment = comment; | |
296 | |
297 if (LogCompilation) { | |
298 _time_queued = os::elapsed_counter(); | |
299 if (hot_method.not_null()) { | |
300 if (hot_method == method) { | |
301 _hot_method = _method; | |
302 } else { | |
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303 _hot_method = hot_method(); |
0 | 304 } |
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305 _hot_method_loader = JNIHandles::make_global(_hot_method->method_holder()->class_loader()); |
0 | 306 } |
307 } | |
308 | |
309 _next = NULL; | |
310 } | |
311 | |
312 // ------------------------------------------------------------------ | |
313 // CompileTask::code/set_code | |
314 nmethod* CompileTask::code() const { | |
315 if (_code_handle == NULL) return NULL; | |
316 return _code_handle->code(); | |
317 } | |
318 void CompileTask::set_code(nmethod* nm) { | |
319 if (_code_handle == NULL && nm == NULL) return; | |
320 guarantee(_code_handle != NULL, ""); | |
321 _code_handle->set_code(nm); | |
322 if (nm == NULL) _code_handle = NULL; // drop the handle also | |
323 } | |
324 | |
325 // ------------------------------------------------------------------ | |
326 // CompileTask::free | |
327 void CompileTask::free() { | |
328 set_code(NULL); | |
329 assert(!_lock->is_locked(), "Should not be locked when freed"); | |
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330 JNIHandles::destroy_global(_method_loader); |
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331 JNIHandles::destroy_global(_hot_method_loader); |
0 | 332 } |
333 | |
334 | |
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335 void CompileTask::mark_on_stack() { |
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336 // Mark these methods as something redefine classes cannot remove. |
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337 _method->set_on_stack(true); |
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338 if (_hot_method != NULL) { |
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339 _hot_method->set_on_stack(true); |
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340 } |
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341 } |
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342 |
0 | 343 // ------------------------------------------------------------------ |
344 // CompileTask::print | |
345 void CompileTask::print() { | |
346 tty->print("<CompileTask compile_id=%d ", _compile_id); | |
347 tty->print("method="); | |
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348 _method->print_name(tty); |
0 | 349 tty->print_cr(" osr_bci=%d is_blocking=%s is_complete=%s is_success=%s>", |
350 _osr_bci, bool_to_str(_is_blocking), | |
351 bool_to_str(_is_complete), bool_to_str(_is_success)); | |
352 } | |
353 | |
1783 | 354 |
0 | 355 // ------------------------------------------------------------------ |
356 // CompileTask::print_line_on_error | |
357 // | |
358 // This function is called by fatal error handler when the thread | |
359 // causing troubles is a compiler thread. | |
360 // | |
361 // Do not grab any lock, do not allocate memory. | |
362 // | |
363 // Otherwise it's the same as CompileTask::print_line() | |
364 // | |
365 void CompileTask::print_line_on_error(outputStream* st, char* buf, int buflen) { | |
366 // print compiler name | |
367 st->print("%s:", CompileBroker::compiler(comp_level())->name()); | |
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368 print_compilation(st); |
0 | 369 } |
370 | |
371 // ------------------------------------------------------------------ | |
372 // CompileTask::print_line | |
373 void CompileTask::print_line() { | |
374 ttyLocker ttyl; // keep the following output all in one block | |
375 // print compiler name if requested | |
376 if (CIPrintCompilerName) tty->print("%s:", CompileBroker::compiler(comp_level())->name()); | |
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377 print_compilation(); |
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378 } |
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379 |
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380 |
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381 // ------------------------------------------------------------------ |
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382 // CompileTask::print_compilation_impl |
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383 void CompileTask::print_compilation_impl(outputStream* st, Method* method, int compile_id, int comp_level, |
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384 bool is_osr_method, int osr_bci, bool is_blocking, |
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385 const char* msg, bool short_form) { |
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386 if (!short_form) { |
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387 st->print("%7d ", (int) st->time_stamp().milliseconds()); // print timestamp |
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388 } |
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389 st->print("%4d ", compile_id); // print compilation number |
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390 |
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391 // For unloaded methods the transition to zombie occurs after the |
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392 // method is cleared so it's impossible to report accurate |
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393 // information for that case. |
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394 bool is_synchronized = false; |
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395 bool has_exception_handler = false; |
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396 bool is_native = false; |
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397 if (method != NULL) { |
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398 is_synchronized = method->is_synchronized(); |
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399 has_exception_handler = method->has_exception_handler(); |
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400 is_native = method->is_native(); |
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401 } |
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402 // method attributes |
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403 const char compile_type = is_osr_method ? '%' : ' '; |
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404 const char sync_char = is_synchronized ? 's' : ' '; |
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405 const char exception_char = has_exception_handler ? '!' : ' '; |
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406 const char blocking_char = is_blocking ? 'b' : ' '; |
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407 const char native_char = is_native ? 'n' : ' '; |
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408 |
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409 // print method attributes |
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410 st->print("%c%c%c%c%c ", compile_type, sync_char, exception_char, blocking_char, native_char); |
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411 |
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412 if (TieredCompilation) { |
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413 if (comp_level != -1) st->print("%d ", comp_level); |
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414 else st->print("- "); |
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415 } |
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416 st->print(" "); // more indent |
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417 |
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418 if (method == NULL) { |
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419 st->print("(method)"); |
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420 } else { |
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421 method->print_short_name(st); |
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422 if (is_osr_method) { |
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423 st->print(" @ %d", osr_bci); |
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424 } |
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425 if (method->is_native()) |
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426 st->print(" (native)"); |
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427 else |
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428 st->print(" (%d bytes)", method->code_size()); |
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429 } |
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430 |
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431 if (msg != NULL) { |
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432 st->print(" %s", msg); |
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433 } |
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434 if (!short_form) { |
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435 st->cr(); |
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436 } |
0 | 437 } |
438 | |
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439 // ------------------------------------------------------------------ |
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440 // CompileTask::print_inlining |
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441 void CompileTask::print_inlining(outputStream* st, ciMethod* method, int inline_level, int bci, const char* msg) { |
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442 // 1234567 |
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443 st->print(" "); // print timestamp |
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444 // 1234 |
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445 st->print(" "); // print compilation number |
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446 |
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447 // method attributes |
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448 if (method->is_loaded()) { |
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449 const char sync_char = method->is_synchronized() ? 's' : ' '; |
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450 const char exception_char = method->has_exception_handlers() ? '!' : ' '; |
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451 const char monitors_char = method->has_monitor_bytecodes() ? 'm' : ' '; |
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452 |
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453 // print method attributes |
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454 st->print(" %c%c%c ", sync_char, exception_char, monitors_char); |
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455 } else { |
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456 // %s!bn |
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457 st->print(" "); // print method attributes |
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458 } |
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459 |
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460 if (TieredCompilation) { |
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461 st->print(" "); |
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462 } |
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463 st->print(" "); // more indent |
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464 st->print(" "); // initial inlining indent |
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465 |
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466 for (int i = 0; i < inline_level; i++) st->print(" "); |
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467 |
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468 st->print("@ %d ", bci); // print bci |
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469 method->print_short_name(st); |
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470 if (method->is_loaded()) |
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471 st->print(" (%d bytes)", method->code_size()); |
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472 else |
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473 st->print(" (not loaded)"); |
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474 |
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475 if (msg != NULL) { |
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476 st->print(" %s", msg); |
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477 } |
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478 st->cr(); |
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479 } |
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480 |
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481 // ------------------------------------------------------------------ |
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482 // CompileTask::print_inline_indent |
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483 void CompileTask::print_inline_indent(int inline_level, outputStream* st) { |
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484 // 1234567 |
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485 st->print(" "); // print timestamp |
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486 // 1234 |
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487 st->print(" "); // print compilation number |
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488 // %s!bn |
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489 st->print(" "); // print method attributes |
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490 if (TieredCompilation) { |
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491 st->print(" "); |
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492 } |
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493 st->print(" "); // more indent |
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494 st->print(" "); // initial inlining indent |
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495 for (int i = 0; i < inline_level; i++) st->print(" "); |
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496 } |
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497 |
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498 // ------------------------------------------------------------------ |
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499 // CompileTask::print_compilation |
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500 void CompileTask::print_compilation(outputStream* st, const char* msg, bool short_form) { |
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501 bool is_osr_method = osr_bci() != InvocationEntryBci; |
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502 print_compilation_impl(st, method(), compile_id(), comp_level(), is_osr_method, osr_bci(), is_blocking(), msg, short_form); |
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503 } |
0 | 504 |
505 // ------------------------------------------------------------------ | |
506 // CompileTask::log_task | |
507 void CompileTask::log_task(xmlStream* log) { | |
508 Thread* thread = Thread::current(); | |
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509 methodHandle method(thread, this->method()); |
0 | 510 ResourceMark rm(thread); |
511 | |
512 // <task id='9' method='M' osr_bci='X' level='1' blocking='1' stamp='1.234'> | |
513 if (_compile_id != 0) log->print(" compile_id='%d'", _compile_id); | |
514 if (_osr_bci != CompileBroker::standard_entry_bci) { | |
515 log->print(" compile_kind='osr'"); // same as nmethod::compile_kind | |
516 } // else compile_kind='c2c' | |
517 if (!method.is_null()) log->method(method); | |
518 if (_osr_bci != CompileBroker::standard_entry_bci) { | |
519 log->print(" osr_bci='%d'", _osr_bci); | |
520 } | |
521 if (_comp_level != CompLevel_highest_tier) { | |
522 log->print(" level='%d'", _comp_level); | |
523 } | |
524 if (_is_blocking) { | |
525 log->print(" blocking='1'"); | |
526 } | |
527 log->stamp(); | |
528 } | |
529 | |
530 | |
531 // ------------------------------------------------------------------ | |
532 // CompileTask::log_task_queued | |
533 void CompileTask::log_task_queued() { | |
534 Thread* thread = Thread::current(); | |
535 ttyLocker ttyl; | |
536 ResourceMark rm(thread); | |
537 | |
538 xtty->begin_elem("task_queued"); | |
539 log_task(xtty); | |
540 if (_comment != NULL) { | |
541 xtty->print(" comment='%s'", _comment); | |
542 } | |
543 if (_hot_method != NULL) { | |
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544 methodHandle hot(thread, _hot_method); |
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545 methodHandle method(thread, _method); |
0 | 546 if (hot() != method()) { |
547 xtty->method(hot); | |
548 } | |
549 } | |
550 if (_hot_count != 0) { | |
551 xtty->print(" hot_count='%d'", _hot_count); | |
552 } | |
553 xtty->end_elem(); | |
554 } | |
555 | |
556 | |
557 // ------------------------------------------------------------------ | |
558 // CompileTask::log_task_start | |
559 void CompileTask::log_task_start(CompileLog* log) { | |
560 log->begin_head("task"); | |
561 log_task(log); | |
562 log->end_head(); | |
563 } | |
564 | |
565 | |
566 // ------------------------------------------------------------------ | |
567 // CompileTask::log_task_done | |
568 void CompileTask::log_task_done(CompileLog* log) { | |
569 Thread* thread = Thread::current(); | |
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570 methodHandle method(thread, this->method()); |
0 | 571 ResourceMark rm(thread); |
572 | |
573 // <task_done ... stamp='1.234'> </task> | |
574 nmethod* nm = code(); | |
575 log->begin_elem("task_done success='%d' nmsize='%d' count='%d'", | |
1748 | 576 _is_success, nm == NULL ? 0 : nm->content_size(), |
0 | 577 method->invocation_count()); |
578 int bec = method->backedge_count(); | |
579 if (bec != 0) log->print(" backedge_count='%d'", bec); | |
580 // Note: "_is_complete" is about to be set, but is not. | |
581 if (_num_inlined_bytecodes != 0) { | |
582 log->print(" inlined_bytes='%d'", _num_inlined_bytecodes); | |
583 } | |
584 log->stamp(); | |
585 log->end_elem(); | |
586 log->tail("task"); | |
587 log->clear_identities(); // next task will have different CI | |
588 if (log->unflushed_count() > 2000) { | |
589 log->flush(); | |
590 } | |
591 log->mark_file_end(); | |
592 } | |
593 | |
594 | |
595 | |
596 // ------------------------------------------------------------------ | |
597 // CompileQueue::add | |
598 // | |
599 // Add a CompileTask to a CompileQueue | |
600 void CompileQueue::add(CompileTask* task) { | |
601 assert(lock()->owned_by_self(), "must own lock"); | |
602 | |
603 task->set_next(NULL); | |
1783 | 604 task->set_prev(NULL); |
0 | 605 |
606 if (_last == NULL) { | |
607 // The compile queue is empty. | |
608 assert(_first == NULL, "queue is empty"); | |
609 _first = task; | |
610 _last = task; | |
611 } else { | |
612 // Append the task to the queue. | |
613 assert(_last->next() == NULL, "not last"); | |
614 _last->set_next(task); | |
1783 | 615 task->set_prev(_last); |
0 | 616 _last = task; |
617 } | |
1783 | 618 ++_size; |
0 | 619 |
620 // Mark the method as being in the compile queue. | |
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621 task->method()->set_queued_for_compilation(); |
0 | 622 |
623 if (CIPrintCompileQueue) { | |
624 print(); | |
625 } | |
626 | |
627 if (LogCompilation && xtty != NULL) { | |
628 task->log_task_queued(); | |
629 } | |
630 | |
631 // Notify CompilerThreads that a task is available. | |
1783 | 632 lock()->notify_all(); |
0 | 633 } |
634 | |
635 // ------------------------------------------------------------------ | |
636 // CompileQueue::get | |
637 // | |
638 // Get the next CompileTask from a CompileQueue | |
639 CompileTask* CompileQueue::get() { | |
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640 NMethodSweeper::possibly_sweep(); |
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641 |
0 | 642 MutexLocker locker(lock()); |
643 // Wait for an available CompileTask. | |
644 while (_first == NULL) { | |
645 // There is no work to be done right now. Wait. | |
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646 if (UseCodeCacheFlushing && (!CompileBroker::should_compile_new_jobs() || CodeCache::needs_flushing())) { |
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647 // During the emergency sweeping periods, wake up and sweep occasionally |
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648 bool timedout = lock()->wait(!Mutex::_no_safepoint_check_flag, NmethodSweepCheckInterval*1000); |
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649 if (timedout) { |
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650 MutexUnlocker ul(lock()); |
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651 // When otherwise not busy, run nmethod sweeping |
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652 NMethodSweeper::possibly_sweep(); |
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653 } |
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654 } else { |
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655 // During normal operation no need to wake up on timer |
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656 lock()->wait(); |
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657 } |
0 | 658 } |
1783 | 659 CompileTask* task = CompilationPolicy::policy()->select_task(this); |
660 remove(task); | |
661 return task; | |
662 } | |
0 | 663 |
1783 | 664 void CompileQueue::remove(CompileTask* task) |
665 { | |
666 assert(lock()->owned_by_self(), "must own lock"); | |
667 if (task->prev() != NULL) { | |
668 task->prev()->set_next(task->next()); | |
669 } else { | |
670 // max is the first element | |
671 assert(task == _first, "Sanity"); | |
672 _first = task->next(); | |
0 | 673 } |
674 | |
1783 | 675 if (task->next() != NULL) { |
676 task->next()->set_prev(task->prev()); | |
677 } else { | |
678 // max is the last element | |
679 assert(task == _last, "Sanity"); | |
680 _last = task->prev(); | |
681 } | |
682 --_size; | |
0 | 683 } |
684 | |
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685 // methods in the compile queue need to be marked as used on the stack |
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686 // so that they don't get reclaimed by Redefine Classes |
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687 void CompileQueue::mark_on_stack() { |
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688 CompileTask* task = _first; |
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689 while (task != NULL) { |
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690 task->mark_on_stack(); |
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691 task = task->next(); |
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692 } |
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693 } |
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694 |
0 | 695 // ------------------------------------------------------------------ |
696 // CompileQueue::print | |
697 void CompileQueue::print() { | |
698 tty->print_cr("Contents of %s", name()); | |
699 tty->print_cr("----------------------"); | |
700 CompileTask* task = _first; | |
701 while (task != NULL) { | |
702 task->print_line(); | |
703 task = task->next(); | |
704 } | |
705 tty->print_cr("----------------------"); | |
706 } | |
707 | |
708 CompilerCounters::CompilerCounters(const char* thread_name, int instance, TRAPS) { | |
709 | |
710 _current_method[0] = '\0'; | |
711 _compile_type = CompileBroker::no_compile; | |
712 | |
713 if (UsePerfData) { | |
714 ResourceMark rm; | |
715 | |
716 // create the thread instance name space string - don't create an | |
717 // instance subspace if instance is -1 - keeps the adapterThread | |
718 // counters from having a ".0" namespace. | |
719 const char* thread_i = (instance == -1) ? thread_name : | |
720 PerfDataManager::name_space(thread_name, instance); | |
721 | |
722 | |
723 char* name = PerfDataManager::counter_name(thread_i, "method"); | |
724 _perf_current_method = | |
725 PerfDataManager::create_string_variable(SUN_CI, name, | |
726 cmname_buffer_length, | |
727 _current_method, CHECK); | |
728 | |
729 name = PerfDataManager::counter_name(thread_i, "type"); | |
730 _perf_compile_type = PerfDataManager::create_variable(SUN_CI, name, | |
731 PerfData::U_None, | |
732 (jlong)_compile_type, | |
733 CHECK); | |
734 | |
735 name = PerfDataManager::counter_name(thread_i, "time"); | |
736 _perf_time = PerfDataManager::create_counter(SUN_CI, name, | |
737 PerfData::U_Ticks, CHECK); | |
738 | |
739 name = PerfDataManager::counter_name(thread_i, "compiles"); | |
740 _perf_compiles = PerfDataManager::create_counter(SUN_CI, name, | |
741 PerfData::U_Events, CHECK); | |
742 } | |
743 } | |
744 | |
745 // ------------------------------------------------------------------ | |
746 // CompileBroker::compilation_init | |
747 // | |
748 // Initialize the Compilation object | |
749 void CompileBroker::compilation_init() { | |
750 _last_method_compiled[0] = '\0'; | |
751 | |
1970 | 752 #ifndef SHARK |
0 | 753 // Set the interface to the current compiler(s). |
1783 | 754 int c1_count = CompilationPolicy::policy()->compiler_count(CompLevel_simple); |
755 int c2_count = CompilationPolicy::policy()->compiler_count(CompLevel_full_optimization); | |
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756 #if defined(GRAAL) |
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757 _compilers[0] = new GraalCompiler(); |
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758 c1_count = 0; |
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759 c2_count = 0; |
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760 #elif defined(COMPILER1) |
1783 | 761 if (c1_count > 0) { |
762 _compilers[0] = new Compiler(); | |
763 } | |
0 | 764 #endif // COMPILER1 |
765 | |
766 #ifdef COMPILER2 | |
1783 | 767 if (c2_count > 0) { |
768 _compilers[1] = new C2Compiler(); | |
769 } | |
0 | 770 #endif // COMPILER2 |
771 | |
1970 | 772 #else // SHARK |
773 int c1_count = 0; | |
774 int c2_count = 1; | |
775 | |
776 _compilers[1] = new SharkCompiler(); | |
777 #endif // SHARK | |
1692 | 778 |
0 | 779 // Initialize the CompileTask free list |
780 _task_free_list = NULL; | |
781 | |
782 // Start the CompilerThreads | |
1783 | 783 init_compiler_threads(c1_count, c2_count); |
0 | 784 // totalTime performance counter is always created as it is required |
785 // by the implementation of java.lang.management.CompilationMBean. | |
786 { | |
787 EXCEPTION_MARK; | |
788 _perf_total_compilation = | |
789 PerfDataManager::create_counter(JAVA_CI, "totalTime", | |
790 PerfData::U_Ticks, CHECK); | |
791 } | |
792 | |
793 | |
794 if (UsePerfData) { | |
795 | |
796 EXCEPTION_MARK; | |
797 | |
798 // create the jvmstat performance counters | |
799 _perf_osr_compilation = | |
800 PerfDataManager::create_counter(SUN_CI, "osrTime", | |
801 PerfData::U_Ticks, CHECK); | |
802 | |
803 _perf_standard_compilation = | |
804 PerfDataManager::create_counter(SUN_CI, "standardTime", | |
805 PerfData::U_Ticks, CHECK); | |
806 | |
807 _perf_total_bailout_count = | |
808 PerfDataManager::create_counter(SUN_CI, "totalBailouts", | |
809 PerfData::U_Events, CHECK); | |
810 | |
811 _perf_total_invalidated_count = | |
812 PerfDataManager::create_counter(SUN_CI, "totalInvalidates", | |
813 PerfData::U_Events, CHECK); | |
814 | |
815 _perf_total_compile_count = | |
816 PerfDataManager::create_counter(SUN_CI, "totalCompiles", | |
817 PerfData::U_Events, CHECK); | |
818 _perf_total_osr_compile_count = | |
819 PerfDataManager::create_counter(SUN_CI, "osrCompiles", | |
820 PerfData::U_Events, CHECK); | |
821 | |
822 _perf_total_standard_compile_count = | |
823 PerfDataManager::create_counter(SUN_CI, "standardCompiles", | |
824 PerfData::U_Events, CHECK); | |
825 | |
826 _perf_sum_osr_bytes_compiled = | |
827 PerfDataManager::create_counter(SUN_CI, "osrBytes", | |
828 PerfData::U_Bytes, CHECK); | |
829 | |
830 _perf_sum_standard_bytes_compiled = | |
831 PerfDataManager::create_counter(SUN_CI, "standardBytes", | |
832 PerfData::U_Bytes, CHECK); | |
833 | |
834 _perf_sum_nmethod_size = | |
835 PerfDataManager::create_counter(SUN_CI, "nmethodSize", | |
836 PerfData::U_Bytes, CHECK); | |
837 | |
838 _perf_sum_nmethod_code_size = | |
839 PerfDataManager::create_counter(SUN_CI, "nmethodCodeSize", | |
840 PerfData::U_Bytes, CHECK); | |
841 | |
842 _perf_last_method = | |
843 PerfDataManager::create_string_variable(SUN_CI, "lastMethod", | |
844 CompilerCounters::cmname_buffer_length, | |
845 "", CHECK); | |
846 | |
847 _perf_last_failed_method = | |
848 PerfDataManager::create_string_variable(SUN_CI, "lastFailedMethod", | |
849 CompilerCounters::cmname_buffer_length, | |
850 "", CHECK); | |
851 | |
852 _perf_last_invalidated_method = | |
853 PerfDataManager::create_string_variable(SUN_CI, "lastInvalidatedMethod", | |
854 CompilerCounters::cmname_buffer_length, | |
855 "", CHECK); | |
856 | |
857 _perf_last_compile_type = | |
858 PerfDataManager::create_variable(SUN_CI, "lastType", | |
859 PerfData::U_None, | |
860 (jlong)CompileBroker::no_compile, | |
861 CHECK); | |
862 | |
863 _perf_last_compile_size = | |
864 PerfDataManager::create_variable(SUN_CI, "lastSize", | |
865 PerfData::U_Bytes, | |
866 (jlong)CompileBroker::no_compile, | |
867 CHECK); | |
868 | |
869 | |
870 _perf_last_failed_type = | |
871 PerfDataManager::create_variable(SUN_CI, "lastFailedType", | |
872 PerfData::U_None, | |
873 (jlong)CompileBroker::no_compile, | |
874 CHECK); | |
875 | |
876 _perf_last_invalidated_type = | |
877 PerfDataManager::create_variable(SUN_CI, "lastInvalidatedType", | |
878 PerfData::U_None, | |
879 (jlong)CompileBroker::no_compile, | |
880 CHECK); | |
881 } | |
882 | |
883 _initialized = true; | |
884 } | |
885 | |
886 | |
887 | |
888 // ------------------------------------------------------------------ | |
889 // CompileBroker::make_compiler_thread | |
890 CompilerThread* CompileBroker::make_compiler_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, TRAPS) { | |
891 CompilerThread* compiler_thread = NULL; | |
892 | |
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893 Klass* k = |
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894 SystemDictionary::resolve_or_fail(vmSymbols::java_lang_Thread(), |
0 | 895 true, CHECK_0); |
896 instanceKlassHandle klass (THREAD, k); | |
897 instanceHandle thread_oop = klass->allocate_instance_handle(CHECK_0); | |
898 Handle string = java_lang_String::create_from_str(name, CHECK_0); | |
899 | |
900 // Initialize thread_oop to put it into the system threadGroup | |
901 Handle thread_group (THREAD, Universe::system_thread_group()); | |
902 JavaValue result(T_VOID); | |
903 JavaCalls::call_special(&result, thread_oop, | |
904 klass, | |
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905 vmSymbols::object_initializer_name(), |
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906 vmSymbols::threadgroup_string_void_signature(), |
0 | 907 thread_group, |
908 string, | |
909 CHECK_0); | |
910 | |
911 { | |
912 MutexLocker mu(Threads_lock, THREAD); | |
913 compiler_thread = new CompilerThread(queue, counters); | |
914 // At this point the new CompilerThread data-races with this startup | |
915 // thread (which I believe is the primoridal thread and NOT the VM | |
916 // thread). This means Java bytecodes being executed at startup can | |
917 // queue compile jobs which will run at whatever default priority the | |
918 // newly created CompilerThread runs at. | |
919 | |
920 | |
921 // At this point it may be possible that no osthread was created for the | |
922 // JavaThread due to lack of memory. We would have to throw an exception | |
923 // in that case. However, since this must work and we do not allow | |
924 // exceptions anyway, check and abort if this fails. | |
925 | |
926 if (compiler_thread == NULL || compiler_thread->osthread() == NULL){ | |
927 vm_exit_during_initialization("java.lang.OutOfMemoryError", | |
928 "unable to create new native thread"); | |
929 } | |
930 | |
931 java_lang_Thread::set_thread(thread_oop(), compiler_thread); | |
932 | |
933 // Note that this only sets the JavaThread _priority field, which by | |
934 // definition is limited to Java priorities and not OS priorities. | |
935 // The os-priority is set in the CompilerThread startup code itself | |
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936 |
0 | 937 java_lang_Thread::set_priority(thread_oop(), NearMaxPriority); |
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938 |
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939 // Note that we cannot call os::set_priority because it expects Java |
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940 // priorities and we are *explicitly* using OS priorities so that it's |
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941 // possible to set the compiler thread priority higher than any Java |
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942 // thread. |
0 | 943 |
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944 int native_prio = CompilerThreadPriority; |
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945 if (native_prio == -1) { |
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946 if (UseCriticalCompilerThreadPriority) { |
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947 native_prio = os::java_to_os_priority[CriticalPriority]; |
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948 } else { |
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949 native_prio = os::java_to_os_priority[NearMaxPriority]; |
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950 } |
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951 } |
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952 os::set_native_priority(compiler_thread, native_prio); |
0 | 953 |
954 java_lang_Thread::set_daemon(thread_oop()); | |
955 | |
956 compiler_thread->set_threadObj(thread_oop()); | |
957 Threads::add(compiler_thread); | |
958 Thread::start(compiler_thread); | |
959 } | |
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960 |
0 | 961 // Let go of Threads_lock before yielding |
962 os::yield(); // make sure that the compiler thread is started early (especially helpful on SOLARIS) | |
963 | |
964 return compiler_thread; | |
965 } | |
966 | |
967 | |
968 // ------------------------------------------------------------------ | |
969 // CompileBroker::init_compiler_threads | |
970 // | |
971 // Initialize the compilation queue | |
1783 | 972 void CompileBroker::init_compiler_threads(int c1_compiler_count, int c2_compiler_count) { |
0 | 973 EXCEPTION_MARK; |
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974 #if !defined(ZERO) && !defined(SHARK) && !defined(GRAAL) |
1783 | 975 assert(c2_compiler_count > 0 || c1_compiler_count > 0, "No compilers?"); |
2447 | 976 #endif // !ZERO && !SHARK |
1783 | 977 if (c2_compiler_count > 0) { |
978 _c2_method_queue = new CompileQueue("C2MethodQueue", MethodCompileQueue_lock); | |
979 } | |
980 if (c1_compiler_count > 0) { | |
981 _c1_method_queue = new CompileQueue("C1MethodQueue", MethodCompileQueue_lock); | |
982 } | |
0 | 983 |
1783 | 984 int compiler_count = c1_compiler_count + c2_compiler_count; |
985 | |
0 | 986 _method_threads = |
6197 | 987 new (ResourceObj::C_HEAP, mtCompiler) GrowableArray<CompilerThread*>(compiler_count, true); |
0 | 988 |
989 char name_buffer[256]; | |
1783 | 990 for (int i = 0; i < c2_compiler_count; i++) { |
0 | 991 // Create a name for our thread. |
1783 | 992 sprintf(name_buffer, "C2 CompilerThread%d", i); |
0 | 993 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK); |
1783 | 994 CompilerThread* new_thread = make_compiler_thread(name_buffer, _c2_method_queue, counters, CHECK); |
0 | 995 _method_threads->append(new_thread); |
996 } | |
1783 | 997 |
998 for (int i = c2_compiler_count; i < compiler_count; i++) { | |
999 // Create a name for our thread. | |
1000 sprintf(name_buffer, "C1 CompilerThread%d", i); | |
1001 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK); | |
1002 CompilerThread* new_thread = make_compiler_thread(name_buffer, _c1_method_queue, counters, CHECK); | |
1003 _method_threads->append(new_thread); | |
1004 } | |
1005 | |
0 | 1006 if (UsePerfData) { |
1007 PerfDataManager::create_constant(SUN_CI, "threads", PerfData::U_Bytes, | |
1008 compiler_count, CHECK); | |
1009 } | |
1010 } | |
1011 | |
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1012 |
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1013 // Set the methods on the stack as on_stack so that redefine classes doesn't |
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1014 // reclaim them |
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1015 void CompileBroker::mark_on_stack() { |
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1016 if (_c2_method_queue != NULL) { |
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1017 _c2_method_queue->mark_on_stack(); |
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1018 } |
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1019 if (_c1_method_queue != NULL) { |
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1020 _c1_method_queue->mark_on_stack(); |
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1021 } |
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1022 } |
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1023 |
0 | 1024 // ------------------------------------------------------------------ |
1025 // CompileBroker::is_idle | |
1026 bool CompileBroker::is_idle() { | |
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1027 #ifndef GRAAL |
1783 | 1028 if (_c2_method_queue != NULL && !_c2_method_queue->is_empty()) { |
1029 return false; | |
1030 } else if (_c1_method_queue != NULL && !_c1_method_queue->is_empty()) { | |
0 | 1031 return false; |
1032 } else { | |
1033 int num_threads = _method_threads->length(); | |
1034 for (int i=0; i<num_threads; i++) { | |
1035 if (_method_threads->at(i)->task() != NULL) { | |
1036 return false; | |
1037 } | |
1038 } | |
1039 } | |
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1040 #endif |
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1041 // No pending or active compilations. |
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1042 return true; |
0 | 1043 } |
1044 | |
1045 | |
1046 // ------------------------------------------------------------------ | |
1047 // CompileBroker::compile_method | |
1048 // | |
1049 // Request compilation of a method. | |
1050 void CompileBroker::compile_method_base(methodHandle method, | |
1051 int osr_bci, | |
1052 int comp_level, | |
1053 methodHandle hot_method, | |
1054 int hot_count, | |
1055 const char* comment, | |
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1056 Thread* thread) { |
0 | 1057 // do nothing if compiler thread(s) is not available |
1058 if (!_initialized ) { | |
1059 return; | |
1060 } | |
1061 | |
1062 guarantee(!method->is_abstract(), "cannot compile abstract methods"); | |
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1063 assert(method->method_holder()->oop_is_instance(), |
0 | 1064 "sanity check"); |
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1065 assert(!method->method_holder()->is_not_initialized(), |
0 | 1066 "method holder must be initialized"); |
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1067 assert(!method->is_method_handle_intrinsic(), "do not enqueue these guys"); |
0 | 1068 |
1069 if (CIPrintRequests) { | |
1070 tty->print("request: "); | |
1071 method->print_short_name(tty); | |
1072 if (osr_bci != InvocationEntryBci) { | |
1073 tty->print(" osr_bci: %d", osr_bci); | |
1074 } | |
1075 tty->print(" comment: %s count: %d", comment, hot_count); | |
1076 if (!hot_method.is_null()) { | |
1077 tty->print(" hot: "); | |
1078 if (hot_method() != method()) { | |
1079 hot_method->print_short_name(tty); | |
1080 } else { | |
1081 tty->print("yes"); | |
1082 } | |
1083 } | |
1084 tty->cr(); | |
1085 } | |
1086 | |
1087 // A request has been made for compilation. Before we do any | |
1088 // real work, check to see if the method has been compiled | |
1089 // in the meantime with a definitive result. | |
1090 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
1091 return; | |
1092 } | |
1093 | |
2403 | 1094 #ifndef PRODUCT |
1095 if (osr_bci != -1 && !FLAG_IS_DEFAULT(OSROnlyBCI)) { | |
1096 if ((OSROnlyBCI > 0) ? (OSROnlyBCI != osr_bci) : (-OSROnlyBCI == osr_bci)) { | |
1097 // Positive OSROnlyBCI means only compile that bci. Negative means don't compile that BCI. | |
1098 return; | |
1099 } | |
1100 } | |
1101 #endif | |
1783 | 1102 |
0 | 1103 // If this method is already in the compile queue, then |
1104 // we do not block the current thread. | |
1105 if (compilation_is_in_queue(method, osr_bci)) { | |
1106 // We may want to decay our counter a bit here to prevent | |
1107 // multiple denied requests for compilation. This is an | |
1108 // open compilation policy issue. Note: The other possibility, | |
1109 // in the case that this is a blocking compile request, is to have | |
1110 // all subsequent blocking requesters wait for completion of | |
1111 // ongoing compiles. Note that in this case we'll need a protocol | |
1112 // for freeing the associated compile tasks. [Or we could have | |
1113 // a single static monitor on which all these waiters sleep.] | |
1114 return; | |
1115 } | |
1116 | |
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1117 // If the requesting thread is holding the pending list lock |
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1118 // then we just return. We can't risk blocking while holding |
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1119 // the pending list lock or a 3-way deadlock may occur |
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1120 // between the reference handler thread, a GC (instigated |
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1121 // by a compiler thread), and compiled method registration. |
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1122 if (InstanceRefKlass::owns_pending_list_lock(JavaThread::current())) { |
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1123 return; |
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1124 } |
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1125 #ifdef GRAAL |
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1126 if (!JavaThread::current()->is_compiling()) { |
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1127 method->set_queued_for_compilation(); |
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1128 GraalCompiler::instance()->compile_method(method, osr_bci, is_compile_blocking(method, osr_bci)); |
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1129 } else { |
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1130 // Recursive compile request => ignore. |
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1131 } |
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1132 #else |
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1133 |
0 | 1134 // Outputs from the following MutexLocker block: |
1135 CompileTask* task = NULL; | |
1136 bool blocking = false; | |
1783 | 1137 CompileQueue* queue = compile_queue(comp_level); |
0 | 1138 |
1139 // Acquire our lock. | |
1140 { | |
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1141 MutexLocker locker(queue->lock(), thread); |
0 | 1142 |
1143 // Make sure the method has not slipped into the queues since | |
1144 // last we checked; note that those checks were "fast bail-outs". | |
1145 // Here we need to be more careful, see 14012000 below. | |
1146 if (compilation_is_in_queue(method, osr_bci)) { | |
1147 return; | |
1148 } | |
1149 | |
1150 // We need to check again to see if the compilation has | |
1151 // completed. A previous compilation may have registered | |
1152 // some result. | |
1153 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
1154 return; | |
1155 } | |
1156 | |
1157 // We now know that this compilation is not pending, complete, | |
1158 // or prohibited. Assign a compile_id to this compilation | |
1159 // and check to see if it is in our [Start..Stop) range. | |
1160 uint compile_id = assign_compile_id(method, osr_bci); | |
1161 if (compile_id == 0) { | |
1162 // The compilation falls outside the allowed range. | |
1163 return; | |
1164 } | |
1165 | |
1166 // Should this thread wait for completion of the compile? | |
1167 blocking = is_compile_blocking(method, osr_bci); | |
1168 | |
1169 // We will enter the compilation in the queue. | |
1170 // 14012000: Note that this sets the queued_for_compile bits in | |
1171 // the target method. We can now reason that a method cannot be | |
1172 // queued for compilation more than once, as follows: | |
1173 // Before a thread queues a task for compilation, it first acquires | |
1174 // the compile queue lock, then checks if the method's queued bits | |
1175 // are set or it has already been compiled. Thus there can not be two | |
1176 // instances of a compilation task for the same method on the | |
1177 // compilation queue. Consider now the case where the compilation | |
1178 // thread has already removed a task for that method from the queue | |
1179 // and is in the midst of compiling it. In this case, the | |
1180 // queued_for_compile bits must be set in the method (and these | |
1181 // will be visible to the current thread, since the bits were set | |
1182 // under protection of the compile queue lock, which we hold now. | |
1183 // When the compilation completes, the compiler thread first sets | |
1184 // the compilation result and then clears the queued_for_compile | |
1185 // bits. Neither of these actions are protected by a barrier (or done | |
1186 // under the protection of a lock), so the only guarantee we have | |
1187 // (on machines with TSO (Total Store Order)) is that these values | |
1188 // will update in that order. As a result, the only combinations of | |
1189 // these bits that the current thread will see are, in temporal order: | |
1190 // <RESULT, QUEUE> : | |
1191 // <0, 1> : in compile queue, but not yet compiled | |
1192 // <1, 1> : compiled but queue bit not cleared | |
1193 // <1, 0> : compiled and queue bit cleared | |
1194 // Because we first check the queue bits then check the result bits, | |
1195 // we are assured that we cannot introduce a duplicate task. | |
1196 // Note that if we did the tests in the reverse order (i.e. check | |
1197 // result then check queued bit), we could get the result bit before | |
1198 // the compilation completed, and the queue bit after the compilation | |
1199 // completed, and end up introducing a "duplicate" (redundant) task. | |
1200 // In that case, the compiler thread should first check if a method | |
1201 // has already been compiled before trying to compile it. | |
1202 // NOTE: in the event that there are multiple compiler threads and | |
1203 // there is de-optimization/recompilation, things will get hairy, | |
1204 // and in that case it's best to protect both the testing (here) of | |
1205 // these bits, and their updating (here and elsewhere) under a | |
1206 // common lock. | |
1783 | 1207 task = create_compile_task(queue, |
0 | 1208 compile_id, method, |
1209 osr_bci, comp_level, | |
1210 hot_method, hot_count, comment, | |
1211 blocking); | |
1212 } | |
1213 | |
1214 if (blocking) { | |
1215 wait_for_completion(task); | |
1216 } | |
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1217 #endif |
0 | 1218 } |
1219 | |
1220 | |
1221 nmethod* CompileBroker::compile_method(methodHandle method, int osr_bci, | |
1783 | 1222 int comp_level, |
0 | 1223 methodHandle hot_method, int hot_count, |
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1224 const char* comment, Thread* THREAD) { |
0 | 1225 // make sure arguments make sense |
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1226 assert(method->method_holder()->oop_is_instance(), "not an instance method"); |
0 | 1227 assert(osr_bci == InvocationEntryBci || (0 <= osr_bci && osr_bci < method->code_size()), "bci out of range"); |
1228 assert(!method->is_abstract() && (osr_bci == InvocationEntryBci || !method->is_native()), "cannot compile abstract/native methods"); | |
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1229 assert(!method->method_holder()->is_not_initialized(), "method holder must be initialized"); |
0 | 1230 |
1783 | 1231 if (!TieredCompilation) { |
1232 comp_level = CompLevel_highest_tier; | |
0 | 1233 } |
1234 | |
1235 // return quickly if possible | |
1236 | |
1237 // lock, make sure that the compilation | |
1238 // isn't prohibited in a straightforward way. | |
1239 | |
1240 if (compiler(comp_level) == NULL || compilation_is_prohibited(method, osr_bci, comp_level)) { | |
1241 return NULL; | |
1242 } | |
1243 | |
1244 if (osr_bci == InvocationEntryBci) { | |
1245 // standard compilation | |
1246 nmethod* method_code = method->code(); | |
1783 | 1247 if (method_code != NULL) { |
1248 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
1249 return method_code; | |
1250 } | |
0 | 1251 } |
1252 if (method->is_not_compilable(comp_level)) return NULL; | |
1202 | 1253 |
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1254 if (UseCodeCacheFlushing) { |
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1255 nmethod* saved = CodeCache::find_and_remove_saved_code(method()); |
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1256 if (saved != NULL) { |
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1257 method->set_code(method, saved); |
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1258 return saved; |
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1259 } |
1202 | 1260 } |
1261 | |
0 | 1262 } else { |
1263 // osr compilation | |
1264 #ifndef TIERED | |
1265 // seems like an assert of dubious value | |
1783 | 1266 assert(comp_level == CompLevel_highest_tier, |
0 | 1267 "all OSR compiles are assumed to be at a single compilation lavel"); |
1268 #endif // TIERED | |
1783 | 1269 // We accept a higher level osr method |
1270 nmethod* nm = method->lookup_osr_nmethod_for(osr_bci, comp_level, false); | |
0 | 1271 if (nm != NULL) return nm; |
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1272 if (method->is_not_osr_compilable(comp_level)) return NULL; |
0 | 1273 } |
1274 | |
1275 assert(!HAS_PENDING_EXCEPTION, "No exception should be present"); | |
1276 // some prerequisites that are compiler specific | |
2447 | 1277 if (compiler(comp_level)->is_c2() || compiler(comp_level)->is_shark()) { |
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1278 method->constants()->resolve_string_constants(CHECK_AND_CLEAR_NULL); |
0 | 1279 // Resolve all classes seen in the signature of the method |
1280 // we are compiling. | |
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1281 Method::load_signature_classes(method, CHECK_AND_CLEAR_NULL); |
0 | 1282 } |
1283 | |
1284 // If the method is native, do the lookup in the thread requesting | |
1285 // the compilation. Native lookups can load code, which is not | |
1286 // permitted during compilation. | |
1287 // | |
1288 // Note: A native method implies non-osr compilation which is | |
1289 // checked with an assertion at the entry of this method. | |
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1290 if (method->is_native() && !method->is_method_handle_intrinsic()) { |
0 | 1291 bool in_base_library; |
1292 address adr = NativeLookup::lookup(method, in_base_library, THREAD); | |
1293 if (HAS_PENDING_EXCEPTION) { | |
1294 // In case of an exception looking up the method, we just forget | |
1295 // about it. The interpreter will kick-in and throw the exception. | |
1296 method->set_not_compilable(); // implies is_not_osr_compilable() | |
1297 CLEAR_PENDING_EXCEPTION; | |
1298 return NULL; | |
1299 } | |
1300 assert(method->has_native_function(), "must have native code by now"); | |
1301 } | |
1302 | |
1303 // RedefineClasses() has replaced this method; just return | |
1304 if (method->is_old()) { | |
1305 return NULL; | |
1306 } | |
1307 | |
1308 // JVMTI -- post_compile_event requires jmethod_id() that may require | |
1309 // a lock the compiling thread can not acquire. Prefetch it here. | |
1310 if (JvmtiExport::should_post_compiled_method_load()) { | |
1311 method->jmethod_id(); | |
1312 } | |
1313 | |
1202 | 1314 // If the compiler is shut off due to code cache flushing or otherwise, |
1315 // fail out now so blocking compiles dont hang the java thread | |
1316 if (!should_compile_new_jobs() || (UseCodeCacheFlushing && CodeCache::needs_flushing())) { | |
1783 | 1317 CompilationPolicy::policy()->delay_compilation(method()); |
1202 | 1318 return NULL; |
1319 } | |
1320 | |
0 | 1321 // do the compilation |
1322 if (method->is_native()) { | |
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1323 if (!PreferInterpreterNativeStubs || method->is_method_handle_intrinsic()) { |
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1324 // Acquire our lock. |
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1325 int compile_id; |
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1326 { |
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1327 MutexLocker locker(MethodCompileQueue_lock, THREAD); |
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1328 compile_id = assign_compile_id(method, standard_entry_bci); |
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1329 } |
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1330 (void) AdapterHandlerLibrary::create_native_wrapper(method, compile_id); |
0 | 1331 } else { |
1332 return NULL; | |
1333 } | |
1334 } else { | |
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1335 compile_method_base(method, osr_bci, comp_level, hot_method, hot_count, comment, THREAD); |
0 | 1336 } |
1337 | |
1338 // return requested nmethod | |
1783 | 1339 // We accept a higher level osr method |
1340 return osr_bci == InvocationEntryBci ? method->code() : method->lookup_osr_nmethod_for(osr_bci, comp_level, false); | |
0 | 1341 } |
1342 | |
1343 | |
1344 // ------------------------------------------------------------------ | |
1345 // CompileBroker::compilation_is_complete | |
1346 // | |
1347 // See if compilation of this method is already complete. | |
1348 bool CompileBroker::compilation_is_complete(methodHandle method, | |
1349 int osr_bci, | |
1350 int comp_level) { | |
1351 bool is_osr = (osr_bci != standard_entry_bci); | |
1352 if (is_osr) { | |
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1353 if (method->is_not_osr_compilable(comp_level)) { |
0 | 1354 return true; |
1355 } else { | |
1783 | 1356 nmethod* result = method->lookup_osr_nmethod_for(osr_bci, comp_level, true); |
0 | 1357 return (result != NULL); |
1358 } | |
1359 } else { | |
1360 if (method->is_not_compilable(comp_level)) { | |
1361 return true; | |
1362 } else { | |
1363 nmethod* result = method->code(); | |
1364 if (result == NULL) return false; | |
1783 | 1365 return comp_level == result->comp_level(); |
0 | 1366 } |
1367 } | |
1368 } | |
1369 | |
1370 | |
1371 // ------------------------------------------------------------------ | |
1372 // CompileBroker::compilation_is_in_queue | |
1373 // | |
1374 // See if this compilation is already requested. | |
1375 // | |
1376 // Implementation note: there is only a single "is in queue" bit | |
1377 // for each method. This means that the check below is overly | |
1378 // conservative in the sense that an osr compilation in the queue | |
1379 // will block a normal compilation from entering the queue (and vice | |
1380 // versa). This can be remedied by a full queue search to disambiguate | |
1381 // cases. If it is deemed profitible, this may be done. | |
1382 bool CompileBroker::compilation_is_in_queue(methodHandle method, | |
1783 | 1383 int osr_bci) { |
0 | 1384 return method->queued_for_compilation(); |
1385 } | |
1386 | |
1387 // ------------------------------------------------------------------ | |
1388 // CompileBroker::compilation_is_prohibited | |
1389 // | |
1390 // See if this compilation is not allowed. | |
1391 bool CompileBroker::compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level) { | |
1392 bool is_native = method->is_native(); | |
1393 // Some compilers may not support the compilation of natives. | |
1394 if (is_native && | |
1395 (!CICompileNatives || !compiler(comp_level)->supports_native())) { | |
1783 | 1396 method->set_not_compilable_quietly(comp_level); |
0 | 1397 return true; |
1398 } | |
1399 | |
1400 bool is_osr = (osr_bci != standard_entry_bci); | |
1401 // Some compilers may not support on stack replacement. | |
1402 if (is_osr && | |
1403 (!CICompileOSR || !compiler(comp_level)->supports_osr())) { | |
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1404 method->set_not_osr_compilable(comp_level); |
0 | 1405 return true; |
1406 } | |
1407 | |
1408 // The method may be explicitly excluded by the user. | |
1409 bool quietly; | |
1410 if (CompilerOracle::should_exclude(method, quietly)) { | |
1411 if (!quietly) { | |
1412 // This does not happen quietly... | |
1413 ResourceMark rm; | |
1414 tty->print("### Excluding %s:%s", | |
1415 method->is_native() ? "generation of native wrapper" : "compile", | |
1416 (method->is_static() ? " static" : "")); | |
1417 method->print_short_name(tty); | |
1418 tty->cr(); | |
1419 } | |
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1420 method->set_not_compilable_quietly(); |
0 | 1421 } |
1422 | |
1423 return false; | |
1424 } | |
1425 | |
1426 | |
1427 // ------------------------------------------------------------------ | |
1428 // CompileBroker::assign_compile_id | |
1429 // | |
1430 // Assign a serialized id number to this compilation request. If the | |
1431 // number falls out of the allowed range, return a 0. OSR | |
1432 // compilations may be numbered separately from regular compilations | |
1433 // if certain debugging flags are used. | |
1434 uint CompileBroker::assign_compile_id(methodHandle method, int osr_bci) { | |
1783 | 1435 assert(MethodCompileQueue_lock->owner() == Thread::current(), |
0 | 1436 "must hold the compilation queue lock"); |
1437 bool is_osr = (osr_bci != standard_entry_bci); | |
1438 uint id; | |
1439 if (CICountOSR && is_osr) { | |
1440 id = ++_osr_compilation_id; | |
1441 if ((uint)CIStartOSR <= id && id < (uint)CIStopOSR) { | |
1442 return id; | |
1443 } | |
1444 } else { | |
1445 id = ++_compilation_id; | |
1446 if ((uint)CIStart <= id && id < (uint)CIStop) { | |
1447 return id; | |
1448 } | |
1449 } | |
1450 | |
1451 // Method was not in the appropriate compilation range. | |
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1452 method->set_not_compilable_quietly(); |
0 | 1453 return 0; |
1454 } | |
1455 | |
1456 | |
1457 // ------------------------------------------------------------------ | |
1458 // CompileBroker::is_compile_blocking | |
1459 // | |
1460 // Should the current thread be blocked until this compilation request | |
1461 // has been fulfilled? | |
1462 bool CompileBroker::is_compile_blocking(methodHandle method, int osr_bci) { | |
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1463 assert(!InstanceRefKlass::owns_pending_list_lock(JavaThread::current()), "possible deadlock"); |
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1464 return !BackgroundCompilation; |
0 | 1465 } |
1466 | |
1467 | |
1468 // ------------------------------------------------------------------ | |
1469 // CompileBroker::preload_classes | |
1470 void CompileBroker::preload_classes(methodHandle method, TRAPS) { | |
1471 // Move this code over from c1_Compiler.cpp | |
1472 ShouldNotReachHere(); | |
1473 } | |
1474 | |
1475 | |
1476 // ------------------------------------------------------------------ | |
1477 // CompileBroker::create_compile_task | |
1478 // | |
1479 // Create a CompileTask object representing the current request for | |
1480 // compilation. Add this task to the queue. | |
1481 CompileTask* CompileBroker::create_compile_task(CompileQueue* queue, | |
1482 int compile_id, | |
1483 methodHandle method, | |
1484 int osr_bci, | |
1485 int comp_level, | |
1486 methodHandle hot_method, | |
1487 int hot_count, | |
1488 const char* comment, | |
1489 bool blocking) { | |
1490 CompileTask* new_task = allocate_task(); | |
1491 new_task->initialize(compile_id, method, osr_bci, comp_level, | |
1492 hot_method, hot_count, comment, | |
1493 blocking); | |
1494 queue->add(new_task); | |
1495 return new_task; | |
1496 } | |
1497 | |
1498 | |
1499 // ------------------------------------------------------------------ | |
1500 // CompileBroker::allocate_task | |
1501 // | |
1502 // Allocate a CompileTask, from the free list if possible. | |
1503 CompileTask* CompileBroker::allocate_task() { | |
1504 MutexLocker locker(CompileTaskAlloc_lock); | |
1505 CompileTask* task = NULL; | |
1506 if (_task_free_list != NULL) { | |
1507 task = _task_free_list; | |
1508 _task_free_list = task->next(); | |
1509 task->set_next(NULL); | |
1510 } else { | |
1511 task = new CompileTask(); | |
1512 task->set_next(NULL); | |
1513 } | |
1514 return task; | |
1515 } | |
1516 | |
1517 | |
1518 // ------------------------------------------------------------------ | |
1519 // CompileBroker::free_task | |
1520 // | |
1521 // Add a task to the free list. | |
1522 void CompileBroker::free_task(CompileTask* task) { | |
1523 MutexLocker locker(CompileTaskAlloc_lock); | |
1524 task->free(); | |
1525 task->set_next(_task_free_list); | |
1526 _task_free_list = task; | |
1527 } | |
1528 | |
1529 | |
1530 // ------------------------------------------------------------------ | |
1531 // CompileBroker::wait_for_completion | |
1532 // | |
1533 // Wait for the given method CompileTask to complete. | |
1534 void CompileBroker::wait_for_completion(CompileTask* task) { | |
1535 if (CIPrintCompileQueue) { | |
1536 tty->print_cr("BLOCKING FOR COMPILE"); | |
1537 } | |
1538 | |
1539 assert(task->is_blocking(), "can only wait on blocking task"); | |
1540 | |
1541 JavaThread *thread = JavaThread::current(); | |
1542 thread->set_blocked_on_compilation(true); | |
1543 | |
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1544 methodHandle method(thread, task->method()); |
0 | 1545 { |
1546 MutexLocker waiter(task->lock(), thread); | |
1547 | |
1548 while (!task->is_complete()) | |
1549 task->lock()->wait(); | |
1550 } | |
1551 // It is harmless to check this status without the lock, because | |
1552 // completion is a stable property (until the task object is recycled). | |
1553 assert(task->is_complete(), "Compilation should have completed"); | |
1554 assert(task->code_handle() == NULL, "must be reset"); | |
1555 | |
1556 thread->set_blocked_on_compilation(false); | |
1557 | |
1558 // By convention, the waiter is responsible for recycling a | |
1559 // blocking CompileTask. Since there is only one waiter ever | |
1560 // waiting on a CompileTask, we know that no one else will | |
1561 // be using this CompileTask; we can free it. | |
1562 free_task(task); | |
1563 } | |
1564 | |
1565 // ------------------------------------------------------------------ | |
1566 // CompileBroker::compiler_thread_loop | |
1567 // | |
1568 // The main loop run by a CompilerThread. | |
1569 void CompileBroker::compiler_thread_loop() { | |
1570 CompilerThread* thread = CompilerThread::current(); | |
1571 CompileQueue* queue = thread->queue(); | |
1572 | |
1573 // For the thread that initializes the ciObjectFactory | |
1574 // this resource mark holds all the shared objects | |
1575 ResourceMark rm; | |
1576 | |
1577 // First thread to get here will initialize the compiler interface | |
1578 | |
1579 if (!ciObjectFactory::is_initialized()) { | |
1580 ASSERT_IN_VM; | |
1581 MutexLocker only_one (CompileThread_lock, thread); | |
1582 if (!ciObjectFactory::is_initialized()) { | |
1583 ciObjectFactory::initialize(); | |
1584 } | |
1585 } | |
1586 | |
1587 // Open a log. | |
1588 if (LogCompilation) { | |
1589 init_compiler_thread_log(); | |
1590 } | |
1591 CompileLog* log = thread->log(); | |
1592 if (log != NULL) { | |
6843 | 1593 log->begin_elem("start_compile_thread name='%s' thread='" UINTX_FORMAT "' process='%d'", |
1594 thread->name(), | |
0 | 1595 os::current_thread_id(), |
1596 os::current_process_id()); | |
1597 log->stamp(); | |
1598 log->end_elem(); | |
1599 } | |
1600 | |
1601 while (true) { | |
1602 { | |
1603 // We need this HandleMark to avoid leaking VM handles. | |
1604 HandleMark hm(thread); | |
1202 | 1605 |
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1606 if (CodeCache::largest_free_block() < CodeCacheMinimumFreeSpace) { |
1202 | 1607 // the code cache is really full |
1608 handle_full_code_cache(); | |
1609 } else if (UseCodeCacheFlushing && CodeCache::needs_flushing()) { | |
1610 // Attempt to start cleaning the code cache while there is still a little headroom | |
1611 NMethodSweeper::handle_full_code_cache(false); | |
0 | 1612 } |
1613 | |
1614 CompileTask* task = queue->get(); | |
1615 | |
1616 // Give compiler threads an extra quanta. They tend to be bursty and | |
1617 // this helps the compiler to finish up the job. | |
1618 if( CompilerThreadHintNoPreempt ) | |
1619 os::hint_no_preempt(); | |
1620 | |
1621 // trace per thread time and compile statistics | |
1622 CompilerCounters* counters = ((CompilerThread*)thread)->counters(); | |
1623 PerfTraceTimedEvent(counters->time_counter(), counters->compile_counter()); | |
1624 | |
1625 // Assign the task to the current thread. Mark this compilation | |
1626 // thread as active for the profiler. | |
1627 CompileTaskWrapper ctw(task); | |
1628 nmethodLocker result_handle; // (handle for the nmethod produced by this task) | |
1629 task->set_code_handle(&result_handle); | |
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1630 methodHandle method(thread, task->method()); |
0 | 1631 |
1632 // Never compile a method if breakpoints are present in it | |
1633 if (method()->number_of_breakpoints() == 0) { | |
1634 // Compile the method. | |
1202 | 1635 if ((UseCompiler || AlwaysCompileLoopMethods) && CompileBroker::should_compile_new_jobs()) { |
0 | 1636 #ifdef COMPILER1 |
1637 // Allow repeating compilations for the purpose of benchmarking | |
1638 // compile speed. This is not useful for customers. | |
1639 if (CompilationRepeat != 0) { | |
1640 int compile_count = CompilationRepeat; | |
1641 while (compile_count > 0) { | |
1642 invoke_compiler_on_method(task); | |
1643 nmethod* nm = method->code(); | |
1644 if (nm != NULL) { | |
1645 nm->make_zombie(); | |
1646 method->clear_code(); | |
1647 } | |
1648 compile_count--; | |
1649 } | |
1650 } | |
1651 #endif /* COMPILER1 */ | |
1652 invoke_compiler_on_method(task); | |
1653 } else { | |
1654 // After compilation is disabled, remove remaining methods from queue | |
1655 method->clear_queued_for_compilation(); | |
1656 } | |
1657 } | |
1658 } | |
1659 } | |
1660 } | |
1661 | |
1662 | |
1663 // ------------------------------------------------------------------ | |
1664 // CompileBroker::init_compiler_thread_log | |
1665 // | |
1666 // Set up state required by +LogCompilation. | |
1667 void CompileBroker::init_compiler_thread_log() { | |
1668 CompilerThread* thread = CompilerThread::current(); | |
1669 char fileBuf[4*K]; | |
1670 FILE* fp = NULL; | |
1671 char* file = NULL; | |
1672 intx thread_id = os::current_thread_id(); | |
1673 for (int try_temp_dir = 1; try_temp_dir >= 0; try_temp_dir--) { | |
1674 const char* dir = (try_temp_dir ? os::get_temp_directory() : NULL); | |
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1675 if (dir == NULL) { |
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1676 jio_snprintf(fileBuf, sizeof(fileBuf), "hs_c" UINTX_FORMAT "_pid%u.log", |
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1677 thread_id, os::current_process_id()); |
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1678 } else { |
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1679 jio_snprintf(fileBuf, sizeof(fileBuf), |
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1680 "%s%shs_c" UINTX_FORMAT "_pid%u.log", dir, |
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1681 os::file_separator(), thread_id, os::current_process_id()); |
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1682 } |
0 | 1683 fp = fopen(fileBuf, "at"); |
1684 if (fp != NULL) { | |
6197 | 1685 file = NEW_C_HEAP_ARRAY(char, strlen(fileBuf)+1, mtCompiler); |
0 | 1686 strcpy(file, fileBuf); |
1687 break; | |
1688 } | |
1689 } | |
1690 if (fp == NULL) { | |
1691 warning("Cannot open log file: %s", fileBuf); | |
1692 } else { | |
1693 if (LogCompilation && Verbose) | |
1694 tty->print_cr("Opening compilation log %s", file); | |
6197 | 1695 CompileLog* log = new(ResourceObj::C_HEAP, mtCompiler) CompileLog(file, fp, thread_id); |
0 | 1696 thread->init_log(log); |
1697 | |
1698 if (xtty != NULL) { | |
1699 ttyLocker ttyl; | |
1700 | |
1701 // Record any per thread log files | |
1702 xtty->elem("thread_logfile thread='%d' filename='%s'", thread_id, file); | |
1703 } | |
1704 } | |
1705 } | |
1706 | |
1707 // ------------------------------------------------------------------ | |
1708 // CompileBroker::set_should_block | |
1709 // | |
1710 // Set _should_block. | |
1711 // Call this from the VM, with Threads_lock held and a safepoint requested. | |
1712 void CompileBroker::set_should_block() { | |
1713 assert(Threads_lock->owner() == Thread::current(), "must have threads lock"); | |
1714 assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint already"); | |
1715 #ifndef PRODUCT | |
1716 if (PrintCompilation && (Verbose || WizardMode)) | |
1717 tty->print_cr("notifying compiler thread pool to block"); | |
1718 #endif | |
1719 _should_block = true; | |
1720 } | |
1721 | |
1722 // ------------------------------------------------------------------ | |
1723 // CompileBroker::maybe_block | |
1724 // | |
1725 // Call this from the compiler at convenient points, to poll for _should_block. | |
1726 void CompileBroker::maybe_block() { | |
1727 if (_should_block) { | |
1728 #ifndef PRODUCT | |
1729 if (PrintCompilation && (Verbose || WizardMode)) | |
1730 tty->print_cr("compiler thread " INTPTR_FORMAT " poll detects block request", Thread::current()); | |
1731 #endif | |
1732 ThreadInVMfromNative tivfn(JavaThread::current()); | |
1733 } | |
1734 } | |
1735 | |
1736 // ------------------------------------------------------------------ | |
1737 // CompileBroker::invoke_compiler_on_method | |
1738 // | |
1739 // Compile a method. | |
1740 // | |
1741 void CompileBroker::invoke_compiler_on_method(CompileTask* task) { | |
1742 if (PrintCompilation) { | |
1743 ResourceMark rm; | |
1744 task->print_line(); | |
1745 } | |
1746 elapsedTimer time; | |
1747 | |
1748 CompilerThread* thread = CompilerThread::current(); | |
1749 ResourceMark rm(thread); | |
1750 | |
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1751 if (LogEvents) { |
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1752 _compilation_log->log_compile(thread, task); |
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1753 } |
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1754 |
0 | 1755 // Common flags. |
1756 uint compile_id = task->compile_id(); | |
1757 int osr_bci = task->osr_bci(); | |
1758 bool is_osr = (osr_bci != standard_entry_bci); | |
1759 bool should_log = (thread->log() != NULL); | |
1760 bool should_break = false; | |
1761 { | |
1762 // create the handle inside it's own block so it can't | |
1763 // accidentally be referenced once the thread transitions to | |
1764 // native. The NoHandleMark before the transition should catch | |
1765 // any cases where this occurs in the future. | |
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1766 methodHandle method(thread, task->method()); |
0 | 1767 should_break = check_break_at(method, compile_id, is_osr); |
1768 if (should_log && !CompilerOracle::should_log(method)) { | |
1769 should_log = false; | |
1770 } | |
1771 assert(!method->is_native(), "no longer compile natives"); | |
1772 | |
1773 // Save information about this method in case of failure. | |
1774 set_last_compile(thread, method, is_osr, task->comp_level()); | |
1775 | |
1776 DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler(task->comp_level()), method); | |
1777 } | |
1778 | |
1779 // Allocate a new set of JNI handles. | |
1780 push_jni_handle_block(); | |
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1781 Method* target_handle = task->method(); |
0 | 1782 int compilable = ciEnv::MethodCompilable; |
1783 { | |
1784 int system_dictionary_modification_counter; | |
1785 { | |
1786 MutexLocker locker(Compile_lock, thread); | |
1787 system_dictionary_modification_counter = SystemDictionary::number_of_modifications(); | |
1788 } | |
1789 | |
1790 NoHandleMark nhm; | |
1791 ThreadToNativeFromVM ttn(thread); | |
1792 | |
1793 ciEnv ci_env(task, system_dictionary_modification_counter); | |
1794 if (should_break) { | |
1795 ci_env.set_break_at_compile(true); | |
1796 } | |
1797 if (should_log) { | |
1798 ci_env.set_log(thread->log()); | |
1799 } | |
1800 assert(thread->env() == &ci_env, "set by ci_env"); | |
1801 // The thread-env() field is cleared in ~CompileTaskWrapper. | |
1802 | |
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1803 // Cache Jvmti state |
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1804 ci_env.cache_jvmti_state(); |
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1805 |
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1806 // Cache DTrace flags |
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1807 ci_env.cache_dtrace_flags(); |
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1808 |
0 | 1809 ciMethod* target = ci_env.get_method_from_handle(target_handle); |
1810 | |
1811 TraceTime t1("compilation", &time); | |
1812 | |
1813 compiler(task->comp_level())->compile_method(&ci_env, target, osr_bci); | |
1814 | |
1815 if (!ci_env.failing() && task->code() == NULL) { | |
1816 //assert(false, "compiler should always document failure"); | |
1817 // The compiler elected, without comment, not to register a result. | |
1818 // Do not attempt further compilations of this method. | |
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1819 ci_env.record_method_not_compilable("compile failed", !TieredCompilation); |
0 | 1820 } |
1821 | |
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1822 // Copy this bit to the enclosing block: |
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1823 compilable = ci_env.compilable(); |
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1824 |
0 | 1825 if (ci_env.failing()) { |
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1826 const char* retry_message = ci_env.retry_message(); |
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1827 if (_compilation_log != NULL) { |
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1828 _compilation_log->log_failure(thread, task, ci_env.failure_reason(), retry_message); |
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1829 } |
0 | 1830 if (PrintCompilation) { |
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1831 FormatBufferResource msg = retry_message != NULL ? |
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1832 err_msg_res("COMPILE SKIPPED: %s (%s)", ci_env.failure_reason(), retry_message) : |
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1833 err_msg_res("COMPILE SKIPPED: %s", ci_env.failure_reason()); |
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1834 task->print_compilation(tty, msg); |
0 | 1835 } |
1836 } else { | |
1837 task->mark_success(); | |
1838 task->set_num_inlined_bytecodes(ci_env.num_inlined_bytecodes()); | |
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1839 if (_compilation_log != NULL) { |
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1840 nmethod* code = task->code(); |
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1841 if (code != NULL) { |
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1842 _compilation_log->log_nmethod(thread, code); |
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1843 } |
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1844 } |
0 | 1845 } |
1846 } | |
1847 pop_jni_handle_block(); | |
1848 | |
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1849 methodHandle method(thread, task->method()); |
0 | 1850 |
1851 DTRACE_METHOD_COMPILE_END_PROBE(compiler(task->comp_level()), method, task->is_success()); | |
1852 | |
1853 collect_statistics(thread, time, task); | |
1854 | |
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1855 if (PrintCompilation && PrintCompilation2) { |
4047 | 1856 tty->print("%7d ", (int) tty->time_stamp().milliseconds()); // print timestamp |
1857 tty->print("%4d ", compile_id); // print compilation number | |
1858 tty->print("%s ", (is_osr ? "%" : " ")); | |
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1859 int code_size = (task->code() == NULL) ? 0 : task->code()->total_size(); |
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1860 tty->print_cr("size: %d time: %d inlined: %d bytes", code_size, (int)time.milliseconds(), task->num_inlined_bytecodes()); |
4047 | 1861 } |
1862 | |
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1863 // Disable compilation, if required. |
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1864 switch (compilable) { |
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1865 case ciEnv::MethodCompilable_never: |
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1866 if (is_osr) |
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1867 method->set_not_osr_compilable_quietly(); |
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1868 else |
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1869 method->set_not_compilable_quietly(); |
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1870 break; |
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1871 case ciEnv::MethodCompilable_not_at_tier: |
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1872 if (is_osr) |
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1873 method->set_not_osr_compilable_quietly(task->comp_level()); |
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1874 else |
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1875 method->set_not_compilable_quietly(task->comp_level()); |
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1876 break; |
0 | 1877 } |
1878 | |
1879 // Note that the queued_for_compilation bits are cleared without | |
1880 // protection of a mutex. [They were set by the requester thread, | |
1881 // when adding the task to the complie queue -- at which time the | |
1882 // compile queue lock was held. Subsequently, we acquired the compile | |
1883 // queue lock to get this task off the compile queue; thus (to belabour | |
1884 // the point somewhat) our clearing of the bits must be occurring | |
1885 // only after the setting of the bits. See also 14012000 above. | |
1886 method->clear_queued_for_compilation(); | |
1887 | |
1888 #ifdef ASSERT | |
1889 if (CollectedHeap::fired_fake_oom()) { | |
1890 // The current compile received a fake OOM during compilation so | |
1891 // go ahead and exit the VM since the test apparently succeeded | |
1892 tty->print_cr("*** Shutting down VM after successful fake OOM"); | |
1893 vm_exit(0); | |
1894 } | |
1895 #endif | |
1896 } | |
1897 | |
1898 // ------------------------------------------------------------------ | |
1202 | 1899 // CompileBroker::handle_full_code_cache |
1900 // | |
1901 // The CodeCache is full. Print out warning and disable compilation or | |
1902 // try code cache cleaning so compilation can continue later. | |
1903 void CompileBroker::handle_full_code_cache() { | |
1904 UseInterpreter = true; | |
1905 if (UseCompiler || AlwaysCompileLoopMethods ) { | |
1728
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1906 if (xtty != NULL) { |
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1907 stringStream s; |
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1908 // Dump code cache state into a buffer before locking the tty, |
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1909 // because log_state() will use locks causing lock conflicts. |
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1910 CodeCache::log_state(&s); |
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1911 // Lock to prevent tearing |
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1912 ttyLocker ttyl; |
1728
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1913 xtty->begin_elem("code_cache_full"); |
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1914 xtty->print(s.as_string()); |
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1915 xtty->stamp(); |
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1916 xtty->end_elem(); |
1202 | 1917 } |
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1918 warning("CodeCache is full. Compiler has been disabled."); |
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1919 warning("Try increasing the code cache size using -XX:ReservedCodeCacheSize="); |
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1920 CodeCache::print_bounds(tty); |
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1921 #ifndef PRODUCT |
1202 | 1922 if (CompileTheWorld || ExitOnFullCodeCache) { |
1923 before_exit(JavaThread::current()); | |
1924 exit_globals(); // will delete tty | |
1925 vm_direct_exit(CompileTheWorld ? 0 : 1); | |
1926 } | |
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1927 #endif |
1202 | 1928 if (UseCodeCacheFlushing) { |
1929 NMethodSweeper::handle_full_code_cache(true); | |
1930 } else { | |
1931 UseCompiler = false; | |
1932 AlwaysCompileLoopMethods = false; | |
1933 } | |
1934 } | |
1935 } | |
1936 | |
1937 // ------------------------------------------------------------------ | |
0 | 1938 // CompileBroker::set_last_compile |
1939 // | |
1940 // Record this compilation for debugging purposes. | |
1941 void CompileBroker::set_last_compile(CompilerThread* thread, methodHandle method, bool is_osr, int comp_level) { | |
1942 ResourceMark rm; | |
1943 char* method_name = method->name()->as_C_string(); | |
1944 strncpy(_last_method_compiled, method_name, CompileBroker::name_buffer_length); | |
1945 char current_method[CompilerCounters::cmname_buffer_length]; | |
1946 size_t maxLen = CompilerCounters::cmname_buffer_length; | |
1947 | |
1948 if (UsePerfData) { | |
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1949 const char* class_name = method->method_holder()->name()->as_C_string(); |
0 | 1950 |
1951 size_t s1len = strlen(class_name); | |
1952 size_t s2len = strlen(method_name); | |
1953 | |
1954 // check if we need to truncate the string | |
1955 if (s1len + s2len + 2 > maxLen) { | |
1956 | |
1957 // the strategy is to lop off the leading characters of the | |
1958 // class name and the trailing characters of the method name. | |
1959 | |
1960 if (s2len + 2 > maxLen) { | |
1961 // lop of the entire class name string, let snprintf handle | |
1962 // truncation of the method name. | |
1963 class_name += s1len; // null string | |
1964 } | |
1965 else { | |
1966 // lop off the extra characters from the front of the class name | |
1967 class_name += ((s1len + s2len + 2) - maxLen); | |
1968 } | |
1969 } | |
1970 | |
1971 jio_snprintf(current_method, maxLen, "%s %s", class_name, method_name); | |
1972 } | |
1973 | |
1974 if (CICountOSR && is_osr) { | |
1975 _last_compile_type = osr_compile; | |
1976 } else { | |
1977 _last_compile_type = normal_compile; | |
1978 } | |
1979 _last_compile_level = comp_level; | |
1980 | |
1981 if (UsePerfData) { | |
1982 CompilerCounters* counters = thread->counters(); | |
1983 counters->set_current_method(current_method); | |
1984 counters->set_compile_type((jlong)_last_compile_type); | |
1985 } | |
1986 } | |
1987 | |
1988 | |
1989 // ------------------------------------------------------------------ | |
1990 // CompileBroker::push_jni_handle_block | |
1991 // | |
1992 // Push on a new block of JNI handles. | |
1993 void CompileBroker::push_jni_handle_block() { | |
1994 JavaThread* thread = JavaThread::current(); | |
1995 | |
1996 // Allocate a new block for JNI handles. | |
1997 // Inlined code from jni_PushLocalFrame() | |
1998 JNIHandleBlock* java_handles = thread->active_handles(); | |
1999 JNIHandleBlock* compile_handles = JNIHandleBlock::allocate_block(thread); | |
2000 assert(compile_handles != NULL && java_handles != NULL, "should not be NULL"); | |
2001 compile_handles->set_pop_frame_link(java_handles); // make sure java handles get gc'd. | |
2002 thread->set_active_handles(compile_handles); | |
2003 } | |
2004 | |
2005 | |
2006 // ------------------------------------------------------------------ | |
2007 // CompileBroker::pop_jni_handle_block | |
2008 // | |
2009 // Pop off the current block of JNI handles. | |
2010 void CompileBroker::pop_jni_handle_block() { | |
2011 JavaThread* thread = JavaThread::current(); | |
2012 | |
2013 // Release our JNI handle block | |
2014 JNIHandleBlock* compile_handles = thread->active_handles(); | |
2015 JNIHandleBlock* java_handles = compile_handles->pop_frame_link(); | |
2016 thread->set_active_handles(java_handles); | |
2017 compile_handles->set_pop_frame_link(NULL); | |
2018 JNIHandleBlock::release_block(compile_handles, thread); // may block | |
2019 } | |
2020 | |
2021 | |
2022 // ------------------------------------------------------------------ | |
2023 // CompileBroker::check_break_at | |
2024 // | |
2025 // Should the compilation break at the current compilation. | |
2026 bool CompileBroker::check_break_at(methodHandle method, int compile_id, bool is_osr) { | |
2027 if (CICountOSR && is_osr && (compile_id == CIBreakAtOSR)) { | |
2028 return true; | |
2029 } else if( CompilerOracle::should_break_at(method) ) { // break when compiling | |
2030 return true; | |
2031 } else { | |
2032 return (compile_id == CIBreakAt); | |
2033 } | |
2034 } | |
2035 | |
2036 // ------------------------------------------------------------------ | |
2037 // CompileBroker::collect_statistics | |
2038 // | |
2039 // Collect statistics about the compilation. | |
2040 | |
2041 void CompileBroker::collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task) { | |
2042 bool success = task->is_success(); | |
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changeset
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2043 methodHandle method (thread, task->method()); |
0 | 2044 uint compile_id = task->compile_id(); |
2045 bool is_osr = (task->osr_bci() != standard_entry_bci); | |
2046 nmethod* code = task->code(); | |
2047 CompilerCounters* counters = thread->counters(); | |
2048 | |
2049 assert(code == NULL || code->is_locked_by_vm(), "will survive the MutexLocker"); | |
2050 MutexLocker locker(CompileStatistics_lock); | |
2051 | |
2052 // _perf variables are production performance counters which are | |
2053 // updated regardless of the setting of the CITime and CITimeEach flags | |
2054 // | |
2055 if (!success) { | |
2056 _total_bailout_count++; | |
2057 if (UsePerfData) { | |
2058 _perf_last_failed_method->set_value(counters->current_method()); | |
2059 _perf_last_failed_type->set_value(counters->compile_type()); | |
2060 _perf_total_bailout_count->inc(); | |
2061 } | |
2062 } else if (code == NULL) { | |
2063 if (UsePerfData) { | |
2064 _perf_last_invalidated_method->set_value(counters->current_method()); | |
2065 _perf_last_invalidated_type->set_value(counters->compile_type()); | |
2066 _perf_total_invalidated_count->inc(); | |
2067 } | |
2068 _total_invalidated_count++; | |
2069 } else { | |
2070 // Compilation succeeded | |
2071 | |
2072 // update compilation ticks - used by the implementation of | |
2073 // java.lang.management.CompilationMBean | |
2074 _perf_total_compilation->inc(time.ticks()); | |
2075 | |
2076 if (CITime) { | |
2077 _t_total_compilation.add(time); | |
2078 if (is_osr) { | |
2079 _t_osr_compilation.add(time); | |
2080 _sum_osr_bytes_compiled += method->code_size() + task->num_inlined_bytecodes(); | |
2081 } else { | |
2082 _t_standard_compilation.add(time); | |
2083 _sum_standard_bytes_compiled += method->code_size() + task->num_inlined_bytecodes(); | |
2084 } | |
2085 } | |
2086 | |
2087 if (UsePerfData) { | |
2088 // save the name of the last method compiled | |
2089 _perf_last_method->set_value(counters->current_method()); | |
2090 _perf_last_compile_type->set_value(counters->compile_type()); | |
2091 _perf_last_compile_size->set_value(method->code_size() + | |
2092 task->num_inlined_bytecodes()); | |
2093 if (is_osr) { | |
2094 _perf_osr_compilation->inc(time.ticks()); | |
2095 _perf_sum_osr_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes()); | |
2096 } else { | |
2097 _perf_standard_compilation->inc(time.ticks()); | |
2098 _perf_sum_standard_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes()); | |
2099 } | |
2100 } | |
2101 | |
2102 if (CITimeEach) { | |
2103 float bytes_per_sec = 1.0 * (method->code_size() + task->num_inlined_bytecodes()) / time.seconds(); | |
2104 tty->print_cr("%3d seconds: %f bytes/sec : %f (bytes %d + %d inlined)", | |
2105 compile_id, time.seconds(), bytes_per_sec, method->code_size(), task->num_inlined_bytecodes()); | |
2106 } | |
2107 | |
2108 // Collect counts of successful compilations | |
1748 | 2109 _sum_nmethod_size += code->total_size(); |
2110 _sum_nmethod_code_size += code->insts_size(); | |
0 | 2111 _total_compile_count++; |
2112 | |
2113 if (UsePerfData) { | |
1748 | 2114 _perf_sum_nmethod_size->inc( code->total_size()); |
2115 _perf_sum_nmethod_code_size->inc(code->insts_size()); | |
0 | 2116 _perf_total_compile_count->inc(); |
2117 } | |
2118 | |
2119 if (is_osr) { | |
2120 if (UsePerfData) _perf_total_osr_compile_count->inc(); | |
2121 _total_osr_compile_count++; | |
2122 } else { | |
2123 if (UsePerfData) _perf_total_standard_compile_count->inc(); | |
2124 _total_standard_compile_count++; | |
2125 } | |
2126 } | |
2127 // set the current method for the thread to null | |
2128 if (UsePerfData) counters->set_current_method(""); | |
2129 } | |
2130 | |
2131 | |
2132 | |
2133 void CompileBroker::print_times() { | |
2134 tty->cr(); | |
2135 tty->print_cr("Accumulated compiler times (for compiled methods only)"); | |
2136 tty->print_cr("------------------------------------------------"); | |
2137 //0000000000111111111122222222223333333333444444444455555555556666666666 | |
2138 //0123456789012345678901234567890123456789012345678901234567890123456789 | |
2139 tty->print_cr(" Total compilation time : %6.3f s", CompileBroker::_t_total_compilation.seconds()); | |
2140 tty->print_cr(" Standard compilation : %6.3f s, Average : %2.3f", | |
2141 CompileBroker::_t_standard_compilation.seconds(), | |
2142 CompileBroker::_t_standard_compilation.seconds() / CompileBroker::_total_standard_compile_count); | |
2143 tty->print_cr(" On stack replacement : %6.3f s, Average : %2.3f", CompileBroker::_t_osr_compilation.seconds(), CompileBroker::_t_osr_compilation.seconds() / CompileBroker::_total_osr_compile_count); | |
1131 | 2144 |
1783 | 2145 if (compiler(CompLevel_simple) != NULL) { |
2146 compiler(CompLevel_simple)->print_timers(); | |
0 | 2147 } |
1783 | 2148 if (compiler(CompLevel_full_optimization) != NULL) { |
2149 compiler(CompLevel_full_optimization)->print_timers(); | |
2150 } | |
0 | 2151 tty->cr(); |
2152 int tcb = CompileBroker::_sum_osr_bytes_compiled + CompileBroker::_sum_standard_bytes_compiled; | |
2153 tty->print_cr(" Total compiled bytecodes : %6d bytes", tcb); | |
2154 tty->print_cr(" Standard compilation : %6d bytes", CompileBroker::_sum_standard_bytes_compiled); | |
2155 tty->print_cr(" On stack replacement : %6d bytes", CompileBroker::_sum_osr_bytes_compiled); | |
2156 int bps = (int)(tcb / CompileBroker::_t_total_compilation.seconds()); | |
2157 tty->print_cr(" Average compilation speed: %6d bytes/s", bps); | |
2158 tty->cr(); | |
2159 tty->print_cr(" nmethod code size : %6d bytes", CompileBroker::_sum_nmethod_code_size); | |
2160 tty->print_cr(" nmethod total size : %6d bytes", CompileBroker::_sum_nmethod_size); | |
2161 } | |
2162 | |
2163 | |
2164 // Debugging output for failure | |
2165 void CompileBroker::print_last_compile() { | |
2166 if ( _last_compile_level != CompLevel_none && | |
2167 compiler(_last_compile_level) != NULL && | |
2168 _last_method_compiled != NULL && | |
2169 _last_compile_type != no_compile) { | |
2170 if (_last_compile_type == osr_compile) { | |
2171 tty->print_cr("Last parse: [osr]%d+++(%d) %s", | |
2172 _osr_compilation_id, _last_compile_level, _last_method_compiled); | |
2173 } else { | |
2174 tty->print_cr("Last parse: %d+++(%d) %s", | |
2175 _compilation_id, _last_compile_level, _last_method_compiled); | |
2176 } | |
2177 } | |
2178 } | |
2179 | |
2180 | |
2181 void CompileBroker::print_compiler_threads_on(outputStream* st) { | |
2182 #ifndef PRODUCT | |
2183 st->print_cr("Compiler thread printing unimplemented."); | |
2184 st->cr(); | |
2185 #endif | |
2186 } |