Mercurial > hg > truffle
annotate src/share/vm/compiler/compileBroker.cpp @ 6948:e522a00b91aa
Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/ after NPG - C++ build works
author | Doug Simon <doug.simon@oracle.com> |
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date | Mon, 12 Nov 2012 23:14:12 +0100 |
parents | 957c266d8bc5 18fb7da42534 |
children | 1baf7f1e3f23 |
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 | |
54 #ifdef COMPILER2 | |
55 #include "opto/c2compiler.hpp" | |
56 #endif | |
57 #ifdef SHARK | |
58 #include "shark/sharkCompiler.hpp" | |
59 #endif | |
0 | 60 |
61 #ifdef DTRACE_ENABLED | |
62 | |
63 // Only bother with this argument setup if dtrace is available | |
64 | |
4006 | 65 #ifndef USDT2 |
0 | 66 HS_DTRACE_PROBE_DECL8(hotspot, method__compile__begin, |
67 char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t); | |
68 HS_DTRACE_PROBE_DECL9(hotspot, method__compile__end, | |
69 char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t, bool); | |
70 | |
71 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method) \ | |
72 { \ | |
73 char* comp_name = (char*)(compiler)->name(); \ | |
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74 Symbol* klass_name = (method)->klass_name(); \ |
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75 Symbol* name = (method)->name(); \ |
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76 Symbol* signature = (method)->signature(); \ |
0 | 77 HS_DTRACE_PROBE8(hotspot, method__compile__begin, \ |
78 comp_name, strlen(comp_name), \ | |
79 klass_name->bytes(), klass_name->utf8_length(), \ | |
80 name->bytes(), name->utf8_length(), \ | |
81 signature->bytes(), signature->utf8_length()); \ | |
82 } | |
83 | |
84 #define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, success) \ | |
85 { \ | |
86 char* comp_name = (char*)(compiler)->name(); \ | |
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87 Symbol* klass_name = (method)->klass_name(); \ |
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88 Symbol* name = (method)->name(); \ |
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89 Symbol* signature = (method)->signature(); \ |
0 | 90 HS_DTRACE_PROBE9(hotspot, method__compile__end, \ |
91 comp_name, strlen(comp_name), \ | |
92 klass_name->bytes(), klass_name->utf8_length(), \ | |
93 name->bytes(), name->utf8_length(), \ | |
94 signature->bytes(), signature->utf8_length(), (success)); \ | |
95 } | |
96 | |
4006 | 97 #else /* USDT2 */ |
98 | |
99 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method) \ | |
100 { \ | |
101 char* comp_name = (char*)(compiler)->name(); \ | |
102 Symbol* klass_name = (method)->klass_name(); \ | |
103 Symbol* name = (method)->name(); \ | |
104 Symbol* signature = (method)->signature(); \ | |
105 HOTSPOT_METHOD_COMPILE_BEGIN( \ | |
106 comp_name, strlen(comp_name), \ | |
107 (char *) klass_name->bytes(), klass_name->utf8_length(), \ | |
108 (char *) name->bytes(), name->utf8_length(), \ | |
109 (char *) signature->bytes(), signature->utf8_length()); \ | |
110 } | |
111 | |
112 #define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, success) \ | |
113 { \ | |
114 char* comp_name = (char*)(compiler)->name(); \ | |
115 Symbol* klass_name = (method)->klass_name(); \ | |
116 Symbol* name = (method)->name(); \ | |
117 Symbol* signature = (method)->signature(); \ | |
118 HOTSPOT_METHOD_COMPILE_END( \ | |
119 comp_name, strlen(comp_name), \ | |
120 (char *) klass_name->bytes(), klass_name->utf8_length(), \ | |
121 (char *) name->bytes(), name->utf8_length(), \ | |
122 (char *) signature->bytes(), signature->utf8_length(), (success)); \ | |
123 } | |
124 #endif /* USDT2 */ | |
125 | |
0 | 126 #else // ndef DTRACE_ENABLED |
127 | |
128 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method) | |
129 #define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, success) | |
130 | |
131 #endif // ndef DTRACE_ENABLED | |
132 | |
133 bool CompileBroker::_initialized = false; | |
134 volatile bool CompileBroker::_should_block = false; | |
1202 | 135 volatile jint CompileBroker::_should_compile_new_jobs = run_compilation; |
0 | 136 |
137 // The installed compiler(s) | |
138 AbstractCompiler* CompileBroker::_compilers[2]; | |
139 | |
140 // These counters are used for assigning id's to each compilation | |
141 uint CompileBroker::_compilation_id = 0; | |
142 uint CompileBroker::_osr_compilation_id = 0; | |
143 | |
144 // Debugging information | |
145 int CompileBroker::_last_compile_type = no_compile; | |
146 int CompileBroker::_last_compile_level = CompLevel_none; | |
147 char CompileBroker::_last_method_compiled[CompileBroker::name_buffer_length]; | |
148 | |
149 // Performance counters | |
150 PerfCounter* CompileBroker::_perf_total_compilation = NULL; | |
151 PerfCounter* CompileBroker::_perf_osr_compilation = NULL; | |
152 PerfCounter* CompileBroker::_perf_standard_compilation = NULL; | |
153 | |
154 PerfCounter* CompileBroker::_perf_total_bailout_count = NULL; | |
155 PerfCounter* CompileBroker::_perf_total_invalidated_count = NULL; | |
156 PerfCounter* CompileBroker::_perf_total_compile_count = NULL; | |
157 PerfCounter* CompileBroker::_perf_total_osr_compile_count = NULL; | |
158 PerfCounter* CompileBroker::_perf_total_standard_compile_count = NULL; | |
159 | |
160 PerfCounter* CompileBroker::_perf_sum_osr_bytes_compiled = NULL; | |
161 PerfCounter* CompileBroker::_perf_sum_standard_bytes_compiled = NULL; | |
162 PerfCounter* CompileBroker::_perf_sum_nmethod_size = NULL; | |
163 PerfCounter* CompileBroker::_perf_sum_nmethod_code_size = NULL; | |
164 | |
165 PerfStringVariable* CompileBroker::_perf_last_method = NULL; | |
166 PerfStringVariable* CompileBroker::_perf_last_failed_method = NULL; | |
167 PerfStringVariable* CompileBroker::_perf_last_invalidated_method = NULL; | |
168 PerfVariable* CompileBroker::_perf_last_compile_type = NULL; | |
169 PerfVariable* CompileBroker::_perf_last_compile_size = NULL; | |
170 PerfVariable* CompileBroker::_perf_last_failed_type = NULL; | |
171 PerfVariable* CompileBroker::_perf_last_invalidated_type = NULL; | |
172 | |
173 // Timers and counters for generating statistics | |
174 elapsedTimer CompileBroker::_t_total_compilation; | |
175 elapsedTimer CompileBroker::_t_osr_compilation; | |
176 elapsedTimer CompileBroker::_t_standard_compilation; | |
177 | |
178 int CompileBroker::_total_bailout_count = 0; | |
179 int CompileBroker::_total_invalidated_count = 0; | |
180 int CompileBroker::_total_compile_count = 0; | |
181 int CompileBroker::_total_osr_compile_count = 0; | |
182 int CompileBroker::_total_standard_compile_count = 0; | |
183 | |
184 int CompileBroker::_sum_osr_bytes_compiled = 0; | |
185 int CompileBroker::_sum_standard_bytes_compiled = 0; | |
186 int CompileBroker::_sum_nmethod_size = 0; | |
187 int CompileBroker::_sum_nmethod_code_size = 0; | |
188 | |
1783 | 189 CompileQueue* CompileBroker::_c2_method_queue = NULL; |
190 CompileQueue* CompileBroker::_c1_method_queue = NULL; | |
0 | 191 CompileTask* CompileBroker::_task_free_list = NULL; |
192 | |
193 GrowableArray<CompilerThread*>* CompileBroker::_method_threads = NULL; | |
194 | |
195 | |
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196 class CompilationLog : public StringEventLog { |
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197 public: |
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198 CompilationLog() : StringEventLog("Compilation events") { |
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199 } |
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200 |
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201 void log_compile(JavaThread* thread, CompileTask* task) { |
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202 StringLogMessage lm; |
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203 stringStream sstr = lm.stream(); |
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204 // msg.time_stamp().update_to(tty->time_stamp().ticks()); |
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205 task->print_compilation(&sstr, NULL, true); |
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206 log(thread, "%s", (const char*)lm); |
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207 } |
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208 |
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209 void log_nmethod(JavaThread* thread, nmethod* nm) { |
4944 | 210 log(thread, "nmethod %d%s " INTPTR_FORMAT " code ["INTPTR_FORMAT ", " INTPTR_FORMAT "]", |
211 nm->compile_id(), nm->is_osr_method() ? "%" : "", | |
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212 nm, nm->code_begin(), nm->code_end()); |
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213 } |
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214 |
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215 void log_failure(JavaThread* thread, CompileTask* task, const char* reason, const char* retry_message) { |
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216 StringLogMessage lm; |
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217 lm.print("%4d COMPILE SKIPPED: %s", task->compile_id(), reason); |
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218 if (retry_message != NULL) { |
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219 lm.append(" (%s)", retry_message); |
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220 } |
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221 lm.print("\n"); |
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222 log(thread, "%s", (const char*)lm); |
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223 } |
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224 }; |
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225 |
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226 static CompilationLog* _compilation_log = NULL; |
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227 |
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228 void compileBroker_init() { |
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229 if (LogEvents) { |
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230 _compilation_log = new CompilationLog(); |
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231 } |
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232 } |
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233 |
0 | 234 CompileTaskWrapper::CompileTaskWrapper(CompileTask* task) { |
235 CompilerThread* thread = CompilerThread::current(); | |
236 thread->set_task(task); | |
237 CompileLog* log = thread->log(); | |
238 if (log != NULL) task->log_task_start(log); | |
239 } | |
240 | |
241 CompileTaskWrapper::~CompileTaskWrapper() { | |
242 CompilerThread* thread = CompilerThread::current(); | |
243 CompileTask* task = thread->task(); | |
244 CompileLog* log = thread->log(); | |
245 if (log != NULL) task->log_task_done(log); | |
246 thread->set_task(NULL); | |
247 task->set_code_handle(NULL); | |
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248 thread->set_env(NULL); |
0 | 249 if (task->is_blocking()) { |
250 MutexLocker notifier(task->lock(), thread); | |
251 task->mark_complete(); | |
252 // Notify the waiting thread that the compilation has completed. | |
253 task->lock()->notify_all(); | |
254 } else { | |
255 task->mark_complete(); | |
256 | |
257 // By convention, the compiling thread is responsible for | |
258 // recycling a non-blocking CompileTask. | |
259 CompileBroker::free_task(task); | |
260 } | |
261 } | |
262 | |
263 | |
264 // ------------------------------------------------------------------ | |
265 // CompileTask::initialize | |
266 void CompileTask::initialize(int compile_id, | |
267 methodHandle method, | |
268 int osr_bci, | |
269 int comp_level, | |
270 methodHandle hot_method, | |
271 int hot_count, | |
272 const char* comment, | |
273 bool is_blocking) { | |
274 assert(!_lock->is_locked(), "bad locking"); | |
275 | |
276 _compile_id = compile_id; | |
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277 _method = method(); |
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278 _method_loader = JNIHandles::make_global(_method->method_holder()->class_loader()); |
0 | 279 _osr_bci = osr_bci; |
280 _is_blocking = is_blocking; | |
281 _comp_level = comp_level; | |
282 _num_inlined_bytecodes = 0; | |
283 | |
284 _is_complete = false; | |
285 _is_success = false; | |
286 _code_handle = NULL; | |
287 | |
288 _hot_method = NULL; | |
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289 _hot_method_loader = NULL; |
0 | 290 _hot_count = hot_count; |
291 _time_queued = 0; // tidy | |
292 _comment = comment; | |
293 | |
294 if (LogCompilation) { | |
295 _time_queued = os::elapsed_counter(); | |
296 if (hot_method.not_null()) { | |
297 if (hot_method == method) { | |
298 _hot_method = _method; | |
299 } else { | |
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300 _hot_method = hot_method(); |
0 | 301 } |
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302 _hot_method_loader = JNIHandles::make_global(_hot_method->method_holder()->class_loader()); |
0 | 303 } |
304 } | |
305 | |
306 _next = NULL; | |
307 } | |
308 | |
309 // ------------------------------------------------------------------ | |
310 // CompileTask::code/set_code | |
311 nmethod* CompileTask::code() const { | |
312 if (_code_handle == NULL) return NULL; | |
313 return _code_handle->code(); | |
314 } | |
315 void CompileTask::set_code(nmethod* nm) { | |
316 if (_code_handle == NULL && nm == NULL) return; | |
317 guarantee(_code_handle != NULL, ""); | |
318 _code_handle->set_code(nm); | |
319 if (nm == NULL) _code_handle = NULL; // drop the handle also | |
320 } | |
321 | |
322 // ------------------------------------------------------------------ | |
323 // CompileTask::free | |
324 void CompileTask::free() { | |
325 set_code(NULL); | |
326 assert(!_lock->is_locked(), "Should not be locked when freed"); | |
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327 JNIHandles::destroy_global(_method_loader); |
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328 JNIHandles::destroy_global(_hot_method_loader); |
0 | 329 } |
330 | |
331 | |
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332 void CompileTask::mark_on_stack() { |
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333 // Mark these methods as something redefine classes cannot remove. |
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334 _method->set_on_stack(true); |
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335 if (_hot_method != NULL) { |
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336 _hot_method->set_on_stack(true); |
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337 } |
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338 } |
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339 |
0 | 340 // ------------------------------------------------------------------ |
341 // CompileTask::print | |
342 void CompileTask::print() { | |
343 tty->print("<CompileTask compile_id=%d ", _compile_id); | |
344 tty->print("method="); | |
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345 _method->print_name(tty); |
0 | 346 tty->print_cr(" osr_bci=%d is_blocking=%s is_complete=%s is_success=%s>", |
347 _osr_bci, bool_to_str(_is_blocking), | |
348 bool_to_str(_is_complete), bool_to_str(_is_success)); | |
349 } | |
350 | |
1783 | 351 |
0 | 352 // ------------------------------------------------------------------ |
353 // CompileTask::print_line_on_error | |
354 // | |
355 // This function is called by fatal error handler when the thread | |
356 // causing troubles is a compiler thread. | |
357 // | |
358 // Do not grab any lock, do not allocate memory. | |
359 // | |
360 // Otherwise it's the same as CompileTask::print_line() | |
361 // | |
362 void CompileTask::print_line_on_error(outputStream* st, char* buf, int buflen) { | |
363 // print compiler name | |
364 st->print("%s:", CompileBroker::compiler(comp_level())->name()); | |
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365 print_compilation(st); |
0 | 366 } |
367 | |
368 // ------------------------------------------------------------------ | |
369 // CompileTask::print_line | |
370 void CompileTask::print_line() { | |
371 ttyLocker ttyl; // keep the following output all in one block | |
372 // print compiler name if requested | |
373 if (CIPrintCompilerName) tty->print("%s:", CompileBroker::compiler(comp_level())->name()); | |
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374 print_compilation(); |
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375 } |
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376 |
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377 |
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378 // ------------------------------------------------------------------ |
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379 // CompileTask::print_compilation_impl |
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380 void CompileTask::print_compilation_impl(outputStream* st, Method* method, int compile_id, int comp_level, |
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381 bool is_osr_method, int osr_bci, bool is_blocking, |
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382 const char* msg, bool short_form) { |
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383 if (!short_form) { |
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384 st->print("%7d ", (int) st->time_stamp().milliseconds()); // print timestamp |
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385 } |
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386 st->print("%4d ", compile_id); // print compilation number |
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387 |
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388 // For unloaded methods the transition to zombie occurs after the |
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389 // method is cleared so it's impossible to report accurate |
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390 // information for that case. |
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391 bool is_synchronized = false; |
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392 bool has_exception_handler = false; |
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393 bool is_native = false; |
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394 if (method != NULL) { |
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395 is_synchronized = method->is_synchronized(); |
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396 has_exception_handler = method->has_exception_handler(); |
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397 is_native = method->is_native(); |
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398 } |
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399 // method attributes |
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400 const char compile_type = is_osr_method ? '%' : ' '; |
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401 const char sync_char = is_synchronized ? 's' : ' '; |
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402 const char exception_char = has_exception_handler ? '!' : ' '; |
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403 const char blocking_char = is_blocking ? 'b' : ' '; |
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404 const char native_char = is_native ? 'n' : ' '; |
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405 |
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406 // print method attributes |
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407 st->print("%c%c%c%c%c ", compile_type, sync_char, exception_char, blocking_char, native_char); |
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408 |
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409 if (TieredCompilation) { |
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410 if (comp_level != -1) st->print("%d ", comp_level); |
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411 else st->print("- "); |
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412 } |
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413 st->print(" "); // more indent |
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414 |
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415 if (method == NULL) { |
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416 st->print("(method)"); |
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417 } else { |
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418 method->print_short_name(st); |
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419 if (is_osr_method) { |
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420 st->print(" @ %d", osr_bci); |
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421 } |
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422 if (method->is_native()) |
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423 st->print(" (native)"); |
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424 else |
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425 st->print(" (%d bytes)", method->code_size()); |
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426 } |
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427 |
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428 if (msg != NULL) { |
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429 st->print(" %s", msg); |
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430 } |
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431 if (!short_form) { |
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432 st->cr(); |
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433 } |
0 | 434 } |
435 | |
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436 // ------------------------------------------------------------------ |
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437 // CompileTask::print_inlining |
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438 void CompileTask::print_inlining(outputStream* st, ciMethod* method, int inline_level, int bci, const char* msg) { |
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439 // 1234567 |
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440 st->print(" "); // print timestamp |
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441 // 1234 |
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442 st->print(" "); // print compilation number |
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443 |
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444 // method attributes |
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445 if (method->is_loaded()) { |
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446 const char sync_char = method->is_synchronized() ? 's' : ' '; |
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447 const char exception_char = method->has_exception_handlers() ? '!' : ' '; |
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448 const char monitors_char = method->has_monitor_bytecodes() ? 'm' : ' '; |
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449 |
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450 // print method attributes |
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451 st->print(" %c%c%c ", sync_char, exception_char, monitors_char); |
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452 } else { |
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453 // %s!bn |
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454 st->print(" "); // print method attributes |
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455 } |
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456 |
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457 if (TieredCompilation) { |
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458 st->print(" "); |
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459 } |
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460 st->print(" "); // more indent |
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461 st->print(" "); // initial inlining indent |
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462 |
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463 for (int i = 0; i < inline_level; i++) st->print(" "); |
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464 |
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465 st->print("@ %d ", bci); // print bci |
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466 method->print_short_name(st); |
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467 if (method->is_loaded()) |
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468 st->print(" (%d bytes)", method->code_size()); |
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469 else |
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470 st->print(" (not loaded)"); |
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471 |
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472 if (msg != NULL) { |
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473 st->print(" %s", msg); |
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474 } |
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475 st->cr(); |
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476 } |
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477 |
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478 // ------------------------------------------------------------------ |
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479 // CompileTask::print_inline_indent |
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480 void CompileTask::print_inline_indent(int inline_level, outputStream* st) { |
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481 // 1234567 |
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482 st->print(" "); // print timestamp |
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483 // 1234 |
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484 st->print(" "); // print compilation number |
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485 // %s!bn |
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486 st->print(" "); // print method attributes |
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487 if (TieredCompilation) { |
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488 st->print(" "); |
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489 } |
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490 st->print(" "); // more indent |
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491 st->print(" "); // initial inlining indent |
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492 for (int i = 0; i < inline_level; i++) st->print(" "); |
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493 } |
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494 |
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495 // ------------------------------------------------------------------ |
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496 // CompileTask::print_compilation |
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497 void CompileTask::print_compilation(outputStream* st, const char* msg, bool short_form) { |
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498 bool is_osr_method = osr_bci() != InvocationEntryBci; |
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499 print_compilation_impl(st, method(), compile_id(), comp_level(), is_osr_method, osr_bci(), is_blocking(), msg, short_form); |
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500 } |
0 | 501 |
502 // ------------------------------------------------------------------ | |
503 // CompileTask::log_task | |
504 void CompileTask::log_task(xmlStream* log) { | |
505 Thread* thread = Thread::current(); | |
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506 methodHandle method(thread, this->method()); |
0 | 507 ResourceMark rm(thread); |
508 | |
509 // <task id='9' method='M' osr_bci='X' level='1' blocking='1' stamp='1.234'> | |
510 if (_compile_id != 0) log->print(" compile_id='%d'", _compile_id); | |
511 if (_osr_bci != CompileBroker::standard_entry_bci) { | |
512 log->print(" compile_kind='osr'"); // same as nmethod::compile_kind | |
513 } // else compile_kind='c2c' | |
514 if (!method.is_null()) log->method(method); | |
515 if (_osr_bci != CompileBroker::standard_entry_bci) { | |
516 log->print(" osr_bci='%d'", _osr_bci); | |
517 } | |
518 if (_comp_level != CompLevel_highest_tier) { | |
519 log->print(" level='%d'", _comp_level); | |
520 } | |
521 if (_is_blocking) { | |
522 log->print(" blocking='1'"); | |
523 } | |
524 log->stamp(); | |
525 } | |
526 | |
527 | |
528 // ------------------------------------------------------------------ | |
529 // CompileTask::log_task_queued | |
530 void CompileTask::log_task_queued() { | |
531 Thread* thread = Thread::current(); | |
532 ttyLocker ttyl; | |
533 ResourceMark rm(thread); | |
534 | |
535 xtty->begin_elem("task_queued"); | |
536 log_task(xtty); | |
537 if (_comment != NULL) { | |
538 xtty->print(" comment='%s'", _comment); | |
539 } | |
540 if (_hot_method != NULL) { | |
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541 methodHandle hot(thread, _hot_method); |
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542 methodHandle method(thread, _method); |
0 | 543 if (hot() != method()) { |
544 xtty->method(hot); | |
545 } | |
546 } | |
547 if (_hot_count != 0) { | |
548 xtty->print(" hot_count='%d'", _hot_count); | |
549 } | |
550 xtty->end_elem(); | |
551 } | |
552 | |
553 | |
554 // ------------------------------------------------------------------ | |
555 // CompileTask::log_task_start | |
556 void CompileTask::log_task_start(CompileLog* log) { | |
557 log->begin_head("task"); | |
558 log_task(log); | |
559 log->end_head(); | |
560 } | |
561 | |
562 | |
563 // ------------------------------------------------------------------ | |
564 // CompileTask::log_task_done | |
565 void CompileTask::log_task_done(CompileLog* log) { | |
566 Thread* thread = Thread::current(); | |
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567 methodHandle method(thread, this->method()); |
0 | 568 ResourceMark rm(thread); |
569 | |
570 // <task_done ... stamp='1.234'> </task> | |
571 nmethod* nm = code(); | |
572 log->begin_elem("task_done success='%d' nmsize='%d' count='%d'", | |
1748 | 573 _is_success, nm == NULL ? 0 : nm->content_size(), |
0 | 574 method->invocation_count()); |
575 int bec = method->backedge_count(); | |
576 if (bec != 0) log->print(" backedge_count='%d'", bec); | |
577 // Note: "_is_complete" is about to be set, but is not. | |
578 if (_num_inlined_bytecodes != 0) { | |
579 log->print(" inlined_bytes='%d'", _num_inlined_bytecodes); | |
580 } | |
581 log->stamp(); | |
582 log->end_elem(); | |
583 log->tail("task"); | |
584 log->clear_identities(); // next task will have different CI | |
585 if (log->unflushed_count() > 2000) { | |
586 log->flush(); | |
587 } | |
588 log->mark_file_end(); | |
589 } | |
590 | |
591 | |
592 | |
593 // ------------------------------------------------------------------ | |
594 // CompileQueue::add | |
595 // | |
596 // Add a CompileTask to a CompileQueue | |
597 void CompileQueue::add(CompileTask* task) { | |
598 assert(lock()->owned_by_self(), "must own lock"); | |
599 | |
600 task->set_next(NULL); | |
1783 | 601 task->set_prev(NULL); |
0 | 602 |
603 if (_last == NULL) { | |
604 // The compile queue is empty. | |
605 assert(_first == NULL, "queue is empty"); | |
606 _first = task; | |
607 _last = task; | |
608 } else { | |
609 // Append the task to the queue. | |
610 assert(_last->next() == NULL, "not last"); | |
611 _last->set_next(task); | |
1783 | 612 task->set_prev(_last); |
0 | 613 _last = task; |
614 } | |
1783 | 615 ++_size; |
0 | 616 |
617 // Mark the method as being in the compile queue. | |
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618 task->method()->set_queued_for_compilation(); |
0 | 619 |
620 if (CIPrintCompileQueue) { | |
621 print(); | |
622 } | |
623 | |
624 if (LogCompilation && xtty != NULL) { | |
625 task->log_task_queued(); | |
626 } | |
627 | |
628 // Notify CompilerThreads that a task is available. | |
1783 | 629 lock()->notify_all(); |
0 | 630 } |
631 | |
632 // ------------------------------------------------------------------ | |
633 // CompileQueue::get | |
634 // | |
635 // Get the next CompileTask from a CompileQueue | |
636 CompileTask* CompileQueue::get() { | |
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637 NMethodSweeper::possibly_sweep(); |
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638 |
0 | 639 MutexLocker locker(lock()); |
640 // Wait for an available CompileTask. | |
641 while (_first == NULL) { | |
642 // There is no work to be done right now. Wait. | |
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643 if (UseCodeCacheFlushing && (!CompileBroker::should_compile_new_jobs() || CodeCache::needs_flushing())) { |
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644 // During the emergency sweeping periods, wake up and sweep occasionally |
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645 bool timedout = lock()->wait(!Mutex::_no_safepoint_check_flag, NmethodSweepCheckInterval*1000); |
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646 if (timedout) { |
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647 MutexUnlocker ul(lock()); |
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648 // When otherwise not busy, run nmethod sweeping |
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649 NMethodSweeper::possibly_sweep(); |
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650 } |
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651 } else { |
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652 // During normal operation no need to wake up on timer |
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653 lock()->wait(); |
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654 } |
0 | 655 } |
1783 | 656 CompileTask* task = CompilationPolicy::policy()->select_task(this); |
657 remove(task); | |
658 return task; | |
659 } | |
0 | 660 |
1783 | 661 void CompileQueue::remove(CompileTask* task) |
662 { | |
663 assert(lock()->owned_by_self(), "must own lock"); | |
664 if (task->prev() != NULL) { | |
665 task->prev()->set_next(task->next()); | |
666 } else { | |
667 // max is the first element | |
668 assert(task == _first, "Sanity"); | |
669 _first = task->next(); | |
0 | 670 } |
671 | |
1783 | 672 if (task->next() != NULL) { |
673 task->next()->set_prev(task->prev()); | |
674 } else { | |
675 // max is the last element | |
676 assert(task == _last, "Sanity"); | |
677 _last = task->prev(); | |
678 } | |
679 --_size; | |
0 | 680 } |
681 | |
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682 // methods in the compile queue need to be marked as used on the stack |
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683 // so that they don't get reclaimed by Redefine Classes |
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684 void CompileQueue::mark_on_stack() { |
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685 CompileTask* task = _first; |
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686 while (task != NULL) { |
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687 task->mark_on_stack(); |
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688 task = task->next(); |
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689 } |
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690 } |
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691 |
0 | 692 // ------------------------------------------------------------------ |
693 // CompileQueue::print | |
694 void CompileQueue::print() { | |
695 tty->print_cr("Contents of %s", name()); | |
696 tty->print_cr("----------------------"); | |
697 CompileTask* task = _first; | |
698 while (task != NULL) { | |
699 task->print_line(); | |
700 task = task->next(); | |
701 } | |
702 tty->print_cr("----------------------"); | |
703 } | |
704 | |
705 CompilerCounters::CompilerCounters(const char* thread_name, int instance, TRAPS) { | |
706 | |
707 _current_method[0] = '\0'; | |
708 _compile_type = CompileBroker::no_compile; | |
709 | |
710 if (UsePerfData) { | |
711 ResourceMark rm; | |
712 | |
713 // create the thread instance name space string - don't create an | |
714 // instance subspace if instance is -1 - keeps the adapterThread | |
715 // counters from having a ".0" namespace. | |
716 const char* thread_i = (instance == -1) ? thread_name : | |
717 PerfDataManager::name_space(thread_name, instance); | |
718 | |
719 | |
720 char* name = PerfDataManager::counter_name(thread_i, "method"); | |
721 _perf_current_method = | |
722 PerfDataManager::create_string_variable(SUN_CI, name, | |
723 cmname_buffer_length, | |
724 _current_method, CHECK); | |
725 | |
726 name = PerfDataManager::counter_name(thread_i, "type"); | |
727 _perf_compile_type = PerfDataManager::create_variable(SUN_CI, name, | |
728 PerfData::U_None, | |
729 (jlong)_compile_type, | |
730 CHECK); | |
731 | |
732 name = PerfDataManager::counter_name(thread_i, "time"); | |
733 _perf_time = PerfDataManager::create_counter(SUN_CI, name, | |
734 PerfData::U_Ticks, CHECK); | |
735 | |
736 name = PerfDataManager::counter_name(thread_i, "compiles"); | |
737 _perf_compiles = PerfDataManager::create_counter(SUN_CI, name, | |
738 PerfData::U_Events, CHECK); | |
739 } | |
740 } | |
741 | |
742 // ------------------------------------------------------------------ | |
743 // CompileBroker::compilation_init | |
744 // | |
745 // Initialize the Compilation object | |
746 void CompileBroker::compilation_init() { | |
747 _last_method_compiled[0] = '\0'; | |
748 | |
1970 | 749 #ifndef SHARK |
0 | 750 // Set the interface to the current compiler(s). |
1783 | 751 int c1_count = CompilationPolicy::policy()->compiler_count(CompLevel_simple); |
752 int c2_count = CompilationPolicy::policy()->compiler_count(CompLevel_full_optimization); | |
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753 #if defined(GRAAL) |
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754 _compilers[0] = new GraalCompiler(); |
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755 c1_count = 0; |
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756 c2_count = 0; |
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757 #elif defined(COMPILER1) |
1783 | 758 if (c1_count > 0) { |
759 _compilers[0] = new Compiler(); | |
760 } | |
0 | 761 #endif // COMPILER1 |
762 | |
763 #ifdef COMPILER2 | |
1783 | 764 if (c2_count > 0) { |
765 _compilers[1] = new C2Compiler(); | |
766 } | |
0 | 767 #endif // COMPILER2 |
768 | |
1970 | 769 #else // SHARK |
770 int c1_count = 0; | |
771 int c2_count = 1; | |
772 | |
773 _compilers[1] = new SharkCompiler(); | |
774 #endif // SHARK | |
1692 | 775 |
0 | 776 // Initialize the CompileTask free list |
777 _task_free_list = NULL; | |
778 | |
779 // Start the CompilerThreads | |
1783 | 780 init_compiler_threads(c1_count, c2_count); |
0 | 781 // totalTime performance counter is always created as it is required |
782 // by the implementation of java.lang.management.CompilationMBean. | |
783 { | |
784 EXCEPTION_MARK; | |
785 _perf_total_compilation = | |
786 PerfDataManager::create_counter(JAVA_CI, "totalTime", | |
787 PerfData::U_Ticks, CHECK); | |
788 } | |
789 | |
790 | |
791 if (UsePerfData) { | |
792 | |
793 EXCEPTION_MARK; | |
794 | |
795 // create the jvmstat performance counters | |
796 _perf_osr_compilation = | |
797 PerfDataManager::create_counter(SUN_CI, "osrTime", | |
798 PerfData::U_Ticks, CHECK); | |
799 | |
800 _perf_standard_compilation = | |
801 PerfDataManager::create_counter(SUN_CI, "standardTime", | |
802 PerfData::U_Ticks, CHECK); | |
803 | |
804 _perf_total_bailout_count = | |
805 PerfDataManager::create_counter(SUN_CI, "totalBailouts", | |
806 PerfData::U_Events, CHECK); | |
807 | |
808 _perf_total_invalidated_count = | |
809 PerfDataManager::create_counter(SUN_CI, "totalInvalidates", | |
810 PerfData::U_Events, CHECK); | |
811 | |
812 _perf_total_compile_count = | |
813 PerfDataManager::create_counter(SUN_CI, "totalCompiles", | |
814 PerfData::U_Events, CHECK); | |
815 _perf_total_osr_compile_count = | |
816 PerfDataManager::create_counter(SUN_CI, "osrCompiles", | |
817 PerfData::U_Events, CHECK); | |
818 | |
819 _perf_total_standard_compile_count = | |
820 PerfDataManager::create_counter(SUN_CI, "standardCompiles", | |
821 PerfData::U_Events, CHECK); | |
822 | |
823 _perf_sum_osr_bytes_compiled = | |
824 PerfDataManager::create_counter(SUN_CI, "osrBytes", | |
825 PerfData::U_Bytes, CHECK); | |
826 | |
827 _perf_sum_standard_bytes_compiled = | |
828 PerfDataManager::create_counter(SUN_CI, "standardBytes", | |
829 PerfData::U_Bytes, CHECK); | |
830 | |
831 _perf_sum_nmethod_size = | |
832 PerfDataManager::create_counter(SUN_CI, "nmethodSize", | |
833 PerfData::U_Bytes, CHECK); | |
834 | |
835 _perf_sum_nmethod_code_size = | |
836 PerfDataManager::create_counter(SUN_CI, "nmethodCodeSize", | |
837 PerfData::U_Bytes, CHECK); | |
838 | |
839 _perf_last_method = | |
840 PerfDataManager::create_string_variable(SUN_CI, "lastMethod", | |
841 CompilerCounters::cmname_buffer_length, | |
842 "", CHECK); | |
843 | |
844 _perf_last_failed_method = | |
845 PerfDataManager::create_string_variable(SUN_CI, "lastFailedMethod", | |
846 CompilerCounters::cmname_buffer_length, | |
847 "", CHECK); | |
848 | |
849 _perf_last_invalidated_method = | |
850 PerfDataManager::create_string_variable(SUN_CI, "lastInvalidatedMethod", | |
851 CompilerCounters::cmname_buffer_length, | |
852 "", CHECK); | |
853 | |
854 _perf_last_compile_type = | |
855 PerfDataManager::create_variable(SUN_CI, "lastType", | |
856 PerfData::U_None, | |
857 (jlong)CompileBroker::no_compile, | |
858 CHECK); | |
859 | |
860 _perf_last_compile_size = | |
861 PerfDataManager::create_variable(SUN_CI, "lastSize", | |
862 PerfData::U_Bytes, | |
863 (jlong)CompileBroker::no_compile, | |
864 CHECK); | |
865 | |
866 | |
867 _perf_last_failed_type = | |
868 PerfDataManager::create_variable(SUN_CI, "lastFailedType", | |
869 PerfData::U_None, | |
870 (jlong)CompileBroker::no_compile, | |
871 CHECK); | |
872 | |
873 _perf_last_invalidated_type = | |
874 PerfDataManager::create_variable(SUN_CI, "lastInvalidatedType", | |
875 PerfData::U_None, | |
876 (jlong)CompileBroker::no_compile, | |
877 CHECK); | |
878 } | |
879 | |
880 _initialized = true; | |
881 } | |
882 | |
883 | |
884 | |
885 // ------------------------------------------------------------------ | |
886 // CompileBroker::make_compiler_thread | |
887 CompilerThread* CompileBroker::make_compiler_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, TRAPS) { | |
888 CompilerThread* compiler_thread = NULL; | |
889 | |
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890 Klass* k = |
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891 SystemDictionary::resolve_or_fail(vmSymbols::java_lang_Thread(), |
0 | 892 true, CHECK_0); |
893 instanceKlassHandle klass (THREAD, k); | |
894 instanceHandle thread_oop = klass->allocate_instance_handle(CHECK_0); | |
895 Handle string = java_lang_String::create_from_str(name, CHECK_0); | |
896 | |
897 // Initialize thread_oop to put it into the system threadGroup | |
898 Handle thread_group (THREAD, Universe::system_thread_group()); | |
899 JavaValue result(T_VOID); | |
900 JavaCalls::call_special(&result, thread_oop, | |
901 klass, | |
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902 vmSymbols::object_initializer_name(), |
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903 vmSymbols::threadgroup_string_void_signature(), |
0 | 904 thread_group, |
905 string, | |
906 CHECK_0); | |
907 | |
908 { | |
909 MutexLocker mu(Threads_lock, THREAD); | |
910 compiler_thread = new CompilerThread(queue, counters); | |
911 // At this point the new CompilerThread data-races with this startup | |
912 // thread (which I believe is the primoridal thread and NOT the VM | |
913 // thread). This means Java bytecodes being executed at startup can | |
914 // queue compile jobs which will run at whatever default priority the | |
915 // newly created CompilerThread runs at. | |
916 | |
917 | |
918 // At this point it may be possible that no osthread was created for the | |
919 // JavaThread due to lack of memory. We would have to throw an exception | |
920 // in that case. However, since this must work and we do not allow | |
921 // exceptions anyway, check and abort if this fails. | |
922 | |
923 if (compiler_thread == NULL || compiler_thread->osthread() == NULL){ | |
924 vm_exit_during_initialization("java.lang.OutOfMemoryError", | |
925 "unable to create new native thread"); | |
926 } | |
927 | |
928 java_lang_Thread::set_thread(thread_oop(), compiler_thread); | |
929 | |
930 // Note that this only sets the JavaThread _priority field, which by | |
931 // definition is limited to Java priorities and not OS priorities. | |
932 // The os-priority is set in the CompilerThread startup code itself | |
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933 |
0 | 934 java_lang_Thread::set_priority(thread_oop(), NearMaxPriority); |
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935 |
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936 // Note that we cannot call os::set_priority because it expects Java |
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937 // priorities and we are *explicitly* using OS priorities so that it's |
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938 // possible to set the compiler thread priority higher than any Java |
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939 // thread. |
0 | 940 |
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941 int native_prio = CompilerThreadPriority; |
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942 if (native_prio == -1) { |
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943 if (UseCriticalCompilerThreadPriority) { |
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944 native_prio = os::java_to_os_priority[CriticalPriority]; |
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945 } else { |
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946 native_prio = os::java_to_os_priority[NearMaxPriority]; |
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947 } |
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948 } |
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949 os::set_native_priority(compiler_thread, native_prio); |
0 | 950 |
951 java_lang_Thread::set_daemon(thread_oop()); | |
952 | |
953 compiler_thread->set_threadObj(thread_oop()); | |
954 Threads::add(compiler_thread); | |
955 Thread::start(compiler_thread); | |
956 } | |
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957 |
0 | 958 // Let go of Threads_lock before yielding |
959 os::yield(); // make sure that the compiler thread is started early (especially helpful on SOLARIS) | |
960 | |
961 return compiler_thread; | |
962 } | |
963 | |
964 | |
965 // ------------------------------------------------------------------ | |
966 // CompileBroker::init_compiler_threads | |
967 // | |
968 // Initialize the compilation queue | |
1783 | 969 void CompileBroker::init_compiler_threads(int c1_compiler_count, int c2_compiler_count) { |
0 | 970 EXCEPTION_MARK; |
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971 #if !defined(ZERO) && !defined(SHARK) && !defined(GRAAL) |
1783 | 972 assert(c2_compiler_count > 0 || c1_compiler_count > 0, "No compilers?"); |
2447 | 973 #endif // !ZERO && !SHARK |
1783 | 974 if (c2_compiler_count > 0) { |
975 _c2_method_queue = new CompileQueue("C2MethodQueue", MethodCompileQueue_lock); | |
976 } | |
977 if (c1_compiler_count > 0) { | |
978 _c1_method_queue = new CompileQueue("C1MethodQueue", MethodCompileQueue_lock); | |
979 } | |
0 | 980 |
1783 | 981 int compiler_count = c1_compiler_count + c2_compiler_count; |
982 | |
0 | 983 _method_threads = |
6197 | 984 new (ResourceObj::C_HEAP, mtCompiler) GrowableArray<CompilerThread*>(compiler_count, true); |
0 | 985 |
986 char name_buffer[256]; | |
1783 | 987 for (int i = 0; i < c2_compiler_count; i++) { |
0 | 988 // Create a name for our thread. |
1783 | 989 sprintf(name_buffer, "C2 CompilerThread%d", i); |
0 | 990 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK); |
1783 | 991 CompilerThread* new_thread = make_compiler_thread(name_buffer, _c2_method_queue, counters, CHECK); |
0 | 992 _method_threads->append(new_thread); |
993 } | |
1783 | 994 |
995 for (int i = c2_compiler_count; i < compiler_count; i++) { | |
996 // Create a name for our thread. | |
997 sprintf(name_buffer, "C1 CompilerThread%d", i); | |
998 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK); | |
999 CompilerThread* new_thread = make_compiler_thread(name_buffer, _c1_method_queue, counters, CHECK); | |
1000 _method_threads->append(new_thread); | |
1001 } | |
1002 | |
0 | 1003 if (UsePerfData) { |
1004 PerfDataManager::create_constant(SUN_CI, "threads", PerfData::U_Bytes, | |
1005 compiler_count, CHECK); | |
1006 } | |
1007 } | |
1008 | |
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1009 |
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1010 // Set the methods on the stack as on_stack so that redefine classes doesn't |
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1011 // reclaim them |
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1012 void CompileBroker::mark_on_stack() { |
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1013 if (_c2_method_queue != NULL) { |
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1014 _c2_method_queue->mark_on_stack(); |
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1015 } |
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1016 if (_c1_method_queue != NULL) { |
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1017 _c1_method_queue->mark_on_stack(); |
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1018 } |
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1019 } |
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1020 |
0 | 1021 // ------------------------------------------------------------------ |
1022 // CompileBroker::is_idle | |
1023 bool CompileBroker::is_idle() { | |
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1024 #ifndef GRAAL |
1783 | 1025 if (_c2_method_queue != NULL && !_c2_method_queue->is_empty()) { |
1026 return false; | |
1027 } else if (_c1_method_queue != NULL && !_c1_method_queue->is_empty()) { | |
0 | 1028 return false; |
1029 } else { | |
1030 int num_threads = _method_threads->length(); | |
1031 for (int i=0; i<num_threads; i++) { | |
1032 if (_method_threads->at(i)->task() != NULL) { | |
1033 return false; | |
1034 } | |
1035 } | |
1036 } | |
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1037 #endif |
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1038 // No pending or active compilations. |
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1039 return true; |
0 | 1040 } |
1041 | |
1042 | |
1043 // ------------------------------------------------------------------ | |
1044 // CompileBroker::compile_method | |
1045 // | |
1046 // Request compilation of a method. | |
1047 void CompileBroker::compile_method_base(methodHandle method, | |
1048 int osr_bci, | |
1049 int comp_level, | |
1050 methodHandle hot_method, | |
1051 int hot_count, | |
1052 const char* comment, | |
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1053 Thread* thread) { |
0 | 1054 // do nothing if compiler thread(s) is not available |
1055 if (!_initialized ) { | |
1056 return; | |
1057 } | |
1058 | |
1059 guarantee(!method->is_abstract(), "cannot compile abstract methods"); | |
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1060 assert(method->method_holder()->oop_is_instance(), |
0 | 1061 "sanity check"); |
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1062 assert(!method->method_holder()->is_not_initialized(), |
0 | 1063 "method holder must be initialized"); |
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1064 assert(!method->is_method_handle_intrinsic(), "do not enqueue these guys"); |
0 | 1065 |
1066 if (CIPrintRequests) { | |
1067 tty->print("request: "); | |
1068 method->print_short_name(tty); | |
1069 if (osr_bci != InvocationEntryBci) { | |
1070 tty->print(" osr_bci: %d", osr_bci); | |
1071 } | |
1072 tty->print(" comment: %s count: %d", comment, hot_count); | |
1073 if (!hot_method.is_null()) { | |
1074 tty->print(" hot: "); | |
1075 if (hot_method() != method()) { | |
1076 hot_method->print_short_name(tty); | |
1077 } else { | |
1078 tty->print("yes"); | |
1079 } | |
1080 } | |
1081 tty->cr(); | |
1082 } | |
1083 | |
1084 // A request has been made for compilation. Before we do any | |
1085 // real work, check to see if the method has been compiled | |
1086 // in the meantime with a definitive result. | |
1087 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
1088 return; | |
1089 } | |
1090 | |
2403 | 1091 #ifndef PRODUCT |
1092 if (osr_bci != -1 && !FLAG_IS_DEFAULT(OSROnlyBCI)) { | |
1093 if ((OSROnlyBCI > 0) ? (OSROnlyBCI != osr_bci) : (-OSROnlyBCI == osr_bci)) { | |
1094 // Positive OSROnlyBCI means only compile that bci. Negative means don't compile that BCI. | |
1095 return; | |
1096 } | |
1097 } | |
1098 #endif | |
1783 | 1099 |
0 | 1100 // If this method is already in the compile queue, then |
1101 // we do not block the current thread. | |
1102 if (compilation_is_in_queue(method, osr_bci)) { | |
1103 // We may want to decay our counter a bit here to prevent | |
1104 // multiple denied requests for compilation. This is an | |
1105 // open compilation policy issue. Note: The other possibility, | |
1106 // in the case that this is a blocking compile request, is to have | |
1107 // all subsequent blocking requesters wait for completion of | |
1108 // ongoing compiles. Note that in this case we'll need a protocol | |
1109 // for freeing the associated compile tasks. [Or we could have | |
1110 // a single static monitor on which all these waiters sleep.] | |
1111 return; | |
1112 } | |
1113 | |
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1114 // If the requesting thread is holding the pending list lock |
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1115 // then we just return. We can't risk blocking while holding |
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1116 // the pending list lock or a 3-way deadlock may occur |
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1117 // between the reference handler thread, a GC (instigated |
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1118 // by a compiler thread), and compiled method registration. |
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1119 if (InstanceRefKlass::owns_pending_list_lock(JavaThread::current())) { |
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1120 return; |
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1121 } |
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1122 #ifdef GRAAL |
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1123 if (!JavaThread::current()->is_compiling()) { |
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1124 method->set_queued_for_compilation(); |
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1125 GraalCompiler::instance()->compile_method(method, osr_bci, is_compile_blocking(method, osr_bci)); |
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1126 } else { |
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1127 // Recursive compile request => ignore. |
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1128 } |
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1129 #else |
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1130 |
0 | 1131 // Outputs from the following MutexLocker block: |
1132 CompileTask* task = NULL; | |
1133 bool blocking = false; | |
1783 | 1134 CompileQueue* queue = compile_queue(comp_level); |
0 | 1135 |
1136 // Acquire our lock. | |
1137 { | |
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1138 MutexLocker locker(queue->lock(), thread); |
0 | 1139 |
1140 // Make sure the method has not slipped into the queues since | |
1141 // last we checked; note that those checks were "fast bail-outs". | |
1142 // Here we need to be more careful, see 14012000 below. | |
1143 if (compilation_is_in_queue(method, osr_bci)) { | |
1144 return; | |
1145 } | |
1146 | |
1147 // We need to check again to see if the compilation has | |
1148 // completed. A previous compilation may have registered | |
1149 // some result. | |
1150 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
1151 return; | |
1152 } | |
1153 | |
1154 // We now know that this compilation is not pending, complete, | |
1155 // or prohibited. Assign a compile_id to this compilation | |
1156 // and check to see if it is in our [Start..Stop) range. | |
1157 uint compile_id = assign_compile_id(method, osr_bci); | |
1158 if (compile_id == 0) { | |
1159 // The compilation falls outside the allowed range. | |
1160 return; | |
1161 } | |
1162 | |
1163 // Should this thread wait for completion of the compile? | |
1164 blocking = is_compile_blocking(method, osr_bci); | |
1165 | |
1166 // We will enter the compilation in the queue. | |
1167 // 14012000: Note that this sets the queued_for_compile bits in | |
1168 // the target method. We can now reason that a method cannot be | |
1169 // queued for compilation more than once, as follows: | |
1170 // Before a thread queues a task for compilation, it first acquires | |
1171 // the compile queue lock, then checks if the method's queued bits | |
1172 // are set or it has already been compiled. Thus there can not be two | |
1173 // instances of a compilation task for the same method on the | |
1174 // compilation queue. Consider now the case where the compilation | |
1175 // thread has already removed a task for that method from the queue | |
1176 // and is in the midst of compiling it. In this case, the | |
1177 // queued_for_compile bits must be set in the method (and these | |
1178 // will be visible to the current thread, since the bits were set | |
1179 // under protection of the compile queue lock, which we hold now. | |
1180 // When the compilation completes, the compiler thread first sets | |
1181 // the compilation result and then clears the queued_for_compile | |
1182 // bits. Neither of these actions are protected by a barrier (or done | |
1183 // under the protection of a lock), so the only guarantee we have | |
1184 // (on machines with TSO (Total Store Order)) is that these values | |
1185 // will update in that order. As a result, the only combinations of | |
1186 // these bits that the current thread will see are, in temporal order: | |
1187 // <RESULT, QUEUE> : | |
1188 // <0, 1> : in compile queue, but not yet compiled | |
1189 // <1, 1> : compiled but queue bit not cleared | |
1190 // <1, 0> : compiled and queue bit cleared | |
1191 // Because we first check the queue bits then check the result bits, | |
1192 // we are assured that we cannot introduce a duplicate task. | |
1193 // Note that if we did the tests in the reverse order (i.e. check | |
1194 // result then check queued bit), we could get the result bit before | |
1195 // the compilation completed, and the queue bit after the compilation | |
1196 // completed, and end up introducing a "duplicate" (redundant) task. | |
1197 // In that case, the compiler thread should first check if a method | |
1198 // has already been compiled before trying to compile it. | |
1199 // NOTE: in the event that there are multiple compiler threads and | |
1200 // there is de-optimization/recompilation, things will get hairy, | |
1201 // and in that case it's best to protect both the testing (here) of | |
1202 // these bits, and their updating (here and elsewhere) under a | |
1203 // common lock. | |
1783 | 1204 task = create_compile_task(queue, |
0 | 1205 compile_id, method, |
1206 osr_bci, comp_level, | |
1207 hot_method, hot_count, comment, | |
1208 blocking); | |
1209 } | |
1210 | |
1211 if (blocking) { | |
1212 wait_for_completion(task); | |
1213 } | |
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1214 #endif |
0 | 1215 } |
1216 | |
1217 | |
1218 nmethod* CompileBroker::compile_method(methodHandle method, int osr_bci, | |
1783 | 1219 int comp_level, |
0 | 1220 methodHandle hot_method, int hot_count, |
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1221 const char* comment, Thread* THREAD) { |
0 | 1222 // make sure arguments make sense |
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1223 assert(method->method_holder()->oop_is_instance(), "not an instance method"); |
0 | 1224 assert(osr_bci == InvocationEntryBci || (0 <= osr_bci && osr_bci < method->code_size()), "bci out of range"); |
1225 assert(!method->is_abstract() && (osr_bci == InvocationEntryBci || !method->is_native()), "cannot compile abstract/native methods"); | |
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1226 assert(!method->method_holder()->is_not_initialized(), "method holder must be initialized"); |
0 | 1227 |
1783 | 1228 if (!TieredCompilation) { |
1229 comp_level = CompLevel_highest_tier; | |
0 | 1230 } |
1231 | |
1232 // return quickly if possible | |
1233 | |
1234 // lock, make sure that the compilation | |
1235 // isn't prohibited in a straightforward way. | |
1236 | |
1237 if (compiler(comp_level) == NULL || compilation_is_prohibited(method, osr_bci, comp_level)) { | |
1238 return NULL; | |
1239 } | |
1240 | |
1241 if (osr_bci == InvocationEntryBci) { | |
1242 // standard compilation | |
1243 nmethod* method_code = method->code(); | |
1783 | 1244 if (method_code != NULL) { |
1245 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
1246 return method_code; | |
1247 } | |
0 | 1248 } |
1249 if (method->is_not_compilable(comp_level)) return NULL; | |
1202 | 1250 |
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1251 if (UseCodeCacheFlushing) { |
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1252 nmethod* saved = CodeCache::find_and_remove_saved_code(method()); |
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1253 if (saved != NULL) { |
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1254 method->set_code(method, saved); |
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1255 return saved; |
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1256 } |
1202 | 1257 } |
1258 | |
0 | 1259 } else { |
1260 // osr compilation | |
1261 #ifndef TIERED | |
1262 // seems like an assert of dubious value | |
1783 | 1263 assert(comp_level == CompLevel_highest_tier, |
0 | 1264 "all OSR compiles are assumed to be at a single compilation lavel"); |
1265 #endif // TIERED | |
1783 | 1266 // We accept a higher level osr method |
1267 nmethod* nm = method->lookup_osr_nmethod_for(osr_bci, comp_level, false); | |
0 | 1268 if (nm != NULL) return nm; |
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1269 if (method->is_not_osr_compilable(comp_level)) return NULL; |
0 | 1270 } |
1271 | |
1272 assert(!HAS_PENDING_EXCEPTION, "No exception should be present"); | |
1273 // some prerequisites that are compiler specific | |
2447 | 1274 if (compiler(comp_level)->is_c2() || compiler(comp_level)->is_shark()) { |
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1275 method->constants()->resolve_string_constants(CHECK_AND_CLEAR_NULL); |
0 | 1276 // Resolve all classes seen in the signature of the method |
1277 // we are compiling. | |
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1278 Method::load_signature_classes(method, CHECK_AND_CLEAR_NULL); |
0 | 1279 } |
1280 | |
1281 // If the method is native, do the lookup in the thread requesting | |
1282 // the compilation. Native lookups can load code, which is not | |
1283 // permitted during compilation. | |
1284 // | |
1285 // Note: A native method implies non-osr compilation which is | |
1286 // checked with an assertion at the entry of this method. | |
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1287 if (method->is_native() && !method->is_method_handle_intrinsic()) { |
0 | 1288 bool in_base_library; |
1289 address adr = NativeLookup::lookup(method, in_base_library, THREAD); | |
1290 if (HAS_PENDING_EXCEPTION) { | |
1291 // In case of an exception looking up the method, we just forget | |
1292 // about it. The interpreter will kick-in and throw the exception. | |
1293 method->set_not_compilable(); // implies is_not_osr_compilable() | |
1294 CLEAR_PENDING_EXCEPTION; | |
1295 return NULL; | |
1296 } | |
1297 assert(method->has_native_function(), "must have native code by now"); | |
1298 } | |
1299 | |
1300 // RedefineClasses() has replaced this method; just return | |
1301 if (method->is_old()) { | |
1302 return NULL; | |
1303 } | |
1304 | |
1305 // JVMTI -- post_compile_event requires jmethod_id() that may require | |
1306 // a lock the compiling thread can not acquire. Prefetch it here. | |
1307 if (JvmtiExport::should_post_compiled_method_load()) { | |
1308 method->jmethod_id(); | |
1309 } | |
1310 | |
1202 | 1311 // If the compiler is shut off due to code cache flushing or otherwise, |
1312 // fail out now so blocking compiles dont hang the java thread | |
1313 if (!should_compile_new_jobs() || (UseCodeCacheFlushing && CodeCache::needs_flushing())) { | |
1783 | 1314 CompilationPolicy::policy()->delay_compilation(method()); |
1202 | 1315 return NULL; |
1316 } | |
1317 | |
0 | 1318 // do the compilation |
1319 if (method->is_native()) { | |
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1320 if (!PreferInterpreterNativeStubs || method->is_method_handle_intrinsic()) { |
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1321 // Acquire our lock. |
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1322 int compile_id; |
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1323 { |
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1324 MutexLocker locker(MethodCompileQueue_lock, THREAD); |
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1325 compile_id = assign_compile_id(method, standard_entry_bci); |
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1326 } |
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1327 (void) AdapterHandlerLibrary::create_native_wrapper(method, compile_id); |
0 | 1328 } else { |
1329 return NULL; | |
1330 } | |
1331 } else { | |
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1332 compile_method_base(method, osr_bci, comp_level, hot_method, hot_count, comment, THREAD); |
0 | 1333 } |
1334 | |
1335 // return requested nmethod | |
1783 | 1336 // We accept a higher level osr method |
1337 return osr_bci == InvocationEntryBci ? method->code() : method->lookup_osr_nmethod_for(osr_bci, comp_level, false); | |
0 | 1338 } |
1339 | |
1340 | |
1341 // ------------------------------------------------------------------ | |
1342 // CompileBroker::compilation_is_complete | |
1343 // | |
1344 // See if compilation of this method is already complete. | |
1345 bool CompileBroker::compilation_is_complete(methodHandle method, | |
1346 int osr_bci, | |
1347 int comp_level) { | |
1348 bool is_osr = (osr_bci != standard_entry_bci); | |
1349 if (is_osr) { | |
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1350 if (method->is_not_osr_compilable(comp_level)) { |
0 | 1351 return true; |
1352 } else { | |
1783 | 1353 nmethod* result = method->lookup_osr_nmethod_for(osr_bci, comp_level, true); |
0 | 1354 return (result != NULL); |
1355 } | |
1356 } else { | |
1357 if (method->is_not_compilable(comp_level)) { | |
1358 return true; | |
1359 } else { | |
1360 nmethod* result = method->code(); | |
1361 if (result == NULL) return false; | |
1783 | 1362 return comp_level == result->comp_level(); |
0 | 1363 } |
1364 } | |
1365 } | |
1366 | |
1367 | |
1368 // ------------------------------------------------------------------ | |
1369 // CompileBroker::compilation_is_in_queue | |
1370 // | |
1371 // See if this compilation is already requested. | |
1372 // | |
1373 // Implementation note: there is only a single "is in queue" bit | |
1374 // for each method. This means that the check below is overly | |
1375 // conservative in the sense that an osr compilation in the queue | |
1376 // will block a normal compilation from entering the queue (and vice | |
1377 // versa). This can be remedied by a full queue search to disambiguate | |
1378 // cases. If it is deemed profitible, this may be done. | |
1379 bool CompileBroker::compilation_is_in_queue(methodHandle method, | |
1783 | 1380 int osr_bci) { |
0 | 1381 return method->queued_for_compilation(); |
1382 } | |
1383 | |
1384 // ------------------------------------------------------------------ | |
1385 // CompileBroker::compilation_is_prohibited | |
1386 // | |
1387 // See if this compilation is not allowed. | |
1388 bool CompileBroker::compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level) { | |
1389 bool is_native = method->is_native(); | |
1390 // Some compilers may not support the compilation of natives. | |
1391 if (is_native && | |
1392 (!CICompileNatives || !compiler(comp_level)->supports_native())) { | |
1783 | 1393 method->set_not_compilable_quietly(comp_level); |
0 | 1394 return true; |
1395 } | |
1396 | |
1397 bool is_osr = (osr_bci != standard_entry_bci); | |
1398 // Some compilers may not support on stack replacement. | |
1399 if (is_osr && | |
1400 (!CICompileOSR || !compiler(comp_level)->supports_osr())) { | |
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1401 method->set_not_osr_compilable(comp_level); |
0 | 1402 return true; |
1403 } | |
1404 | |
1405 // The method may be explicitly excluded by the user. | |
1406 bool quietly; | |
1407 if (CompilerOracle::should_exclude(method, quietly)) { | |
1408 if (!quietly) { | |
1409 // This does not happen quietly... | |
1410 ResourceMark rm; | |
1411 tty->print("### Excluding %s:%s", | |
1412 method->is_native() ? "generation of native wrapper" : "compile", | |
1413 (method->is_static() ? " static" : "")); | |
1414 method->print_short_name(tty); | |
1415 tty->cr(); | |
1416 } | |
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1417 method->set_not_compilable_quietly(); |
0 | 1418 } |
1419 | |
1420 return false; | |
1421 } | |
1422 | |
1423 | |
1424 // ------------------------------------------------------------------ | |
1425 // CompileBroker::assign_compile_id | |
1426 // | |
1427 // Assign a serialized id number to this compilation request. If the | |
1428 // number falls out of the allowed range, return a 0. OSR | |
1429 // compilations may be numbered separately from regular compilations | |
1430 // if certain debugging flags are used. | |
1431 uint CompileBroker::assign_compile_id(methodHandle method, int osr_bci) { | |
1783 | 1432 assert(MethodCompileQueue_lock->owner() == Thread::current(), |
0 | 1433 "must hold the compilation queue lock"); |
1434 bool is_osr = (osr_bci != standard_entry_bci); | |
1435 uint id; | |
1436 if (CICountOSR && is_osr) { | |
1437 id = ++_osr_compilation_id; | |
1438 if ((uint)CIStartOSR <= id && id < (uint)CIStopOSR) { | |
1439 return id; | |
1440 } | |
1441 } else { | |
1442 id = ++_compilation_id; | |
1443 if ((uint)CIStart <= id && id < (uint)CIStop) { | |
1444 return id; | |
1445 } | |
1446 } | |
1447 | |
1448 // Method was not in the appropriate compilation range. | |
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1449 method->set_not_compilable_quietly(); |
0 | 1450 return 0; |
1451 } | |
1452 | |
1453 | |
1454 // ------------------------------------------------------------------ | |
1455 // CompileBroker::is_compile_blocking | |
1456 // | |
1457 // Should the current thread be blocked until this compilation request | |
1458 // has been fulfilled? | |
1459 bool CompileBroker::is_compile_blocking(methodHandle method, int osr_bci) { | |
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1460 assert(!InstanceRefKlass::owns_pending_list_lock(JavaThread::current()), "possible deadlock"); |
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1461 return !BackgroundCompilation; |
0 | 1462 } |
1463 | |
1464 | |
1465 // ------------------------------------------------------------------ | |
1466 // CompileBroker::preload_classes | |
1467 void CompileBroker::preload_classes(methodHandle method, TRAPS) { | |
1468 // Move this code over from c1_Compiler.cpp | |
1469 ShouldNotReachHere(); | |
1470 } | |
1471 | |
1472 | |
1473 // ------------------------------------------------------------------ | |
1474 // CompileBroker::create_compile_task | |
1475 // | |
1476 // Create a CompileTask object representing the current request for | |
1477 // compilation. Add this task to the queue. | |
1478 CompileTask* CompileBroker::create_compile_task(CompileQueue* queue, | |
1479 int compile_id, | |
1480 methodHandle method, | |
1481 int osr_bci, | |
1482 int comp_level, | |
1483 methodHandle hot_method, | |
1484 int hot_count, | |
1485 const char* comment, | |
1486 bool blocking) { | |
1487 CompileTask* new_task = allocate_task(); | |
1488 new_task->initialize(compile_id, method, osr_bci, comp_level, | |
1489 hot_method, hot_count, comment, | |
1490 blocking); | |
1491 queue->add(new_task); | |
1492 return new_task; | |
1493 } | |
1494 | |
1495 | |
1496 // ------------------------------------------------------------------ | |
1497 // CompileBroker::allocate_task | |
1498 // | |
1499 // Allocate a CompileTask, from the free list if possible. | |
1500 CompileTask* CompileBroker::allocate_task() { | |
1501 MutexLocker locker(CompileTaskAlloc_lock); | |
1502 CompileTask* task = NULL; | |
1503 if (_task_free_list != NULL) { | |
1504 task = _task_free_list; | |
1505 _task_free_list = task->next(); | |
1506 task->set_next(NULL); | |
1507 } else { | |
1508 task = new CompileTask(); | |
1509 task->set_next(NULL); | |
1510 } | |
1511 return task; | |
1512 } | |
1513 | |
1514 | |
1515 // ------------------------------------------------------------------ | |
1516 // CompileBroker::free_task | |
1517 // | |
1518 // Add a task to the free list. | |
1519 void CompileBroker::free_task(CompileTask* task) { | |
1520 MutexLocker locker(CompileTaskAlloc_lock); | |
1521 task->free(); | |
1522 task->set_next(_task_free_list); | |
1523 _task_free_list = task; | |
1524 } | |
1525 | |
1526 | |
1527 // ------------------------------------------------------------------ | |
1528 // CompileBroker::wait_for_completion | |
1529 // | |
1530 // Wait for the given method CompileTask to complete. | |
1531 void CompileBroker::wait_for_completion(CompileTask* task) { | |
1532 if (CIPrintCompileQueue) { | |
1533 tty->print_cr("BLOCKING FOR COMPILE"); | |
1534 } | |
1535 | |
1536 assert(task->is_blocking(), "can only wait on blocking task"); | |
1537 | |
1538 JavaThread *thread = JavaThread::current(); | |
1539 thread->set_blocked_on_compilation(true); | |
1540 | |
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1541 methodHandle method(thread, task->method()); |
0 | 1542 { |
1543 MutexLocker waiter(task->lock(), thread); | |
1544 | |
1545 while (!task->is_complete()) | |
1546 task->lock()->wait(); | |
1547 } | |
1548 // It is harmless to check this status without the lock, because | |
1549 // completion is a stable property (until the task object is recycled). | |
1550 assert(task->is_complete(), "Compilation should have completed"); | |
1551 assert(task->code_handle() == NULL, "must be reset"); | |
1552 | |
1553 thread->set_blocked_on_compilation(false); | |
1554 | |
1555 // By convention, the waiter is responsible for recycling a | |
1556 // blocking CompileTask. Since there is only one waiter ever | |
1557 // waiting on a CompileTask, we know that no one else will | |
1558 // be using this CompileTask; we can free it. | |
1559 free_task(task); | |
1560 } | |
1561 | |
1562 // ------------------------------------------------------------------ | |
1563 // CompileBroker::compiler_thread_loop | |
1564 // | |
1565 // The main loop run by a CompilerThread. | |
1566 void CompileBroker::compiler_thread_loop() { | |
1567 CompilerThread* thread = CompilerThread::current(); | |
1568 CompileQueue* queue = thread->queue(); | |
1569 | |
1570 // For the thread that initializes the ciObjectFactory | |
1571 // this resource mark holds all the shared objects | |
1572 ResourceMark rm; | |
1573 | |
1574 // First thread to get here will initialize the compiler interface | |
1575 | |
1576 if (!ciObjectFactory::is_initialized()) { | |
1577 ASSERT_IN_VM; | |
1578 MutexLocker only_one (CompileThread_lock, thread); | |
1579 if (!ciObjectFactory::is_initialized()) { | |
1580 ciObjectFactory::initialize(); | |
1581 } | |
1582 } | |
1583 | |
1584 // Open a log. | |
1585 if (LogCompilation) { | |
1586 init_compiler_thread_log(); | |
1587 } | |
1588 CompileLog* log = thread->log(); | |
1589 if (log != NULL) { | |
6843 | 1590 log->begin_elem("start_compile_thread name='%s' thread='" UINTX_FORMAT "' process='%d'", |
1591 thread->name(), | |
0 | 1592 os::current_thread_id(), |
1593 os::current_process_id()); | |
1594 log->stamp(); | |
1595 log->end_elem(); | |
1596 } | |
1597 | |
1598 while (true) { | |
1599 { | |
1600 // We need this HandleMark to avoid leaking VM handles. | |
1601 HandleMark hm(thread); | |
1202 | 1602 |
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1603 if (CodeCache::largest_free_block() < CodeCacheMinimumFreeSpace) { |
1202 | 1604 // the code cache is really full |
1605 handle_full_code_cache(); | |
1606 } else if (UseCodeCacheFlushing && CodeCache::needs_flushing()) { | |
1607 // Attempt to start cleaning the code cache while there is still a little headroom | |
1608 NMethodSweeper::handle_full_code_cache(false); | |
0 | 1609 } |
1610 | |
1611 CompileTask* task = queue->get(); | |
1612 | |
1613 // Give compiler threads an extra quanta. They tend to be bursty and | |
1614 // this helps the compiler to finish up the job. | |
1615 if( CompilerThreadHintNoPreempt ) | |
1616 os::hint_no_preempt(); | |
1617 | |
1618 // trace per thread time and compile statistics | |
1619 CompilerCounters* counters = ((CompilerThread*)thread)->counters(); | |
1620 PerfTraceTimedEvent(counters->time_counter(), counters->compile_counter()); | |
1621 | |
1622 // Assign the task to the current thread. Mark this compilation | |
1623 // thread as active for the profiler. | |
1624 CompileTaskWrapper ctw(task); | |
1625 nmethodLocker result_handle; // (handle for the nmethod produced by this task) | |
1626 task->set_code_handle(&result_handle); | |
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1627 methodHandle method(thread, task->method()); |
0 | 1628 |
1629 // Never compile a method if breakpoints are present in it | |
1630 if (method()->number_of_breakpoints() == 0) { | |
1631 // Compile the method. | |
1202 | 1632 if ((UseCompiler || AlwaysCompileLoopMethods) && CompileBroker::should_compile_new_jobs()) { |
0 | 1633 #ifdef COMPILER1 |
1634 // Allow repeating compilations for the purpose of benchmarking | |
1635 // compile speed. This is not useful for customers. | |
1636 if (CompilationRepeat != 0) { | |
1637 int compile_count = CompilationRepeat; | |
1638 while (compile_count > 0) { | |
1639 invoke_compiler_on_method(task); | |
1640 nmethod* nm = method->code(); | |
1641 if (nm != NULL) { | |
1642 nm->make_zombie(); | |
1643 method->clear_code(); | |
1644 } | |
1645 compile_count--; | |
1646 } | |
1647 } | |
1648 #endif /* COMPILER1 */ | |
1649 invoke_compiler_on_method(task); | |
1650 } else { | |
1651 // After compilation is disabled, remove remaining methods from queue | |
1652 method->clear_queued_for_compilation(); | |
1653 } | |
1654 } | |
1655 } | |
1656 } | |
1657 } | |
1658 | |
1659 | |
1660 // ------------------------------------------------------------------ | |
1661 // CompileBroker::init_compiler_thread_log | |
1662 // | |
1663 // Set up state required by +LogCompilation. | |
1664 void CompileBroker::init_compiler_thread_log() { | |
1665 CompilerThread* thread = CompilerThread::current(); | |
1666 char fileBuf[4*K]; | |
1667 FILE* fp = NULL; | |
1668 char* file = NULL; | |
1669 intx thread_id = os::current_thread_id(); | |
1670 for (int try_temp_dir = 1; try_temp_dir >= 0; try_temp_dir--) { | |
1671 const char* dir = (try_temp_dir ? os::get_temp_directory() : NULL); | |
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1672 if (dir == NULL) { |
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1673 jio_snprintf(fileBuf, sizeof(fileBuf), "hs_c" UINTX_FORMAT "_pid%u.log", |
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1674 thread_id, os::current_process_id()); |
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1675 } else { |
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1676 jio_snprintf(fileBuf, sizeof(fileBuf), |
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1677 "%s%shs_c" UINTX_FORMAT "_pid%u.log", dir, |
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1678 os::file_separator(), thread_id, os::current_process_id()); |
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1679 } |
0 | 1680 fp = fopen(fileBuf, "at"); |
1681 if (fp != NULL) { | |
6197 | 1682 file = NEW_C_HEAP_ARRAY(char, strlen(fileBuf)+1, mtCompiler); |
0 | 1683 strcpy(file, fileBuf); |
1684 break; | |
1685 } | |
1686 } | |
1687 if (fp == NULL) { | |
1688 warning("Cannot open log file: %s", fileBuf); | |
1689 } else { | |
1690 if (LogCompilation && Verbose) | |
1691 tty->print_cr("Opening compilation log %s", file); | |
6197 | 1692 CompileLog* log = new(ResourceObj::C_HEAP, mtCompiler) CompileLog(file, fp, thread_id); |
0 | 1693 thread->init_log(log); |
1694 | |
1695 if (xtty != NULL) { | |
1696 ttyLocker ttyl; | |
1697 | |
1698 // Record any per thread log files | |
1699 xtty->elem("thread_logfile thread='%d' filename='%s'", thread_id, file); | |
1700 } | |
1701 } | |
1702 } | |
1703 | |
1704 // ------------------------------------------------------------------ | |
1705 // CompileBroker::set_should_block | |
1706 // | |
1707 // Set _should_block. | |
1708 // Call this from the VM, with Threads_lock held and a safepoint requested. | |
1709 void CompileBroker::set_should_block() { | |
1710 assert(Threads_lock->owner() == Thread::current(), "must have threads lock"); | |
1711 assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint already"); | |
1712 #ifndef PRODUCT | |
1713 if (PrintCompilation && (Verbose || WizardMode)) | |
1714 tty->print_cr("notifying compiler thread pool to block"); | |
1715 #endif | |
1716 _should_block = true; | |
1717 } | |
1718 | |
1719 // ------------------------------------------------------------------ | |
1720 // CompileBroker::maybe_block | |
1721 // | |
1722 // Call this from the compiler at convenient points, to poll for _should_block. | |
1723 void CompileBroker::maybe_block() { | |
1724 if (_should_block) { | |
1725 #ifndef PRODUCT | |
1726 if (PrintCompilation && (Verbose || WizardMode)) | |
1727 tty->print_cr("compiler thread " INTPTR_FORMAT " poll detects block request", Thread::current()); | |
1728 #endif | |
1729 ThreadInVMfromNative tivfn(JavaThread::current()); | |
1730 } | |
1731 } | |
1732 | |
1733 // ------------------------------------------------------------------ | |
1734 // CompileBroker::invoke_compiler_on_method | |
1735 // | |
1736 // Compile a method. | |
1737 // | |
1738 void CompileBroker::invoke_compiler_on_method(CompileTask* task) { | |
1739 if (PrintCompilation) { | |
1740 ResourceMark rm; | |
1741 task->print_line(); | |
1742 } | |
1743 elapsedTimer time; | |
1744 | |
1745 CompilerThread* thread = CompilerThread::current(); | |
1746 ResourceMark rm(thread); | |
1747 | |
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1748 if (LogEvents) { |
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1749 _compilation_log->log_compile(thread, task); |
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1750 } |
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1751 |
0 | 1752 // Common flags. |
1753 uint compile_id = task->compile_id(); | |
1754 int osr_bci = task->osr_bci(); | |
1755 bool is_osr = (osr_bci != standard_entry_bci); | |
1756 bool should_log = (thread->log() != NULL); | |
1757 bool should_break = false; | |
1758 { | |
1759 // create the handle inside it's own block so it can't | |
1760 // accidentally be referenced once the thread transitions to | |
1761 // native. The NoHandleMark before the transition should catch | |
1762 // any cases where this occurs in the future. | |
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1763 methodHandle method(thread, task->method()); |
0 | 1764 should_break = check_break_at(method, compile_id, is_osr); |
1765 if (should_log && !CompilerOracle::should_log(method)) { | |
1766 should_log = false; | |
1767 } | |
1768 assert(!method->is_native(), "no longer compile natives"); | |
1769 | |
1770 // Save information about this method in case of failure. | |
1771 set_last_compile(thread, method, is_osr, task->comp_level()); | |
1772 | |
1773 DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler(task->comp_level()), method); | |
1774 } | |
1775 | |
1776 // Allocate a new set of JNI handles. | |
1777 push_jni_handle_block(); | |
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1778 Method* target_handle = task->method(); |
0 | 1779 int compilable = ciEnv::MethodCompilable; |
1780 { | |
1781 int system_dictionary_modification_counter; | |
1782 { | |
1783 MutexLocker locker(Compile_lock, thread); | |
1784 system_dictionary_modification_counter = SystemDictionary::number_of_modifications(); | |
1785 } | |
1786 | |
1787 NoHandleMark nhm; | |
1788 ThreadToNativeFromVM ttn(thread); | |
1789 | |
1790 ciEnv ci_env(task, system_dictionary_modification_counter); | |
1791 if (should_break) { | |
1792 ci_env.set_break_at_compile(true); | |
1793 } | |
1794 if (should_log) { | |
1795 ci_env.set_log(thread->log()); | |
1796 } | |
1797 assert(thread->env() == &ci_env, "set by ci_env"); | |
1798 // The thread-env() field is cleared in ~CompileTaskWrapper. | |
1799 | |
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1800 // Cache Jvmti state |
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1801 ci_env.cache_jvmti_state(); |
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1802 |
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1803 // Cache DTrace flags |
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1804 ci_env.cache_dtrace_flags(); |
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1805 |
0 | 1806 ciMethod* target = ci_env.get_method_from_handle(target_handle); |
1807 | |
1808 TraceTime t1("compilation", &time); | |
1809 | |
1810 compiler(task->comp_level())->compile_method(&ci_env, target, osr_bci); | |
1811 | |
1812 if (!ci_env.failing() && task->code() == NULL) { | |
1813 //assert(false, "compiler should always document failure"); | |
1814 // The compiler elected, without comment, not to register a result. | |
1815 // Do not attempt further compilations of this method. | |
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1816 ci_env.record_method_not_compilable("compile failed", !TieredCompilation); |
0 | 1817 } |
1818 | |
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1819 // Copy this bit to the enclosing block: |
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1820 compilable = ci_env.compilable(); |
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1821 |
0 | 1822 if (ci_env.failing()) { |
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1823 const char* retry_message = ci_env.retry_message(); |
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1824 if (_compilation_log != NULL) { |
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1825 _compilation_log->log_failure(thread, task, ci_env.failure_reason(), retry_message); |
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1826 } |
0 | 1827 if (PrintCompilation) { |
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1828 FormatBufferResource msg = retry_message != NULL ? |
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1829 err_msg_res("COMPILE SKIPPED: %s (%s)", ci_env.failure_reason(), retry_message) : |
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1830 err_msg_res("COMPILE SKIPPED: %s", ci_env.failure_reason()); |
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1831 task->print_compilation(tty, msg); |
0 | 1832 } |
1833 } else { | |
1834 task->mark_success(); | |
1835 task->set_num_inlined_bytecodes(ci_env.num_inlined_bytecodes()); | |
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1836 if (_compilation_log != NULL) { |
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1837 nmethod* code = task->code(); |
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1838 if (code != NULL) { |
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1839 _compilation_log->log_nmethod(thread, code); |
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1840 } |
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1841 } |
0 | 1842 } |
1843 } | |
1844 pop_jni_handle_block(); | |
1845 | |
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1846 methodHandle method(thread, task->method()); |
0 | 1847 |
1848 DTRACE_METHOD_COMPILE_END_PROBE(compiler(task->comp_level()), method, task->is_success()); | |
1849 | |
1850 collect_statistics(thread, time, task); | |
1851 | |
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1852 if (PrintCompilation && PrintCompilation2) { |
4047 | 1853 tty->print("%7d ", (int) tty->time_stamp().milliseconds()); // print timestamp |
1854 tty->print("%4d ", compile_id); // print compilation number | |
1855 tty->print("%s ", (is_osr ? "%" : " ")); | |
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1856 int code_size = (task->code() == NULL) ? 0 : task->code()->total_size(); |
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1857 tty->print_cr("size: %d time: %d inlined: %d bytes", code_size, (int)time.milliseconds(), task->num_inlined_bytecodes()); |
4047 | 1858 } |
1859 | |
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1860 // Disable compilation, if required. |
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1861 switch (compilable) { |
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1862 case ciEnv::MethodCompilable_never: |
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1863 if (is_osr) |
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1864 method->set_not_osr_compilable_quietly(); |
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1865 else |
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1866 method->set_not_compilable_quietly(); |
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1867 break; |
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1868 case ciEnv::MethodCompilable_not_at_tier: |
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1869 if (is_osr) |
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1870 method->set_not_osr_compilable_quietly(task->comp_level()); |
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1871 else |
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1872 method->set_not_compilable_quietly(task->comp_level()); |
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1873 break; |
0 | 1874 } |
1875 | |
1876 // Note that the queued_for_compilation bits are cleared without | |
1877 // protection of a mutex. [They were set by the requester thread, | |
1878 // when adding the task to the complie queue -- at which time the | |
1879 // compile queue lock was held. Subsequently, we acquired the compile | |
1880 // queue lock to get this task off the compile queue; thus (to belabour | |
1881 // the point somewhat) our clearing of the bits must be occurring | |
1882 // only after the setting of the bits. See also 14012000 above. | |
1883 method->clear_queued_for_compilation(); | |
1884 | |
1885 #ifdef ASSERT | |
1886 if (CollectedHeap::fired_fake_oom()) { | |
1887 // The current compile received a fake OOM during compilation so | |
1888 // go ahead and exit the VM since the test apparently succeeded | |
1889 tty->print_cr("*** Shutting down VM after successful fake OOM"); | |
1890 vm_exit(0); | |
1891 } | |
1892 #endif | |
1893 } | |
1894 | |
1895 // ------------------------------------------------------------------ | |
1202 | 1896 // CompileBroker::handle_full_code_cache |
1897 // | |
1898 // The CodeCache is full. Print out warning and disable compilation or | |
1899 // try code cache cleaning so compilation can continue later. | |
1900 void CompileBroker::handle_full_code_cache() { | |
1901 UseInterpreter = true; | |
1902 if (UseCompiler || AlwaysCompileLoopMethods ) { | |
1728
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1903 if (xtty != NULL) { |
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1904 stringStream s; |
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1905 // Dump code cache state into a buffer before locking the tty, |
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1906 // because log_state() will use locks causing lock conflicts. |
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1907 CodeCache::log_state(&s); |
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1908 // Lock to prevent tearing |
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1909 ttyLocker ttyl; |
1728
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1910 xtty->begin_elem("code_cache_full"); |
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1911 xtty->print(s.as_string()); |
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1912 xtty->stamp(); |
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1913 xtty->end_elem(); |
1202 | 1914 } |
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1915 warning("CodeCache is full. Compiler has been disabled."); |
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1916 warning("Try increasing the code cache size using -XX:ReservedCodeCacheSize="); |
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1917 CodeCache::print_bounds(tty); |
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1918 #ifndef PRODUCT |
1202 | 1919 if (CompileTheWorld || ExitOnFullCodeCache) { |
1920 before_exit(JavaThread::current()); | |
1921 exit_globals(); // will delete tty | |
1922 vm_direct_exit(CompileTheWorld ? 0 : 1); | |
1923 } | |
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1924 #endif |
1202 | 1925 if (UseCodeCacheFlushing) { |
1926 NMethodSweeper::handle_full_code_cache(true); | |
1927 } else { | |
1928 UseCompiler = false; | |
1929 AlwaysCompileLoopMethods = false; | |
1930 } | |
1931 } | |
1932 } | |
1933 | |
1934 // ------------------------------------------------------------------ | |
0 | 1935 // CompileBroker::set_last_compile |
1936 // | |
1937 // Record this compilation for debugging purposes. | |
1938 void CompileBroker::set_last_compile(CompilerThread* thread, methodHandle method, bool is_osr, int comp_level) { | |
1939 ResourceMark rm; | |
1940 char* method_name = method->name()->as_C_string(); | |
1941 strncpy(_last_method_compiled, method_name, CompileBroker::name_buffer_length); | |
1942 char current_method[CompilerCounters::cmname_buffer_length]; | |
1943 size_t maxLen = CompilerCounters::cmname_buffer_length; | |
1944 | |
1945 if (UsePerfData) { | |
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1946 const char* class_name = method->method_holder()->name()->as_C_string(); |
0 | 1947 |
1948 size_t s1len = strlen(class_name); | |
1949 size_t s2len = strlen(method_name); | |
1950 | |
1951 // check if we need to truncate the string | |
1952 if (s1len + s2len + 2 > maxLen) { | |
1953 | |
1954 // the strategy is to lop off the leading characters of the | |
1955 // class name and the trailing characters of the method name. | |
1956 | |
1957 if (s2len + 2 > maxLen) { | |
1958 // lop of the entire class name string, let snprintf handle | |
1959 // truncation of the method name. | |
1960 class_name += s1len; // null string | |
1961 } | |
1962 else { | |
1963 // lop off the extra characters from the front of the class name | |
1964 class_name += ((s1len + s2len + 2) - maxLen); | |
1965 } | |
1966 } | |
1967 | |
1968 jio_snprintf(current_method, maxLen, "%s %s", class_name, method_name); | |
1969 } | |
1970 | |
1971 if (CICountOSR && is_osr) { | |
1972 _last_compile_type = osr_compile; | |
1973 } else { | |
1974 _last_compile_type = normal_compile; | |
1975 } | |
1976 _last_compile_level = comp_level; | |
1977 | |
1978 if (UsePerfData) { | |
1979 CompilerCounters* counters = thread->counters(); | |
1980 counters->set_current_method(current_method); | |
1981 counters->set_compile_type((jlong)_last_compile_type); | |
1982 } | |
1983 } | |
1984 | |
1985 | |
1986 // ------------------------------------------------------------------ | |
1987 // CompileBroker::push_jni_handle_block | |
1988 // | |
1989 // Push on a new block of JNI handles. | |
1990 void CompileBroker::push_jni_handle_block() { | |
1991 JavaThread* thread = JavaThread::current(); | |
1992 | |
1993 // Allocate a new block for JNI handles. | |
1994 // Inlined code from jni_PushLocalFrame() | |
1995 JNIHandleBlock* java_handles = thread->active_handles(); | |
1996 JNIHandleBlock* compile_handles = JNIHandleBlock::allocate_block(thread); | |
1997 assert(compile_handles != NULL && java_handles != NULL, "should not be NULL"); | |
1998 compile_handles->set_pop_frame_link(java_handles); // make sure java handles get gc'd. | |
1999 thread->set_active_handles(compile_handles); | |
2000 } | |
2001 | |
2002 | |
2003 // ------------------------------------------------------------------ | |
2004 // CompileBroker::pop_jni_handle_block | |
2005 // | |
2006 // Pop off the current block of JNI handles. | |
2007 void CompileBroker::pop_jni_handle_block() { | |
2008 JavaThread* thread = JavaThread::current(); | |
2009 | |
2010 // Release our JNI handle block | |
2011 JNIHandleBlock* compile_handles = thread->active_handles(); | |
2012 JNIHandleBlock* java_handles = compile_handles->pop_frame_link(); | |
2013 thread->set_active_handles(java_handles); | |
2014 compile_handles->set_pop_frame_link(NULL); | |
2015 JNIHandleBlock::release_block(compile_handles, thread); // may block | |
2016 } | |
2017 | |
2018 | |
2019 // ------------------------------------------------------------------ | |
2020 // CompileBroker::check_break_at | |
2021 // | |
2022 // Should the compilation break at the current compilation. | |
2023 bool CompileBroker::check_break_at(methodHandle method, int compile_id, bool is_osr) { | |
2024 if (CICountOSR && is_osr && (compile_id == CIBreakAtOSR)) { | |
2025 return true; | |
2026 } else if( CompilerOracle::should_break_at(method) ) { // break when compiling | |
2027 return true; | |
2028 } else { | |
2029 return (compile_id == CIBreakAt); | |
2030 } | |
2031 } | |
2032 | |
2033 // ------------------------------------------------------------------ | |
2034 // CompileBroker::collect_statistics | |
2035 // | |
2036 // Collect statistics about the compilation. | |
2037 | |
2038 void CompileBroker::collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task) { | |
2039 bool success = task->is_success(); | |
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6964458: Reimplement class meta-data storage to use native memory
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6266
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changeset
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2040 methodHandle method (thread, task->method()); |
0 | 2041 uint compile_id = task->compile_id(); |
2042 bool is_osr = (task->osr_bci() != standard_entry_bci); | |
2043 nmethod* code = task->code(); | |
2044 CompilerCounters* counters = thread->counters(); | |
2045 | |
2046 assert(code == NULL || code->is_locked_by_vm(), "will survive the MutexLocker"); | |
2047 MutexLocker locker(CompileStatistics_lock); | |
2048 | |
2049 // _perf variables are production performance counters which are | |
2050 // updated regardless of the setting of the CITime and CITimeEach flags | |
2051 // | |
2052 if (!success) { | |
2053 _total_bailout_count++; | |
2054 if (UsePerfData) { | |
2055 _perf_last_failed_method->set_value(counters->current_method()); | |
2056 _perf_last_failed_type->set_value(counters->compile_type()); | |
2057 _perf_total_bailout_count->inc(); | |
2058 } | |
2059 } else if (code == NULL) { | |
2060 if (UsePerfData) { | |
2061 _perf_last_invalidated_method->set_value(counters->current_method()); | |
2062 _perf_last_invalidated_type->set_value(counters->compile_type()); | |
2063 _perf_total_invalidated_count->inc(); | |
2064 } | |
2065 _total_invalidated_count++; | |
2066 } else { | |
2067 // Compilation succeeded | |
2068 | |
2069 // update compilation ticks - used by the implementation of | |
2070 // java.lang.management.CompilationMBean | |
2071 _perf_total_compilation->inc(time.ticks()); | |
2072 | |
2073 if (CITime) { | |
2074 _t_total_compilation.add(time); | |
2075 if (is_osr) { | |
2076 _t_osr_compilation.add(time); | |
2077 _sum_osr_bytes_compiled += method->code_size() + task->num_inlined_bytecodes(); | |
2078 } else { | |
2079 _t_standard_compilation.add(time); | |
2080 _sum_standard_bytes_compiled += method->code_size() + task->num_inlined_bytecodes(); | |
2081 } | |
2082 } | |
2083 | |
2084 if (UsePerfData) { | |
2085 // save the name of the last method compiled | |
2086 _perf_last_method->set_value(counters->current_method()); | |
2087 _perf_last_compile_type->set_value(counters->compile_type()); | |
2088 _perf_last_compile_size->set_value(method->code_size() + | |
2089 task->num_inlined_bytecodes()); | |
2090 if (is_osr) { | |
2091 _perf_osr_compilation->inc(time.ticks()); | |
2092 _perf_sum_osr_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes()); | |
2093 } else { | |
2094 _perf_standard_compilation->inc(time.ticks()); | |
2095 _perf_sum_standard_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes()); | |
2096 } | |
2097 } | |
2098 | |
2099 if (CITimeEach) { | |
2100 float bytes_per_sec = 1.0 * (method->code_size() + task->num_inlined_bytecodes()) / time.seconds(); | |
2101 tty->print_cr("%3d seconds: %f bytes/sec : %f (bytes %d + %d inlined)", | |
2102 compile_id, time.seconds(), bytes_per_sec, method->code_size(), task->num_inlined_bytecodes()); | |
2103 } | |
2104 | |
2105 // Collect counts of successful compilations | |
1748 | 2106 _sum_nmethod_size += code->total_size(); |
2107 _sum_nmethod_code_size += code->insts_size(); | |
0 | 2108 _total_compile_count++; |
2109 | |
2110 if (UsePerfData) { | |
1748 | 2111 _perf_sum_nmethod_size->inc( code->total_size()); |
2112 _perf_sum_nmethod_code_size->inc(code->insts_size()); | |
0 | 2113 _perf_total_compile_count->inc(); |
2114 } | |
2115 | |
2116 if (is_osr) { | |
2117 if (UsePerfData) _perf_total_osr_compile_count->inc(); | |
2118 _total_osr_compile_count++; | |
2119 } else { | |
2120 if (UsePerfData) _perf_total_standard_compile_count->inc(); | |
2121 _total_standard_compile_count++; | |
2122 } | |
2123 } | |
2124 // set the current method for the thread to null | |
2125 if (UsePerfData) counters->set_current_method(""); | |
2126 } | |
2127 | |
2128 | |
2129 | |
2130 void CompileBroker::print_times() { | |
2131 tty->cr(); | |
2132 tty->print_cr("Accumulated compiler times (for compiled methods only)"); | |
2133 tty->print_cr("------------------------------------------------"); | |
2134 //0000000000111111111122222222223333333333444444444455555555556666666666 | |
2135 //0123456789012345678901234567890123456789012345678901234567890123456789 | |
2136 tty->print_cr(" Total compilation time : %6.3f s", CompileBroker::_t_total_compilation.seconds()); | |
2137 tty->print_cr(" Standard compilation : %6.3f s, Average : %2.3f", | |
2138 CompileBroker::_t_standard_compilation.seconds(), | |
2139 CompileBroker::_t_standard_compilation.seconds() / CompileBroker::_total_standard_compile_count); | |
2140 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 | 2141 |
1783 | 2142 if (compiler(CompLevel_simple) != NULL) { |
2143 compiler(CompLevel_simple)->print_timers(); | |
0 | 2144 } |
1783 | 2145 if (compiler(CompLevel_full_optimization) != NULL) { |
2146 compiler(CompLevel_full_optimization)->print_timers(); | |
2147 } | |
0 | 2148 tty->cr(); |
2149 int tcb = CompileBroker::_sum_osr_bytes_compiled + CompileBroker::_sum_standard_bytes_compiled; | |
2150 tty->print_cr(" Total compiled bytecodes : %6d bytes", tcb); | |
2151 tty->print_cr(" Standard compilation : %6d bytes", CompileBroker::_sum_standard_bytes_compiled); | |
2152 tty->print_cr(" On stack replacement : %6d bytes", CompileBroker::_sum_osr_bytes_compiled); | |
2153 int bps = (int)(tcb / CompileBroker::_t_total_compilation.seconds()); | |
2154 tty->print_cr(" Average compilation speed: %6d bytes/s", bps); | |
2155 tty->cr(); | |
2156 tty->print_cr(" nmethod code size : %6d bytes", CompileBroker::_sum_nmethod_code_size); | |
2157 tty->print_cr(" nmethod total size : %6d bytes", CompileBroker::_sum_nmethod_size); | |
2158 } | |
2159 | |
2160 | |
2161 // Debugging output for failure | |
2162 void CompileBroker::print_last_compile() { | |
2163 if ( _last_compile_level != CompLevel_none && | |
2164 compiler(_last_compile_level) != NULL && | |
2165 _last_method_compiled != NULL && | |
2166 _last_compile_type != no_compile) { | |
2167 if (_last_compile_type == osr_compile) { | |
2168 tty->print_cr("Last parse: [osr]%d+++(%d) %s", | |
2169 _osr_compilation_id, _last_compile_level, _last_method_compiled); | |
2170 } else { | |
2171 tty->print_cr("Last parse: %d+++(%d) %s", | |
2172 _compilation_id, _last_compile_level, _last_method_compiled); | |
2173 } | |
2174 } | |
2175 } | |
2176 | |
2177 | |
2178 void CompileBroker::print_compiler_threads_on(outputStream* st) { | |
2179 #ifndef PRODUCT | |
2180 st->print_cr("Compiler thread printing unimplemented."); | |
2181 st->cr(); | |
2182 #endif | |
2183 } |