Mercurial > hg > truffle
annotate src/share/vm/compiler/compileBroker.cpp @ 14702:d4dd5204c0aa
Merge
author | ehelin |
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date | Fri, 14 Mar 2014 13:27:18 +0100 |
parents | 28f281e8de1d |
children | d8041d695d19 |
rev | line source |
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0 | 1 /* |
10405 | 2 * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/systemDictionary.hpp" | |
27 #include "classfile/vmSymbols.hpp" | |
28 #include "code/codeCache.hpp" | |
29 #include "compiler/compileBroker.hpp" | |
30 #include "compiler/compileLog.hpp" | |
31 #include "compiler/compilerOracle.hpp" | |
32 #include "interpreter/linkResolver.hpp" | |
33 #include "memory/allocation.inline.hpp" | |
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34 #include "oops/methodData.hpp" |
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35 #include "oops/method.hpp" |
1972 | 36 #include "oops/oop.inline.hpp" |
37 #include "prims/nativeLookup.hpp" | |
38 #include "runtime/arguments.hpp" | |
39 #include "runtime/compilationPolicy.hpp" | |
40 #include "runtime/init.hpp" | |
41 #include "runtime/interfaceSupport.hpp" | |
42 #include "runtime/javaCalls.hpp" | |
43 #include "runtime/os.hpp" | |
44 #include "runtime/sharedRuntime.hpp" | |
45 #include "runtime/sweeper.hpp" | |
10405 | 46 #include "trace/tracing.hpp" |
1972 | 47 #include "utilities/dtrace.hpp" |
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48 #include "utilities/events.hpp" |
1972 | 49 #ifdef COMPILER1 |
50 #include "c1/c1_Compiler.hpp" | |
51 #endif | |
52 #ifdef COMPILER2 | |
53 #include "opto/c2compiler.hpp" | |
54 #endif | |
55 #ifdef SHARK | |
56 #include "shark/sharkCompiler.hpp" | |
57 #endif | |
0 | 58 |
59 #ifdef DTRACE_ENABLED | |
60 | |
61 // Only bother with this argument setup if dtrace is available | |
62 | |
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63 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, comp_name) \ |
4006 | 64 { \ |
65 Symbol* klass_name = (method)->klass_name(); \ | |
66 Symbol* name = (method)->name(); \ | |
67 Symbol* signature = (method)->signature(); \ | |
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68 HOTSPOT_METHOD_COMPILE_BEGIN( \ |
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69 (char *) comp_name, strlen(comp_name), \ |
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70 (char *) klass_name->bytes(), klass_name->utf8_length(), \ |
4006 | 71 (char *) name->bytes(), name->utf8_length(), \ |
72 (char *) signature->bytes(), signature->utf8_length()); \ | |
73 } | |
74 | |
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75 #define DTRACE_METHOD_COMPILE_END_PROBE(method, comp_name, success) \ |
4006 | 76 { \ |
77 Symbol* klass_name = (method)->klass_name(); \ | |
78 Symbol* name = (method)->name(); \ | |
79 Symbol* signature = (method)->signature(); \ | |
80 HOTSPOT_METHOD_COMPILE_END( \ | |
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81 (char *) comp_name, strlen(comp_name), \ |
4006 | 82 (char *) klass_name->bytes(), klass_name->utf8_length(), \ |
83 (char *) name->bytes(), name->utf8_length(), \ | |
84 (char *) signature->bytes(), signature->utf8_length(), (success)); \ | |
85 } | |
86 | |
0 | 87 #else // ndef DTRACE_ENABLED |
88 | |
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89 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, comp_name) |
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90 #define DTRACE_METHOD_COMPILE_END_PROBE(method, comp_name, success) |
0 | 91 |
92 #endif // ndef DTRACE_ENABLED | |
93 | |
94 bool CompileBroker::_initialized = false; | |
95 volatile bool CompileBroker::_should_block = false; | |
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96 volatile jint CompileBroker::_print_compilation_warning = 0; |
1202 | 97 volatile jint CompileBroker::_should_compile_new_jobs = run_compilation; |
0 | 98 |
99 // The installed compiler(s) | |
100 AbstractCompiler* CompileBroker::_compilers[2]; | |
101 | |
14236 | 102 // These counters are used to assign an unique ID to each compilation. |
103 volatile jint CompileBroker::_compilation_id = 0; | |
104 volatile jint CompileBroker::_osr_compilation_id = 0; | |
0 | 105 |
106 // Debugging information | |
107 int CompileBroker::_last_compile_type = no_compile; | |
108 int CompileBroker::_last_compile_level = CompLevel_none; | |
109 char CompileBroker::_last_method_compiled[CompileBroker::name_buffer_length]; | |
110 | |
111 // Performance counters | |
112 PerfCounter* CompileBroker::_perf_total_compilation = NULL; | |
113 PerfCounter* CompileBroker::_perf_osr_compilation = NULL; | |
114 PerfCounter* CompileBroker::_perf_standard_compilation = NULL; | |
115 | |
116 PerfCounter* CompileBroker::_perf_total_bailout_count = NULL; | |
117 PerfCounter* CompileBroker::_perf_total_invalidated_count = NULL; | |
118 PerfCounter* CompileBroker::_perf_total_compile_count = NULL; | |
119 PerfCounter* CompileBroker::_perf_total_osr_compile_count = NULL; | |
120 PerfCounter* CompileBroker::_perf_total_standard_compile_count = NULL; | |
121 | |
122 PerfCounter* CompileBroker::_perf_sum_osr_bytes_compiled = NULL; | |
123 PerfCounter* CompileBroker::_perf_sum_standard_bytes_compiled = NULL; | |
124 PerfCounter* CompileBroker::_perf_sum_nmethod_size = NULL; | |
125 PerfCounter* CompileBroker::_perf_sum_nmethod_code_size = NULL; | |
126 | |
127 PerfStringVariable* CompileBroker::_perf_last_method = NULL; | |
128 PerfStringVariable* CompileBroker::_perf_last_failed_method = NULL; | |
129 PerfStringVariable* CompileBroker::_perf_last_invalidated_method = NULL; | |
130 PerfVariable* CompileBroker::_perf_last_compile_type = NULL; | |
131 PerfVariable* CompileBroker::_perf_last_compile_size = NULL; | |
132 PerfVariable* CompileBroker::_perf_last_failed_type = NULL; | |
133 PerfVariable* CompileBroker::_perf_last_invalidated_type = NULL; | |
134 | |
135 // Timers and counters for generating statistics | |
136 elapsedTimer CompileBroker::_t_total_compilation; | |
137 elapsedTimer CompileBroker::_t_osr_compilation; | |
138 elapsedTimer CompileBroker::_t_standard_compilation; | |
139 | |
140 int CompileBroker::_total_bailout_count = 0; | |
141 int CompileBroker::_total_invalidated_count = 0; | |
142 int CompileBroker::_total_compile_count = 0; | |
143 int CompileBroker::_total_osr_compile_count = 0; | |
144 int CompileBroker::_total_standard_compile_count = 0; | |
145 | |
146 int CompileBroker::_sum_osr_bytes_compiled = 0; | |
147 int CompileBroker::_sum_standard_bytes_compiled = 0; | |
148 int CompileBroker::_sum_nmethod_size = 0; | |
149 int CompileBroker::_sum_nmethod_code_size = 0; | |
150 | |
10405 | 151 long CompileBroker::_peak_compilation_time = 0; |
152 | |
153 CompileQueue* CompileBroker::_c2_method_queue = NULL; | |
154 CompileQueue* CompileBroker::_c1_method_queue = NULL; | |
155 CompileTask* CompileBroker::_task_free_list = NULL; | |
0 | 156 |
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157 GrowableArray<CompilerThread*>* CompileBroker::_compiler_threads = NULL; |
0 | 158 |
159 | |
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160 class CompilationLog : public StringEventLog { |
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161 public: |
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162 CompilationLog() : StringEventLog("Compilation events") { |
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163 } |
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164 |
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165 void log_compile(JavaThread* thread, CompileTask* task) { |
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166 StringLogMessage lm; |
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167 stringStream sstr = lm.stream(); |
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168 // msg.time_stamp().update_to(tty->time_stamp().ticks()); |
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169 task->print_compilation(&sstr, NULL, true); |
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170 log(thread, "%s", (const char*)lm); |
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171 } |
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172 |
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173 void log_nmethod(JavaThread* thread, nmethod* nm) { |
4944 | 174 log(thread, "nmethod %d%s " INTPTR_FORMAT " code ["INTPTR_FORMAT ", " INTPTR_FORMAT "]", |
175 nm->compile_id(), nm->is_osr_method() ? "%" : "", | |
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176 nm, nm->code_begin(), nm->code_end()); |
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177 } |
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178 |
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179 void log_failure(JavaThread* thread, CompileTask* task, const char* reason, const char* retry_message) { |
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180 StringLogMessage lm; |
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181 lm.print("%4d COMPILE SKIPPED: %s", task->compile_id(), reason); |
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182 if (retry_message != NULL) { |
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183 lm.append(" (%s)", retry_message); |
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184 } |
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185 lm.print("\n"); |
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186 log(thread, "%s", (const char*)lm); |
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187 } |
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188 }; |
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189 |
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190 static CompilationLog* _compilation_log = NULL; |
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191 |
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192 void compileBroker_init() { |
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193 if (LogEvents) { |
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194 _compilation_log = new CompilationLog(); |
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195 } |
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196 } |
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197 |
0 | 198 CompileTaskWrapper::CompileTaskWrapper(CompileTask* task) { |
199 CompilerThread* thread = CompilerThread::current(); | |
200 thread->set_task(task); | |
201 CompileLog* log = thread->log(); | |
202 if (log != NULL) task->log_task_start(log); | |
203 } | |
204 | |
205 CompileTaskWrapper::~CompileTaskWrapper() { | |
206 CompilerThread* thread = CompilerThread::current(); | |
207 CompileTask* task = thread->task(); | |
208 CompileLog* log = thread->log(); | |
209 if (log != NULL) task->log_task_done(log); | |
210 thread->set_task(NULL); | |
211 task->set_code_handle(NULL); | |
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212 thread->set_env(NULL); |
0 | 213 if (task->is_blocking()) { |
214 MutexLocker notifier(task->lock(), thread); | |
215 task->mark_complete(); | |
216 // Notify the waiting thread that the compilation has completed. | |
217 task->lock()->notify_all(); | |
218 } else { | |
219 task->mark_complete(); | |
220 | |
221 // By convention, the compiling thread is responsible for | |
222 // recycling a non-blocking CompileTask. | |
223 CompileBroker::free_task(task); | |
224 } | |
225 } | |
226 | |
227 | |
228 // ------------------------------------------------------------------ | |
229 // CompileTask::initialize | |
230 void CompileTask::initialize(int compile_id, | |
231 methodHandle method, | |
232 int osr_bci, | |
233 int comp_level, | |
234 methodHandle hot_method, | |
235 int hot_count, | |
236 const char* comment, | |
237 bool is_blocking) { | |
238 assert(!_lock->is_locked(), "bad locking"); | |
239 | |
240 _compile_id = compile_id; | |
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241 _method = method(); |
7409 | 242 _method_holder = JNIHandles::make_global(method->method_holder()->klass_holder()); |
0 | 243 _osr_bci = osr_bci; |
244 _is_blocking = is_blocking; | |
245 _comp_level = comp_level; | |
246 _num_inlined_bytecodes = 0; | |
247 | |
248 _is_complete = false; | |
249 _is_success = false; | |
250 _code_handle = NULL; | |
251 | |
252 _hot_method = NULL; | |
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253 _hot_method_holder = NULL; |
0 | 254 _hot_count = hot_count; |
255 _time_queued = 0; // tidy | |
256 _comment = comment; | |
257 | |
258 if (LogCompilation) { | |
259 _time_queued = os::elapsed_counter(); | |
260 if (hot_method.not_null()) { | |
261 if (hot_method == method) { | |
262 _hot_method = _method; | |
263 } else { | |
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264 _hot_method = hot_method(); |
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265 // only add loader or mirror if different from _method_holder |
7409 | 266 _hot_method_holder = JNIHandles::make_global(hot_method->method_holder()->klass_holder()); |
0 | 267 } |
268 } | |
269 } | |
270 | |
271 _next = NULL; | |
272 } | |
273 | |
274 // ------------------------------------------------------------------ | |
275 // CompileTask::code/set_code | |
276 nmethod* CompileTask::code() const { | |
277 if (_code_handle == NULL) return NULL; | |
278 return _code_handle->code(); | |
279 } | |
280 void CompileTask::set_code(nmethod* nm) { | |
281 if (_code_handle == NULL && nm == NULL) return; | |
282 guarantee(_code_handle != NULL, ""); | |
283 _code_handle->set_code(nm); | |
284 if (nm == NULL) _code_handle = NULL; // drop the handle also | |
285 } | |
286 | |
287 // ------------------------------------------------------------------ | |
288 // CompileTask::free | |
289 void CompileTask::free() { | |
290 set_code(NULL); | |
291 assert(!_lock->is_locked(), "Should not be locked when freed"); | |
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292 JNIHandles::destroy_global(_method_holder); |
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293 JNIHandles::destroy_global(_hot_method_holder); |
0 | 294 } |
295 | |
296 | |
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297 void CompileTask::mark_on_stack() { |
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298 // Mark these methods as something redefine classes cannot remove. |
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299 _method->set_on_stack(true); |
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300 if (_hot_method != NULL) { |
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301 _hot_method->set_on_stack(true); |
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302 } |
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303 } |
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304 |
0 | 305 // ------------------------------------------------------------------ |
306 // CompileTask::print | |
307 void CompileTask::print() { | |
308 tty->print("<CompileTask compile_id=%d ", _compile_id); | |
309 tty->print("method="); | |
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310 _method->print_name(tty); |
0 | 311 tty->print_cr(" osr_bci=%d is_blocking=%s is_complete=%s is_success=%s>", |
312 _osr_bci, bool_to_str(_is_blocking), | |
313 bool_to_str(_is_complete), bool_to_str(_is_success)); | |
314 } | |
315 | |
1783 | 316 |
0 | 317 // ------------------------------------------------------------------ |
318 // CompileTask::print_line_on_error | |
319 // | |
320 // This function is called by fatal error handler when the thread | |
321 // causing troubles is a compiler thread. | |
322 // | |
323 // Do not grab any lock, do not allocate memory. | |
324 // | |
325 // Otherwise it's the same as CompileTask::print_line() | |
326 // | |
327 void CompileTask::print_line_on_error(outputStream* st, char* buf, int buflen) { | |
328 // print compiler name | |
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329 st->print("%s:", CompileBroker::compiler_name(comp_level())); |
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330 print_compilation(st); |
0 | 331 } |
332 | |
333 // ------------------------------------------------------------------ | |
334 // CompileTask::print_line | |
335 void CompileTask::print_line() { | |
336 ttyLocker ttyl; // keep the following output all in one block | |
337 // print compiler name if requested | |
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338 if (CIPrintCompilerName) tty->print("%s:", CompileBroker::compiler_name(comp_level())); |
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339 print_compilation(); |
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340 } |
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341 |
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342 |
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343 // ------------------------------------------------------------------ |
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344 // CompileTask::print_compilation_impl |
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345 void CompileTask::print_compilation_impl(outputStream* st, Method* method, int compile_id, int comp_level, |
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346 bool is_osr_method, int osr_bci, bool is_blocking, |
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347 const char* msg, bool short_form) { |
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348 if (!short_form) { |
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349 st->print("%7d ", (int) st->time_stamp().milliseconds()); // print timestamp |
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350 } |
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351 st->print("%4d ", compile_id); // print compilation number |
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352 |
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353 // For unloaded methods the transition to zombie occurs after the |
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354 // method is cleared so it's impossible to report accurate |
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355 // information for that case. |
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356 bool is_synchronized = false; |
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357 bool has_exception_handler = false; |
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358 bool is_native = false; |
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359 if (method != NULL) { |
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360 is_synchronized = method->is_synchronized(); |
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361 has_exception_handler = method->has_exception_handler(); |
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362 is_native = method->is_native(); |
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363 } |
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364 // method attributes |
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365 const char compile_type = is_osr_method ? '%' : ' '; |
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366 const char sync_char = is_synchronized ? 's' : ' '; |
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367 const char exception_char = has_exception_handler ? '!' : ' '; |
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368 const char blocking_char = is_blocking ? 'b' : ' '; |
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369 const char native_char = is_native ? 'n' : ' '; |
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370 |
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371 // print method attributes |
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372 st->print("%c%c%c%c%c ", compile_type, sync_char, exception_char, blocking_char, native_char); |
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373 |
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374 if (TieredCompilation) { |
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375 if (comp_level != -1) st->print("%d ", comp_level); |
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376 else st->print("- "); |
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377 } |
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378 st->print(" "); // more indent |
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379 |
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380 if (method == NULL) { |
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381 st->print("(method)"); |
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382 } else { |
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383 method->print_short_name(st); |
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384 if (is_osr_method) { |
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385 st->print(" @ %d", osr_bci); |
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386 } |
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387 if (method->is_native()) |
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388 st->print(" (native)"); |
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389 else |
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390 st->print(" (%d bytes)", method->code_size()); |
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391 } |
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392 |
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393 if (msg != NULL) { |
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394 st->print(" %s", msg); |
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395 } |
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396 if (!short_form) { |
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397 st->cr(); |
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398 } |
0 | 399 } |
400 | |
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401 // ------------------------------------------------------------------ |
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402 // CompileTask::print_inlining |
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403 void CompileTask::print_inlining(outputStream* st, ciMethod* method, int inline_level, int bci, const char* msg) { |
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404 // 1234567 |
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405 st->print(" "); // print timestamp |
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406 // 1234 |
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407 st->print(" "); // print compilation number |
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408 |
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409 // method attributes |
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410 if (method->is_loaded()) { |
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411 const char sync_char = method->is_synchronized() ? 's' : ' '; |
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412 const char exception_char = method->has_exception_handlers() ? '!' : ' '; |
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413 const char monitors_char = method->has_monitor_bytecodes() ? 'm' : ' '; |
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414 |
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415 // print method attributes |
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416 st->print(" %c%c%c ", sync_char, exception_char, monitors_char); |
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417 } else { |
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418 // %s!bn |
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419 st->print(" "); // print method attributes |
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420 } |
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421 |
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422 if (TieredCompilation) { |
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423 st->print(" "); |
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424 } |
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425 st->print(" "); // more indent |
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426 st->print(" "); // initial inlining indent |
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427 |
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428 for (int i = 0; i < inline_level; i++) st->print(" "); |
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429 |
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430 st->print("@ %d ", bci); // print bci |
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431 method->print_short_name(st); |
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432 if (method->is_loaded()) |
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433 st->print(" (%d bytes)", method->code_size()); |
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434 else |
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435 st->print(" (not loaded)"); |
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436 |
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437 if (msg != NULL) { |
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438 st->print(" %s", msg); |
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439 } |
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440 st->cr(); |
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441 } |
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442 |
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443 // ------------------------------------------------------------------ |
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444 // CompileTask::print_inline_indent |
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445 void CompileTask::print_inline_indent(int inline_level, outputStream* st) { |
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446 // 1234567 |
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447 st->print(" "); // print timestamp |
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448 // 1234 |
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449 st->print(" "); // print compilation number |
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450 // %s!bn |
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451 st->print(" "); // print method attributes |
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452 if (TieredCompilation) { |
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453 st->print(" "); |
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454 } |
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455 st->print(" "); // more indent |
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456 st->print(" "); // initial inlining indent |
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457 for (int i = 0; i < inline_level; i++) st->print(" "); |
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458 } |
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459 |
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460 // ------------------------------------------------------------------ |
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461 // CompileTask::print_compilation |
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462 void CompileTask::print_compilation(outputStream* st, const char* msg, bool short_form) { |
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463 bool is_osr_method = osr_bci() != InvocationEntryBci; |
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464 print_compilation_impl(st, method(), compile_id(), comp_level(), is_osr_method, osr_bci(), is_blocking(), msg, short_form); |
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465 } |
0 | 466 |
467 // ------------------------------------------------------------------ | |
468 // CompileTask::log_task | |
469 void CompileTask::log_task(xmlStream* log) { | |
470 Thread* thread = Thread::current(); | |
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471 methodHandle method(thread, this->method()); |
0 | 472 ResourceMark rm(thread); |
473 | |
474 // <task id='9' method='M' osr_bci='X' level='1' blocking='1' stamp='1.234'> | |
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475 log->print(" compile_id='%d'", _compile_id); |
0 | 476 if (_osr_bci != CompileBroker::standard_entry_bci) { |
477 log->print(" compile_kind='osr'"); // same as nmethod::compile_kind | |
478 } // else compile_kind='c2c' | |
479 if (!method.is_null()) log->method(method); | |
480 if (_osr_bci != CompileBroker::standard_entry_bci) { | |
481 log->print(" osr_bci='%d'", _osr_bci); | |
482 } | |
483 if (_comp_level != CompLevel_highest_tier) { | |
484 log->print(" level='%d'", _comp_level); | |
485 } | |
486 if (_is_blocking) { | |
487 log->print(" blocking='1'"); | |
488 } | |
489 log->stamp(); | |
490 } | |
491 | |
492 | |
493 // ------------------------------------------------------------------ | |
494 // CompileTask::log_task_queued | |
495 void CompileTask::log_task_queued() { | |
496 Thread* thread = Thread::current(); | |
497 ttyLocker ttyl; | |
498 ResourceMark rm(thread); | |
499 | |
500 xtty->begin_elem("task_queued"); | |
501 log_task(xtty); | |
502 if (_comment != NULL) { | |
503 xtty->print(" comment='%s'", _comment); | |
504 } | |
505 if (_hot_method != NULL) { | |
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506 methodHandle hot(thread, _hot_method); |
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507 methodHandle method(thread, _method); |
0 | 508 if (hot() != method()) { |
509 xtty->method(hot); | |
510 } | |
511 } | |
512 if (_hot_count != 0) { | |
513 xtty->print(" hot_count='%d'", _hot_count); | |
514 } | |
515 xtty->end_elem(); | |
516 } | |
517 | |
518 | |
519 // ------------------------------------------------------------------ | |
520 // CompileTask::log_task_start | |
521 void CompileTask::log_task_start(CompileLog* log) { | |
522 log->begin_head("task"); | |
523 log_task(log); | |
524 log->end_head(); | |
525 } | |
526 | |
527 | |
528 // ------------------------------------------------------------------ | |
529 // CompileTask::log_task_done | |
530 void CompileTask::log_task_done(CompileLog* log) { | |
531 Thread* thread = Thread::current(); | |
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532 methodHandle method(thread, this->method()); |
0 | 533 ResourceMark rm(thread); |
534 | |
535 // <task_done ... stamp='1.234'> </task> | |
536 nmethod* nm = code(); | |
537 log->begin_elem("task_done success='%d' nmsize='%d' count='%d'", | |
1748 | 538 _is_success, nm == NULL ? 0 : nm->content_size(), |
0 | 539 method->invocation_count()); |
540 int bec = method->backedge_count(); | |
541 if (bec != 0) log->print(" backedge_count='%d'", bec); | |
542 // Note: "_is_complete" is about to be set, but is not. | |
543 if (_num_inlined_bytecodes != 0) { | |
544 log->print(" inlined_bytes='%d'", _num_inlined_bytecodes); | |
545 } | |
546 log->stamp(); | |
547 log->end_elem(); | |
548 log->tail("task"); | |
549 log->clear_identities(); // next task will have different CI | |
550 if (log->unflushed_count() > 2000) { | |
551 log->flush(); | |
552 } | |
553 log->mark_file_end(); | |
554 } | |
555 | |
556 | |
557 | |
558 // Add a CompileTask to a CompileQueue | |
559 void CompileQueue::add(CompileTask* task) { | |
560 assert(lock()->owned_by_self(), "must own lock"); | |
561 | |
562 task->set_next(NULL); | |
1783 | 563 task->set_prev(NULL); |
0 | 564 |
565 if (_last == NULL) { | |
566 // The compile queue is empty. | |
567 assert(_first == NULL, "queue is empty"); | |
568 _first = task; | |
569 _last = task; | |
570 } else { | |
571 // Append the task to the queue. | |
572 assert(_last->next() == NULL, "not last"); | |
573 _last->set_next(task); | |
1783 | 574 task->set_prev(_last); |
0 | 575 _last = task; |
576 } | |
1783 | 577 ++_size; |
0 | 578 |
579 // Mark the method as being in the compile queue. | |
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580 task->method()->set_queued_for_compilation(); |
0 | 581 |
582 if (CIPrintCompileQueue) { | |
583 print(); | |
584 } | |
585 | |
586 if (LogCompilation && xtty != NULL) { | |
587 task->log_task_queued(); | |
588 } | |
589 | |
590 // Notify CompilerThreads that a task is available. | |
1783 | 591 lock()->notify_all(); |
0 | 592 } |
593 | |
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594 void CompileQueue::delete_all() { |
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595 assert(lock()->owned_by_self(), "must own lock"); |
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596 if (_first != NULL) { |
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597 for (CompileTask* task = _first; task != NULL; task = task->next()) { |
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598 delete task; |
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599 } |
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600 _first = NULL; |
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601 } |
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602 } |
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603 |
0 | 604 // ------------------------------------------------------------------ |
605 // CompileQueue::get | |
606 // | |
607 // Get the next CompileTask from a CompileQueue | |
608 CompileTask* CompileQueue::get() { | |
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609 NMethodSweeper::possibly_sweep(); |
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610 |
0 | 611 MutexLocker locker(lock()); |
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612 // If _first is NULL we have no more compile jobs. There are two reasons for |
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613 // having no compile jobs: First, we compiled everything we wanted. Second, |
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614 // we ran out of code cache so compilation has been disabled. In the latter |
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615 // case we perform code cache sweeps to free memory such that we can re-enable |
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616 // compilation. |
0 | 617 while (_first == NULL) { |
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618 // Exit loop if compilation is disabled forever |
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619 if (CompileBroker::is_compilation_disabled_forever()) { |
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620 return NULL; |
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621 } |
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622 |
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623 if (UseCodeCacheFlushing && !CompileBroker::should_compile_new_jobs()) { |
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624 // Wait a certain amount of time to possibly do another sweep. |
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625 // We must wait until stack scanning has happened so that we can |
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626 // transition a method's state from 'not_entrant' to 'zombie'. |
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627 long wait_time = NmethodSweepCheckInterval * 1000; |
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628 if (FLAG_IS_DEFAULT(NmethodSweepCheckInterval)) { |
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629 // Only one thread at a time can do sweeping. Scale the |
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630 // wait time according to the number of compiler threads. |
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631 // As a result, the next sweep is likely to happen every 100ms |
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632 // with an arbitrary number of threads that do sweeping. |
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633 wait_time = 100 * CICompilerCount; |
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634 } |
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635 bool timeout = lock()->wait(!Mutex::_no_safepoint_check_flag, wait_time); |
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636 if (timeout) { |
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637 MutexUnlocker ul(lock()); |
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638 NMethodSweeper::possibly_sweep(); |
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639 } |
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640 } else { |
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641 // If there are no compilation tasks and we can compile new jobs |
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642 // (i.e., there is enough free space in the code cache) there is |
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643 // no need to invoke the sweeper. As a result, the hotness of methods |
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644 // remains unchanged. This behavior is desired, since we want to keep |
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645 // the stable state, i.e., we do not want to evict methods from the |
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646 // code cache if it is unnecessary. |
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647 // We need a timed wait here, since compiler threads can exit if compilation |
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648 // is disabled forever. We use 5 seconds wait time; the exiting of compiler threads |
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649 // is not critical and we do not want idle compiler threads to wake up too often. |
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650 lock()->wait(!Mutex::_no_safepoint_check_flag, 5*1000); |
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651 } |
0 | 652 } |
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653 |
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654 if (CompileBroker::is_compilation_disabled_forever()) { |
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655 return NULL; |
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656 } |
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657 |
1783 | 658 CompileTask* task = CompilationPolicy::policy()->select_task(this); |
659 remove(task); | |
660 return task; | |
661 } | |
0 | 662 |
1783 | 663 void CompileQueue::remove(CompileTask* task) |
664 { | |
665 assert(lock()->owned_by_self(), "must own lock"); | |
666 if (task->prev() != NULL) { | |
667 task->prev()->set_next(task->next()); | |
668 } else { | |
669 // max is the first element | |
670 assert(task == _first, "Sanity"); | |
671 _first = task->next(); | |
0 | 672 } |
673 | |
1783 | 674 if (task->next() != NULL) { |
675 task->next()->set_prev(task->prev()); | |
676 } else { | |
677 // max is the last element | |
678 assert(task == _last, "Sanity"); | |
679 _last = task->prev(); | |
680 } | |
681 --_size; | |
0 | 682 } |
683 | |
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684 // methods in the compile queue need to be marked as used on the stack |
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685 // so that they don't get reclaimed by Redefine Classes |
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686 void CompileQueue::mark_on_stack() { |
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687 CompileTask* task = _first; |
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688 while (task != NULL) { |
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689 task->mark_on_stack(); |
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690 task = task->next(); |
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691 } |
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692 } |
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693 |
0 | 694 // ------------------------------------------------------------------ |
695 // CompileQueue::print | |
696 void CompileQueue::print() { | |
697 tty->print_cr("Contents of %s", name()); | |
698 tty->print_cr("----------------------"); | |
699 CompileTask* task = _first; | |
700 while (task != NULL) { | |
701 task->print_line(); | |
702 task = task->next(); | |
703 } | |
704 tty->print_cr("----------------------"); | |
705 } | |
706 | |
707 CompilerCounters::CompilerCounters(const char* thread_name, int instance, TRAPS) { | |
708 | |
709 _current_method[0] = '\0'; | |
710 _compile_type = CompileBroker::no_compile; | |
711 | |
712 if (UsePerfData) { | |
713 ResourceMark rm; | |
714 | |
715 // create the thread instance name space string - don't create an | |
716 // instance subspace if instance is -1 - keeps the adapterThread | |
717 // counters from having a ".0" namespace. | |
718 const char* thread_i = (instance == -1) ? thread_name : | |
719 PerfDataManager::name_space(thread_name, instance); | |
720 | |
721 | |
722 char* name = PerfDataManager::counter_name(thread_i, "method"); | |
723 _perf_current_method = | |
724 PerfDataManager::create_string_variable(SUN_CI, name, | |
725 cmname_buffer_length, | |
726 _current_method, CHECK); | |
727 | |
728 name = PerfDataManager::counter_name(thread_i, "type"); | |
729 _perf_compile_type = PerfDataManager::create_variable(SUN_CI, name, | |
730 PerfData::U_None, | |
731 (jlong)_compile_type, | |
732 CHECK); | |
733 | |
734 name = PerfDataManager::counter_name(thread_i, "time"); | |
735 _perf_time = PerfDataManager::create_counter(SUN_CI, name, | |
736 PerfData::U_Ticks, CHECK); | |
737 | |
738 name = PerfDataManager::counter_name(thread_i, "compiles"); | |
739 _perf_compiles = PerfDataManager::create_counter(SUN_CI, name, | |
740 PerfData::U_Events, CHECK); | |
741 } | |
742 } | |
743 | |
744 // ------------------------------------------------------------------ | |
745 // CompileBroker::compilation_init | |
746 // | |
747 // Initialize the Compilation object | |
748 void CompileBroker::compilation_init() { | |
749 _last_method_compiled[0] = '\0'; | |
750 | |
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751 // No need to initialize compilation system if we do not use it. |
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752 if (!UseCompiler) { |
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753 return; |
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754 } |
1970 | 755 #ifndef SHARK |
0 | 756 // Set the interface to the current compiler(s). |
1783 | 757 int c1_count = CompilationPolicy::policy()->compiler_count(CompLevel_simple); |
758 int c2_count = CompilationPolicy::policy()->compiler_count(CompLevel_full_optimization); | |
0 | 759 #ifdef COMPILER1 |
1783 | 760 if (c1_count > 0) { |
761 _compilers[0] = new Compiler(); | |
762 } | |
0 | 763 #endif // COMPILER1 |
764 | |
765 #ifdef COMPILER2 | |
1783 | 766 if (c2_count > 0) { |
767 _compilers[1] = new C2Compiler(); | |
768 } | |
0 | 769 #endif // COMPILER2 |
770 | |
1970 | 771 #else // SHARK |
772 int c1_count = 0; | |
773 int c2_count = 1; | |
774 | |
775 _compilers[1] = new SharkCompiler(); | |
776 #endif // SHARK | |
1692 | 777 |
0 | 778 // Initialize the CompileTask free list |
779 _task_free_list = NULL; | |
780 | |
781 // Start the CompilerThreads | |
1783 | 782 init_compiler_threads(c1_count, c2_count); |
0 | 783 // totalTime performance counter is always created as it is required |
784 // by the implementation of java.lang.management.CompilationMBean. | |
785 { | |
786 EXCEPTION_MARK; | |
787 _perf_total_compilation = | |
788 PerfDataManager::create_counter(JAVA_CI, "totalTime", | |
789 PerfData::U_Ticks, CHECK); | |
790 } | |
791 | |
792 | |
793 if (UsePerfData) { | |
794 | |
795 EXCEPTION_MARK; | |
796 | |
797 // create the jvmstat performance counters | |
798 _perf_osr_compilation = | |
799 PerfDataManager::create_counter(SUN_CI, "osrTime", | |
800 PerfData::U_Ticks, CHECK); | |
801 | |
802 _perf_standard_compilation = | |
803 PerfDataManager::create_counter(SUN_CI, "standardTime", | |
804 PerfData::U_Ticks, CHECK); | |
805 | |
806 _perf_total_bailout_count = | |
807 PerfDataManager::create_counter(SUN_CI, "totalBailouts", | |
808 PerfData::U_Events, CHECK); | |
809 | |
810 _perf_total_invalidated_count = | |
811 PerfDataManager::create_counter(SUN_CI, "totalInvalidates", | |
812 PerfData::U_Events, CHECK); | |
813 | |
814 _perf_total_compile_count = | |
815 PerfDataManager::create_counter(SUN_CI, "totalCompiles", | |
816 PerfData::U_Events, CHECK); | |
817 _perf_total_osr_compile_count = | |
818 PerfDataManager::create_counter(SUN_CI, "osrCompiles", | |
819 PerfData::U_Events, CHECK); | |
820 | |
821 _perf_total_standard_compile_count = | |
822 PerfDataManager::create_counter(SUN_CI, "standardCompiles", | |
823 PerfData::U_Events, CHECK); | |
824 | |
825 _perf_sum_osr_bytes_compiled = | |
826 PerfDataManager::create_counter(SUN_CI, "osrBytes", | |
827 PerfData::U_Bytes, CHECK); | |
828 | |
829 _perf_sum_standard_bytes_compiled = | |
830 PerfDataManager::create_counter(SUN_CI, "standardBytes", | |
831 PerfData::U_Bytes, CHECK); | |
832 | |
833 _perf_sum_nmethod_size = | |
834 PerfDataManager::create_counter(SUN_CI, "nmethodSize", | |
835 PerfData::U_Bytes, CHECK); | |
836 | |
837 _perf_sum_nmethod_code_size = | |
838 PerfDataManager::create_counter(SUN_CI, "nmethodCodeSize", | |
839 PerfData::U_Bytes, CHECK); | |
840 | |
841 _perf_last_method = | |
842 PerfDataManager::create_string_variable(SUN_CI, "lastMethod", | |
843 CompilerCounters::cmname_buffer_length, | |
844 "", CHECK); | |
845 | |
846 _perf_last_failed_method = | |
847 PerfDataManager::create_string_variable(SUN_CI, "lastFailedMethod", | |
848 CompilerCounters::cmname_buffer_length, | |
849 "", CHECK); | |
850 | |
851 _perf_last_invalidated_method = | |
852 PerfDataManager::create_string_variable(SUN_CI, "lastInvalidatedMethod", | |
853 CompilerCounters::cmname_buffer_length, | |
854 "", CHECK); | |
855 | |
856 _perf_last_compile_type = | |
857 PerfDataManager::create_variable(SUN_CI, "lastType", | |
858 PerfData::U_None, | |
859 (jlong)CompileBroker::no_compile, | |
860 CHECK); | |
861 | |
862 _perf_last_compile_size = | |
863 PerfDataManager::create_variable(SUN_CI, "lastSize", | |
864 PerfData::U_Bytes, | |
865 (jlong)CompileBroker::no_compile, | |
866 CHECK); | |
867 | |
868 | |
869 _perf_last_failed_type = | |
870 PerfDataManager::create_variable(SUN_CI, "lastFailedType", | |
871 PerfData::U_None, | |
872 (jlong)CompileBroker::no_compile, | |
873 CHECK); | |
874 | |
875 _perf_last_invalidated_type = | |
876 PerfDataManager::create_variable(SUN_CI, "lastInvalidatedType", | |
877 PerfData::U_None, | |
878 (jlong)CompileBroker::no_compile, | |
879 CHECK); | |
880 } | |
881 | |
882 _initialized = true; | |
883 } | |
884 | |
885 | |
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886 CompilerThread* CompileBroker::make_compiler_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, |
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887 AbstractCompiler* comp, TRAPS) { |
0 | 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, | |
2177
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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", | |
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925 os::native_thread_creation_failed_msg()); |
0 | 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()); | |
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954 compiler_thread->set_compiler(comp); |
0 | 955 Threads::add(compiler_thread); |
956 Thread::start(compiler_thread); | |
957 } | |
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958 |
0 | 959 // Let go of Threads_lock before yielding |
960 os::yield(); // make sure that the compiler thread is started early (especially helpful on SOLARIS) | |
961 | |
962 return compiler_thread; | |
963 } | |
964 | |
965 | |
1783 | 966 void CompileBroker::init_compiler_threads(int c1_compiler_count, int c2_compiler_count) { |
0 | 967 EXCEPTION_MARK; |
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968 #if !defined(ZERO) && !defined(SHARK) |
1783 | 969 assert(c2_compiler_count > 0 || c1_compiler_count > 0, "No compilers?"); |
2447 | 970 #endif // !ZERO && !SHARK |
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971 // Initialize the compilation queue |
1783 | 972 if (c2_compiler_count > 0) { |
973 _c2_method_queue = new CompileQueue("C2MethodQueue", MethodCompileQueue_lock); | |
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974 _compilers[1]->set_num_compiler_threads(c2_compiler_count); |
1783 | 975 } |
976 if (c1_compiler_count > 0) { | |
977 _c1_method_queue = new CompileQueue("C1MethodQueue", MethodCompileQueue_lock); | |
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978 _compilers[0]->set_num_compiler_threads(c1_compiler_count); |
1783 | 979 } |
0 | 980 |
1783 | 981 int compiler_count = c1_compiler_count + c2_compiler_count; |
982 | |
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983 _compiler_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); |
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991 // Shark and C2 |
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992 CompilerThread* new_thread = make_compiler_thread(name_buffer, _c2_method_queue, counters, _compilers[1], CHECK); |
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993 _compiler_threads->append(new_thread); |
0 | 994 } |
1783 | 995 |
996 for (int i = c2_compiler_count; i < compiler_count; i++) { | |
997 // Create a name for our thread. | |
998 sprintf(name_buffer, "C1 CompilerThread%d", i); | |
999 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK); | |
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1000 // C1 |
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1001 CompilerThread* new_thread = make_compiler_thread(name_buffer, _c1_method_queue, counters, _compilers[0], CHECK); |
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1002 _compiler_threads->append(new_thread); |
1783 | 1003 } |
1004 | |
0 | 1005 if (UsePerfData) { |
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1006 PerfDataManager::create_constant(SUN_CI, "threads", PerfData::U_Bytes, compiler_count, CHECK); |
0 | 1007 } |
1008 } | |
1009 | |
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1010 |
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1011 // Set the methods on the stack as on_stack so that redefine classes doesn't |
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1012 // reclaim them |
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1013 void CompileBroker::mark_on_stack() { |
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1014 if (_c2_method_queue != NULL) { |
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1015 _c2_method_queue->mark_on_stack(); |
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1016 } |
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1017 if (_c1_method_queue != NULL) { |
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1018 _c1_method_queue->mark_on_stack(); |
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1019 } |
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1020 } |
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1021 |
0 | 1022 // ------------------------------------------------------------------ |
1023 // CompileBroker::compile_method | |
1024 // | |
1025 // Request compilation of a method. | |
1026 void CompileBroker::compile_method_base(methodHandle method, | |
1027 int osr_bci, | |
1028 int comp_level, | |
1029 methodHandle hot_method, | |
1030 int hot_count, | |
1031 const char* comment, | |
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1032 Thread* thread) { |
0 | 1033 // do nothing if compiler thread(s) is not available |
1034 if (!_initialized ) { | |
1035 return; | |
1036 } | |
1037 | |
1038 guarantee(!method->is_abstract(), "cannot compile abstract methods"); | |
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1039 assert(method->method_holder()->oop_is_instance(), |
0 | 1040 "sanity check"); |
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1041 assert(!method->method_holder()->is_not_initialized(), |
0 | 1042 "method holder must be initialized"); |
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1043 assert(!method->is_method_handle_intrinsic(), "do not enqueue these guys"); |
0 | 1044 |
1045 if (CIPrintRequests) { | |
1046 tty->print("request: "); | |
1047 method->print_short_name(tty); | |
1048 if (osr_bci != InvocationEntryBci) { | |
1049 tty->print(" osr_bci: %d", osr_bci); | |
1050 } | |
1051 tty->print(" comment: %s count: %d", comment, hot_count); | |
1052 if (!hot_method.is_null()) { | |
1053 tty->print(" hot: "); | |
1054 if (hot_method() != method()) { | |
1055 hot_method->print_short_name(tty); | |
1056 } else { | |
1057 tty->print("yes"); | |
1058 } | |
1059 } | |
1060 tty->cr(); | |
1061 } | |
1062 | |
1063 // A request has been made for compilation. Before we do any | |
1064 // real work, check to see if the method has been compiled | |
1065 // in the meantime with a definitive result. | |
1066 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
1067 return; | |
1068 } | |
1069 | |
2403 | 1070 #ifndef PRODUCT |
1071 if (osr_bci != -1 && !FLAG_IS_DEFAULT(OSROnlyBCI)) { | |
1072 if ((OSROnlyBCI > 0) ? (OSROnlyBCI != osr_bci) : (-OSROnlyBCI == osr_bci)) { | |
1073 // Positive OSROnlyBCI means only compile that bci. Negative means don't compile that BCI. | |
1074 return; | |
1075 } | |
1076 } | |
1077 #endif | |
1783 | 1078 |
0 | 1079 // If this method is already in the compile queue, then |
1080 // we do not block the current thread. | |
1081 if (compilation_is_in_queue(method, osr_bci)) { | |
1082 // We may want to decay our counter a bit here to prevent | |
1083 // multiple denied requests for compilation. This is an | |
1084 // open compilation policy issue. Note: The other possibility, | |
1085 // in the case that this is a blocking compile request, is to have | |
1086 // all subsequent blocking requesters wait for completion of | |
1087 // ongoing compiles. Note that in this case we'll need a protocol | |
1088 // for freeing the associated compile tasks. [Or we could have | |
1089 // a single static monitor on which all these waiters sleep.] | |
1090 return; | |
1091 } | |
1092 | |
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1093 // If the requesting thread is holding the pending list lock |
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1094 // then we just return. We can't risk blocking while holding |
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1095 // the pending list lock or a 3-way deadlock may occur |
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1096 // between the reference handler thread, a GC (instigated |
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1097 // by a compiler thread), and compiled method registration. |
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1098 if (InstanceRefKlass::owns_pending_list_lock(JavaThread::current())) { |
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1099 return; |
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1100 } |
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1101 |
0 | 1102 // Outputs from the following MutexLocker block: |
1103 CompileTask* task = NULL; | |
1104 bool blocking = false; | |
1783 | 1105 CompileQueue* queue = compile_queue(comp_level); |
0 | 1106 |
1107 // Acquire our lock. | |
1108 { | |
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1109 MutexLocker locker(queue->lock(), thread); |
0 | 1110 |
1111 // Make sure the method has not slipped into the queues since | |
1112 // last we checked; note that those checks were "fast bail-outs". | |
1113 // Here we need to be more careful, see 14012000 below. | |
1114 if (compilation_is_in_queue(method, osr_bci)) { | |
1115 return; | |
1116 } | |
1117 | |
1118 // We need to check again to see if the compilation has | |
1119 // completed. A previous compilation may have registered | |
1120 // some result. | |
1121 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
1122 return; | |
1123 } | |
1124 | |
1125 // We now know that this compilation is not pending, complete, | |
1126 // or prohibited. Assign a compile_id to this compilation | |
1127 // and check to see if it is in our [Start..Stop) range. | |
14236 | 1128 int compile_id = assign_compile_id(method, osr_bci); |
0 | 1129 if (compile_id == 0) { |
1130 // The compilation falls outside the allowed range. | |
1131 return; | |
1132 } | |
1133 | |
1134 // Should this thread wait for completion of the compile? | |
1135 blocking = is_compile_blocking(method, osr_bci); | |
1136 | |
1137 // We will enter the compilation in the queue. | |
1138 // 14012000: Note that this sets the queued_for_compile bits in | |
1139 // the target method. We can now reason that a method cannot be | |
1140 // queued for compilation more than once, as follows: | |
1141 // Before a thread queues a task for compilation, it first acquires | |
1142 // the compile queue lock, then checks if the method's queued bits | |
1143 // are set or it has already been compiled. Thus there can not be two | |
1144 // instances of a compilation task for the same method on the | |
1145 // compilation queue. Consider now the case where the compilation | |
1146 // thread has already removed a task for that method from the queue | |
1147 // and is in the midst of compiling it. In this case, the | |
1148 // queued_for_compile bits must be set in the method (and these | |
1149 // will be visible to the current thread, since the bits were set | |
1150 // under protection of the compile queue lock, which we hold now. | |
1151 // When the compilation completes, the compiler thread first sets | |
1152 // the compilation result and then clears the queued_for_compile | |
1153 // bits. Neither of these actions are protected by a barrier (or done | |
1154 // under the protection of a lock), so the only guarantee we have | |
1155 // (on machines with TSO (Total Store Order)) is that these values | |
1156 // will update in that order. As a result, the only combinations of | |
1157 // these bits that the current thread will see are, in temporal order: | |
1158 // <RESULT, QUEUE> : | |
1159 // <0, 1> : in compile queue, but not yet compiled | |
1160 // <1, 1> : compiled but queue bit not cleared | |
1161 // <1, 0> : compiled and queue bit cleared | |
1162 // Because we first check the queue bits then check the result bits, | |
1163 // we are assured that we cannot introduce a duplicate task. | |
1164 // Note that if we did the tests in the reverse order (i.e. check | |
1165 // result then check queued bit), we could get the result bit before | |
1166 // the compilation completed, and the queue bit after the compilation | |
1167 // completed, and end up introducing a "duplicate" (redundant) task. | |
1168 // In that case, the compiler thread should first check if a method | |
1169 // has already been compiled before trying to compile it. | |
1170 // NOTE: in the event that there are multiple compiler threads and | |
1171 // there is de-optimization/recompilation, things will get hairy, | |
1172 // and in that case it's best to protect both the testing (here) of | |
1173 // these bits, and their updating (here and elsewhere) under a | |
1174 // common lock. | |
1783 | 1175 task = create_compile_task(queue, |
0 | 1176 compile_id, method, |
1177 osr_bci, comp_level, | |
1178 hot_method, hot_count, comment, | |
1179 blocking); | |
1180 } | |
1181 | |
1182 if (blocking) { | |
1183 wait_for_completion(task); | |
1184 } | |
1185 } | |
1186 | |
1187 | |
1188 nmethod* CompileBroker::compile_method(methodHandle method, int osr_bci, | |
1783 | 1189 int comp_level, |
0 | 1190 methodHandle hot_method, int hot_count, |
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1191 const char* comment, Thread* THREAD) { |
0 | 1192 // make sure arguments make sense |
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1193 assert(method->method_holder()->oop_is_instance(), "not an instance method"); |
0 | 1194 assert(osr_bci == InvocationEntryBci || (0 <= osr_bci && osr_bci < method->code_size()), "bci out of range"); |
1195 assert(!method->is_abstract() && (osr_bci == InvocationEntryBci || !method->is_native()), "cannot compile abstract/native methods"); | |
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1196 assert(!method->method_holder()->is_not_initialized(), "method holder must be initialized"); |
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1197 // allow any levels for WhiteBox |
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1198 assert(WhiteBoxAPI || TieredCompilation || comp_level == CompLevel_highest_tier, "only CompLevel_highest_tier must be used in non-tiered"); |
0 | 1199 // return quickly if possible |
1200 | |
1201 // lock, make sure that the compilation | |
1202 // isn't prohibited in a straightforward way. | |
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1203 AbstractCompiler *comp = CompileBroker::compiler(comp_level); |
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1204 if (comp == NULL || !comp->can_compile_method(method) || |
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1205 compilation_is_prohibited(method, osr_bci, comp_level)) { |
0 | 1206 return NULL; |
1207 } | |
1208 | |
1209 if (osr_bci == InvocationEntryBci) { | |
1210 // standard compilation | |
1211 nmethod* method_code = method->code(); | |
1783 | 1212 if (method_code != NULL) { |
1213 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
1214 return method_code; | |
1215 } | |
0 | 1216 } |
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1217 if (method->is_not_compilable(comp_level)) { |
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1218 return NULL; |
1202 | 1219 } |
0 | 1220 } else { |
1221 // osr compilation | |
1222 #ifndef TIERED | |
1223 // seems like an assert of dubious value | |
1783 | 1224 assert(comp_level == CompLevel_highest_tier, |
0 | 1225 "all OSR compiles are assumed to be at a single compilation lavel"); |
1226 #endif // TIERED | |
1783 | 1227 // We accept a higher level osr method |
1228 nmethod* nm = method->lookup_osr_nmethod_for(osr_bci, comp_level, false); | |
0 | 1229 if (nm != NULL) return nm; |
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1230 if (method->is_not_osr_compilable(comp_level)) return NULL; |
0 | 1231 } |
1232 | |
1233 assert(!HAS_PENDING_EXCEPTION, "No exception should be present"); | |
1234 // some prerequisites that are compiler specific | |
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1235 if (comp->is_c2() || comp->is_shark()) { |
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1236 method->constants()->resolve_string_constants(CHECK_AND_CLEAR_NULL); |
0 | 1237 // Resolve all classes seen in the signature of the method |
1238 // we are compiling. | |
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1239 Method::load_signature_classes(method, CHECK_AND_CLEAR_NULL); |
0 | 1240 } |
1241 | |
1242 // If the method is native, do the lookup in the thread requesting | |
1243 // the compilation. Native lookups can load code, which is not | |
1244 // permitted during compilation. | |
1245 // | |
1246 // Note: A native method implies non-osr compilation which is | |
1247 // checked with an assertion at the entry of this method. | |
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1248 if (method->is_native() && !method->is_method_handle_intrinsic()) { |
0 | 1249 bool in_base_library; |
1250 address adr = NativeLookup::lookup(method, in_base_library, THREAD); | |
1251 if (HAS_PENDING_EXCEPTION) { | |
1252 // In case of an exception looking up the method, we just forget | |
1253 // about it. The interpreter will kick-in and throw the exception. | |
1254 method->set_not_compilable(); // implies is_not_osr_compilable() | |
1255 CLEAR_PENDING_EXCEPTION; | |
1256 return NULL; | |
1257 } | |
1258 assert(method->has_native_function(), "must have native code by now"); | |
1259 } | |
1260 | |
1261 // RedefineClasses() has replaced this method; just return | |
1262 if (method->is_old()) { | |
1263 return NULL; | |
1264 } | |
1265 | |
1266 // JVMTI -- post_compile_event requires jmethod_id() that may require | |
1267 // a lock the compiling thread can not acquire. Prefetch it here. | |
1268 if (JvmtiExport::should_post_compiled_method_load()) { | |
1269 method->jmethod_id(); | |
1270 } | |
1271 | |
1272 // do the compilation | |
1273 if (method->is_native()) { | |
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1274 if (!PreferInterpreterNativeStubs || method->is_method_handle_intrinsic()) { |
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1275 // To properly handle the appendix argument for out-of-line calls we are using a small trampoline that |
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1276 // pops off the appendix argument and jumps to the target (see gen_special_dispatch in SharedRuntime). |
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1277 // |
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1278 // Since normal compiled-to-compiled calls are not able to handle such a thing we MUST generate an adapter |
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1279 // in this case. If we can't generate one and use it we can not execute the out-of-line method handle calls. |
14236 | 1280 AdapterHandlerLibrary::create_native_wrapper(method); |
0 | 1281 } else { |
1282 return NULL; | |
1283 } | |
1284 } else { | |
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1285 // If the compiler is shut off due to code cache getting full |
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1286 // fail out now so blocking compiles dont hang the java thread |
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1287 if (!should_compile_new_jobs()) { |
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1288 CompilationPolicy::policy()->delay_compilation(method()); |
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1289 return NULL; |
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1290 } |
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1291 compile_method_base(method, osr_bci, comp_level, hot_method, hot_count, comment, THREAD); |
0 | 1292 } |
1293 | |
1294 // return requested nmethod | |
1783 | 1295 // We accept a higher level osr method |
1296 return osr_bci == InvocationEntryBci ? method->code() : method->lookup_osr_nmethod_for(osr_bci, comp_level, false); | |
0 | 1297 } |
1298 | |
1299 | |
1300 // ------------------------------------------------------------------ | |
1301 // CompileBroker::compilation_is_complete | |
1302 // | |
1303 // See if compilation of this method is already complete. | |
1304 bool CompileBroker::compilation_is_complete(methodHandle method, | |
1305 int osr_bci, | |
1306 int comp_level) { | |
1307 bool is_osr = (osr_bci != standard_entry_bci); | |
1308 if (is_osr) { | |
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1309 if (method->is_not_osr_compilable(comp_level)) { |
0 | 1310 return true; |
1311 } else { | |
1783 | 1312 nmethod* result = method->lookup_osr_nmethod_for(osr_bci, comp_level, true); |
0 | 1313 return (result != NULL); |
1314 } | |
1315 } else { | |
1316 if (method->is_not_compilable(comp_level)) { | |
1317 return true; | |
1318 } else { | |
1319 nmethod* result = method->code(); | |
1320 if (result == NULL) return false; | |
1783 | 1321 return comp_level == result->comp_level(); |
0 | 1322 } |
1323 } | |
1324 } | |
1325 | |
1326 | |
1327 // ------------------------------------------------------------------ | |
1328 // CompileBroker::compilation_is_in_queue | |
1329 // | |
1330 // See if this compilation is already requested. | |
1331 // | |
1332 // Implementation note: there is only a single "is in queue" bit | |
1333 // for each method. This means that the check below is overly | |
1334 // conservative in the sense that an osr compilation in the queue | |
1335 // will block a normal compilation from entering the queue (and vice | |
1336 // versa). This can be remedied by a full queue search to disambiguate | |
1337 // cases. If it is deemed profitible, this may be done. | |
1338 bool CompileBroker::compilation_is_in_queue(methodHandle method, | |
1783 | 1339 int osr_bci) { |
0 | 1340 return method->queued_for_compilation(); |
1341 } | |
1342 | |
1343 // ------------------------------------------------------------------ | |
1344 // CompileBroker::compilation_is_prohibited | |
1345 // | |
1346 // See if this compilation is not allowed. | |
1347 bool CompileBroker::compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level) { | |
1348 bool is_native = method->is_native(); | |
1349 // Some compilers may not support the compilation of natives. | |
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1350 AbstractCompiler *comp = compiler(comp_level); |
0 | 1351 if (is_native && |
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1352 (!CICompileNatives || comp == NULL || !comp->supports_native())) { |
1783 | 1353 method->set_not_compilable_quietly(comp_level); |
0 | 1354 return true; |
1355 } | |
1356 | |
1357 bool is_osr = (osr_bci != standard_entry_bci); | |
1358 // Some compilers may not support on stack replacement. | |
1359 if (is_osr && | |
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1360 (!CICompileOSR || comp == NULL || !comp->supports_osr())) { |
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1361 method->set_not_osr_compilable(comp_level); |
0 | 1362 return true; |
1363 } | |
1364 | |
1365 // The method may be explicitly excluded by the user. | |
1366 bool quietly; | |
1367 if (CompilerOracle::should_exclude(method, quietly)) { | |
1368 if (!quietly) { | |
1369 // This does not happen quietly... | |
1370 ResourceMark rm; | |
1371 tty->print("### Excluding %s:%s", | |
1372 method->is_native() ? "generation of native wrapper" : "compile", | |
1373 (method->is_static() ? " static" : "")); | |
1374 method->print_short_name(tty); | |
1375 tty->cr(); | |
1376 } | |
7998 | 1377 method->set_not_compilable(CompLevel_all, !quietly, "excluded by CompilerOracle"); |
0 | 1378 } |
1379 | |
1380 return false; | |
1381 } | |
1382 | |
14236 | 1383 /** |
1384 * Generate serialized IDs for compilation requests. If certain debugging flags are used | |
1385 * and the ID is not within the specified range, the method is not compiled and 0 is returned. | |
1386 * The function also allows to generate separate compilation IDs for OSR compilations. | |
1387 */ | |
1388 int CompileBroker::assign_compile_id(methodHandle method, int osr_bci) { | |
1389 #ifdef ASSERT | |
0 | 1390 bool is_osr = (osr_bci != standard_entry_bci); |
14236 | 1391 int id; |
1392 if (method->is_native()) { | |
1393 assert(!is_osr, "can't be osr"); | |
1394 // Adapters, native wrappers and method handle intrinsics | |
1395 // should be generated always. | |
1396 return Atomic::add(1, &_compilation_id); | |
1397 } else if (CICountOSR && is_osr) { | |
1398 id = Atomic::add(1, &_osr_compilation_id); | |
1399 if (CIStartOSR <= id && id < CIStopOSR) { | |
0 | 1400 return id; |
1401 } | |
1402 } else { | |
14236 | 1403 id = Atomic::add(1, &_compilation_id); |
1404 if (CIStart <= id && id < CIStop) { | |
0 | 1405 return id; |
1406 } | |
1407 } | |
1408 | |
1409 // Method was not in the appropriate compilation range. | |
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1410 method->set_not_compilable_quietly(); |
0 | 1411 return 0; |
14236 | 1412 #else |
1413 // CICountOSR is a develop flag and set to 'false' by default. In a product built, | |
1414 // only _compilation_id is incremented. | |
1415 return Atomic::add(1, &_compilation_id); | |
1416 #endif | |
0 | 1417 } |
1418 | |
1419 | |
1420 // ------------------------------------------------------------------ | |
1421 // CompileBroker::is_compile_blocking | |
1422 // | |
1423 // Should the current thread be blocked until this compilation request | |
1424 // has been fulfilled? | |
1425 bool CompileBroker::is_compile_blocking(methodHandle method, int osr_bci) { | |
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1426 assert(!InstanceRefKlass::owns_pending_list_lock(JavaThread::current()), "possible deadlock"); |
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1427 return !BackgroundCompilation; |
0 | 1428 } |
1429 | |
1430 | |
1431 // ------------------------------------------------------------------ | |
1432 // CompileBroker::preload_classes | |
1433 void CompileBroker::preload_classes(methodHandle method, TRAPS) { | |
1434 // Move this code over from c1_Compiler.cpp | |
1435 ShouldNotReachHere(); | |
1436 } | |
1437 | |
1438 | |
1439 // ------------------------------------------------------------------ | |
1440 // CompileBroker::create_compile_task | |
1441 // | |
1442 // Create a CompileTask object representing the current request for | |
1443 // compilation. Add this task to the queue. | |
1444 CompileTask* CompileBroker::create_compile_task(CompileQueue* queue, | |
1445 int compile_id, | |
1446 methodHandle method, | |
1447 int osr_bci, | |
1448 int comp_level, | |
1449 methodHandle hot_method, | |
1450 int hot_count, | |
1451 const char* comment, | |
1452 bool blocking) { | |
1453 CompileTask* new_task = allocate_task(); | |
1454 new_task->initialize(compile_id, method, osr_bci, comp_level, | |
1455 hot_method, hot_count, comment, | |
1456 blocking); | |
1457 queue->add(new_task); | |
1458 return new_task; | |
1459 } | |
1460 | |
1461 | |
1462 // ------------------------------------------------------------------ | |
1463 // CompileBroker::allocate_task | |
1464 // | |
1465 // Allocate a CompileTask, from the free list if possible. | |
1466 CompileTask* CompileBroker::allocate_task() { | |
1467 MutexLocker locker(CompileTaskAlloc_lock); | |
1468 CompileTask* task = NULL; | |
1469 if (_task_free_list != NULL) { | |
1470 task = _task_free_list; | |
1471 _task_free_list = task->next(); | |
1472 task->set_next(NULL); | |
1473 } else { | |
1474 task = new CompileTask(); | |
1475 task->set_next(NULL); | |
1476 } | |
1477 return task; | |
1478 } | |
1479 | |
1480 | |
1481 // ------------------------------------------------------------------ | |
1482 // CompileBroker::free_task | |
1483 // | |
1484 // Add a task to the free list. | |
1485 void CompileBroker::free_task(CompileTask* task) { | |
1486 MutexLocker locker(CompileTaskAlloc_lock); | |
1487 task->free(); | |
1488 task->set_next(_task_free_list); | |
1489 _task_free_list = task; | |
1490 } | |
1491 | |
1492 | |
1493 // ------------------------------------------------------------------ | |
1494 // CompileBroker::wait_for_completion | |
1495 // | |
1496 // Wait for the given method CompileTask to complete. | |
1497 void CompileBroker::wait_for_completion(CompileTask* task) { | |
1498 if (CIPrintCompileQueue) { | |
1499 tty->print_cr("BLOCKING FOR COMPILE"); | |
1500 } | |
1501 | |
1502 assert(task->is_blocking(), "can only wait on blocking task"); | |
1503 | |
1504 JavaThread *thread = JavaThread::current(); | |
1505 thread->set_blocked_on_compilation(true); | |
1506 | |
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1507 methodHandle method(thread, task->method()); |
0 | 1508 { |
1509 MutexLocker waiter(task->lock(), thread); | |
1510 | |
1511 while (!task->is_complete()) | |
1512 task->lock()->wait(); | |
1513 } | |
1514 // It is harmless to check this status without the lock, because | |
1515 // completion is a stable property (until the task object is recycled). | |
1516 assert(task->is_complete(), "Compilation should have completed"); | |
1517 assert(task->code_handle() == NULL, "must be reset"); | |
1518 | |
1519 thread->set_blocked_on_compilation(false); | |
1520 | |
1521 // By convention, the waiter is responsible for recycling a | |
1522 // blocking CompileTask. Since there is only one waiter ever | |
1523 // waiting on a CompileTask, we know that no one else will | |
1524 // be using this CompileTask; we can free it. | |
1525 free_task(task); | |
1526 } | |
1527 | |
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1528 // Initialize compiler thread(s) + compiler object(s). The postcondition |
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1529 // of this function is that the compiler runtimes are initialized and that |
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1530 //compiler threads can start compiling. |
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1531 bool CompileBroker::init_compiler_runtime() { |
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1532 CompilerThread* thread = CompilerThread::current(); |
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1533 AbstractCompiler* comp = thread->compiler(); |
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1534 // Final sanity check - the compiler object must exist |
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1535 guarantee(comp != NULL, "Compiler object must exist"); |
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1536 |
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1537 int system_dictionary_modification_counter; |
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1538 { |
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1539 MutexLocker locker(Compile_lock, thread); |
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1540 system_dictionary_modification_counter = SystemDictionary::number_of_modifications(); |
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1541 } |
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1542 |
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1543 { |
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1544 // Must switch to native to allocate ci_env |
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1545 ThreadToNativeFromVM ttn(thread); |
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1546 ciEnv ci_env(NULL, system_dictionary_modification_counter); |
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1547 // Cache Jvmti state |
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1548 ci_env.cache_jvmti_state(); |
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1549 // Cache DTrace flags |
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1550 ci_env.cache_dtrace_flags(); |
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1551 |
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1552 // Switch back to VM state to do compiler initialization |
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1553 ThreadInVMfromNative tv(thread); |
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1554 ResetNoHandleMark rnhm; |
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1555 |
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1556 |
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1557 if (!comp->is_shark()) { |
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1558 // Perform per-thread and global initializations |
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1559 comp->initialize(); |
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1560 } |
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1561 } |
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1562 |
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1563 if (comp->is_failed()) { |
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1564 disable_compilation_forever(); |
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1565 // If compiler initialization failed, no compiler thread that is specific to a |
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1566 // particular compiler runtime will ever start to compile methods. |
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1567 |
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1568 shutdown_compiler_runtime(comp, thread); |
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1569 return false; |
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1570 } |
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1571 |
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1572 // C1 specific check |
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1573 if (comp->is_c1() && (thread->get_buffer_blob() == NULL)) { |
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1574 warning("Initialization of %s thread failed (no space to run compilers)", thread->name()); |
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1575 return false; |
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1576 } |
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1577 |
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1578 return true; |
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1579 } |
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1580 |
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1581 // If C1 and/or C2 initialization failed, we shut down all compilation. |
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1582 // We do this to keep things simple. This can be changed if it ever turns out to be |
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1583 // a problem. |
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1584 void CompileBroker::shutdown_compiler_runtime(AbstractCompiler* comp, CompilerThread* thread) { |
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1585 // Free buffer blob, if allocated |
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1586 if (thread->get_buffer_blob() != NULL) { |
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1587 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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1588 CodeCache::free(thread->get_buffer_blob()); |
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1589 } |
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1590 |
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1591 if (comp->should_perform_shutdown()) { |
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1592 // There are two reasons for shutting down the compiler |
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1593 // 1) compiler runtime initialization failed |
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1594 // 2) The code cache is full and the following flag is set: -XX:-UseCodeCacheFlushing |
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1595 warning("Shutting down compiler %s (no space to run compilers)", comp->name()); |
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1596 |
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1597 // Only one thread per compiler runtime object enters here |
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1598 // Set state to shut down |
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1599 comp->set_shut_down(); |
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1600 |
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1601 MutexLocker mu(MethodCompileQueue_lock, thread); |
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1602 CompileQueue* queue; |
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1603 if (_c1_method_queue != NULL) { |
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1604 _c1_method_queue->delete_all(); |
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1605 queue = _c1_method_queue; |
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1606 _c1_method_queue = NULL; |
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1607 delete _c1_method_queue; |
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1608 } |
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1609 |
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1610 if (_c2_method_queue != NULL) { |
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1611 _c2_method_queue->delete_all(); |
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1612 queue = _c2_method_queue; |
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1613 _c2_method_queue = NULL; |
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1614 delete _c2_method_queue; |
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1615 } |
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1616 |
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1617 // We could delete compiler runtimes also. However, there are references to |
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1618 // the compiler runtime(s) (e.g., nmethod::is_compiled_by_c1()) which then |
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1619 // fail. This can be done later if necessary. |
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1620 } |
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1621 } |
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1622 |
0 | 1623 // ------------------------------------------------------------------ |
1624 // CompileBroker::compiler_thread_loop | |
1625 // | |
1626 // The main loop run by a CompilerThread. | |
1627 void CompileBroker::compiler_thread_loop() { | |
1628 CompilerThread* thread = CompilerThread::current(); | |
1629 CompileQueue* queue = thread->queue(); | |
1630 // For the thread that initializes the ciObjectFactory | |
1631 // this resource mark holds all the shared objects | |
1632 ResourceMark rm; | |
1633 | |
1634 // First thread to get here will initialize the compiler interface | |
1635 | |
1636 if (!ciObjectFactory::is_initialized()) { | |
1637 ASSERT_IN_VM; | |
1638 MutexLocker only_one (CompileThread_lock, thread); | |
1639 if (!ciObjectFactory::is_initialized()) { | |
1640 ciObjectFactory::initialize(); | |
1641 } | |
1642 } | |
1643 | |
1644 // Open a log. | |
1645 if (LogCompilation) { | |
1646 init_compiler_thread_log(); | |
1647 } | |
1648 CompileLog* log = thread->log(); | |
1649 if (log != NULL) { | |
6843 | 1650 log->begin_elem("start_compile_thread name='%s' thread='" UINTX_FORMAT "' process='%d'", |
1651 thread->name(), | |
0 | 1652 os::current_thread_id(), |
1653 os::current_process_id()); | |
1654 log->stamp(); | |
1655 log->end_elem(); | |
1656 } | |
1657 | |
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1658 // If compiler thread/runtime initialization fails, exit the compiler thread |
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1659 if (!init_compiler_runtime()) { |
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1660 return; |
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1661 } |
1202 | 1662 |
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1663 // Poll for new compilation tasks as long as the JVM runs. Compilation |
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1664 // should only be disabled if something went wrong while initializing the |
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1665 // compiler runtimes. This, in turn, should not happen. The only known case |
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1666 // when compiler runtime initialization fails is if there is not enough free |
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1667 // space in the code cache to generate the necessary stubs, etc. |
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1668 while (!is_compilation_disabled_forever()) { |
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1669 // We need this HandleMark to avoid leaking VM handles. |
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1670 HandleMark hm(thread); |
0 | 1671 |
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1672 if (CodeCache::unallocated_capacity() < CodeCacheMinimumFreeSpace) { |
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1673 // the code cache is really full |
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1674 handle_full_code_cache(); |
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1675 } |
0 | 1676 |
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1677 CompileTask* task = queue->get(); |
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1678 if (task == NULL) { |
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1679 continue; |
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1680 } |
0 | 1681 |
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1682 // Give compiler threads an extra quanta. They tend to be bursty and |
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1683 // this helps the compiler to finish up the job. |
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1684 if( CompilerThreadHintNoPreempt ) |
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1685 os::hint_no_preempt(); |
0 | 1686 |
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1687 // trace per thread time and compile statistics |
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1688 CompilerCounters* counters = ((CompilerThread*)thread)->counters(); |
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1689 PerfTraceTimedEvent(counters->time_counter(), counters->compile_counter()); |
0 | 1690 |
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1691 // Assign the task to the current thread. Mark this compilation |
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1692 // thread as active for the profiler. |
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1693 CompileTaskWrapper ctw(task); |
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1694 nmethodLocker result_handle; // (handle for the nmethod produced by this task) |
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1695 task->set_code_handle(&result_handle); |
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1696 methodHandle method(thread, task->method()); |
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1697 |
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1698 // Never compile a method if breakpoints are present in it |
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1699 if (method()->number_of_breakpoints() == 0) { |
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1700 // Compile the method. |
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1701 if ((UseCompiler || AlwaysCompileLoopMethods) && CompileBroker::should_compile_new_jobs()) { |
0 | 1702 #ifdef COMPILER1 |
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1703 // Allow repeating compilations for the purpose of benchmarking |
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1704 // compile speed. This is not useful for customers. |
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1705 if (CompilationRepeat != 0) { |
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1706 int compile_count = CompilationRepeat; |
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1707 while (compile_count > 0) { |
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1708 invoke_compiler_on_method(task); |
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1709 nmethod* nm = method->code(); |
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1710 if (nm != NULL) { |
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1711 nm->make_zombie(); |
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1712 method->clear_code(); |
0 | 1713 } |
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1714 compile_count--; |
0 | 1715 } |
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1716 } |
0 | 1717 #endif /* COMPILER1 */ |
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1718 invoke_compiler_on_method(task); |
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1719 } else { |
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1720 // After compilation is disabled, remove remaining methods from queue |
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1721 method->clear_queued_for_compilation(); |
0 | 1722 } |
1723 } | |
1724 } | |
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1725 |
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1726 // Shut down compiler runtime |
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1727 shutdown_compiler_runtime(thread->compiler(), thread); |
0 | 1728 } |
1729 | |
1730 // ------------------------------------------------------------------ | |
1731 // CompileBroker::init_compiler_thread_log | |
1732 // | |
1733 // Set up state required by +LogCompilation. | |
1734 void CompileBroker::init_compiler_thread_log() { | |
1735 CompilerThread* thread = CompilerThread::current(); | |
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1736 char file_name[4*K]; |
0 | 1737 FILE* fp = NULL; |
1738 intx thread_id = os::current_thread_id(); | |
1739 for (int try_temp_dir = 1; try_temp_dir >= 0; try_temp_dir--) { | |
1740 const char* dir = (try_temp_dir ? os::get_temp_directory() : NULL); | |
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1741 if (dir == NULL) { |
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1742 jio_snprintf(file_name, sizeof(file_name), "hs_c" UINTX_FORMAT "_pid%u.log", |
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1743 thread_id, os::current_process_id()); |
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1744 } else { |
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1745 jio_snprintf(file_name, sizeof(file_name), |
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1746 "%s%shs_c" UINTX_FORMAT "_pid%u.log", dir, |
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1747 os::file_separator(), thread_id, os::current_process_id()); |
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1748 } |
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1749 |
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1750 fp = fopen(file_name, "at"); |
0 | 1751 if (fp != NULL) { |
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1752 if (LogCompilation && Verbose) { |
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1753 tty->print_cr("Opening compilation log %s", file_name); |
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1754 } |
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1755 CompileLog* log = new(ResourceObj::C_HEAP, mtCompiler) CompileLog(file_name, fp, thread_id); |
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1756 thread->init_log(log); |
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1757 |
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1758 if (xtty != NULL) { |
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1759 ttyLocker ttyl; |
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1760 // Record any per thread log files |
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1761 xtty->elem("thread_logfile thread='%d' filename='%s'", thread_id, file_name); |
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1762 } |
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1763 return; |
0 | 1764 } |
1765 } | |
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1766 warning("Cannot open log file: %s", file_name); |
0 | 1767 } |
1768 | |
1769 // ------------------------------------------------------------------ | |
1770 // CompileBroker::set_should_block | |
1771 // | |
1772 // Set _should_block. | |
1773 // Call this from the VM, with Threads_lock held and a safepoint requested. | |
1774 void CompileBroker::set_should_block() { | |
1775 assert(Threads_lock->owner() == Thread::current(), "must have threads lock"); | |
1776 assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint already"); | |
1777 #ifndef PRODUCT | |
1778 if (PrintCompilation && (Verbose || WizardMode)) | |
1779 tty->print_cr("notifying compiler thread pool to block"); | |
1780 #endif | |
1781 _should_block = true; | |
1782 } | |
1783 | |
1784 // ------------------------------------------------------------------ | |
1785 // CompileBroker::maybe_block | |
1786 // | |
1787 // Call this from the compiler at convenient points, to poll for _should_block. | |
1788 void CompileBroker::maybe_block() { | |
1789 if (_should_block) { | |
1790 #ifndef PRODUCT | |
1791 if (PrintCompilation && (Verbose || WizardMode)) | |
1792 tty->print_cr("compiler thread " INTPTR_FORMAT " poll detects block request", Thread::current()); | |
1793 #endif | |
1794 ThreadInVMfromNative tivfn(JavaThread::current()); | |
1795 } | |
1796 } | |
1797 | |
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1798 // wrapper for CodeCache::print_summary() |
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1799 static void codecache_print(bool detailed) |
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1800 { |
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1801 ResourceMark rm; |
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1802 stringStream s; |
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1803 // Dump code cache into a buffer before locking the tty, |
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1804 { |
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1805 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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1806 CodeCache::print_summary(&s, detailed); |
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1807 } |
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1808 ttyLocker ttyl; |
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1809 tty->print(s.as_string()); |
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1810 } |
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1811 |
0 | 1812 // ------------------------------------------------------------------ |
1813 // CompileBroker::invoke_compiler_on_method | |
1814 // | |
1815 // Compile a method. | |
1816 // | |
1817 void CompileBroker::invoke_compiler_on_method(CompileTask* task) { | |
1818 if (PrintCompilation) { | |
1819 ResourceMark rm; | |
1820 task->print_line(); | |
1821 } | |
1822 elapsedTimer time; | |
1823 | |
1824 CompilerThread* thread = CompilerThread::current(); | |
1825 ResourceMark rm(thread); | |
1826 | |
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1827 if (LogEvents) { |
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1828 _compilation_log->log_compile(thread, task); |
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1829 } |
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1830 |
0 | 1831 // Common flags. |
1832 uint compile_id = task->compile_id(); | |
1833 int osr_bci = task->osr_bci(); | |
1834 bool is_osr = (osr_bci != standard_entry_bci); | |
1835 bool should_log = (thread->log() != NULL); | |
1836 bool should_break = false; | |
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1837 int task_level = task->comp_level(); |
0 | 1838 { |
1839 // create the handle inside it's own block so it can't | |
1840 // accidentally be referenced once the thread transitions to | |
1841 // native. The NoHandleMark before the transition should catch | |
1842 // any cases where this occurs in the future. | |
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1843 methodHandle method(thread, task->method()); |
0 | 1844 should_break = check_break_at(method, compile_id, is_osr); |
1845 if (should_log && !CompilerOracle::should_log(method)) { | |
1846 should_log = false; | |
1847 } | |
1848 assert(!method->is_native(), "no longer compile natives"); | |
1849 | |
1850 // Save information about this method in case of failure. | |
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1851 set_last_compile(thread, method, is_osr, task_level); |
0 | 1852 |
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1853 DTRACE_METHOD_COMPILE_BEGIN_PROBE(method, compiler_name(task_level)); |
0 | 1854 } |
1855 | |
1856 // Allocate a new set of JNI handles. | |
1857 push_jni_handle_block(); | |
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1858 Method* target_handle = task->method(); |
0 | 1859 int compilable = ciEnv::MethodCompilable; |
1860 { | |
1861 int system_dictionary_modification_counter; | |
1862 { | |
1863 MutexLocker locker(Compile_lock, thread); | |
1864 system_dictionary_modification_counter = SystemDictionary::number_of_modifications(); | |
1865 } | |
1866 | |
1867 NoHandleMark nhm; | |
1868 ThreadToNativeFromVM ttn(thread); | |
1869 | |
1870 ciEnv ci_env(task, system_dictionary_modification_counter); | |
1871 if (should_break) { | |
1872 ci_env.set_break_at_compile(true); | |
1873 } | |
1874 if (should_log) { | |
1875 ci_env.set_log(thread->log()); | |
1876 } | |
1877 assert(thread->env() == &ci_env, "set by ci_env"); | |
1878 // The thread-env() field is cleared in ~CompileTaskWrapper. | |
1879 | |
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1880 // Cache Jvmti state |
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1881 ci_env.cache_jvmti_state(); |
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1882 |
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1883 // Cache DTrace flags |
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1884 ci_env.cache_dtrace_flags(); |
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1885 |
0 | 1886 ciMethod* target = ci_env.get_method_from_handle(target_handle); |
1887 | |
1888 TraceTime t1("compilation", &time); | |
10405 | 1889 EventCompilation event; |
0 | 1890 |
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1891 AbstractCompiler *comp = compiler(task_level); |
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1892 if (comp == NULL) { |
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1893 ci_env.record_method_not_compilable("no compiler", !TieredCompilation); |
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1894 } else { |
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1895 comp->compile_method(&ci_env, target, osr_bci); |
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1896 } |
0 | 1897 |
1898 if (!ci_env.failing() && task->code() == NULL) { | |
1899 //assert(false, "compiler should always document failure"); | |
1900 // The compiler elected, without comment, not to register a result. | |
1901 // Do not attempt further compilations of this method. | |
1964
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1902 ci_env.record_method_not_compilable("compile failed", !TieredCompilation); |
0 | 1903 } |
1904 | |
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1905 // Copy this bit to the enclosing block: |
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1906 compilable = ci_env.compilable(); |
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1907 |
0 | 1908 if (ci_env.failing()) { |
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1909 const char* retry_message = ci_env.retry_message(); |
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1910 if (_compilation_log != NULL) { |
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1911 _compilation_log->log_failure(thread, task, ci_env.failure_reason(), retry_message); |
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1912 } |
0 | 1913 if (PrintCompilation) { |
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1914 FormatBufferResource msg = retry_message != NULL ? |
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1915 err_msg_res("COMPILE SKIPPED: %s (%s)", ci_env.failure_reason(), retry_message) : |
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1916 err_msg_res("COMPILE SKIPPED: %s", ci_env.failure_reason()); |
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1917 task->print_compilation(tty, msg); |
0 | 1918 } |
1919 } else { | |
1920 task->mark_success(); | |
1921 task->set_num_inlined_bytecodes(ci_env.num_inlined_bytecodes()); | |
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1922 if (_compilation_log != NULL) { |
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1923 nmethod* code = task->code(); |
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1924 if (code != NULL) { |
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1925 _compilation_log->log_nmethod(thread, code); |
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1926 } |
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1927 } |
0 | 1928 } |
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1929 // simulate crash during compilation |
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1930 assert(task->compile_id() != CICrashAt, "just as planned"); |
10405 | 1931 if (event.should_commit()) { |
1932 event.set_method(target->get_Method()); | |
1933 event.set_compileID(compile_id); | |
1934 event.set_compileLevel(task->comp_level()); | |
1935 event.set_succeded(task->is_success()); | |
1936 event.set_isOsr(is_osr); | |
1937 event.set_codeSize((task->code() == NULL) ? 0 : task->code()->total_size()); | |
1938 event.set_inlinedBytes(task->num_inlined_bytecodes()); | |
1939 event.commit(); | |
1940 } | |
0 | 1941 } |
1942 pop_jni_handle_block(); | |
1943 | |
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1944 methodHandle method(thread, task->method()); |
0 | 1945 |
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1946 DTRACE_METHOD_COMPILE_END_PROBE(method, compiler_name(task_level), task->is_success()); |
0 | 1947 |
1948 collect_statistics(thread, time, task); | |
1949 | |
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1950 if (PrintCompilation && PrintCompilation2) { |
4047 | 1951 tty->print("%7d ", (int) tty->time_stamp().milliseconds()); // print timestamp |
1952 tty->print("%4d ", compile_id); // print compilation number | |
1953 tty->print("%s ", (is_osr ? "%" : " ")); | |
10278 | 1954 if (task->code() != NULL) { |
1955 tty->print("size: %d(%d) ", task->code()->total_size(), task->code()->insts_size()); | |
1956 } | |
1957 tty->print_cr("time: %d inlined: %d bytes", (int)time.milliseconds(), task->num_inlined_bytecodes()); | |
4047 | 1958 } |
1959 | |
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1960 if (PrintCodeCacheOnCompilation) |
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1961 codecache_print(/* detailed= */ false); |
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1962 |
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1963 // Disable compilation, if required. |
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1964 switch (compilable) { |
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1965 case ciEnv::MethodCompilable_never: |
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1966 if (is_osr) |
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1967 method->set_not_osr_compilable_quietly(); |
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1968 else |
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1969 method->set_not_compilable_quietly(); |
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1970 break; |
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1971 case ciEnv::MethodCompilable_not_at_tier: |
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1972 if (is_osr) |
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1973 method->set_not_osr_compilable_quietly(task_level); |
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1974 else |
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1975 method->set_not_compilable_quietly(task_level); |
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1976 break; |
0 | 1977 } |
1978 | |
1979 // Note that the queued_for_compilation bits are cleared without | |
1980 // protection of a mutex. [They were set by the requester thread, | |
1981 // when adding the task to the complie queue -- at which time the | |
1982 // compile queue lock was held. Subsequently, we acquired the compile | |
1983 // queue lock to get this task off the compile queue; thus (to belabour | |
1984 // the point somewhat) our clearing of the bits must be occurring | |
1985 // only after the setting of the bits. See also 14012000 above. | |
1986 method->clear_queued_for_compilation(); | |
1987 | |
1988 #ifdef ASSERT | |
1989 if (CollectedHeap::fired_fake_oom()) { | |
1990 // The current compile received a fake OOM during compilation so | |
1991 // go ahead and exit the VM since the test apparently succeeded | |
1992 tty->print_cr("*** Shutting down VM after successful fake OOM"); | |
1993 vm_exit(0); | |
1994 } | |
1995 #endif | |
1996 } | |
1997 | |
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1998 /** |
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1999 * The CodeCache is full. Print out warning and disable compilation |
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2000 * or try code cache cleaning so compilation can continue later. |
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2001 */ |
1202 | 2002 void CompileBroker::handle_full_code_cache() { |
2003 UseInterpreter = true; | |
2004 if (UseCompiler || AlwaysCompileLoopMethods ) { | |
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2005 if (xtty != NULL) { |
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2006 ResourceMark rm; |
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2007 stringStream s; |
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2008 // Dump code cache state into a buffer before locking the tty, |
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2009 // because log_state() will use locks causing lock conflicts. |
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|
2010 CodeCache::log_state(&s); |
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2011 // Lock to prevent tearing |
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|
2012 ttyLocker ttyl; |
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2013 xtty->begin_elem("code_cache_full"); |
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2014 xtty->print(s.as_string()); |
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2015 xtty->stamp(); |
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|
2016 xtty->end_elem(); |
1202 | 2017 } |
10405 | 2018 |
2019 CodeCache::report_codemem_full(); | |
2020 | |
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2021 #ifndef PRODUCT |
1202 | 2022 if (CompileTheWorld || ExitOnFullCodeCache) { |
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|
2023 codecache_print(/* detailed= */ true); |
1202 | 2024 before_exit(JavaThread::current()); |
2025 exit_globals(); // will delete tty | |
2026 vm_direct_exit(CompileTheWorld ? 0 : 1); | |
2027 } | |
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2028 #endif |
1202 | 2029 if (UseCodeCacheFlushing) { |
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|
2030 // Since code cache is full, immediately stop new compiles |
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|
2031 if (CompileBroker::set_should_compile_new_jobs(CompileBroker::stop_compilation)) { |
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|
2032 NMethodSweeper::log_sweep("disable_compiler"); |
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|
2033 } |
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|
2034 // Switch to 'vm_state'. This ensures that possibly_sweep() can be called |
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2035 // without having to consider the state in which the current thread is. |
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|
2036 ThreadInVMfromUnknown in_vm; |
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|
2037 NMethodSweeper::possibly_sweep(); |
1202 | 2038 } else { |
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469216acdb28
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12861
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|
2039 disable_compilation_forever(); |
1202 | 2040 } |
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|
2041 |
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2042 // Print warning only once |
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2043 if (should_print_compiler_warning()) { |
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2044 warning("CodeCache is full. Compiler has been disabled."); |
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|
2045 warning("Try increasing the code cache size using -XX:ReservedCodeCacheSize="); |
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2046 codecache_print(/* detailed= */ true); |
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|
2047 } |
1202 | 2048 } |
2049 } | |
2050 | |
2051 // ------------------------------------------------------------------ | |
0 | 2052 // CompileBroker::set_last_compile |
2053 // | |
2054 // Record this compilation for debugging purposes. | |
2055 void CompileBroker::set_last_compile(CompilerThread* thread, methodHandle method, bool is_osr, int comp_level) { | |
2056 ResourceMark rm; | |
2057 char* method_name = method->name()->as_C_string(); | |
2058 strncpy(_last_method_compiled, method_name, CompileBroker::name_buffer_length); | |
2059 char current_method[CompilerCounters::cmname_buffer_length]; | |
2060 size_t maxLen = CompilerCounters::cmname_buffer_length; | |
2061 | |
2062 if (UsePerfData) { | |
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2063 const char* class_name = method->method_holder()->name()->as_C_string(); |
0 | 2064 |
2065 size_t s1len = strlen(class_name); | |
2066 size_t s2len = strlen(method_name); | |
2067 | |
2068 // check if we need to truncate the string | |
2069 if (s1len + s2len + 2 > maxLen) { | |
2070 | |
2071 // the strategy is to lop off the leading characters of the | |
2072 // class name and the trailing characters of the method name. | |
2073 | |
2074 if (s2len + 2 > maxLen) { | |
2075 // lop of the entire class name string, let snprintf handle | |
2076 // truncation of the method name. | |
2077 class_name += s1len; // null string | |
2078 } | |
2079 else { | |
2080 // lop off the extra characters from the front of the class name | |
2081 class_name += ((s1len + s2len + 2) - maxLen); | |
2082 } | |
2083 } | |
2084 | |
2085 jio_snprintf(current_method, maxLen, "%s %s", class_name, method_name); | |
2086 } | |
2087 | |
2088 if (CICountOSR && is_osr) { | |
2089 _last_compile_type = osr_compile; | |
2090 } else { | |
2091 _last_compile_type = normal_compile; | |
2092 } | |
2093 _last_compile_level = comp_level; | |
2094 | |
2095 if (UsePerfData) { | |
2096 CompilerCounters* counters = thread->counters(); | |
2097 counters->set_current_method(current_method); | |
2098 counters->set_compile_type((jlong)_last_compile_type); | |
2099 } | |
2100 } | |
2101 | |
2102 | |
2103 // ------------------------------------------------------------------ | |
2104 // CompileBroker::push_jni_handle_block | |
2105 // | |
2106 // Push on a new block of JNI handles. | |
2107 void CompileBroker::push_jni_handle_block() { | |
2108 JavaThread* thread = JavaThread::current(); | |
2109 | |
2110 // Allocate a new block for JNI handles. | |
2111 // Inlined code from jni_PushLocalFrame() | |
2112 JNIHandleBlock* java_handles = thread->active_handles(); | |
2113 JNIHandleBlock* compile_handles = JNIHandleBlock::allocate_block(thread); | |
2114 assert(compile_handles != NULL && java_handles != NULL, "should not be NULL"); | |
2115 compile_handles->set_pop_frame_link(java_handles); // make sure java handles get gc'd. | |
2116 thread->set_active_handles(compile_handles); | |
2117 } | |
2118 | |
2119 | |
2120 // ------------------------------------------------------------------ | |
2121 // CompileBroker::pop_jni_handle_block | |
2122 // | |
2123 // Pop off the current block of JNI handles. | |
2124 void CompileBroker::pop_jni_handle_block() { | |
2125 JavaThread* thread = JavaThread::current(); | |
2126 | |
2127 // Release our JNI handle block | |
2128 JNIHandleBlock* compile_handles = thread->active_handles(); | |
2129 JNIHandleBlock* java_handles = compile_handles->pop_frame_link(); | |
2130 thread->set_active_handles(java_handles); | |
2131 compile_handles->set_pop_frame_link(NULL); | |
2132 JNIHandleBlock::release_block(compile_handles, thread); // may block | |
2133 } | |
2134 | |
2135 | |
2136 // ------------------------------------------------------------------ | |
2137 // CompileBroker::check_break_at | |
2138 // | |
2139 // Should the compilation break at the current compilation. | |
2140 bool CompileBroker::check_break_at(methodHandle method, int compile_id, bool is_osr) { | |
2141 if (CICountOSR && is_osr && (compile_id == CIBreakAtOSR)) { | |
2142 return true; | |
2143 } else if( CompilerOracle::should_break_at(method) ) { // break when compiling | |
2144 return true; | |
2145 } else { | |
2146 return (compile_id == CIBreakAt); | |
2147 } | |
2148 } | |
2149 | |
2150 // ------------------------------------------------------------------ | |
2151 // CompileBroker::collect_statistics | |
2152 // | |
2153 // Collect statistics about the compilation. | |
2154 | |
2155 void CompileBroker::collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task) { | |
2156 bool success = task->is_success(); | |
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2157 methodHandle method (thread, task->method()); |
0 | 2158 uint compile_id = task->compile_id(); |
2159 bool is_osr = (task->osr_bci() != standard_entry_bci); | |
2160 nmethod* code = task->code(); | |
2161 CompilerCounters* counters = thread->counters(); | |
2162 | |
2163 assert(code == NULL || code->is_locked_by_vm(), "will survive the MutexLocker"); | |
2164 MutexLocker locker(CompileStatistics_lock); | |
2165 | |
2166 // _perf variables are production performance counters which are | |
2167 // updated regardless of the setting of the CITime and CITimeEach flags | |
2168 // | |
2169 if (!success) { | |
2170 _total_bailout_count++; | |
2171 if (UsePerfData) { | |
2172 _perf_last_failed_method->set_value(counters->current_method()); | |
2173 _perf_last_failed_type->set_value(counters->compile_type()); | |
2174 _perf_total_bailout_count->inc(); | |
2175 } | |
2176 } else if (code == NULL) { | |
2177 if (UsePerfData) { | |
2178 _perf_last_invalidated_method->set_value(counters->current_method()); | |
2179 _perf_last_invalidated_type->set_value(counters->compile_type()); | |
2180 _perf_total_invalidated_count->inc(); | |
2181 } | |
2182 _total_invalidated_count++; | |
2183 } else { | |
2184 // Compilation succeeded | |
2185 | |
2186 // update compilation ticks - used by the implementation of | |
2187 // java.lang.management.CompilationMBean | |
2188 _perf_total_compilation->inc(time.ticks()); | |
2189 | |
10405 | 2190 _t_total_compilation.add(time); |
2191 _peak_compilation_time = time.milliseconds() > _peak_compilation_time ? time.milliseconds() : _peak_compilation_time; | |
2192 | |
0 | 2193 if (CITime) { |
2194 if (is_osr) { | |
2195 _t_osr_compilation.add(time); | |
2196 _sum_osr_bytes_compiled += method->code_size() + task->num_inlined_bytecodes(); | |
2197 } else { | |
2198 _t_standard_compilation.add(time); | |
2199 _sum_standard_bytes_compiled += method->code_size() + task->num_inlined_bytecodes(); | |
2200 } | |
2201 } | |
2202 | |
2203 if (UsePerfData) { | |
2204 // save the name of the last method compiled | |
2205 _perf_last_method->set_value(counters->current_method()); | |
2206 _perf_last_compile_type->set_value(counters->compile_type()); | |
2207 _perf_last_compile_size->set_value(method->code_size() + | |
2208 task->num_inlined_bytecodes()); | |
2209 if (is_osr) { | |
2210 _perf_osr_compilation->inc(time.ticks()); | |
2211 _perf_sum_osr_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes()); | |
2212 } else { | |
2213 _perf_standard_compilation->inc(time.ticks()); | |
2214 _perf_sum_standard_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes()); | |
2215 } | |
2216 } | |
2217 | |
2218 if (CITimeEach) { | |
2219 float bytes_per_sec = 1.0 * (method->code_size() + task->num_inlined_bytecodes()) / time.seconds(); | |
2220 tty->print_cr("%3d seconds: %f bytes/sec : %f (bytes %d + %d inlined)", | |
2221 compile_id, time.seconds(), bytes_per_sec, method->code_size(), task->num_inlined_bytecodes()); | |
2222 } | |
2223 | |
2224 // Collect counts of successful compilations | |
1748 | 2225 _sum_nmethod_size += code->total_size(); |
2226 _sum_nmethod_code_size += code->insts_size(); | |
0 | 2227 _total_compile_count++; |
2228 | |
2229 if (UsePerfData) { | |
1748 | 2230 _perf_sum_nmethod_size->inc( code->total_size()); |
2231 _perf_sum_nmethod_code_size->inc(code->insts_size()); | |
0 | 2232 _perf_total_compile_count->inc(); |
2233 } | |
2234 | |
2235 if (is_osr) { | |
2236 if (UsePerfData) _perf_total_osr_compile_count->inc(); | |
2237 _total_osr_compile_count++; | |
2238 } else { | |
2239 if (UsePerfData) _perf_total_standard_compile_count->inc(); | |
2240 _total_standard_compile_count++; | |
2241 } | |
2242 } | |
2243 // set the current method for the thread to null | |
2244 if (UsePerfData) counters->set_current_method(""); | |
2245 } | |
2246 | |
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2247 const char* CompileBroker::compiler_name(int comp_level) { |
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2248 AbstractCompiler *comp = CompileBroker::compiler(comp_level); |
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2249 if (comp == NULL) { |
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2250 return "no compiler"; |
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2251 } else { |
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2252 return (comp->name()); |
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2253 } |
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2254 } |
0 | 2255 |
2256 void CompileBroker::print_times() { | |
2257 tty->cr(); | |
2258 tty->print_cr("Accumulated compiler times (for compiled methods only)"); | |
2259 tty->print_cr("------------------------------------------------"); | |
2260 //0000000000111111111122222222223333333333444444444455555555556666666666 | |
2261 //0123456789012345678901234567890123456789012345678901234567890123456789 | |
2262 tty->print_cr(" Total compilation time : %6.3f s", CompileBroker::_t_total_compilation.seconds()); | |
2263 tty->print_cr(" Standard compilation : %6.3f s, Average : %2.3f", | |
2264 CompileBroker::_t_standard_compilation.seconds(), | |
2265 CompileBroker::_t_standard_compilation.seconds() / CompileBroker::_total_standard_compile_count); | |
2266 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 | 2267 |
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2268 AbstractCompiler *comp = compiler(CompLevel_simple); |
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2269 if (comp != NULL) { |
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2270 comp->print_timers(); |
0 | 2271 } |
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2272 comp = compiler(CompLevel_full_optimization); |
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2273 if (comp != NULL) { |
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2274 comp->print_timers(); |
1783 | 2275 } |
0 | 2276 tty->cr(); |
8860 | 2277 tty->print_cr(" Total compiled methods : %6d methods", CompileBroker::_total_compile_count); |
2278 tty->print_cr(" Standard compilation : %6d methods", CompileBroker::_total_standard_compile_count); | |
2279 tty->print_cr(" On stack replacement : %6d methods", CompileBroker::_total_osr_compile_count); | |
0 | 2280 int tcb = CompileBroker::_sum_osr_bytes_compiled + CompileBroker::_sum_standard_bytes_compiled; |
2281 tty->print_cr(" Total compiled bytecodes : %6d bytes", tcb); | |
2282 tty->print_cr(" Standard compilation : %6d bytes", CompileBroker::_sum_standard_bytes_compiled); | |
2283 tty->print_cr(" On stack replacement : %6d bytes", CompileBroker::_sum_osr_bytes_compiled); | |
2284 int bps = (int)(tcb / CompileBroker::_t_total_compilation.seconds()); | |
2285 tty->print_cr(" Average compilation speed: %6d bytes/s", bps); | |
2286 tty->cr(); | |
2287 tty->print_cr(" nmethod code size : %6d bytes", CompileBroker::_sum_nmethod_code_size); | |
2288 tty->print_cr(" nmethod total size : %6d bytes", CompileBroker::_sum_nmethod_size); | |
2289 } | |
2290 | |
2291 // Debugging output for failure | |
2292 void CompileBroker::print_last_compile() { | |
2293 if ( _last_compile_level != CompLevel_none && | |
2294 compiler(_last_compile_level) != NULL && | |
2295 _last_method_compiled != NULL && | |
2296 _last_compile_type != no_compile) { | |
2297 if (_last_compile_type == osr_compile) { | |
2298 tty->print_cr("Last parse: [osr]%d+++(%d) %s", | |
2299 _osr_compilation_id, _last_compile_level, _last_method_compiled); | |
2300 } else { | |
2301 tty->print_cr("Last parse: %d+++(%d) %s", | |
2302 _compilation_id, _last_compile_level, _last_method_compiled); | |
2303 } | |
2304 } | |
2305 } | |
2306 | |
2307 | |
2308 void CompileBroker::print_compiler_threads_on(outputStream* st) { | |
2309 #ifndef PRODUCT | |
2310 st->print_cr("Compiler thread printing unimplemented."); | |
2311 st->cr(); | |
2312 #endif | |
2313 } |