Mercurial > hg > graal-compiler
annotate src/share/vm/compiler/compileBroker.cpp @ 4316:b4b16e4e043f
Fix eager resolving for class constants
author | Peter Hofer <peter.hofer@jku.at> |
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date | Mon, 23 Jan 2012 14:35:29 +0100 |
parents | feb590a8497f |
children | 3c21eee8ab4d |
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0 | 1 /* |
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2 * Copyright (c) 1999, 2011, 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" | |
34 #include "oops/methodDataOop.hpp" | |
35 #include "oops/methodOop.hpp" | |
36 #include "oops/oop.inline.hpp" | |
37 #include "prims/nativeLookup.hpp" | |
38 #include "runtime/arguments.hpp" | |
39 #include "runtime/compilationPolicy.hpp" | |
40 #include "runtime/init.hpp" | |
41 #include "runtime/interfaceSupport.hpp" | |
42 #include "runtime/javaCalls.hpp" | |
43 #include "runtime/os.hpp" | |
44 #include "runtime/sharedRuntime.hpp" | |
45 #include "runtime/sweeper.hpp" | |
46 #include "utilities/dtrace.hpp" | |
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47 #include "graal/graalCompiler.hpp" |
1972 | 48 #ifdef COMPILER1 |
49 #include "c1/c1_Compiler.hpp" | |
50 #endif | |
51 #ifdef COMPILER2 | |
52 #include "opto/c2compiler.hpp" | |
53 #endif | |
54 #ifdef SHARK | |
55 #include "shark/sharkCompiler.hpp" | |
56 #endif | |
0 | 57 |
58 #ifdef DTRACE_ENABLED | |
59 | |
60 // Only bother with this argument setup if dtrace is available | |
61 | |
4006 | 62 #ifndef USDT2 |
0 | 63 HS_DTRACE_PROBE_DECL8(hotspot, method__compile__begin, |
64 char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t); | |
65 HS_DTRACE_PROBE_DECL9(hotspot, method__compile__end, | |
66 char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t, bool); | |
67 | |
68 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method) \ | |
69 { \ | |
70 char* comp_name = (char*)(compiler)->name(); \ | |
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71 Symbol* klass_name = (method)->klass_name(); \ |
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72 Symbol* name = (method)->name(); \ |
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73 Symbol* signature = (method)->signature(); \ |
0 | 74 HS_DTRACE_PROBE8(hotspot, method__compile__begin, \ |
75 comp_name, strlen(comp_name), \ | |
76 klass_name->bytes(), klass_name->utf8_length(), \ | |
77 name->bytes(), name->utf8_length(), \ | |
78 signature->bytes(), signature->utf8_length()); \ | |
79 } | |
80 | |
81 #define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, success) \ | |
82 { \ | |
83 char* comp_name = (char*)(compiler)->name(); \ | |
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84 Symbol* klass_name = (method)->klass_name(); \ |
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85 Symbol* name = (method)->name(); \ |
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86 Symbol* signature = (method)->signature(); \ |
0 | 87 HS_DTRACE_PROBE9(hotspot, method__compile__end, \ |
88 comp_name, strlen(comp_name), \ | |
89 klass_name->bytes(), klass_name->utf8_length(), \ | |
90 name->bytes(), name->utf8_length(), \ | |
91 signature->bytes(), signature->utf8_length(), (success)); \ | |
92 } | |
93 | |
4006 | 94 #else /* USDT2 */ |
95 | |
96 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method) \ | |
97 { \ | |
98 char* comp_name = (char*)(compiler)->name(); \ | |
99 Symbol* klass_name = (method)->klass_name(); \ | |
100 Symbol* name = (method)->name(); \ | |
101 Symbol* signature = (method)->signature(); \ | |
102 HOTSPOT_METHOD_COMPILE_BEGIN( \ | |
103 comp_name, strlen(comp_name), \ | |
104 (char *) klass_name->bytes(), klass_name->utf8_length(), \ | |
105 (char *) name->bytes(), name->utf8_length(), \ | |
106 (char *) signature->bytes(), signature->utf8_length()); \ | |
107 } | |
108 | |
109 #define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, success) \ | |
110 { \ | |
111 char* comp_name = (char*)(compiler)->name(); \ | |
112 Symbol* klass_name = (method)->klass_name(); \ | |
113 Symbol* name = (method)->name(); \ | |
114 Symbol* signature = (method)->signature(); \ | |
115 HOTSPOT_METHOD_COMPILE_END( \ | |
116 comp_name, strlen(comp_name), \ | |
117 (char *) klass_name->bytes(), klass_name->utf8_length(), \ | |
118 (char *) name->bytes(), name->utf8_length(), \ | |
119 (char *) signature->bytes(), signature->utf8_length(), (success)); \ | |
120 } | |
121 #endif /* USDT2 */ | |
122 | |
0 | 123 #else // ndef DTRACE_ENABLED |
124 | |
125 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method) | |
126 #define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, success) | |
127 | |
128 #endif // ndef DTRACE_ENABLED | |
129 | |
130 bool CompileBroker::_initialized = false; | |
131 volatile bool CompileBroker::_should_block = false; | |
1202 | 132 volatile jint CompileBroker::_should_compile_new_jobs = run_compilation; |
0 | 133 |
134 // The installed compiler(s) | |
135 AbstractCompiler* CompileBroker::_compilers[2]; | |
136 | |
137 // These counters are used for assigning id's to each compilation | |
138 uint CompileBroker::_compilation_id = 0; | |
139 uint CompileBroker::_osr_compilation_id = 0; | |
140 | |
141 // Debugging information | |
142 int CompileBroker::_last_compile_type = no_compile; | |
143 int CompileBroker::_last_compile_level = CompLevel_none; | |
144 char CompileBroker::_last_method_compiled[CompileBroker::name_buffer_length]; | |
145 | |
146 // Performance counters | |
147 PerfCounter* CompileBroker::_perf_total_compilation = NULL; | |
148 PerfCounter* CompileBroker::_perf_osr_compilation = NULL; | |
149 PerfCounter* CompileBroker::_perf_standard_compilation = NULL; | |
150 | |
151 PerfCounter* CompileBroker::_perf_total_bailout_count = NULL; | |
152 PerfCounter* CompileBroker::_perf_total_invalidated_count = NULL; | |
153 PerfCounter* CompileBroker::_perf_total_compile_count = NULL; | |
154 PerfCounter* CompileBroker::_perf_total_osr_compile_count = NULL; | |
155 PerfCounter* CompileBroker::_perf_total_standard_compile_count = NULL; | |
156 | |
157 PerfCounter* CompileBroker::_perf_sum_osr_bytes_compiled = NULL; | |
158 PerfCounter* CompileBroker::_perf_sum_standard_bytes_compiled = NULL; | |
159 PerfCounter* CompileBroker::_perf_sum_nmethod_size = NULL; | |
160 PerfCounter* CompileBroker::_perf_sum_nmethod_code_size = NULL; | |
161 | |
162 PerfStringVariable* CompileBroker::_perf_last_method = NULL; | |
163 PerfStringVariable* CompileBroker::_perf_last_failed_method = NULL; | |
164 PerfStringVariable* CompileBroker::_perf_last_invalidated_method = NULL; | |
165 PerfVariable* CompileBroker::_perf_last_compile_type = NULL; | |
166 PerfVariable* CompileBroker::_perf_last_compile_size = NULL; | |
167 PerfVariable* CompileBroker::_perf_last_failed_type = NULL; | |
168 PerfVariable* CompileBroker::_perf_last_invalidated_type = NULL; | |
169 | |
170 // Timers and counters for generating statistics | |
171 elapsedTimer CompileBroker::_t_total_compilation; | |
172 elapsedTimer CompileBroker::_t_osr_compilation; | |
173 elapsedTimer CompileBroker::_t_standard_compilation; | |
174 | |
175 int CompileBroker::_total_bailout_count = 0; | |
176 int CompileBroker::_total_invalidated_count = 0; | |
177 int CompileBroker::_total_compile_count = 0; | |
178 int CompileBroker::_total_osr_compile_count = 0; | |
179 int CompileBroker::_total_standard_compile_count = 0; | |
180 | |
181 int CompileBroker::_sum_osr_bytes_compiled = 0; | |
182 int CompileBroker::_sum_standard_bytes_compiled = 0; | |
183 int CompileBroker::_sum_nmethod_size = 0; | |
184 int CompileBroker::_sum_nmethod_code_size = 0; | |
185 | |
1783 | 186 CompileQueue* CompileBroker::_c2_method_queue = NULL; |
187 CompileQueue* CompileBroker::_c1_method_queue = NULL; | |
0 | 188 CompileTask* CompileBroker::_task_free_list = NULL; |
189 | |
190 GrowableArray<CompilerThread*>* CompileBroker::_method_threads = NULL; | |
191 | |
192 | |
193 CompileTaskWrapper::CompileTaskWrapper(CompileTask* task) { | |
194 CompilerThread* thread = CompilerThread::current(); | |
195 thread->set_task(task); | |
196 CompileLog* log = thread->log(); | |
197 if (log != NULL) task->log_task_start(log); | |
198 } | |
199 | |
200 CompileTaskWrapper::~CompileTaskWrapper() { | |
201 CompilerThread* thread = CompilerThread::current(); | |
202 CompileTask* task = thread->task(); | |
203 CompileLog* log = thread->log(); | |
204 if (log != NULL) task->log_task_done(log); | |
205 thread->set_task(NULL); | |
206 task->set_code_handle(NULL); | |
207 DEBUG_ONLY(thread->set_env((ciEnv*)badAddress)); | |
208 if (task->is_blocking()) { | |
209 MutexLocker notifier(task->lock(), thread); | |
210 task->mark_complete(); | |
211 // Notify the waiting thread that the compilation has completed. | |
212 task->lock()->notify_all(); | |
213 } else { | |
214 task->mark_complete(); | |
215 | |
216 // By convention, the compiling thread is responsible for | |
217 // recycling a non-blocking CompileTask. | |
218 CompileBroker::free_task(task); | |
219 } | |
220 } | |
221 | |
222 | |
223 // ------------------------------------------------------------------ | |
224 // CompileTask::initialize | |
225 void CompileTask::initialize(int compile_id, | |
226 methodHandle method, | |
227 int osr_bci, | |
228 int comp_level, | |
229 methodHandle hot_method, | |
230 int hot_count, | |
231 const char* comment, | |
232 bool is_blocking) { | |
233 assert(!_lock->is_locked(), "bad locking"); | |
234 | |
235 _compile_id = compile_id; | |
236 _method = JNIHandles::make_global(method); | |
237 _osr_bci = osr_bci; | |
238 _is_blocking = is_blocking; | |
239 _comp_level = comp_level; | |
240 _num_inlined_bytecodes = 0; | |
241 | |
242 _is_complete = false; | |
243 _is_success = false; | |
244 _code_handle = NULL; | |
245 | |
246 _hot_method = NULL; | |
247 _hot_count = hot_count; | |
248 _time_queued = 0; // tidy | |
249 _comment = comment; | |
250 | |
251 if (LogCompilation) { | |
252 _time_queued = os::elapsed_counter(); | |
253 if (hot_method.not_null()) { | |
254 if (hot_method == method) { | |
255 _hot_method = _method; | |
256 } else { | |
257 _hot_method = JNIHandles::make_global(hot_method); | |
258 } | |
259 } | |
260 } | |
261 | |
262 _next = NULL; | |
263 } | |
264 | |
265 // ------------------------------------------------------------------ | |
266 // CompileTask::code/set_code | |
267 nmethod* CompileTask::code() const { | |
268 if (_code_handle == NULL) return NULL; | |
269 return _code_handle->code(); | |
270 } | |
271 void CompileTask::set_code(nmethod* nm) { | |
272 if (_code_handle == NULL && nm == NULL) return; | |
273 guarantee(_code_handle != NULL, ""); | |
274 _code_handle->set_code(nm); | |
275 if (nm == NULL) _code_handle = NULL; // drop the handle also | |
276 } | |
277 | |
278 // ------------------------------------------------------------------ | |
279 // CompileTask::free | |
280 void CompileTask::free() { | |
281 set_code(NULL); | |
282 assert(!_lock->is_locked(), "Should not be locked when freed"); | |
283 if (_hot_method != NULL && _hot_method != _method) { | |
284 JNIHandles::destroy_global(_hot_method); | |
285 } | |
286 JNIHandles::destroy_global(_method); | |
287 } | |
288 | |
289 | |
290 // ------------------------------------------------------------------ | |
291 // CompileTask::print | |
292 void CompileTask::print() { | |
293 tty->print("<CompileTask compile_id=%d ", _compile_id); | |
294 tty->print("method="); | |
295 ((methodOop)JNIHandles::resolve(_method))->print_name(tty); | |
296 tty->print_cr(" osr_bci=%d is_blocking=%s is_complete=%s is_success=%s>", | |
297 _osr_bci, bool_to_str(_is_blocking), | |
298 bool_to_str(_is_complete), bool_to_str(_is_success)); | |
299 } | |
300 | |
1783 | 301 |
0 | 302 // ------------------------------------------------------------------ |
303 // CompileTask::print_line_on_error | |
304 // | |
305 // This function is called by fatal error handler when the thread | |
306 // causing troubles is a compiler thread. | |
307 // | |
308 // Do not grab any lock, do not allocate memory. | |
309 // | |
310 // Otherwise it's the same as CompileTask::print_line() | |
311 // | |
312 void CompileTask::print_line_on_error(outputStream* st, char* buf, int buflen) { | |
313 // print compiler name | |
314 st->print("%s:", CompileBroker::compiler(comp_level())->name()); | |
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315 print_compilation(st); |
0 | 316 } |
317 | |
318 // ------------------------------------------------------------------ | |
319 // CompileTask::print_line | |
320 void CompileTask::print_line() { | |
321 ttyLocker ttyl; // keep the following output all in one block | |
322 // print compiler name if requested | |
323 if (CIPrintCompilerName) tty->print("%s:", CompileBroker::compiler(comp_level())->name()); | |
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324 print_compilation(); |
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325 } |
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326 |
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327 |
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328 // ------------------------------------------------------------------ |
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329 // CompileTask::print_compilation_impl |
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330 void CompileTask::print_compilation_impl(outputStream* st, methodOop method, int compile_id, int comp_level, bool is_osr_method, int osr_bci, bool is_blocking, const char* msg) { |
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331 st->print("%7d ", (int) st->time_stamp().milliseconds()); // print timestamp |
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332 st->print("%4d ", compile_id); // print compilation number |
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333 |
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334 // For unloaded methods the transition to zombie occurs after the |
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335 // method is cleared so it's impossible to report accurate |
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336 // information for that case. |
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337 bool is_synchronized = false; |
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338 bool has_exception_handler = false; |
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339 bool is_native = false; |
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340 if (method != NULL) { |
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341 is_synchronized = method->is_synchronized(); |
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342 has_exception_handler = method->has_exception_handler(); |
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343 is_native = method->is_native(); |
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344 } |
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345 // method attributes |
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346 const char compile_type = is_osr_method ? '%' : ' '; |
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347 const char sync_char = is_synchronized ? 's' : ' '; |
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348 const char exception_char = has_exception_handler ? '!' : ' '; |
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349 const char blocking_char = is_blocking ? 'b' : ' '; |
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350 const char native_char = is_native ? 'n' : ' '; |
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351 |
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352 // print method attributes |
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353 st->print("%c%c%c%c%c ", compile_type, sync_char, exception_char, blocking_char, native_char); |
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354 |
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355 if (TieredCompilation) { |
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356 if (comp_level != -1) st->print("%d ", comp_level); |
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357 else st->print("- "); |
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358 } |
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359 st->print(" "); // more indent |
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360 |
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361 if (method == NULL) { |
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362 st->print("(method)"); |
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363 } else { |
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364 method->print_short_name(st); |
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365 if (is_osr_method) { |
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366 st->print(" @ %d", osr_bci); |
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367 } |
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368 st->print(" (%d bytes)", method->code_size()); |
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369 } |
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370 |
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371 if (msg != NULL) { |
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372 st->print(" %s", msg); |
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373 } |
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374 st->cr(); |
0 | 375 } |
376 | |
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377 // ------------------------------------------------------------------ |
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378 // CompileTask::print_inlining |
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379 void CompileTask::print_inlining(outputStream* st, ciMethod* method, int inline_level, int bci, const char* msg) { |
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380 // 1234567 |
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381 st->print(" "); // print timestamp |
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382 // 1234 |
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383 st->print(" "); // print compilation number |
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384 |
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385 // method attributes |
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386 const char sync_char = method->is_synchronized() ? 's' : ' '; |
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387 const char exception_char = method->has_exception_handlers() ? '!' : ' '; |
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388 const char monitors_char = method->has_monitor_bytecodes() ? 'm' : ' '; |
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389 |
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390 // print method attributes |
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391 st->print(" %c%c%c ", sync_char, exception_char, monitors_char); |
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392 |
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393 if (TieredCompilation) { |
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394 st->print(" "); |
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395 } |
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396 st->print(" "); // more indent |
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397 st->print(" "); // initial inlining indent |
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398 |
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399 for (int i = 0; i < inline_level; i++) st->print(" "); |
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400 |
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401 st->print("@ %d ", bci); // print bci |
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402 method->print_short_name(st); |
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403 st->print(" (%d bytes)", method->code_size()); |
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404 |
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405 if (msg != NULL) { |
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406 st->print(" %s", msg); |
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407 } |
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408 st->cr(); |
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409 } |
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410 |
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411 // ------------------------------------------------------------------ |
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412 // CompileTask::print_inline_indent |
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413 void CompileTask::print_inline_indent(int inline_level, outputStream* st) { |
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414 // 1234567 |
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415 st->print(" "); // print timestamp |
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416 // 1234 |
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417 st->print(" "); // print compilation number |
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418 // %s!bn |
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419 st->print(" "); // print method attributes |
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420 if (TieredCompilation) { |
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421 st->print(" "); |
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422 } |
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423 st->print(" "); // more indent |
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424 st->print(" "); // initial inlining indent |
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425 for (int i = 0; i < inline_level; i++) st->print(" "); |
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426 } |
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427 |
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428 // ------------------------------------------------------------------ |
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429 // CompileTask::print_compilation |
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430 void CompileTask::print_compilation(outputStream* st) { |
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431 oop rem = JNIHandles::resolve(method_handle()); |
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432 assert(rem != NULL && rem->is_method(), "must be"); |
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433 methodOop method = (methodOop) rem; |
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434 bool is_osr_method = osr_bci() != InvocationEntryBci; |
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435 print_compilation_impl(st, method, compile_id(), comp_level(), is_osr_method, osr_bci(), is_blocking()); |
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436 } |
0 | 437 |
438 // ------------------------------------------------------------------ | |
439 // CompileTask::log_task | |
440 void CompileTask::log_task(xmlStream* log) { | |
441 Thread* thread = Thread::current(); | |
442 methodHandle method(thread, | |
443 (methodOop)JNIHandles::resolve(method_handle())); | |
444 ResourceMark rm(thread); | |
445 | |
446 // <task id='9' method='M' osr_bci='X' level='1' blocking='1' stamp='1.234'> | |
447 if (_compile_id != 0) log->print(" compile_id='%d'", _compile_id); | |
448 if (_osr_bci != CompileBroker::standard_entry_bci) { | |
449 log->print(" compile_kind='osr'"); // same as nmethod::compile_kind | |
450 } // else compile_kind='c2c' | |
451 if (!method.is_null()) log->method(method); | |
452 if (_osr_bci != CompileBroker::standard_entry_bci) { | |
453 log->print(" osr_bci='%d'", _osr_bci); | |
454 } | |
455 if (_comp_level != CompLevel_highest_tier) { | |
456 log->print(" level='%d'", _comp_level); | |
457 } | |
458 if (_is_blocking) { | |
459 log->print(" blocking='1'"); | |
460 } | |
461 log->stamp(); | |
462 } | |
463 | |
464 | |
465 // ------------------------------------------------------------------ | |
466 // CompileTask::log_task_queued | |
467 void CompileTask::log_task_queued() { | |
468 Thread* thread = Thread::current(); | |
469 ttyLocker ttyl; | |
470 ResourceMark rm(thread); | |
471 | |
472 xtty->begin_elem("task_queued"); | |
473 log_task(xtty); | |
474 if (_comment != NULL) { | |
475 xtty->print(" comment='%s'", _comment); | |
476 } | |
477 if (_hot_method != NULL) { | |
478 methodHandle hot(thread, | |
479 (methodOop)JNIHandles::resolve(_hot_method)); | |
480 methodHandle method(thread, | |
481 (methodOop)JNIHandles::resolve(_method)); | |
482 if (hot() != method()) { | |
483 xtty->method(hot); | |
484 } | |
485 } | |
486 if (_hot_count != 0) { | |
487 xtty->print(" hot_count='%d'", _hot_count); | |
488 } | |
489 xtty->end_elem(); | |
490 } | |
491 | |
492 | |
493 // ------------------------------------------------------------------ | |
494 // CompileTask::log_task_start | |
495 void CompileTask::log_task_start(CompileLog* log) { | |
496 log->begin_head("task"); | |
497 log_task(log); | |
498 log->end_head(); | |
499 } | |
500 | |
501 | |
502 // ------------------------------------------------------------------ | |
503 // CompileTask::log_task_done | |
504 void CompileTask::log_task_done(CompileLog* log) { | |
505 Thread* thread = Thread::current(); | |
506 methodHandle method(thread, | |
507 (methodOop)JNIHandles::resolve(method_handle())); | |
508 ResourceMark rm(thread); | |
509 | |
510 // <task_done ... stamp='1.234'> </task> | |
511 nmethod* nm = code(); | |
512 log->begin_elem("task_done success='%d' nmsize='%d' count='%d'", | |
1748 | 513 _is_success, nm == NULL ? 0 : nm->content_size(), |
0 | 514 method->invocation_count()); |
515 int bec = method->backedge_count(); | |
516 if (bec != 0) log->print(" backedge_count='%d'", bec); | |
517 // Note: "_is_complete" is about to be set, but is not. | |
518 if (_num_inlined_bytecodes != 0) { | |
519 log->print(" inlined_bytes='%d'", _num_inlined_bytecodes); | |
520 } | |
521 log->stamp(); | |
522 log->end_elem(); | |
523 log->tail("task"); | |
524 log->clear_identities(); // next task will have different CI | |
525 if (log->unflushed_count() > 2000) { | |
526 log->flush(); | |
527 } | |
528 log->mark_file_end(); | |
529 } | |
530 | |
531 | |
532 | |
533 // ------------------------------------------------------------------ | |
534 // CompileQueue::add | |
535 // | |
536 // Add a CompileTask to a CompileQueue | |
537 void CompileQueue::add(CompileTask* task) { | |
538 assert(lock()->owned_by_self(), "must own lock"); | |
539 | |
540 task->set_next(NULL); | |
1783 | 541 task->set_prev(NULL); |
0 | 542 |
543 if (_last == NULL) { | |
544 // The compile queue is empty. | |
545 assert(_first == NULL, "queue is empty"); | |
546 _first = task; | |
547 _last = task; | |
548 } else { | |
549 // Append the task to the queue. | |
550 assert(_last->next() == NULL, "not last"); | |
551 _last->set_next(task); | |
1783 | 552 task->set_prev(_last); |
0 | 553 _last = task; |
554 } | |
1783 | 555 ++_size; |
0 | 556 |
557 // Mark the method as being in the compile queue. | |
558 ((methodOop)JNIHandles::resolve(task->method_handle()))->set_queued_for_compilation(); | |
559 | |
560 if (CIPrintCompileQueue) { | |
561 print(); | |
562 } | |
563 | |
564 if (LogCompilation && xtty != NULL) { | |
565 task->log_task_queued(); | |
566 } | |
567 | |
568 // Notify CompilerThreads that a task is available. | |
1783 | 569 lock()->notify_all(); |
0 | 570 } |
571 | |
572 // ------------------------------------------------------------------ | |
573 // CompileQueue::get | |
574 // | |
575 // Get the next CompileTask from a CompileQueue | |
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576 CompileTask* CompileQueue::get() { |
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577 NMethodSweeper::possibly_sweep(); |
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578 |
0 | 579 MutexLocker locker(lock()); |
580 // Wait for an available CompileTask. | |
581 while (_first == NULL) { | |
582 // There is no work to be done right now. Wait. | |
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583 if (UseCodeCacheFlushing && (!CompileBroker::should_compile_new_jobs() || CodeCache::needs_flushing())) { |
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584 // During the emergency sweeping periods, wake up and sweep occasionally |
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585 bool timedout = lock()->wait(!Mutex::_no_safepoint_check_flag, NmethodSweepCheckInterval*1000); |
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586 if (timedout) { |
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587 MutexUnlocker ul(lock()); |
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588 // When otherwise not busy, run nmethod sweeping |
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589 NMethodSweeper::possibly_sweep(); |
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590 } |
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591 } else { |
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592 // During normal operation no need to wake up on timer |
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593 lock()->wait(); |
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594 } |
0 | 595 } |
1783 | 596 CompileTask* task = CompilationPolicy::policy()->select_task(this); |
597 remove(task); | |
598 return task; | |
599 } | |
0 | 600 |
1783 | 601 void CompileQueue::remove(CompileTask* task) |
602 { | |
603 assert(lock()->owned_by_self(), "must own lock"); | |
604 if (task->prev() != NULL) { | |
605 task->prev()->set_next(task->next()); | |
606 } else { | |
607 // max is the first element | |
608 assert(task == _first, "Sanity"); | |
609 _first = task->next(); | |
0 | 610 } |
611 | |
1783 | 612 if (task->next() != NULL) { |
613 task->next()->set_prev(task->prev()); | |
614 } else { | |
615 // max is the last element | |
616 assert(task == _last, "Sanity"); | |
617 _last = task->prev(); | |
618 } | |
619 --_size; | |
0 | 620 } |
621 | |
622 // ------------------------------------------------------------------ | |
623 // CompileQueue::print | |
624 void CompileQueue::print() { | |
625 tty->print_cr("Contents of %s", name()); | |
626 tty->print_cr("----------------------"); | |
627 CompileTask* task = _first; | |
628 while (task != NULL) { | |
629 task->print_line(); | |
630 task = task->next(); | |
631 } | |
632 tty->print_cr("----------------------"); | |
633 } | |
634 | |
635 CompilerCounters::CompilerCounters(const char* thread_name, int instance, TRAPS) { | |
636 | |
637 _current_method[0] = '\0'; | |
638 _compile_type = CompileBroker::no_compile; | |
639 | |
640 if (UsePerfData) { | |
641 ResourceMark rm; | |
642 | |
643 // create the thread instance name space string - don't create an | |
644 // instance subspace if instance is -1 - keeps the adapterThread | |
645 // counters from having a ".0" namespace. | |
646 const char* thread_i = (instance == -1) ? thread_name : | |
647 PerfDataManager::name_space(thread_name, instance); | |
648 | |
649 | |
650 char* name = PerfDataManager::counter_name(thread_i, "method"); | |
651 _perf_current_method = | |
652 PerfDataManager::create_string_variable(SUN_CI, name, | |
653 cmname_buffer_length, | |
654 _current_method, CHECK); | |
655 | |
656 name = PerfDataManager::counter_name(thread_i, "type"); | |
657 _perf_compile_type = PerfDataManager::create_variable(SUN_CI, name, | |
658 PerfData::U_None, | |
659 (jlong)_compile_type, | |
660 CHECK); | |
661 | |
662 name = PerfDataManager::counter_name(thread_i, "time"); | |
663 _perf_time = PerfDataManager::create_counter(SUN_CI, name, | |
664 PerfData::U_Ticks, CHECK); | |
665 | |
666 name = PerfDataManager::counter_name(thread_i, "compiles"); | |
667 _perf_compiles = PerfDataManager::create_counter(SUN_CI, name, | |
668 PerfData::U_Events, CHECK); | |
669 } | |
670 } | |
671 | |
672 // ------------------------------------------------------------------ | |
673 // CompileBroker::compilation_init | |
674 // | |
675 // Initialize the Compilation object | |
676 void CompileBroker::compilation_init() { | |
677 _last_method_compiled[0] = '\0'; | |
678 | |
1970 | 679 #ifndef SHARK |
0 | 680 // Set the interface to the current compiler(s). |
1783 | 681 int c1_count = CompilationPolicy::policy()->compiler_count(CompLevel_simple); |
682 int c2_count = CompilationPolicy::policy()->compiler_count(CompLevel_full_optimization); | |
0 | 683 #ifdef COMPILER1 |
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685 _compilers[0] = new GraalCompiler(); |
1930 | 686 } else if (c1_count > 0) { |
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687 _compilers[0] = new Compiler(); |
1783 | 688 } |
0 | 689 #endif // COMPILER1 |
690 | |
691 #ifdef COMPILER2 | |
1783 | 692 if (c2_count > 0) { |
693 _compilers[1] = new C2Compiler(); | |
694 } | |
0 | 695 #endif // COMPILER2 |
696 | |
1970 | 697 #else // SHARK |
698 int c1_count = 0; | |
699 int c2_count = 1; | |
700 | |
701 _compilers[1] = new SharkCompiler(); | |
702 #endif // SHARK | |
1692 | 703 |
0 | 704 // Initialize the CompileTask free list |
705 _task_free_list = NULL; | |
706 | |
707 // Start the CompilerThreads | |
1783 | 708 init_compiler_threads(c1_count, c2_count); |
0 | 709 // totalTime performance counter is always created as it is required |
710 // by the implementation of java.lang.management.CompilationMBean. | |
711 { | |
712 EXCEPTION_MARK; | |
713 _perf_total_compilation = | |
714 PerfDataManager::create_counter(JAVA_CI, "totalTime", | |
715 PerfData::U_Ticks, CHECK); | |
716 } | |
717 | |
718 | |
719 if (UsePerfData) { | |
720 | |
721 EXCEPTION_MARK; | |
722 | |
723 // create the jvmstat performance counters | |
724 _perf_osr_compilation = | |
725 PerfDataManager::create_counter(SUN_CI, "osrTime", | |
726 PerfData::U_Ticks, CHECK); | |
727 | |
728 _perf_standard_compilation = | |
729 PerfDataManager::create_counter(SUN_CI, "standardTime", | |
730 PerfData::U_Ticks, CHECK); | |
731 | |
732 _perf_total_bailout_count = | |
733 PerfDataManager::create_counter(SUN_CI, "totalBailouts", | |
734 PerfData::U_Events, CHECK); | |
735 | |
736 _perf_total_invalidated_count = | |
737 PerfDataManager::create_counter(SUN_CI, "totalInvalidates", | |
738 PerfData::U_Events, CHECK); | |
739 | |
740 _perf_total_compile_count = | |
741 PerfDataManager::create_counter(SUN_CI, "totalCompiles", | |
742 PerfData::U_Events, CHECK); | |
743 _perf_total_osr_compile_count = | |
744 PerfDataManager::create_counter(SUN_CI, "osrCompiles", | |
745 PerfData::U_Events, CHECK); | |
746 | |
747 _perf_total_standard_compile_count = | |
748 PerfDataManager::create_counter(SUN_CI, "standardCompiles", | |
749 PerfData::U_Events, CHECK); | |
750 | |
751 _perf_sum_osr_bytes_compiled = | |
752 PerfDataManager::create_counter(SUN_CI, "osrBytes", | |
753 PerfData::U_Bytes, CHECK); | |
754 | |
755 _perf_sum_standard_bytes_compiled = | |
756 PerfDataManager::create_counter(SUN_CI, "standardBytes", | |
757 PerfData::U_Bytes, CHECK); | |
758 | |
759 _perf_sum_nmethod_size = | |
760 PerfDataManager::create_counter(SUN_CI, "nmethodSize", | |
761 PerfData::U_Bytes, CHECK); | |
762 | |
763 _perf_sum_nmethod_code_size = | |
764 PerfDataManager::create_counter(SUN_CI, "nmethodCodeSize", | |
765 PerfData::U_Bytes, CHECK); | |
766 | |
767 _perf_last_method = | |
768 PerfDataManager::create_string_variable(SUN_CI, "lastMethod", | |
769 CompilerCounters::cmname_buffer_length, | |
770 "", CHECK); | |
771 | |
772 _perf_last_failed_method = | |
773 PerfDataManager::create_string_variable(SUN_CI, "lastFailedMethod", | |
774 CompilerCounters::cmname_buffer_length, | |
775 "", CHECK); | |
776 | |
777 _perf_last_invalidated_method = | |
778 PerfDataManager::create_string_variable(SUN_CI, "lastInvalidatedMethod", | |
779 CompilerCounters::cmname_buffer_length, | |
780 "", CHECK); | |
781 | |
782 _perf_last_compile_type = | |
783 PerfDataManager::create_variable(SUN_CI, "lastType", | |
784 PerfData::U_None, | |
785 (jlong)CompileBroker::no_compile, | |
786 CHECK); | |
787 | |
788 _perf_last_compile_size = | |
789 PerfDataManager::create_variable(SUN_CI, "lastSize", | |
790 PerfData::U_Bytes, | |
791 (jlong)CompileBroker::no_compile, | |
792 CHECK); | |
793 | |
794 | |
795 _perf_last_failed_type = | |
796 PerfDataManager::create_variable(SUN_CI, "lastFailedType", | |
797 PerfData::U_None, | |
798 (jlong)CompileBroker::no_compile, | |
799 CHECK); | |
800 | |
801 _perf_last_invalidated_type = | |
802 PerfDataManager::create_variable(SUN_CI, "lastInvalidatedType", | |
803 PerfData::U_None, | |
804 (jlong)CompileBroker::no_compile, | |
805 CHECK); | |
806 } | |
807 | |
808 _initialized = true; | |
809 } | |
810 | |
811 | |
812 | |
813 // ------------------------------------------------------------------ | |
814 // CompileBroker::make_compiler_thread | |
815 CompilerThread* CompileBroker::make_compiler_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, TRAPS) { | |
816 CompilerThread* compiler_thread = NULL; | |
817 | |
818 klassOop k = | |
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819 SystemDictionary::resolve_or_fail(vmSymbols::java_lang_Thread(), |
0 | 820 true, CHECK_0); |
821 instanceKlassHandle klass (THREAD, k); | |
822 instanceHandle thread_oop = klass->allocate_instance_handle(CHECK_0); | |
823 Handle string = java_lang_String::create_from_str(name, CHECK_0); | |
824 | |
825 // Initialize thread_oop to put it into the system threadGroup | |
826 Handle thread_group (THREAD, Universe::system_thread_group()); | |
827 JavaValue result(T_VOID); | |
828 JavaCalls::call_special(&result, thread_oop, | |
829 klass, | |
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830 vmSymbols::object_initializer_name(), |
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831 vmSymbols::threadgroup_string_void_signature(), |
0 | 832 thread_group, |
833 string, | |
834 CHECK_0); | |
835 | |
836 { | |
837 MutexLocker mu(Threads_lock, THREAD); | |
838 compiler_thread = new CompilerThread(queue, counters); | |
839 // At this point the new CompilerThread data-races with this startup | |
840 // thread (which I believe is the primoridal thread and NOT the VM | |
841 // thread). This means Java bytecodes being executed at startup can | |
842 // queue compile jobs which will run at whatever default priority the | |
843 // newly created CompilerThread runs at. | |
844 | |
845 | |
846 // At this point it may be possible that no osthread was created for the | |
847 // JavaThread due to lack of memory. We would have to throw an exception | |
848 // in that case. However, since this must work and we do not allow | |
849 // exceptions anyway, check and abort if this fails. | |
850 | |
851 if (compiler_thread == NULL || compiler_thread->osthread() == NULL){ | |
852 vm_exit_during_initialization("java.lang.OutOfMemoryError", | |
853 "unable to create new native thread"); | |
854 } | |
855 | |
856 java_lang_Thread::set_thread(thread_oop(), compiler_thread); | |
857 | |
858 // Note that this only sets the JavaThread _priority field, which by | |
859 // definition is limited to Java priorities and not OS priorities. | |
860 // The os-priority is set in the CompilerThread startup code itself | |
861 java_lang_Thread::set_priority(thread_oop(), NearMaxPriority); | |
862 // CLEANUP PRIORITIES: This -if- statement hids a bug whereby the compiler | |
863 // threads never have their OS priority set. The assumption here is to | |
864 // enable the Performance group to do flag tuning, figure out a suitable | |
865 // CompilerThreadPriority, and then remove this 'if' statement (and | |
866 // comment) and unconditionally set the priority. | |
867 | |
868 // Compiler Threads should be at the highest Priority | |
869 if ( CompilerThreadPriority != -1 ) | |
870 os::set_native_priority( compiler_thread, CompilerThreadPriority ); | |
871 else | |
872 os::set_native_priority( compiler_thread, os::java_to_os_priority[NearMaxPriority]); | |
873 | |
874 // Note that I cannot call os::set_priority because it expects Java | |
875 // priorities and I am *explicitly* using OS priorities so that it's | |
876 // possible to set the compiler thread priority higher than any Java | |
877 // thread. | |
878 | |
879 java_lang_Thread::set_daemon(thread_oop()); | |
880 | |
881 compiler_thread->set_threadObj(thread_oop()); | |
882 Threads::add(compiler_thread); | |
883 Thread::start(compiler_thread); | |
884 } | |
885 // Let go of Threads_lock before yielding | |
886 os::yield(); // make sure that the compiler thread is started early (especially helpful on SOLARIS) | |
887 | |
888 return compiler_thread; | |
889 } | |
890 | |
891 | |
892 // ------------------------------------------------------------------ | |
893 // CompileBroker::init_compiler_threads | |
894 // | |
895 // Initialize the compilation queue | |
1783 | 896 void CompileBroker::init_compiler_threads(int c1_compiler_count, int c2_compiler_count) { |
0 | 897 EXCEPTION_MARK; |
2447 | 898 #if !defined(ZERO) && !defined(SHARK) |
1783 | 899 assert(c2_compiler_count > 0 || c1_compiler_count > 0, "No compilers?"); |
2447 | 900 #endif // !ZERO && !SHARK |
1783 | 901 if (c2_compiler_count > 0) { |
902 _c2_method_queue = new CompileQueue("C2MethodQueue", MethodCompileQueue_lock); | |
903 } | |
904 if (c1_compiler_count > 0) { | |
905 _c1_method_queue = new CompileQueue("C1MethodQueue", MethodCompileQueue_lock); | |
906 } | |
0 | 907 |
1783 | 908 int compiler_count = c1_compiler_count + c2_compiler_count; |
909 | |
0 | 910 _method_threads = |
911 new (ResourceObj::C_HEAP) GrowableArray<CompilerThread*>(compiler_count, true); | |
912 | |
913 char name_buffer[256]; | |
1783 | 914 for (int i = 0; i < c2_compiler_count; i++) { |
0 | 915 // Create a name for our thread. |
1783 | 916 sprintf(name_buffer, "C2 CompilerThread%d", i); |
0 | 917 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK); |
1783 | 918 CompilerThread* new_thread = make_compiler_thread(name_buffer, _c2_method_queue, counters, CHECK); |
0 | 919 _method_threads->append(new_thread); |
920 } | |
1783 | 921 |
922 for (int i = c2_compiler_count; i < compiler_count; i++) { | |
923 // Create a name for our thread. | |
924 sprintf(name_buffer, "C1 CompilerThread%d", i); | |
925 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK); | |
926 CompilerThread* new_thread = make_compiler_thread(name_buffer, _c1_method_queue, counters, CHECK); | |
927 _method_threads->append(new_thread); | |
928 } | |
929 | |
0 | 930 if (UsePerfData) { |
931 PerfDataManager::create_constant(SUN_CI, "threads", PerfData::U_Bytes, | |
932 compiler_count, CHECK); | |
933 } | |
934 } | |
935 | |
936 // ------------------------------------------------------------------ | |
937 // CompileBroker::is_idle | |
938 bool CompileBroker::is_idle() { | |
1783 | 939 if (_c2_method_queue != NULL && !_c2_method_queue->is_empty()) { |
940 return false; | |
941 } else if (_c1_method_queue != NULL && !_c1_method_queue->is_empty()) { | |
0 | 942 return false; |
943 } else { | |
944 int num_threads = _method_threads->length(); | |
945 for (int i=0; i<num_threads; i++) { | |
946 if (_method_threads->at(i)->task() != NULL) { | |
947 return false; | |
948 } | |
949 } | |
950 | |
951 // No pending or active compilations. | |
952 return true; | |
953 } | |
954 } | |
955 | |
956 | |
957 // ------------------------------------------------------------------ | |
958 // CompileBroker::compile_method | |
959 // | |
960 // Request compilation of a method. | |
961 void CompileBroker::compile_method_base(methodHandle method, | |
962 int osr_bci, | |
963 int comp_level, | |
964 methodHandle hot_method, | |
965 int hot_count, | |
966 const char* comment, | |
967 TRAPS) { | |
968 // do nothing if compiler thread(s) is not available | |
969 if (!_initialized ) { | |
970 return; | |
971 } | |
972 | |
973 guarantee(!method->is_abstract(), "cannot compile abstract methods"); | |
974 assert(method->method_holder()->klass_part()->oop_is_instance(), | |
975 "sanity check"); | |
976 assert(!instanceKlass::cast(method->method_holder())->is_not_initialized(), | |
977 "method holder must be initialized"); | |
978 | |
979 if (CIPrintRequests) { | |
980 tty->print("request: "); | |
981 method->print_short_name(tty); | |
982 if (osr_bci != InvocationEntryBci) { | |
983 tty->print(" osr_bci: %d", osr_bci); | |
984 } | |
985 tty->print(" comment: %s count: %d", comment, hot_count); | |
986 if (!hot_method.is_null()) { | |
987 tty->print(" hot: "); | |
988 if (hot_method() != method()) { | |
989 hot_method->print_short_name(tty); | |
990 } else { | |
991 tty->print("yes"); | |
992 } | |
993 } | |
994 tty->cr(); | |
995 } | |
996 | |
997 // A request has been made for compilation. Before we do any | |
998 // real work, check to see if the method has been compiled | |
999 // in the meantime with a definitive result. | |
1000 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
1001 return; | |
1002 } | |
1003 | |
2403 | 1004 #ifndef PRODUCT |
1005 if (osr_bci != -1 && !FLAG_IS_DEFAULT(OSROnlyBCI)) { | |
1006 if ((OSROnlyBCI > 0) ? (OSROnlyBCI != osr_bci) : (-OSROnlyBCI == osr_bci)) { | |
1007 // Positive OSROnlyBCI means only compile that bci. Negative means don't compile that BCI. | |
1008 return; | |
1009 } | |
1010 } | |
1011 #endif | |
1783 | 1012 |
0 | 1013 // If this method is already in the compile queue, then |
1014 // we do not block the current thread. | |
1015 if (compilation_is_in_queue(method, osr_bci)) { | |
1016 // We may want to decay our counter a bit here to prevent | |
1017 // multiple denied requests for compilation. This is an | |
1018 // open compilation policy issue. Note: The other possibility, | |
1019 // in the case that this is a blocking compile request, is to have | |
1020 // all subsequent blocking requesters wait for completion of | |
1021 // ongoing compiles. Note that in this case we'll need a protocol | |
1022 // for freeing the associated compile tasks. [Or we could have | |
1023 // a single static monitor on which all these waiters sleep.] | |
1024 return; | |
1025 } | |
1026 | |
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1027 // If the requesting thread is holding the pending list lock |
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1028 // then we just return. We can't risk blocking while holding |
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1029 // the pending list lock or a 3-way deadlock may occur |
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1030 // between the reference handler thread, a GC (instigated |
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1031 // by a compiler thread), and compiled method registration. |
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1032 if (instanceRefKlass::owns_pending_list_lock(JavaThread::current())) { |
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1033 return; |
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1034 } |
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1035 |
0 | 1036 // Outputs from the following MutexLocker block: |
1037 CompileTask* task = NULL; | |
1038 bool blocking = false; | |
1783 | 1039 CompileQueue* queue = compile_queue(comp_level); |
0 | 1040 |
1041 // Acquire our lock. | |
1042 { | |
1783 | 1043 MutexLocker locker(queue->lock(), THREAD); |
0 | 1044 |
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1045 if (JavaThread::current()->is_compiling() && !BackgroundCompilation) { |
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1046 |
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1047 TRACE_graal_1("Recursive compile %s!", method->name_and_sig_as_C_string()); |
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1048 method->set_not_compilable(); |
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1049 return; |
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1050 } |
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1051 |
0 | 1052 // Make sure the method has not slipped into the queues since |
1053 // last we checked; note that those checks were "fast bail-outs". | |
1054 // Here we need to be more careful, see 14012000 below. | |
1055 if (compilation_is_in_queue(method, osr_bci)) { | |
1056 return; | |
1057 } | |
1058 | |
1059 // We need to check again to see if the compilation has | |
1060 // completed. A previous compilation may have registered | |
1061 // some result. | |
1062 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
1063 return; | |
1064 } | |
1065 | |
1066 // We now know that this compilation is not pending, complete, | |
1067 // or prohibited. Assign a compile_id to this compilation | |
1068 // and check to see if it is in our [Start..Stop) range. | |
1069 uint compile_id = assign_compile_id(method, osr_bci); | |
1070 if (compile_id == 0) { | |
1071 // The compilation falls outside the allowed range. | |
1072 return; | |
1073 } | |
1074 | |
1075 // Should this thread wait for completion of the compile? | |
1076 blocking = is_compile_blocking(method, osr_bci); | |
1077 | |
1078 // We will enter the compilation in the queue. | |
1079 // 14012000: Note that this sets the queued_for_compile bits in | |
1080 // the target method. We can now reason that a method cannot be | |
1081 // queued for compilation more than once, as follows: | |
1082 // Before a thread queues a task for compilation, it first acquires | |
1083 // the compile queue lock, then checks if the method's queued bits | |
1084 // are set or it has already been compiled. Thus there can not be two | |
1085 // instances of a compilation task for the same method on the | |
1086 // compilation queue. Consider now the case where the compilation | |
1087 // thread has already removed a task for that method from the queue | |
1088 // and is in the midst of compiling it. In this case, the | |
1089 // queued_for_compile bits must be set in the method (and these | |
1090 // will be visible to the current thread, since the bits were set | |
1091 // under protection of the compile queue lock, which we hold now. | |
1092 // When the compilation completes, the compiler thread first sets | |
1093 // the compilation result and then clears the queued_for_compile | |
1094 // bits. Neither of these actions are protected by a barrier (or done | |
1095 // under the protection of a lock), so the only guarantee we have | |
1096 // (on machines with TSO (Total Store Order)) is that these values | |
1097 // will update in that order. As a result, the only combinations of | |
1098 // these bits that the current thread will see are, in temporal order: | |
1099 // <RESULT, QUEUE> : | |
1100 // <0, 1> : in compile queue, but not yet compiled | |
1101 // <1, 1> : compiled but queue bit not cleared | |
1102 // <1, 0> : compiled and queue bit cleared | |
1103 // Because we first check the queue bits then check the result bits, | |
1104 // we are assured that we cannot introduce a duplicate task. | |
1105 // Note that if we did the tests in the reverse order (i.e. check | |
1106 // result then check queued bit), we could get the result bit before | |
1107 // the compilation completed, and the queue bit after the compilation | |
1108 // completed, and end up introducing a "duplicate" (redundant) task. | |
1109 // In that case, the compiler thread should first check if a method | |
1110 // has already been compiled before trying to compile it. | |
1111 // NOTE: in the event that there are multiple compiler threads and | |
1112 // there is de-optimization/recompilation, things will get hairy, | |
1113 // and in that case it's best to protect both the testing (here) of | |
1114 // these bits, and their updating (here and elsewhere) under a | |
1115 // common lock. | |
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1116 /*task = create_compile_task(queue, |
0 | 1117 compile_id, method, |
1118 osr_bci, comp_level, | |
1119 hot_method, hot_count, comment, | |
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1120 blocking);*/ |
0 | 1121 } |
1122 | |
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1123 if (!JavaThread::current()->is_compiling()) { |
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1124 method->set_queued_for_compilation(); |
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1125 GraalCompiler::instance()->compile_method(method, osr_bci, blocking); |
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1126 } else { |
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1127 // Recursive compile request => ignore. |
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1128 } |
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1129 |
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1130 /*if (blocking) { |
0 | 1131 wait_for_completion(task); |
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1132 }*/ |
0 | 1133 } |
1134 | |
1135 | |
1136 nmethod* CompileBroker::compile_method(methodHandle method, int osr_bci, | |
1783 | 1137 int comp_level, |
0 | 1138 methodHandle hot_method, int hot_count, |
1139 const char* comment, TRAPS) { | |
1140 // make sure arguments make sense | |
1141 assert(method->method_holder()->klass_part()->oop_is_instance(), "not an instance method"); | |
1142 assert(osr_bci == InvocationEntryBci || (0 <= osr_bci && osr_bci < method->code_size()), "bci out of range"); | |
1143 assert(!method->is_abstract() && (osr_bci == InvocationEntryBci || !method->is_native()), "cannot compile abstract/native methods"); | |
1144 assert(!instanceKlass::cast(method->method_holder())->is_not_initialized(), "method holder must be initialized"); | |
1145 | |
1783 | 1146 if (!TieredCompilation) { |
1147 comp_level = CompLevel_highest_tier; | |
0 | 1148 } |
1149 | |
1150 // return quickly if possible | |
1151 | |
1152 // lock, make sure that the compilation | |
1153 // isn't prohibited in a straightforward way. | |
1154 | |
1155 if (compiler(comp_level) == NULL || compilation_is_prohibited(method, osr_bci, comp_level)) { | |
1156 return NULL; | |
1157 } | |
1158 | |
1159 if (osr_bci == InvocationEntryBci) { | |
1160 // standard compilation | |
1161 nmethod* method_code = method->code(); | |
1783 | 1162 if (method_code != NULL) { |
1163 if (compilation_is_complete(method, osr_bci, comp_level)) { | |
1164 return method_code; | |
1165 } | |
0 | 1166 } |
1167 if (method->is_not_compilable(comp_level)) return NULL; | |
1202 | 1168 |
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1169 if (UseCodeCacheFlushing) { |
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1170 nmethod* saved = CodeCache::find_and_remove_saved_code(method()); |
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1171 if (saved != NULL) { |
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|
1172 method->set_code(method, saved); |
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1173 return saved; |
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|
1174 } |
1202 | 1175 } |
1176 | |
0 | 1177 } else { |
1178 // osr compilation | |
1179 #ifndef TIERED | |
1180 // seems like an assert of dubious value | |
1783 | 1181 assert(comp_level == CompLevel_highest_tier, |
0 | 1182 "all OSR compiles are assumed to be at a single compilation lavel"); |
1183 #endif // TIERED | |
1783 | 1184 // We accept a higher level osr method |
1185 nmethod* nm = method->lookup_osr_nmethod_for(osr_bci, comp_level, false); | |
0 | 1186 if (nm != NULL) return nm; |
1187 if (method->is_not_osr_compilable()) return NULL; | |
1188 } | |
1189 | |
1190 assert(!HAS_PENDING_EXCEPTION, "No exception should be present"); | |
1191 // some prerequisites that are compiler specific | |
2447 | 1192 if (compiler(comp_level)->is_c2() || compiler(comp_level)->is_shark()) { |
0 | 1193 method->constants()->resolve_string_constants(CHECK_0); |
1194 // Resolve all classes seen in the signature of the method | |
1195 // we are compiling. | |
1196 methodOopDesc::load_signature_classes(method, CHECK_0); | |
1197 } | |
1198 | |
1199 // If the method is native, do the lookup in the thread requesting | |
1200 // the compilation. Native lookups can load code, which is not | |
1201 // permitted during compilation. | |
1202 // | |
1203 // Note: A native method implies non-osr compilation which is | |
1204 // checked with an assertion at the entry of this method. | |
1205 if (method->is_native()) { | |
1206 bool in_base_library; | |
1207 address adr = NativeLookup::lookup(method, in_base_library, THREAD); | |
1208 if (HAS_PENDING_EXCEPTION) { | |
1209 // In case of an exception looking up the method, we just forget | |
1210 // about it. The interpreter will kick-in and throw the exception. | |
1211 method->set_not_compilable(); // implies is_not_osr_compilable() | |
1212 CLEAR_PENDING_EXCEPTION; | |
1213 return NULL; | |
1214 } | |
1215 assert(method->has_native_function(), "must have native code by now"); | |
1216 } | |
1217 | |
1218 // RedefineClasses() has replaced this method; just return | |
1219 if (method->is_old()) { | |
1220 return NULL; | |
1221 } | |
1222 | |
1223 // JVMTI -- post_compile_event requires jmethod_id() that may require | |
1224 // a lock the compiling thread can not acquire. Prefetch it here. | |
1225 if (JvmtiExport::should_post_compiled_method_load()) { | |
1226 method->jmethod_id(); | |
1227 } | |
1228 | |
1202 | 1229 // If the compiler is shut off due to code cache flushing or otherwise, |
1230 // fail out now so blocking compiles dont hang the java thread | |
1231 if (!should_compile_new_jobs() || (UseCodeCacheFlushing && CodeCache::needs_flushing())) { | |
1783 | 1232 CompilationPolicy::policy()->delay_compilation(method()); |
1202 | 1233 return NULL; |
1234 } | |
1235 | |
0 | 1236 // do the compilation |
1237 if (method->is_native()) { | |
1238 if (!PreferInterpreterNativeStubs) { | |
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1239 // Acquire our lock. |
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1240 int compile_id; |
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|
1241 { |
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1242 MutexLocker locker(MethodCompileQueue_lock, THREAD); |
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1243 compile_id = assign_compile_id(method, standard_entry_bci); |
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1244 } |
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1245 (void) AdapterHandlerLibrary::create_native_wrapper(method, compile_id); |
0 | 1246 } else { |
1247 return NULL; | |
1248 } | |
1249 } else { | |
1250 compile_method_base(method, osr_bci, comp_level, hot_method, hot_count, comment, CHECK_0); | |
1251 } | |
1252 | |
1253 // return requested nmethod | |
1783 | 1254 // We accept a higher level osr method |
1255 return osr_bci == InvocationEntryBci ? method->code() : method->lookup_osr_nmethod_for(osr_bci, comp_level, false); | |
0 | 1256 } |
1257 | |
1258 | |
1259 // ------------------------------------------------------------------ | |
1260 // CompileBroker::compilation_is_complete | |
1261 // | |
1262 // See if compilation of this method is already complete. | |
1263 bool CompileBroker::compilation_is_complete(methodHandle method, | |
1264 int osr_bci, | |
1265 int comp_level) { | |
1266 bool is_osr = (osr_bci != standard_entry_bci); | |
1267 if (is_osr) { | |
1268 if (method->is_not_osr_compilable()) { | |
1269 return true; | |
1270 } else { | |
1783 | 1271 nmethod* result = method->lookup_osr_nmethod_for(osr_bci, comp_level, true); |
0 | 1272 return (result != NULL); |
1273 } | |
1274 } else { | |
1275 if (method->is_not_compilable(comp_level)) { | |
1276 return true; | |
1277 } else { | |
1278 nmethod* result = method->code(); | |
1279 if (result == NULL) return false; | |
1783 | 1280 return comp_level == result->comp_level(); |
0 | 1281 } |
1282 } | |
1283 } | |
1284 | |
1285 | |
1286 // ------------------------------------------------------------------ | |
1287 // CompileBroker::compilation_is_in_queue | |
1288 // | |
1289 // See if this compilation is already requested. | |
1290 // | |
1291 // Implementation note: there is only a single "is in queue" bit | |
1292 // for each method. This means that the check below is overly | |
1293 // conservative in the sense that an osr compilation in the queue | |
1294 // will block a normal compilation from entering the queue (and vice | |
1295 // versa). This can be remedied by a full queue search to disambiguate | |
1296 // cases. If it is deemed profitible, this may be done. | |
1297 bool CompileBroker::compilation_is_in_queue(methodHandle method, | |
1783 | 1298 int osr_bci) { |
0 | 1299 return method->queued_for_compilation(); |
1300 } | |
1301 | |
1302 // ------------------------------------------------------------------ | |
1303 // CompileBroker::compilation_is_prohibited | |
1304 // | |
1305 // See if this compilation is not allowed. | |
1306 bool CompileBroker::compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level) { | |
1307 bool is_native = method->is_native(); | |
1308 // Some compilers may not support the compilation of natives. | |
1309 if (is_native && | |
1310 (!CICompileNatives || !compiler(comp_level)->supports_native())) { | |
1783 | 1311 method->set_not_compilable_quietly(comp_level); |
0 | 1312 return true; |
1313 } | |
1314 | |
1315 bool is_osr = (osr_bci != standard_entry_bci); | |
1316 // Some compilers may not support on stack replacement. | |
1317 if (is_osr && | |
1318 (!CICompileOSR || !compiler(comp_level)->supports_osr())) { | |
1319 method->set_not_osr_compilable(); | |
1320 return true; | |
1321 } | |
1322 | |
1323 // The method may be explicitly excluded by the user. | |
1324 bool quietly; | |
1325 if (CompilerOracle::should_exclude(method, quietly)) { | |
1326 if (!quietly) { | |
1327 // This does not happen quietly... | |
1328 ResourceMark rm; | |
1329 tty->print("### Excluding %s:%s", | |
1330 method->is_native() ? "generation of native wrapper" : "compile", | |
1331 (method->is_static() ? " static" : "")); | |
1332 method->print_short_name(tty); | |
1333 tty->cr(); | |
1334 } | |
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1335 method->set_not_compilable_quietly(); |
0 | 1336 } |
1337 | |
1338 return false; | |
1339 } | |
1340 | |
1341 | |
1342 // ------------------------------------------------------------------ | |
1343 // CompileBroker::assign_compile_id | |
1344 // | |
1345 // Assign a serialized id number to this compilation request. If the | |
1346 // number falls out of the allowed range, return a 0. OSR | |
1347 // compilations may be numbered separately from regular compilations | |
1348 // if certain debugging flags are used. | |
1349 uint CompileBroker::assign_compile_id(methodHandle method, int osr_bci) { | |
1783 | 1350 assert(MethodCompileQueue_lock->owner() == Thread::current(), |
0 | 1351 "must hold the compilation queue lock"); |
1352 bool is_osr = (osr_bci != standard_entry_bci); | |
1353 uint id; | |
1354 if (CICountOSR && is_osr) { | |
1355 id = ++_osr_compilation_id; | |
1356 if ((uint)CIStartOSR <= id && id < (uint)CIStopOSR) { | |
1357 return id; | |
1358 } | |
1359 } else { | |
1360 id = ++_compilation_id; | |
1361 if ((uint)CIStart <= id && id < (uint)CIStop) { | |
1362 return id; | |
1363 } | |
1364 } | |
1365 | |
1366 // Method was not in the appropriate compilation range. | |
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1367 method->set_not_compilable_quietly(); |
0 | 1368 return 0; |
1369 } | |
1370 | |
1371 | |
1372 // ------------------------------------------------------------------ | |
1373 // CompileBroker::is_compile_blocking | |
1374 // | |
1375 // Should the current thread be blocked until this compilation request | |
1376 // has been fulfilled? | |
1377 bool CompileBroker::is_compile_blocking(methodHandle method, int osr_bci) { | |
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|
1378 assert(!instanceRefKlass::owns_pending_list_lock(JavaThread::current()), "possible deadlock"); |
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1379 return !BackgroundCompilation; |
0 | 1380 } |
1381 | |
1382 | |
1383 // ------------------------------------------------------------------ | |
1384 // CompileBroker::preload_classes | |
1385 void CompileBroker::preload_classes(methodHandle method, TRAPS) { | |
1386 // Move this code over from c1_Compiler.cpp | |
1387 ShouldNotReachHere(); | |
1388 } | |
1389 | |
1390 | |
1391 // ------------------------------------------------------------------ | |
1392 // CompileBroker::create_compile_task | |
1393 // | |
1394 // Create a CompileTask object representing the current request for | |
1395 // compilation. Add this task to the queue. | |
1396 CompileTask* CompileBroker::create_compile_task(CompileQueue* queue, | |
1397 int compile_id, | |
1398 methodHandle method, | |
1399 int osr_bci, | |
1400 int comp_level, | |
1401 methodHandle hot_method, | |
1402 int hot_count, | |
1403 const char* comment, | |
1404 bool blocking) { | |
1405 CompileTask* new_task = allocate_task(); | |
1406 new_task->initialize(compile_id, method, osr_bci, comp_level, | |
1407 hot_method, hot_count, comment, | |
1408 blocking); | |
1409 queue->add(new_task); | |
1410 return new_task; | |
1411 } | |
1412 | |
1413 | |
1414 // ------------------------------------------------------------------ | |
1415 // CompileBroker::allocate_task | |
1416 // | |
1417 // Allocate a CompileTask, from the free list if possible. | |
1418 CompileTask* CompileBroker::allocate_task() { | |
1419 MutexLocker locker(CompileTaskAlloc_lock); | |
1420 CompileTask* task = NULL; | |
1421 if (_task_free_list != NULL) { | |
1422 task = _task_free_list; | |
1423 _task_free_list = task->next(); | |
1424 task->set_next(NULL); | |
1425 } else { | |
1426 task = new CompileTask(); | |
1427 task->set_next(NULL); | |
1428 } | |
1429 return task; | |
1430 } | |
1431 | |
1432 | |
1433 // ------------------------------------------------------------------ | |
1434 // CompileBroker::free_task | |
1435 // | |
1436 // Add a task to the free list. | |
1437 void CompileBroker::free_task(CompileTask* task) { | |
1438 MutexLocker locker(CompileTaskAlloc_lock); | |
1439 task->free(); | |
1440 task->set_next(_task_free_list); | |
1441 _task_free_list = task; | |
1442 } | |
1443 | |
1444 | |
1445 // ------------------------------------------------------------------ | |
1446 // CompileBroker::wait_for_completion | |
1447 // | |
1448 // Wait for the given method CompileTask to complete. | |
1449 void CompileBroker::wait_for_completion(CompileTask* task) { | |
1450 if (CIPrintCompileQueue) { | |
1451 tty->print_cr("BLOCKING FOR COMPILE"); | |
1452 } | |
1453 | |
1454 assert(task->is_blocking(), "can only wait on blocking task"); | |
1455 | |
1456 JavaThread *thread = JavaThread::current(); | |
1457 thread->set_blocked_on_compilation(true); | |
1458 | |
1459 methodHandle method(thread, | |
1460 (methodOop)JNIHandles::resolve(task->method_handle())); | |
1461 { | |
1462 MutexLocker waiter(task->lock(), thread); | |
1463 | |
1464 while (!task->is_complete()) | |
1465 task->lock()->wait(); | |
1466 } | |
1467 // It is harmless to check this status without the lock, because | |
1468 // completion is a stable property (until the task object is recycled). | |
1469 assert(task->is_complete(), "Compilation should have completed"); | |
1470 assert(task->code_handle() == NULL, "must be reset"); | |
1471 | |
1472 thread->set_blocked_on_compilation(false); | |
1473 | |
1474 // By convention, the waiter is responsible for recycling a | |
1475 // blocking CompileTask. Since there is only one waiter ever | |
1476 // waiting on a CompileTask, we know that no one else will | |
1477 // be using this CompileTask; we can free it. | |
1478 free_task(task); | |
1479 } | |
1480 | |
1481 // ------------------------------------------------------------------ | |
1482 // CompileBroker::compiler_thread_loop | |
1483 // | |
1484 // The main loop run by a CompilerThread. | |
1485 void CompileBroker::compiler_thread_loop() { | |
1486 CompilerThread* thread = CompilerThread::current(); | |
1487 CompileQueue* queue = thread->queue(); | |
1488 | |
1489 // For the thread that initializes the ciObjectFactory | |
1490 // this resource mark holds all the shared objects | |
1491 ResourceMark rm; | |
1492 | |
1493 // First thread to get here will initialize the compiler interface | |
1494 | |
1495 if (!ciObjectFactory::is_initialized()) { | |
1496 ASSERT_IN_VM; | |
1497 MutexLocker only_one (CompileThread_lock, thread); | |
1498 if (!ciObjectFactory::is_initialized()) { | |
1499 ciObjectFactory::initialize(); | |
1500 } | |
1501 } | |
1502 | |
1503 // Open a log. | |
1504 if (LogCompilation) { | |
1505 init_compiler_thread_log(); | |
1506 } | |
1507 CompileLog* log = thread->log(); | |
1508 if (log != NULL) { | |
1509 log->begin_elem("start_compile_thread thread='" UINTX_FORMAT "' process='%d'", | |
1510 os::current_thread_id(), | |
1511 os::current_process_id()); | |
1512 log->stamp(); | |
1513 log->end_elem(); | |
1514 } | |
1515 | |
1516 while (true) { | |
1517 { | |
1518 // We need this HandleMark to avoid leaking VM handles. | |
1519 HandleMark hm(thread); | |
1202 | 1520 |
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1521 if (CodeCache::largest_free_block() < CodeCacheMinimumFreeSpace) { |
1202 | 1522 // the code cache is really full |
1523 handle_full_code_cache(); | |
1524 } else if (UseCodeCacheFlushing && CodeCache::needs_flushing()) { | |
1525 // Attempt to start cleaning the code cache while there is still a little headroom | |
1526 NMethodSweeper::handle_full_code_cache(false); | |
0 | 1527 } |
1528 | |
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1529 CompileTask* task = queue->get(); |
0 | 1530 |
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1531 // Give compiler threads an extra quanta. They tend to be bursty and |
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1532 // this helps the compiler to finish up the job. |
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1533 if( CompilerThreadHintNoPreempt ) |
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1534 os::hint_no_preempt(); |
0 | 1535 |
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1536 // trace per thread time and compile statistics |
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1537 CompilerCounters* counters = ((CompilerThread*)thread)->counters(); |
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1538 PerfTraceTimedEvent(counters->time_counter(), counters->compile_counter()); |
0 | 1539 |
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1540 // Assign the task to the current thread. Mark this compilation |
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1541 // thread as active for the profiler. |
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1542 CompileTaskWrapper ctw(task); |
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1543 nmethodLocker result_handle; // (handle for the nmethod produced by this task) |
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1544 task->set_code_handle(&result_handle); |
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1545 methodHandle method(thread, |
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1546 (methodOop)JNIHandles::resolve(task->method_handle())); |
0 | 1547 |
4139
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4137
diff
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|
1548 // Never compile a method if breakpoints are present in it |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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|
1549 if (method()->number_of_breakpoints() == 0) { |
feb590a8497f
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4137
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|
1550 // Compile the method. |
feb590a8497f
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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4137
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|
1551 if ((UseCompiler || AlwaysCompileLoopMethods) && CompileBroker::should_compile_new_jobs()) { |
feb590a8497f
remove pollJavaQueue and related functionality, minimize diff against HotSpot in the compileBroker.
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|
1552 #ifdef COMPILER1 |
feb590a8497f
remove pollJavaQueue and related functionality, minimize diff against HotSpot in the compileBroker.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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4137
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|
1553 // Allow repeating compilations for the purpose of benchmarking |
feb590a8497f
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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|
1554 // compile speed. This is not useful for customers. |
feb590a8497f
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|
1555 if (CompilationRepeat != 0) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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|
1556 int compile_count = CompilationRepeat; |
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remove pollJavaQueue and related functionality, minimize diff against HotSpot in the compileBroker.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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4137
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|
1557 while (compile_count > 0) { |
feb590a8497f
remove pollJavaQueue and related functionality, minimize diff against HotSpot in the compileBroker.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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4137
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|
1558 invoke_compiler_on_method(task); |
feb590a8497f
remove pollJavaQueue and related functionality, minimize diff against HotSpot in the compileBroker.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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|
1559 nmethod* nm = method->code(); |
feb590a8497f
remove pollJavaQueue and related functionality, minimize diff against HotSpot in the compileBroker.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
4137
diff
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|
1560 if (nm != NULL) { |
feb590a8497f
remove pollJavaQueue and related functionality, minimize diff against HotSpot in the compileBroker.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
4137
diff
changeset
|
1561 nm->make_zombie(); |
feb590a8497f
remove pollJavaQueue and related functionality, minimize diff against HotSpot in the compileBroker.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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4137
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|
1562 method->clear_code(); |
0 | 1563 } |
4139
feb590a8497f
remove pollJavaQueue and related functionality, minimize diff against HotSpot in the compileBroker.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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diff
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|
1564 compile_count--; |
0 | 1565 } |
1566 } | |
4139
feb590a8497f
remove pollJavaQueue and related functionality, minimize diff against HotSpot in the compileBroker.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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|
1567 #endif /* COMPILER1 */ |
feb590a8497f
remove pollJavaQueue and related functionality, minimize diff against HotSpot in the compileBroker.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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|
1568 invoke_compiler_on_method(task); |
feb590a8497f
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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|
1569 } else { |
feb590a8497f
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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|
1570 // After compilation is disabled, remove remaining methods from queue |
feb590a8497f
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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|
1571 method->clear_queued_for_compilation(); |
0 | 1572 } |
1573 } | |
1574 } | |
1575 } | |
1576 } | |
1577 | |
1578 | |
1579 // ------------------------------------------------------------------ | |
1580 // CompileBroker::init_compiler_thread_log | |
1581 // | |
1582 // Set up state required by +LogCompilation. | |
1583 void CompileBroker::init_compiler_thread_log() { | |
1584 CompilerThread* thread = CompilerThread::current(); | |
1585 char fileBuf[4*K]; | |
1586 FILE* fp = NULL; | |
1587 char* file = NULL; | |
1588 intx thread_id = os::current_thread_id(); | |
1589 for (int try_temp_dir = 1; try_temp_dir >= 0; try_temp_dir--) { | |
1590 const char* dir = (try_temp_dir ? os::get_temp_directory() : NULL); | |
1353
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6938627: Make temporary directory use property java.io.tmpdir when specified
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diff
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|
1591 if (dir == NULL) { |
a2ea687fdc7c
6938627: Make temporary directory use property java.io.tmpdir when specified
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|
1592 jio_snprintf(fileBuf, sizeof(fileBuf), "hs_c" UINTX_FORMAT "_pid%u.log", |
a2ea687fdc7c
6938627: Make temporary directory use property java.io.tmpdir when specified
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1593 thread_id, os::current_process_id()); |
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diff
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|
1594 } else { |
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diff
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|
1595 jio_snprintf(fileBuf, sizeof(fileBuf), |
a2ea687fdc7c
6938627: Make temporary directory use property java.io.tmpdir when specified
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1300
diff
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|
1596 "%s%shs_c" UINTX_FORMAT "_pid%u.log", dir, |
a2ea687fdc7c
6938627: Make temporary directory use property java.io.tmpdir when specified
coleenp
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1300
diff
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|
1597 os::file_separator(), thread_id, os::current_process_id()); |
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6938627: Make temporary directory use property java.io.tmpdir when specified
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diff
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|
1598 } |
0 | 1599 fp = fopen(fileBuf, "at"); |
1600 if (fp != NULL) { | |
1601 file = NEW_C_HEAP_ARRAY(char, strlen(fileBuf)+1); | |
1602 strcpy(file, fileBuf); | |
1603 break; | |
1604 } | |
1605 } | |
1606 if (fp == NULL) { | |
1607 warning("Cannot open log file: %s", fileBuf); | |
1608 } else { | |
1609 if (LogCompilation && Verbose) | |
1610 tty->print_cr("Opening compilation log %s", file); | |
1611 CompileLog* log = new(ResourceObj::C_HEAP) CompileLog(file, fp, thread_id); | |
1612 thread->init_log(log); | |
1613 | |
1614 if (xtty != NULL) { | |
1615 ttyLocker ttyl; | |
1616 | |
1617 // Record any per thread log files | |
1618 xtty->elem("thread_logfile thread='%d' filename='%s'", thread_id, file); | |
1619 } | |
1620 } | |
1621 } | |
1622 | |
1623 // ------------------------------------------------------------------ | |
1624 // CompileBroker::set_should_block | |
1625 // | |
1626 // Set _should_block. | |
1627 // Call this from the VM, with Threads_lock held and a safepoint requested. | |
1628 void CompileBroker::set_should_block() { | |
1629 assert(Threads_lock->owner() == Thread::current(), "must have threads lock"); | |
1630 assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint already"); | |
1631 #ifndef PRODUCT | |
1632 if (PrintCompilation && (Verbose || WizardMode)) | |
1633 tty->print_cr("notifying compiler thread pool to block"); | |
1634 #endif | |
1635 _should_block = true; | |
1636 } | |
1637 | |
1638 // ------------------------------------------------------------------ | |
1639 // CompileBroker::maybe_block | |
1640 // | |
1641 // Call this from the compiler at convenient points, to poll for _should_block. | |
1642 void CompileBroker::maybe_block() { | |
1643 if (_should_block) { | |
1644 #ifndef PRODUCT | |
1645 if (PrintCompilation && (Verbose || WizardMode)) | |
1646 tty->print_cr("compiler thread " INTPTR_FORMAT " poll detects block request", Thread::current()); | |
1647 #endif | |
1648 ThreadInVMfromNative tivfn(JavaThread::current()); | |
1649 } | |
1650 } | |
1651 | |
1652 | |
1653 // ------------------------------------------------------------------ | |
1654 // CompileBroker::invoke_compiler_on_method | |
1655 // | |
1656 // Compile a method. | |
1657 // | |
1658 void CompileBroker::invoke_compiler_on_method(CompileTask* task) { | |
1659 if (PrintCompilation) { | |
1660 ResourceMark rm; | |
1661 task->print_line(); | |
1662 } | |
1663 elapsedTimer time; | |
1664 | |
1665 CompilerThread* thread = CompilerThread::current(); | |
1666 ResourceMark rm(thread); | |
1667 | |
1668 // Common flags. | |
1669 uint compile_id = task->compile_id(); | |
1670 int osr_bci = task->osr_bci(); | |
1671 bool is_osr = (osr_bci != standard_entry_bci); | |
1672 bool should_log = (thread->log() != NULL); | |
1673 bool should_break = false; | |
1674 { | |
1675 // create the handle inside it's own block so it can't | |
1676 // accidentally be referenced once the thread transitions to | |
1677 // native. The NoHandleMark before the transition should catch | |
1678 // any cases where this occurs in the future. | |
1679 methodHandle method(thread, | |
1680 (methodOop)JNIHandles::resolve(task->method_handle())); | |
1681 should_break = check_break_at(method, compile_id, is_osr); | |
1682 if (should_log && !CompilerOracle::should_log(method)) { | |
1683 should_log = false; | |
1684 } | |
1685 assert(!method->is_native(), "no longer compile natives"); | |
1686 | |
1687 // Save information about this method in case of failure. | |
1688 set_last_compile(thread, method, is_osr, task->comp_level()); | |
1689 | |
1690 DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler(task->comp_level()), method); | |
1691 } | |
1692 | |
1693 // Allocate a new set of JNI handles. | |
1694 push_jni_handle_block(); | |
1695 jobject target_handle = JNIHandles::make_local(thread, JNIHandles::resolve(task->method_handle())); | |
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4137
diff
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|
1696 int compilable = ciEnv::MethodCompilable; |
feb590a8497f
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|
1697 { |
0 | 1698 int system_dictionary_modification_counter; |
1699 { | |
1700 MutexLocker locker(Compile_lock, thread); | |
1701 system_dictionary_modification_counter = SystemDictionary::number_of_modifications(); | |
1702 } | |
1703 | |
4139
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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diff
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|
1704 NoHandleMark nhm; |
0 | 1705 ThreadToNativeFromVM ttn(thread); |
1706 | |
1707 ciEnv ci_env(task, system_dictionary_modification_counter); | |
1708 if (should_break) { | |
1709 ci_env.set_break_at_compile(true); | |
1710 } | |
1711 if (should_log) { | |
1712 ci_env.set_log(thread->log()); | |
1713 } | |
1714 assert(thread->env() == &ci_env, "set by ci_env"); | |
1715 // The thread-env() field is cleared in ~CompileTaskWrapper. | |
1716 | |
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6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
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diff
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|
1717 // Cache Jvmti state |
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6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
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diff
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|
1718 ci_env.cache_jvmti_state(); |
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|
1719 |
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diff
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|
1720 // Cache DTrace flags |
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diff
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|
1721 ci_env.cache_dtrace_flags(); |
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6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
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diff
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|
1722 |
0 | 1723 ciMethod* target = ci_env.get_method_from_handle(target_handle); |
1724 | |
1725 TraceTime t1("compilation", &time); | |
1726 | |
1727 compiler(task->comp_level())->compile_method(&ci_env, target, osr_bci); | |
1728 | |
4139
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4137
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|
1729 if (!ci_env.failing() && task->code() == NULL) { |
0 | 1730 //assert(false, "compiler should always document failure"); |
1731 // The compiler elected, without comment, not to register a result. | |
1732 // Do not attempt further compilations of this method. | |
1964
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iveresov
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1783
diff
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|
1733 ci_env.record_method_not_compilable("compile failed", !TieredCompilation); |
4139
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diff
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|
1734 } |
0 | 1735 |
1736 if (ci_env.failing()) { | |
1737 // Copy this bit to the enclosing block: | |
1738 compilable = ci_env.compilable(); | |
1739 if (PrintCompilation) { | |
1740 const char* reason = ci_env.failure_reason(); | |
1741 if (compilable == ciEnv::MethodCompilable_not_at_tier) { | |
4047 | 1742 tty->print_cr("%4d COMPILE SKIPPED: %s (retry at different tier)", compile_id, reason); |
1964
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1783
diff
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|
1743 } else if (compilable == ciEnv::MethodCompilable_never) { |
4047 | 1744 tty->print_cr("%4d COMPILE SKIPPED: %s (not retryable)", compile_id, reason); |
0 | 1745 } else if (compilable == ciEnv::MethodCompilable) { |
4047 | 1746 tty->print_cr("%4d COMPILE SKIPPED: %s", compile_id, reason); |
0 | 1747 } |
1748 } | |
1749 } else { | |
1750 task->mark_success(); | |
1751 task->set_num_inlined_bytecodes(ci_env.num_inlined_bytecodes()); | |
1752 } | |
1753 } | |
1754 pop_jni_handle_block(); | |
1755 | |
1756 methodHandle method(thread, | |
1757 (methodOop)JNIHandles::resolve(task->method_handle())); | |
1758 | |
1759 DTRACE_METHOD_COMPILE_END_PROBE(compiler(task->comp_level()), method, task->is_success()); | |
1760 | |
1761 collect_statistics(thread, time, task); | |
1762 | |
4064
670a74b863fc
7107042: assert(no_dead_loop) failed: dead loop detected
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4047
diff
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|
1763 if (PrintCompilation && PrintCompilation2) { |
4047 | 1764 tty->print("%7d ", (int) tty->time_stamp().milliseconds()); // print timestamp |
1765 tty->print("%4d ", compile_id); // print compilation number | |
1766 tty->print("%s ", (is_osr ? "%" : " ")); | |
4064
670a74b863fc
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|
1767 int code_size = (task->code() == NULL) ? 0 : task->code()->total_size(); |
4122
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4064
diff
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|
1768 tty->print_cr("size: %d time: %d inlined: %d bytes", code_size, (int)time.milliseconds(), task->num_inlined_bytecodes()); |
4047 | 1769 } |
1770 | |
0 | 1771 if (compilable == ciEnv::MethodCompilable_never) { |
1772 if (is_osr) { | |
1773 method->set_not_osr_compilable(); | |
1774 } else { | |
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1202
diff
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|
1775 method->set_not_compilable_quietly(); |
0 | 1776 } |
1777 } else if (compilable == ciEnv::MethodCompilable_not_at_tier) { | |
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|
1778 method->set_not_compilable_quietly(task->comp_level()); |
0 | 1779 } |
1780 | |
1781 // Note that the queued_for_compilation bits are cleared without | |
1782 // protection of a mutex. [They were set by the requester thread, | |
1783 // when adding the task to the complie queue -- at which time the | |
1784 // compile queue lock was held. Subsequently, we acquired the compile | |
1785 // queue lock to get this task off the compile queue; thus (to belabour | |
1786 // the point somewhat) our clearing of the bits must be occurring | |
1787 // only after the setting of the bits. See also 14012000 above. | |
1788 method->clear_queued_for_compilation(); | |
1789 | |
1790 #ifdef ASSERT | |
1791 if (CollectedHeap::fired_fake_oom()) { | |
1792 // The current compile received a fake OOM during compilation so | |
1793 // go ahead and exit the VM since the test apparently succeeded | |
1794 tty->print_cr("*** Shutting down VM after successful fake OOM"); | |
1795 vm_exit(0); | |
1796 } | |
1797 #endif | |
1798 } | |
1799 | |
1800 // ------------------------------------------------------------------ | |
1202 | 1801 // CompileBroker::handle_full_code_cache |
1802 // | |
1803 // The CodeCache is full. Print out warning and disable compilation or | |
1804 // try code cache cleaning so compilation can continue later. | |
1805 void CompileBroker::handle_full_code_cache() { | |
1806 UseInterpreter = true; | |
1807 if (UseCompiler || AlwaysCompileLoopMethods ) { | |
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1808 if (xtty != NULL) { |
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|
1809 stringStream s; |
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1810 // Dump code cache state into a buffer before locking the tty, |
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1811 // because log_state() will use locks causing lock conflicts. |
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|
1812 CodeCache::log_state(&s); |
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1813 // Lock to prevent tearing |
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|
1814 ttyLocker ttyl; |
1728
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|
1815 xtty->begin_elem("code_cache_full"); |
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|
1816 xtty->print(s.as_string()); |
1728
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diff
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|
1817 xtty->stamp(); |
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diff
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|
1818 xtty->end_elem(); |
1202 | 1819 } |
1578
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1538
diff
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|
1820 warning("CodeCache is full. Compiler has been disabled."); |
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diff
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|
1821 warning("Try increasing the code cache size using -XX:ReservedCodeCacheSize="); |
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|
1822 CodeCache::print_bounds(tty); |
1578
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1538
diff
changeset
|
1823 #ifndef PRODUCT |
1202 | 1824 if (CompileTheWorld || ExitOnFullCodeCache) { |
1825 before_exit(JavaThread::current()); | |
1826 exit_globals(); // will delete tty | |
1827 vm_direct_exit(CompileTheWorld ? 0 : 1); | |
1828 } | |
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diff
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|
1829 #endif |
1202 | 1830 if (UseCodeCacheFlushing) { |
1831 NMethodSweeper::handle_full_code_cache(true); | |
1832 } else { | |
1833 UseCompiler = false; | |
1834 AlwaysCompileLoopMethods = false; | |
1835 } | |
1836 } | |
1837 } | |
1838 | |
1839 // ------------------------------------------------------------------ | |
0 | 1840 // CompileBroker::set_last_compile |
1841 // | |
1842 // Record this compilation for debugging purposes. | |
1843 void CompileBroker::set_last_compile(CompilerThread* thread, methodHandle method, bool is_osr, int comp_level) { | |
1844 ResourceMark rm; | |
1845 char* method_name = method->name()->as_C_string(); | |
1846 strncpy(_last_method_compiled, method_name, CompileBroker::name_buffer_length); | |
1847 char current_method[CompilerCounters::cmname_buffer_length]; | |
1848 size_t maxLen = CompilerCounters::cmname_buffer_length; | |
1849 | |
1850 if (UsePerfData) { | |
1851 const char* class_name = method->method_holder()->klass_part()->name()->as_C_string(); | |
1852 | |
1853 size_t s1len = strlen(class_name); | |
1854 size_t s2len = strlen(method_name); | |
1855 | |
1856 // check if we need to truncate the string | |
1857 if (s1len + s2len + 2 > maxLen) { | |
1858 | |
1859 // the strategy is to lop off the leading characters of the | |
1860 // class name and the trailing characters of the method name. | |
1861 | |
1862 if (s2len + 2 > maxLen) { | |
1863 // lop of the entire class name string, let snprintf handle | |
1864 // truncation of the method name. | |
1865 class_name += s1len; // null string | |
1866 } | |
1867 else { | |
1868 // lop off the extra characters from the front of the class name | |
1869 class_name += ((s1len + s2len + 2) - maxLen); | |
1870 } | |
1871 } | |
1872 | |
1873 jio_snprintf(current_method, maxLen, "%s %s", class_name, method_name); | |
1874 } | |
1875 | |
1876 if (CICountOSR && is_osr) { | |
1877 _last_compile_type = osr_compile; | |
1878 } else { | |
1879 _last_compile_type = normal_compile; | |
1880 } | |
1881 _last_compile_level = comp_level; | |
1882 | |
1883 if (UsePerfData) { | |
1884 CompilerCounters* counters = thread->counters(); | |
1885 counters->set_current_method(current_method); | |
1886 counters->set_compile_type((jlong)_last_compile_type); | |
1887 } | |
1888 } | |
1889 | |
1890 | |
1891 // ------------------------------------------------------------------ | |
1892 // CompileBroker::push_jni_handle_block | |
1893 // | |
1894 // Push on a new block of JNI handles. | |
1895 void CompileBroker::push_jni_handle_block() { | |
1896 JavaThread* thread = JavaThread::current(); | |
1897 | |
1898 // Allocate a new block for JNI handles. | |
1899 // Inlined code from jni_PushLocalFrame() | |
1900 JNIHandleBlock* java_handles = thread->active_handles(); | |
1901 JNIHandleBlock* compile_handles = JNIHandleBlock::allocate_block(thread); | |
1902 assert(compile_handles != NULL && java_handles != NULL, "should not be NULL"); | |
1903 compile_handles->set_pop_frame_link(java_handles); // make sure java handles get gc'd. | |
1904 thread->set_active_handles(compile_handles); | |
1905 } | |
1906 | |
1907 | |
1908 // ------------------------------------------------------------------ | |
1909 // CompileBroker::pop_jni_handle_block | |
1910 // | |
1911 // Pop off the current block of JNI handles. | |
1912 void CompileBroker::pop_jni_handle_block() { | |
1913 JavaThread* thread = JavaThread::current(); | |
1914 | |
1915 // Release our JNI handle block | |
1916 JNIHandleBlock* compile_handles = thread->active_handles(); | |
1917 JNIHandleBlock* java_handles = compile_handles->pop_frame_link(); | |
1918 thread->set_active_handles(java_handles); | |
1919 compile_handles->set_pop_frame_link(NULL); | |
1920 JNIHandleBlock::release_block(compile_handles, thread); // may block | |
1921 } | |
1922 | |
1923 | |
1924 // ------------------------------------------------------------------ | |
1925 // CompileBroker::check_break_at | |
1926 // | |
1927 // Should the compilation break at the current compilation. | |
1928 bool CompileBroker::check_break_at(methodHandle method, int compile_id, bool is_osr) { | |
1929 if (CICountOSR && is_osr && (compile_id == CIBreakAtOSR)) { | |
1930 return true; | |
1931 } else if( CompilerOracle::should_break_at(method) ) { // break when compiling | |
1932 return true; | |
1933 } else { | |
1934 return (compile_id == CIBreakAt); | |
1935 } | |
1936 } | |
1937 | |
1938 // ------------------------------------------------------------------ | |
1939 // CompileBroker::collect_statistics | |
1940 // | |
1941 // Collect statistics about the compilation. | |
1942 | |
1943 void CompileBroker::collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task) { | |
1944 bool success = task->is_success(); | |
1945 methodHandle method (thread, (methodOop)JNIHandles::resolve(task->method_handle())); | |
1946 uint compile_id = task->compile_id(); | |
1947 bool is_osr = (task->osr_bci() != standard_entry_bci); | |
1948 nmethod* code = task->code(); | |
1949 CompilerCounters* counters = thread->counters(); | |
1950 | |
1951 assert(code == NULL || code->is_locked_by_vm(), "will survive the MutexLocker"); | |
1952 MutexLocker locker(CompileStatistics_lock); | |
1953 | |
1954 // _perf variables are production performance counters which are | |
1955 // updated regardless of the setting of the CITime and CITimeEach flags | |
1956 // | |
1957 if (!success) { | |
1958 _total_bailout_count++; | |
1959 if (UsePerfData) { | |
1960 _perf_last_failed_method->set_value(counters->current_method()); | |
1961 _perf_last_failed_type->set_value(counters->compile_type()); | |
1962 _perf_total_bailout_count->inc(); | |
1963 } | |
1964 } else if (code == NULL) { | |
1965 if (UsePerfData) { | |
1966 _perf_last_invalidated_method->set_value(counters->current_method()); | |
1967 _perf_last_invalidated_type->set_value(counters->compile_type()); | |
1968 _perf_total_invalidated_count->inc(); | |
1969 } | |
1970 _total_invalidated_count++; | |
1971 } else { | |
1972 // Compilation succeeded | |
1973 | |
1974 // update compilation ticks - used by the implementation of | |
1975 // java.lang.management.CompilationMBean | |
1976 _perf_total_compilation->inc(time.ticks()); | |
1977 | |
1978 if (CITime) { | |
1979 _t_total_compilation.add(time); | |
1980 if (is_osr) { | |
1981 _t_osr_compilation.add(time); | |
1982 _sum_osr_bytes_compiled += method->code_size() + task->num_inlined_bytecodes(); | |
1983 } else { | |
1984 _t_standard_compilation.add(time); | |
1985 _sum_standard_bytes_compiled += method->code_size() + task->num_inlined_bytecodes(); | |
1986 } | |
1987 } | |
1988 | |
1989 if (UsePerfData) { | |
1990 // save the name of the last method compiled | |
1991 _perf_last_method->set_value(counters->current_method()); | |
1992 _perf_last_compile_type->set_value(counters->compile_type()); | |
1993 _perf_last_compile_size->set_value(method->code_size() + | |
1994 task->num_inlined_bytecodes()); | |
1995 if (is_osr) { | |
1996 _perf_osr_compilation->inc(time.ticks()); | |
1997 _perf_sum_osr_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes()); | |
1998 } else { | |
1999 _perf_standard_compilation->inc(time.ticks()); | |
2000 _perf_sum_standard_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes()); | |
2001 } | |
2002 } | |
2003 | |
2004 if (CITimeEach) { | |
2005 float bytes_per_sec = 1.0 * (method->code_size() + task->num_inlined_bytecodes()) / time.seconds(); | |
2006 tty->print_cr("%3d seconds: %f bytes/sec : %f (bytes %d + %d inlined)", | |
2007 compile_id, time.seconds(), bytes_per_sec, method->code_size(), task->num_inlined_bytecodes()); | |
2008 } | |
2009 | |
2010 // Collect counts of successful compilations | |
1748 | 2011 _sum_nmethod_size += code->total_size(); |
2012 _sum_nmethod_code_size += code->insts_size(); | |
0 | 2013 _total_compile_count++; |
2014 | |
2015 if (UsePerfData) { | |
1748 | 2016 _perf_sum_nmethod_size->inc( code->total_size()); |
2017 _perf_sum_nmethod_code_size->inc(code->insts_size()); | |
0 | 2018 _perf_total_compile_count->inc(); |
2019 } | |
2020 | |
2021 if (is_osr) { | |
2022 if (UsePerfData) _perf_total_osr_compile_count->inc(); | |
2023 _total_osr_compile_count++; | |
2024 } else { | |
2025 if (UsePerfData) _perf_total_standard_compile_count->inc(); | |
2026 _total_standard_compile_count++; | |
2027 } | |
2028 } | |
2029 // set the current method for the thread to null | |
2030 if (UsePerfData) counters->set_current_method(""); | |
2031 } | |
2032 | |
2033 | |
2034 | |
2035 void CompileBroker::print_times() { | |
2036 tty->cr(); | |
2037 tty->print_cr("Accumulated compiler times (for compiled methods only)"); | |
2038 tty->print_cr("------------------------------------------------"); | |
2039 //0000000000111111111122222222223333333333444444444455555555556666666666 | |
2040 //0123456789012345678901234567890123456789012345678901234567890123456789 | |
2041 tty->print_cr(" Total compilation time : %6.3f s", CompileBroker::_t_total_compilation.seconds()); | |
2042 tty->print_cr(" Standard compilation : %6.3f s, Average : %2.3f", | |
2043 CompileBroker::_t_standard_compilation.seconds(), | |
2044 CompileBroker::_t_standard_compilation.seconds() / CompileBroker::_total_standard_compile_count); | |
2045 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 | 2046 |
1783 | 2047 if (compiler(CompLevel_simple) != NULL) { |
2048 compiler(CompLevel_simple)->print_timers(); | |
0 | 2049 } |
1783 | 2050 if (compiler(CompLevel_full_optimization) != NULL) { |
2051 compiler(CompLevel_full_optimization)->print_timers(); | |
2052 } | |
0 | 2053 tty->cr(); |
2054 int tcb = CompileBroker::_sum_osr_bytes_compiled + CompileBroker::_sum_standard_bytes_compiled; | |
2055 tty->print_cr(" Total compiled bytecodes : %6d bytes", tcb); | |
2056 tty->print_cr(" Standard compilation : %6d bytes", CompileBroker::_sum_standard_bytes_compiled); | |
2057 tty->print_cr(" On stack replacement : %6d bytes", CompileBroker::_sum_osr_bytes_compiled); | |
2058 int bps = (int)(tcb / CompileBroker::_t_total_compilation.seconds()); | |
2059 tty->print_cr(" Average compilation speed: %6d bytes/s", bps); | |
2060 tty->cr(); | |
2061 tty->print_cr(" nmethod code size : %6d bytes", CompileBroker::_sum_nmethod_code_size); | |
2062 tty->print_cr(" nmethod total size : %6d bytes", CompileBroker::_sum_nmethod_size); | |
2063 } | |
2064 | |
2065 | |
2066 // Debugging output for failure | |
2067 void CompileBroker::print_last_compile() { | |
2068 if ( _last_compile_level != CompLevel_none && | |
2069 compiler(_last_compile_level) != NULL && | |
2070 _last_method_compiled != NULL && | |
2071 _last_compile_type != no_compile) { | |
2072 if (_last_compile_type == osr_compile) { | |
2073 tty->print_cr("Last parse: [osr]%d+++(%d) %s", | |
2074 _osr_compilation_id, _last_compile_level, _last_method_compiled); | |
2075 } else { | |
2076 tty->print_cr("Last parse: %d+++(%d) %s", | |
2077 _compilation_id, _last_compile_level, _last_method_compiled); | |
2078 } | |
2079 } | |
2080 } | |
2081 | |
2082 | |
2083 void CompileBroker::print_compiler_threads_on(outputStream* st) { | |
2084 #ifndef PRODUCT | |
2085 st->print_cr("Compiler thread printing unimplemented."); | |
2086 st->cr(); | |
2087 #endif | |
2088 } |