Mercurial > hg > truffle
annotate src/share/vm/runtime/advancedThresholdPolicy.cpp @ 10252:712a1e9c91f3
8013063: nsk/jvmti/RetransformClasses/retransform001 failed debug version on os::free
Summary: Clear out class_file_bytes so they aren't deallocated twice
Reviewed-by: dcubed, sspitsyn
author | coleenp |
---|---|
date | Tue, 07 May 2013 09:46:15 -0400 |
parents | aeaca88565e6 |
children | 91eba9f82325 |
rev | line source |
---|---|
2348 | 1 /* |
10105
aeaca88565e6
8010862: The Method counter fields used for profiling can be allocated lazily.
jiangli
parents:
6831
diff
changeset
|
2 * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. |
3358 | 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 * | |
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
20 * or visit www.oracle.com if you need additional information or have any | |
21 * questions. | |
22 * | |
23 */ | |
2348 | 24 |
25 #include "precompiled.hpp" | |
26 #include "runtime/advancedThresholdPolicy.hpp" | |
27 #include "runtime/simpleThresholdPolicy.inline.hpp" | |
28 | |
29 #ifdef TIERED | |
30 // Print an event. | |
31 void AdvancedThresholdPolicy::print_specific(EventType type, methodHandle mh, methodHandle imh, | |
32 int bci, CompLevel level) { | |
6800
9191895df19d
7200001: failed C1 OSR compile doesn't get recompiled with C2
twisti
parents:
6725
diff
changeset
|
33 tty->print(" rate="); |
2348 | 34 if (mh->prev_time() == 0) tty->print("n/a"); |
35 else tty->print("%f", mh->rate()); | |
36 | |
6800
9191895df19d
7200001: failed C1 OSR compile doesn't get recompiled with C2
twisti
parents:
6725
diff
changeset
|
37 tty->print(" k=%.2lf,%.2lf", threshold_scale(CompLevel_full_profile, Tier3LoadFeedback), |
9191895df19d
7200001: failed C1 OSR compile doesn't get recompiled with C2
twisti
parents:
6725
diff
changeset
|
38 threshold_scale(CompLevel_full_optimization, Tier4LoadFeedback)); |
2348 | 39 |
40 } | |
41 | |
42 void AdvancedThresholdPolicy::initialize() { | |
43 // Turn on ergonomic compiler count selection | |
44 if (FLAG_IS_DEFAULT(CICompilerCountPerCPU) && FLAG_IS_DEFAULT(CICompilerCount)) { | |
45 FLAG_SET_DEFAULT(CICompilerCountPerCPU, true); | |
46 } | |
47 int count = CICompilerCount; | |
48 if (CICompilerCountPerCPU) { | |
49 // Simple log n seems to grow too slowly for tiered, try something faster: log n * log log n | |
50 int log_cpu = log2_intptr(os::active_processor_count()); | |
51 int loglog_cpu = log2_intptr(MAX2(log_cpu, 1)); | |
52 count = MAX2(log_cpu * loglog_cpu, 1) * 3 / 2; | |
53 } | |
54 | |
55 set_c1_count(MAX2(count / 3, 1)); | |
56 set_c2_count(MAX2(count - count / 3, 1)); | |
57 | |
58 // Some inlining tuning | |
59 #ifdef X86 | |
60 if (FLAG_IS_DEFAULT(InlineSmallCode)) { | |
61 FLAG_SET_DEFAULT(InlineSmallCode, 2000); | |
62 } | |
63 #endif | |
64 | |
65 #ifdef SPARC | |
66 if (FLAG_IS_DEFAULT(InlineSmallCode)) { | |
67 FLAG_SET_DEFAULT(InlineSmallCode, 2500); | |
68 } | |
69 #endif | |
70 | |
71 | |
72 set_start_time(os::javaTimeMillis()); | |
73 } | |
74 | |
75 // update_rate() is called from select_task() while holding a compile queue lock. | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4825
diff
changeset
|
76 void AdvancedThresholdPolicy::update_rate(jlong t, Method* m) { |
10105
aeaca88565e6
8010862: The Method counter fields used for profiling can be allocated lazily.
jiangli
parents:
6831
diff
changeset
|
77 JavaThread* THREAD = JavaThread::current(); |
2348 | 78 if (is_old(m)) { |
79 // We don't remove old methods from the queue, | |
80 // so we can just zero the rate. | |
10105
aeaca88565e6
8010862: The Method counter fields used for profiling can be allocated lazily.
jiangli
parents:
6831
diff
changeset
|
81 m->set_rate(0, THREAD); |
2348 | 82 return; |
83 } | |
84 | |
85 // We don't update the rate if we've just came out of a safepoint. | |
86 // delta_s is the time since last safepoint in milliseconds. | |
87 jlong delta_s = t - SafepointSynchronize::end_of_last_safepoint(); | |
88 jlong delta_t = t - (m->prev_time() != 0 ? m->prev_time() : start_time()); // milliseconds since the last measurement | |
89 // How many events were there since the last time? | |
90 int event_count = m->invocation_count() + m->backedge_count(); | |
91 int delta_e = event_count - m->prev_event_count(); | |
92 | |
93 // We should be running for at least 1ms. | |
94 if (delta_s >= TieredRateUpdateMinTime) { | |
95 // And we must've taken the previous point at least 1ms before. | |
96 if (delta_t >= TieredRateUpdateMinTime && delta_e > 0) { | |
10105
aeaca88565e6
8010862: The Method counter fields used for profiling can be allocated lazily.
jiangli
parents:
6831
diff
changeset
|
97 m->set_prev_time(t, THREAD); |
aeaca88565e6
8010862: The Method counter fields used for profiling can be allocated lazily.
jiangli
parents:
6831
diff
changeset
|
98 m->set_prev_event_count(event_count, THREAD); |
aeaca88565e6
8010862: The Method counter fields used for profiling can be allocated lazily.
jiangli
parents:
6831
diff
changeset
|
99 m->set_rate((float)delta_e / (float)delta_t, THREAD); // Rate is events per millisecond |
2348 | 100 } else |
101 if (delta_t > TieredRateUpdateMaxTime && delta_e == 0) { | |
102 // If nothing happened for 25ms, zero the rate. Don't modify prev values. | |
10105
aeaca88565e6
8010862: The Method counter fields used for profiling can be allocated lazily.
jiangli
parents:
6831
diff
changeset
|
103 m->set_rate(0, THREAD); |
2348 | 104 } |
105 } | |
106 } | |
107 | |
108 // Check if this method has been stale from a given number of milliseconds. | |
109 // See select_task(). | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4825
diff
changeset
|
110 bool AdvancedThresholdPolicy::is_stale(jlong t, jlong timeout, Method* m) { |
2348 | 111 jlong delta_s = t - SafepointSynchronize::end_of_last_safepoint(); |
112 jlong delta_t = t - m->prev_time(); | |
113 if (delta_t > timeout && delta_s > timeout) { | |
114 int event_count = m->invocation_count() + m->backedge_count(); | |
115 int delta_e = event_count - m->prev_event_count(); | |
116 // Return true if there were no events. | |
117 return delta_e == 0; | |
118 } | |
119 return false; | |
120 } | |
121 | |
122 // We don't remove old methods from the compile queue even if they have | |
123 // very low activity. See select_task(). | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4825
diff
changeset
|
124 bool AdvancedThresholdPolicy::is_old(Method* method) { |
2348 | 125 return method->invocation_count() > 50000 || method->backedge_count() > 500000; |
126 } | |
127 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4825
diff
changeset
|
128 double AdvancedThresholdPolicy::weight(Method* method) { |
2348 | 129 return (method->rate() + 1) * ((method->invocation_count() + 1) * (method->backedge_count() + 1)); |
130 } | |
131 | |
132 // Apply heuristics and return true if x should be compiled before y | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4825
diff
changeset
|
133 bool AdvancedThresholdPolicy::compare_methods(Method* x, Method* y) { |
2348 | 134 if (x->highest_comp_level() > y->highest_comp_level()) { |
135 // recompilation after deopt | |
136 return true; | |
137 } else | |
138 if (x->highest_comp_level() == y->highest_comp_level()) { | |
139 if (weight(x) > weight(y)) { | |
140 return true; | |
141 } | |
142 } | |
143 return false; | |
144 } | |
145 | |
146 // Is method profiled enough? | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4825
diff
changeset
|
147 bool AdvancedThresholdPolicy::is_method_profiled(Method* method) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4825
diff
changeset
|
148 MethodData* mdo = method->method_data(); |
2348 | 149 if (mdo != NULL) { |
150 int i = mdo->invocation_count_delta(); | |
151 int b = mdo->backedge_count_delta(); | |
152 return call_predicate_helper<CompLevel_full_profile>(i, b, 1); | |
153 } | |
154 return false; | |
155 } | |
156 | |
157 // Called with the queue locked and with at least one element | |
158 CompileTask* AdvancedThresholdPolicy::select_task(CompileQueue* compile_queue) { | |
159 CompileTask *max_task = NULL; | |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6800
diff
changeset
|
160 Method* max_method = NULL; |
2348 | 161 jlong t = os::javaTimeMillis(); |
162 // Iterate through the queue and find a method with a maximum rate. | |
163 for (CompileTask* task = compile_queue->first(); task != NULL;) { | |
164 CompileTask* next_task = task->next(); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4825
diff
changeset
|
165 Method* method = task->method(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4825
diff
changeset
|
166 MethodData* mdo = method->method_data(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4825
diff
changeset
|
167 update_rate(t, method); |
2348 | 168 if (max_task == NULL) { |
169 max_task = task; | |
170 max_method = method; | |
171 } else { | |
172 // If a method has been stale for some time, remove it from the queue. | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4825
diff
changeset
|
173 if (is_stale(t, TieredCompileTaskTimeout, method) && !is_old(method)) { |
2348 | 174 if (PrintTieredEvents) { |
3791
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
175 print_event(REMOVE_FROM_QUEUE, method, method, task->osr_bci(), (CompLevel)task->comp_level()); |
2348 | 176 } |
177 CompileTaskWrapper ctw(task); // Frees the task | |
178 compile_queue->remove(task); | |
179 method->clear_queued_for_compilation(); | |
180 task = next_task; | |
181 continue; | |
182 } | |
183 | |
184 // Select a method with a higher rate | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4825
diff
changeset
|
185 if (compare_methods(method, max_method)) { |
2348 | 186 max_task = task; |
187 max_method = method; | |
188 } | |
189 } | |
190 task = next_task; | |
191 } | |
192 | |
3837
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
193 if (max_task->comp_level() == CompLevel_full_profile && TieredStopAtLevel > CompLevel_full_profile |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4825
diff
changeset
|
194 && is_method_profiled(max_method)) { |
2348 | 195 max_task->set_comp_level(CompLevel_limited_profile); |
196 if (PrintTieredEvents) { | |
3791
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
197 print_event(UPDATE_IN_QUEUE, max_method, max_method, max_task->osr_bci(), (CompLevel)max_task->comp_level()); |
2348 | 198 } |
199 } | |
200 | |
201 return max_task; | |
202 } | |
203 | |
204 double AdvancedThresholdPolicy::threshold_scale(CompLevel level, int feedback_k) { | |
205 double queue_size = CompileBroker::queue_size(level); | |
206 int comp_count = compiler_count(level); | |
207 double k = queue_size / (feedback_k * comp_count) + 1; | |
208 return k; | |
209 } | |
210 | |
211 // Call and loop predicates determine whether a transition to a higher | |
212 // compilation level should be performed (pointers to predicate functions | |
213 // are passed to common()). | |
214 // Tier?LoadFeedback is basically a coefficient that determines of | |
215 // how many methods per compiler thread can be in the queue before | |
216 // the threshold values double. | |
217 bool AdvancedThresholdPolicy::loop_predicate(int i, int b, CompLevel cur_level) { | |
218 switch(cur_level) { | |
219 case CompLevel_none: | |
220 case CompLevel_limited_profile: { | |
221 double k = threshold_scale(CompLevel_full_profile, Tier3LoadFeedback); | |
222 return loop_predicate_helper<CompLevel_none>(i, b, k); | |
223 } | |
224 case CompLevel_full_profile: { | |
225 double k = threshold_scale(CompLevel_full_optimization, Tier4LoadFeedback); | |
226 return loop_predicate_helper<CompLevel_full_profile>(i, b, k); | |
227 } | |
228 default: | |
229 return true; | |
230 } | |
231 } | |
232 | |
233 bool AdvancedThresholdPolicy::call_predicate(int i, int b, CompLevel cur_level) { | |
234 switch(cur_level) { | |
235 case CompLevel_none: | |
236 case CompLevel_limited_profile: { | |
237 double k = threshold_scale(CompLevel_full_profile, Tier3LoadFeedback); | |
238 return call_predicate_helper<CompLevel_none>(i, b, k); | |
239 } | |
240 case CompLevel_full_profile: { | |
241 double k = threshold_scale(CompLevel_full_optimization, Tier4LoadFeedback); | |
242 return call_predicate_helper<CompLevel_full_profile>(i, b, k); | |
243 } | |
244 default: | |
245 return true; | |
246 } | |
247 } | |
248 | |
249 // If a method is old enough and is still in the interpreter we would want to | |
250 // start profiling without waiting for the compiled method to arrive. | |
251 // We also take the load on compilers into the account. | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4825
diff
changeset
|
252 bool AdvancedThresholdPolicy::should_create_mdo(Method* method, CompLevel cur_level) { |
2348 | 253 if (cur_level == CompLevel_none && |
254 CompileBroker::queue_size(CompLevel_full_optimization) <= | |
255 Tier3DelayOn * compiler_count(CompLevel_full_optimization)) { | |
256 int i = method->invocation_count(); | |
257 int b = method->backedge_count(); | |
258 double k = Tier0ProfilingStartPercentage / 100.0; | |
259 return call_predicate_helper<CompLevel_none>(i, b, k) || loop_predicate_helper<CompLevel_none>(i, b, k); | |
260 } | |
261 return false; | |
262 } | |
263 | |
3791
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
264 // Inlining control: if we're compiling a profiled method with C1 and the callee |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
265 // is known to have OSRed in a C2 version, don't inline it. |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
266 bool AdvancedThresholdPolicy::should_not_inline(ciEnv* env, ciMethod* callee) { |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
267 CompLevel comp_level = (CompLevel)env->comp_level(); |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
268 if (comp_level == CompLevel_full_profile || |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
269 comp_level == CompLevel_limited_profile) { |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
270 return callee->highest_osr_comp_level() == CompLevel_full_optimization; |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
271 } |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
272 return false; |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
273 } |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
274 |
2348 | 275 // Create MDO if necessary. |
4825
20334ed5ed3c
7131259: compile_method and CompilationPolicy::event shouldn't be declared TRAPS
iveresov
parents:
4756
diff
changeset
|
276 void AdvancedThresholdPolicy::create_mdo(methodHandle mh, JavaThread* THREAD) { |
2348 | 277 if (mh->is_native() || mh->is_abstract() || mh->is_accessor()) return; |
278 if (mh->method_data() == NULL) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4825
diff
changeset
|
279 Method::build_interpreter_method_data(mh, CHECK_AND_CLEAR); |
2348 | 280 } |
281 } | |
282 | |
283 | |
284 /* | |
285 * Method states: | |
286 * 0 - interpreter (CompLevel_none) | |
287 * 1 - pure C1 (CompLevel_simple) | |
288 * 2 - C1 with invocation and backedge counting (CompLevel_limited_profile) | |
289 * 3 - C1 with full profiling (CompLevel_full_profile) | |
290 * 4 - C2 (CompLevel_full_optimization) | |
291 * | |
292 * Common state transition patterns: | |
293 * a. 0 -> 3 -> 4. | |
294 * The most common path. But note that even in this straightforward case | |
295 * profiling can start at level 0 and finish at level 3. | |
296 * | |
297 * b. 0 -> 2 -> 3 -> 4. | |
298 * This case occures when the load on C2 is deemed too high. So, instead of transitioning | |
299 * into state 3 directly and over-profiling while a method is in the C2 queue we transition to | |
300 * level 2 and wait until the load on C2 decreases. This path is disabled for OSRs. | |
301 * | |
302 * c. 0 -> (3->2) -> 4. | |
303 * In this case we enqueue a method for compilation at level 3, but the C1 queue is long enough | |
304 * to enable the profiling to fully occur at level 0. In this case we change the compilation level | |
305 * of the method to 2, because it'll allow it to run much faster without full profiling while c2 | |
306 * is compiling. | |
307 * | |
308 * d. 0 -> 3 -> 1 or 0 -> 2 -> 1. | |
309 * After a method was once compiled with C1 it can be identified as trivial and be compiled to | |
310 * level 1. These transition can also occur if a method can't be compiled with C2 but can with C1. | |
311 * | |
312 * e. 0 -> 4. | |
313 * This can happen if a method fails C1 compilation (it will still be profiled in the interpreter) | |
314 * or because of a deopt that didn't require reprofiling (compilation won't happen in this case because | |
315 * the compiled version already exists). | |
316 * | |
317 * Note that since state 0 can be reached from any other state via deoptimization different loops | |
318 * are possible. | |
319 * | |
320 */ | |
321 | |
322 // Common transition function. Given a predicate determines if a method should transition to another level. | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4825
diff
changeset
|
323 CompLevel AdvancedThresholdPolicy::common(Predicate p, Method* method, CompLevel cur_level, bool disable_feedback) { |
2348 | 324 CompLevel next_level = cur_level; |
325 int i = method->invocation_count(); | |
326 int b = method->backedge_count(); | |
327 | |
3837
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
328 if (is_trivial(method)) { |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
329 next_level = CompLevel_simple; |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
330 } else { |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
331 switch(cur_level) { |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
332 case CompLevel_none: |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
333 // If we were at full profile level, would we switch to full opt? |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
334 if (common(p, method, CompLevel_full_profile, disable_feedback) == CompLevel_full_optimization) { |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
335 next_level = CompLevel_full_optimization; |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
336 } else if ((this->*p)(i, b, cur_level)) { |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
337 // C1-generated fully profiled code is about 30% slower than the limited profile |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
338 // code that has only invocation and backedge counters. The observation is that |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
339 // if C2 queue is large enough we can spend too much time in the fully profiled code |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
340 // while waiting for C2 to pick the method from the queue. To alleviate this problem |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
341 // we introduce a feedback on the C2 queue size. If the C2 queue is sufficiently long |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
342 // we choose to compile a limited profiled version and then recompile with full profiling |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
343 // when the load on C2 goes down. |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
344 if (!disable_feedback && CompileBroker::queue_size(CompLevel_full_optimization) > |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
345 Tier3DelayOn * compiler_count(CompLevel_full_optimization)) { |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
346 next_level = CompLevel_limited_profile; |
2348 | 347 } else { |
3837
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
348 next_level = CompLevel_full_profile; |
2348 | 349 } |
350 } | |
3837
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
351 break; |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
352 case CompLevel_limited_profile: |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
353 if (is_method_profiled(method)) { |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
354 // Special case: we got here because this method was fully profiled in the interpreter. |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
355 next_level = CompLevel_full_optimization; |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
356 } else { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4825
diff
changeset
|
357 MethodData* mdo = method->method_data(); |
3837
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
358 if (mdo != NULL) { |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
359 if (mdo->would_profile()) { |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
360 if (disable_feedback || (CompileBroker::queue_size(CompLevel_full_optimization) <= |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
361 Tier3DelayOff * compiler_count(CompLevel_full_optimization) && |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
362 (this->*p)(i, b, cur_level))) { |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
363 next_level = CompLevel_full_profile; |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
364 } |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
365 } else { |
2348 | 366 next_level = CompLevel_full_optimization; |
367 } | |
368 } | |
369 } | |
3837
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
370 break; |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
371 case CompLevel_full_profile: |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
372 { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4825
diff
changeset
|
373 MethodData* mdo = method->method_data(); |
3837
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
374 if (mdo != NULL) { |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
375 if (mdo->would_profile()) { |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
376 int mdo_i = mdo->invocation_count_delta(); |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
377 int mdo_b = mdo->backedge_count_delta(); |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
378 if ((this->*p)(mdo_i, mdo_b, cur_level)) { |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
379 next_level = CompLevel_full_optimization; |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
380 } |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
381 } else { |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
382 next_level = CompLevel_full_optimization; |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
383 } |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
384 } |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
385 } |
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
386 break; |
2348 | 387 } |
388 } | |
3837
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
389 return MIN2(next_level, (CompLevel)TieredStopAtLevel); |
2348 | 390 } |
391 | |
392 // Determine if a method should be compiled with a normal entry point at a different level. | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4825
diff
changeset
|
393 CompLevel AdvancedThresholdPolicy::call_event(Method* method, CompLevel cur_level) { |
3790
6f6e91603a45
7058689: Tiered: Reprofiling doesn't happen in presence of level 4 OSR methods
iveresov
parents:
3358
diff
changeset
|
394 CompLevel osr_level = MIN2((CompLevel) method->highest_osr_comp_level(), |
3837
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
395 common(&AdvancedThresholdPolicy::loop_predicate, method, cur_level, true)); |
2348 | 396 CompLevel next_level = common(&AdvancedThresholdPolicy::call_predicate, method, cur_level); |
397 | |
398 // If OSR method level is greater than the regular method level, the levels should be | |
399 // equalized by raising the regular method level in order to avoid OSRs during each | |
400 // invocation of the method. | |
401 if (osr_level == CompLevel_full_optimization && cur_level == CompLevel_full_profile) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4825
diff
changeset
|
402 MethodData* mdo = method->method_data(); |
2348 | 403 guarantee(mdo != NULL, "MDO should not be NULL"); |
404 if (mdo->invocation_count() >= 1) { | |
405 next_level = CompLevel_full_optimization; | |
406 } | |
407 } else { | |
408 next_level = MAX2(osr_level, next_level); | |
409 } | |
410 return next_level; | |
411 } | |
412 | |
413 // Determine if we should do an OSR compilation of a given method. | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4825
diff
changeset
|
414 CompLevel AdvancedThresholdPolicy::loop_event(Method* method, CompLevel cur_level) { |
3837
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
415 CompLevel next_level = common(&AdvancedThresholdPolicy::loop_predicate, method, cur_level, true); |
2348 | 416 if (cur_level == CompLevel_none) { |
417 // If there is a live OSR method that means that we deopted to the interpreter | |
418 // for the transition. | |
3790
6f6e91603a45
7058689: Tiered: Reprofiling doesn't happen in presence of level 4 OSR methods
iveresov
parents:
3358
diff
changeset
|
419 CompLevel osr_level = MIN2((CompLevel)method->highest_osr_comp_level(), next_level); |
2348 | 420 if (osr_level > CompLevel_none) { |
421 return osr_level; | |
422 } | |
423 } | |
3790
6f6e91603a45
7058689: Tiered: Reprofiling doesn't happen in presence of level 4 OSR methods
iveresov
parents:
3358
diff
changeset
|
424 return next_level; |
2348 | 425 } |
426 | |
427 // Update the rate and submit compile | |
4825
20334ed5ed3c
7131259: compile_method and CompilationPolicy::event shouldn't be declared TRAPS
iveresov
parents:
4756
diff
changeset
|
428 void AdvancedThresholdPolicy::submit_compile(methodHandle mh, int bci, CompLevel level, JavaThread* thread) { |
2348 | 429 int hot_count = (bci == InvocationEntryBci) ? mh->invocation_count() : mh->backedge_count(); |
430 update_rate(os::javaTimeMillis(), mh()); | |
4825
20334ed5ed3c
7131259: compile_method and CompilationPolicy::event shouldn't be declared TRAPS
iveresov
parents:
4756
diff
changeset
|
431 CompileBroker::compile_method(mh, bci, level, mh, hot_count, "tiered", thread); |
2348 | 432 } |
433 | |
434 // Handle the invocation event. | |
435 void AdvancedThresholdPolicy::method_invocation_event(methodHandle mh, methodHandle imh, | |
4825
20334ed5ed3c
7131259: compile_method and CompilationPolicy::event shouldn't be declared TRAPS
iveresov
parents:
4756
diff
changeset
|
436 CompLevel level, nmethod* nm, JavaThread* thread) { |
2348 | 437 if (should_create_mdo(mh(), level)) { |
4825
20334ed5ed3c
7131259: compile_method and CompilationPolicy::event shouldn't be declared TRAPS
iveresov
parents:
4756
diff
changeset
|
438 create_mdo(mh, thread); |
2348 | 439 } |
440 if (is_compilation_enabled() && !CompileBroker::compilation_is_in_queue(mh, InvocationEntryBci)) { | |
441 CompLevel next_level = call_event(mh(), level); | |
442 if (next_level != level) { | |
4825
20334ed5ed3c
7131259: compile_method and CompilationPolicy::event shouldn't be declared TRAPS
iveresov
parents:
4756
diff
changeset
|
443 compile(mh, InvocationEntryBci, next_level, thread); |
2348 | 444 } |
445 } | |
446 } | |
447 | |
448 // Handle the back branch event. Notice that we can compile the method | |
449 // with a regular entry from here. | |
450 void AdvancedThresholdPolicy::method_back_branch_event(methodHandle mh, methodHandle imh, | |
4825
20334ed5ed3c
7131259: compile_method and CompilationPolicy::event shouldn't be declared TRAPS
iveresov
parents:
4756
diff
changeset
|
451 int bci, CompLevel level, nmethod* nm, JavaThread* thread) { |
2348 | 452 if (should_create_mdo(mh(), level)) { |
4825
20334ed5ed3c
7131259: compile_method and CompilationPolicy::event shouldn't be declared TRAPS
iveresov
parents:
4756
diff
changeset
|
453 create_mdo(mh, thread); |
2348 | 454 } |
3791
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
455 // Check if MDO should be created for the inlined method |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
456 if (should_create_mdo(imh(), level)) { |
4825
20334ed5ed3c
7131259: compile_method and CompilationPolicy::event shouldn't be declared TRAPS
iveresov
parents:
4756
diff
changeset
|
457 create_mdo(imh, thread); |
3791
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
458 } |
2348 | 459 |
3791
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
460 if (is_compilation_enabled()) { |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
461 CompLevel next_osr_level = loop_event(imh(), level); |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
462 CompLevel max_osr_level = (CompLevel)imh->highest_osr_comp_level(); |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
463 // At the very least compile the OSR version |
3837
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
3791
diff
changeset
|
464 if (!CompileBroker::compilation_is_in_queue(imh, bci) && next_osr_level != level) { |
4825
20334ed5ed3c
7131259: compile_method and CompilationPolicy::event shouldn't be declared TRAPS
iveresov
parents:
4756
diff
changeset
|
465 compile(imh, bci, next_osr_level, thread); |
2348 | 466 } |
467 | |
3791
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
468 // Use loop event as an opportunity to also check if there's been |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
469 // enough calls. |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
470 CompLevel cur_level, next_level; |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
471 if (mh() != imh()) { // If there is an enclosing method |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
472 guarantee(nm != NULL, "Should have nmethod here"); |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
473 cur_level = comp_level(mh()); |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
474 next_level = call_event(mh(), cur_level); |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
475 |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
476 if (max_osr_level == CompLevel_full_optimization) { |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
477 // The inlinee OSRed to full opt, we need to modify the enclosing method to avoid deopts |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
478 bool make_not_entrant = false; |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
479 if (nm->is_osr_method()) { |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
480 // This is an osr method, just make it not entrant and recompile later if needed |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
481 make_not_entrant = true; |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
482 } else { |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
483 if (next_level != CompLevel_full_optimization) { |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
484 // next_level is not full opt, so we need to recompile the |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
485 // enclosing method without the inlinee |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
486 cur_level = CompLevel_none; |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
487 make_not_entrant = true; |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
488 } |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
489 } |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
490 if (make_not_entrant) { |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
491 if (PrintTieredEvents) { |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
492 int osr_bci = nm->is_osr_method() ? nm->osr_entry_bci() : InvocationEntryBci; |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
493 print_event(MAKE_NOT_ENTRANT, mh(), mh(), osr_bci, level); |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
494 } |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
495 nm->make_not_entrant(); |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
496 } |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
497 } |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
498 if (!CompileBroker::compilation_is_in_queue(mh, InvocationEntryBci)) { |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
499 // Fix up next_level if necessary to avoid deopts |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
500 if (next_level == CompLevel_limited_profile && max_osr_level == CompLevel_full_profile) { |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
501 next_level = CompLevel_full_profile; |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
502 } |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
503 if (cur_level != next_level) { |
4825
20334ed5ed3c
7131259: compile_method and CompilationPolicy::event shouldn't be declared TRAPS
iveresov
parents:
4756
diff
changeset
|
504 compile(mh, InvocationEntryBci, next_level, thread); |
3791
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
505 } |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
506 } |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
507 } else { |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
508 cur_level = comp_level(imh()); |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
509 next_level = call_event(imh(), cur_level); |
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
510 if (!CompileBroker::compilation_is_in_queue(imh, bci) && next_level != cur_level) { |
4825
20334ed5ed3c
7131259: compile_method and CompilationPolicy::event shouldn't be declared TRAPS
iveresov
parents:
4756
diff
changeset
|
511 compile(imh, InvocationEntryBci, next_level, thread); |
3791
2c359f27615c
7057120: Tiered: Allow C1 to inline methods with loops
iveresov
parents:
3790
diff
changeset
|
512 } |
2348 | 513 } |
514 } | |
515 } | |
516 | |
517 #endif // TIERED |