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annotate src/share/vm/runtime/advancedThresholdPolicy.cpp @ 21195:a4b60873851b
LIRKind: add #merge().
author | Josef Eisl <josef.eisl@jku.at> |
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date | Thu, 23 Apr 2015 11:30:06 +0200 |
parents | 7848fc12602b |
children | be896a1983c0 |
rev | line source |
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2348 | 1 /* |
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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) { | |
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33 tty->print(" rate="); |
2348 | 34 if (mh->prev_time() == 0) tty->print("n/a"); |
35 else tty->print("%f", mh->rate()); | |
36 | |
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37 tty->print(" k=%.2lf,%.2lf", threshold_scale(CompLevel_full_profile, Tier3LoadFeedback), |
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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)); | |
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56 set_c2_count(MAX2(count - c1_count(), 1)); |
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57 FLAG_SET_ERGO(intx, CICompilerCount, c1_count() + c2_count()); |
2348 | 58 |
59 // Some inlining tuning | |
60 #ifdef X86 | |
61 if (FLAG_IS_DEFAULT(InlineSmallCode)) { | |
62 FLAG_SET_DEFAULT(InlineSmallCode, 2000); | |
63 } | |
64 #endif | |
65 | |
66 #ifdef SPARC | |
67 if (FLAG_IS_DEFAULT(InlineSmallCode)) { | |
68 FLAG_SET_DEFAULT(InlineSmallCode, 2500); | |
69 } | |
70 #endif | |
71 | |
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72 set_increase_threshold_at_ratio(); |
2348 | 73 set_start_time(os::javaTimeMillis()); |
74 } | |
75 | |
76 // update_rate() is called from select_task() while holding a compile queue lock. | |
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77 void AdvancedThresholdPolicy::update_rate(jlong t, Method* m) { |
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78 // Skip update if counters are absent. |
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79 // Can't allocate them since we are holding compile queue lock. |
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80 if (m->method_counters() == NULL) return; |
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81 |
2348 | 82 if (is_old(m)) { |
83 // We don't remove old methods from the queue, | |
84 // so we can just zero the rate. | |
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85 m->set_rate(0); |
2348 | 86 return; |
87 } | |
88 | |
89 // We don't update the rate if we've just came out of a safepoint. | |
90 // delta_s is the time since last safepoint in milliseconds. | |
91 jlong delta_s = t - SafepointSynchronize::end_of_last_safepoint(); | |
92 jlong delta_t = t - (m->prev_time() != 0 ? m->prev_time() : start_time()); // milliseconds since the last measurement | |
93 // How many events were there since the last time? | |
94 int event_count = m->invocation_count() + m->backedge_count(); | |
95 int delta_e = event_count - m->prev_event_count(); | |
96 | |
97 // We should be running for at least 1ms. | |
98 if (delta_s >= TieredRateUpdateMinTime) { | |
99 // And we must've taken the previous point at least 1ms before. | |
100 if (delta_t >= TieredRateUpdateMinTime && delta_e > 0) { | |
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101 m->set_prev_time(t); |
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102 m->set_prev_event_count(event_count); |
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103 m->set_rate((float)delta_e / (float)delta_t); // Rate is events per millisecond |
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104 } else { |
2348 | 105 if (delta_t > TieredRateUpdateMaxTime && delta_e == 0) { |
106 // If nothing happened for 25ms, zero the rate. Don't modify prev values. | |
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107 m->set_rate(0); |
2348 | 108 } |
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109 } |
2348 | 110 } |
111 } | |
112 | |
113 // Check if this method has been stale from a given number of milliseconds. | |
114 // See select_task(). | |
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115 bool AdvancedThresholdPolicy::is_stale(jlong t, jlong timeout, Method* m) { |
2348 | 116 jlong delta_s = t - SafepointSynchronize::end_of_last_safepoint(); |
117 jlong delta_t = t - m->prev_time(); | |
118 if (delta_t > timeout && delta_s > timeout) { | |
119 int event_count = m->invocation_count() + m->backedge_count(); | |
120 int delta_e = event_count - m->prev_event_count(); | |
121 // Return true if there were no events. | |
122 return delta_e == 0; | |
123 } | |
124 return false; | |
125 } | |
126 | |
127 // We don't remove old methods from the compile queue even if they have | |
128 // very low activity. See select_task(). | |
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129 bool AdvancedThresholdPolicy::is_old(Method* method) { |
2348 | 130 return method->invocation_count() > 50000 || method->backedge_count() > 500000; |
131 } | |
132 | |
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133 double AdvancedThresholdPolicy::weight(Method* method) { |
2348 | 134 return (method->rate() + 1) * ((method->invocation_count() + 1) * (method->backedge_count() + 1)); |
135 } | |
136 | |
137 // Apply heuristics and return true if x should be compiled before y | |
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138 bool AdvancedThresholdPolicy::compare_methods(Method* x, Method* y) { |
2348 | 139 if (x->highest_comp_level() > y->highest_comp_level()) { |
140 // recompilation after deopt | |
141 return true; | |
142 } else | |
143 if (x->highest_comp_level() == y->highest_comp_level()) { | |
144 if (weight(x) > weight(y)) { | |
145 return true; | |
146 } | |
147 } | |
148 return false; | |
149 } | |
150 | |
151 // Is method profiled enough? | |
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152 bool AdvancedThresholdPolicy::is_method_profiled(Method* method) { |
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153 MethodData* mdo = method->method_data(); |
2348 | 154 if (mdo != NULL) { |
155 int i = mdo->invocation_count_delta(); | |
156 int b = mdo->backedge_count_delta(); | |
157 return call_predicate_helper<CompLevel_full_profile>(i, b, 1); | |
158 } | |
159 return false; | |
160 } | |
161 | |
162 // Called with the queue locked and with at least one element | |
163 CompileTask* AdvancedThresholdPolicy::select_task(CompileQueue* compile_queue) { | |
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164 #ifdef COMPILERGRAAL |
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165 CompileTask *max_non_graal_task = NULL; |
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166 #endif |
2348 | 167 CompileTask *max_task = NULL; |
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168 Method* max_method = NULL; |
2348 | 169 jlong t = os::javaTimeMillis(); |
170 // Iterate through the queue and find a method with a maximum rate. | |
171 for (CompileTask* task = compile_queue->first(); task != NULL;) { | |
172 CompileTask* next_task = task->next(); | |
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173 Method* method = task->method(); |
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174 update_rate(t, method); |
2348 | 175 if (max_task == NULL) { |
176 max_task = task; | |
177 max_method = method; | |
178 } else { | |
179 // If a method has been stale for some time, remove it from the queue. | |
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180 if (is_stale(t, TieredCompileTaskTimeout, method) && !is_old(method)) { |
2348 | 181 if (PrintTieredEvents) { |
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182 print_event(REMOVE_FROM_QUEUE, method, method, task->osr_bci(), (CompLevel)task->comp_level()); |
2348 | 183 } |
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184 task->log_task_dequeued("stale"); |
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185 compile_queue->remove_and_mark_stale(task); |
2348 | 186 method->clear_queued_for_compilation(); |
187 task = next_task; | |
188 continue; | |
189 } | |
190 | |
191 // Select a method with a higher rate | |
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192 if (compare_methods(method, max_method)) { |
2348 | 193 max_task = task; |
194 max_method = method; | |
195 } | |
196 } | |
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197 #ifdef COMPILERGRAAL |
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198 if (GraalCompileAppFirst && (task->comp_level() == CompLevel_full_optimization || !method->has_compiled_code()) && |
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199 SystemDictionary::graal_loader() != NULL && |
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200 method->method_holder()->class_loader() != SystemDictionary::graal_loader()) { |
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201 if (max_non_graal_task == NULL) { |
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202 max_non_graal_task = task; |
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203 } else { |
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204 // Select a method with a higher rate |
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205 if (compare_methods(method, max_non_graal_task->method())) { |
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206 max_non_graal_task = task; |
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207 } |
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208 } |
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209 } |
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210 #endif |
2348 | 211 task = next_task; |
212 } | |
213 | |
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214 #ifdef COMPILERGRAAL |
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215 if (max_non_graal_task != NULL) { |
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216 max_task = max_non_graal_task; |
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217 max_method = max_task->method(); |
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218 } |
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219 #endif |
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220 |
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221 if (max_task->comp_level() == CompLevel_full_profile && TieredStopAtLevel > CompLevel_full_profile |
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222 && is_method_profiled(max_method)) { |
2348 | 223 max_task->set_comp_level(CompLevel_limited_profile); |
224 if (PrintTieredEvents) { | |
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225 print_event(UPDATE_IN_QUEUE, max_method, max_method, max_task->osr_bci(), (CompLevel)max_task->comp_level()); |
2348 | 226 } |
227 } | |
228 | |
229 return max_task; | |
230 } | |
231 | |
232 double AdvancedThresholdPolicy::threshold_scale(CompLevel level, int feedback_k) { | |
233 double queue_size = CompileBroker::queue_size(level); | |
234 int comp_count = compiler_count(level); | |
235 double k = queue_size / (feedback_k * comp_count) + 1; | |
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236 |
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237 // Increase C1 compile threshold when the code cache is filled more |
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238 // than specified by IncreaseFirstTierCompileThresholdAt percentage. |
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239 // The main intention is to keep enough free space for C2 compiled code |
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240 // to achieve peak performance if the code cache is under stress. |
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241 if ((TieredStopAtLevel == CompLevel_full_optimization) && (level != CompLevel_full_optimization)) { |
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242 double current_reverse_free_ratio = CodeCache::reverse_free_ratio(); |
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243 if (current_reverse_free_ratio > _increase_threshold_at_ratio) { |
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244 k *= exp(current_reverse_free_ratio - _increase_threshold_at_ratio); |
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245 } |
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246 } |
2348 | 247 return k; |
248 } | |
249 | |
250 // Call and loop predicates determine whether a transition to a higher | |
251 // compilation level should be performed (pointers to predicate functions | |
252 // are passed to common()). | |
253 // Tier?LoadFeedback is basically a coefficient that determines of | |
254 // how many methods per compiler thread can be in the queue before | |
255 // the threshold values double. | |
256 bool AdvancedThresholdPolicy::loop_predicate(int i, int b, CompLevel cur_level) { | |
257 switch(cur_level) { | |
258 case CompLevel_none: | |
259 case CompLevel_limited_profile: { | |
260 double k = threshold_scale(CompLevel_full_profile, Tier3LoadFeedback); | |
261 return loop_predicate_helper<CompLevel_none>(i, b, k); | |
262 } | |
263 case CompLevel_full_profile: { | |
264 double k = threshold_scale(CompLevel_full_optimization, Tier4LoadFeedback); | |
265 return loop_predicate_helper<CompLevel_full_profile>(i, b, k); | |
266 } | |
267 default: | |
268 return true; | |
269 } | |
270 } | |
271 | |
272 bool AdvancedThresholdPolicy::call_predicate(int i, int b, CompLevel cur_level) { | |
273 switch(cur_level) { | |
274 case CompLevel_none: | |
275 case CompLevel_limited_profile: { | |
276 double k = threshold_scale(CompLevel_full_profile, Tier3LoadFeedback); | |
277 return call_predicate_helper<CompLevel_none>(i, b, k); | |
278 } | |
279 case CompLevel_full_profile: { | |
280 double k = threshold_scale(CompLevel_full_optimization, Tier4LoadFeedback); | |
281 return call_predicate_helper<CompLevel_full_profile>(i, b, k); | |
282 } | |
283 default: | |
284 return true; | |
285 } | |
286 } | |
287 | |
288 // If a method is old enough and is still in the interpreter we would want to | |
289 // start profiling without waiting for the compiled method to arrive. | |
290 // We also take the load on compilers into the account. | |
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291 bool AdvancedThresholdPolicy::should_create_mdo(Method* method, CompLevel cur_level) { |
2348 | 292 if (cur_level == CompLevel_none && |
293 CompileBroker::queue_size(CompLevel_full_optimization) <= | |
294 Tier3DelayOn * compiler_count(CompLevel_full_optimization)) { | |
295 int i = method->invocation_count(); | |
296 int b = method->backedge_count(); | |
297 double k = Tier0ProfilingStartPercentage / 100.0; | |
298 return call_predicate_helper<CompLevel_none>(i, b, k) || loop_predicate_helper<CompLevel_none>(i, b, k); | |
299 } | |
300 return false; | |
301 } | |
302 | |
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303 // Inlining control: if we're compiling a profiled method with C1 and the callee |
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304 // is known to have OSRed in a C2 version, don't inline it. |
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305 bool AdvancedThresholdPolicy::should_not_inline(ciEnv* env, ciMethod* callee) { |
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306 CompLevel comp_level = (CompLevel)env->comp_level(); |
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307 if (comp_level == CompLevel_full_profile || |
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308 comp_level == CompLevel_limited_profile) { |
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309 return callee->highest_osr_comp_level() == CompLevel_full_optimization; |
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310 } |
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311 return false; |
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312 } |
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313 |
2348 | 314 // Create MDO if necessary. |
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315 void AdvancedThresholdPolicy::create_mdo(methodHandle mh, JavaThread* THREAD) { |
2348 | 316 if (mh->is_native() || mh->is_abstract() || mh->is_accessor()) return; |
317 if (mh->method_data() == NULL) { | |
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318 Method::build_interpreter_method_data(mh, CHECK_AND_CLEAR); |
2348 | 319 } |
320 } | |
321 | |
322 | |
323 /* | |
324 * Method states: | |
325 * 0 - interpreter (CompLevel_none) | |
326 * 1 - pure C1 (CompLevel_simple) | |
327 * 2 - C1 with invocation and backedge counting (CompLevel_limited_profile) | |
328 * 3 - C1 with full profiling (CompLevel_full_profile) | |
329 * 4 - C2 (CompLevel_full_optimization) | |
330 * | |
331 * Common state transition patterns: | |
332 * a. 0 -> 3 -> 4. | |
333 * The most common path. But note that even in this straightforward case | |
334 * profiling can start at level 0 and finish at level 3. | |
335 * | |
336 * b. 0 -> 2 -> 3 -> 4. | |
337 * This case occures when the load on C2 is deemed too high. So, instead of transitioning | |
338 * into state 3 directly and over-profiling while a method is in the C2 queue we transition to | |
339 * level 2 and wait until the load on C2 decreases. This path is disabled for OSRs. | |
340 * | |
341 * c. 0 -> (3->2) -> 4. | |
342 * In this case we enqueue a method for compilation at level 3, but the C1 queue is long enough | |
343 * to enable the profiling to fully occur at level 0. In this case we change the compilation level | |
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344 * of the method to 2 while the request is still in-queue, because it'll allow it to run much faster |
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345 * without full profiling while c2 is compiling. |
2348 | 346 * |
347 * d. 0 -> 3 -> 1 or 0 -> 2 -> 1. | |
348 * After a method was once compiled with C1 it can be identified as trivial and be compiled to | |
349 * level 1. These transition can also occur if a method can't be compiled with C2 but can with C1. | |
350 * | |
351 * e. 0 -> 4. | |
352 * This can happen if a method fails C1 compilation (it will still be profiled in the interpreter) | |
353 * or because of a deopt that didn't require reprofiling (compilation won't happen in this case because | |
354 * the compiled version already exists). | |
355 * | |
356 * Note that since state 0 can be reached from any other state via deoptimization different loops | |
357 * are possible. | |
358 * | |
359 */ | |
360 | |
361 // Common transition function. Given a predicate determines if a method should transition to another level. | |
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362 CompLevel AdvancedThresholdPolicy::common(Predicate p, Method* method, CompLevel cur_level, bool disable_feedback) { |
2348 | 363 CompLevel next_level = cur_level; |
364 int i = method->invocation_count(); | |
365 int b = method->backedge_count(); | |
366 | |
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367 if (is_trivial(method)) { |
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368 next_level = CompLevel_simple; |
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369 } else { |
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370 switch(cur_level) { |
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371 case CompLevel_none: |
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372 // If we were at full profile level, would we switch to full opt? |
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373 if (common(p, method, CompLevel_full_profile, disable_feedback) == CompLevel_full_optimization) { |
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374 next_level = CompLevel_full_optimization; |
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375 } else if ((this->*p)(i, b, cur_level)) { |
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376 #ifdef COMPILERGRAAL |
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377 // Since Graal takes a while to warm up, its queue inevitably backs up during |
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378 // early VM execution. As of 2014-06-13, Graal's inliner assumes that the root |
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379 // compilation method and all potential inlinees have mature profiles (which |
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380 // includes type profiling). If it sees immature profiles, Graal's inliner |
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381 // can perform pathologically bad (e.g., causing OutOfMemoryErrors due to |
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382 // exploring/inlining too many graphs). Since a rewrite of the inliner is |
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383 // in progress, we simply disable the dialing back heuristic for now and will |
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384 // revisit this decision once the new inliner is completed. |
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385 next_level = CompLevel_full_profile; |
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386 #else |
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387 // C1-generated fully profiled code is about 30% slower than the limited profile |
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388 // code that has only invocation and backedge counters. The observation is that |
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389 // if C2 queue is large enough we can spend too much time in the fully profiled code |
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390 // while waiting for C2 to pick the method from the queue. To alleviate this problem |
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391 // we introduce a feedback on the C2 queue size. If the C2 queue is sufficiently long |
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392 // we choose to compile a limited profiled version and then recompile with full profiling |
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393 // when the load on C2 goes down. |
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394 if (!disable_feedback && CompileBroker::queue_size(CompLevel_full_optimization) > |
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395 Tier3DelayOn * compiler_count(CompLevel_full_optimization)) { |
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396 next_level = CompLevel_limited_profile; |
2348 | 397 } else { |
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398 next_level = CompLevel_full_profile; |
2348 | 399 } |
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400 #endif |
2348 | 401 } |
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402 break; |
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403 case CompLevel_limited_profile: |
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404 if (is_method_profiled(method)) { |
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405 // Special case: we got here because this method was fully profiled in the interpreter. |
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406 next_level = CompLevel_full_optimization; |
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407 } else { |
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408 MethodData* mdo = method->method_data(); |
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409 if (mdo != NULL) { |
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410 if (mdo->would_profile()) { |
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411 if (disable_feedback || (CompileBroker::queue_size(CompLevel_full_optimization) <= |
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412 Tier3DelayOff * compiler_count(CompLevel_full_optimization) && |
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413 (this->*p)(i, b, cur_level))) { |
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414 next_level = CompLevel_full_profile; |
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415 } |
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416 } else { |
2348 | 417 next_level = CompLevel_full_optimization; |
418 } | |
419 } | |
420 } | |
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421 break; |
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422 case CompLevel_full_profile: |
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423 { |
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424 MethodData* mdo = method->method_data(); |
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425 if (mdo != NULL) { |
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426 if (mdo->would_profile()) { |
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427 int mdo_i = mdo->invocation_count_delta(); |
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428 int mdo_b = mdo->backedge_count_delta(); |
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429 if ((this->*p)(mdo_i, mdo_b, cur_level)) { |
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430 next_level = CompLevel_full_optimization; |
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431 } |
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432 } else { |
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433 next_level = CompLevel_full_optimization; |
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434 } |
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435 } |
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436 } |
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437 break; |
2348 | 438 } |
439 } | |
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440 return MIN2(next_level, (CompLevel)TieredStopAtLevel); |
2348 | 441 } |
442 | |
443 // Determine if a method should be compiled with a normal entry point at a different level. | |
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444 CompLevel AdvancedThresholdPolicy::call_event(Method* method, CompLevel cur_level) { |
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445 CompLevel osr_level = MIN2((CompLevel) method->highest_osr_comp_level(), |
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446 common(&AdvancedThresholdPolicy::loop_predicate, method, cur_level, true)); |
2348 | 447 CompLevel next_level = common(&AdvancedThresholdPolicy::call_predicate, method, cur_level); |
448 | |
449 // If OSR method level is greater than the regular method level, the levels should be | |
450 // equalized by raising the regular method level in order to avoid OSRs during each | |
451 // invocation of the method. | |
452 if (osr_level == CompLevel_full_optimization && cur_level == CompLevel_full_profile) { | |
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453 MethodData* mdo = method->method_data(); |
2348 | 454 guarantee(mdo != NULL, "MDO should not be NULL"); |
455 if (mdo->invocation_count() >= 1) { | |
456 next_level = CompLevel_full_optimization; | |
457 } | |
458 } else { | |
459 next_level = MAX2(osr_level, next_level); | |
460 } | |
461 return next_level; | |
462 } | |
463 | |
464 // Determine if we should do an OSR compilation of a given method. | |
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465 CompLevel AdvancedThresholdPolicy::loop_event(Method* method, CompLevel cur_level) { |
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466 CompLevel next_level = common(&AdvancedThresholdPolicy::loop_predicate, method, cur_level, true); |
2348 | 467 if (cur_level == CompLevel_none) { |
468 // If there is a live OSR method that means that we deopted to the interpreter | |
469 // for the transition. | |
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470 CompLevel osr_level = MIN2((CompLevel)method->highest_osr_comp_level(), next_level); |
2348 | 471 if (osr_level > CompLevel_none) { |
472 return osr_level; | |
473 } | |
474 } | |
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475 return next_level; |
2348 | 476 } |
477 | |
478 // Update the rate and submit compile | |
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479 void AdvancedThresholdPolicy::submit_compile(methodHandle mh, int bci, CompLevel level, JavaThread* thread) { |
2348 | 480 int hot_count = (bci == InvocationEntryBci) ? mh->invocation_count() : mh->backedge_count(); |
481 update_rate(os::javaTimeMillis(), mh()); | |
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482 CompileBroker::compile_method(mh, bci, level, mh, hot_count, "tiered", thread); |
2348 | 483 } |
484 | |
485 // Handle the invocation event. | |
486 void AdvancedThresholdPolicy::method_invocation_event(methodHandle mh, methodHandle imh, | |
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487 CompLevel level, nmethod* nm, JavaThread* thread) { |
2348 | 488 if (should_create_mdo(mh(), level)) { |
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489 create_mdo(mh, thread); |
2348 | 490 } |
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491 if (is_compilation_enabled() && !CompileBroker::compilation_is_in_queue(mh)) { |
2348 | 492 CompLevel next_level = call_event(mh(), level); |
493 if (next_level != level) { | |
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494 compile(mh, InvocationEntryBci, next_level, thread); |
2348 | 495 } |
496 } | |
497 } | |
498 | |
499 // Handle the back branch event. Notice that we can compile the method | |
500 // with a regular entry from here. | |
501 void AdvancedThresholdPolicy::method_back_branch_event(methodHandle mh, methodHandle imh, | |
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502 int bci, CompLevel level, nmethod* nm, JavaThread* thread) { |
2348 | 503 if (should_create_mdo(mh(), level)) { |
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504 create_mdo(mh, thread); |
2348 | 505 } |
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506 // Check if MDO should be created for the inlined method |
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507 if (should_create_mdo(imh(), level)) { |
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508 create_mdo(imh, thread); |
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509 } |
2348 | 510 |
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511 if (is_compilation_enabled()) { |
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512 CompLevel next_osr_level = loop_event(imh(), level); |
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513 CompLevel max_osr_level = (CompLevel)imh->highest_osr_comp_level(); |
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514 // At the very least compile the OSR version |
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515 if (!CompileBroker::compilation_is_in_queue(imh) && (next_osr_level != level)) { |
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516 compile(imh, bci, next_osr_level, thread); |
2348 | 517 } |
518 | |
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519 // Use loop event as an opportunity to also check if there's been |
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520 // enough calls. |
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521 CompLevel cur_level, next_level; |
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522 if (mh() != imh()) { // If there is an enclosing method |
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523 guarantee(nm != NULL, "Should have nmethod here"); |
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524 cur_level = comp_level(mh()); |
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525 next_level = call_event(mh(), cur_level); |
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526 |
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527 if (max_osr_level == CompLevel_full_optimization) { |
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528 // The inlinee OSRed to full opt, we need to modify the enclosing method to avoid deopts |
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529 bool make_not_entrant = false; |
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530 if (nm->is_osr_method()) { |
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531 // This is an osr method, just make it not entrant and recompile later if needed |
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532 make_not_entrant = true; |
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533 } else { |
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534 if (next_level != CompLevel_full_optimization) { |
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535 // next_level is not full opt, so we need to recompile the |
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536 // enclosing method without the inlinee |
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537 cur_level = CompLevel_none; |
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538 make_not_entrant = true; |
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539 } |
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540 } |
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541 if (make_not_entrant) { |
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542 if (PrintTieredEvents) { |
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543 int osr_bci = nm->is_osr_method() ? nm->osr_entry_bci() : InvocationEntryBci; |
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544 print_event(MAKE_NOT_ENTRANT, mh(), mh(), osr_bci, level); |
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545 } |
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546 nm->make_not_entrant(); |
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547 } |
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548 } |
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549 if (!CompileBroker::compilation_is_in_queue(mh)) { |
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550 // Fix up next_level if necessary to avoid deopts |
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551 if (next_level == CompLevel_limited_profile && max_osr_level == CompLevel_full_profile) { |
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552 next_level = CompLevel_full_profile; |
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553 } |
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554 if (cur_level != next_level) { |
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555 compile(mh, InvocationEntryBci, next_level, thread); |
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556 } |
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557 } |
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558 } else { |
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559 cur_level = comp_level(imh()); |
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560 next_level = call_event(imh(), cur_level); |
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561 if (!CompileBroker::compilation_is_in_queue(imh) && (next_level != cur_level)) { |
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562 compile(imh, InvocationEntryBci, next_level, thread); |
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563 } |
2348 | 564 } |
565 } | |
566 } | |
567 | |
568 #endif // TIERED |