Mercurial > hg > truffle
annotate src/share/vm/runtime/advancedThresholdPolicy.cpp @ 7212:291ffc492eb6
Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/
| author | Doug Simon <doug.simon@oracle.com> |
|---|---|
| date | Fri, 14 Dec 2012 14:35:13 +0100 |
| parents | d8ce2825b193 |
| children | aeaca88565e6 |
| rev | line source |
|---|---|
| 2348 | 1 /* |
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2 * Copyright (c) 2010, 2012, 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)); | |
| 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. | |
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76 void AdvancedThresholdPolicy::update_rate(jlong t, Method* m) { |
| 2348 | 77 if (is_old(m)) { |
| 78 // We don't remove old methods from the queue, | |
| 79 // so we can just zero the rate. | |
| 80 m->set_rate(0); | |
| 81 return; | |
| 82 } | |
| 83 | |
| 84 // We don't update the rate if we've just came out of a safepoint. | |
| 85 // delta_s is the time since last safepoint in milliseconds. | |
| 86 jlong delta_s = t - SafepointSynchronize::end_of_last_safepoint(); | |
| 87 jlong delta_t = t - (m->prev_time() != 0 ? m->prev_time() : start_time()); // milliseconds since the last measurement | |
| 88 // How many events were there since the last time? | |
| 89 int event_count = m->invocation_count() + m->backedge_count(); | |
| 90 int delta_e = event_count - m->prev_event_count(); | |
| 91 | |
| 92 // We should be running for at least 1ms. | |
| 93 if (delta_s >= TieredRateUpdateMinTime) { | |
| 94 // And we must've taken the previous point at least 1ms before. | |
| 95 if (delta_t >= TieredRateUpdateMinTime && delta_e > 0) { | |
| 96 m->set_prev_time(t); | |
| 97 m->set_prev_event_count(event_count); | |
| 98 m->set_rate((float)delta_e / (float)delta_t); // Rate is events per millisecond | |
| 99 } else | |
| 100 if (delta_t > TieredRateUpdateMaxTime && delta_e == 0) { | |
| 101 // If nothing happened for 25ms, zero the rate. Don't modify prev values. | |
| 102 m->set_rate(0); | |
| 103 } | |
| 104 } | |
| 105 } | |
| 106 | |
| 107 // Check if this method has been stale from a given number of milliseconds. | |
| 108 // See select_task(). | |
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109 bool AdvancedThresholdPolicy::is_stale(jlong t, jlong timeout, Method* m) { |
| 2348 | 110 jlong delta_s = t - SafepointSynchronize::end_of_last_safepoint(); |
| 111 jlong delta_t = t - m->prev_time(); | |
| 112 if (delta_t > timeout && delta_s > timeout) { | |
| 113 int event_count = m->invocation_count() + m->backedge_count(); | |
| 114 int delta_e = event_count - m->prev_event_count(); | |
| 115 // Return true if there were no events. | |
| 116 return delta_e == 0; | |
| 117 } | |
| 118 return false; | |
| 119 } | |
| 120 | |
| 121 // We don't remove old methods from the compile queue even if they have | |
| 122 // very low activity. See select_task(). | |
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123 bool AdvancedThresholdPolicy::is_old(Method* method) { |
| 2348 | 124 return method->invocation_count() > 50000 || method->backedge_count() > 500000; |
| 125 } | |
| 126 | |
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127 double AdvancedThresholdPolicy::weight(Method* method) { |
| 2348 | 128 return (method->rate() + 1) * ((method->invocation_count() + 1) * (method->backedge_count() + 1)); |
| 129 } | |
| 130 | |
| 131 // Apply heuristics and return true if x should be compiled before y | |
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132 bool AdvancedThresholdPolicy::compare_methods(Method* x, Method* y) { |
| 2348 | 133 if (x->highest_comp_level() > y->highest_comp_level()) { |
| 134 // recompilation after deopt | |
| 135 return true; | |
| 136 } else | |
| 137 if (x->highest_comp_level() == y->highest_comp_level()) { | |
| 138 if (weight(x) > weight(y)) { | |
| 139 return true; | |
| 140 } | |
| 141 } | |
| 142 return false; | |
| 143 } | |
| 144 | |
| 145 // Is method profiled enough? | |
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146 bool AdvancedThresholdPolicy::is_method_profiled(Method* method) { |
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147 MethodData* mdo = method->method_data(); |
| 2348 | 148 if (mdo != NULL) { |
| 149 int i = mdo->invocation_count_delta(); | |
| 150 int b = mdo->backedge_count_delta(); | |
| 151 return call_predicate_helper<CompLevel_full_profile>(i, b, 1); | |
| 152 } | |
| 153 return false; | |
| 154 } | |
| 155 | |
| 156 // Called with the queue locked and with at least one element | |
| 157 CompileTask* AdvancedThresholdPolicy::select_task(CompileQueue* compile_queue) { | |
| 158 CompileTask *max_task = NULL; | |
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159 Method* max_method = NULL; |
| 2348 | 160 jlong t = os::javaTimeMillis(); |
| 161 // Iterate through the queue and find a method with a maximum rate. | |
| 162 for (CompileTask* task = compile_queue->first(); task != NULL;) { | |
| 163 CompileTask* next_task = task->next(); | |
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164 Method* method = task->method(); |
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165 MethodData* mdo = method->method_data(); |
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166 update_rate(t, method); |
| 2348 | 167 if (max_task == NULL) { |
| 168 max_task = task; | |
| 169 max_method = method; | |
| 170 } else { | |
| 171 // If a method has been stale for some time, remove it from the queue. | |
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172 if (is_stale(t, TieredCompileTaskTimeout, method) && !is_old(method)) { |
| 2348 | 173 if (PrintTieredEvents) { |
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174 print_event(REMOVE_FROM_QUEUE, method, method, task->osr_bci(), (CompLevel)task->comp_level()); |
| 2348 | 175 } |
| 176 CompileTaskWrapper ctw(task); // Frees the task | |
| 177 compile_queue->remove(task); | |
| 178 method->clear_queued_for_compilation(); | |
| 179 task = next_task; | |
| 180 continue; | |
| 181 } | |
| 182 | |
| 183 // Select a method with a higher rate | |
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184 if (compare_methods(method, max_method)) { |
| 2348 | 185 max_task = task; |
| 186 max_method = method; | |
| 187 } | |
| 188 } | |
| 189 task = next_task; | |
| 190 } | |
| 191 | |
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192 if (max_task->comp_level() == CompLevel_full_profile && TieredStopAtLevel > CompLevel_full_profile |
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193 && is_method_profiled(max_method)) { |
| 2348 | 194 max_task->set_comp_level(CompLevel_limited_profile); |
| 195 if (PrintTieredEvents) { | |
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196 print_event(UPDATE_IN_QUEUE, max_method, max_method, max_task->osr_bci(), (CompLevel)max_task->comp_level()); |
| 2348 | 197 } |
| 198 } | |
| 199 | |
| 200 return max_task; | |
| 201 } | |
| 202 | |
| 203 double AdvancedThresholdPolicy::threshold_scale(CompLevel level, int feedback_k) { | |
| 204 double queue_size = CompileBroker::queue_size(level); | |
| 205 int comp_count = compiler_count(level); | |
| 206 double k = queue_size / (feedback_k * comp_count) + 1; | |
| 207 return k; | |
| 208 } | |
| 209 | |
| 210 // Call and loop predicates determine whether a transition to a higher | |
| 211 // compilation level should be performed (pointers to predicate functions | |
| 212 // are passed to common()). | |
| 213 // Tier?LoadFeedback is basically a coefficient that determines of | |
| 214 // how many methods per compiler thread can be in the queue before | |
| 215 // the threshold values double. | |
| 216 bool AdvancedThresholdPolicy::loop_predicate(int i, int b, CompLevel cur_level) { | |
| 217 switch(cur_level) { | |
| 218 case CompLevel_none: | |
| 219 case CompLevel_limited_profile: { | |
| 220 double k = threshold_scale(CompLevel_full_profile, Tier3LoadFeedback); | |
| 221 return loop_predicate_helper<CompLevel_none>(i, b, k); | |
| 222 } | |
| 223 case CompLevel_full_profile: { | |
| 224 double k = threshold_scale(CompLevel_full_optimization, Tier4LoadFeedback); | |
| 225 return loop_predicate_helper<CompLevel_full_profile>(i, b, k); | |
| 226 } | |
| 227 default: | |
| 228 return true; | |
| 229 } | |
| 230 } | |
| 231 | |
| 232 bool AdvancedThresholdPolicy::call_predicate(int i, int b, CompLevel cur_level) { | |
| 233 switch(cur_level) { | |
| 234 case CompLevel_none: | |
| 235 case CompLevel_limited_profile: { | |
| 236 double k = threshold_scale(CompLevel_full_profile, Tier3LoadFeedback); | |
| 237 return call_predicate_helper<CompLevel_none>(i, b, k); | |
| 238 } | |
| 239 case CompLevel_full_profile: { | |
| 240 double k = threshold_scale(CompLevel_full_optimization, Tier4LoadFeedback); | |
| 241 return call_predicate_helper<CompLevel_full_profile>(i, b, k); | |
| 242 } | |
| 243 default: | |
| 244 return true; | |
| 245 } | |
| 246 } | |
| 247 | |
| 248 // If a method is old enough and is still in the interpreter we would want to | |
| 249 // start profiling without waiting for the compiled method to arrive. | |
| 250 // We also take the load on compilers into the account. | |
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251 bool AdvancedThresholdPolicy::should_create_mdo(Method* method, CompLevel cur_level) { |
| 2348 | 252 if (cur_level == CompLevel_none && |
| 253 CompileBroker::queue_size(CompLevel_full_optimization) <= | |
| 254 Tier3DelayOn * compiler_count(CompLevel_full_optimization)) { | |
| 255 int i = method->invocation_count(); | |
| 256 int b = method->backedge_count(); | |
| 257 double k = Tier0ProfilingStartPercentage / 100.0; | |
| 258 return call_predicate_helper<CompLevel_none>(i, b, k) || loop_predicate_helper<CompLevel_none>(i, b, k); | |
| 259 } | |
| 260 return false; | |
| 261 } | |
| 262 | |
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263 // Inlining control: if we're compiling a profiled method with C1 and the callee |
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264 // is known to have OSRed in a C2 version, don't inline it. |
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265 bool AdvancedThresholdPolicy::should_not_inline(ciEnv* env, ciMethod* callee) { |
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266 CompLevel comp_level = (CompLevel)env->comp_level(); |
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267 if (comp_level == CompLevel_full_profile || |
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268 comp_level == CompLevel_limited_profile) { |
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269 return callee->highest_osr_comp_level() == CompLevel_full_optimization; |
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270 } |
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271 return false; |
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272 } |
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273 |
| 2348 | 274 // Create MDO if necessary. |
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275 void AdvancedThresholdPolicy::create_mdo(methodHandle mh, JavaThread* THREAD) { |
| 2348 | 276 if (mh->is_native() || mh->is_abstract() || mh->is_accessor()) return; |
| 277 if (mh->method_data() == NULL) { | |
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278 Method::build_interpreter_method_data(mh, CHECK_AND_CLEAR); |
| 2348 | 279 } |
| 280 } | |
| 281 | |
| 282 | |
| 283 /* | |
| 284 * Method states: | |
| 285 * 0 - interpreter (CompLevel_none) | |
| 286 * 1 - pure C1 (CompLevel_simple) | |
| 287 * 2 - C1 with invocation and backedge counting (CompLevel_limited_profile) | |
| 288 * 3 - C1 with full profiling (CompLevel_full_profile) | |
| 289 * 4 - C2 (CompLevel_full_optimization) | |
| 290 * | |
| 291 * Common state transition patterns: | |
| 292 * a. 0 -> 3 -> 4. | |
| 293 * The most common path. But note that even in this straightforward case | |
| 294 * profiling can start at level 0 and finish at level 3. | |
| 295 * | |
| 296 * b. 0 -> 2 -> 3 -> 4. | |
| 297 * This case occures when the load on C2 is deemed too high. So, instead of transitioning | |
| 298 * into state 3 directly and over-profiling while a method is in the C2 queue we transition to | |
| 299 * level 2 and wait until the load on C2 decreases. This path is disabled for OSRs. | |
| 300 * | |
| 301 * c. 0 -> (3->2) -> 4. | |
| 302 * In this case we enqueue a method for compilation at level 3, but the C1 queue is long enough | |
| 303 * to enable the profiling to fully occur at level 0. In this case we change the compilation level | |
| 304 * of the method to 2, because it'll allow it to run much faster without full profiling while c2 | |
| 305 * is compiling. | |
| 306 * | |
| 307 * d. 0 -> 3 -> 1 or 0 -> 2 -> 1. | |
| 308 * After a method was once compiled with C1 it can be identified as trivial and be compiled to | |
| 309 * level 1. These transition can also occur if a method can't be compiled with C2 but can with C1. | |
| 310 * | |
| 311 * e. 0 -> 4. | |
| 312 * This can happen if a method fails C1 compilation (it will still be profiled in the interpreter) | |
| 313 * or because of a deopt that didn't require reprofiling (compilation won't happen in this case because | |
| 314 * the compiled version already exists). | |
| 315 * | |
| 316 * Note that since state 0 can be reached from any other state via deoptimization different loops | |
| 317 * are possible. | |
| 318 * | |
| 319 */ | |
| 320 | |
| 321 // Common transition function. Given a predicate determines if a method should transition to another level. | |
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322 CompLevel AdvancedThresholdPolicy::common(Predicate p, Method* method, CompLevel cur_level, bool disable_feedback) { |
| 2348 | 323 CompLevel next_level = cur_level; |
| 324 int i = method->invocation_count(); | |
| 325 int b = method->backedge_count(); | |
| 326 | |
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327 if (is_trivial(method)) { |
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328 next_level = CompLevel_simple; |
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329 } else { |
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330 switch(cur_level) { |
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331 case CompLevel_none: |
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332 // If we were at full profile level, would we switch to full opt? |
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333 if (common(p, method, CompLevel_full_profile, disable_feedback) == CompLevel_full_optimization) { |
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334 next_level = CompLevel_full_optimization; |
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335 } else if ((this->*p)(i, b, cur_level)) { |
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336 // C1-generated fully profiled code is about 30% slower than the limited profile |
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337 // code that has only invocation and backedge counters. The observation is that |
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338 // if C2 queue is large enough we can spend too much time in the fully profiled code |
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339 // while waiting for C2 to pick the method from the queue. To alleviate this problem |
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340 // we introduce a feedback on the C2 queue size. If the C2 queue is sufficiently long |
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341 // we choose to compile a limited profiled version and then recompile with full profiling |
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342 // when the load on C2 goes down. |
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343 if (!disable_feedback && CompileBroker::queue_size(CompLevel_full_optimization) > |
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344 Tier3DelayOn * compiler_count(CompLevel_full_optimization)) { |
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345 next_level = CompLevel_limited_profile; |
| 2348 | 346 } else { |
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347 next_level = CompLevel_full_profile; |
| 2348 | 348 } |
| 349 } | |
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350 break; |
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351 case CompLevel_limited_profile: |
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352 if (is_method_profiled(method)) { |
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353 // Special case: we got here because this method was fully profiled in the interpreter. |
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354 next_level = CompLevel_full_optimization; |
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355 } else { |
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356 MethodData* mdo = method->method_data(); |
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357 if (mdo != NULL) { |
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358 if (mdo->would_profile()) { |
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359 if (disable_feedback || (CompileBroker::queue_size(CompLevel_full_optimization) <= |
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360 Tier3DelayOff * compiler_count(CompLevel_full_optimization) && |
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361 (this->*p)(i, b, cur_level))) { |
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362 next_level = CompLevel_full_profile; |
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363 } |
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364 } else { |
| 2348 | 365 next_level = CompLevel_full_optimization; |
| 366 } | |
| 367 } | |
| 368 } | |
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369 break; |
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370 case CompLevel_full_profile: |
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371 { |
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372 MethodData* mdo = method->method_data(); |
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373 if (mdo != NULL) { |
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374 if (mdo->would_profile()) { |
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375 int mdo_i = mdo->invocation_count_delta(); |
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376 int mdo_b = mdo->backedge_count_delta(); |
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377 if ((this->*p)(mdo_i, mdo_b, cur_level)) { |
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378 next_level = CompLevel_full_optimization; |
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379 } |
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380 } else { |
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381 next_level = CompLevel_full_optimization; |
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382 } |
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383 } |
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384 } |
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385 break; |
| 2348 | 386 } |
| 387 } | |
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388 return MIN2(next_level, (CompLevel)TieredStopAtLevel); |
| 2348 | 389 } |
| 390 | |
| 391 // Determine if a method should be compiled with a normal entry point at a different level. | |
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392 CompLevel AdvancedThresholdPolicy::call_event(Method* method, CompLevel cur_level) { |
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393 CompLevel osr_level = MIN2((CompLevel) method->highest_osr_comp_level(), |
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394 common(&AdvancedThresholdPolicy::loop_predicate, method, cur_level, true)); |
| 2348 | 395 CompLevel next_level = common(&AdvancedThresholdPolicy::call_predicate, method, cur_level); |
| 396 | |
| 397 // If OSR method level is greater than the regular method level, the levels should be | |
| 398 // equalized by raising the regular method level in order to avoid OSRs during each | |
| 399 // invocation of the method. | |
| 400 if (osr_level == CompLevel_full_optimization && cur_level == CompLevel_full_profile) { | |
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401 MethodData* mdo = method->method_data(); |
| 2348 | 402 guarantee(mdo != NULL, "MDO should not be NULL"); |
| 403 if (mdo->invocation_count() >= 1) { | |
| 404 next_level = CompLevel_full_optimization; | |
| 405 } | |
| 406 } else { | |
| 407 next_level = MAX2(osr_level, next_level); | |
| 408 } | |
| 409 return next_level; | |
| 410 } | |
| 411 | |
| 412 // Determine if we should do an OSR compilation of a given method. | |
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413 CompLevel AdvancedThresholdPolicy::loop_event(Method* method, CompLevel cur_level) { |
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414 CompLevel next_level = common(&AdvancedThresholdPolicy::loop_predicate, method, cur_level, true); |
| 2348 | 415 if (cur_level == CompLevel_none) { |
| 416 // If there is a live OSR method that means that we deopted to the interpreter | |
| 417 // for the transition. | |
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418 CompLevel osr_level = MIN2((CompLevel)method->highest_osr_comp_level(), next_level); |
| 2348 | 419 if (osr_level > CompLevel_none) { |
| 420 return osr_level; | |
| 421 } | |
| 422 } | |
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423 return next_level; |
| 2348 | 424 } |
| 425 | |
| 426 // Update the rate and submit compile | |
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427 void AdvancedThresholdPolicy::submit_compile(methodHandle mh, int bci, CompLevel level, JavaThread* thread) { |
| 2348 | 428 int hot_count = (bci == InvocationEntryBci) ? mh->invocation_count() : mh->backedge_count(); |
| 429 update_rate(os::javaTimeMillis(), mh()); | |
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430 CompileBroker::compile_method(mh, bci, level, mh, hot_count, "tiered", thread); |
| 2348 | 431 } |
| 432 | |
| 433 // Handle the invocation event. | |
| 434 void AdvancedThresholdPolicy::method_invocation_event(methodHandle mh, methodHandle imh, | |
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435 CompLevel level, nmethod* nm, JavaThread* thread) { |
| 2348 | 436 if (should_create_mdo(mh(), level)) { |
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437 create_mdo(mh, thread); |
| 2348 | 438 } |
| 439 if (is_compilation_enabled() && !CompileBroker::compilation_is_in_queue(mh, InvocationEntryBci)) { | |
| 440 CompLevel next_level = call_event(mh(), level); | |
| 441 if (next_level != level) { | |
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442 compile(mh, InvocationEntryBci, next_level, thread); |
| 2348 | 443 } |
| 444 } | |
| 445 } | |
| 446 | |
| 447 // Handle the back branch event. Notice that we can compile the method | |
| 448 // with a regular entry from here. | |
| 449 void AdvancedThresholdPolicy::method_back_branch_event(methodHandle mh, methodHandle imh, | |
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450 int bci, CompLevel level, nmethod* nm, JavaThread* thread) { |
| 2348 | 451 if (should_create_mdo(mh(), level)) { |
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452 create_mdo(mh, thread); |
| 2348 | 453 } |
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454 // Check if MDO should be created for the inlined method |
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455 if (should_create_mdo(imh(), level)) { |
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456 create_mdo(imh, thread); |
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457 } |
| 2348 | 458 |
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459 if (is_compilation_enabled()) { |
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460 CompLevel next_osr_level = loop_event(imh(), level); |
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461 CompLevel max_osr_level = (CompLevel)imh->highest_osr_comp_level(); |
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462 // At the very least compile the OSR version |
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463 if (!CompileBroker::compilation_is_in_queue(imh, bci) && next_osr_level != level) { |
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464 compile(imh, bci, next_osr_level, thread); |
| 2348 | 465 } |
| 466 | |
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467 // Use loop event as an opportunity to also check if there's been |
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468 // enough calls. |
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469 CompLevel cur_level, next_level; |
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470 if (mh() != imh()) { // If there is an enclosing method |
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471 guarantee(nm != NULL, "Should have nmethod here"); |
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472 cur_level = comp_level(mh()); |
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473 next_level = call_event(mh(), cur_level); |
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474 |
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475 if (max_osr_level == CompLevel_full_optimization) { |
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476 // The inlinee OSRed to full opt, we need to modify the enclosing method to avoid deopts |
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477 bool make_not_entrant = false; |
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478 if (nm->is_osr_method()) { |
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479 // This is an osr method, just make it not entrant and recompile later if needed |
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480 make_not_entrant = true; |
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481 } else { |
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482 if (next_level != CompLevel_full_optimization) { |
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483 // next_level is not full opt, so we need to recompile the |
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484 // enclosing method without the inlinee |
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485 cur_level = CompLevel_none; |
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486 make_not_entrant = true; |
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487 } |
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488 } |
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489 if (make_not_entrant) { |
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490 if (PrintTieredEvents) { |
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491 int osr_bci = nm->is_osr_method() ? nm->osr_entry_bci() : InvocationEntryBci; |
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492 print_event(MAKE_NOT_ENTRANT, mh(), mh(), osr_bci, level); |
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493 } |
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494 nm->make_not_entrant(); |
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495 } |
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496 } |
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497 if (!CompileBroker::compilation_is_in_queue(mh, InvocationEntryBci)) { |
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498 // Fix up next_level if necessary to avoid deopts |
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499 if (next_level == CompLevel_limited_profile && max_osr_level == CompLevel_full_profile) { |
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500 next_level = CompLevel_full_profile; |
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501 } |
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502 if (cur_level != next_level) { |
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503 compile(mh, InvocationEntryBci, next_level, thread); |
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504 } |
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505 } |
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506 } else { |
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507 cur_level = comp_level(imh()); |
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508 next_level = call_event(imh(), cur_level); |
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509 if (!CompileBroker::compilation_is_in_queue(imh, bci) && next_level != cur_level) { |
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510 compile(imh, InvocationEntryBci, next_level, thread); |
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511 } |
| 2348 | 512 } |
| 513 } | |
| 514 } | |
| 515 | |
| 516 #endif // TIERED |