Mercurial > hg > graal-jvmci-8
annotate src/share/vm/runtime/advancedThresholdPolicy.cpp @ 23760:655fd63024d0
move jvmci flag handling to JVMCIGlobals
author | David Leopoldseder <david.d.leopoldseder@oracle.com> |
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date | Fri, 23 Sep 2016 16:33:12 +0200 |
parents | 3ef45d0a6d77 |
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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" | |
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28 #if INCLUDE_JVMCI |
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29 #include "jvmci/jvmciRuntime.hpp" |
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30 #endif |
2348 | 31 |
32 #ifdef TIERED | |
33 // Print an event. | |
34 void AdvancedThresholdPolicy::print_specific(EventType type, methodHandle mh, methodHandle imh, | |
35 int bci, CompLevel level) { | |
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36 tty->print(" rate="); |
2348 | 37 if (mh->prev_time() == 0) tty->print("n/a"); |
38 else tty->print("%f", mh->rate()); | |
39 | |
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40 tty->print(" k=%.2lf,%.2lf", threshold_scale(CompLevel_full_profile, Tier3LoadFeedback), |
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41 threshold_scale(CompLevel_full_optimization, Tier4LoadFeedback)); |
2348 | 42 |
43 } | |
44 | |
45 void AdvancedThresholdPolicy::initialize() { | |
46 // Turn on ergonomic compiler count selection | |
47 if (FLAG_IS_DEFAULT(CICompilerCountPerCPU) && FLAG_IS_DEFAULT(CICompilerCount)) { | |
48 FLAG_SET_DEFAULT(CICompilerCountPerCPU, true); | |
49 } | |
50 int count = CICompilerCount; | |
51 if (CICompilerCountPerCPU) { | |
52 // Simple log n seems to grow too slowly for tiered, try something faster: log n * log log n | |
53 int log_cpu = log2_intptr(os::active_processor_count()); | |
54 int loglog_cpu = log2_intptr(MAX2(log_cpu, 1)); | |
55 count = MAX2(log_cpu * loglog_cpu, 1) * 3 / 2; | |
56 } | |
57 | |
58 set_c1_count(MAX2(count / 3, 1)); | |
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59 set_c2_count(MAX2(count - c1_count(), 1)); |
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60 FLAG_SET_ERGO(intx, CICompilerCount, c1_count() + c2_count()); |
2348 | 61 |
62 // Some inlining tuning | |
63 #ifdef X86 | |
64 if (FLAG_IS_DEFAULT(InlineSmallCode)) { | |
65 FLAG_SET_DEFAULT(InlineSmallCode, 2000); | |
66 } | |
67 #endif | |
68 | |
69 #ifdef SPARC | |
70 if (FLAG_IS_DEFAULT(InlineSmallCode)) { | |
71 FLAG_SET_DEFAULT(InlineSmallCode, 2500); | |
72 } | |
73 #endif | |
74 | |
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75 set_increase_threshold_at_ratio(); |
2348 | 76 set_start_time(os::javaTimeMillis()); |
77 } | |
78 | |
79 // update_rate() is called from select_task() while holding a compile queue lock. | |
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80 void AdvancedThresholdPolicy::update_rate(jlong t, Method* m) { |
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81 // Skip update if counters are absent. |
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82 // Can't allocate them since we are holding compile queue lock. |
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83 if (m->method_counters() == NULL) return; |
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84 |
2348 | 85 if (is_old(m)) { |
86 // We don't remove old methods from the queue, | |
87 // so we can just zero the rate. | |
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88 m->set_rate(0); |
2348 | 89 return; |
90 } | |
91 | |
92 // We don't update the rate if we've just came out of a safepoint. | |
93 // delta_s is the time since last safepoint in milliseconds. | |
94 jlong delta_s = t - SafepointSynchronize::end_of_last_safepoint(); | |
95 jlong delta_t = t - (m->prev_time() != 0 ? m->prev_time() : start_time()); // milliseconds since the last measurement | |
96 // How many events were there since the last time? | |
97 int event_count = m->invocation_count() + m->backedge_count(); | |
98 int delta_e = event_count - m->prev_event_count(); | |
99 | |
100 // We should be running for at least 1ms. | |
101 if (delta_s >= TieredRateUpdateMinTime) { | |
102 // And we must've taken the previous point at least 1ms before. | |
103 if (delta_t >= TieredRateUpdateMinTime && delta_e > 0) { | |
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104 m->set_prev_time(t); |
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105 m->set_prev_event_count(event_count); |
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106 m->set_rate((float)delta_e / (float)delta_t); // Rate is events per millisecond |
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107 } else { |
2348 | 108 if (delta_t > TieredRateUpdateMaxTime && delta_e == 0) { |
109 // If nothing happened for 25ms, zero the rate. Don't modify prev values. | |
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110 m->set_rate(0); |
2348 | 111 } |
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112 } |
2348 | 113 } |
114 } | |
115 | |
116 // Check if this method has been stale from a given number of milliseconds. | |
117 // See select_task(). | |
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118 bool AdvancedThresholdPolicy::is_stale(jlong t, jlong timeout, Method* m) { |
2348 | 119 jlong delta_s = t - SafepointSynchronize::end_of_last_safepoint(); |
120 jlong delta_t = t - m->prev_time(); | |
121 if (delta_t > timeout && delta_s > timeout) { | |
122 int event_count = m->invocation_count() + m->backedge_count(); | |
123 int delta_e = event_count - m->prev_event_count(); | |
124 // Return true if there were no events. | |
125 return delta_e == 0; | |
126 } | |
127 return false; | |
128 } | |
129 | |
130 // We don't remove old methods from the compile queue even if they have | |
131 // very low activity. See select_task(). | |
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132 bool AdvancedThresholdPolicy::is_old(Method* method) { |
2348 | 133 return method->invocation_count() > 50000 || method->backedge_count() > 500000; |
134 } | |
135 | |
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136 double AdvancedThresholdPolicy::weight(Method* method) { |
2348 | 137 return (method->rate() + 1) * ((method->invocation_count() + 1) * (method->backedge_count() + 1)); |
138 } | |
139 | |
140 // Apply heuristics and return true if x should be compiled before y | |
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141 bool AdvancedThresholdPolicy::compare_methods(Method* x, Method* y) { |
2348 | 142 if (x->highest_comp_level() > y->highest_comp_level()) { |
143 // recompilation after deopt | |
144 return true; | |
145 } else | |
146 if (x->highest_comp_level() == y->highest_comp_level()) { | |
147 if (weight(x) > weight(y)) { | |
148 return true; | |
149 } | |
150 } | |
151 return false; | |
152 } | |
153 | |
154 // Is method profiled enough? | |
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155 bool AdvancedThresholdPolicy::is_method_profiled(Method* method) { |
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156 MethodData* mdo = method->method_data(); |
2348 | 157 if (mdo != NULL) { |
158 int i = mdo->invocation_count_delta(); | |
159 int b = mdo->backedge_count_delta(); | |
160 return call_predicate_helper<CompLevel_full_profile>(i, b, 1); | |
161 } | |
162 return false; | |
163 } | |
164 | |
165 // Called with the queue locked and with at least one element | |
166 CompileTask* AdvancedThresholdPolicy::select_task(CompileQueue* compile_queue) { | |
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167 CompileTask *max_blocking_task = NULL; |
2348 | 168 CompileTask *max_task = NULL; |
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169 Method* max_method = NULL; |
2348 | 170 jlong t = os::javaTimeMillis(); |
171 // Iterate through the queue and find a method with a maximum rate. | |
172 for (CompileTask* task = compile_queue->first(); task != NULL;) { | |
173 CompileTask* next_task = task->next(); | |
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174 Method* method = task->method(); |
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175 update_rate(t, method); |
2348 | 176 if (max_task == NULL) { |
177 max_task = task; | |
178 max_method = method; | |
179 } else { | |
180 // If a method has been stale for some time, remove it from the queue. | |
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181 if (is_stale(t, TieredCompileTaskTimeout, method) && !is_old(method)) { |
2348 | 182 if (PrintTieredEvents) { |
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183 print_event(REMOVE_FROM_QUEUE, method, method, task->osr_bci(), (CompLevel)task->comp_level()); |
2348 | 184 } |
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185 task->log_task_dequeued("stale"); |
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186 compile_queue->remove_and_mark_stale(task); |
2348 | 187 method->clear_queued_for_compilation(); |
188 task = next_task; | |
189 continue; | |
190 } | |
191 | |
192 // Select a method with a higher rate | |
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193 if (compare_methods(method, max_method)) { |
2348 | 194 max_task = task; |
195 max_method = method; | |
196 } | |
197 } | |
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198 if (task->is_blocking()) { |
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199 if (max_blocking_task == NULL || compare_methods(method, max_blocking_task->method())) { |
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200 max_blocking_task = task; |
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201 } |
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202 } |
2348 | 203 task = next_task; |
204 } | |
205 | |
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206 if (max_blocking_task != NULL) { |
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207 // In blocking compilation mode, the CompileBroker will make |
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208 // compilations submitted by a JVMCI compiler thread non-blocking. These |
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209 // compilations should be scheduled after all blocking compilations |
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210 // to service non-compiler related compilations sooner and reduce the |
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211 // chance of such compilations timing out. |
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212 max_task = max_blocking_task; |
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213 max_method = max_task->method(); |
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214 } |
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215 |
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216 if (max_task->comp_level() == CompLevel_full_profile && TieredStopAtLevel > CompLevel_full_profile |
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217 && is_method_profiled(max_method)) { |
2348 | 218 max_task->set_comp_level(CompLevel_limited_profile); |
219 if (PrintTieredEvents) { | |
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220 print_event(UPDATE_IN_QUEUE, max_method, max_method, max_task->osr_bci(), (CompLevel)max_task->comp_level()); |
2348 | 221 } |
222 } | |
223 | |
224 return max_task; | |
225 } | |
226 | |
227 double AdvancedThresholdPolicy::threshold_scale(CompLevel level, int feedback_k) { | |
228 double queue_size = CompileBroker::queue_size(level); | |
229 int comp_count = compiler_count(level); | |
230 double k = queue_size / (feedback_k * comp_count) + 1; | |
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231 |
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232 // Increase C1 compile threshold when the code cache is filled more |
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233 // than specified by IncreaseFirstTierCompileThresholdAt percentage. |
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234 // The main intention is to keep enough free space for C2 compiled code |
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235 // to achieve peak performance if the code cache is under stress. |
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236 if ((TieredStopAtLevel == CompLevel_full_optimization) && (level != CompLevel_full_optimization)) { |
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237 double current_reverse_free_ratio = CodeCache::reverse_free_ratio(); |
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238 if (current_reverse_free_ratio > _increase_threshold_at_ratio) { |
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239 k *= exp(current_reverse_free_ratio - _increase_threshold_at_ratio); |
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240 } |
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241 } |
2348 | 242 return k; |
243 } | |
244 | |
245 // Call and loop predicates determine whether a transition to a higher | |
246 // compilation level should be performed (pointers to predicate functions | |
247 // are passed to common()). | |
248 // Tier?LoadFeedback is basically a coefficient that determines of | |
249 // how many methods per compiler thread can be in the queue before | |
250 // the threshold values double. | |
251 bool AdvancedThresholdPolicy::loop_predicate(int i, int b, CompLevel cur_level) { | |
252 switch(cur_level) { | |
253 case CompLevel_none: | |
254 case CompLevel_limited_profile: { | |
255 double k = threshold_scale(CompLevel_full_profile, Tier3LoadFeedback); | |
256 return loop_predicate_helper<CompLevel_none>(i, b, k); | |
257 } | |
258 case CompLevel_full_profile: { | |
259 double k = threshold_scale(CompLevel_full_optimization, Tier4LoadFeedback); | |
260 return loop_predicate_helper<CompLevel_full_profile>(i, b, k); | |
261 } | |
262 default: | |
263 return true; | |
264 } | |
265 } | |
266 | |
267 bool AdvancedThresholdPolicy::call_predicate(int i, int b, CompLevel cur_level) { | |
268 switch(cur_level) { | |
269 case CompLevel_none: | |
270 case CompLevel_limited_profile: { | |
271 double k = threshold_scale(CompLevel_full_profile, Tier3LoadFeedback); | |
272 return call_predicate_helper<CompLevel_none>(i, b, k); | |
273 } | |
274 case CompLevel_full_profile: { | |
275 double k = threshold_scale(CompLevel_full_optimization, Tier4LoadFeedback); | |
276 return call_predicate_helper<CompLevel_full_profile>(i, b, k); | |
277 } | |
278 default: | |
279 return true; | |
280 } | |
281 } | |
282 | |
283 // If a method is old enough and is still in the interpreter we would want to | |
284 // start profiling without waiting for the compiled method to arrive. | |
285 // We also take the load on compilers into the account. | |
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286 bool AdvancedThresholdPolicy::should_create_mdo(Method* method, CompLevel cur_level) { |
2348 | 287 if (cur_level == CompLevel_none && |
288 CompileBroker::queue_size(CompLevel_full_optimization) <= | |
289 Tier3DelayOn * compiler_count(CompLevel_full_optimization)) { | |
290 int i = method->invocation_count(); | |
291 int b = method->backedge_count(); | |
292 double k = Tier0ProfilingStartPercentage / 100.0; | |
293 return call_predicate_helper<CompLevel_none>(i, b, k) || loop_predicate_helper<CompLevel_none>(i, b, k); | |
294 } | |
295 return false; | |
296 } | |
297 | |
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298 // Inlining control: if we're compiling a profiled method with C1 and the callee |
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299 // is known to have OSRed in a C2 version, don't inline it. |
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300 bool AdvancedThresholdPolicy::should_not_inline(ciEnv* env, ciMethod* callee) { |
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301 CompLevel comp_level = (CompLevel)env->comp_level(); |
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302 if (comp_level == CompLevel_full_profile || |
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303 comp_level == CompLevel_limited_profile) { |
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304 return callee->highest_osr_comp_level() == CompLevel_full_optimization; |
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305 } |
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306 return false; |
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307 } |
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308 |
2348 | 309 // Create MDO if necessary. |
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310 void AdvancedThresholdPolicy::create_mdo(methodHandle mh, JavaThread* THREAD) { |
2348 | 311 if (mh->is_native() || mh->is_abstract() || mh->is_accessor()) return; |
312 if (mh->method_data() == NULL) { | |
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313 Method::build_interpreter_method_data(mh, CHECK_AND_CLEAR); |
2348 | 314 } |
315 } | |
316 | |
317 | |
318 /* | |
319 * Method states: | |
320 * 0 - interpreter (CompLevel_none) | |
321 * 1 - pure C1 (CompLevel_simple) | |
322 * 2 - C1 with invocation and backedge counting (CompLevel_limited_profile) | |
323 * 3 - C1 with full profiling (CompLevel_full_profile) | |
324 * 4 - C2 (CompLevel_full_optimization) | |
325 * | |
326 * Common state transition patterns: | |
327 * a. 0 -> 3 -> 4. | |
328 * The most common path. But note that even in this straightforward case | |
329 * profiling can start at level 0 and finish at level 3. | |
330 * | |
331 * b. 0 -> 2 -> 3 -> 4. | |
332 * This case occures when the load on C2 is deemed too high. So, instead of transitioning | |
333 * into state 3 directly and over-profiling while a method is in the C2 queue we transition to | |
334 * level 2 and wait until the load on C2 decreases. This path is disabled for OSRs. | |
335 * | |
336 * c. 0 -> (3->2) -> 4. | |
337 * In this case we enqueue a method for compilation at level 3, but the C1 queue is long enough | |
338 * to enable the profiling to fully occur at level 0. In this case we change the compilation level | |
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339 * 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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340 * without full profiling while c2 is compiling. |
2348 | 341 * |
342 * d. 0 -> 3 -> 1 or 0 -> 2 -> 1. | |
343 * After a method was once compiled with C1 it can be identified as trivial and be compiled to | |
344 * level 1. These transition can also occur if a method can't be compiled with C2 but can with C1. | |
345 * | |
346 * e. 0 -> 4. | |
347 * This can happen if a method fails C1 compilation (it will still be profiled in the interpreter) | |
348 * or because of a deopt that didn't require reprofiling (compilation won't happen in this case because | |
349 * the compiled version already exists). | |
350 * | |
351 * Note that since state 0 can be reached from any other state via deoptimization different loops | |
352 * are possible. | |
353 * | |
354 */ | |
355 | |
356 // Common transition function. Given a predicate determines if a method should transition to another level. | |
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357 CompLevel AdvancedThresholdPolicy::common(Predicate p, Method* method, CompLevel cur_level, bool disable_feedback) { |
2348 | 358 CompLevel next_level = cur_level; |
359 int i = method->invocation_count(); | |
360 int b = method->backedge_count(); | |
361 | |
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362 if (is_trivial(method)) { |
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363 next_level = CompLevel_simple; |
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364 } else { |
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365 switch(cur_level) { |
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366 case CompLevel_none: |
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367 // If we were at full profile level, would we switch to full opt? |
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368 if (common(p, method, CompLevel_full_profile, disable_feedback) == CompLevel_full_optimization) { |
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369 next_level = CompLevel_full_optimization; |
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370 } else if ((this->*p)(i, b, cur_level)) { |
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371 #if INCLUDE_JVMCI |
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372 if (UseJVMCICompiler) { |
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373 // Since JVMCI takes a while to warm up, its queue inevitably backs up during |
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374 // early VM execution. |
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375 next_level = CompLevel_full_profile; |
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376 break; |
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377 } |
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378 #endif |
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379 // C1-generated fully profiled code is about 30% slower than the limited profile |
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380 // code that has only invocation and backedge counters. The observation is that |
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381 // if C2 queue is large enough we can spend too much time in the fully profiled code |
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382 // while waiting for C2 to pick the method from the queue. To alleviate this problem |
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383 // we introduce a feedback on the C2 queue size. If the C2 queue is sufficiently long |
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384 // we choose to compile a limited profiled version and then recompile with full profiling |
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385 // when the load on C2 goes down. |
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386 if (!disable_feedback && CompileBroker::queue_size(CompLevel_full_optimization) > |
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387 Tier3DelayOn * compiler_count(CompLevel_full_optimization)) { |
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388 next_level = CompLevel_limited_profile; |
2348 | 389 } else { |
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390 next_level = CompLevel_full_profile; |
2348 | 391 } |
392 } | |
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393 break; |
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394 case CompLevel_limited_profile: |
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395 if (is_method_profiled(method)) { |
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396 // Special case: we got here because this method was fully profiled in the interpreter. |
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397 next_level = CompLevel_full_optimization; |
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398 } else { |
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399 MethodData* mdo = method->method_data(); |
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400 if (mdo != NULL) { |
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401 if (mdo->would_profile()) { |
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402 if (disable_feedback || (CompileBroker::queue_size(CompLevel_full_optimization) <= |
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403 Tier3DelayOff * compiler_count(CompLevel_full_optimization) && |
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404 (this->*p)(i, b, cur_level))) { |
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405 next_level = CompLevel_full_profile; |
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406 } |
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407 } else { |
2348 | 408 next_level = CompLevel_full_optimization; |
409 } | |
410 } | |
411 } | |
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412 break; |
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413 case CompLevel_full_profile: |
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414 { |
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415 MethodData* mdo = method->method_data(); |
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416 if (mdo != NULL) { |
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417 if (mdo->would_profile()) { |
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418 int mdo_i = mdo->invocation_count_delta(); |
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419 int mdo_b = mdo->backedge_count_delta(); |
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420 if ((this->*p)(mdo_i, mdo_b, cur_level)) { |
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421 next_level = CompLevel_full_optimization; |
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422 } |
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423 } else { |
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424 next_level = CompLevel_full_optimization; |
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425 } |
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426 } |
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427 } |
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428 break; |
2348 | 429 } |
430 } | |
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431 return MIN2(next_level, (CompLevel)TieredStopAtLevel); |
2348 | 432 } |
433 | |
434 // Determine if a method should be compiled with a normal entry point at a different level. | |
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435 CompLevel AdvancedThresholdPolicy::call_event(Method* method, CompLevel cur_level, JavaThread * thread) { |
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436 CompLevel osr_level = MIN2((CompLevel) method->highest_osr_comp_level(), |
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437 common(&AdvancedThresholdPolicy::loop_predicate, method, cur_level, true)); |
2348 | 438 CompLevel next_level = common(&AdvancedThresholdPolicy::call_predicate, method, cur_level); |
439 | |
440 // If OSR method level is greater than the regular method level, the levels should be | |
441 // equalized by raising the regular method level in order to avoid OSRs during each | |
442 // invocation of the method. | |
443 if (osr_level == CompLevel_full_optimization && cur_level == CompLevel_full_profile) { | |
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444 MethodData* mdo = method->method_data(); |
2348 | 445 guarantee(mdo != NULL, "MDO should not be NULL"); |
446 if (mdo->invocation_count() >= 1) { | |
447 next_level = CompLevel_full_optimization; | |
448 } | |
449 } else { | |
450 next_level = MAX2(osr_level, next_level); | |
451 } | |
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452 #if INCLUDE_JVMCI |
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453 if (UseJVMCICompiler) { |
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454 next_level = JVMCIRuntime::adjust_comp_level(method, false, next_level, thread); |
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455 } |
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456 #endif |
2348 | 457 return next_level; |
458 } | |
459 | |
460 // Determine if we should do an OSR compilation of a given method. | |
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461 CompLevel AdvancedThresholdPolicy::loop_event(Method* method, CompLevel cur_level, JavaThread * thread) { |
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462 CompLevel next_level = common(&AdvancedThresholdPolicy::loop_predicate, method, cur_level, true); |
2348 | 463 if (cur_level == CompLevel_none) { |
464 // If there is a live OSR method that means that we deopted to the interpreter | |
465 // for the transition. | |
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466 CompLevel osr_level = MIN2((CompLevel)method->highest_osr_comp_level(), next_level); |
2348 | 467 if (osr_level > CompLevel_none) { |
468 return osr_level; | |
469 } | |
470 } | |
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471 #if INCLUDE_JVMCI |
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472 if (UseJVMCICompiler) { |
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473 next_level = JVMCIRuntime::adjust_comp_level(method, true, next_level, thread); |
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474 } |
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475 #endif |
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476 return next_level; |
2348 | 477 } |
478 | |
479 // Update the rate and submit compile | |
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480 void AdvancedThresholdPolicy::submit_compile(methodHandle mh, int bci, CompLevel level, JavaThread* thread) { |
2348 | 481 int hot_count = (bci == InvocationEntryBci) ? mh->invocation_count() : mh->backedge_count(); |
482 update_rate(os::javaTimeMillis(), mh()); | |
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483 CompileBroker::compile_method(mh, bci, level, mh, hot_count, "tiered", thread); |
2348 | 484 } |
485 | |
486 // Handle the invocation event. | |
487 void AdvancedThresholdPolicy::method_invocation_event(methodHandle mh, methodHandle imh, | |
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488 CompLevel level, nmethod* nm, JavaThread* thread) { |
2348 | 489 if (should_create_mdo(mh(), level)) { |
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490 create_mdo(mh, thread); |
2348 | 491 } |
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492 if (is_compilation_enabled() && !CompileBroker::compilation_is_in_queue(mh)) { |
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493 CompLevel next_level = call_event(mh(), level, thread); |
2348 | 494 if (next_level != level) { |
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495 compile(mh, InvocationEntryBci, next_level, thread); |
2348 | 496 } |
497 } | |
498 } | |
499 | |
500 // Handle the back branch event. Notice that we can compile the method | |
501 // with a regular entry from here. | |
502 void AdvancedThresholdPolicy::method_back_branch_event(methodHandle mh, methodHandle imh, | |
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503 int bci, CompLevel level, nmethod* nm, JavaThread* thread) { |
2348 | 504 if (should_create_mdo(mh(), level)) { |
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505 create_mdo(mh, thread); |
2348 | 506 } |
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507 // Check if MDO should be created for the inlined method |
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508 if (should_create_mdo(imh(), level)) { |
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509 create_mdo(imh, thread); |
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510 } |
2348 | 511 |
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512 if (is_compilation_enabled()) { |
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513 CompLevel next_osr_level = loop_event(imh(), level, thread); |
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514 CompLevel max_osr_level = (CompLevel)imh->highest_osr_comp_level(); |
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515 // At the very least compile the OSR version |
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516 if (!CompileBroker::compilation_is_in_queue(imh) && (next_osr_level != level)) { |
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517 compile(imh, bci, next_osr_level, thread); |
2348 | 518 } |
519 | |
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520 // Use loop event as an opportunity to also check if there's been |
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521 // enough calls. |
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522 CompLevel cur_level, next_level; |
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523 if (mh() != imh()) { // If there is an enclosing method |
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524 guarantee(nm != NULL, "Should have nmethod here"); |
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525 cur_level = comp_level(mh()); |
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526 next_level = call_event(mh(), cur_level, thread); |
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527 |
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528 if (max_osr_level == CompLevel_full_optimization) { |
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529 // The inlinee OSRed to full opt, we need to modify the enclosing method to avoid deopts |
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530 bool make_not_entrant = false; |
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531 if (nm->is_osr_method()) { |
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532 // This is an osr method, just make it not entrant and recompile later if needed |
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533 make_not_entrant = true; |
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534 } else { |
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535 if (next_level != CompLevel_full_optimization) { |
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536 // next_level is not full opt, so we need to recompile the |
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537 // enclosing method without the inlinee |
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538 cur_level = CompLevel_none; |
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539 make_not_entrant = true; |
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540 } |
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541 } |
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542 if (make_not_entrant) { |
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543 if (PrintTieredEvents) { |
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544 int osr_bci = nm->is_osr_method() ? nm->osr_entry_bci() : InvocationEntryBci; |
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545 print_event(MAKE_NOT_ENTRANT, mh(), mh(), osr_bci, level); |
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546 } |
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547 nm->make_not_entrant(); |
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548 } |
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549 } |
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550 if (!CompileBroker::compilation_is_in_queue(mh)) { |
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551 // Fix up next_level if necessary to avoid deopts |
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552 if (next_level == CompLevel_limited_profile && max_osr_level == CompLevel_full_profile) { |
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553 next_level = CompLevel_full_profile; |
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554 } |
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555 if (cur_level != next_level) { |
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556 compile(mh, InvocationEntryBci, next_level, thread); |
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557 } |
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558 } |
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559 } else { |
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560 cur_level = comp_level(imh()); |
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561 next_level = call_event(imh(), cur_level, thread); |
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562 if (!CompileBroker::compilation_is_in_queue(imh) && (next_level != cur_level)) { |
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563 compile(imh, InvocationEntryBci, next_level, thread); |
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564 } |
2348 | 565 } |
566 } | |
567 } | |
568 | |
569 #endif // TIERED |