Mercurial > hg > graal-jvmci-8
annotate src/share/vm/gc_implementation/g1/survRateGroup.cpp @ 17937:78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
8043029: Change 8037816 breaks HS build with older GCC versions which don't support diagnostic pragmas
8043164: Format warning in traceStream.hpp
Summary: Backport of main fix + two corrections, enables clang compilation, turns on format attributes, corrects/mutes warnings
Reviewed-by: kvn, coleenp, iveresov, twisti
| author | drchase |
|---|---|
| date | Thu, 22 May 2014 15:52:41 -0400 |
| parents | d2a62e0f25eb |
| children |
| rev | line source |
|---|---|
| 342 | 1 /* |
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2 * Copyright (c) 2001, 2014, Oracle and/or its affiliates. All rights reserved. |
| 342 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 342 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" | |
| 27 #include "gc_implementation/g1/g1CollectorPolicy.hpp" | |
| 28 #include "gc_implementation/g1/heapRegion.hpp" | |
| 29 #include "gc_implementation/g1/survRateGroup.hpp" | |
| 30 #include "memory/allocation.hpp" | |
| 342 | 31 |
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32 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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33 |
| 342 | 34 SurvRateGroup::SurvRateGroup(G1CollectorPolicy* g1p, |
| 35 const char* name, | |
| 36 size_t summary_surv_rates_len) : | |
| 37 _g1p(g1p), _name(name), | |
| 38 _summary_surv_rates_len(summary_surv_rates_len), | |
| 39 _summary_surv_rates_max_len(0), | |
| 545 | 40 _summary_surv_rates(NULL), |
| 41 _surv_rate(NULL), | |
| 42 _accum_surv_rate_pred(NULL), | |
| 5938 | 43 _surv_rate_pred(NULL), |
| 44 _stats_arrays_length(0) { | |
| 545 | 45 reset(); |
| 342 | 46 if (summary_surv_rates_len > 0) { |
| 47 size_t length = summary_surv_rates_len; | |
| 6197 | 48 _summary_surv_rates = NEW_C_HEAP_ARRAY(NumberSeq*, length, mtGC); |
| 5938 | 49 for (size_t i = 0; i < length; ++i) { |
| 50 _summary_surv_rates[i] = new NumberSeq(); | |
| 342 | 51 } |
| 52 } | |
| 53 | |
| 54 start_adding_regions(); | |
| 55 } | |
| 56 | |
| 5938 | 57 void SurvRateGroup::reset() { |
| 545 | 58 _all_regions_allocated = 0; |
| 59 _setup_seq_num = 0; | |
| 60 _accum_surv_rate = 0.0; | |
| 61 _last_pred = 0.0; | |
| 62 // the following will set up the arrays with length 1 | |
| 63 _region_num = 1; | |
| 5938 | 64 |
| 65 // The call to stop_adding_regions() will use "new" to refill | |
| 66 // the _surv_rate_pred array, so we need to make sure to call | |
| 67 // "delete". | |
| 68 for (size_t i = 0; i < _stats_arrays_length; ++i) { | |
| 69 delete _surv_rate_pred[i]; | |
| 70 } | |
| 71 _stats_arrays_length = 0; | |
| 72 | |
| 545 | 73 stop_adding_regions(); |
| 74 guarantee( _stats_arrays_length == 1, "invariant" ); | |
| 75 guarantee( _surv_rate_pred[0] != NULL, "invariant" ); | |
| 76 _surv_rate_pred[0]->add(0.4); | |
| 77 all_surviving_words_recorded(false); | |
| 78 _region_num = 0; | |
| 79 } | |
| 80 | |
| 342 | 81 void |
| 82 SurvRateGroup::start_adding_regions() { | |
| 545 | 83 _setup_seq_num = _stats_arrays_length; |
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84 _region_num = 0; |
| 342 | 85 _accum_surv_rate = 0.0; |
| 86 } | |
| 87 | |
| 88 void | |
| 89 SurvRateGroup::stop_adding_regions() { | |
| 545 | 90 if (_region_num > _stats_arrays_length) { |
| 342 | 91 double* old_surv_rate = _surv_rate; |
| 92 double* old_accum_surv_rate_pred = _accum_surv_rate_pred; | |
| 93 TruncatedSeq** old_surv_rate_pred = _surv_rate_pred; | |
| 94 | |
| 6197 | 95 _surv_rate = NEW_C_HEAP_ARRAY(double, _region_num, mtGC); |
| 96 _accum_surv_rate_pred = NEW_C_HEAP_ARRAY(double, _region_num, mtGC); | |
| 97 _surv_rate_pred = NEW_C_HEAP_ARRAY(TruncatedSeq*, _region_num, mtGC); | |
| 342 | 98 |
| 5938 | 99 for (size_t i = 0; i < _stats_arrays_length; ++i) { |
| 342 | 100 _surv_rate_pred[i] = old_surv_rate_pred[i]; |
| 5938 | 101 } |
| 545 | 102 for (size_t i = _stats_arrays_length; i < _region_num; ++i) { |
| 342 | 103 _surv_rate_pred[i] = new TruncatedSeq(10); |
| 104 } | |
| 105 | |
| 545 | 106 _stats_arrays_length = _region_num; |
| 342 | 107 |
| 5938 | 108 if (old_surv_rate != NULL) { |
| 6197 | 109 FREE_C_HEAP_ARRAY(double, old_surv_rate, mtGC); |
| 5938 | 110 } |
| 111 if (old_accum_surv_rate_pred != NULL) { | |
| 6197 | 112 FREE_C_HEAP_ARRAY(double, old_accum_surv_rate_pred, mtGC); |
| 5938 | 113 } |
| 114 if (old_surv_rate_pred != NULL) { | |
| 6197 | 115 FREE_C_HEAP_ARRAY(TruncatedSeq*, old_surv_rate_pred, mtGC); |
| 5938 | 116 } |
| 342 | 117 } |
| 118 | |
| 5938 | 119 for (size_t i = 0; i < _stats_arrays_length; ++i) { |
| 342 | 120 _surv_rate[i] = 0.0; |
| 5938 | 121 } |
| 342 | 122 } |
| 123 | |
| 124 double | |
| 125 SurvRateGroup::accum_surv_rate(size_t adjustment) { | |
| 126 // we might relax this one in the future... | |
| 127 guarantee( adjustment == 0 || adjustment == 1, "pre-condition" ); | |
| 128 | |
| 129 double ret = _accum_surv_rate; | |
| 130 if (adjustment > 0) { | |
| 545 | 131 TruncatedSeq* seq = get_seq(_region_num+1); |
| 342 | 132 double surv_rate = _g1p->get_new_prediction(seq); |
| 133 ret += surv_rate; | |
| 134 } | |
| 135 | |
| 136 return ret; | |
| 137 } | |
| 138 | |
| 139 int | |
| 140 SurvRateGroup::next_age_index() { | |
| 545 | 141 TruncatedSeq* seq = get_seq(_region_num); |
| 342 | 142 double surv_rate = _g1p->get_new_prediction(seq); |
| 143 _accum_surv_rate += surv_rate; | |
| 144 | |
| 545 | 145 ++_region_num; |
| 342 | 146 return (int) ++_all_regions_allocated; |
| 147 } | |
| 148 | |
| 149 void | |
| 150 SurvRateGroup::record_surviving_words(int age_in_group, size_t surv_words) { | |
| 545 | 151 guarantee( 0 <= age_in_group && (size_t) age_in_group < _region_num, |
| 342 | 152 "pre-condition" ); |
| 153 guarantee( _surv_rate[age_in_group] <= 0.00001, | |
| 154 "should only update each slot once" ); | |
| 155 | |
| 156 double surv_rate = (double) surv_words / (double) HeapRegion::GrainWords; | |
| 157 _surv_rate[age_in_group] = surv_rate; | |
| 158 _surv_rate_pred[age_in_group]->add(surv_rate); | |
| 159 if ((size_t)age_in_group < _summary_surv_rates_len) { | |
| 160 _summary_surv_rates[age_in_group]->add(surv_rate); | |
| 161 if ((size_t)(age_in_group+1) > _summary_surv_rates_max_len) | |
| 162 _summary_surv_rates_max_len = age_in_group+1; | |
| 163 } | |
| 164 } | |
| 165 | |
| 166 void | |
| 167 SurvRateGroup::all_surviving_words_recorded(bool propagate) { | |
| 545 | 168 if (propagate && _region_num > 0) { // conservative |
| 169 double surv_rate = _surv_rate_pred[_region_num-1]->last(); | |
| 170 for (size_t i = _region_num; i < _stats_arrays_length; ++i) { | |
| 342 | 171 guarantee( _surv_rate[i] <= 0.00001, |
| 172 "the slot should not have been updated" ); | |
| 173 _surv_rate_pred[i]->add(surv_rate); | |
| 174 } | |
| 175 } | |
| 176 | |
| 177 double accum = 0.0; | |
| 178 double pred = 0.0; | |
| 545 | 179 for (size_t i = 0; i < _stats_arrays_length; ++i) { |
| 342 | 180 pred = _g1p->get_new_prediction(_surv_rate_pred[i]); |
| 181 if (pred > 1.0) pred = 1.0; | |
| 182 accum += pred; | |
| 183 _accum_surv_rate_pred[i] = accum; | |
| 184 // gclog_or_tty->print_cr("age %3d, accum %10.2lf", i, accum); | |
| 185 } | |
| 186 _last_pred = pred; | |
| 187 } | |
| 188 | |
| 189 #ifndef PRODUCT | |
| 190 void | |
| 191 SurvRateGroup::print() { | |
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192 gclog_or_tty->print_cr("Surv Rate Group: %s (%d entries)", |
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193 _name, _region_num); |
| 545 | 194 for (size_t i = 0; i < _region_num; ++i) { |
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195 gclog_or_tty->print_cr(" age %4d surv rate %6.2lf %% pred %6.2lf %%", |
| 342 | 196 i, _surv_rate[i] * 100.0, |
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197 _g1p->get_new_prediction(_surv_rate_pred[i]) * 100.0); |
| 342 | 198 } |
| 199 } | |
| 200 | |
| 201 void | |
| 202 SurvRateGroup::print_surv_rate_summary() { | |
| 203 size_t length = _summary_surv_rates_max_len; | |
| 204 if (length == 0) | |
| 205 return; | |
| 206 | |
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207 gclog_or_tty->cr(); |
| 342 | 208 gclog_or_tty->print_cr("%s Rate Summary (for up to age %d)", _name, length-1); |
| 209 gclog_or_tty->print_cr(" age range survival rate (avg) samples (avg)"); | |
| 210 gclog_or_tty->print_cr(" ---------------------------------------------------------"); | |
| 211 | |
| 212 size_t index = 0; | |
| 213 size_t limit = MIN2((int) length, 10); | |
| 214 while (index < limit) { | |
| 215 gclog_or_tty->print_cr(" %4d %6.2lf%% %6.2lf", | |
| 216 index, _summary_surv_rates[index]->avg() * 100.0, | |
| 217 (double) _summary_surv_rates[index]->num()); | |
| 218 ++index; | |
| 219 } | |
| 220 | |
| 221 gclog_or_tty->print_cr(" ---------------------------------------------------------"); | |
| 222 | |
| 223 int num = 0; | |
| 224 double sum = 0.0; | |
| 225 int samples = 0; | |
| 226 while (index < length) { | |
| 227 ++num; | |
| 228 sum += _summary_surv_rates[index]->avg() * 100.0; | |
| 229 samples += _summary_surv_rates[index]->num(); | |
| 230 ++index; | |
| 231 | |
| 232 if (index == length || num % 10 == 0) { | |
| 233 gclog_or_tty->print_cr(" %4d .. %4d %6.2lf%% %6.2lf", | |
| 234 (index-1) / 10 * 10, index-1, sum / (double) num, | |
| 235 (double) samples / (double) num); | |
| 236 sum = 0.0; | |
| 237 num = 0; | |
| 238 samples = 0; | |
| 239 } | |
| 240 } | |
| 241 | |
| 242 gclog_or_tty->print_cr(" ---------------------------------------------------------"); | |
| 243 } | |
| 244 #endif // PRODUCT |