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comparison: js/src/gc/Statistics.h
js/src/gc/Statistics.h
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- TOR_BUG_3246
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| -1:000000000000 | 0:b8f82d92cff5 |
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| 1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- | |
| 2 * vim: set ts=8 sts=4 et sw=4 tw=99: | |
| 3 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #ifndef gc_Statistics_h | |
| 8 #define gc_Statistics_h | |
| 9 | |
| 10 #include "mozilla/DebugOnly.h" | |
| 11 #include "mozilla/PodOperations.h" | |
| 12 | |
| 13 #include "jsalloc.h" | |
| 14 #include "jspubtd.h" | |
| 15 | |
| 16 #include "js/GCAPI.h" | |
| 17 #include "js/Vector.h" | |
| 18 | |
| 19 struct JSCompartment; | |
| 20 | |
| 21 namespace js { | |
| 22 namespace gcstats { | |
| 23 | |
| 24 enum Phase { | |
| 25 PHASE_GC_BEGIN, | |
| 26 PHASE_WAIT_BACKGROUND_THREAD, | |
| 27 PHASE_MARK_DISCARD_CODE, | |
| 28 PHASE_PURGE, | |
| 29 PHASE_MARK, | |
| 30 PHASE_MARK_ROOTS, | |
| 31 PHASE_MARK_DELAYED, | |
| 32 PHASE_SWEEP, | |
| 33 PHASE_SWEEP_MARK, | |
| 34 PHASE_SWEEP_MARK_TYPES, | |
| 35 PHASE_SWEEP_MARK_INCOMING_BLACK, | |
| 36 PHASE_SWEEP_MARK_WEAK, | |
| 37 PHASE_SWEEP_MARK_INCOMING_GRAY, | |
| 38 PHASE_SWEEP_MARK_GRAY, | |
| 39 PHASE_SWEEP_MARK_GRAY_WEAK, | |
| 40 PHASE_FINALIZE_START, | |
| 41 PHASE_SWEEP_ATOMS, | |
| 42 PHASE_SWEEP_COMPARTMENTS, | |
| 43 PHASE_SWEEP_DISCARD_CODE, | |
| 44 PHASE_SWEEP_TABLES, | |
| 45 PHASE_SWEEP_TABLES_WRAPPER, | |
| 46 PHASE_SWEEP_TABLES_BASE_SHAPE, | |
| 47 PHASE_SWEEP_TABLES_INITIAL_SHAPE, | |
| 48 PHASE_SWEEP_TABLES_TYPE_OBJECT, | |
| 49 PHASE_SWEEP_TABLES_BREAKPOINT, | |
| 50 PHASE_SWEEP_TABLES_REGEXP, | |
| 51 PHASE_DISCARD_ANALYSIS, | |
| 52 PHASE_DISCARD_TI, | |
| 53 PHASE_FREE_TI_ARENA, | |
| 54 PHASE_SWEEP_TYPES, | |
| 55 PHASE_SWEEP_OBJECT, | |
| 56 PHASE_SWEEP_STRING, | |
| 57 PHASE_SWEEP_SCRIPT, | |
| 58 PHASE_SWEEP_SHAPE, | |
| 59 PHASE_SWEEP_JITCODE, | |
| 60 PHASE_FINALIZE_END, | |
| 61 PHASE_DESTROY, | |
| 62 PHASE_GC_END, | |
| 63 | |
| 64 PHASE_LIMIT | |
| 65 }; | |
| 66 | |
| 67 enum Stat { | |
| 68 STAT_NEW_CHUNK, | |
| 69 STAT_DESTROY_CHUNK, | |
| 70 STAT_MINOR_GC, | |
| 71 | |
| 72 STAT_LIMIT | |
| 73 }; | |
| 74 | |
| 75 class StatisticsSerializer; | |
| 76 | |
| 77 struct Statistics { | |
| 78 Statistics(JSRuntime *rt); | |
| 79 ~Statistics(); | |
| 80 | |
| 81 void beginPhase(Phase phase); | |
| 82 void endPhase(Phase phase); | |
| 83 | |
| 84 void beginSlice(int collectedCount, int zoneCount, int compartmentCount, JS::gcreason::Reason reason); | |
| 85 void endSlice(); | |
| 86 | |
| 87 void reset(const char *reason) { slices.back().resetReason = reason; } | |
| 88 void nonincremental(const char *reason) { nonincrementalReason = reason; } | |
| 89 | |
| 90 void count(Stat s) { | |
| 91 JS_ASSERT(s < STAT_LIMIT); | |
| 92 counts[s]++; | |
| 93 } | |
| 94 | |
| 95 int64_t beginSCC(); | |
| 96 void endSCC(unsigned scc, int64_t start); | |
| 97 | |
| 98 jschar *formatMessage(); | |
| 99 jschar *formatJSON(uint64_t timestamp); | |
| 100 | |
| 101 private: | |
| 102 JSRuntime *runtime; | |
| 103 | |
| 104 int64_t startupTime; | |
| 105 | |
| 106 FILE *fp; | |
| 107 bool fullFormat; | |
| 108 | |
| 109 /* | |
| 110 * GCs can't really nest, but a second GC can be triggered from within the | |
| 111 * JSGC_END callback. | |
| 112 */ | |
| 113 int gcDepth; | |
| 114 | |
| 115 int collectedCount; | |
| 116 int zoneCount; | |
| 117 int compartmentCount; | |
| 118 const char *nonincrementalReason; | |
| 119 | |
| 120 struct SliceData { | |
| 121 SliceData(JS::gcreason::Reason reason, int64_t start, size_t startFaults) | |
| 122 : reason(reason), resetReason(nullptr), start(start), startFaults(startFaults) | |
| 123 { | |
| 124 mozilla::PodArrayZero(phaseTimes); | |
| 125 } | |
| 126 | |
| 127 JS::gcreason::Reason reason; | |
| 128 const char *resetReason; | |
| 129 int64_t start, end; | |
| 130 size_t startFaults, endFaults; | |
| 131 int64_t phaseTimes[PHASE_LIMIT]; | |
| 132 | |
| 133 int64_t duration() const { return end - start; } | |
| 134 }; | |
| 135 | |
| 136 Vector<SliceData, 8, SystemAllocPolicy> slices; | |
| 137 | |
| 138 /* Most recent time when the given phase started. */ | |
| 139 int64_t phaseStartTimes[PHASE_LIMIT]; | |
| 140 | |
| 141 /* Total time in a given phase for this GC. */ | |
| 142 int64_t phaseTimes[PHASE_LIMIT]; | |
| 143 | |
| 144 /* Total time in a given phase over all GCs. */ | |
| 145 int64_t phaseTotals[PHASE_LIMIT]; | |
| 146 | |
| 147 /* Number of events of this type for this GC. */ | |
| 148 unsigned int counts[STAT_LIMIT]; | |
| 149 | |
| 150 /* Allocated space before the GC started. */ | |
| 151 size_t preBytes; | |
| 152 | |
| 153 #ifdef DEBUG | |
| 154 /* Phases that are currently on stack. */ | |
| 155 static const size_t MAX_NESTING = 8; | |
| 156 Phase phaseNesting[MAX_NESTING]; | |
| 157 #endif | |
| 158 mozilla::DebugOnly<size_t> phaseNestingDepth; | |
| 159 | |
| 160 /* Sweep times for SCCs of compartments. */ | |
| 161 Vector<int64_t, 0, SystemAllocPolicy> sccTimes; | |
| 162 | |
| 163 void beginGC(); | |
| 164 void endGC(); | |
| 165 | |
| 166 void gcDuration(int64_t *total, int64_t *maxPause); | |
| 167 void sccDurations(int64_t *total, int64_t *maxPause); | |
| 168 void printStats(); | |
| 169 bool formatData(StatisticsSerializer &ss, uint64_t timestamp); | |
| 170 | |
| 171 double computeMMU(int64_t resolution); | |
| 172 }; | |
| 173 | |
| 174 struct AutoGCSlice | |
| 175 { | |
| 176 AutoGCSlice(Statistics &stats, int collectedCount, int zoneCount, int compartmentCount, | |
| 177 JS::gcreason::Reason reason | |
| 178 MOZ_GUARD_OBJECT_NOTIFIER_PARAM) | |
| 179 : stats(stats) | |
| 180 { | |
| 181 MOZ_GUARD_OBJECT_NOTIFIER_INIT; | |
| 182 stats.beginSlice(collectedCount, zoneCount, compartmentCount, reason); | |
| 183 } | |
| 184 ~AutoGCSlice() { stats.endSlice(); } | |
| 185 | |
| 186 Statistics &stats; | |
| 187 MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER | |
| 188 }; | |
| 189 | |
| 190 struct AutoPhase | |
| 191 { | |
| 192 AutoPhase(Statistics &stats, Phase phase | |
| 193 MOZ_GUARD_OBJECT_NOTIFIER_PARAM) | |
| 194 : stats(stats), phase(phase) | |
| 195 { | |
| 196 MOZ_GUARD_OBJECT_NOTIFIER_INIT; | |
| 197 stats.beginPhase(phase); | |
| 198 } | |
| 199 ~AutoPhase() { | |
| 200 stats.endPhase(phase); | |
| 201 } | |
| 202 | |
| 203 Statistics &stats; | |
| 204 Phase phase; | |
| 205 MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER | |
| 206 }; | |
| 207 | |
| 208 struct MaybeAutoPhase | |
| 209 { | |
| 210 MaybeAutoPhase(MOZ_GUARD_OBJECT_NOTIFIER_ONLY_PARAM) | |
| 211 : stats(nullptr) | |
| 212 { | |
| 213 MOZ_GUARD_OBJECT_NOTIFIER_INIT; | |
| 214 } | |
| 215 void construct(Statistics &statsArg, Phase phaseArg) | |
| 216 { | |
| 217 JS_ASSERT(!stats); | |
| 218 stats = &statsArg; | |
| 219 phase = phaseArg; | |
| 220 stats->beginPhase(phase); | |
| 221 } | |
| 222 ~MaybeAutoPhase() { | |
| 223 if (stats) | |
| 224 stats->endPhase(phase); | |
| 225 } | |
| 226 | |
| 227 Statistics *stats; | |
| 228 Phase phase; | |
| 229 MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER | |
| 230 }; | |
| 231 | |
| 232 struct AutoSCC | |
| 233 { | |
| 234 AutoSCC(Statistics &stats, unsigned scc | |
| 235 MOZ_GUARD_OBJECT_NOTIFIER_PARAM) | |
| 236 : stats(stats), scc(scc) | |
| 237 { | |
| 238 MOZ_GUARD_OBJECT_NOTIFIER_INIT; | |
| 239 start = stats.beginSCC(); | |
| 240 } | |
| 241 ~AutoSCC() { | |
| 242 stats.endSCC(scc, start); | |
| 243 } | |
| 244 | |
| 245 Statistics &stats; | |
| 246 unsigned scc; | |
| 247 int64_t start; | |
| 248 MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER | |
| 249 }; | |
| 250 | |
| 251 const char *ExplainReason(JS::gcreason::Reason reason); | |
| 252 | |
| 253 } /* namespace gcstats */ | |
| 254 } /* namespace js */ | |
| 255 | |
| 256 #endif /* gc_Statistics_h */ |
