annotate src/share/vm/gc_implementation/g1/g1_globals.hpp @ 3456:7994a5a35fcf

6921087: G1: remove per-GC-thread expansion tables from the fine-grain remembered sets Summary: Remove the per-thread expansion tables (PosParPRT) and associated expansion and compaction from the fine grain RSet entries. This code has been unused for a while. Reviewed-by: johnc, brutisso Contributed-by: Thomas Schatzl <thomas.schatzl@jku.at>
author johnc
date Mon, 25 Jun 2012 16:00:55 -0700
parents f7a8920427a6
children 3650da95d2ee
rev   line source
ysr@342 1 /*
tonyp@3104 2 * Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved.
ysr@342 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
ysr@342 4 *
ysr@342 5 * This code is free software; you can redistribute it and/or modify it
ysr@342 6 * under the terms of the GNU General Public License version 2 only, as
ysr@342 7 * published by the Free Software Foundation.
ysr@342 8 *
ysr@342 9 * This code is distributed in the hope that it will be useful, but WITHOUT
ysr@342 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
ysr@342 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
ysr@342 12 * version 2 for more details (a copy is included in the LICENSE file that
ysr@342 13 * accompanied this code).
ysr@342 14 *
ysr@342 15 * You should have received a copy of the GNU General Public License version
ysr@342 16 * 2 along with this work; if not, write to the Free Software Foundation,
ysr@342 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
ysr@342 18 *
trims@1472 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1472 20 * or visit www.oracle.com if you need additional information or have any
trims@1472 21 * questions.
ysr@342 22 *
ysr@342 23 */
ysr@342 24
stefank@1879 25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1_GLOBALS_HPP
stefank@1879 26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1_GLOBALS_HPP
stefank@1879 27
stefank@1879 28 #include "runtime/globals.hpp"
ysr@342 29 //
ysr@342 30 // Defines all globals flags used by the garbage-first compiler.
ysr@342 31 //
ysr@342 32
ysr@350 33 #define G1_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw) \
ysr@342 34 \
johnc@751 35 product(intx, G1ConfidencePercent, 50, \
ysr@342 36 "Confidence level for MMU/pause predictions") \
ysr@342 37 \
tonyp@884 38 develop(intx, G1MarkingOverheadPercent, 0, \
ysr@342 39 "Overhead of concurrent marking") \
ysr@342 40 \
ysr@342 41 develop(intx, G1MarkingVerboseLevel, 0, \
ysr@342 42 "Level (0-4) of verboseness of the marking code") \
ysr@342 43 \
tonyp@1044 44 develop(bool, G1PrintReachableAtInitialMark, false, \
tonyp@1044 45 "Reachable object dump at the initial mark pause") \
tonyp@1044 46 \
tonyp@1044 47 develop(bool, G1VerifyDuringGCPrintReachable, false, \
tonyp@1044 48 "If conc mark verification fails, dump reachable objects") \
tonyp@1044 49 \
tonyp@1044 50 develop(ccstr, G1PrintReachableBaseFile, NULL, \
tonyp@1044 51 "The base file name for the reachable object dumps") \
ysr@342 52 \
ysr@342 53 develop(bool, G1TraceMarkStackOverflow, false, \
ysr@342 54 "If true, extra debugging code for CM restart for ovflw.") \
ysr@342 55 \
johnc@3456 56 develop(bool, G1TraceHeapRegionRememberedSet, false, \
johnc@3456 57 "Enables heap region remembered set debug logs") \
johnc@3456 58 \
tonyp@1282 59 diagnostic(bool, G1SummarizeConcMark, false, \
ysr@342 60 "Summarize concurrent mark info") \
ysr@342 61 \
johnc@751 62 diagnostic(bool, G1SummarizeRSetStats, false, \
ysr@342 63 "Summarize remembered set processing info") \
ysr@342 64 \
tonyp@884 65 diagnostic(intx, G1SummarizeRSetStatsPeriod, 0, \
tonyp@884 66 "The period (in number of GCs) at which we will generate " \
tonyp@884 67 "update buffer processing info " \
tonyp@884 68 "(0 means do not periodically generate this info); " \
tonyp@884 69 "it also requires -XX:+G1SummarizeRSetStats") \
tonyp@884 70 \
tonyp@1282 71 diagnostic(bool, G1TraceConcRefinement, false, \
ysr@342 72 "Trace G1 concurrent refinement") \
ysr@342 73 \
johnc@2059 74 product(double, G1ConcMarkStepDurationMillis, 10.0, \
johnc@2059 75 "Target duration of individual concurrent marking steps " \
johnc@2059 76 "in milliseconds.") \
johnc@2059 77 \
johnc@2059 78 product(intx, G1RefProcDrainInterval, 10, \
johnc@2059 79 "The number of discovered reference objects to process before " \
johnc@2059 80 "draining concurrent marking work queues.") \
johnc@2059 81 \
johnc@2346 82 experimental(bool, G1UseConcMarkReferenceProcessing, true, \
johnc@2283 83 "If true, enable reference discovery during concurrent " \
johnc@2346 84 "marking and reference processing at the end of remark.") \
ysr@342 85 \
tonyp@1282 86 product(intx, G1SATBBufferSize, 1*K, \
ysr@342 87 "Number of entries in an SATB log buffer.") \
ysr@342 88 \
tonyp@1282 89 develop(intx, G1SATBProcessCompletedThreshold, 20, \
ysr@342 90 "Number of completed buffers that triggers log processing.") \
ysr@342 91 \
tonyp@2034 92 product(uintx, G1SATBBufferEnqueueingThresholdPercent, 60, \
tonyp@2034 93 "Before enqueueing them, each mutator thread tries to do some " \
tonyp@2034 94 "filtering on the SATB buffers it generates. If post-filtering " \
tonyp@2034 95 "the percentage of retained entries is over this threshold " \
tonyp@2034 96 "the buffer will be enqueued for processing. A value of 0 " \
tonyp@2034 97 "specifies that mutator threads should not do such filtering.") \
tonyp@2034 98 \
ysr@342 99 develop(intx, G1ExtraRegionSurvRate, 33, \
ysr@342 100 "If the young survival rate is S, and there's room left in " \
ysr@342 101 "to-space, we will allow regions whose survival rate is up to " \
ysr@342 102 "S + (1 - S)*X, where X is this parameter (as a fraction.)") \
ysr@342 103 \
ysr@342 104 develop(intx, G1InitYoungSurvRatio, 50, \
ysr@342 105 "Expected Survival Rate for newly allocated bytes") \
ysr@342 106 \
ysr@342 107 develop(bool, G1SATBPrintStubs, false, \
ysr@342 108 "If true, print generated stubs for the SATB barrier") \
ysr@342 109 \
tonyp@1282 110 experimental(intx, G1ExpandByPercentOfAvailable, 20, \
ysr@342 111 "When expanding, % of uncommitted space to claim.") \
ysr@342 112 \
ysr@342 113 develop(bool, G1RSBarrierRegionFilter, true, \
ysr@342 114 "If true, generate region filtering code in RS barrier") \
ysr@342 115 \
ysr@342 116 develop(bool, G1RSBarrierNullFilter, true, \
ysr@342 117 "If true, generate null-pointer filtering code in RS barrier") \
ysr@342 118 \
iveresov@616 119 develop(bool, G1DeferredRSUpdate, true, \
iveresov@616 120 "If true, use deferred RS updates") \
iveresov@616 121 \
ysr@342 122 develop(bool, G1RSLogCheckCardTable, false, \
ysr@342 123 "If true, verify that no dirty cards remain after RS log " \
ysr@342 124 "processing.") \
ysr@342 125 \
ysr@342 126 develop(bool, G1RSCountHisto, false, \
ysr@342 127 "If true, print a histogram of RS occupancies after each pause") \
ysr@342 128 \
tonyp@2686 129 diagnostic(bool, G1PrintRegionLivenessInfo, false, \
tonyp@2686 130 "Prints the liveness information for all regions in the heap " \
tonyp@2686 131 "at the end of a marking cycle.") \
ysr@342 132 \
tonyp@883 133 product(intx, G1UpdateBufferSize, 256, \
tonyp@883 134 "Size of an update buffer") \
tonyp@883 135 \
tonyp@1282 136 product(intx, G1ConcRefinementYellowZone, 0, \
tonyp@883 137 "Number of enqueued update buffers that will " \
iveresov@1111 138 "trigger concurrent processing. Will be selected ergonomically " \
iveresov@1111 139 "by default.") \
tonyp@883 140 \
tonyp@1282 141 product(intx, G1ConcRefinementRedZone, 0, \
tonyp@883 142 "Maximum number of enqueued update buffers before mutator " \
iveresov@1111 143 "threads start processing new ones instead of enqueueing them. " \
iveresov@1111 144 "Will be selected ergonomically by default. Zero will disable " \
iveresov@1111 145 "concurrent processing.") \
iveresov@1111 146 \
tonyp@1282 147 product(intx, G1ConcRefinementGreenZone, 0, \
iveresov@1111 148 "The number of update buffers that are left in the queue by the " \
iveresov@1111 149 "concurrent processing threads. Will be selected ergonomically " \
iveresov@1111 150 "by default.") \
iveresov@1111 151 \
tonyp@1282 152 product(intx, G1ConcRefinementServiceIntervalMillis, 300, \
iveresov@1111 153 "The last concurrent refinement thread wakes up every " \
iveresov@1111 154 "specified number of milliseconds to do miscellaneous work.") \
iveresov@1111 155 \
tonyp@1282 156 product(intx, G1ConcRefinementThresholdStep, 0, \
iveresov@1111 157 "Each time the rset update queue increases by this amount " \
iveresov@1111 158 "activate the next refinement thread if available. " \
iveresov@1111 159 "Will be selected ergonomically by default.") \
iveresov@1111 160 \
tonyp@1282 161 product(intx, G1RSetUpdatingPauseTimePercent, 10, \
iveresov@1111 162 "A target percentage of time that is allowed to be spend on " \
iveresov@1111 163 "process RS update buffers during the collection pause.") \
iveresov@1111 164 \
tonyp@1282 165 product(bool, G1UseAdaptiveConcRefinement, true, \
iveresov@1111 166 "Select green, yellow and red zones adaptively to meet the " \
iveresov@1111 167 "the pause requirements.") \
ysr@342 168 \
ysr@342 169 develop(intx, G1ConcRSLogCacheSize, 10, \
ysr@342 170 "Log base 2 of the length of conc RS hot-card cache.") \
ysr@342 171 \
johnc@751 172 develop(intx, G1ConcRSHotCardLimit, 4, \
ysr@342 173 "The threshold that defines (>=) a hot card.") \
ysr@342 174 \
johnc@2278 175 develop(intx, G1MaxHotCardCountSizePercent, 25, \
johnc@2278 176 "The maximum size of the hot card count cache as a " \
johnc@2278 177 "percentage of the number of cards for the maximum heap.") \
johnc@2278 178 \
ysr@342 179 develop(bool, G1PrintOopAppls, false, \
ysr@342 180 "When true, print applications of closures to external locs.") \
ysr@342 181 \
iveresov@1261 182 develop(intx, G1RSetRegionEntriesBase, 256, \
iveresov@1261 183 "Max number of regions in a fine-grain table per MB.") \
iveresov@1261 184 \
iveresov@1261 185 product(intx, G1RSetRegionEntries, 0, \
iveresov@1261 186 "Max number of regions for which we keep bitmaps." \
iveresov@1261 187 "Will be set ergonomically by default") \
iveresov@1261 188 \
iveresov@1261 189 develop(intx, G1RSetSparseRegionEntriesBase, 4, \
iveresov@1261 190 "Max number of entries per region in a sparse table " \
iveresov@1261 191 "per MB.") \
iveresov@1261 192 \
iveresov@1261 193 product(intx, G1RSetSparseRegionEntries, 0, \
iveresov@1261 194 "Max number of entries per region in a sparse table." \
iveresov@1261 195 "Will be set ergonomically by default.") \
ysr@342 196 \
ysr@342 197 develop(bool, G1RecordHRRSOops, false, \
ysr@342 198 "When true, record recent calls to rem set operations.") \
ysr@342 199 \
ysr@342 200 develop(bool, G1RecordHRRSEvents, false, \
ysr@342 201 "When true, record recent calls to rem set operations.") \
ysr@342 202 \
ysr@342 203 develop(intx, G1MaxVerifyFailures, -1, \
ysr@342 204 "The maximum number of verification failrues to print. " \
ysr@342 205 "-1 means print all.") \
ysr@342 206 \
ysr@342 207 develop(bool, G1ScrubRemSets, true, \
ysr@342 208 "When true, do RS scrubbing after cleanup.") \
ysr@342 209 \
ysr@342 210 develop(bool, G1RSScrubVerbose, false, \
ysr@342 211 "When true, do RS scrubbing with verbose output.") \
ysr@342 212 \
ysr@342 213 develop(bool, G1YoungSurvRateVerbose, false, \
ysr@342 214 "print out the survival rate of young regions according to age.") \
ysr@342 215 \
ysr@342 216 develop(intx, G1YoungSurvRateNumRegionsSummary, 0, \
ysr@342 217 "the number of regions for which we'll print a surv rate " \
ysr@342 218 "summary.") \
ysr@342 219 \
tonyp@2684 220 product(uintx, G1ReservePercent, 10, \
ysr@342 221 "It determines the minimum reserve we should have in the heap " \
ysr@342 222 "to minimize the probability of promotion failure.") \
ysr@342 223 \
tonyp@1282 224 diagnostic(bool, G1PrintHeapRegions, false, \
ysr@342 225 "If set G1 will print information on which regions are being " \
ysr@342 226 "allocated and which are reclaimed.") \
ysr@342 227 \
ysr@342 228 develop(bool, G1HRRSUseSparseTable, true, \
ysr@342 229 "When true, use sparse table to save space.") \
ysr@342 230 \
ysr@342 231 develop(bool, G1HRRSFlushLogBuffersOnVerify, false, \
ysr@342 232 "Forces flushing of log buffers before verification.") \
ysr@342 233 \
ysr@1087 234 develop(bool, G1FailOnFPError, false, \
ysr@1087 235 "When set, G1 will fail when it encounters an FP 'error', " \
ysr@1087 236 "so as to allow debugging") \
ysr@1087 237 \
tonyp@942 238 product(uintx, G1HeapRegionSize, 0, \
tonyp@942 239 "Size of the G1 regions.") \
tonyp@942 240 \
tonyp@1357 241 experimental(bool, G1UseParallelRSetUpdating, true, \
tonyp@638 242 "Enables the parallelization of remembered set updating " \
tonyp@638 243 "during evacuation pauses") \
tonyp@638 244 \
tonyp@1357 245 experimental(bool, G1UseParallelRSetScanning, true, \
tonyp@638 246 "Enables the parallelization of remembered set scanning " \
iveresov@794 247 "during evacuation pauses") \
iveresov@794 248 \
tonyp@1282 249 product(uintx, G1ConcRefinementThreads, 0, \
iveresov@794 250 "If non-0 is the number of parallel rem set update threads, " \
johnc@890 251 "otherwise the value is determined ergonomically.") \
johnc@890 252 \
johnc@890 253 develop(intx, G1CardCountCacheExpandThreshold, 16, \
johnc@890 254 "Expand the card count cache if the number of collisions for " \
apetrusenko@940 255 "a particular entry exceeds this value.") \
apetrusenko@940 256 \
apetrusenko@940 257 develop(bool, G1VerifyCTCleanup, false, \
ysr@1194 258 "Verify card table cleanup.") \
ysr@1194 259 \
iveresov@1261 260 product(uintx, G1RSetScanBlockSize, 64, \
iveresov@1261 261 "Size of a work unit of cards claimed by a worker thread" \
iveresov@1261 262 "during RSet scanning.") \
iveresov@1261 263 \
tonyp@2037 264 develop(uintx, G1SecondaryFreeListAppendLength, 5, \
tonyp@2037 265 "The number of regions we will add to the secondary free list " \
tonyp@2037 266 "at every append operation") \
tonyp@2037 267 \
tonyp@2037 268 develop(bool, G1ConcRegionFreeingVerbose, false, \
tonyp@2037 269 "Enables verboseness during concurrent region freeing") \
tonyp@2037 270 \
tonyp@2037 271 develop(bool, G1StressConcRegionFreeing, false, \
tonyp@2037 272 "It stresses the concurrent region freeing operation") \
tonyp@2037 273 \
tonyp@2037 274 develop(uintx, G1StressConcRegionFreeingDelayMillis, 0, \
tonyp@2037 275 "Artificial delay during concurrent region freeing") \
tonyp@2037 276 \
tonyp@2382 277 develop(uintx, G1DummyRegionsPerGC, 0, \
tonyp@2382 278 "The number of dummy regions G1 will allocate at the end of " \
tonyp@2382 279 "each evacuation pause in order to artificially fill up the " \
tonyp@2382 280 "heap and stress the marking implementation.") \
tonyp@2382 281 \
johnc@2069 282 develop(bool, G1ExitOnExpansionFailure, false, \
johnc@2069 283 "Raise a fatal VM exit out of memory failure in the event " \
tonyp@2413 284 " that heap expansion fails due to running out of swap.") \
tonyp@2413 285 \
tonyp@2413 286 develop(uintx, G1ConcMarkForceOverflow, 0, \
tonyp@2413 287 "The number of times we'll force an overflow during " \
brutisso@2923 288 "concurrent marking") \
brutisso@2923 289 \
brutisso@2923 290 develop(uintx, G1DefaultMinNewGenPercent, 20, \
brutisso@2923 291 "Percentage (0-100) of the heap size to use as minimum " \
brutisso@2923 292 "young gen size.") \
brutisso@2923 293 \
brutisso@2980 294 develop(uintx, G1DefaultMaxNewGenPercent, 80, \
brutisso@2923 295 "Percentage (0-100) of the heap size to use as maximum " \
tonyp@3104 296 "young gen size.") \
tonyp@3104 297 \
tonyp@3232 298 develop(uintx, G1OldCSetRegionLiveThresholdPercent, 90, \
tonyp@3104 299 "Threshold for regions to be added to the collection set. " \
tonyp@3104 300 "Regions with more live bytes that this will not be collected.") \
tonyp@3104 301 \
tonyp@3232 302 product(uintx, G1HeapWastePercent, 5, \
tonyp@3232 303 "Amount of space, expressed as a percentage of the heap size, " \
tonyp@3232 304 "that G1 is willing not to collect to avoid expensive GCs.") \
tonyp@3104 305 \
tonyp@3232 306 product(uintx, G1MixedGCCountTarget, 4, \
tonyp@3232 307 "The target number of mixed GCs after a marking cycle.") \
tonyp@3104 308 \
tonyp@3104 309 develop(uintx, G1OldCSetRegionThresholdPercent, 10, \
tonyp@3104 310 "An upper bound for the number of old CSet regions expressed " \
brutisso@3275 311 "as a percentage of the heap size.") \
brutisso@3275 312 \
brutisso@3275 313 experimental(ccstr, G1LogLevel, NULL, \
brutisso@3275 314 "Log level for G1 logging: fine, finer, finest")
ysr@342 315
ysr@350 316 G1_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_EXPERIMENTAL_FLAG, DECLARE_NOTPRODUCT_FLAG, DECLARE_MANAGEABLE_FLAG, DECLARE_PRODUCT_RW_FLAG)
stefank@1879 317
stefank@1879 318 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1_GLOBALS_HPP