annotate src/share/vm/gc_implementation/g1/g1_globals.hpp @ 1044:6270f80a7331

6890137: G1: revamp reachable object dump Summary: Revamp the reachable object dump debugging facility. Reviewed-by: jmasa, apetrusenko
author tonyp
date Wed, 30 Sep 2009 14:50:51 -0400
parents 2c79770d1f6e
children 23b9a8d315fc
rev   line source
ysr@342 1 /*
xdono@579 2 * Copyright 2001-2009 Sun Microsystems, Inc. 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 *
ysr@342 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
ysr@342 20 * CA 95054 USA or visit www.sun.com if you need additional information or
ysr@342 21 * have any questions.
ysr@342 22 *
ysr@342 23 */
ysr@342 24
ysr@342 25 //
ysr@342 26 // Defines all globals flags used by the garbage-first compiler.
ysr@342 27 //
ysr@342 28
ysr@350 29 #define G1_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw) \
ysr@342 30 \
johnc@751 31 product(intx, G1ParallelGCAllocBufferSize, 8*K, \
ysr@342 32 "Size of parallel G1 allocation buffers in to-space.") \
ysr@342 33 \
johnc@751 34 product(intx, G1ConfidencePercent, 50, \
ysr@342 35 "Confidence level for MMU/pause predictions") \
ysr@342 36 \
tonyp@884 37 develop(intx, G1MarkingOverheadPercent, 0, \
ysr@342 38 "Overhead of concurrent marking") \
ysr@342 39 \
tonyp@942 40 product(uintx, G1YoungGenSize, 0, \
ysr@342 41 "Size of the G1 young generation, 0 is the adaptive policy") \
ysr@342 42 \
johnc@751 43 develop(bool, G1Gen, true, \
ysr@342 44 "If true, it will enable the generational G1") \
ysr@342 45 \
tonyp@884 46 develop(intx, G1GCPercent, 10, \
ysr@342 47 "The desired percent time spent on GC") \
ysr@342 48 \
johnc@751 49 develop(intx, G1PolicyVerbose, 0, \
ysr@342 50 "The verbosity level on G1 policy decisions") \
ysr@342 51 \
ysr@342 52 develop(bool, G1UseHRIntoRS, true, \
ysr@342 53 "Determines whether the 'advanced' HR Into rem set is used.") \
ysr@342 54 \
ysr@342 55 develop(intx, G1MarkingVerboseLevel, 0, \
ysr@342 56 "Level (0-4) of verboseness of the marking code") \
ysr@342 57 \
tonyp@1044 58 develop(bool, G1PrintReachableAtInitialMark, false, \
tonyp@1044 59 "Reachable object dump at the initial mark pause") \
tonyp@1044 60 \
tonyp@1044 61 develop(bool, G1VerifyDuringGCPrintReachable, false, \
tonyp@1044 62 "If conc mark verification fails, dump reachable objects") \
tonyp@1044 63 \
tonyp@1044 64 develop(ccstr, G1PrintReachableBaseFile, NULL, \
tonyp@1044 65 "The base file name for the reachable object dumps") \
ysr@342 66 \
ysr@342 67 develop(bool, G1TraceMarkStackOverflow, false, \
ysr@342 68 "If true, extra debugging code for CM restart for ovflw.") \
ysr@342 69 \
ysr@342 70 develop(intx, G1PausesBtwnConcMark, -1, \
ysr@342 71 "If positive, fixed number of pauses between conc markings") \
ysr@342 72 \
johnc@751 73 diagnostic(bool, G1SummarizeConcurrentMark, false, \
ysr@342 74 "Summarize concurrent mark info") \
ysr@342 75 \
johnc@751 76 diagnostic(bool, G1SummarizeRSetStats, false, \
ysr@342 77 "Summarize remembered set processing info") \
ysr@342 78 \
tonyp@884 79 diagnostic(intx, G1SummarizeRSetStatsPeriod, 0, \
tonyp@884 80 "The period (in number of GCs) at which we will generate " \
tonyp@884 81 "update buffer processing info " \
tonyp@884 82 "(0 means do not periodically generate this info); " \
tonyp@884 83 "it also requires -XX:+G1SummarizeRSetStats") \
tonyp@884 84 \
johnc@751 85 diagnostic(bool, G1SummarizeZFStats, false, \
ysr@342 86 "Summarize zero-filling info") \
ysr@342 87 \
johnc@751 88 develop(bool, G1TraceConcurrentRefinement, false, \
ysr@342 89 "Trace G1 concurrent refinement") \
ysr@342 90 \
johnc@751 91 product(intx, G1MarkStackSize, 2 * 1024 * 1024, \
ysr@342 92 "Size of the mark stack for concurrent marking.") \
ysr@342 93 \
johnc@751 94 product(intx, G1MarkRegionStackSize, 1024 * 1024, \
ysr@342 95 "Size of the region stack for concurrent marking.") \
ysr@342 96 \
ysr@342 97 develop(bool, G1ConcRefine, true, \
ysr@342 98 "If true, run concurrent rem set refinement for G1") \
ysr@342 99 \
ysr@342 100 develop(intx, G1ConcRefineTargTraversals, 4, \
ysr@342 101 "Number of concurrent refinement we try to achieve") \
ysr@342 102 \
ysr@342 103 develop(intx, G1ConcRefineInitialDelta, 4, \
ysr@342 104 "Number of heap regions of alloc ahead of starting collection " \
ysr@342 105 "pause to start concurrent refinement (initially)") \
ysr@342 106 \
johnc@751 107 develop(bool, G1SmoothConcRefine, true, \
ysr@342 108 "Attempts to smooth out the overhead of concurrent refinement") \
ysr@342 109 \
ysr@342 110 develop(bool, G1ConcZeroFill, true, \
ysr@342 111 "If true, run concurrent zero-filling thread") \
ysr@342 112 \
ysr@342 113 develop(intx, G1ConcZFMaxRegions, 1, \
ysr@342 114 "Stop zero-filling when # of zf'd regions reaches") \
ysr@342 115 \
ysr@342 116 product(intx, G1SteadyStateUsed, 90, \
ysr@342 117 "If non-0, try to maintain 'used' at this pct (of max)") \
ysr@342 118 \
ysr@342 119 product(intx, G1SteadyStateUsedDelta, 30, \
ysr@342 120 "If G1SteadyStateUsed is non-0, then do pause this number of " \
ysr@342 121 "of percentage points earlier if no marking is in progress.") \
ysr@342 122 \
ysr@342 123 develop(bool, G1SATBBarrierPrintNullPreVals, false, \
ysr@342 124 "If true, count frac of ptr writes with null pre-vals.") \
ysr@342 125 \
ysr@342 126 product(intx, G1SATBLogBufferSize, 1*K, \
ysr@342 127 "Number of entries in an SATB log buffer.") \
ysr@342 128 \
ysr@342 129 product(intx, G1SATBProcessCompletedThreshold, 20, \
ysr@342 130 "Number of completed buffers that triggers log processing.") \
ysr@342 131 \
ysr@342 132 develop(intx, G1ExtraRegionSurvRate, 33, \
ysr@342 133 "If the young survival rate is S, and there's room left in " \
ysr@342 134 "to-space, we will allow regions whose survival rate is up to " \
ysr@342 135 "S + (1 - S)*X, where X is this parameter (as a fraction.)") \
ysr@342 136 \
ysr@342 137 develop(intx, G1InitYoungSurvRatio, 50, \
ysr@342 138 "Expected Survival Rate for newly allocated bytes") \
ysr@342 139 \
ysr@342 140 develop(bool, G1SATBPrintStubs, false, \
ysr@342 141 "If true, print generated stubs for the SATB barrier") \
ysr@342 142 \
johnc@751 143 product(intx, G1ExpandByPercentOfAvailable, 20, \
ysr@342 144 "When expanding, % of uncommitted space to claim.") \
ysr@342 145 \
ysr@342 146 develop(bool, G1RSBarrierRegionFilter, true, \
ysr@342 147 "If true, generate region filtering code in RS barrier") \
ysr@342 148 \
ysr@342 149 develop(bool, G1RSBarrierNullFilter, true, \
ysr@342 150 "If true, generate null-pointer filtering code in RS barrier") \
ysr@342 151 \
ysr@342 152 develop(bool, G1PrintCTFilterStats, false, \
ysr@342 153 "If true, print stats on RS filtering effectiveness") \
ysr@342 154 \
iveresov@616 155 develop(bool, G1DeferredRSUpdate, true, \
iveresov@616 156 "If true, use deferred RS updates") \
iveresov@616 157 \
ysr@342 158 develop(bool, G1RSLogCheckCardTable, false, \
ysr@342 159 "If true, verify that no dirty cards remain after RS log " \
ysr@342 160 "processing.") \
ysr@342 161 \
ysr@342 162 develop(bool, G1RSCountHisto, false, \
ysr@342 163 "If true, print a histogram of RS occupancies after each pause") \
ysr@342 164 \
ysr@342 165 develop(intx, G1PrintRegionLivenessInfo, 0, \
ysr@342 166 "When > 0, print the occupancies of the <n> best and worst" \
ysr@342 167 "regions.") \
ysr@342 168 \
ysr@342 169 develop(bool, G1PrintParCleanupStats, false, \
ysr@342 170 "When true, print extra stats about parallel cleanup.") \
ysr@342 171 \
ysr@342 172 develop(bool, G1DisablePreBarrier, false, \
ysr@342 173 "Disable generation of pre-barrier (i.e., marking barrier) ") \
ysr@342 174 \
ysr@342 175 develop(bool, G1DisablePostBarrier, false, \
ysr@342 176 "Disable generation of post-barrier (i.e., RS barrier) ") \
ysr@342 177 \
tonyp@883 178 product(intx, G1UpdateBufferSize, 256, \
tonyp@883 179 "Size of an update buffer") \
tonyp@883 180 \
tonyp@883 181 product(intx, G1UpdateBufferQueueProcessingThreshold, 5, \
tonyp@883 182 "Number of enqueued update buffers that will " \
tonyp@883 183 "trigger concurrent processing") \
tonyp@883 184 \
tonyp@883 185 product(intx, G1UpdateBufferQueueMaxLength, 30, \
tonyp@883 186 "Maximum number of enqueued update buffers before mutator " \
tonyp@883 187 "threads start processing new ones instead of enqueueing them") \
ysr@342 188 \
ysr@342 189 develop(intx, G1ConcRSLogCacheSize, 10, \
ysr@342 190 "Log base 2 of the length of conc RS hot-card cache.") \
ysr@342 191 \
johnc@751 192 develop(intx, G1ConcRSHotCardLimit, 4, \
ysr@342 193 "The threshold that defines (>=) a hot card.") \
ysr@342 194 \
ysr@342 195 develop(bool, G1PrintOopAppls, false, \
ysr@342 196 "When true, print applications of closures to external locs.") \
ysr@342 197 \
johnc@751 198 develop(intx, G1LogRSRegionEntries, 7, \
ysr@342 199 "Log_2 of max number of regions for which we keep bitmaps.") \
ysr@342 200 \
ysr@342 201 develop(bool, G1RecordHRRSOops, false, \
ysr@342 202 "When true, record recent calls to rem set operations.") \
ysr@342 203 \
ysr@342 204 develop(bool, G1RecordHRRSEvents, false, \
ysr@342 205 "When true, record recent calls to rem set operations.") \
ysr@342 206 \
ysr@342 207 develop(intx, G1MaxVerifyFailures, -1, \
ysr@342 208 "The maximum number of verification failrues to print. " \
ysr@342 209 "-1 means print all.") \
ysr@342 210 \
ysr@342 211 develop(bool, G1ScrubRemSets, true, \
ysr@342 212 "When true, do RS scrubbing after cleanup.") \
ysr@342 213 \
ysr@342 214 develop(bool, G1RSScrubVerbose, false, \
ysr@342 215 "When true, do RS scrubbing with verbose output.") \
ysr@342 216 \
ysr@342 217 develop(bool, G1YoungSurvRateVerbose, false, \
ysr@342 218 "print out the survival rate of young regions according to age.") \
ysr@342 219 \
ysr@342 220 develop(intx, G1YoungSurvRateNumRegionsSummary, 0, \
ysr@342 221 "the number of regions for which we'll print a surv rate " \
ysr@342 222 "summary.") \
ysr@342 223 \
ysr@342 224 product(bool, G1UseScanOnlyPrefix, false, \
ysr@342 225 "It determines whether the system will calculate an optimum " \
ysr@342 226 "scan-only set.") \
ysr@342 227 \
johnc@751 228 product(intx, G1MinReservePercent, 10, \
ysr@342 229 "It determines the minimum reserve we should have in the heap " \
ysr@342 230 "to minimize the probability of promotion failure.") \
ysr@342 231 \
johnc@751 232 diagnostic(bool, G1PrintRegions, false, \
ysr@342 233 "If set G1 will print information on which regions are being " \
ysr@342 234 "allocated and which are reclaimed.") \
ysr@342 235 \
ysr@342 236 develop(bool, G1HRRSUseSparseTable, true, \
ysr@342 237 "When true, use sparse table to save space.") \
ysr@342 238 \
ysr@342 239 develop(bool, G1HRRSFlushLogBuffersOnVerify, false, \
ysr@342 240 "Forces flushing of log buffers before verification.") \
ysr@342 241 \
johnc@751 242 product(bool, G1UseSurvivorSpaces, true, \
apetrusenko@545 243 "When true, use survivor space.") \
apetrusenko@545 244 \
johnc@751 245 develop(bool, G1FixedTenuringThreshold, false, \
apetrusenko@545 246 "When set, G1 will not adjust the tenuring threshold") \
apetrusenko@545 247 \
johnc@751 248 develop(bool, G1FixedEdenSize, false, \
apetrusenko@545 249 "When set, G1 will not allocate unused survivor space regions") \
apetrusenko@545 250 \
johnc@751 251 develop(uintx, G1FixedSurvivorSpaceSize, 0, \
apetrusenko@545 252 "If non-0 is the size of the G1 survivor space, " \
tonyp@638 253 "otherwise SurvivorRatio is used to determine the size") \
tonyp@638 254 \
tonyp@942 255 product(uintx, G1HeapRegionSize, 0, \
tonyp@942 256 "Size of the G1 regions.") \
tonyp@942 257 \
johnc@751 258 experimental(bool, G1ParallelRSetUpdatingEnabled, false, \
tonyp@638 259 "Enables the parallelization of remembered set updating " \
tonyp@638 260 "during evacuation pauses") \
tonyp@638 261 \
johnc@751 262 experimental(bool, G1ParallelRSetScanningEnabled, false, \
tonyp@638 263 "Enables the parallelization of remembered set scanning " \
iveresov@794 264 "during evacuation pauses") \
iveresov@794 265 \
iveresov@794 266 product(uintx, G1ParallelRSetThreads, 0, \
iveresov@794 267 "If non-0 is the number of parallel rem set update threads, " \
johnc@890 268 "otherwise the value is determined ergonomically.") \
johnc@890 269 \
johnc@890 270 develop(intx, G1CardCountCacheExpandThreshold, 16, \
johnc@890 271 "Expand the card count cache if the number of collisions for " \
apetrusenko@940 272 "a particular entry exceeds this value.") \
apetrusenko@940 273 \
apetrusenko@940 274 develop(bool, G1VerifyCTCleanup, false, \
apetrusenko@940 275 "Verify card table cleanup.")
ysr@342 276
ysr@350 277 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)