Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/g1/g1_globals.hpp @ 2436:8f1042ff784d
7020042: G1: Partially remove fix for 6994628
Summary: Disable reference discovery and processing during concurrent marking by disabling fix for 6994628.
Reviewed-by: tonyp, ysr
| author | johnc |
|---|---|
| date | Fri, 18 Feb 2011 10:07:34 -0800 |
| parents | 371bbc844bf1 |
| children | e1162778c1c8 |
| rev | line source |
|---|---|
| 342 | 1 /* |
| 2149 | 2 * Copyright (c) 2001, 2011, 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 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1_GLOBALS_HPP |
| 26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1_GLOBALS_HPP | |
| 27 | |
| 28 #include "runtime/globals.hpp" | |
| 29 | |
| 342 | 30 // |
| 31 // Defines all globals flags used by the garbage-first compiler. | |
| 32 // | |
| 33 | |
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34 #define G1_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw) \ |
| 342 | 35 \ |
| 751 | 36 product(intx, G1ConfidencePercent, 50, \ |
| 342 | 37 "Confidence level for MMU/pause predictions") \ |
| 38 \ | |
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39 develop(intx, G1MarkingOverheadPercent, 0, \ |
| 342 | 40 "Overhead of concurrent marking") \ |
| 41 \ | |
| 751 | 42 develop(bool, G1Gen, true, \ |
| 342 | 43 "If true, it will enable the generational G1") \ |
| 44 \ | |
| 751 | 45 develop(intx, G1PolicyVerbose, 0, \ |
| 342 | 46 "The verbosity level on G1 policy decisions") \ |
| 47 \ | |
| 48 develop(intx, G1MarkingVerboseLevel, 0, \ | |
| 49 "Level (0-4) of verboseness of the marking code") \ | |
| 50 \ | |
| 1044 | 51 develop(bool, G1PrintReachableAtInitialMark, false, \ |
| 52 "Reachable object dump at the initial mark pause") \ | |
| 53 \ | |
| 54 develop(bool, G1VerifyDuringGCPrintReachable, false, \ | |
| 55 "If conc mark verification fails, dump reachable objects") \ | |
| 56 \ | |
| 57 develop(ccstr, G1PrintReachableBaseFile, NULL, \ | |
| 58 "The base file name for the reachable object dumps") \ | |
| 342 | 59 \ |
| 60 develop(bool, G1TraceMarkStackOverflow, false, \ | |
| 61 "If true, extra debugging code for CM restart for ovflw.") \ | |
| 62 \ | |
| 63 develop(intx, G1PausesBtwnConcMark, -1, \ | |
| 64 "If positive, fixed number of pauses between conc markings") \ | |
| 65 \ | |
| 1282 | 66 diagnostic(bool, G1SummarizeConcMark, false, \ |
| 342 | 67 "Summarize concurrent mark info") \ |
| 68 \ | |
| 751 | 69 diagnostic(bool, G1SummarizeRSetStats, false, \ |
| 342 | 70 "Summarize remembered set processing info") \ |
| 71 \ | |
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72 diagnostic(intx, G1SummarizeRSetStatsPeriod, 0, \ |
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73 "The period (in number of GCs) at which we will generate " \ |
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74 "update buffer processing info " \ |
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75 "(0 means do not periodically generate this info); " \ |
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76 "it also requires -XX:+G1SummarizeRSetStats") \ |
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77 \ |
| 1282 | 78 diagnostic(bool, G1TraceConcRefinement, false, \ |
| 342 | 79 "Trace G1 concurrent refinement") \ |
| 80 \ | |
| 751 | 81 product(intx, G1MarkRegionStackSize, 1024 * 1024, \ |
| 342 | 82 "Size of the region stack for concurrent marking.") \ |
| 83 \ | |
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84 product(double, G1ConcMarkStepDurationMillis, 10.0, \ |
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85 "Target duration of individual concurrent marking steps " \ |
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86 "in milliseconds.") \ |
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87 \ |
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88 product(intx, G1RefProcDrainInterval, 10, \ |
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89 "The number of discovered reference objects to process before " \ |
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90 "draining concurrent marking work queues.") \ |
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91 \ |
| 2436 | 92 experimental(bool, G1UseConcMarkReferenceProcessing, false, \ |
| 93 "If true, enable reference discovery during concurrent " \ | |
| 94 "marking and reference processing at the end of remark " \ | |
| 95 "(unsafe).") \ | |
| 96 \ | |
| 342 | 97 develop(bool, G1SATBBarrierPrintNullPreVals, false, \ |
| 98 "If true, count frac of ptr writes with null pre-vals.") \ | |
| 99 \ | |
| 1282 | 100 product(intx, G1SATBBufferSize, 1*K, \ |
| 342 | 101 "Number of entries in an SATB log buffer.") \ |
| 102 \ | |
| 1282 | 103 develop(intx, G1SATBProcessCompletedThreshold, 20, \ |
| 342 | 104 "Number of completed buffers that triggers log processing.") \ |
| 105 \ | |
| 2149 | 106 product(uintx, G1SATBBufferEnqueueingThresholdPercent, 60, \ |
| 107 "Before enqueueing them, each mutator thread tries to do some " \ | |
| 108 "filtering on the SATB buffers it generates. If post-filtering " \ | |
| 109 "the percentage of retained entries is over this threshold " \ | |
| 110 "the buffer will be enqueued for processing. A value of 0 " \ | |
| 111 "specifies that mutator threads should not do such filtering.") \ | |
| 112 \ | |
| 342 | 113 develop(intx, G1ExtraRegionSurvRate, 33, \ |
| 114 "If the young survival rate is S, and there's room left in " \ | |
| 115 "to-space, we will allow regions whose survival rate is up to " \ | |
| 116 "S + (1 - S)*X, where X is this parameter (as a fraction.)") \ | |
| 117 \ | |
| 118 develop(intx, G1InitYoungSurvRatio, 50, \ | |
| 119 "Expected Survival Rate for newly allocated bytes") \ | |
| 120 \ | |
| 121 develop(bool, G1SATBPrintStubs, false, \ | |
| 122 "If true, print generated stubs for the SATB barrier") \ | |
| 123 \ | |
| 1282 | 124 experimental(intx, G1ExpandByPercentOfAvailable, 20, \ |
| 342 | 125 "When expanding, % of uncommitted space to claim.") \ |
| 126 \ | |
| 127 develop(bool, G1RSBarrierRegionFilter, true, \ | |
| 128 "If true, generate region filtering code in RS barrier") \ | |
| 129 \ | |
| 130 develop(bool, G1RSBarrierNullFilter, true, \ | |
| 131 "If true, generate null-pointer filtering code in RS barrier") \ | |
| 132 \ | |
| 133 develop(bool, G1PrintCTFilterStats, false, \ | |
| 134 "If true, print stats on RS filtering effectiveness") \ | |
| 135 \ | |
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136 develop(bool, G1DeferredRSUpdate, true, \ |
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137 "If true, use deferred RS updates") \ |
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138 \ |
| 342 | 139 develop(bool, G1RSLogCheckCardTable, false, \ |
| 140 "If true, verify that no dirty cards remain after RS log " \ | |
| 141 "processing.") \ | |
| 142 \ | |
| 143 develop(bool, G1RSCountHisto, false, \ | |
| 144 "If true, print a histogram of RS occupancies after each pause") \ | |
| 145 \ | |
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146 product(bool, G1PrintRegionLivenessInfo, false, \ |
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147 "Prints the liveness information for all regions in the heap " \ |
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148 "at the end of a marking cycle.") \ |
| 342 | 149 \ |
| 150 develop(bool, G1PrintParCleanupStats, false, \ | |
| 151 "When true, print extra stats about parallel cleanup.") \ | |
| 152 \ | |
| 153 develop(bool, G1DisablePreBarrier, false, \ | |
| 154 "Disable generation of pre-barrier (i.e., marking barrier) ") \ | |
| 155 \ | |
| 156 develop(bool, G1DisablePostBarrier, false, \ | |
| 157 "Disable generation of post-barrier (i.e., RS barrier) ") \ | |
| 158 \ | |
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159 product(intx, G1UpdateBufferSize, 256, \ |
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160 "Size of an update buffer") \ |
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161 \ |
| 1282 | 162 product(intx, G1ConcRefinementYellowZone, 0, \ |
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163 "Number of enqueued update buffers that will " \ |
| 1111 | 164 "trigger concurrent processing. Will be selected ergonomically " \ |
| 165 "by default.") \ | |
| 166 \ | |
| 1282 | 167 product(intx, G1ConcRefinementRedZone, 0, \ |
| 1111 | 168 "Maximum number of enqueued update buffers before mutator " \ |
| 169 "threads start processing new ones instead of enqueueing them. " \ | |
| 170 "Will be selected ergonomically by default. Zero will disable " \ | |
| 171 "concurrent processing.") \ | |
| 172 \ | |
| 1282 | 173 product(intx, G1ConcRefinementGreenZone, 0, \ |
| 1111 | 174 "The number of update buffers that are left in the queue by the " \ |
| 175 "concurrent processing threads. Will be selected ergonomically " \ | |
| 176 "by default.") \ | |
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177 \ |
| 1282 | 178 product(intx, G1ConcRefinementServiceIntervalMillis, 300, \ |
| 1111 | 179 "The last concurrent refinement thread wakes up every " \ |
| 180 "specified number of milliseconds to do miscellaneous work.") \ | |
| 181 \ | |
| 1282 | 182 product(intx, G1ConcRefinementThresholdStep, 0, \ |
| 1111 | 183 "Each time the rset update queue increases by this amount " \ |
| 184 "activate the next refinement thread if available. " \ | |
| 185 "Will be selected ergonomically by default.") \ | |
| 186 \ | |
| 1282 | 187 product(intx, G1RSetUpdatingPauseTimePercent, 10, \ |
| 1111 | 188 "A target percentage of time that is allowed to be spend on " \ |
| 189 "process RS update buffers during the collection pause.") \ | |
| 190 \ | |
| 1282 | 191 product(bool, G1UseAdaptiveConcRefinement, true, \ |
| 1111 | 192 "Select green, yellow and red zones adaptively to meet the " \ |
| 193 "the pause requirements.") \ | |
| 342 | 194 \ |
| 195 develop(intx, G1ConcRSLogCacheSize, 10, \ | |
| 196 "Log base 2 of the length of conc RS hot-card cache.") \ | |
| 197 \ | |
| 751 | 198 develop(intx, G1ConcRSHotCardLimit, 4, \ |
| 342 | 199 "The threshold that defines (>=) a hot card.") \ |
| 200 \ | |
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201 develop(intx, G1MaxHotCardCountSizePercent, 25, \ |
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202 "The maximum size of the hot card count cache as a " \ |
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203 "percentage of the number of cards for the maximum heap.") \ |
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204 \ |
| 342 | 205 develop(bool, G1PrintOopAppls, false, \ |
| 206 "When true, print applications of closures to external locs.") \ | |
| 207 \ | |
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208 develop(intx, G1RSetRegionEntriesBase, 256, \ |
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209 "Max number of regions in a fine-grain table per MB.") \ |
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210 \ |
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211 product(intx, G1RSetRegionEntries, 0, \ |
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212 "Max number of regions for which we keep bitmaps." \ |
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213 "Will be set ergonomically by default") \ |
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214 \ |
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215 develop(intx, G1RSetSparseRegionEntriesBase, 4, \ |
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216 "Max number of entries per region in a sparse table " \ |
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217 "per MB.") \ |
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218 \ |
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219 product(intx, G1RSetSparseRegionEntries, 0, \ |
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220 "Max number of entries per region in a sparse table." \ |
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221 "Will be set ergonomically by default.") \ |
| 342 | 222 \ |
| 223 develop(bool, G1RecordHRRSOops, false, \ | |
| 224 "When true, record recent calls to rem set operations.") \ | |
| 225 \ | |
| 226 develop(bool, G1RecordHRRSEvents, false, \ | |
| 227 "When true, record recent calls to rem set operations.") \ | |
| 228 \ | |
| 229 develop(intx, G1MaxVerifyFailures, -1, \ | |
| 230 "The maximum number of verification failrues to print. " \ | |
| 231 "-1 means print all.") \ | |
| 232 \ | |
| 233 develop(bool, G1ScrubRemSets, true, \ | |
| 234 "When true, do RS scrubbing after cleanup.") \ | |
| 235 \ | |
| 236 develop(bool, G1RSScrubVerbose, false, \ | |
| 237 "When true, do RS scrubbing with verbose output.") \ | |
| 238 \ | |
| 239 develop(bool, G1YoungSurvRateVerbose, false, \ | |
| 240 "print out the survival rate of young regions according to age.") \ | |
| 241 \ | |
| 242 develop(intx, G1YoungSurvRateNumRegionsSummary, 0, \ | |
| 243 "the number of regions for which we'll print a surv rate " \ | |
| 244 "summary.") \ | |
| 245 \ | |
| 1282 | 246 product(intx, G1ReservePercent, 10, \ |
| 342 | 247 "It determines the minimum reserve we should have in the heap " \ |
| 248 "to minimize the probability of promotion failure.") \ | |
| 249 \ | |
| 1282 | 250 diagnostic(bool, G1PrintHeapRegions, false, \ |
| 342 | 251 "If set G1 will print information on which regions are being " \ |
| 252 "allocated and which are reclaimed.") \ | |
| 253 \ | |
| 254 develop(bool, G1HRRSUseSparseTable, true, \ | |
| 255 "When true, use sparse table to save space.") \ | |
| 256 \ | |
| 257 develop(bool, G1HRRSFlushLogBuffersOnVerify, false, \ | |
| 258 "Forces flushing of log buffers before verification.") \ | |
| 259 \ | |
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260 develop(bool, G1FailOnFPError, false, \ |
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261 "When set, G1 will fail when it encounters an FP 'error', " \ |
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262 "so as to allow debugging") \ |
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263 \ |
| 751 | 264 develop(bool, G1FixedTenuringThreshold, false, \ |
| 545 | 265 "When set, G1 will not adjust the tenuring threshold") \ |
| 266 \ | |
| 751 | 267 develop(bool, G1FixedEdenSize, false, \ |
| 545 | 268 "When set, G1 will not allocate unused survivor space regions") \ |
| 269 \ | |
| 751 | 270 develop(uintx, G1FixedSurvivorSpaceSize, 0, \ |
| 545 | 271 "If non-0 is the size of the G1 survivor space, " \ |
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272 "otherwise SurvivorRatio is used to determine the size") \ |
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273 \ |
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274 product(uintx, G1HeapRegionSize, 0, \ |
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275 "Size of the G1 regions.") \ |
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276 \ |
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277 experimental(bool, G1UseParallelRSetUpdating, true, \ |
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278 "Enables the parallelization of remembered set updating " \ |
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279 "during evacuation pauses") \ |
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280 \ |
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281 experimental(bool, G1UseParallelRSetScanning, true, \ |
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282 "Enables the parallelization of remembered set scanning " \ |
| 794 | 283 "during evacuation pauses") \ |
| 284 \ | |
| 1282 | 285 product(uintx, G1ConcRefinementThreads, 0, \ |
| 794 | 286 "If non-0 is the number of parallel rem set update threads, " \ |
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287 "otherwise the value is determined ergonomically.") \ |
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288 \ |
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289 develop(intx, G1CardCountCacheExpandThreshold, 16, \ |
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290 "Expand the card count cache if the number of collisions for " \ |
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291 "a particular entry exceeds this value.") \ |
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292 \ |
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293 develop(bool, G1VerifyCTCleanup, false, \ |
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294 "Verify card table cleanup.") \ |
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295 \ |
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296 product(uintx, G1RSetScanBlockSize, 64, \ |
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297 "Size of a work unit of cards claimed by a worker thread" \ |
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298 "during RSet scanning.") \ |
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299 \ |
| 2152 | 300 develop(uintx, G1SecondaryFreeListAppendLength, 5, \ |
| 301 "The number of regions we will add to the secondary free list " \ | |
| 302 "at every append operation") \ | |
| 303 \ | |
| 304 develop(bool, G1ConcRegionFreeingVerbose, false, \ | |
| 305 "Enables verboseness during concurrent region freeing") \ | |
| 306 \ | |
| 307 develop(bool, G1StressConcRegionFreeing, false, \ | |
| 308 "It stresses the concurrent region freeing operation") \ | |
| 309 \ | |
| 310 develop(uintx, G1StressConcRegionFreeingDelayMillis, 0, \ | |
| 311 "Artificial delay during concurrent region freeing") \ | |
| 312 \ | |
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313 develop(bool, ReduceInitialCardMarksForG1, false, \ |
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314 "When ReduceInitialCardMarks is true, this flag setting " \ |
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315 " controls whether G1 allows the RICM optimization") \ |
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316 \ |
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317 develop(bool, G1ExitOnExpansionFailure, false, \ |
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318 "Raise a fatal VM exit out of memory failure in the event " \ |
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319 " that heap expansion fails due to running out of swap.") |
| 342 | 320 |
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321 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) |
| 1972 | 322 |
| 323 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1_GLOBALS_HPP |