Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/g1/g1_globals.hpp @ 11979:8d4ff57af591
8022051: G1: Remove some unused G1 flags
Reviewed-by: tschatzl, jmasa
| author | brutisso |
|---|---|
| date | Thu, 01 Aug 2013 17:29:49 +0200 |
| parents | 3a4805ad0005 |
| children | 3cce976666d9 5888334c9c24 |
| rev | line source |
|---|---|
| 342 | 1 /* |
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2 * Copyright (c) 2001, 2013, 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" | |
| 342 | 29 // |
| 30 // Defines all globals flags used by the garbage-first compiler. | |
| 31 // | |
| 32 | |
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33 #define G1_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw) \ |
| 342 | 34 \ |
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35 product(uintx, G1ConfidencePercent, 50, \ |
| 342 | 36 "Confidence level for MMU/pause predictions") \ |
| 37 \ | |
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38 develop(intx, G1MarkingOverheadPercent, 0, \ |
| 342 | 39 "Overhead of concurrent marking") \ |
| 40 \ | |
| 41 develop(intx, G1MarkingVerboseLevel, 0, \ | |
| 42 "Level (0-4) of verboseness of the marking code") \ | |
| 43 \ | |
| 1044 | 44 develop(bool, G1PrintReachableAtInitialMark, false, \ |
| 45 "Reachable object dump at the initial mark pause") \ | |
| 46 \ | |
| 47 develop(bool, G1VerifyDuringGCPrintReachable, false, \ | |
| 48 "If conc mark verification fails, dump reachable objects") \ | |
| 49 \ | |
| 50 develop(ccstr, G1PrintReachableBaseFile, NULL, \ | |
| 51 "The base file name for the reachable object dumps") \ | |
| 342 | 52 \ |
| 53 develop(bool, G1TraceMarkStackOverflow, false, \ | |
| 54 "If true, extra debugging code for CM restart for ovflw.") \ | |
| 55 \ | |
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56 develop(bool, G1TraceHeapRegionRememberedSet, false, \ |
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57 "Enables heap region remembered set debug logs") \ |
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58 \ |
| 1282 | 59 diagnostic(bool, G1SummarizeConcMark, false, \ |
| 342 | 60 "Summarize concurrent mark info") \ |
| 61 \ | |
| 751 | 62 diagnostic(bool, G1SummarizeRSetStats, false, \ |
| 342 | 63 "Summarize remembered set processing info") \ |
| 64 \ | |
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65 diagnostic(intx, G1SummarizeRSetStatsPeriod, 0, \ |
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66 "The period (in number of GCs) at which we will generate " \ |
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67 "update buffer processing info " \ |
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68 "(0 means do not periodically generate this info); " \ |
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69 "it also requires -XX:+G1SummarizeRSetStats") \ |
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70 \ |
| 1282 | 71 diagnostic(bool, G1TraceConcRefinement, false, \ |
| 342 | 72 "Trace G1 concurrent refinement") \ |
| 73 \ | |
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74 product(double, G1ConcMarkStepDurationMillis, 10.0, \ |
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75 "Target duration of individual concurrent marking steps " \ |
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76 "in milliseconds.") \ |
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77 \ |
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78 product(intx, G1RefProcDrainInterval, 10, \ |
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79 "The number of discovered reference objects to process before " \ |
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80 "draining concurrent marking work queues.") \ |
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81 \ |
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82 experimental(bool, G1UseConcMarkReferenceProcessing, true, \ |
| 2436 | 83 "If true, enable reference discovery during concurrent " \ |
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84 "marking and reference processing at the end of remark.") \ |
| 342 | 85 \ |
| 1282 | 86 product(intx, G1SATBBufferSize, 1*K, \ |
| 342 | 87 "Number of entries in an SATB log buffer.") \ |
| 88 \ | |
| 1282 | 89 develop(intx, G1SATBProcessCompletedThreshold, 20, \ |
| 342 | 90 "Number of completed buffers that triggers log processing.") \ |
| 91 \ | |
| 2149 | 92 product(uintx, G1SATBBufferEnqueueingThresholdPercent, 60, \ |
| 93 "Before enqueueing them, each mutator thread tries to do some " \ | |
| 94 "filtering on the SATB buffers it generates. If post-filtering " \ | |
| 95 "the percentage of retained entries is over this threshold " \ | |
| 96 "the buffer will be enqueued for processing. A value of 0 " \ | |
| 97 "specifies that mutator threads should not do such filtering.") \ | |
| 98 \ | |
| 342 | 99 develop(bool, G1SATBPrintStubs, false, \ |
| 100 "If true, print generated stubs for the SATB barrier") \ | |
| 101 \ | |
| 1282 | 102 experimental(intx, G1ExpandByPercentOfAvailable, 20, \ |
| 342 | 103 "When expanding, % of uncommitted space to claim.") \ |
| 104 \ | |
| 105 develop(bool, G1RSBarrierRegionFilter, true, \ | |
| 106 "If true, generate region filtering code in RS barrier") \ | |
| 107 \ | |
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108 develop(bool, G1DeferredRSUpdate, true, \ |
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109 "If true, use deferred RS updates") \ |
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110 \ |
| 342 | 111 develop(bool, G1RSLogCheckCardTable, false, \ |
| 112 "If true, verify that no dirty cards remain after RS log " \ | |
| 113 "processing.") \ | |
| 114 \ | |
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115 diagnostic(bool, G1PrintRegionLivenessInfo, false, \ |
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116 "Prints the liveness information for all regions in the heap " \ |
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117 "at the end of a marking cycle.") \ |
| 342 | 118 \ |
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119 product(intx, G1UpdateBufferSize, 256, \ |
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120 "Size of an update buffer") \ |
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121 \ |
| 1282 | 122 product(intx, G1ConcRefinementYellowZone, 0, \ |
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123 "Number of enqueued update buffers that will " \ |
| 1111 | 124 "trigger concurrent processing. Will be selected ergonomically " \ |
| 125 "by default.") \ | |
| 126 \ | |
| 1282 | 127 product(intx, G1ConcRefinementRedZone, 0, \ |
| 1111 | 128 "Maximum number of enqueued update buffers before mutator " \ |
| 129 "threads start processing new ones instead of enqueueing them. " \ | |
| 130 "Will be selected ergonomically by default. Zero will disable " \ | |
| 131 "concurrent processing.") \ | |
| 132 \ | |
| 1282 | 133 product(intx, G1ConcRefinementGreenZone, 0, \ |
| 1111 | 134 "The number of update buffers that are left in the queue by the " \ |
| 135 "concurrent processing threads. Will be selected ergonomically " \ | |
| 136 "by default.") \ | |
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137 \ |
| 1282 | 138 product(intx, G1ConcRefinementServiceIntervalMillis, 300, \ |
| 1111 | 139 "The last concurrent refinement thread wakes up every " \ |
| 140 "specified number of milliseconds to do miscellaneous work.") \ | |
| 141 \ | |
| 1282 | 142 product(intx, G1ConcRefinementThresholdStep, 0, \ |
| 1111 | 143 "Each time the rset update queue increases by this amount " \ |
| 144 "activate the next refinement thread if available. " \ | |
| 145 "Will be selected ergonomically by default.") \ | |
| 146 \ | |
| 1282 | 147 product(intx, G1RSetUpdatingPauseTimePercent, 10, \ |
| 1111 | 148 "A target percentage of time that is allowed to be spend on " \ |
| 149 "process RS update buffers during the collection pause.") \ | |
| 150 \ | |
| 1282 | 151 product(bool, G1UseAdaptiveConcRefinement, true, \ |
| 1111 | 152 "Select green, yellow and red zones adaptively to meet the " \ |
| 153 "the pause requirements.") \ | |
| 342 | 154 \ |
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155 product(uintx, G1ConcRSLogCacheSize, 10, \ |
| 342 | 156 "Log base 2 of the length of conc RS hot-card cache.") \ |
| 157 \ | |
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158 product(uintx, G1ConcRSHotCardLimit, 4, \ |
| 342 | 159 "The threshold that defines (>=) a hot card.") \ |
| 160 \ | |
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161 develop(intx, G1RSetRegionEntriesBase, 256, \ |
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162 "Max number of regions in a fine-grain table per MB.") \ |
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163 \ |
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164 product(intx, G1RSetRegionEntries, 0, \ |
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165 "Max number of regions for which we keep bitmaps." \ |
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166 "Will be set ergonomically by default") \ |
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167 \ |
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168 develop(intx, G1RSetSparseRegionEntriesBase, 4, \ |
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169 "Max number of entries per region in a sparse table " \ |
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170 "per MB.") \ |
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171 \ |
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172 product(intx, G1RSetSparseRegionEntries, 0, \ |
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173 "Max number of entries per region in a sparse table." \ |
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174 "Will be set ergonomically by default.") \ |
| 342 | 175 \ |
| 176 develop(bool, G1RecordHRRSOops, false, \ | |
| 177 "When true, record recent calls to rem set operations.") \ | |
| 178 \ | |
| 179 develop(bool, G1RecordHRRSEvents, false, \ | |
| 180 "When true, record recent calls to rem set operations.") \ | |
| 181 \ | |
| 182 develop(intx, G1MaxVerifyFailures, -1, \ | |
| 183 "The maximum number of verification failrues to print. " \ | |
| 184 "-1 means print all.") \ | |
| 185 \ | |
| 186 develop(bool, G1ScrubRemSets, true, \ | |
| 187 "When true, do RS scrubbing after cleanup.") \ | |
| 188 \ | |
| 189 develop(bool, G1RSScrubVerbose, false, \ | |
| 190 "When true, do RS scrubbing with verbose output.") \ | |
| 191 \ | |
| 192 develop(bool, G1YoungSurvRateVerbose, false, \ | |
| 193 "print out the survival rate of young regions according to age.") \ | |
| 194 \ | |
| 195 develop(intx, G1YoungSurvRateNumRegionsSummary, 0, \ | |
| 196 "the number of regions for which we'll print a surv rate " \ | |
| 197 "summary.") \ | |
| 198 \ | |
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199 product(uintx, G1ReservePercent, 10, \ |
| 342 | 200 "It determines the minimum reserve we should have in the heap " \ |
| 201 "to minimize the probability of promotion failure.") \ | |
| 202 \ | |
| 1282 | 203 diagnostic(bool, G1PrintHeapRegions, false, \ |
| 342 | 204 "If set G1 will print information on which regions are being " \ |
| 205 "allocated and which are reclaimed.") \ | |
| 206 \ | |
| 207 develop(bool, G1HRRSUseSparseTable, true, \ | |
| 208 "When true, use sparse table to save space.") \ | |
| 209 \ | |
| 210 develop(bool, G1HRRSFlushLogBuffersOnVerify, false, \ | |
| 211 "Forces flushing of log buffers before verification.") \ | |
| 212 \ | |
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213 develop(bool, G1FailOnFPError, false, \ |
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214 "When set, G1 will fail when it encounters an FP 'error', " \ |
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215 "so as to allow debugging") \ |
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216 \ |
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217 product(uintx, G1HeapRegionSize, 0, \ |
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218 "Size of the G1 regions.") \ |
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219 \ |
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220 experimental(bool, G1UseParallelRSetUpdating, true, \ |
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221 "Enables the parallelization of remembered set updating " \ |
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222 "during evacuation pauses") \ |
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223 \ |
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224 experimental(bool, G1UseParallelRSetScanning, true, \ |
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225 "Enables the parallelization of remembered set scanning " \ |
| 794 | 226 "during evacuation pauses") \ |
| 227 \ | |
| 1282 | 228 product(uintx, G1ConcRefinementThreads, 0, \ |
| 794 | 229 "If non-0 is the number of parallel rem set update threads, " \ |
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230 "otherwise the value is determined ergonomically.") \ |
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231 \ |
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232 develop(bool, G1VerifyCTCleanup, false, \ |
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233 "Verify card table cleanup.") \ |
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234 \ |
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235 product(uintx, G1RSetScanBlockSize, 64, \ |
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236 "Size of a work unit of cards claimed by a worker thread" \ |
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237 "during RSet scanning.") \ |
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238 \ |
| 2152 | 239 develop(uintx, G1SecondaryFreeListAppendLength, 5, \ |
| 240 "The number of regions we will add to the secondary free list " \ | |
| 241 "at every append operation") \ | |
| 242 \ | |
| 243 develop(bool, G1ConcRegionFreeingVerbose, false, \ | |
| 244 "Enables verboseness during concurrent region freeing") \ | |
| 245 \ | |
| 246 develop(bool, G1StressConcRegionFreeing, false, \ | |
| 247 "It stresses the concurrent region freeing operation") \ | |
| 248 \ | |
| 249 develop(uintx, G1StressConcRegionFreeingDelayMillis, 0, \ | |
| 250 "Artificial delay during concurrent region freeing") \ | |
| 251 \ | |
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252 develop(uintx, G1DummyRegionsPerGC, 0, \ |
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253 "The number of dummy regions G1 will allocate at the end of " \ |
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254 "each evacuation pause in order to artificially fill up the " \ |
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255 "heap and stress the marking implementation.") \ |
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256 \ |
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257 develop(bool, G1ExitOnExpansionFailure, false, \ |
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258 "Raise a fatal VM exit out of memory failure in the event " \ |
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259 " that heap expansion fails due to running out of swap.") \ |
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260 \ |
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261 develop(uintx, G1ConcMarkForceOverflow, 0, \ |
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262 "The number of times we'll force an overflow during " \ |
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263 "concurrent marking") \ |
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264 \ |
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265 experimental(uintx, G1NewSizePercent, 5, \ |
| 7449 | 266 "Percentage (0-100) of the heap size to use as default " \ |
| 267 "minimum young gen size.") \ | |
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268 \ |
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269 experimental(uintx, G1MaxNewSizePercent, 60, \ |
| 7449 | 270 "Percentage (0-100) of the heap size to use as default " \ |
| 271 " maximum young gen size.") \ | |
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272 \ |
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273 experimental(uintx, G1MixedGCLiveThresholdPercent, 65, \ |
| 7449 | 274 "Threshold for regions to be considered for inclusion in the " \ |
| 275 "collection set of mixed GCs. " \ | |
| 276 "Regions with live bytes exceeding this will not be collected.") \ | |
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277 \ |
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278 product(uintx, G1HeapWastePercent, 10, \ |
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279 "Amount of space, expressed as a percentage of the heap size, " \ |
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280 "that G1 is willing not to collect to avoid expensive GCs.") \ |
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281 \ |
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282 product(uintx, G1MixedGCCountTarget, 8, \ |
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283 "The target number of mixed GCs after a marking cycle.") \ |
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284 \ |
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285 experimental(uintx, G1OldCSetRegionThresholdPercent, 10, \ |
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286 "An upper bound for the number of old CSet regions expressed " \ |
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287 "as a percentage of the heap size.") \ |
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288 \ |
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289 experimental(ccstr, G1LogLevel, NULL, \ |
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290 "Log level for G1 logging: fine, finer, finest") \ |
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291 \ |
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292 notproduct(bool, G1EvacuationFailureALot, false, \ |
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293 "Force use of evacuation failure handling during certain " \ |
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294 "evacuation pauses") \ |
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295 \ |
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296 develop(uintx, G1EvacuationFailureALotCount, 1000, \ |
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297 "Number of successful evacuations between evacuation failures " \ |
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298 "occurring at object copying") \ |
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299 \ |
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300 develop(uintx, G1EvacuationFailureALotInterval, 5, \ |
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301 "Total collections between forced triggering of evacuation " \ |
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302 "failures") \ |
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303 \ |
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304 develop(bool, G1EvacuationFailureALotDuringConcMark, true, \ |
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305 "Force use of evacuation failure handling during evacuation " \ |
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306 "pauses when marking is in progress") \ |
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307 \ |
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308 develop(bool, G1EvacuationFailureALotDuringInitialMark, true, \ |
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309 "Force use of evacuation failure handling during initial mark " \ |
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310 "evacuation pauses") \ |
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311 \ |
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312 develop(bool, G1EvacuationFailureALotDuringYoungGC, true, \ |
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313 "Force use of evacuation failure handling during young " \ |
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314 "evacuation pauses") \ |
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315 \ |
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316 develop(bool, G1EvacuationFailureALotDuringMixedGC, true, \ |
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317 "Force use of evacuation failure handling during mixed " \ |
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318 "evacuation pauses") \ |
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319 \ |
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320 diagnostic(bool, G1VerifyRSetsDuringFullGC, false, \ |
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321 "If true, perform verification of each heap region's " \ |
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322 "remembered set when verifying the heap during a full GC.") |
| 342 | 323 |
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350
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324 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 | 325 |
| 326 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1_GLOBALS_HPP |