Mon, 11 May 2009 16:30:56 -0700
6484957: G1: parallel concurrent refinement
6826318: G1: remove traversal-based refinement code
Summary: Removed traversal-based refinement code as it's no longer used. Made the concurrent refinement (queue-based) parallel.
Reviewed-by: tonyp
ysr@777 | 1 | /* |
xdono@1014 | 2 | * Copyright 2001-2009 Sun Microsystems, Inc. All Rights Reserved. |
ysr@777 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
ysr@777 | 4 | * |
ysr@777 | 5 | * This code is free software; you can redistribute it and/or modify it |
ysr@777 | 6 | * under the terms of the GNU General Public License version 2 only, as |
ysr@777 | 7 | * published by the Free Software Foundation. |
ysr@777 | 8 | * |
ysr@777 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
ysr@777 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
ysr@777 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
ysr@777 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
ysr@777 | 13 | * accompanied this code). |
ysr@777 | 14 | * |
ysr@777 | 15 | * You should have received a copy of the GNU General Public License version |
ysr@777 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
ysr@777 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
ysr@777 | 18 | * |
ysr@777 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
ysr@777 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
ysr@777 | 21 | * have any questions. |
ysr@777 | 22 | * |
ysr@777 | 23 | */ |
ysr@777 | 24 | |
ysr@777 | 25 | // |
ysr@777 | 26 | // Defines all globals flags used by the garbage-first compiler. |
ysr@777 | 27 | // |
ysr@777 | 28 | |
ysr@785 | 29 | #define G1_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw) \ |
ysr@777 | 30 | \ |
johnc@1186 | 31 | product(intx, G1ParallelGCAllocBufferSize, 8*K, \ |
ysr@777 | 32 | "Size of parallel G1 allocation buffers in to-space.") \ |
ysr@777 | 33 | \ |
johnc@1186 | 34 | product(intx, G1ConfidencePercent, 50, \ |
ysr@777 | 35 | "Confidence level for MMU/pause predictions") \ |
ysr@777 | 36 | \ |
johnc@1186 | 37 | develop(intx, G1MarkingOverheadPercent, 0, \ |
ysr@777 | 38 | "Overhead of concurrent marking") \ |
ysr@777 | 39 | \ |
johnc@1186 | 40 | develop(bool, G1AccountConcurrentOverhead, false, \ |
ysr@777 | 41 | "Whether soft real-time compliance in G1 will take into account" \ |
ysr@777 | 42 | "concurrent overhead") \ |
ysr@777 | 43 | \ |
ysr@777 | 44 | product(intx, G1YoungGenSize, 0, \ |
ysr@777 | 45 | "Size of the G1 young generation, 0 is the adaptive policy") \ |
ysr@777 | 46 | \ |
johnc@1186 | 47 | develop(bool, G1Gen, true, \ |
ysr@777 | 48 | "If true, it will enable the generational G1") \ |
ysr@777 | 49 | \ |
johnc@1186 | 50 | develop(intx, G1GCPercent, 10, \ |
ysr@777 | 51 | "The desired percent time spent on GC") \ |
ysr@777 | 52 | \ |
johnc@1186 | 53 | develop(intx, G1PolicyVerbose, 0, \ |
ysr@777 | 54 | "The verbosity level on G1 policy decisions") \ |
ysr@777 | 55 | \ |
ysr@777 | 56 | develop(bool, G1UseHRIntoRS, true, \ |
ysr@777 | 57 | "Determines whether the 'advanced' HR Into rem set is used.") \ |
ysr@777 | 58 | \ |
ysr@777 | 59 | develop(intx, G1MarkingVerboseLevel, 0, \ |
ysr@777 | 60 | "Level (0-4) of verboseness of the marking code") \ |
ysr@777 | 61 | \ |
tonyp@1180 | 62 | develop(bool, G1VerifyConcMarkPrintReachable, false, \ |
ysr@777 | 63 | "If conc mark verification fails, print reachable objects") \ |
ysr@777 | 64 | \ |
ysr@777 | 65 | develop(bool, G1TraceMarkStackOverflow, false, \ |
ysr@777 | 66 | "If true, extra debugging code for CM restart for ovflw.") \ |
ysr@777 | 67 | \ |
ysr@777 | 68 | develop(intx, G1PausesBtwnConcMark, -1, \ |
ysr@777 | 69 | "If positive, fixed number of pauses between conc markings") \ |
ysr@777 | 70 | \ |
johnc@1186 | 71 | diagnostic(bool, G1SummarizeConcurrentMark, false, \ |
ysr@777 | 72 | "Summarize concurrent mark info") \ |
ysr@777 | 73 | \ |
johnc@1186 | 74 | diagnostic(bool, G1SummarizeRSetStats, false, \ |
ysr@777 | 75 | "Summarize remembered set processing info") \ |
ysr@777 | 76 | \ |
johnc@1186 | 77 | diagnostic(bool, G1SummarizeZFStats, false, \ |
ysr@777 | 78 | "Summarize zero-filling info") \ |
ysr@777 | 79 | \ |
johnc@1186 | 80 | develop(bool, G1TraceConcurrentRefinement, false, \ |
ysr@777 | 81 | "Trace G1 concurrent refinement") \ |
ysr@777 | 82 | \ |
ysr@777 | 83 | develop(bool, G1ConcMark, true, \ |
ysr@777 | 84 | "If true, run concurrent marking for G1") \ |
ysr@777 | 85 | \ |
johnc@1186 | 86 | product(intx, G1MarkStackSize, 2 * 1024 * 1024, \ |
ysr@777 | 87 | "Size of the mark stack for concurrent marking.") \ |
ysr@777 | 88 | \ |
johnc@1186 | 89 | product(intx, G1MarkRegionStackSize, 1024 * 1024, \ |
ysr@777 | 90 | "Size of the region stack for concurrent marking.") \ |
ysr@777 | 91 | \ |
ysr@777 | 92 | develop(bool, G1ConcRefine, true, \ |
ysr@777 | 93 | "If true, run concurrent rem set refinement for G1") \ |
ysr@777 | 94 | \ |
ysr@777 | 95 | develop(intx, G1ConcRefineTargTraversals, 4, \ |
ysr@777 | 96 | "Number of concurrent refinement we try to achieve") \ |
ysr@777 | 97 | \ |
ysr@777 | 98 | develop(intx, G1ConcRefineInitialDelta, 4, \ |
ysr@777 | 99 | "Number of heap regions of alloc ahead of starting collection " \ |
ysr@777 | 100 | "pause to start concurrent refinement (initially)") \ |
ysr@777 | 101 | \ |
johnc@1186 | 102 | develop(bool, G1SmoothConcRefine, true, \ |
ysr@777 | 103 | "Attempts to smooth out the overhead of concurrent refinement") \ |
ysr@777 | 104 | \ |
ysr@777 | 105 | develop(bool, G1ConcZeroFill, true, \ |
ysr@777 | 106 | "If true, run concurrent zero-filling thread") \ |
ysr@777 | 107 | \ |
ysr@777 | 108 | develop(intx, G1ConcZFMaxRegions, 1, \ |
ysr@777 | 109 | "Stop zero-filling when # of zf'd regions reaches") \ |
ysr@777 | 110 | \ |
ysr@777 | 111 | product(intx, G1SteadyStateUsed, 90, \ |
ysr@777 | 112 | "If non-0, try to maintain 'used' at this pct (of max)") \ |
ysr@777 | 113 | \ |
ysr@777 | 114 | product(intx, G1SteadyStateUsedDelta, 30, \ |
ysr@777 | 115 | "If G1SteadyStateUsed is non-0, then do pause this number of " \ |
ysr@777 | 116 | "of percentage points earlier if no marking is in progress.") \ |
ysr@777 | 117 | \ |
ysr@777 | 118 | develop(bool, G1SATBBarrierPrintNullPreVals, false, \ |
ysr@777 | 119 | "If true, count frac of ptr writes with null pre-vals.") \ |
ysr@777 | 120 | \ |
ysr@777 | 121 | product(intx, G1SATBLogBufferSize, 1*K, \ |
ysr@777 | 122 | "Number of entries in an SATB log buffer.") \ |
ysr@777 | 123 | \ |
ysr@777 | 124 | product(intx, G1SATBProcessCompletedThreshold, 20, \ |
ysr@777 | 125 | "Number of completed buffers that triggers log processing.") \ |
ysr@777 | 126 | \ |
ysr@777 | 127 | develop(intx, G1ExtraRegionSurvRate, 33, \ |
ysr@777 | 128 | "If the young survival rate is S, and there's room left in " \ |
ysr@777 | 129 | "to-space, we will allow regions whose survival rate is up to " \ |
ysr@777 | 130 | "S + (1 - S)*X, where X is this parameter (as a fraction.)") \ |
ysr@777 | 131 | \ |
ysr@777 | 132 | develop(intx, G1InitYoungSurvRatio, 50, \ |
ysr@777 | 133 | "Expected Survival Rate for newly allocated bytes") \ |
ysr@777 | 134 | \ |
ysr@777 | 135 | develop(bool, G1SATBPrintStubs, false, \ |
ysr@777 | 136 | "If true, print generated stubs for the SATB barrier") \ |
ysr@777 | 137 | \ |
johnc@1186 | 138 | product(intx, G1ExpandByPercentOfAvailable, 20, \ |
ysr@777 | 139 | "When expanding, % of uncommitted space to claim.") \ |
ysr@777 | 140 | \ |
ysr@777 | 141 | develop(bool, G1RSBarrierRegionFilter, true, \ |
ysr@777 | 142 | "If true, generate region filtering code in RS barrier") \ |
ysr@777 | 143 | \ |
ysr@777 | 144 | develop(bool, G1RSBarrierNullFilter, true, \ |
ysr@777 | 145 | "If true, generate null-pointer filtering code in RS barrier") \ |
ysr@777 | 146 | \ |
ysr@777 | 147 | develop(bool, G1PrintCTFilterStats, false, \ |
ysr@777 | 148 | "If true, print stats on RS filtering effectiveness") \ |
ysr@777 | 149 | \ |
iveresov@1051 | 150 | develop(bool, G1DeferredRSUpdate, true, \ |
iveresov@1051 | 151 | "If true, use deferred RS updates") \ |
iveresov@1051 | 152 | \ |
ysr@777 | 153 | develop(bool, G1RSLogCheckCardTable, false, \ |
ysr@777 | 154 | "If true, verify that no dirty cards remain after RS log " \ |
ysr@777 | 155 | "processing.") \ |
ysr@777 | 156 | \ |
ysr@777 | 157 | develop(bool, G1RSCountHisto, false, \ |
ysr@777 | 158 | "If true, print a histogram of RS occupancies after each pause") \ |
ysr@777 | 159 | \ |
ysr@777 | 160 | develop(intx, G1PrintRegionLivenessInfo, 0, \ |
ysr@777 | 161 | "When > 0, print the occupancies of the <n> best and worst" \ |
ysr@777 | 162 | "regions.") \ |
ysr@777 | 163 | \ |
ysr@777 | 164 | develop(bool, G1PrintParCleanupStats, false, \ |
ysr@777 | 165 | "When true, print extra stats about parallel cleanup.") \ |
ysr@777 | 166 | \ |
ysr@777 | 167 | develop(bool, G1DisablePreBarrier, false, \ |
ysr@777 | 168 | "Disable generation of pre-barrier (i.e., marking barrier) ") \ |
ysr@777 | 169 | \ |
ysr@777 | 170 | develop(bool, G1DisablePostBarrier, false, \ |
ysr@777 | 171 | "Disable generation of post-barrier (i.e., RS barrier) ") \ |
ysr@777 | 172 | \ |
ysr@777 | 173 | product(intx, G1DirtyCardQueueMax, 30, \ |
ysr@777 | 174 | "Maximum number of completed RS buffers before mutator threads " \ |
ysr@777 | 175 | "start processing them.") \ |
ysr@777 | 176 | \ |
ysr@777 | 177 | develop(intx, G1ConcRSLogCacheSize, 10, \ |
ysr@777 | 178 | "Log base 2 of the length of conc RS hot-card cache.") \ |
ysr@777 | 179 | \ |
johnc@1186 | 180 | develop(bool, G1ConcRSCountTraversals, false, \ |
ysr@777 | 181 | "If true, gather data about the number of times CR traverses " \ |
ysr@777 | 182 | "cards ") \ |
ysr@777 | 183 | \ |
johnc@1186 | 184 | develop(intx, G1ConcRSHotCardLimit, 4, \ |
ysr@777 | 185 | "The threshold that defines (>=) a hot card.") \ |
ysr@777 | 186 | \ |
ysr@777 | 187 | develop(bool, G1PrintOopAppls, false, \ |
ysr@777 | 188 | "When true, print applications of closures to external locs.") \ |
ysr@777 | 189 | \ |
johnc@1186 | 190 | develop(intx, G1LogRSRegionEntries, 7, \ |
ysr@777 | 191 | "Log_2 of max number of regions for which we keep bitmaps.") \ |
ysr@777 | 192 | \ |
ysr@777 | 193 | develop(bool, G1RecordHRRSOops, false, \ |
ysr@777 | 194 | "When true, record recent calls to rem set operations.") \ |
ysr@777 | 195 | \ |
ysr@777 | 196 | develop(bool, G1RecordHRRSEvents, false, \ |
ysr@777 | 197 | "When true, record recent calls to rem set operations.") \ |
ysr@777 | 198 | \ |
ysr@777 | 199 | develop(intx, G1MaxVerifyFailures, -1, \ |
ysr@777 | 200 | "The maximum number of verification failrues to print. " \ |
ysr@777 | 201 | "-1 means print all.") \ |
ysr@777 | 202 | \ |
ysr@777 | 203 | develop(bool, G1ScrubRemSets, true, \ |
ysr@777 | 204 | "When true, do RS scrubbing after cleanup.") \ |
ysr@777 | 205 | \ |
ysr@777 | 206 | develop(bool, G1RSScrubVerbose, false, \ |
ysr@777 | 207 | "When true, do RS scrubbing with verbose output.") \ |
ysr@777 | 208 | \ |
ysr@777 | 209 | develop(bool, G1YoungSurvRateVerbose, false, \ |
ysr@777 | 210 | "print out the survival rate of young regions according to age.") \ |
ysr@777 | 211 | \ |
ysr@777 | 212 | develop(intx, G1YoungSurvRateNumRegionsSummary, 0, \ |
ysr@777 | 213 | "the number of regions for which we'll print a surv rate " \ |
ysr@777 | 214 | "summary.") \ |
ysr@777 | 215 | \ |
ysr@777 | 216 | product(bool, G1UseScanOnlyPrefix, false, \ |
ysr@777 | 217 | "It determines whether the system will calculate an optimum " \ |
ysr@777 | 218 | "scan-only set.") \ |
ysr@777 | 219 | \ |
johnc@1186 | 220 | product(intx, G1MinReservePercent, 10, \ |
ysr@777 | 221 | "It determines the minimum reserve we should have in the heap " \ |
ysr@777 | 222 | "to minimize the probability of promotion failure.") \ |
ysr@777 | 223 | \ |
johnc@1186 | 224 | diagnostic(bool, G1PrintRegions, false, \ |
ysr@777 | 225 | "If set G1 will print information on which regions are being " \ |
ysr@777 | 226 | "allocated and which are reclaimed.") \ |
ysr@777 | 227 | \ |
ysr@777 | 228 | develop(bool, G1HRRSUseSparseTable, true, \ |
ysr@777 | 229 | "When true, use sparse table to save space.") \ |
ysr@777 | 230 | \ |
ysr@777 | 231 | develop(bool, G1HRRSFlushLogBuffersOnVerify, false, \ |
ysr@777 | 232 | "Forces flushing of log buffers before verification.") \ |
ysr@777 | 233 | \ |
johnc@1186 | 234 | product(bool, G1UseSurvivorSpaces, true, \ |
apetrusenko@980 | 235 | "When true, use survivor space.") \ |
apetrusenko@980 | 236 | \ |
johnc@1186 | 237 | develop(bool, G1FixedTenuringThreshold, false, \ |
apetrusenko@980 | 238 | "When set, G1 will not adjust the tenuring threshold") \ |
apetrusenko@980 | 239 | \ |
johnc@1186 | 240 | develop(bool, G1FixedEdenSize, false, \ |
apetrusenko@980 | 241 | "When set, G1 will not allocate unused survivor space regions") \ |
apetrusenko@980 | 242 | \ |
johnc@1186 | 243 | develop(uintx, G1FixedSurvivorSpaceSize, 0, \ |
apetrusenko@980 | 244 | "If non-0 is the size of the G1 survivor space, " \ |
tonyp@1073 | 245 | "otherwise SurvivorRatio is used to determine the size") \ |
tonyp@1073 | 246 | \ |
johnc@1186 | 247 | experimental(bool, G1ParallelRSetUpdatingEnabled, false, \ |
tonyp@1073 | 248 | "Enables the parallelization of remembered set updating " \ |
tonyp@1073 | 249 | "during evacuation pauses") \ |
tonyp@1073 | 250 | \ |
johnc@1186 | 251 | experimental(bool, G1ParallelRSetScanningEnabled, false, \ |
tonyp@1073 | 252 | "Enables the parallelization of remembered set scanning " \ |
iveresov@1229 | 253 | "during evacuation pauses") \ |
iveresov@1229 | 254 | \ |
iveresov@1229 | 255 | product(uintx, G1ParallelRSetThreads, 0, \ |
iveresov@1229 | 256 | "If non-0 is the number of parallel rem set update threads, " \ |
iveresov@1229 | 257 | "otherwise the value is determined ergonomically.") |
ysr@777 | 258 | |
ysr@785 | 259 | 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) |