Mercurial > hg > graal-jvmci-8
view src/share/vm/gc_implementation/g1/g1_globals.hpp @ 807:d44bdab1c03d
6843694: G1: assert(index < _vs.committed_size(),"bad index"), g1BlockOffsetTable.inline.hpp:55
Summary: For heaps larger than 32Gb, the number of heap regions overflows the data type used to hold the region index in the SparsePRT structure. Changed the region indexes, card indexes, and RSet hash table buckets to ints and added some size overflow guarantees.
Reviewed-by: ysr, tonyp
| author | johnc |
|---|---|
| date | Thu, 11 Jun 2009 17:19:33 -0700 |
| parents | 315a5d70b295 |
| children | df6caf649ff7 |
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/* * Copyright 2001-2009 Sun Microsystems, Inc. All Rights Reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ // // Defines all globals flags used by the garbage-first compiler. // #define G1_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw) \ \ product(intx, G1ParallelGCAllocBufferSize, 8*K, \ "Size of parallel G1 allocation buffers in to-space.") \ \ product(intx, G1ConfidencePercent, 50, \ "Confidence level for MMU/pause predictions") \ \ develop(intx, G1MarkingOverheadPercent, 0, \ "Overhead of concurrent marking") \ \ develop(bool, G1AccountConcurrentOverhead, false, \ "Whether soft real-time compliance in G1 will take into account" \ "concurrent overhead") \ \ product(intx, G1YoungGenSize, 0, \ "Size of the G1 young generation, 0 is the adaptive policy") \ \ develop(bool, G1Gen, true, \ "If true, it will enable the generational G1") \ \ develop(intx, G1GCPercent, 10, \ "The desired percent time spent on GC") \ \ develop(intx, G1PolicyVerbose, 0, \ "The verbosity level on G1 policy decisions") \ \ develop(bool, G1UseHRIntoRS, true, \ "Determines whether the 'advanced' HR Into rem set is used.") \ \ develop(intx, G1MarkingVerboseLevel, 0, \ "Level (0-4) of verboseness of the marking code") \ \ develop(bool, G1VerifyConcMarkPrintReachable, false, \ "If conc mark verification fails, print reachable objects") \ \ develop(bool, G1TraceMarkStackOverflow, false, \ "If true, extra debugging code for CM restart for ovflw.") \ \ develop(intx, G1PausesBtwnConcMark, -1, \ "If positive, fixed number of pauses between conc markings") \ \ diagnostic(bool, G1SummarizeConcurrentMark, false, \ "Summarize concurrent mark info") \ \ diagnostic(bool, G1SummarizeRSetStats, false, \ "Summarize remembered set processing info") \ \ diagnostic(bool, G1SummarizeZFStats, false, \ "Summarize zero-filling info") \ \ develop(bool, G1TraceConcurrentRefinement, false, \ "Trace G1 concurrent refinement") \ \ develop(bool, G1ConcMark, true, \ "If true, run concurrent marking for G1") \ \ product(intx, G1MarkStackSize, 2 * 1024 * 1024, \ "Size of the mark stack for concurrent marking.") \ \ product(intx, G1MarkRegionStackSize, 1024 * 1024, \ "Size of the region stack for concurrent marking.") \ \ develop(bool, G1ConcRefine, true, \ "If true, run concurrent rem set refinement for G1") \ \ develop(intx, G1ConcRefineTargTraversals, 4, \ "Number of concurrent refinement we try to achieve") \ \ develop(intx, G1ConcRefineInitialDelta, 4, \ "Number of heap regions of alloc ahead of starting collection " \ "pause to start concurrent refinement (initially)") \ \ develop(bool, G1SmoothConcRefine, true, \ "Attempts to smooth out the overhead of concurrent refinement") \ \ develop(bool, G1ConcZeroFill, true, \ "If true, run concurrent zero-filling thread") \ \ develop(intx, G1ConcZFMaxRegions, 1, \ "Stop zero-filling when # of zf'd regions reaches") \ \ product(intx, G1SteadyStateUsed, 90, \ "If non-0, try to maintain 'used' at this pct (of max)") \ \ product(intx, G1SteadyStateUsedDelta, 30, \ "If G1SteadyStateUsed is non-0, then do pause this number of " \ "of percentage points earlier if no marking is in progress.") \ \ develop(bool, G1SATBBarrierPrintNullPreVals, false, \ "If true, count frac of ptr writes with null pre-vals.") \ \ product(intx, G1SATBLogBufferSize, 1*K, \ "Number of entries in an SATB log buffer.") \ \ product(intx, G1SATBProcessCompletedThreshold, 20, \ "Number of completed buffers that triggers log processing.") \ \ develop(intx, G1ExtraRegionSurvRate, 33, \ "If the young survival rate is S, and there's room left in " \ "to-space, we will allow regions whose survival rate is up to " \ "S + (1 - S)*X, where X is this parameter (as a fraction.)") \ \ develop(intx, G1InitYoungSurvRatio, 50, \ "Expected Survival Rate for newly allocated bytes") \ \ develop(bool, G1SATBPrintStubs, false, \ "If true, print generated stubs for the SATB barrier") \ \ product(intx, G1ExpandByPercentOfAvailable, 20, \ "When expanding, % of uncommitted space to claim.") \ \ develop(bool, G1RSBarrierRegionFilter, true, \ "If true, generate region filtering code in RS barrier") \ \ develop(bool, G1RSBarrierNullFilter, true, \ "If true, generate null-pointer filtering code in RS barrier") \ \ develop(bool, G1PrintCTFilterStats, false, \ "If true, print stats on RS filtering effectiveness") \ \ develop(bool, G1DeferredRSUpdate, true, \ "If true, use deferred RS updates") \ \ develop(bool, G1RSLogCheckCardTable, false, \ "If true, verify that no dirty cards remain after RS log " \ "processing.") \ \ develop(bool, G1RSCountHisto, false, \ "If true, print a histogram of RS occupancies after each pause") \ \ develop(intx, G1PrintRegionLivenessInfo, 0, \ "When > 0, print the occupancies of the <n> best and worst" \ "regions.") \ \ develop(bool, G1PrintParCleanupStats, false, \ "When true, print extra stats about parallel cleanup.") \ \ develop(bool, G1DisablePreBarrier, false, \ "Disable generation of pre-barrier (i.e., marking barrier) ") \ \ develop(bool, G1DisablePostBarrier, false, \ "Disable generation of post-barrier (i.e., RS barrier) ") \ \ product(intx, G1DirtyCardQueueMax, 30, \ "Maximum number of completed RS buffers before mutator threads " \ "start processing them.") \ \ develop(intx, G1ConcRSLogCacheSize, 10, \ "Log base 2 of the length of conc RS hot-card cache.") \ \ develop(bool, G1ConcRSCountTraversals, false, \ "If true, gather data about the number of times CR traverses " \ "cards ") \ \ develop(intx, G1ConcRSHotCardLimit, 4, \ "The threshold that defines (>=) a hot card.") \ \ develop(bool, G1PrintOopAppls, false, \ "When true, print applications of closures to external locs.") \ \ develop(intx, G1LogRSRegionEntries, 7, \ "Log_2 of max number of regions for which we keep bitmaps.") \ \ develop(bool, G1RecordHRRSOops, false, \ "When true, record recent calls to rem set operations.") \ \ develop(bool, G1RecordHRRSEvents, false, \ "When true, record recent calls to rem set operations.") \ \ develop(intx, G1MaxVerifyFailures, -1, \ "The maximum number of verification failrues to print. " \ "-1 means print all.") \ \ develop(bool, G1ScrubRemSets, true, \ "When true, do RS scrubbing after cleanup.") \ \ develop(bool, G1RSScrubVerbose, false, \ "When true, do RS scrubbing with verbose output.") \ \ develop(bool, G1YoungSurvRateVerbose, false, \ "print out the survival rate of young regions according to age.") \ \ develop(intx, G1YoungSurvRateNumRegionsSummary, 0, \ "the number of regions for which we'll print a surv rate " \ "summary.") \ \ product(bool, G1UseScanOnlyPrefix, false, \ "It determines whether the system will calculate an optimum " \ "scan-only set.") \ \ product(intx, G1MinReservePercent, 10, \ "It determines the minimum reserve we should have in the heap " \ "to minimize the probability of promotion failure.") \ \ diagnostic(bool, G1PrintRegions, false, \ "If set G1 will print information on which regions are being " \ "allocated and which are reclaimed.") \ \ develop(bool, G1HRRSUseSparseTable, true, \ "When true, use sparse table to save space.") \ \ develop(bool, G1HRRSFlushLogBuffersOnVerify, false, \ "Forces flushing of log buffers before verification.") \ \ product(bool, G1UseSurvivorSpaces, true, \ "When true, use survivor space.") \ \ develop(bool, G1FixedTenuringThreshold, false, \ "When set, G1 will not adjust the tenuring threshold") \ \ develop(bool, G1FixedEdenSize, false, \ "When set, G1 will not allocate unused survivor space regions") \ \ develop(uintx, G1FixedSurvivorSpaceSize, 0, \ "If non-0 is the size of the G1 survivor space, " \ "otherwise SurvivorRatio is used to determine the size") \ \ experimental(bool, G1ParallelRSetUpdatingEnabled, false, \ "Enables the parallelization of remembered set updating " \ "during evacuation pauses") \ \ experimental(bool, G1ParallelRSetScanningEnabled, false, \ "Enables the parallelization of remembered set scanning " \ "during evacuation pauses") \ \ product(uintx, G1ParallelRSetThreads, 0, \ "If non-0 is the number of parallel rem set update threads, " \ "otherwise the value is determined ergonomically.") 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)