Mercurial > hg > openjdk > hsx14
view src/share/vm/gc_implementation/g1/g1_globals.hpp @ 550:ac375e93531e
6490395: G1: Tidy up command line arguments.
Reviewed-by: tonyp, iveresov
| author | johnc |
|---|---|
| date | Wed, 29 Apr 2009 18:44:57 -0700 |
| parents | 3a18c3dc7d98 |
| children |
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/* * Copyright 2001-2007 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, G1RSBarrierUseQueue, true, \ "If true, use queueing RS barrier") \ \ 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") 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)