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8c764e214c
6826318: G1: remove traversal-based refinement code Removed traversal-based refinement code as it's no longer used. Made the concurrent refinement (queue-based) parallel. Reviewed-by: tonyp
259 lines
19 KiB
C++
259 lines
19 KiB
C++
/*
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* Copyright 2001-2009 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*
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*/
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//
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// Defines all globals flags used by the garbage-first compiler.
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//
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#define G1_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw) \
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\
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product(intx, G1ParallelGCAllocBufferSize, 8*K, \
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"Size of parallel G1 allocation buffers in to-space.") \
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\
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product(intx, G1ConfidencePercent, 50, \
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"Confidence level for MMU/pause predictions") \
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\
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develop(intx, G1MarkingOverheadPercent, 0, \
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"Overhead of concurrent marking") \
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\
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develop(bool, G1AccountConcurrentOverhead, false, \
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"Whether soft real-time compliance in G1 will take into account" \
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"concurrent overhead") \
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\
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product(intx, G1YoungGenSize, 0, \
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"Size of the G1 young generation, 0 is the adaptive policy") \
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\
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develop(bool, G1Gen, true, \
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"If true, it will enable the generational G1") \
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\
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develop(intx, G1GCPercent, 10, \
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"The desired percent time spent on GC") \
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\
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develop(intx, G1PolicyVerbose, 0, \
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"The verbosity level on G1 policy decisions") \
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\
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develop(bool, G1UseHRIntoRS, true, \
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"Determines whether the 'advanced' HR Into rem set is used.") \
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\
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develop(intx, G1MarkingVerboseLevel, 0, \
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"Level (0-4) of verboseness of the marking code") \
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\
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develop(bool, G1VerifyConcMarkPrintReachable, false, \
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"If conc mark verification fails, print reachable objects") \
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\
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develop(bool, G1TraceMarkStackOverflow, false, \
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"If true, extra debugging code for CM restart for ovflw.") \
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\
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develop(intx, G1PausesBtwnConcMark, -1, \
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"If positive, fixed number of pauses between conc markings") \
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\
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diagnostic(bool, G1SummarizeConcurrentMark, false, \
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"Summarize concurrent mark info") \
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\
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diagnostic(bool, G1SummarizeRSetStats, false, \
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"Summarize remembered set processing info") \
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\
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diagnostic(bool, G1SummarizeZFStats, false, \
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"Summarize zero-filling info") \
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\
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develop(bool, G1TraceConcurrentRefinement, false, \
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"Trace G1 concurrent refinement") \
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\
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develop(bool, G1ConcMark, true, \
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"If true, run concurrent marking for G1") \
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\
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product(intx, G1MarkStackSize, 2 * 1024 * 1024, \
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"Size of the mark stack for concurrent marking.") \
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\
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product(intx, G1MarkRegionStackSize, 1024 * 1024, \
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"Size of the region stack for concurrent marking.") \
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\
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develop(bool, G1ConcRefine, true, \
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"If true, run concurrent rem set refinement for G1") \
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\
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develop(intx, G1ConcRefineTargTraversals, 4, \
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"Number of concurrent refinement we try to achieve") \
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\
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develop(intx, G1ConcRefineInitialDelta, 4, \
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"Number of heap regions of alloc ahead of starting collection " \
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"pause to start concurrent refinement (initially)") \
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\
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develop(bool, G1SmoothConcRefine, true, \
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"Attempts to smooth out the overhead of concurrent refinement") \
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\
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develop(bool, G1ConcZeroFill, true, \
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"If true, run concurrent zero-filling thread") \
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\
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develop(intx, G1ConcZFMaxRegions, 1, \
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"Stop zero-filling when # of zf'd regions reaches") \
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\
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product(intx, G1SteadyStateUsed, 90, \
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"If non-0, try to maintain 'used' at this pct (of max)") \
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\
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product(intx, G1SteadyStateUsedDelta, 30, \
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"If G1SteadyStateUsed is non-0, then do pause this number of " \
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"of percentage points earlier if no marking is in progress.") \
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\
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develop(bool, G1SATBBarrierPrintNullPreVals, false, \
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"If true, count frac of ptr writes with null pre-vals.") \
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\
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product(intx, G1SATBLogBufferSize, 1*K, \
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"Number of entries in an SATB log buffer.") \
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\
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product(intx, G1SATBProcessCompletedThreshold, 20, \
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"Number of completed buffers that triggers log processing.") \
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\
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develop(intx, G1ExtraRegionSurvRate, 33, \
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"If the young survival rate is S, and there's room left in " \
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"to-space, we will allow regions whose survival rate is up to " \
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"S + (1 - S)*X, where X is this parameter (as a fraction.)") \
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\
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develop(intx, G1InitYoungSurvRatio, 50, \
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"Expected Survival Rate for newly allocated bytes") \
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\
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develop(bool, G1SATBPrintStubs, false, \
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"If true, print generated stubs for the SATB barrier") \
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\
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product(intx, G1ExpandByPercentOfAvailable, 20, \
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"When expanding, % of uncommitted space to claim.") \
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\
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develop(bool, G1RSBarrierRegionFilter, true, \
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"If true, generate region filtering code in RS barrier") \
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\
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develop(bool, G1RSBarrierNullFilter, true, \
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"If true, generate null-pointer filtering code in RS barrier") \
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\
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develop(bool, G1PrintCTFilterStats, false, \
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"If true, print stats on RS filtering effectiveness") \
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\
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develop(bool, G1DeferredRSUpdate, true, \
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"If true, use deferred RS updates") \
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\
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develop(bool, G1RSLogCheckCardTable, false, \
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"If true, verify that no dirty cards remain after RS log " \
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"processing.") \
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\
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develop(bool, G1RSCountHisto, false, \
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"If true, print a histogram of RS occupancies after each pause") \
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\
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develop(intx, G1PrintRegionLivenessInfo, 0, \
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"When > 0, print the occupancies of the <n> best and worst" \
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"regions.") \
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\
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develop(bool, G1PrintParCleanupStats, false, \
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"When true, print extra stats about parallel cleanup.") \
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\
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develop(bool, G1DisablePreBarrier, false, \
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"Disable generation of pre-barrier (i.e., marking barrier) ") \
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\
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develop(bool, G1DisablePostBarrier, false, \
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"Disable generation of post-barrier (i.e., RS barrier) ") \
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\
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product(intx, G1DirtyCardQueueMax, 30, \
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"Maximum number of completed RS buffers before mutator threads " \
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"start processing them.") \
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\
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develop(intx, G1ConcRSLogCacheSize, 10, \
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"Log base 2 of the length of conc RS hot-card cache.") \
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\
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develop(bool, G1ConcRSCountTraversals, false, \
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"If true, gather data about the number of times CR traverses " \
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"cards ") \
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\
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develop(intx, G1ConcRSHotCardLimit, 4, \
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"The threshold that defines (>=) a hot card.") \
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\
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develop(bool, G1PrintOopAppls, false, \
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"When true, print applications of closures to external locs.") \
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\
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develop(intx, G1LogRSRegionEntries, 7, \
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"Log_2 of max number of regions for which we keep bitmaps.") \
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\
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develop(bool, G1RecordHRRSOops, false, \
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"When true, record recent calls to rem set operations.") \
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\
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develop(bool, G1RecordHRRSEvents, false, \
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"When true, record recent calls to rem set operations.") \
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\
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develop(intx, G1MaxVerifyFailures, -1, \
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"The maximum number of verification failrues to print. " \
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"-1 means print all.") \
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\
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develop(bool, G1ScrubRemSets, true, \
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"When true, do RS scrubbing after cleanup.") \
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\
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develop(bool, G1RSScrubVerbose, false, \
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"When true, do RS scrubbing with verbose output.") \
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\
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develop(bool, G1YoungSurvRateVerbose, false, \
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"print out the survival rate of young regions according to age.") \
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\
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develop(intx, G1YoungSurvRateNumRegionsSummary, 0, \
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"the number of regions for which we'll print a surv rate " \
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"summary.") \
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\
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product(bool, G1UseScanOnlyPrefix, false, \
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"It determines whether the system will calculate an optimum " \
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"scan-only set.") \
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\
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product(intx, G1MinReservePercent, 10, \
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"It determines the minimum reserve we should have in the heap " \
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"to minimize the probability of promotion failure.") \
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\
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diagnostic(bool, G1PrintRegions, false, \
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"If set G1 will print information on which regions are being " \
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"allocated and which are reclaimed.") \
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\
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develop(bool, G1HRRSUseSparseTable, true, \
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"When true, use sparse table to save space.") \
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\
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develop(bool, G1HRRSFlushLogBuffersOnVerify, false, \
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"Forces flushing of log buffers before verification.") \
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\
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product(bool, G1UseSurvivorSpaces, true, \
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"When true, use survivor space.") \
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\
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develop(bool, G1FixedTenuringThreshold, false, \
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"When set, G1 will not adjust the tenuring threshold") \
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\
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develop(bool, G1FixedEdenSize, false, \
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"When set, G1 will not allocate unused survivor space regions") \
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\
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develop(uintx, G1FixedSurvivorSpaceSize, 0, \
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"If non-0 is the size of the G1 survivor space, " \
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"otherwise SurvivorRatio is used to determine the size") \
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\
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experimental(bool, G1ParallelRSetUpdatingEnabled, false, \
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"Enables the parallelization of remembered set updating " \
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"during evacuation pauses") \
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\
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experimental(bool, G1ParallelRSetScanningEnabled, false, \
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"Enables the parallelization of remembered set scanning " \
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"during evacuation pauses") \
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\
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product(uintx, G1ParallelRSetThreads, 0, \
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"If non-0 is the number of parallel rem set update threads, " \
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"otherwise the value is determined ergonomically.")
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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)
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