--- old/src/share/vm/gc_implementation/g1/g1_globals.hpp 2015-05-13 13:56:20.846872854 +0200 +++ /dev/null 2015-03-18 17:10:38.111854831 +0100 @@ -1,319 +0,0 @@ -/* - * Copyright (c) 2001, 2015, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA - * or visit www.oracle.com if you need additional information or have any - * questions. - * - */ - -#ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1_GLOBALS_HPP -#define SHARE_VM_GC_IMPLEMENTATION_G1_G1_GLOBALS_HPP - -#include "runtime/globals.hpp" -// -// 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(uintx, G1ConfidencePercent, 50, \ - "Confidence level for MMU/pause predictions") \ - \ - develop(intx, G1MarkingOverheadPercent, 0, \ - "Overhead of concurrent marking") \ - \ - develop(intx, G1MarkingVerboseLevel, 0, \ - "Level (0-4) of verboseness of the marking code") \ - \ - develop(bool, G1TraceMarkStackOverflow, false, \ - "If true, extra debugging code for CM restart for ovflw.") \ - \ - develop(bool, G1TraceHeapRegionRememberedSet, false, \ - "Enables heap region remembered set debug logs") \ - \ - diagnostic(bool, G1SummarizeConcMark, false, \ - "Summarize concurrent mark info") \ - \ - diagnostic(bool, G1SummarizeRSetStats, false, \ - "Summarize remembered set processing info") \ - \ - diagnostic(intx, G1SummarizeRSetStatsPeriod, 0, \ - "The period (in number of GCs) at which we will generate " \ - "update buffer processing info " \ - "(0 means do not periodically generate this info); " \ - "it also requires -XX:+G1SummarizeRSetStats") \ - \ - diagnostic(bool, G1TraceConcRefinement, false, \ - "Trace G1 concurrent refinement") \ - \ - experimental(bool, G1TraceStringSymbolTableScrubbing, false, \ - "Trace information string and symbol table scrubbing.") \ - \ - product(double, G1ConcMarkStepDurationMillis, 10.0, \ - "Target duration of individual concurrent marking steps " \ - "in milliseconds.") \ - \ - product(intx, G1RefProcDrainInterval, 10, \ - "The number of discovered reference objects to process before " \ - "draining concurrent marking work queues.") \ - \ - experimental(bool, G1UseConcMarkReferenceProcessing, true, \ - "If true, enable reference discovery during concurrent " \ - "marking and reference processing at the end of remark.") \ - \ - product(size_t, G1SATBBufferSize, 1*K, \ - "Number of entries in an SATB log buffer.") \ - \ - develop(intx, G1SATBProcessCompletedThreshold, 20, \ - "Number of completed buffers that triggers log processing.") \ - \ - product(uintx, G1SATBBufferEnqueueingThresholdPercent, 60, \ - "Before enqueueing them, each mutator thread tries to do some " \ - "filtering on the SATB buffers it generates. If post-filtering " \ - "the percentage of retained entries is over this threshold " \ - "the buffer will be enqueued for processing. A value of 0 " \ - "specifies that mutator threads should not do such filtering.") \ - \ - experimental(intx, G1ExpandByPercentOfAvailable, 20, \ - "When expanding, % of uncommitted space to claim.") \ - \ - develop(bool, G1RSBarrierRegionFilter, true, \ - "If true, generate region filtering code in RS barrier") \ - \ - diagnostic(bool, G1PrintRegionLivenessInfo, false, \ - "Prints the liveness information for all regions in the heap " \ - "at the end of a marking cycle.") \ - \ - product(size_t, G1UpdateBufferSize, 256, \ - "Size of an update buffer") \ - \ - product(intx, G1ConcRefinementYellowZone, 0, \ - "Number of enqueued update buffers that will " \ - "trigger concurrent processing. Will be selected ergonomically " \ - "by default.") \ - \ - product(intx, G1ConcRefinementRedZone, 0, \ - "Maximum number of enqueued update buffers before mutator " \ - "threads start processing new ones instead of enqueueing them. " \ - "Will be selected ergonomically by default. Zero will disable " \ - "concurrent processing.") \ - \ - product(intx, G1ConcRefinementGreenZone, 0, \ - "The number of update buffers that are left in the queue by the " \ - "concurrent processing threads. Will be selected ergonomically " \ - "by default.") \ - \ - product(intx, G1ConcRefinementServiceIntervalMillis, 300, \ - "The last concurrent refinement thread wakes up every " \ - "specified number of milliseconds to do miscellaneous work.") \ - \ - product(intx, G1ConcRefinementThresholdStep, 0, \ - "Each time the rset update queue increases by this amount " \ - "activate the next refinement thread if available. " \ - "Will be selected ergonomically by default.") \ - \ - product(intx, G1RSetUpdatingPauseTimePercent, 10, \ - "A target percentage of time that is allowed to be spend on " \ - "process RS update buffers during the collection pause.") \ - \ - product(bool, G1UseAdaptiveConcRefinement, true, \ - "Select green, yellow and red zones adaptively to meet the " \ - "the pause requirements.") \ - \ - product(size_t, G1ConcRSLogCacheSize, 10, \ - "Log base 2 of the length of conc RS hot-card cache.") \ - \ - product(uintx, G1ConcRSHotCardLimit, 4, \ - "The threshold that defines (>=) a hot card.") \ - \ - develop(intx, G1RSetRegionEntriesBase, 256, \ - "Max number of regions in a fine-grain table per MB.") \ - \ - product(intx, G1RSetRegionEntries, 0, \ - "Max number of regions for which we keep bitmaps." \ - "Will be set ergonomically by default") \ - \ - develop(intx, G1RSetSparseRegionEntriesBase, 4, \ - "Max number of entries per region in a sparse table " \ - "per MB.") \ - \ - product(intx, G1RSetSparseRegionEntries, 0, \ - "Max number of entries per region in a sparse table." \ - "Will be set ergonomically by default.") \ - \ - 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 failures 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(uintx, G1ReservePercent, 10, \ - "It determines the minimum reserve we should have in the heap " \ - "to minimize the probability of promotion failure.") \ - \ - diagnostic(bool, G1PrintHeapRegions, 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.") \ - \ - develop(bool, G1FailOnFPError, false, \ - "When set, G1 will fail when it encounters an FP 'error', " \ - "so as to allow debugging") \ - \ - product(size_t, G1HeapRegionSize, 0, \ - "Size of the G1 regions.") \ - \ - product(uintx, G1ConcRefinementThreads, 0, \ - "If non-0 is the number of parallel rem set update threads, " \ - "otherwise the value is determined ergonomically.") \ - \ - develop(bool, G1VerifyCTCleanup, false, \ - "Verify card table cleanup.") \ - \ - product(size_t, G1RSetScanBlockSize, 64, \ - "Size of a work unit of cards claimed by a worker thread" \ - "during RSet scanning.") \ - \ - develop(uintx, G1SecondaryFreeListAppendLength, 5, \ - "The number of regions we will add to the secondary free list " \ - "at every append operation") \ - \ - develop(bool, G1ConcRegionFreeingVerbose, false, \ - "Enables verboseness during concurrent region freeing") \ - \ - develop(bool, G1StressConcRegionFreeing, false, \ - "It stresses the concurrent region freeing operation") \ - \ - develop(uintx, G1StressConcRegionFreeingDelayMillis, 0, \ - "Artificial delay during concurrent region freeing") \ - \ - develop(uintx, G1DummyRegionsPerGC, 0, \ - "The number of dummy regions G1 will allocate at the end of " \ - "each evacuation pause in order to artificially fill up the " \ - "heap and stress the marking implementation.") \ - \ - develop(bool, G1ExitOnExpansionFailure, false, \ - "Raise a fatal VM exit out of memory failure in the event " \ - " that heap expansion fails due to running out of swap.") \ - \ - develop(uintx, G1ConcMarkForceOverflow, 0, \ - "The number of times we'll force an overflow during " \ - "concurrent marking") \ - \ - experimental(uintx, G1NewSizePercent, 5, \ - "Percentage (0-100) of the heap size to use as default " \ - "minimum young gen size.") \ - \ - experimental(uintx, G1MaxNewSizePercent, 60, \ - "Percentage (0-100) of the heap size to use as default " \ - " maximum young gen size.") \ - \ - experimental(uintx, G1MixedGCLiveThresholdPercent, 85, \ - "Threshold for regions to be considered for inclusion in the " \ - "collection set of mixed GCs. " \ - "Regions with live bytes exceeding this will not be collected.") \ - \ - product(uintx, G1HeapWastePercent, 5, \ - "Amount of space, expressed as a percentage of the heap size, " \ - "that G1 is willing not to collect to avoid expensive GCs.") \ - \ - product(uintx, G1MixedGCCountTarget, 8, \ - "The target number of mixed GCs after a marking cycle.") \ - \ - experimental(bool, G1EagerReclaimHumongousObjects, true, \ - "Try to reclaim dead large objects at every young GC.") \ - \ - experimental(bool, G1EagerReclaimHumongousObjectsWithStaleRefs, true, \ - "Try to reclaim dead large objects that have a few stale " \ - "references at every young GC.") \ - \ - experimental(bool, G1TraceEagerReclaimHumongousObjects, false, \ - "Print some information about large object liveness " \ - "at every young GC.") \ - \ - experimental(uintx, G1OldCSetRegionThresholdPercent, 10, \ - "An upper bound for the number of old CSet regions expressed " \ - "as a percentage of the heap size.") \ - \ - experimental(ccstr, G1LogLevel, NULL, \ - "Log level for G1 logging: fine, finer, finest") \ - \ - notproduct(bool, G1EvacuationFailureALot, false, \ - "Force use of evacuation failure handling during certain " \ - "evacuation pauses") \ - \ - develop(uintx, G1EvacuationFailureALotCount, 1000, \ - "Number of successful evacuations between evacuation failures " \ - "occurring at object copying") \ - \ - develop(uintx, G1EvacuationFailureALotInterval, 5, \ - "Total collections between forced triggering of evacuation " \ - "failures") \ - \ - develop(bool, G1EvacuationFailureALotDuringConcMark, true, \ - "Force use of evacuation failure handling during evacuation " \ - "pauses when marking is in progress") \ - \ - develop(bool, G1EvacuationFailureALotDuringInitialMark, true, \ - "Force use of evacuation failure handling during initial mark " \ - "evacuation pauses") \ - \ - develop(bool, G1EvacuationFailureALotDuringYoungGC, true, \ - "Force use of evacuation failure handling during young " \ - "evacuation pauses") \ - \ - develop(bool, G1EvacuationFailureALotDuringMixedGC, true, \ - "Force use of evacuation failure handling during mixed " \ - "evacuation pauses") \ - \ - diagnostic(bool, G1VerifyRSetsDuringFullGC, false, \ - "If true, perform verification of each heap region's " \ - "remembered set when verifying the heap during a full GC.") \ - \ - diagnostic(bool, G1VerifyHeapRegionCodeRoots, false, \ - "Verify the code root lists attached to each heap region.") \ - \ - develop(bool, G1VerifyBitmaps, false, \ - "Verifies the consistency of the marking bitmaps") - -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) - -#endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1_GLOBALS_HPP --- /dev/null 2015-03-18 17:10:38.111854831 +0100 +++ new/src/share/vm/gc/g1/g1_globals.hpp 2015-05-13 13:56:20.667865426 +0200 @@ -0,0 +1,319 @@ +/* + * Copyright (c) 2001, 2015, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + * + */ + +#ifndef SHARE_VM_GC_G1_G1_GLOBALS_HPP +#define SHARE_VM_GC_G1_G1_GLOBALS_HPP + +#include "runtime/globals.hpp" +// +// 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(uintx, G1ConfidencePercent, 50, \ + "Confidence level for MMU/pause predictions") \ + \ + develop(intx, G1MarkingOverheadPercent, 0, \ + "Overhead of concurrent marking") \ + \ + develop(intx, G1MarkingVerboseLevel, 0, \ + "Level (0-4) of verboseness of the marking code") \ + \ + develop(bool, G1TraceMarkStackOverflow, false, \ + "If true, extra debugging code for CM restart for ovflw.") \ + \ + develop(bool, G1TraceHeapRegionRememberedSet, false, \ + "Enables heap region remembered set debug logs") \ + \ + diagnostic(bool, G1SummarizeConcMark, false, \ + "Summarize concurrent mark info") \ + \ + diagnostic(bool, G1SummarizeRSetStats, false, \ + "Summarize remembered set processing info") \ + \ + diagnostic(intx, G1SummarizeRSetStatsPeriod, 0, \ + "The period (in number of GCs) at which we will generate " \ + "update buffer processing info " \ + "(0 means do not periodically generate this info); " \ + "it also requires -XX:+G1SummarizeRSetStats") \ + \ + diagnostic(bool, G1TraceConcRefinement, false, \ + "Trace G1 concurrent refinement") \ + \ + experimental(bool, G1TraceStringSymbolTableScrubbing, false, \ + "Trace information string and symbol table scrubbing.") \ + \ + product(double, G1ConcMarkStepDurationMillis, 10.0, \ + "Target duration of individual concurrent marking steps " \ + "in milliseconds.") \ + \ + product(intx, G1RefProcDrainInterval, 10, \ + "The number of discovered reference objects to process before " \ + "draining concurrent marking work queues.") \ + \ + experimental(bool, G1UseConcMarkReferenceProcessing, true, \ + "If true, enable reference discovery during concurrent " \ + "marking and reference processing at the end of remark.") \ + \ + product(size_t, G1SATBBufferSize, 1*K, \ + "Number of entries in an SATB log buffer.") \ + \ + develop(intx, G1SATBProcessCompletedThreshold, 20, \ + "Number of completed buffers that triggers log processing.") \ + \ + product(uintx, G1SATBBufferEnqueueingThresholdPercent, 60, \ + "Before enqueueing them, each mutator thread tries to do some " \ + "filtering on the SATB buffers it generates. If post-filtering " \ + "the percentage of retained entries is over this threshold " \ + "the buffer will be enqueued for processing. A value of 0 " \ + "specifies that mutator threads should not do such filtering.") \ + \ + experimental(intx, G1ExpandByPercentOfAvailable, 20, \ + "When expanding, % of uncommitted space to claim.") \ + \ + develop(bool, G1RSBarrierRegionFilter, true, \ + "If true, generate region filtering code in RS barrier") \ + \ + diagnostic(bool, G1PrintRegionLivenessInfo, false, \ + "Prints the liveness information for all regions in the heap " \ + "at the end of a marking cycle.") \ + \ + product(size_t, G1UpdateBufferSize, 256, \ + "Size of an update buffer") \ + \ + product(intx, G1ConcRefinementYellowZone, 0, \ + "Number of enqueued update buffers that will " \ + "trigger concurrent processing. Will be selected ergonomically " \ + "by default.") \ + \ + product(intx, G1ConcRefinementRedZone, 0, \ + "Maximum number of enqueued update buffers before mutator " \ + "threads start processing new ones instead of enqueueing them. " \ + "Will be selected ergonomically by default. Zero will disable " \ + "concurrent processing.") \ + \ + product(intx, G1ConcRefinementGreenZone, 0, \ + "The number of update buffers that are left in the queue by the " \ + "concurrent processing threads. Will be selected ergonomically " \ + "by default.") \ + \ + product(intx, G1ConcRefinementServiceIntervalMillis, 300, \ + "The last concurrent refinement thread wakes up every " \ + "specified number of milliseconds to do miscellaneous work.") \ + \ + product(intx, G1ConcRefinementThresholdStep, 0, \ + "Each time the rset update queue increases by this amount " \ + "activate the next refinement thread if available. " \ + "Will be selected ergonomically by default.") \ + \ + product(intx, G1RSetUpdatingPauseTimePercent, 10, \ + "A target percentage of time that is allowed to be spend on " \ + "process RS update buffers during the collection pause.") \ + \ + product(bool, G1UseAdaptiveConcRefinement, true, \ + "Select green, yellow and red zones adaptively to meet the " \ + "the pause requirements.") \ + \ + product(size_t, G1ConcRSLogCacheSize, 10, \ + "Log base 2 of the length of conc RS hot-card cache.") \ + \ + product(uintx, G1ConcRSHotCardLimit, 4, \ + "The threshold that defines (>=) a hot card.") \ + \ + develop(intx, G1RSetRegionEntriesBase, 256, \ + "Max number of regions in a fine-grain table per MB.") \ + \ + product(intx, G1RSetRegionEntries, 0, \ + "Max number of regions for which we keep bitmaps." \ + "Will be set ergonomically by default") \ + \ + develop(intx, G1RSetSparseRegionEntriesBase, 4, \ + "Max number of entries per region in a sparse table " \ + "per MB.") \ + \ + product(intx, G1RSetSparseRegionEntries, 0, \ + "Max number of entries per region in a sparse table." \ + "Will be set ergonomically by default.") \ + \ + 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 failures 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(uintx, G1ReservePercent, 10, \ + "It determines the minimum reserve we should have in the heap " \ + "to minimize the probability of promotion failure.") \ + \ + diagnostic(bool, G1PrintHeapRegions, 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.") \ + \ + develop(bool, G1FailOnFPError, false, \ + "When set, G1 will fail when it encounters an FP 'error', " \ + "so as to allow debugging") \ + \ + product(size_t, G1HeapRegionSize, 0, \ + "Size of the G1 regions.") \ + \ + product(uintx, G1ConcRefinementThreads, 0, \ + "If non-0 is the number of parallel rem set update threads, " \ + "otherwise the value is determined ergonomically.") \ + \ + develop(bool, G1VerifyCTCleanup, false, \ + "Verify card table cleanup.") \ + \ + product(size_t, G1RSetScanBlockSize, 64, \ + "Size of a work unit of cards claimed by a worker thread" \ + "during RSet scanning.") \ + \ + develop(uintx, G1SecondaryFreeListAppendLength, 5, \ + "The number of regions we will add to the secondary free list " \ + "at every append operation") \ + \ + develop(bool, G1ConcRegionFreeingVerbose, false, \ + "Enables verboseness during concurrent region freeing") \ + \ + develop(bool, G1StressConcRegionFreeing, false, \ + "It stresses the concurrent region freeing operation") \ + \ + develop(uintx, G1StressConcRegionFreeingDelayMillis, 0, \ + "Artificial delay during concurrent region freeing") \ + \ + develop(uintx, G1DummyRegionsPerGC, 0, \ + "The number of dummy regions G1 will allocate at the end of " \ + "each evacuation pause in order to artificially fill up the " \ + "heap and stress the marking implementation.") \ + \ + develop(bool, G1ExitOnExpansionFailure, false, \ + "Raise a fatal VM exit out of memory failure in the event " \ + " that heap expansion fails due to running out of swap.") \ + \ + develop(uintx, G1ConcMarkForceOverflow, 0, \ + "The number of times we'll force an overflow during " \ + "concurrent marking") \ + \ + experimental(uintx, G1NewSizePercent, 5, \ + "Percentage (0-100) of the heap size to use as default " \ + "minimum young gen size.") \ + \ + experimental(uintx, G1MaxNewSizePercent, 60, \ + "Percentage (0-100) of the heap size to use as default " \ + " maximum young gen size.") \ + \ + experimental(uintx, G1MixedGCLiveThresholdPercent, 85, \ + "Threshold for regions to be considered for inclusion in the " \ + "collection set of mixed GCs. " \ + "Regions with live bytes exceeding this will not be collected.") \ + \ + product(uintx, G1HeapWastePercent, 5, \ + "Amount of space, expressed as a percentage of the heap size, " \ + "that G1 is willing not to collect to avoid expensive GCs.") \ + \ + product(uintx, G1MixedGCCountTarget, 8, \ + "The target number of mixed GCs after a marking cycle.") \ + \ + experimental(bool, G1EagerReclaimHumongousObjects, true, \ + "Try to reclaim dead large objects at every young GC.") \ + \ + experimental(bool, G1EagerReclaimHumongousObjectsWithStaleRefs, true, \ + "Try to reclaim dead large objects that have a few stale " \ + "references at every young GC.") \ + \ + experimental(bool, G1TraceEagerReclaimHumongousObjects, false, \ + "Print some information about large object liveness " \ + "at every young GC.") \ + \ + experimental(uintx, G1OldCSetRegionThresholdPercent, 10, \ + "An upper bound for the number of old CSet regions expressed " \ + "as a percentage of the heap size.") \ + \ + experimental(ccstr, G1LogLevel, NULL, \ + "Log level for G1 logging: fine, finer, finest") \ + \ + notproduct(bool, G1EvacuationFailureALot, false, \ + "Force use of evacuation failure handling during certain " \ + "evacuation pauses") \ + \ + develop(uintx, G1EvacuationFailureALotCount, 1000, \ + "Number of successful evacuations between evacuation failures " \ + "occurring at object copying") \ + \ + develop(uintx, G1EvacuationFailureALotInterval, 5, \ + "Total collections between forced triggering of evacuation " \ + "failures") \ + \ + develop(bool, G1EvacuationFailureALotDuringConcMark, true, \ + "Force use of evacuation failure handling during evacuation " \ + "pauses when marking is in progress") \ + \ + develop(bool, G1EvacuationFailureALotDuringInitialMark, true, \ + "Force use of evacuation failure handling during initial mark " \ + "evacuation pauses") \ + \ + develop(bool, G1EvacuationFailureALotDuringYoungGC, true, \ + "Force use of evacuation failure handling during young " \ + "evacuation pauses") \ + \ + develop(bool, G1EvacuationFailureALotDuringMixedGC, true, \ + "Force use of evacuation failure handling during mixed " \ + "evacuation pauses") \ + \ + diagnostic(bool, G1VerifyRSetsDuringFullGC, false, \ + "If true, perform verification of each heap region's " \ + "remembered set when verifying the heap during a full GC.") \ + \ + diagnostic(bool, G1VerifyHeapRegionCodeRoots, false, \ + "Verify the code root lists attached to each heap region.") \ + \ + develop(bool, G1VerifyBitmaps, false, \ + "Verifies the consistency of the marking bitmaps") + +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) + +#endif // SHARE_VM_GC_G1_G1_GLOBALS_HPP