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src/share/vm/gc/epsilon/epsilon_globals.hpp
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*** 1,7 ****
/*
! * Copyright (c) 2001, 2016, 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.
--- 1,7 ----
/*
! * Copyright (c) 2017, Red Hat, Inc. and/or its affiliates.
* 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.
*** 20,39 ****
* 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"
- #include <float.h> // for DBL_MAX
//
! // Defines all globals flags used by the garbage-first compiler.
//
! #define G1_FLAGS(develop, \
develop_pd, \
product, \
product_pd, \
diagnostic, \
diagnostic_pd, \
--- 20,38 ----
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
! #ifndef SHARE_VM_GC_EPSILON_GLOBALS_HPP
! #define SHARE_VM_GC_EPSILON_GLOBALS_HPP
#include "runtime/globals.hpp"
//
! // Defines all globals flags used by the Epsilon GC.
//
! #define EPSILON_FLAGS(develop, \
develop_pd, \
product, \
product_pd, \
diagnostic, \
diagnostic_pd, \
*** 43,327 ****
product_rw, \
range, \
constraint, \
writeable) \
\
! product(bool, G1UseAdaptiveIHOP, true, \
! "Adaptively adjust the initiating heap occupancy from the " \
! "initial value of InitiatingHeapOccupancyPercent. The policy " \
! "attempts to start marking in time based on application " \
! "behavior.") \
! \
! experimental(size_t, G1AdaptiveIHOPNumInitialSamples, 3, \
! "How many completed time periods from initial mark to first " \
! "mixed gc are required to use the input values for prediction " \
! "of the optimal occupancy to start marking.") \
! range(1, max_intx) \
! \
! product(uintx, G1ConfidencePercent, 50, \
! "Confidence level for MMU/pause predictions") \
! range(0, 100) \
! \
! develop(intx, G1MarkingOverheadPercent, 0, \
! "Overhead of concurrent marking") \
! range(0, 100) \
! \
! 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 that logging is enabled on the trace" \
! "level for gc+remset") \
! range(0, max_intx) \
! \
! product(double, G1ConcMarkStepDurationMillis, 10.0, \
! "Target duration of individual concurrent marking steps " \
! "in milliseconds.") \
! range(1.0, DBL_MAX) \
! \
! product(intx, G1RefProcDrainInterval, 10, \
! "The number of discovered reference objects to process before " \
! "draining concurrent marking work queues.") \
! range(1, max_intx) \
! \
! experimental(double, G1LastPLABAverageOccupancy, 50.0, \
! "The expected average occupancy of the last PLAB in " \
! "percent.") \
! range(0.001, 100.0) \
! \
! product(size_t, G1SATBBufferSize, 1*K, \
! "Number of entries in an SATB log buffer.") \
! range(1, max_uintx) \
! \
! develop(intx, G1SATBProcessCompletedThreshold, 20, \
! "Number of completed buffers that triggers log processing.") \
! range(0, max_jint) \
! \
! 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.") \
! range(0, 100) \
! \
! experimental(intx, G1ExpandByPercentOfAvailable, 20, \
! "When expanding, % of uncommitted space to claim.") \
! range(0, 100) \
! \
! develop(bool, G1RSBarrierRegionFilter, true, \
! "If true, generate region filtering code in RS barrier") \
! \
! product(size_t, G1UpdateBufferSize, 256, \
! "Size of an update buffer") \
! range(1, NOT_LP64(32*M) LP64_ONLY(1*G)) \
! \
! product(size_t, G1ConcRefinementYellowZone, 0, \
! "Number of enqueued update buffers that will " \
! "trigger concurrent processing. Will be selected ergonomically " \
! "by default.") \
! range(0, max_intx) \
! \
! product(size_t, 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.") \
! range(0, max_intx) \
! \
! product(size_t, G1ConcRefinementGreenZone, 0, \
! "The number of update buffers that are left in the queue by the " \
! "concurrent processing threads. Will be selected ergonomically " \
! "by default.") \
! range(0, max_intx) \
! \
! product(uintx, G1ConcRefinementServiceIntervalMillis, 300, \
! "The last concurrent refinement thread wakes up every " \
! "specified number of milliseconds to do miscellaneous work.") \
! range(0, max_jint) \
! \
! product(size_t, G1ConcRefinementThresholdStep, 2, \
! "Each time the rset update queue increases by this amount " \
! "activate the next refinement thread if available. " \
! "The actual step size will be selected ergonomically by " \
! "default, with this value used to determine a lower bound.") \
! range(1, SIZE_MAX) \
! \
! product(intx, G1RSetUpdatingPauseTimePercent, 10, \
! "A target percentage of time that is allowed to be spend on " \
! "process RS update buffers during the collection pause.") \
! range(0, 100) \
! \
! 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.") \
! range(0, 27) \
! \
! product(uintx, G1ConcRSHotCardLimit, 4, \
! "The threshold that defines (>=) a hot card.") \
! range(0, max_jubyte) \
! \
! develop(intx, G1RSetRegionEntriesBase, 256, \
! "Max number of regions in a fine-grain table per MB.") \
! range(1, max_jint/wordSize) \
! \
! product(intx, G1RSetRegionEntries, 0, \
! "Max number of regions for which we keep bitmaps." \
! "Will be set ergonomically by default") \
! range(0, max_jint/wordSize) \
! constraint(G1RSetRegionEntriesConstraintFunc,AfterErgo) \
! \
! develop(intx, G1RSetSparseRegionEntriesBase, 4, \
! "Max number of entries per region in a sparse table " \
! "per MB.") \
! range(1, max_jint/wordSize) \
! \
! product(intx, G1RSetSparseRegionEntries, 0, \
! "Max number of entries per region in a sparse table." \
! "Will be set ergonomically by default.") \
! range(0, max_jint/wordSize) \
! constraint(G1RSetSparseRegionEntriesConstraintFunc,AfterErgo) \
! \
! develop(intx, G1MaxVerifyFailures, -1, \
! "The maximum number of verification failures to print. " \
! "-1 means print all.") \
! range(-1, max_jint) \
! \
! develop(bool, G1ScrubRemSets, true, \
! "When true, do RS scrubbing after cleanup.") \
! \
! product(uintx, G1ReservePercent, 10, \
! "It determines the minimum reserve we should have in the heap " \
! "to minimize the probability of promotion failure.") \
! range(0, 50) \
! \
! develop(bool, G1HRRSUseSparseTable, true, \
! "When true, use sparse table to save space.") \
! \
! develop(bool, G1HRRSFlushLogBuffersOnVerify, false, \
! "Forces flushing of log buffers before verification.") \
! \
! product(size_t, G1HeapRegionSize, 0, \
! "Size of the G1 regions.") \
! range(0, 32*M) \
! constraint(G1HeapRegionSizeConstraintFunc,AfterMemoryInit) \
! \
! product(uint, G1ConcRefinementThreads, 0, \
! "The number of parallel rem set update threads. " \
! "Will be set ergonomically by default.") \
! range(0, (max_jint-1)/wordSize) \
! \
! 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.") \
! range(1, max_uintx) \
! \
! develop(uintx, G1SecondaryFreeListAppendLength, 5, \
! "The number of regions we will add to the secondary free list " \
! "at every append operation") \
! \
! 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.") \
! \
! experimental(uintx, G1MaxNewSizePercent, 60, \
! "Percentage (0-100) of the heap size to use as default " \
! " maximum young gen size.") \
! range(0, 100) \
! constraint(G1MaxNewSizePercentConstraintFunc,AfterErgo) \
! \
! experimental(uintx, G1NewSizePercent, 5, \
! "Percentage (0-100) of the heap size to use as default " \
! "minimum young gen size.") \
! range(0, 100) \
! constraint(G1NewSizePercentConstraintFunc,AfterErgo) \
! \
! 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.") \
! range(0, 100) \
! \
! 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.") \
! range(0, 100) \
! \
! product(uintx, G1MixedGCCountTarget, 8, \
! "The target number of mixed GCs after a marking cycle.") \
! range(0, max_uintx) \
! \
! experimental(bool, G1PretouchAuxiliaryMemory, false, \
! "Pre-touch large auxiliary data structures used by the GC.") \
! \
! 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(uintx, G1OldCSetRegionThresholdPercent, 10, \
! "An upper bound for the number of old CSet regions expressed " \
! "as a percentage of the heap size.") \
! range(0, 100) \
! \
! 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_PD_DIAGNOSTIC_FLAG, \
--- 42,56 ----
product_rw, \
range, \
constraint, \
writeable) \
\
! experimental(size_t, EpsilonTLABSize, 4 * M, \
! "Static TLAB size for Epsilon GC.") \
! range(1, max_intx)
! EPSILON_FLAGS(DECLARE_DEVELOPER_FLAG, \
DECLARE_PD_DEVELOPER_FLAG, \
DECLARE_PRODUCT_FLAG, \
DECLARE_PD_PRODUCT_FLAG, \
DECLARE_DIAGNOSTIC_FLAG, \
DECLARE_PD_DIAGNOSTIC_FLAG, \
*** 331,336 ****
DECLARE_PRODUCT_RW_FLAG, \
IGNORE_RANGE, \
IGNORE_CONSTRAINT, \
IGNORE_WRITEABLE)
! #endif // SHARE_VM_GC_G1_G1_GLOBALS_HPP
--- 60,65 ----
DECLARE_PRODUCT_RW_FLAG, \
IGNORE_RANGE, \
IGNORE_CONSTRAINT, \
IGNORE_WRITEABLE)
! #endif // SHARE_VM_GC_EPSILON_GLOBALS_HPP
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