--- old/src/share/vm/gc/g1/g1_globals.hpp 2017-03-12 11:11:21.374840807 +0100 +++ /dev/null 2017-03-08 12:03:25.330745819 +0100 @@ -1,336 +0,0 @@ -/* - * 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. - * - * 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" -#include // 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, \ - experimental, \ - notproduct, \ - manageable, \ - 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, \ - DECLARE_EXPERIMENTAL_FLAG, \ - DECLARE_NOTPRODUCT_FLAG, \ - DECLARE_MANAGEABLE_FLAG, \ - DECLARE_PRODUCT_RW_FLAG, \ - IGNORE_RANGE, \ - IGNORE_CONSTRAINT, \ - IGNORE_WRITEABLE) - -#endif // SHARE_VM_GC_G1_G1_GLOBALS_HPP --- /dev/null 2017-03-08 12:03:25.330745819 +0100 +++ new/src/share/vm/gc/epsilon/epsilon_globals.hpp 2017-03-12 11:11:21.262841229 +0100 @@ -0,0 +1,65 @@ +/* + * 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. + * + * 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_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, \ + experimental, \ + notproduct, \ + manageable, \ + 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, \ + DECLARE_EXPERIMENTAL_FLAG, \ + DECLARE_NOTPRODUCT_FLAG, \ + DECLARE_MANAGEABLE_FLAG, \ + DECLARE_PRODUCT_RW_FLAG, \ + IGNORE_RANGE, \ + IGNORE_CONSTRAINT, \ + IGNORE_WRITEABLE) + +#endif // SHARE_VM_GC_EPSILON_GLOBALS_HPP