• file
• revisions
• annotate
• diff
• comparison
• raw

src/share/vm/gc_implementation/g1/g1_globals.hpp@8a5ea0a9ccc4 (annotated)

src/share/vm/gc_implementation/g1/g1_globals.hpp

Sat, 06 Oct 2012 01:17:44 -0700

author

johnc

date

Sat, 06 Oct 2012 01:17:44 -0700

changeset 4173

8a5ea0a9ccc4

parent 4016

c9814fadeb38

child 4385

37f7535e5f18

permissions

-rw-r--r--

7127708: G1: change task num types from int to uint in concurrent mark
Summary: Change the type of various task num fields, parameters etc to unsigned and rename them to be more consistent with the other collectors. Code changes were also reviewed by Vitaly Davidovich.
Reviewed-by: johnc
Contributed-by: Kaushik Srenevasan <kaushik@twitter.com>

ysr@777	1	/*
tonyp@3539	2	* Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved.
ysr@777	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
ysr@777	4	*
ysr@777	5	* This code is free software; you can redistribute it and/or modify it
ysr@777	6	* under the terms of the GNU General Public License version 2 only, as
ysr@777	7	* published by the Free Software Foundation.
ysr@777	8	*
ysr@777	9	* This code is distributed in the hope that it will be useful, but WITHOUT
ysr@777	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
ysr@777	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
ysr@777	12	* version 2 for more details (a copy is included in the LICENSE file that
ysr@777	13	* accompanied this code).
ysr@777	14	*
ysr@777	15	* You should have received a copy of the GNU General Public License version
ysr@777	16	* 2 along with this work; if not, write to the Free Software Foundation,
ysr@777	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
ysr@777	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
ysr@777	22	*
ysr@777	23	*/
ysr@777	24
stefank@2314	25	#ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1_GLOBALS_HPP
stefank@2314	26	#define SHARE_VM_GC_IMPLEMENTATION_G1_G1_GLOBALS_HPP
stefank@2314	27
stefank@2314	28	#include "runtime/globals.hpp"
ysr@777	29	//
ysr@777	30	// Defines all globals flags used by the garbage-first compiler.
ysr@777	31	//
ysr@777	32
ysr@785	33	#define G1_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw) \
ysr@777	34	\
johnc@1186	35	product(intx, G1ConfidencePercent, 50, \
ysr@777	36	"Confidence level for MMU/pause predictions") \
ysr@777	37	\
tonyp@1319	38	develop(intx, G1MarkingOverheadPercent, 0, \
ysr@777	39	"Overhead of concurrent marking") \
ysr@777	40	\
ysr@777	41	develop(intx, G1MarkingVerboseLevel, 0, \
ysr@777	42	"Level (0-4) of verboseness of the marking code") \
ysr@777	43	\
tonyp@1479	44	develop(bool, G1PrintReachableAtInitialMark, false, \
tonyp@1479	45	"Reachable object dump at the initial mark pause") \
tonyp@1479	46	\
tonyp@1479	47	develop(bool, G1VerifyDuringGCPrintReachable, false, \
tonyp@1479	48	"If conc mark verification fails, dump reachable objects") \
tonyp@1479	49	\
tonyp@1479	50	develop(ccstr, G1PrintReachableBaseFile, NULL, \
tonyp@1479	51	"The base file name for the reachable object dumps") \
ysr@777	52	\
ysr@777	53	develop(bool, G1TraceMarkStackOverflow, false, \
ysr@777	54	"If true, extra debugging code for CM restart for ovflw.") \
ysr@777	55	\
johnc@3891	56	develop(bool, G1TraceHeapRegionRememberedSet, false, \
johnc@3891	57	"Enables heap region remembered set debug logs") \
johnc@3891	58	\
tonyp@1717	59	diagnostic(bool, G1SummarizeConcMark, false, \
ysr@777	60	"Summarize concurrent mark info") \
ysr@777	61	\
johnc@1186	62	diagnostic(bool, G1SummarizeRSetStats, false, \
ysr@777	63	"Summarize remembered set processing info") \
ysr@777	64	\
tonyp@1319	65	diagnostic(intx, G1SummarizeRSetStatsPeriod, 0, \
tonyp@1319	66	"The period (in number of GCs) at which we will generate " \
tonyp@1319	67	"update buffer processing info " \
tonyp@1319	68	"(0 means do not periodically generate this info); " \
tonyp@1319	69	"it also requires -XX:+G1SummarizeRSetStats") \
tonyp@1319	70	\
tonyp@1717	71	diagnostic(bool, G1TraceConcRefinement, false, \
ysr@777	72	"Trace G1 concurrent refinement") \
ysr@777	73	\
johnc@2494	74	product(double, G1ConcMarkStepDurationMillis, 10.0, \
johnc@2494	75	"Target duration of individual concurrent marking steps " \
johnc@2494	76	"in milliseconds.") \
johnc@2494	77	\
johnc@2494	78	product(intx, G1RefProcDrainInterval, 10, \
johnc@2494	79	"The number of discovered reference objects to process before " \
johnc@2494	80	"draining concurrent marking work queues.") \
johnc@2494	81	\
johnc@2781	82	experimental(bool, G1UseConcMarkReferenceProcessing, true, \
johnc@2718	83	"If true, enable reference discovery during concurrent " \
johnc@2781	84	"marking and reference processing at the end of remark.") \
ysr@777	85	\
tonyp@1717	86	product(intx, G1SATBBufferSize, 1*K, \
ysr@777	87	"Number of entries in an SATB log buffer.") \
ysr@777	88	\
tonyp@1717	89	develop(intx, G1SATBProcessCompletedThreshold, 20, \
ysr@777	90	"Number of completed buffers that triggers log processing.") \
ysr@777	91	\
tonyp@2469	92	product(uintx, G1SATBBufferEnqueueingThresholdPercent, 60, \
tonyp@2469	93	"Before enqueueing them, each mutator thread tries to do some " \
tonyp@2469	94	"filtering on the SATB buffers it generates. If post-filtering " \
tonyp@2469	95	"the percentage of retained entries is over this threshold " \
tonyp@2469	96	"the buffer will be enqueued for processing. A value of 0 " \
tonyp@2469	97	"specifies that mutator threads should not do such filtering.") \
tonyp@2469	98	\
ysr@777	99	develop(intx, G1ExtraRegionSurvRate, 33, \
ysr@777	100	"If the young survival rate is S, and there's room left in " \
ysr@777	101	"to-space, we will allow regions whose survival rate is up to " \
ysr@777	102	"S + (1 - S)*X, where X is this parameter (as a fraction.)") \
ysr@777	103	\
ysr@777	104	develop(intx, G1InitYoungSurvRatio, 50, \
ysr@777	105	"Expected Survival Rate for newly allocated bytes") \
ysr@777	106	\
ysr@777	107	develop(bool, G1SATBPrintStubs, false, \
ysr@777	108	"If true, print generated stubs for the SATB barrier") \
ysr@777	109	\
tonyp@1717	110	experimental(intx, G1ExpandByPercentOfAvailable, 20, \
ysr@777	111	"When expanding, % of uncommitted space to claim.") \
ysr@777	112	\
ysr@777	113	develop(bool, G1RSBarrierRegionFilter, true, \
ysr@777	114	"If true, generate region filtering code in RS barrier") \
ysr@777	115	\
ysr@777	116	develop(bool, G1RSBarrierNullFilter, true, \
ysr@777	117	"If true, generate null-pointer filtering code in RS barrier") \
ysr@777	118	\
iveresov@1051	119	develop(bool, G1DeferredRSUpdate, true, \
iveresov@1051	120	"If true, use deferred RS updates") \
iveresov@1051	121	\
ysr@777	122	develop(bool, G1RSLogCheckCardTable, false, \
ysr@777	123	"If true, verify that no dirty cards remain after RS log " \
ysr@777	124	"processing.") \
ysr@777	125	\
ysr@777	126	develop(bool, G1RSCountHisto, false, \
ysr@777	127	"If true, print a histogram of RS occupancies after each pause") \
ysr@777	128	\
tonyp@3121	129	diagnostic(bool, G1PrintRegionLivenessInfo, false, \
tonyp@3121	130	"Prints the liveness information for all regions in the heap " \
tonyp@3121	131	"at the end of a marking cycle.") \
ysr@777	132	\
tonyp@1318	133	product(intx, G1UpdateBufferSize, 256, \
tonyp@1318	134	"Size of an update buffer") \
tonyp@1318	135	\
tonyp@1717	136	product(intx, G1ConcRefinementYellowZone, 0, \
tonyp@1318	137	"Number of enqueued update buffers that will " \
iveresov@1546	138	"trigger concurrent processing. Will be selected ergonomically " \
iveresov@1546	139	"by default.") \
tonyp@1318	140	\
tonyp@1717	141	product(intx, G1ConcRefinementRedZone, 0, \
tonyp@1318	142	"Maximum number of enqueued update buffers before mutator " \
iveresov@1546	143	"threads start processing new ones instead of enqueueing them. " \
iveresov@1546	144	"Will be selected ergonomically by default. Zero will disable " \
iveresov@1546	145	"concurrent processing.") \
iveresov@1546	146	\
tonyp@1717	147	product(intx, G1ConcRefinementGreenZone, 0, \
iveresov@1546	148	"The number of update buffers that are left in the queue by the " \
iveresov@1546	149	"concurrent processing threads. Will be selected ergonomically " \
iveresov@1546	150	"by default.") \
iveresov@1546	151	\
tonyp@1717	152	product(intx, G1ConcRefinementServiceIntervalMillis, 300, \
iveresov@1546	153	"The last concurrent refinement thread wakes up every " \
iveresov@1546	154	"specified number of milliseconds to do miscellaneous work.") \
iveresov@1546	155	\
tonyp@1717	156	product(intx, G1ConcRefinementThresholdStep, 0, \
iveresov@1546	157	"Each time the rset update queue increases by this amount " \
iveresov@1546	158	"activate the next refinement thread if available. " \
iveresov@1546	159	"Will be selected ergonomically by default.") \
iveresov@1546	160	\
tonyp@1717	161	product(intx, G1RSetUpdatingPauseTimePercent, 10, \
iveresov@1546	162	"A target percentage of time that is allowed to be spend on " \
iveresov@1546	163	"process RS update buffers during the collection pause.") \
iveresov@1546	164	\
tonyp@1717	165	product(bool, G1UseAdaptiveConcRefinement, true, \
iveresov@1546	166	"Select green, yellow and red zones adaptively to meet the " \
iveresov@1546	167	"the pause requirements.") \
ysr@777	168	\
ysr@777	169	develop(intx, G1ConcRSLogCacheSize, 10, \
ysr@777	170	"Log base 2 of the length of conc RS hot-card cache.") \
ysr@777	171	\
johnc@1186	172	develop(intx, G1ConcRSHotCardLimit, 4, \
ysr@777	173	"The threshold that defines (>=) a hot card.") \
ysr@777	174	\
johnc@2713	175	develop(intx, G1MaxHotCardCountSizePercent, 25, \
johnc@2713	176	"The maximum size of the hot card count cache as a " \
johnc@2713	177	"percentage of the number of cards for the maximum heap.") \
johnc@2713	178	\
ysr@777	179	develop(bool, G1PrintOopAppls, false, \
ysr@777	180	"When true, print applications of closures to external locs.") \
ysr@777	181	\
iveresov@1696	182	develop(intx, G1RSetRegionEntriesBase, 256, \
iveresov@1696	183	"Max number of regions in a fine-grain table per MB.") \
iveresov@1696	184	\
iveresov@1696	185	product(intx, G1RSetRegionEntries, 0, \
iveresov@1696	186	"Max number of regions for which we keep bitmaps." \
iveresov@1696	187	"Will be set ergonomically by default") \
iveresov@1696	188	\
iveresov@1696	189	develop(intx, G1RSetSparseRegionEntriesBase, 4, \
iveresov@1696	190	"Max number of entries per region in a sparse table " \
iveresov@1696	191	"per MB.") \
iveresov@1696	192	\
iveresov@1696	193	product(intx, G1RSetSparseRegionEntries, 0, \
iveresov@1696	194	"Max number of entries per region in a sparse table." \
iveresov@1696	195	"Will be set ergonomically by default.") \
ysr@777	196	\
ysr@777	197	develop(bool, G1RecordHRRSOops, false, \
ysr@777	198	"When true, record recent calls to rem set operations.") \
ysr@777	199	\
ysr@777	200	develop(bool, G1RecordHRRSEvents, false, \
ysr@777	201	"When true, record recent calls to rem set operations.") \
ysr@777	202	\
ysr@777	203	develop(intx, G1MaxVerifyFailures, -1, \
ysr@777	204	"The maximum number of verification failrues to print. " \
ysr@777	205	"-1 means print all.") \
ysr@777	206	\
ysr@777	207	develop(bool, G1ScrubRemSets, true, \
ysr@777	208	"When true, do RS scrubbing after cleanup.") \
ysr@777	209	\
ysr@777	210	develop(bool, G1RSScrubVerbose, false, \
ysr@777	211	"When true, do RS scrubbing with verbose output.") \
ysr@777	212	\
ysr@777	213	develop(bool, G1YoungSurvRateVerbose, false, \
ysr@777	214	"print out the survival rate of young regions according to age.") \
ysr@777	215	\
ysr@777	216	develop(intx, G1YoungSurvRateNumRegionsSummary, 0, \
ysr@777	217	"the number of regions for which we'll print a surv rate " \
ysr@777	218	"summary.") \
ysr@777	219	\
tonyp@3119	220	product(uintx, G1ReservePercent, 10, \
ysr@777	221	"It determines the minimum reserve we should have in the heap " \
ysr@777	222	"to minimize the probability of promotion failure.") \
ysr@777	223	\
tonyp@1717	224	diagnostic(bool, G1PrintHeapRegions, false, \
ysr@777	225	"If set G1 will print information on which regions are being " \
ysr@777	226	"allocated and which are reclaimed.") \
ysr@777	227	\
ysr@777	228	develop(bool, G1HRRSUseSparseTable, true, \
ysr@777	229	"When true, use sparse table to save space.") \
ysr@777	230	\
ysr@777	231	develop(bool, G1HRRSFlushLogBuffersOnVerify, false, \
ysr@777	232	"Forces flushing of log buffers before verification.") \
ysr@777	233	\
ysr@1522	234	develop(bool, G1FailOnFPError, false, \
ysr@1522	235	"When set, G1 will fail when it encounters an FP 'error', " \
ysr@1522	236	"so as to allow debugging") \
ysr@1522	237	\
tonyp@1377	238	product(uintx, G1HeapRegionSize, 0, \
tonyp@1377	239	"Size of the G1 regions.") \
tonyp@1377	240	\
tonyp@1792	241	experimental(bool, G1UseParallelRSetUpdating, true, \
tonyp@1073	242	"Enables the parallelization of remembered set updating " \
tonyp@1073	243	"during evacuation pauses") \
tonyp@1073	244	\
tonyp@1792	245	experimental(bool, G1UseParallelRSetScanning, true, \
tonyp@1073	246	"Enables the parallelization of remembered set scanning " \
iveresov@1229	247	"during evacuation pauses") \
iveresov@1229	248	\
tonyp@1717	249	product(uintx, G1ConcRefinementThreads, 0, \
iveresov@1229	250	"If non-0 is the number of parallel rem set update threads, " \
johnc@1325	251	"otherwise the value is determined ergonomically.") \
johnc@1325	252	\
johnc@1325	253	develop(intx, G1CardCountCacheExpandThreshold, 16, \
johnc@1325	254	"Expand the card count cache if the number of collisions for " \
apetrusenko@1375	255	"a particular entry exceeds this value.") \
apetrusenko@1375	256	\
apetrusenko@1375	257	develop(bool, G1VerifyCTCleanup, false, \
ysr@1629	258	"Verify card table cleanup.") \
ysr@1629	259	\
iveresov@1696	260	product(uintx, G1RSetScanBlockSize, 64, \
iveresov@1696	261	"Size of a work unit of cards claimed by a worker thread" \
iveresov@1696	262	"during RSet scanning.") \
iveresov@1696	263	\
tonyp@2472	264	develop(uintx, G1SecondaryFreeListAppendLength, 5, \
tonyp@2472	265	"The number of regions we will add to the secondary free list " \
tonyp@2472	266	"at every append operation") \
tonyp@2472	267	\
tonyp@2472	268	develop(bool, G1ConcRegionFreeingVerbose, false, \
tonyp@2472	269	"Enables verboseness during concurrent region freeing") \
tonyp@2472	270	\
tonyp@2472	271	develop(bool, G1StressConcRegionFreeing, false, \
tonyp@2472	272	"It stresses the concurrent region freeing operation") \
tonyp@2472	273	\
tonyp@2472	274	develop(uintx, G1StressConcRegionFreeingDelayMillis, 0, \
tonyp@2472	275	"Artificial delay during concurrent region freeing") \
tonyp@2472	276	\
tonyp@2817	277	develop(uintx, G1DummyRegionsPerGC, 0, \
tonyp@2817	278	"The number of dummy regions G1 will allocate at the end of " \
tonyp@2817	279	"each evacuation pause in order to artificially fill up the " \
tonyp@2817	280	"heap and stress the marking implementation.") \
tonyp@2817	281	\
johnc@2504	282	develop(bool, G1ExitOnExpansionFailure, false, \
johnc@2504	283	"Raise a fatal VM exit out of memory failure in the event " \
tonyp@2848	284	" that heap expansion fails due to running out of swap.") \
tonyp@2848	285	\
tonyp@2848	286	develop(uintx, G1ConcMarkForceOverflow, 0, \
tonyp@2848	287	"The number of times we'll force an overflow during " \
brutisso@3358	288	"concurrent marking") \
brutisso@3358	289	\
brutisso@3999	290	experimental(uintx, G1DefaultMinNewGenPercent, 20, \
brutisso@3358	291	"Percentage (0-100) of the heap size to use as minimum " \
brutisso@3358	292	"young gen size.") \
brutisso@3358	293	\
brutisso@3999	294	experimental(uintx, G1DefaultMaxNewGenPercent, 80, \
brutisso@3358	295	"Percentage (0-100) of the heap size to use as maximum " \
tonyp@3539	296	"young gen size.") \
tonyp@3539	297	\
brutisso@3999	298	experimental(uintx, G1OldCSetRegionLiveThresholdPercent, 90, \
tonyp@3539	299	"Threshold for regions to be added to the collection set. " \
brutisso@3999	300	"Regions with more live bytes than this will not be collected.") \
tonyp@3539	301	\
tonyp@3667	302	product(uintx, G1HeapWastePercent, 5, \
tonyp@3667	303	"Amount of space, expressed as a percentage of the heap size, " \
tonyp@3667	304	"that G1 is willing not to collect to avoid expensive GCs.") \
tonyp@3539	305	\
tonyp@3667	306	product(uintx, G1MixedGCCountTarget, 4, \
tonyp@3667	307	"The target number of mixed GCs after a marking cycle.") \
tonyp@3539	308	\
brutisso@3999	309	experimental(uintx, G1OldCSetRegionThresholdPercent, 10, \
tonyp@3539	310	"An upper bound for the number of old CSet regions expressed " \
brutisso@3710	311	"as a percentage of the heap size.") \
brutisso@3710	312	\
brutisso@3710	313	experimental(ccstr, G1LogLevel, NULL, \
johnc@4016	314	"Log level for G1 logging: fine, finer, finest") \
johnc@4016	315	\
johnc@4016	316	notproduct(bool, G1EvacuationFailureALot, false, \
johnc@4016	317	"Force use of evacuation failure handling during certain " \
johnc@4016	318	"evacuation pauses") \
johnc@4016	319	\
johnc@4016	320	develop(uintx, G1EvacuationFailureALotCount, 1000, \
johnc@4016	321	"Number of successful evacuations between evacuation failures " \
johnc@4016	322	"occurring at object copying") \
johnc@4016	323	\
johnc@4016	324	develop(uintx, G1EvacuationFailureALotInterval, 5, \
johnc@4016	325	"Total collections between forced triggering of evacuation " \
johnc@4016	326	"failures") \
johnc@4016	327	\
johnc@4016	328	develop(bool, G1EvacuationFailureALotDuringConcMark, true, \
johnc@4016	329	"Force use of evacuation failure handling during evacuation " \
johnc@4016	330	"pauses when marking is in progress") \
johnc@4016	331	\
johnc@4016	332	develop(bool, G1EvacuationFailureALotDuringInitialMark, true, \
johnc@4016	333	"Force use of evacuation failure handling during initial mark " \
johnc@4016	334	"evacuation pauses") \
johnc@4016	335	\
johnc@4016	336	develop(bool, G1EvacuationFailureALotDuringYoungGC, true, \
johnc@4016	337	"Force use of evacuation failure handling during young " \
johnc@4016	338	"evacuation pauses") \
johnc@4016	339	\
johnc@4016	340	develop(bool, G1EvacuationFailureALotDuringMixedGC, true, \
johnc@4016	341	"Force use of evacuation failure handling during mixed " \
johnc@4016	342	"evacuation pauses")
ysr@777	343
ysr@785	344	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)
stefank@2314	345
stefank@2314	346	#endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1_GLOBALS_HPP