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src/share/vm/gc_implementation/g1/g1_globals.hpp@8f1042ff784d (annotated)

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

Fri, 18 Feb 2011 10:07:34 -0800

author

johnc

date

Fri, 18 Feb 2011 10:07:34 -0800

changeset 2718

8f1042ff784d

parent 2717

371bbc844bf1

child 2781

e1162778c1c8

permissions

-rw-r--r--

7020042: G1: Partially remove fix for 6994628
Summary: Disable reference discovery and processing during concurrent marking by disabling fix for 6994628.
Reviewed-by: tonyp, ysr

ysr@777	1	/*
tonyp@2469	2	* Copyright (c) 2001, 2011, 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"
stefank@2314	29
ysr@777	30	//
ysr@777	31	// Defines all globals flags used by the garbage-first compiler.
ysr@777	32	//
ysr@777	33
ysr@785	34	#define G1_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw) \
ysr@777	35	\
johnc@1186	36	product(intx, G1ConfidencePercent, 50, \
ysr@777	37	"Confidence level for MMU/pause predictions") \
ysr@777	38	\
tonyp@1319	39	develop(intx, G1MarkingOverheadPercent, 0, \
ysr@777	40	"Overhead of concurrent marking") \
ysr@777	41	\
johnc@1186	42	develop(bool, G1Gen, true, \
ysr@777	43	"If true, it will enable the generational G1") \
ysr@777	44	\
johnc@1186	45	develop(intx, G1PolicyVerbose, 0, \
ysr@777	46	"The verbosity level on G1 policy decisions") \
ysr@777	47	\
ysr@777	48	develop(intx, G1MarkingVerboseLevel, 0, \
ysr@777	49	"Level (0-4) of verboseness of the marking code") \
ysr@777	50	\
tonyp@1479	51	develop(bool, G1PrintReachableAtInitialMark, false, \
tonyp@1479	52	"Reachable object dump at the initial mark pause") \
tonyp@1479	53	\
tonyp@1479	54	develop(bool, G1VerifyDuringGCPrintReachable, false, \
tonyp@1479	55	"If conc mark verification fails, dump reachable objects") \
tonyp@1479	56	\
tonyp@1479	57	develop(ccstr, G1PrintReachableBaseFile, NULL, \
tonyp@1479	58	"The base file name for the reachable object dumps") \
ysr@777	59	\
ysr@777	60	develop(bool, G1TraceMarkStackOverflow, false, \
ysr@777	61	"If true, extra debugging code for CM restart for ovflw.") \
ysr@777	62	\
ysr@777	63	develop(intx, G1PausesBtwnConcMark, -1, \
ysr@777	64	"If positive, fixed number of pauses between conc markings") \
ysr@777	65	\
tonyp@1717	66	diagnostic(bool, G1SummarizeConcMark, false, \
ysr@777	67	"Summarize concurrent mark info") \
ysr@777	68	\
johnc@1186	69	diagnostic(bool, G1SummarizeRSetStats, false, \
ysr@777	70	"Summarize remembered set processing info") \
ysr@777	71	\
tonyp@1319	72	diagnostic(intx, G1SummarizeRSetStatsPeriod, 0, \
tonyp@1319	73	"The period (in number of GCs) at which we will generate " \
tonyp@1319	74	"update buffer processing info " \
tonyp@1319	75	"(0 means do not periodically generate this info); " \
tonyp@1319	76	"it also requires -XX:+G1SummarizeRSetStats") \
tonyp@1319	77	\
tonyp@1717	78	diagnostic(bool, G1TraceConcRefinement, false, \
ysr@777	79	"Trace G1 concurrent refinement") \
ysr@777	80	\
johnc@1186	81	product(intx, G1MarkRegionStackSize, 1024 * 1024, \
ysr@777	82	"Size of the region stack for concurrent marking.") \
ysr@777	83	\
johnc@2494	84	product(double, G1ConcMarkStepDurationMillis, 10.0, \
johnc@2494	85	"Target duration of individual concurrent marking steps " \
johnc@2494	86	"in milliseconds.") \
johnc@2494	87	\
johnc@2494	88	product(intx, G1RefProcDrainInterval, 10, \
johnc@2494	89	"The number of discovered reference objects to process before " \
johnc@2494	90	"draining concurrent marking work queues.") \
johnc@2494	91	\
johnc@2718	92	experimental(bool, G1UseConcMarkReferenceProcessing, false, \
johnc@2718	93	"If true, enable reference discovery during concurrent " \
johnc@2718	94	"marking and reference processing at the end of remark " \
johnc@2718	95	"(unsafe).") \
johnc@2718	96	\
ysr@777	97	develop(bool, G1SATBBarrierPrintNullPreVals, false, \
ysr@777	98	"If true, count frac of ptr writes with null pre-vals.") \
ysr@777	99	\
tonyp@1717	100	product(intx, G1SATBBufferSize, 1*K, \
ysr@777	101	"Number of entries in an SATB log buffer.") \
ysr@777	102	\
tonyp@1717	103	develop(intx, G1SATBProcessCompletedThreshold, 20, \
ysr@777	104	"Number of completed buffers that triggers log processing.") \
ysr@777	105	\
tonyp@2469	106	product(uintx, G1SATBBufferEnqueueingThresholdPercent, 60, \
tonyp@2469	107	"Before enqueueing them, each mutator thread tries to do some " \
tonyp@2469	108	"filtering on the SATB buffers it generates. If post-filtering " \
tonyp@2469	109	"the percentage of retained entries is over this threshold " \
tonyp@2469	110	"the buffer will be enqueued for processing. A value of 0 " \
tonyp@2469	111	"specifies that mutator threads should not do such filtering.") \
tonyp@2469	112	\
ysr@777	113	develop(intx, G1ExtraRegionSurvRate, 33, \
ysr@777	114	"If the young survival rate is S, and there's room left in " \
ysr@777	115	"to-space, we will allow regions whose survival rate is up to " \
ysr@777	116	"S + (1 - S)*X, where X is this parameter (as a fraction.)") \
ysr@777	117	\
ysr@777	118	develop(intx, G1InitYoungSurvRatio, 50, \
ysr@777	119	"Expected Survival Rate for newly allocated bytes") \
ysr@777	120	\
ysr@777	121	develop(bool, G1SATBPrintStubs, false, \
ysr@777	122	"If true, print generated stubs for the SATB barrier") \
ysr@777	123	\
tonyp@1717	124	experimental(intx, G1ExpandByPercentOfAvailable, 20, \
ysr@777	125	"When expanding, % of uncommitted space to claim.") \
ysr@777	126	\
ysr@777	127	develop(bool, G1RSBarrierRegionFilter, true, \
ysr@777	128	"If true, generate region filtering code in RS barrier") \
ysr@777	129	\
ysr@777	130	develop(bool, G1RSBarrierNullFilter, true, \
ysr@777	131	"If true, generate null-pointer filtering code in RS barrier") \
ysr@777	132	\
ysr@777	133	develop(bool, G1PrintCTFilterStats, false, \
ysr@777	134	"If true, print stats on RS filtering effectiveness") \
ysr@777	135	\
iveresov@1051	136	develop(bool, G1DeferredRSUpdate, true, \
iveresov@1051	137	"If true, use deferred RS updates") \
iveresov@1051	138	\
ysr@777	139	develop(bool, G1RSLogCheckCardTable, false, \
ysr@777	140	"If true, verify that no dirty cards remain after RS log " \
ysr@777	141	"processing.") \
ysr@777	142	\
ysr@777	143	develop(bool, G1RSCountHisto, false, \
ysr@777	144	"If true, print a histogram of RS occupancies after each pause") \
ysr@777	145	\
tonyp@2717	146	product(bool, G1PrintRegionLivenessInfo, false, \
tonyp@2717	147	"Prints the liveness information for all regions in the heap " \
tonyp@2717	148	"at the end of a marking cycle.") \
ysr@777	149	\
ysr@777	150	develop(bool, G1PrintParCleanupStats, false, \
ysr@777	151	"When true, print extra stats about parallel cleanup.") \
ysr@777	152	\
ysr@777	153	develop(bool, G1DisablePreBarrier, false, \
ysr@777	154	"Disable generation of pre-barrier (i.e., marking barrier) ") \
ysr@777	155	\
ysr@777	156	develop(bool, G1DisablePostBarrier, false, \
ysr@777	157	"Disable generation of post-barrier (i.e., RS barrier) ") \
ysr@777	158	\
tonyp@1318	159	product(intx, G1UpdateBufferSize, 256, \
tonyp@1318	160	"Size of an update buffer") \
tonyp@1318	161	\
tonyp@1717	162	product(intx, G1ConcRefinementYellowZone, 0, \
tonyp@1318	163	"Number of enqueued update buffers that will " \
iveresov@1546	164	"trigger concurrent processing. Will be selected ergonomically " \
iveresov@1546	165	"by default.") \
tonyp@1318	166	\
tonyp@1717	167	product(intx, G1ConcRefinementRedZone, 0, \
tonyp@1318	168	"Maximum number of enqueued update buffers before mutator " \
iveresov@1546	169	"threads start processing new ones instead of enqueueing them. " \
iveresov@1546	170	"Will be selected ergonomically by default. Zero will disable " \
iveresov@1546	171	"concurrent processing.") \
iveresov@1546	172	\
tonyp@1717	173	product(intx, G1ConcRefinementGreenZone, 0, \
iveresov@1546	174	"The number of update buffers that are left in the queue by the " \
iveresov@1546	175	"concurrent processing threads. Will be selected ergonomically " \
iveresov@1546	176	"by default.") \
iveresov@1546	177	\
tonyp@1717	178	product(intx, G1ConcRefinementServiceIntervalMillis, 300, \
iveresov@1546	179	"The last concurrent refinement thread wakes up every " \
iveresov@1546	180	"specified number of milliseconds to do miscellaneous work.") \
iveresov@1546	181	\
tonyp@1717	182	product(intx, G1ConcRefinementThresholdStep, 0, \
iveresov@1546	183	"Each time the rset update queue increases by this amount " \
iveresov@1546	184	"activate the next refinement thread if available. " \
iveresov@1546	185	"Will be selected ergonomically by default.") \
iveresov@1546	186	\
tonyp@1717	187	product(intx, G1RSetUpdatingPauseTimePercent, 10, \
iveresov@1546	188	"A target percentage of time that is allowed to be spend on " \
iveresov@1546	189	"process RS update buffers during the collection pause.") \
iveresov@1546	190	\
tonyp@1717	191	product(bool, G1UseAdaptiveConcRefinement, true, \
iveresov@1546	192	"Select green, yellow and red zones adaptively to meet the " \
iveresov@1546	193	"the pause requirements.") \
ysr@777	194	\
ysr@777	195	develop(intx, G1ConcRSLogCacheSize, 10, \
ysr@777	196	"Log base 2 of the length of conc RS hot-card cache.") \
ysr@777	197	\
johnc@1186	198	develop(intx, G1ConcRSHotCardLimit, 4, \
ysr@777	199	"The threshold that defines (>=) a hot card.") \
ysr@777	200	\
johnc@2713	201	develop(intx, G1MaxHotCardCountSizePercent, 25, \
johnc@2713	202	"The maximum size of the hot card count cache as a " \
johnc@2713	203	"percentage of the number of cards for the maximum heap.") \
johnc@2713	204	\
ysr@777	205	develop(bool, G1PrintOopAppls, false, \
ysr@777	206	"When true, print applications of closures to external locs.") \
ysr@777	207	\
iveresov@1696	208	develop(intx, G1RSetRegionEntriesBase, 256, \
iveresov@1696	209	"Max number of regions in a fine-grain table per MB.") \
iveresov@1696	210	\
iveresov@1696	211	product(intx, G1RSetRegionEntries, 0, \
iveresov@1696	212	"Max number of regions for which we keep bitmaps." \
iveresov@1696	213	"Will be set ergonomically by default") \
iveresov@1696	214	\
iveresov@1696	215	develop(intx, G1RSetSparseRegionEntriesBase, 4, \
iveresov@1696	216	"Max number of entries per region in a sparse table " \
iveresov@1696	217	"per MB.") \
iveresov@1696	218	\
iveresov@1696	219	product(intx, G1RSetSparseRegionEntries, 0, \
iveresov@1696	220	"Max number of entries per region in a sparse table." \
iveresov@1696	221	"Will be set ergonomically by default.") \
ysr@777	222	\
ysr@777	223	develop(bool, G1RecordHRRSOops, false, \
ysr@777	224	"When true, record recent calls to rem set operations.") \
ysr@777	225	\
ysr@777	226	develop(bool, G1RecordHRRSEvents, false, \
ysr@777	227	"When true, record recent calls to rem set operations.") \
ysr@777	228	\
ysr@777	229	develop(intx, G1MaxVerifyFailures, -1, \
ysr@777	230	"The maximum number of verification failrues to print. " \
ysr@777	231	"-1 means print all.") \
ysr@777	232	\
ysr@777	233	develop(bool, G1ScrubRemSets, true, \
ysr@777	234	"When true, do RS scrubbing after cleanup.") \
ysr@777	235	\
ysr@777	236	develop(bool, G1RSScrubVerbose, false, \
ysr@777	237	"When true, do RS scrubbing with verbose output.") \
ysr@777	238	\
ysr@777	239	develop(bool, G1YoungSurvRateVerbose, false, \
ysr@777	240	"print out the survival rate of young regions according to age.") \
ysr@777	241	\
ysr@777	242	develop(intx, G1YoungSurvRateNumRegionsSummary, 0, \
ysr@777	243	"the number of regions for which we'll print a surv rate " \
ysr@777	244	"summary.") \
ysr@777	245	\
tonyp@1717	246	product(intx, G1ReservePercent, 10, \
ysr@777	247	"It determines the minimum reserve we should have in the heap " \
ysr@777	248	"to minimize the probability of promotion failure.") \
ysr@777	249	\
tonyp@1717	250	diagnostic(bool, G1PrintHeapRegions, false, \
ysr@777	251	"If set G1 will print information on which regions are being " \
ysr@777	252	"allocated and which are reclaimed.") \
ysr@777	253	\
ysr@777	254	develop(bool, G1HRRSUseSparseTable, true, \
ysr@777	255	"When true, use sparse table to save space.") \
ysr@777	256	\
ysr@777	257	develop(bool, G1HRRSFlushLogBuffersOnVerify, false, \
ysr@777	258	"Forces flushing of log buffers before verification.") \
ysr@777	259	\
ysr@1522	260	develop(bool, G1FailOnFPError, false, \
ysr@1522	261	"When set, G1 will fail when it encounters an FP 'error', " \
ysr@1522	262	"so as to allow debugging") \
ysr@1522	263	\
johnc@1186	264	develop(bool, G1FixedTenuringThreshold, false, \
apetrusenko@980	265	"When set, G1 will not adjust the tenuring threshold") \
apetrusenko@980	266	\
johnc@1186	267	develop(bool, G1FixedEdenSize, false, \
apetrusenko@980	268	"When set, G1 will not allocate unused survivor space regions") \
apetrusenko@980	269	\
johnc@1186	270	develop(uintx, G1FixedSurvivorSpaceSize, 0, \
apetrusenko@980	271	"If non-0 is the size of the G1 survivor space, " \
tonyp@1073	272	"otherwise SurvivorRatio is used to determine the size") \
tonyp@1073	273	\
tonyp@1377	274	product(uintx, G1HeapRegionSize, 0, \
tonyp@1377	275	"Size of the G1 regions.") \
tonyp@1377	276	\
tonyp@1792	277	experimental(bool, G1UseParallelRSetUpdating, true, \
tonyp@1073	278	"Enables the parallelization of remembered set updating " \
tonyp@1073	279	"during evacuation pauses") \
tonyp@1073	280	\
tonyp@1792	281	experimental(bool, G1UseParallelRSetScanning, true, \
tonyp@1073	282	"Enables the parallelization of remembered set scanning " \
iveresov@1229	283	"during evacuation pauses") \
iveresov@1229	284	\
tonyp@1717	285	product(uintx, G1ConcRefinementThreads, 0, \
iveresov@1229	286	"If non-0 is the number of parallel rem set update threads, " \
johnc@1325	287	"otherwise the value is determined ergonomically.") \
johnc@1325	288	\
johnc@1325	289	develop(intx, G1CardCountCacheExpandThreshold, 16, \
johnc@1325	290	"Expand the card count cache if the number of collisions for " \
apetrusenko@1375	291	"a particular entry exceeds this value.") \
apetrusenko@1375	292	\
apetrusenko@1375	293	develop(bool, G1VerifyCTCleanup, false, \
ysr@1629	294	"Verify card table cleanup.") \
ysr@1629	295	\
iveresov@1696	296	product(uintx, G1RSetScanBlockSize, 64, \
iveresov@1696	297	"Size of a work unit of cards claimed by a worker thread" \
iveresov@1696	298	"during RSet scanning.") \
iveresov@1696	299	\
tonyp@2472	300	develop(uintx, G1SecondaryFreeListAppendLength, 5, \
tonyp@2472	301	"The number of regions we will add to the secondary free list " \
tonyp@2472	302	"at every append operation") \
tonyp@2472	303	\
tonyp@2472	304	develop(bool, G1ConcRegionFreeingVerbose, false, \
tonyp@2472	305	"Enables verboseness during concurrent region freeing") \
tonyp@2472	306	\
tonyp@2472	307	develop(bool, G1StressConcRegionFreeing, false, \
tonyp@2472	308	"It stresses the concurrent region freeing operation") \
tonyp@2472	309	\
tonyp@2472	310	develop(uintx, G1StressConcRegionFreeingDelayMillis, 0, \
tonyp@2472	311	"Artificial delay during concurrent region freeing") \
tonyp@2472	312	\
johnc@2504	313	develop(bool, ReduceInitialCardMarksForG1, false, \
ysr@1629	314	"When ReduceInitialCardMarks is true, this flag setting " \
johnc@2504	315	" controls whether G1 allows the RICM optimization") \
johnc@2504	316	\
johnc@2504	317	develop(bool, G1ExitOnExpansionFailure, false, \
johnc@2504	318	"Raise a fatal VM exit out of memory failure in the event " \
johnc@2504	319	" that heap expansion fails due to running out of swap.")
ysr@777	320
ysr@785	321	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	322
stefank@2314	323	#endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1_GLOBALS_HPP