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src/share/vm/gc_implementation/g1/g1_globals.hpp@e1fdf4fd34dc (annotated)

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

Wed, 19 Aug 2009 12:53:25 -0400

author

tonyp

date

Wed, 19 Aug 2009 12:53:25 -0400

changeset 1371

e1fdf4fd34dc

parent 1325

6cb8e9df7174

child 1375

8624da129f0b

permissions

-rw-r--r--

6871111: G1: remove the concurrent overhead tracker
Summary: Removing the concurrent overhead tracker from G1, along with the GC overhead reporter and the G1AccountConcurrentOverhead (both of which rely on the the concurrent overhead tracker).
Reviewed-by: iveresov, johnc

ysr@777	1	/*
xdono@1014	2	* Copyright 2001-2009 Sun Microsystems, Inc. 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	*
ysr@777	19	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
ysr@777	20	* CA 95054 USA or visit www.sun.com if you need additional information or
ysr@777	21	* have any questions.
ysr@777	22	*
ysr@777	23	*/
ysr@777	24
ysr@777	25	//
ysr@777	26	// Defines all globals flags used by the garbage-first compiler.
ysr@777	27	//
ysr@777	28
ysr@785	29	#define G1_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw) \
ysr@777	30	\
johnc@1186	31	product(intx, G1ParallelGCAllocBufferSize, 8*K, \
ysr@777	32	"Size of parallel G1 allocation buffers in to-space.") \
ysr@777	33	\
johnc@1186	34	product(intx, G1ConfidencePercent, 50, \
ysr@777	35	"Confidence level for MMU/pause predictions") \
ysr@777	36	\
tonyp@1319	37	develop(intx, G1MarkingOverheadPercent, 0, \
ysr@777	38	"Overhead of concurrent marking") \
ysr@777	39	\
ysr@777	40	product(intx, G1YoungGenSize, 0, \
ysr@777	41	"Size of the G1 young generation, 0 is the adaptive policy") \
ysr@777	42	\
johnc@1186	43	develop(bool, G1Gen, true, \
ysr@777	44	"If true, it will enable the generational G1") \
ysr@777	45	\
tonyp@1319	46	develop(intx, G1GCPercent, 10, \
ysr@777	47	"The desired percent time spent on GC") \
ysr@777	48	\
johnc@1186	49	develop(intx, G1PolicyVerbose, 0, \
ysr@777	50	"The verbosity level on G1 policy decisions") \
ysr@777	51	\
ysr@777	52	develop(bool, G1UseHRIntoRS, true, \
ysr@777	53	"Determines whether the 'advanced' HR Into rem set is used.") \
ysr@777	54	\
ysr@777	55	develop(intx, G1MarkingVerboseLevel, 0, \
ysr@777	56	"Level (0-4) of verboseness of the marking code") \
ysr@777	57	\
tonyp@1180	58	develop(bool, G1VerifyConcMarkPrintReachable, false, \
ysr@777	59	"If conc mark verification fails, print reachable objects") \
ysr@777	60	\
ysr@777	61	develop(bool, G1TraceMarkStackOverflow, false, \
ysr@777	62	"If true, extra debugging code for CM restart for ovflw.") \
ysr@777	63	\
ysr@777	64	develop(intx, G1PausesBtwnConcMark, -1, \
ysr@777	65	"If positive, fixed number of pauses between conc markings") \
ysr@777	66	\
johnc@1186	67	diagnostic(bool, G1SummarizeConcurrentMark, false, \
ysr@777	68	"Summarize concurrent mark info") \
ysr@777	69	\
johnc@1186	70	diagnostic(bool, G1SummarizeRSetStats, false, \
ysr@777	71	"Summarize remembered set processing info") \
ysr@777	72	\
tonyp@1319	73	diagnostic(intx, G1SummarizeRSetStatsPeriod, 0, \
tonyp@1319	74	"The period (in number of GCs) at which we will generate " \
tonyp@1319	75	"update buffer processing info " \
tonyp@1319	76	"(0 means do not periodically generate this info); " \
tonyp@1319	77	"it also requires -XX:+G1SummarizeRSetStats") \
tonyp@1319	78	\
johnc@1186	79	diagnostic(bool, G1SummarizeZFStats, false, \
ysr@777	80	"Summarize zero-filling info") \
ysr@777	81	\
johnc@1186	82	develop(bool, G1TraceConcurrentRefinement, false, \
ysr@777	83	"Trace G1 concurrent refinement") \
ysr@777	84	\
johnc@1186	85	product(intx, G1MarkStackSize, 2 * 1024 * 1024, \
ysr@777	86	"Size of the mark stack for concurrent marking.") \
ysr@777	87	\
johnc@1186	88	product(intx, G1MarkRegionStackSize, 1024 * 1024, \
ysr@777	89	"Size of the region stack for concurrent marking.") \
ysr@777	90	\
ysr@777	91	develop(bool, G1ConcRefine, true, \
ysr@777	92	"If true, run concurrent rem set refinement for G1") \
ysr@777	93	\
ysr@777	94	develop(intx, G1ConcRefineTargTraversals, 4, \
ysr@777	95	"Number of concurrent refinement we try to achieve") \
ysr@777	96	\
ysr@777	97	develop(intx, G1ConcRefineInitialDelta, 4, \
ysr@777	98	"Number of heap regions of alloc ahead of starting collection " \
ysr@777	99	"pause to start concurrent refinement (initially)") \
ysr@777	100	\
johnc@1186	101	develop(bool, G1SmoothConcRefine, true, \
ysr@777	102	"Attempts to smooth out the overhead of concurrent refinement") \
ysr@777	103	\
ysr@777	104	develop(bool, G1ConcZeroFill, true, \
ysr@777	105	"If true, run concurrent zero-filling thread") \
ysr@777	106	\
ysr@777	107	develop(intx, G1ConcZFMaxRegions, 1, \
ysr@777	108	"Stop zero-filling when # of zf'd regions reaches") \
ysr@777	109	\
ysr@777	110	product(intx, G1SteadyStateUsed, 90, \
ysr@777	111	"If non-0, try to maintain 'used' at this pct (of max)") \
ysr@777	112	\
ysr@777	113	product(intx, G1SteadyStateUsedDelta, 30, \
ysr@777	114	"If G1SteadyStateUsed is non-0, then do pause this number of " \
ysr@777	115	"of percentage points earlier if no marking is in progress.") \
ysr@777	116	\
ysr@777	117	develop(bool, G1SATBBarrierPrintNullPreVals, false, \
ysr@777	118	"If true, count frac of ptr writes with null pre-vals.") \
ysr@777	119	\
ysr@777	120	product(intx, G1SATBLogBufferSize, 1*K, \
ysr@777	121	"Number of entries in an SATB log buffer.") \
ysr@777	122	\
ysr@777	123	product(intx, G1SATBProcessCompletedThreshold, 20, \
ysr@777	124	"Number of completed buffers that triggers log processing.") \
ysr@777	125	\
ysr@777	126	develop(intx, G1ExtraRegionSurvRate, 33, \
ysr@777	127	"If the young survival rate is S, and there's room left in " \
ysr@777	128	"to-space, we will allow regions whose survival rate is up to " \
ysr@777	129	"S + (1 - S)*X, where X is this parameter (as a fraction.)") \
ysr@777	130	\
ysr@777	131	develop(intx, G1InitYoungSurvRatio, 50, \
ysr@777	132	"Expected Survival Rate for newly allocated bytes") \
ysr@777	133	\
ysr@777	134	develop(bool, G1SATBPrintStubs, false, \
ysr@777	135	"If true, print generated stubs for the SATB barrier") \
ysr@777	136	\
johnc@1186	137	product(intx, G1ExpandByPercentOfAvailable, 20, \
ysr@777	138	"When expanding, % of uncommitted space to claim.") \
ysr@777	139	\
ysr@777	140	develop(bool, G1RSBarrierRegionFilter, true, \
ysr@777	141	"If true, generate region filtering code in RS barrier") \
ysr@777	142	\
ysr@777	143	develop(bool, G1RSBarrierNullFilter, true, \
ysr@777	144	"If true, generate null-pointer filtering code in RS barrier") \
ysr@777	145	\
ysr@777	146	develop(bool, G1PrintCTFilterStats, false, \
ysr@777	147	"If true, print stats on RS filtering effectiveness") \
ysr@777	148	\
iveresov@1051	149	develop(bool, G1DeferredRSUpdate, true, \
iveresov@1051	150	"If true, use deferred RS updates") \
iveresov@1051	151	\
ysr@777	152	develop(bool, G1RSLogCheckCardTable, false, \
ysr@777	153	"If true, verify that no dirty cards remain after RS log " \
ysr@777	154	"processing.") \
ysr@777	155	\
ysr@777	156	develop(bool, G1RSCountHisto, false, \
ysr@777	157	"If true, print a histogram of RS occupancies after each pause") \
ysr@777	158	\
ysr@777	159	develop(intx, G1PrintRegionLivenessInfo, 0, \
ysr@777	160	"When > 0, print the occupancies of the <n> best and worst" \
ysr@777	161	"regions.") \
ysr@777	162	\
ysr@777	163	develop(bool, G1PrintParCleanupStats, false, \
ysr@777	164	"When true, print extra stats about parallel cleanup.") \
ysr@777	165	\
ysr@777	166	develop(bool, G1DisablePreBarrier, false, \
ysr@777	167	"Disable generation of pre-barrier (i.e., marking barrier) ") \
ysr@777	168	\
ysr@777	169	develop(bool, G1DisablePostBarrier, false, \
ysr@777	170	"Disable generation of post-barrier (i.e., RS barrier) ") \
ysr@777	171	\
tonyp@1318	172	product(intx, G1UpdateBufferSize, 256, \
tonyp@1318	173	"Size of an update buffer") \
tonyp@1318	174	\
tonyp@1318	175	product(intx, G1UpdateBufferQueueProcessingThreshold, 5, \
tonyp@1318	176	"Number of enqueued update buffers that will " \
tonyp@1318	177	"trigger concurrent processing") \
tonyp@1318	178	\
tonyp@1318	179	product(intx, G1UpdateBufferQueueMaxLength, 30, \
tonyp@1318	180	"Maximum number of enqueued update buffers before mutator " \
tonyp@1318	181	"threads start processing new ones instead of enqueueing them") \
ysr@777	182	\
ysr@777	183	develop(intx, G1ConcRSLogCacheSize, 10, \
ysr@777	184	"Log base 2 of the length of conc RS hot-card cache.") \
ysr@777	185	\
johnc@1186	186	develop(intx, G1ConcRSHotCardLimit, 4, \
ysr@777	187	"The threshold that defines (>=) a hot card.") \
ysr@777	188	\
ysr@777	189	develop(bool, G1PrintOopAppls, false, \
ysr@777	190	"When true, print applications of closures to external locs.") \
ysr@777	191	\
johnc@1186	192	develop(intx, G1LogRSRegionEntries, 7, \
ysr@777	193	"Log_2 of max number of regions for which we keep bitmaps.") \
ysr@777	194	\
ysr@777	195	develop(bool, G1RecordHRRSOops, false, \
ysr@777	196	"When true, record recent calls to rem set operations.") \
ysr@777	197	\
ysr@777	198	develop(bool, G1RecordHRRSEvents, false, \
ysr@777	199	"When true, record recent calls to rem set operations.") \
ysr@777	200	\
ysr@777	201	develop(intx, G1MaxVerifyFailures, -1, \
ysr@777	202	"The maximum number of verification failrues to print. " \
ysr@777	203	"-1 means print all.") \
ysr@777	204	\
ysr@777	205	develop(bool, G1ScrubRemSets, true, \
ysr@777	206	"When true, do RS scrubbing after cleanup.") \
ysr@777	207	\
ysr@777	208	develop(bool, G1RSScrubVerbose, false, \
ysr@777	209	"When true, do RS scrubbing with verbose output.") \
ysr@777	210	\
ysr@777	211	develop(bool, G1YoungSurvRateVerbose, false, \
ysr@777	212	"print out the survival rate of young regions according to age.") \
ysr@777	213	\
ysr@777	214	develop(intx, G1YoungSurvRateNumRegionsSummary, 0, \
ysr@777	215	"the number of regions for which we'll print a surv rate " \
ysr@777	216	"summary.") \
ysr@777	217	\
ysr@777	218	product(bool, G1UseScanOnlyPrefix, false, \
ysr@777	219	"It determines whether the system will calculate an optimum " \
ysr@777	220	"scan-only set.") \
ysr@777	221	\
johnc@1186	222	product(intx, G1MinReservePercent, 10, \
ysr@777	223	"It determines the minimum reserve we should have in the heap " \
ysr@777	224	"to minimize the probability of promotion failure.") \
ysr@777	225	\
johnc@1186	226	diagnostic(bool, G1PrintRegions, false, \
ysr@777	227	"If set G1 will print information on which regions are being " \
ysr@777	228	"allocated and which are reclaimed.") \
ysr@777	229	\
ysr@777	230	develop(bool, G1HRRSUseSparseTable, true, \
ysr@777	231	"When true, use sparse table to save space.") \
ysr@777	232	\
ysr@777	233	develop(bool, G1HRRSFlushLogBuffersOnVerify, false, \
ysr@777	234	"Forces flushing of log buffers before verification.") \
ysr@777	235	\
johnc@1186	236	product(bool, G1UseSurvivorSpaces, true, \
apetrusenko@980	237	"When true, use survivor space.") \
apetrusenko@980	238	\
johnc@1186	239	develop(bool, G1FixedTenuringThreshold, false, \
apetrusenko@980	240	"When set, G1 will not adjust the tenuring threshold") \
apetrusenko@980	241	\
johnc@1186	242	develop(bool, G1FixedEdenSize, false, \
apetrusenko@980	243	"When set, G1 will not allocate unused survivor space regions") \
apetrusenko@980	244	\
johnc@1186	245	develop(uintx, G1FixedSurvivorSpaceSize, 0, \
apetrusenko@980	246	"If non-0 is the size of the G1 survivor space, " \
tonyp@1073	247	"otherwise SurvivorRatio is used to determine the size") \
tonyp@1073	248	\
johnc@1186	249	experimental(bool, G1ParallelRSetUpdatingEnabled, false, \
tonyp@1073	250	"Enables the parallelization of remembered set updating " \
tonyp@1073	251	"during evacuation pauses") \
tonyp@1073	252	\
johnc@1186	253	experimental(bool, G1ParallelRSetScanningEnabled, false, \
tonyp@1073	254	"Enables the parallelization of remembered set scanning " \
iveresov@1229	255	"during evacuation pauses") \
iveresov@1229	256	\
iveresov@1229	257	product(uintx, G1ParallelRSetThreads, 0, \
iveresov@1229	258	"If non-0 is the number of parallel rem set update threads, " \
johnc@1325	259	"otherwise the value is determined ergonomically.") \
johnc@1325	260	\
johnc@1325	261	develop(intx, G1CardCountCacheExpandThreshold, 16, \
johnc@1325	262	"Expand the card count cache if the number of collisions for " \
johnc@1325	263	"a particular entry exceeds this value.")
ysr@777	264
ysr@785	265	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)