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src/share/vm/gc_implementation/g1/g1_globals.hpp@0fbdb4381b99 (annotated)

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

Mon, 09 Mar 2009 13:28:46 -0700

author

xdono

date

Mon, 09 Mar 2009 13:28:46 -0700

changeset 1014

0fbdb4381b99

parent 980

58054a18d735

child 1063

7bb995fbd3c0

permissions

-rw-r--r--

6814575: Update copyright year
Summary: Update copyright for files that have been modified in 2009, up to 03/09
Reviewed-by: katleman, tbell, ohair

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	\
tonyp@961	31	product(intx, ParallelGCG1AllocBufferSize, 8*K, \
ysr@777	32	"Size of parallel G1 allocation buffers in to-space.") \
ysr@777	33	\
ysr@777	34	product(intx, G1TimeSliceMS, 500, \
ysr@777	35	"Time slice for MMU specification") \
ysr@777	36	\
ysr@777	37	product(intx, G1MaxPauseTimeMS, 200, \
ysr@777	38	"Max GC time per MMU time slice") \
ysr@777	39	\
ysr@777	40	product(intx, G1ConfidencePerc, 50, \
ysr@777	41	"Confidence level for MMU/pause predictions") \
ysr@777	42	\
ysr@777	43	product(intx, G1MarkingOverheadPerc, 0, \
ysr@777	44	"Overhead of concurrent marking") \
ysr@777	45	\
ysr@777	46	product(bool, G1AccountConcurrentOverhead, false, \
ysr@777	47	"Whether soft real-time compliance in G1 will take into account" \
ysr@777	48	"concurrent overhead") \
ysr@777	49	\
ysr@777	50	product(intx, G1YoungGenSize, 0, \
ysr@777	51	"Size of the G1 young generation, 0 is the adaptive policy") \
ysr@777	52	\
ysr@777	53	product(bool, G1Gen, true, \
ysr@777	54	"If true, it will enable the generational G1") \
ysr@777	55	\
ysr@777	56	develop(intx, G1GCPct, 10, \
ysr@777	57	"The desired percent time spent on GC") \
ysr@777	58	\
ysr@777	59	product(intx, G1PolicyVerbose, 0, \
ysr@777	60	"The verbosity level on G1 policy decisions") \
ysr@777	61	\
ysr@777	62	develop(bool, G1UseHRIntoRS, true, \
ysr@777	63	"Determines whether the 'advanced' HR Into rem set is used.") \
ysr@777	64	\
ysr@777	65	product(bool, G1VerifyRemSet, false, \
ysr@777	66	"If true, verify the rem set functioning at each GC") \
ysr@777	67	\
ysr@777	68	product(bool, G1VerifyConcMark, false, \
ysr@777	69	"If true, verify the conc marking code at full GC time") \
ysr@777	70	\
ysr@777	71	develop(intx, G1MarkingVerboseLevel, 0, \
ysr@777	72	"Level (0-4) of verboseness of the marking code") \
ysr@777	73	\
ysr@777	74	develop(bool, G1VerifyConcMarkPrintReachable, true, \
ysr@777	75	"If conc mark verification fails, print reachable objects") \
ysr@777	76	\
ysr@777	77	develop(bool, G1TraceMarkStackOverflow, false, \
ysr@777	78	"If true, extra debugging code for CM restart for ovflw.") \
ysr@777	79	\
ysr@777	80	product(bool, G1VerifyMarkingInEvac, false, \
ysr@777	81	"If true, verify marking info during evacuation") \
ysr@777	82	\
ysr@777	83	develop(intx, G1PausesBtwnConcMark, -1, \
ysr@777	84	"If positive, fixed number of pauses between conc markings") \
ysr@777	85	\
ysr@777	86	product(intx, G1EfficiencyPctCausesMark, 80, \
ysr@777	87	"The cum gc efficiency since mark fall-off that causes " \
ysr@777	88	"new marking") \
ysr@777	89	\
ysr@777	90	product(bool, TraceConcurrentMark, false, \
ysr@777	91	"Trace concurrent mark") \
ysr@777	92	\
ysr@777	93	product(bool, SummarizeG1ConcMark, false, \
ysr@777	94	"Summarize concurrent mark info") \
ysr@777	95	\
ysr@777	96	product(bool, SummarizeG1RSStats, false, \
ysr@777	97	"Summarize remembered set processing info") \
ysr@777	98	\
ysr@777	99	product(bool, SummarizeG1ZFStats, false, \
ysr@777	100	"Summarize zero-filling info") \
ysr@777	101	\
ysr@777	102	product(bool, TraceG1Refine, false, \
ysr@777	103	"Trace G1 concurrent refinement") \
ysr@777	104	\
ysr@777	105	develop(bool, G1ConcMark, true, \
ysr@777	106	"If true, run concurrent marking for G1") \
ysr@777	107	\
ysr@777	108	product(intx, G1CMStackSize, 2 * 1024 * 1024, \
ysr@777	109	"Size of the mark stack for concurrent marking.") \
ysr@777	110	\
ysr@777	111	product(intx, G1CMRegionStackSize, 1024 * 1024, \
ysr@777	112	"Size of the region stack for concurrent marking.") \
ysr@777	113	\
ysr@777	114	develop(bool, G1ConcRefine, true, \
ysr@777	115	"If true, run concurrent rem set refinement for G1") \
ysr@777	116	\
ysr@777	117	develop(intx, G1ConcRefineTargTraversals, 4, \
ysr@777	118	"Number of concurrent refinement we try to achieve") \
ysr@777	119	\
ysr@777	120	develop(intx, G1ConcRefineInitialDelta, 4, \
ysr@777	121	"Number of heap regions of alloc ahead of starting collection " \
ysr@777	122	"pause to start concurrent refinement (initially)") \
ysr@777	123	\
ysr@777	124	product(bool, G1SmoothConcRefine, true, \
ysr@777	125	"Attempts to smooth out the overhead of concurrent refinement") \
ysr@777	126	\
ysr@777	127	develop(bool, G1ConcZeroFill, true, \
ysr@777	128	"If true, run concurrent zero-filling thread") \
ysr@777	129	\
ysr@777	130	develop(intx, G1ConcZFMaxRegions, 1, \
ysr@777	131	"Stop zero-filling when # of zf'd regions reaches") \
ysr@777	132	\
ysr@777	133	product(intx, G1SteadyStateUsed, 90, \
ysr@777	134	"If non-0, try to maintain 'used' at this pct (of max)") \
ysr@777	135	\
ysr@777	136	product(intx, G1SteadyStateUsedDelta, 30, \
ysr@777	137	"If G1SteadyStateUsed is non-0, then do pause this number of " \
ysr@777	138	"of percentage points earlier if no marking is in progress.") \
ysr@777	139	\
ysr@777	140	develop(bool, G1SATBBarrierPrintNullPreVals, false, \
ysr@777	141	"If true, count frac of ptr writes with null pre-vals.") \
ysr@777	142	\
ysr@777	143	product(intx, G1SATBLogBufferSize, 1*K, \
ysr@777	144	"Number of entries in an SATB log buffer.") \
ysr@777	145	\
ysr@777	146	product(intx, G1SATBProcessCompletedThreshold, 20, \
ysr@777	147	"Number of completed buffers that triggers log processing.") \
ysr@777	148	\
ysr@777	149	develop(intx, G1ExtraRegionSurvRate, 33, \
ysr@777	150	"If the young survival rate is S, and there's room left in " \
ysr@777	151	"to-space, we will allow regions whose survival rate is up to " \
ysr@777	152	"S + (1 - S)*X, where X is this parameter (as a fraction.)") \
ysr@777	153	\
ysr@777	154	develop(intx, G1InitYoungSurvRatio, 50, \
ysr@777	155	"Expected Survival Rate for newly allocated bytes") \
ysr@777	156	\
ysr@777	157	develop(bool, G1SATBPrintStubs, false, \
ysr@777	158	"If true, print generated stubs for the SATB barrier") \
ysr@777	159	\
ysr@777	160	product(intx, G1ExpandByPctOfAvail, 20, \
ysr@777	161	"When expanding, % of uncommitted space to claim.") \
ysr@777	162	\
ysr@777	163	develop(bool, G1RSBarrierRegionFilter, true, \
ysr@777	164	"If true, generate region filtering code in RS barrier") \
ysr@777	165	\
ysr@777	166	develop(bool, G1RSBarrierNullFilter, true, \
ysr@777	167	"If true, generate null-pointer filtering code in RS barrier") \
ysr@777	168	\
ysr@777	169	develop(bool, G1PrintCTFilterStats, false, \
ysr@777	170	"If true, print stats on RS filtering effectiveness") \
ysr@777	171	\
ysr@777	172	develop(bool, G1RSBarrierUseQueue, true, \
ysr@777	173	"If true, use queueing RS barrier") \
ysr@777	174	\
ysr@777	175	develop(bool, G1RSLogCheckCardTable, false, \
ysr@777	176	"If true, verify that no dirty cards remain after RS log " \
ysr@777	177	"processing.") \
ysr@777	178	\
ysr@777	179	product(intx, G1MinPausesBetweenMarks, 2, \
ysr@777	180	"Number of inefficient pauses necessary to trigger marking.") \
ysr@777	181	\
ysr@777	182	product(intx, G1InefficientPausePct, 80, \
ysr@777	183	"Threshold of an 'inefficient' pauses (as % of cum efficiency.") \
ysr@777	184	\
ysr@777	185	product(intx, G1RSPopLimit, 32768, \
ysr@777	186	"Limit that defines popularity. Should go away! XXX") \
ysr@777	187	\
ysr@777	188	develop(bool, G1RSCountHisto, false, \
ysr@777	189	"If true, print a histogram of RS occupancies after each pause") \
ysr@777	190	\
ysr@777	191	product(intx, G1ObjPopLimit, 256, \
ysr@777	192	"Limit that defines popularity for an object.") \
ysr@777	193	\
ysr@777	194	product(bool, G1TraceFileOverwrite, false, \
ysr@777	195	"Allow the trace file to be overwritten") \
ysr@777	196	\
ysr@777	197	develop(intx, G1PrintRegionLivenessInfo, 0, \
ysr@777	198	"When > 0, print the occupancies of the <n> best and worst" \
ysr@777	199	"regions.") \
ysr@777	200	\
ysr@777	201	develop(bool, G1TracePopularity, false, \
ysr@777	202	"When true, provide detailed tracing of popularity.") \
ysr@777	203	\
ysr@777	204	product(bool, G1SummarizePopularity, false, \
ysr@777	205	"When true, provide end-of-run-summarization of popularity.") \
ysr@777	206	\
ysr@777	207	product(intx, G1NumPopularRegions, 1, \
ysr@777	208	"Number of regions reserved to hold popular objects. " \
ysr@777	209	"Should go away later.") \
ysr@777	210	\
ysr@777	211	develop(bool, G1PrintParCleanupStats, false, \
ysr@777	212	"When true, print extra stats about parallel cleanup.") \
ysr@777	213	\
ysr@777	214	product(bool, G1DoAgeCohortChecks, false, \
ysr@777	215	"When true, check well-formedness of age cohort structures.") \
ysr@777	216	\
ysr@777	217	develop(bool, G1DisablePreBarrier, false, \
ysr@777	218	"Disable generation of pre-barrier (i.e., marking barrier) ") \
ysr@777	219	\
ysr@777	220	develop(bool, G1DisablePostBarrier, false, \
ysr@777	221	"Disable generation of post-barrier (i.e., RS barrier) ") \
ysr@777	222	\
ysr@777	223	product(intx, G1DirtyCardQueueMax, 30, \
ysr@777	224	"Maximum number of completed RS buffers before mutator threads " \
ysr@777	225	"start processing them.") \
ysr@777	226	\
ysr@777	227	develop(intx, G1ConcRSLogCacheSize, 10, \
ysr@777	228	"Log base 2 of the length of conc RS hot-card cache.") \
ysr@777	229	\
ysr@777	230	product(bool, G1ConcRSCountTraversals, false, \
ysr@777	231	"If true, gather data about the number of times CR traverses " \
ysr@777	232	"cards ") \
ysr@777	233	\
ysr@777	234	product(intx, G1ConcRSHotCardLimit, 4, \
ysr@777	235	"The threshold that defines (>=) a hot card.") \
ysr@777	236	\
ysr@777	237	develop(bool, G1PrintOopAppls, false, \
ysr@777	238	"When true, print applications of closures to external locs.") \
ysr@777	239	\
ysr@777	240	product(intx, G1LogRSRegionEntries, 7, \
ysr@777	241	"Log_2 of max number of regions for which we keep bitmaps.") \
ysr@777	242	\
ysr@777	243	develop(bool, G1RecordHRRSOops, false, \
ysr@777	244	"When true, record recent calls to rem set operations.") \
ysr@777	245	\
ysr@777	246	develop(bool, G1RecordHRRSEvents, false, \
ysr@777	247	"When true, record recent calls to rem set operations.") \
ysr@777	248	\
ysr@777	249	develop(intx, G1MaxVerifyFailures, -1, \
ysr@777	250	"The maximum number of verification failrues to print. " \
ysr@777	251	"-1 means print all.") \
ysr@777	252	\
ysr@777	253	develop(bool, G1ScrubRemSets, true, \
ysr@777	254	"When true, do RS scrubbing after cleanup.") \
ysr@777	255	\
ysr@777	256	develop(bool, G1RSScrubVerbose, false, \
ysr@777	257	"When true, do RS scrubbing with verbose output.") \
ysr@777	258	\
ysr@777	259	develop(bool, G1YoungSurvRateVerbose, false, \
ysr@777	260	"print out the survival rate of young regions according to age.") \
ysr@777	261	\
ysr@777	262	develop(intx, G1YoungSurvRateNumRegionsSummary, 0, \
ysr@777	263	"the number of regions for which we'll print a surv rate " \
ysr@777	264	"summary.") \
ysr@777	265	\
ysr@777	266	product(bool, G1UseScanOnlyPrefix, false, \
ysr@777	267	"It determines whether the system will calculate an optimum " \
ysr@777	268	"scan-only set.") \
ysr@777	269	\
ysr@777	270	product(intx, G1MinReservePerc, 10, \
ysr@777	271	"It determines the minimum reserve we should have in the heap " \
ysr@777	272	"to minimize the probability of promotion failure.") \
ysr@777	273	\
ysr@777	274	product(bool, G1TraceRegions, false, \
ysr@777	275	"If set G1 will print information on which regions are being " \
ysr@777	276	"allocated and which are reclaimed.") \
ysr@777	277	\
ysr@777	278	develop(bool, G1HRRSUseSparseTable, true, \
ysr@777	279	"When true, use sparse table to save space.") \
ysr@777	280	\
ysr@777	281	develop(bool, G1HRRSFlushLogBuffersOnVerify, false, \
ysr@777	282	"Forces flushing of log buffers before verification.") \
ysr@777	283	\
apetrusenko@980	284	product(bool, G1UseSurvivorSpace, true, \
apetrusenko@980	285	"When true, use survivor space.") \
apetrusenko@980	286	\
apetrusenko@980	287	product(bool, G1FixedTenuringThreshold, false, \
apetrusenko@980	288	"When set, G1 will not adjust the tenuring threshold") \
apetrusenko@980	289	\
apetrusenko@980	290	product(bool, G1FixedEdenSize, false, \
apetrusenko@980	291	"When set, G1 will not allocate unused survivor space regions") \
apetrusenko@980	292	\
apetrusenko@980	293	product(uintx, G1FixedSurvivorSpaceSize, 0, \
apetrusenko@980	294	"If non-0 is the size of the G1 survivor space, " \
apetrusenko@980	295	"otherwise SurvivorRatio is used to determine the size")
ysr@777	296
ysr@785	297	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)