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src/share/vm/gc_implementation/g1/g1_globals.hpp@3bddbf0f57d6 (annotated)

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

Fri, 09 Sep 2011 05:20:58 -0400

author

tonyp

date

Fri, 09 Sep 2011 05:20:58 -0400

changeset 3121

3bddbf0f57d6

parent 3119

4f41766176cf

child 3184

246daf2c601d

permissions

-rw-r--r--

7087717: G1: make the G1PrintRegionLivenessInfo parameter diagnostic
Reviewed-by: brutisso, 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	\
ysr@777	42	\
johnc@1186	43	develop(intx, G1PolicyVerbose, 0, \
ysr@777	44	"The verbosity level on G1 policy decisions") \
ysr@777	45	\
ysr@777	46	develop(intx, G1MarkingVerboseLevel, 0, \
ysr@777	47	"Level (0-4) of verboseness of the marking code") \
ysr@777	48	\
tonyp@1479	49	develop(bool, G1PrintReachableAtInitialMark, false, \
tonyp@1479	50	"Reachable object dump at the initial mark pause") \
tonyp@1479	51	\
tonyp@1479	52	develop(bool, G1VerifyDuringGCPrintReachable, false, \
tonyp@1479	53	"If conc mark verification fails, dump reachable objects") \
tonyp@1479	54	\
tonyp@1479	55	develop(ccstr, G1PrintReachableBaseFile, NULL, \
tonyp@1479	56	"The base file name for the reachable object dumps") \
ysr@777	57	\
ysr@777	58	develop(bool, G1TraceMarkStackOverflow, false, \
ysr@777	59	"If true, extra debugging code for CM restart for ovflw.") \
ysr@777	60	\
ysr@777	61	develop(intx, G1PausesBtwnConcMark, -1, \
ysr@777	62	"If positive, fixed number of pauses between conc markings") \
ysr@777	63	\
tonyp@1717	64	diagnostic(bool, G1SummarizeConcMark, false, \
ysr@777	65	"Summarize concurrent mark info") \
ysr@777	66	\
johnc@1186	67	diagnostic(bool, G1SummarizeRSetStats, false, \
ysr@777	68	"Summarize remembered set processing info") \
ysr@777	69	\
tonyp@1319	70	diagnostic(intx, G1SummarizeRSetStatsPeriod, 0, \
tonyp@1319	71	"The period (in number of GCs) at which we will generate " \
tonyp@1319	72	"update buffer processing info " \
tonyp@1319	73	"(0 means do not periodically generate this info); " \
tonyp@1319	74	"it also requires -XX:+G1SummarizeRSetStats") \
tonyp@1319	75	\
tonyp@1717	76	diagnostic(bool, G1TraceConcRefinement, false, \
ysr@777	77	"Trace G1 concurrent refinement") \
ysr@777	78	\
johnc@1186	79	product(intx, G1MarkRegionStackSize, 1024 * 1024, \
ysr@777	80	"Size of the region stack for concurrent marking.") \
ysr@777	81	\
johnc@2494	82	product(double, G1ConcMarkStepDurationMillis, 10.0, \
johnc@2494	83	"Target duration of individual concurrent marking steps " \
johnc@2494	84	"in milliseconds.") \
johnc@2494	85	\
johnc@2494	86	product(intx, G1RefProcDrainInterval, 10, \
johnc@2494	87	"The number of discovered reference objects to process before " \
johnc@2494	88	"draining concurrent marking work queues.") \
johnc@2494	89	\
johnc@2781	90	experimental(bool, G1UseConcMarkReferenceProcessing, true, \
johnc@2718	91	"If true, enable reference discovery during concurrent " \
johnc@2781	92	"marking and reference processing at the end of remark.") \
ysr@777	93	\
tonyp@1717	94	product(intx, G1SATBBufferSize, 1*K, \
ysr@777	95	"Number of entries in an SATB log buffer.") \
ysr@777	96	\
tonyp@1717	97	develop(intx, G1SATBProcessCompletedThreshold, 20, \
ysr@777	98	"Number of completed buffers that triggers log processing.") \
ysr@777	99	\
tonyp@2469	100	product(uintx, G1SATBBufferEnqueueingThresholdPercent, 60, \
tonyp@2469	101	"Before enqueueing them, each mutator thread tries to do some " \
tonyp@2469	102	"filtering on the SATB buffers it generates. If post-filtering " \
tonyp@2469	103	"the percentage of retained entries is over this threshold " \
tonyp@2469	104	"the buffer will be enqueued for processing. A value of 0 " \
tonyp@2469	105	"specifies that mutator threads should not do such filtering.") \
tonyp@2469	106	\
ysr@777	107	develop(intx, G1ExtraRegionSurvRate, 33, \
ysr@777	108	"If the young survival rate is S, and there's room left in " \
ysr@777	109	"to-space, we will allow regions whose survival rate is up to " \
ysr@777	110	"S + (1 - S)*X, where X is this parameter (as a fraction.)") \
ysr@777	111	\
ysr@777	112	develop(intx, G1InitYoungSurvRatio, 50, \
ysr@777	113	"Expected Survival Rate for newly allocated bytes") \
ysr@777	114	\
ysr@777	115	develop(bool, G1SATBPrintStubs, false, \
ysr@777	116	"If true, print generated stubs for the SATB barrier") \
ysr@777	117	\
tonyp@1717	118	experimental(intx, G1ExpandByPercentOfAvailable, 20, \
ysr@777	119	"When expanding, % of uncommitted space to claim.") \
ysr@777	120	\
ysr@777	121	develop(bool, G1RSBarrierRegionFilter, true, \
ysr@777	122	"If true, generate region filtering code in RS barrier") \
ysr@777	123	\
ysr@777	124	develop(bool, G1RSBarrierNullFilter, true, \
ysr@777	125	"If true, generate null-pointer filtering code in RS barrier") \
ysr@777	126	\
iveresov@1051	127	develop(bool, G1DeferredRSUpdate, true, \
iveresov@1051	128	"If true, use deferred RS updates") \
iveresov@1051	129	\
ysr@777	130	develop(bool, G1RSLogCheckCardTable, false, \
ysr@777	131	"If true, verify that no dirty cards remain after RS log " \
ysr@777	132	"processing.") \
ysr@777	133	\
ysr@777	134	develop(bool, G1RSCountHisto, false, \
ysr@777	135	"If true, print a histogram of RS occupancies after each pause") \
ysr@777	136	\
tonyp@3121	137	diagnostic(bool, G1PrintRegionLivenessInfo, false, \
tonyp@3121	138	"Prints the liveness information for all regions in the heap " \
tonyp@3121	139	"at the end of a marking cycle.") \
ysr@777	140	\
ysr@777	141	develop(bool, G1PrintParCleanupStats, false, \
ysr@777	142	"When true, print extra stats about parallel cleanup.") \
ysr@777	143	\
tonyp@1318	144	product(intx, G1UpdateBufferSize, 256, \
tonyp@1318	145	"Size of an update buffer") \
tonyp@1318	146	\
tonyp@1717	147	product(intx, G1ConcRefinementYellowZone, 0, \
tonyp@1318	148	"Number of enqueued update buffers that will " \
iveresov@1546	149	"trigger concurrent processing. Will be selected ergonomically " \
iveresov@1546	150	"by default.") \
tonyp@1318	151	\
tonyp@1717	152	product(intx, G1ConcRefinementRedZone, 0, \
tonyp@1318	153	"Maximum number of enqueued update buffers before mutator " \
iveresov@1546	154	"threads start processing new ones instead of enqueueing them. " \
iveresov@1546	155	"Will be selected ergonomically by default. Zero will disable " \
iveresov@1546	156	"concurrent processing.") \
iveresov@1546	157	\
tonyp@1717	158	product(intx, G1ConcRefinementGreenZone, 0, \
iveresov@1546	159	"The number of update buffers that are left in the queue by the " \
iveresov@1546	160	"concurrent processing threads. Will be selected ergonomically " \
iveresov@1546	161	"by default.") \
iveresov@1546	162	\
tonyp@1717	163	product(intx, G1ConcRefinementServiceIntervalMillis, 300, \
iveresov@1546	164	"The last concurrent refinement thread wakes up every " \
iveresov@1546	165	"specified number of milliseconds to do miscellaneous work.") \
iveresov@1546	166	\
tonyp@1717	167	product(intx, G1ConcRefinementThresholdStep, 0, \
iveresov@1546	168	"Each time the rset update queue increases by this amount " \
iveresov@1546	169	"activate the next refinement thread if available. " \
iveresov@1546	170	"Will be selected ergonomically by default.") \
iveresov@1546	171	\
tonyp@1717	172	product(intx, G1RSetUpdatingPauseTimePercent, 10, \
iveresov@1546	173	"A target percentage of time that is allowed to be spend on " \
iveresov@1546	174	"process RS update buffers during the collection pause.") \
iveresov@1546	175	\
tonyp@1717	176	product(bool, G1UseAdaptiveConcRefinement, true, \
iveresov@1546	177	"Select green, yellow and red zones adaptively to meet the " \
iveresov@1546	178	"the pause requirements.") \
ysr@777	179	\
ysr@777	180	develop(intx, G1ConcRSLogCacheSize, 10, \
ysr@777	181	"Log base 2 of the length of conc RS hot-card cache.") \
ysr@777	182	\
johnc@1186	183	develop(intx, G1ConcRSHotCardLimit, 4, \
ysr@777	184	"The threshold that defines (>=) a hot card.") \
ysr@777	185	\
johnc@2713	186	develop(intx, G1MaxHotCardCountSizePercent, 25, \
johnc@2713	187	"The maximum size of the hot card count cache as a " \
johnc@2713	188	"percentage of the number of cards for the maximum heap.") \
johnc@2713	189	\
ysr@777	190	develop(bool, G1PrintOopAppls, false, \
ysr@777	191	"When true, print applications of closures to external locs.") \
ysr@777	192	\
iveresov@1696	193	develop(intx, G1RSetRegionEntriesBase, 256, \
iveresov@1696	194	"Max number of regions in a fine-grain table per MB.") \
iveresov@1696	195	\
iveresov@1696	196	product(intx, G1RSetRegionEntries, 0, \
iveresov@1696	197	"Max number of regions for which we keep bitmaps." \
iveresov@1696	198	"Will be set ergonomically by default") \
iveresov@1696	199	\
iveresov@1696	200	develop(intx, G1RSetSparseRegionEntriesBase, 4, \
iveresov@1696	201	"Max number of entries per region in a sparse table " \
iveresov@1696	202	"per MB.") \
iveresov@1696	203	\
iveresov@1696	204	product(intx, G1RSetSparseRegionEntries, 0, \
iveresov@1696	205	"Max number of entries per region in a sparse table." \
iveresov@1696	206	"Will be set ergonomically by default.") \
ysr@777	207	\
ysr@777	208	develop(bool, G1RecordHRRSOops, false, \
ysr@777	209	"When true, record recent calls to rem set operations.") \
ysr@777	210	\
ysr@777	211	develop(bool, G1RecordHRRSEvents, false, \
ysr@777	212	"When true, record recent calls to rem set operations.") \
ysr@777	213	\
ysr@777	214	develop(intx, G1MaxVerifyFailures, -1, \
ysr@777	215	"The maximum number of verification failrues to print. " \
ysr@777	216	"-1 means print all.") \
ysr@777	217	\
ysr@777	218	develop(bool, G1ScrubRemSets, true, \
ysr@777	219	"When true, do RS scrubbing after cleanup.") \
ysr@777	220	\
ysr@777	221	develop(bool, G1RSScrubVerbose, false, \
ysr@777	222	"When true, do RS scrubbing with verbose output.") \
ysr@777	223	\
ysr@777	224	develop(bool, G1YoungSurvRateVerbose, false, \
ysr@777	225	"print out the survival rate of young regions according to age.") \
ysr@777	226	\
ysr@777	227	develop(intx, G1YoungSurvRateNumRegionsSummary, 0, \
ysr@777	228	"the number of regions for which we'll print a surv rate " \
ysr@777	229	"summary.") \
ysr@777	230	\
tonyp@3119	231	product(uintx, G1ReservePercent, 10, \
ysr@777	232	"It determines the minimum reserve we should have in the heap " \
ysr@777	233	"to minimize the probability of promotion failure.") \
ysr@777	234	\
tonyp@1717	235	diagnostic(bool, G1PrintHeapRegions, false, \
ysr@777	236	"If set G1 will print information on which regions are being " \
ysr@777	237	"allocated and which are reclaimed.") \
ysr@777	238	\
ysr@777	239	develop(bool, G1HRRSUseSparseTable, true, \
ysr@777	240	"When true, use sparse table to save space.") \
ysr@777	241	\
ysr@777	242	develop(bool, G1HRRSFlushLogBuffersOnVerify, false, \
ysr@777	243	"Forces flushing of log buffers before verification.") \
ysr@777	244	\
ysr@1522	245	develop(bool, G1FailOnFPError, false, \
ysr@1522	246	"When set, G1 will fail when it encounters an FP 'error', " \
ysr@1522	247	"so as to allow debugging") \
ysr@1522	248	\
tonyp@1377	249	product(uintx, G1HeapRegionSize, 0, \
tonyp@1377	250	"Size of the G1 regions.") \
tonyp@1377	251	\
tonyp@1792	252	experimental(bool, G1UseParallelRSetUpdating, true, \
tonyp@1073	253	"Enables the parallelization of remembered set updating " \
tonyp@1073	254	"during evacuation pauses") \
tonyp@1073	255	\
tonyp@1792	256	experimental(bool, G1UseParallelRSetScanning, true, \
tonyp@1073	257	"Enables the parallelization of remembered set scanning " \
iveresov@1229	258	"during evacuation pauses") \
iveresov@1229	259	\
tonyp@1717	260	product(uintx, G1ConcRefinementThreads, 0, \
iveresov@1229	261	"If non-0 is the number of parallel rem set update threads, " \
johnc@1325	262	"otherwise the value is determined ergonomically.") \
johnc@1325	263	\
johnc@1325	264	develop(intx, G1CardCountCacheExpandThreshold, 16, \
johnc@1325	265	"Expand the card count cache if the number of collisions for " \
apetrusenko@1375	266	"a particular entry exceeds this value.") \
apetrusenko@1375	267	\
apetrusenko@1375	268	develop(bool, G1VerifyCTCleanup, false, \
ysr@1629	269	"Verify card table cleanup.") \
ysr@1629	270	\
iveresov@1696	271	product(uintx, G1RSetScanBlockSize, 64, \
iveresov@1696	272	"Size of a work unit of cards claimed by a worker thread" \
iveresov@1696	273	"during RSet scanning.") \
iveresov@1696	274	\
tonyp@2472	275	develop(uintx, G1SecondaryFreeListAppendLength, 5, \
tonyp@2472	276	"The number of regions we will add to the secondary free list " \
tonyp@2472	277	"at every append operation") \
tonyp@2472	278	\
tonyp@2472	279	develop(bool, G1ConcRegionFreeingVerbose, false, \
tonyp@2472	280	"Enables verboseness during concurrent region freeing") \
tonyp@2472	281	\
tonyp@2472	282	develop(bool, G1StressConcRegionFreeing, false, \
tonyp@2472	283	"It stresses the concurrent region freeing operation") \
tonyp@2472	284	\
tonyp@2472	285	develop(uintx, G1StressConcRegionFreeingDelayMillis, 0, \
tonyp@2472	286	"Artificial delay during concurrent region freeing") \
tonyp@2472	287	\
tonyp@2817	288	develop(uintx, G1DummyRegionsPerGC, 0, \
tonyp@2817	289	"The number of dummy regions G1 will allocate at the end of " \
tonyp@2817	290	"each evacuation pause in order to artificially fill up the " \
tonyp@2817	291	"heap and stress the marking implementation.") \
tonyp@2817	292	\
johnc@2504	293	develop(bool, ReduceInitialCardMarksForG1, false, \
ysr@1629	294	"When ReduceInitialCardMarks is true, this flag setting " \
johnc@2504	295	" controls whether G1 allows the RICM optimization") \
johnc@2504	296	\
johnc@2504	297	develop(bool, G1ExitOnExpansionFailure, false, \
johnc@2504	298	"Raise a fatal VM exit out of memory failure in the event " \
tonyp@2848	299	" that heap expansion fails due to running out of swap.") \
tonyp@2848	300	\
tonyp@2848	301	develop(uintx, G1ConcMarkForceOverflow, 0, \
tonyp@2848	302	"The number of times we'll force an overflow during " \
tonyp@2848	303	"concurrent marking")
ysr@777	304
ysr@785	305	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	306
stefank@2314	307	#endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1_GLOBALS_HPP