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src/share/vm/gc_implementation/g1/g1_globals.hpp@f9ec1e4bbb44
src/share/vm/gc_implementation/g1/g1_globals.hpp
Thu, 15 Apr 2010 18:45:30 -0400
- author
- tonyp
- date
- Thu, 15 Apr 2010 18:45:30 -0400
- changeset 1825
- f9ec1e4bbb44
- parent 1792
- 781e29eb8e08
- child 1826
- 79e419e5ea3b
- permissions
- -rw-r--r--
6939027: G1: assertion failure during the concurrent phase of cleanup
Summary: The outgoing region map is not maintained properly and it's causing an assert failure. Given that we don't actually use it, I'm removing it. I'm piggy-backing a small change on this which removes a message that it's printed before a Full GC when DisableExplicitGC is set.
Reviewed-by: apetrusenko, ysr
1 /*
2 * Copyright 2001-2009 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
25 //
26 // Defines all globals flags used by the garbage-first compiler.
27 //
29 #define G1_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw) \
30 \
31 product(intx, G1ParallelGCAllocBufferSize, 8*K, \
32 "Size of parallel G1 allocation buffers in to-space.") \
33 \
34 product(intx, G1ConfidencePercent, 50, \
35 "Confidence level for MMU/pause predictions") \
36 \
37 develop(intx, G1MarkingOverheadPercent, 0, \
38 "Overhead of concurrent marking") \
39 \
40 develop(bool, G1Gen, true, \
41 "If true, it will enable the generational G1") \
42 \
43 develop(intx, G1PolicyVerbose, 0, \
44 "The verbosity level on G1 policy decisions") \
45 \
46 develop(bool, G1UseHRIntoRS, true, \
47 "Determines whether the 'advanced' HR Into rem set is used.") \
48 \
49 develop(intx, G1MarkingVerboseLevel, 0, \
50 "Level (0-4) of verboseness of the marking code") \
51 \
52 develop(bool, G1PrintReachableAtInitialMark, false, \
53 "Reachable object dump at the initial mark pause") \
54 \
55 develop(bool, G1VerifyDuringGCPrintReachable, false, \
56 "If conc mark verification fails, dump reachable objects") \
57 \
58 develop(ccstr, G1PrintReachableBaseFile, NULL, \
59 "The base file name for the reachable object dumps") \
60 \
61 develop(bool, G1TraceMarkStackOverflow, false, \
62 "If true, extra debugging code for CM restart for ovflw.") \
63 \
64 develop(intx, G1PausesBtwnConcMark, -1, \
65 "If positive, fixed number of pauses between conc markings") \
66 \
67 diagnostic(bool, G1SummarizeConcMark, false, \
68 "Summarize concurrent mark info") \
69 \
70 diagnostic(bool, G1SummarizeRSetStats, false, \
71 "Summarize remembered set processing info") \
72 \
73 diagnostic(intx, G1SummarizeRSetStatsPeriod, 0, \
74 "The period (in number of GCs) at which we will generate " \
75 "update buffer processing info " \
76 "(0 means do not periodically generate this info); " \
77 "it also requires -XX:+G1SummarizeRSetStats") \
78 \
79 diagnostic(bool, G1SummarizeZFStats, false, \
80 "Summarize zero-filling info") \
81 \
82 diagnostic(bool, G1TraceConcRefinement, false, \
83 "Trace G1 concurrent refinement") \
84 \
85 product(intx, G1MarkRegionStackSize, 1024 * 1024, \
86 "Size of the region stack for concurrent marking.") \
87 \
88 develop(bool, G1ConcZeroFill, true, \
89 "If true, run concurrent zero-filling thread") \
90 \
91 develop(intx, G1ConcZFMaxRegions, 1, \
92 "Stop zero-filling when # of zf'd regions reaches") \
93 \
94 develop(bool, G1SATBBarrierPrintNullPreVals, false, \
95 "If true, count frac of ptr writes with null pre-vals.") \
96 \
97 product(intx, G1SATBBufferSize, 1*K, \
98 "Number of entries in an SATB log buffer.") \
99 \
100 develop(intx, G1SATBProcessCompletedThreshold, 20, \
101 "Number of completed buffers that triggers log processing.") \
102 \
103 develop(intx, G1ExtraRegionSurvRate, 33, \
104 "If the young survival rate is S, and there's room left in " \
105 "to-space, we will allow regions whose survival rate is up to " \
106 "S + (1 - S)*X, where X is this parameter (as a fraction.)") \
107 \
108 develop(intx, G1InitYoungSurvRatio, 50, \
109 "Expected Survival Rate for newly allocated bytes") \
110 \
111 develop(bool, G1SATBPrintStubs, false, \
112 "If true, print generated stubs for the SATB barrier") \
113 \
114 experimental(intx, G1ExpandByPercentOfAvailable, 20, \
115 "When expanding, % of uncommitted space to claim.") \
116 \
117 develop(bool, G1RSBarrierRegionFilter, true, \
118 "If true, generate region filtering code in RS barrier") \
119 \
120 develop(bool, G1RSBarrierNullFilter, true, \
121 "If true, generate null-pointer filtering code in RS barrier") \
122 \
123 develop(bool, G1PrintCTFilterStats, false, \
124 "If true, print stats on RS filtering effectiveness") \
125 \
126 develop(bool, G1DeferredRSUpdate, true, \
127 "If true, use deferred RS updates") \
128 \
129 develop(bool, G1RSLogCheckCardTable, false, \
130 "If true, verify that no dirty cards remain after RS log " \
131 "processing.") \
132 \
133 develop(bool, G1RSCountHisto, false, \
134 "If true, print a histogram of RS occupancies after each pause") \
135 \
136 develop(intx, G1PrintRegionLivenessInfo, 0, \
137 "When > 0, print the occupancies of the <n> best and worst" \
138 "regions.") \
139 \
140 develop(bool, G1PrintParCleanupStats, false, \
141 "When true, print extra stats about parallel cleanup.") \
142 \
143 develop(bool, G1DisablePreBarrier, false, \
144 "Disable generation of pre-barrier (i.e., marking barrier) ") \
145 \
146 develop(bool, G1DisablePostBarrier, false, \
147 "Disable generation of post-barrier (i.e., RS barrier) ") \
148 \
149 product(intx, G1UpdateBufferSize, 256, \
150 "Size of an update buffer") \
151 \
152 product(intx, G1ConcRefinementYellowZone, 0, \
153 "Number of enqueued update buffers that will " \
154 "trigger concurrent processing. Will be selected ergonomically " \
155 "by default.") \
156 \
157 product(intx, G1ConcRefinementRedZone, 0, \
158 "Maximum number of enqueued update buffers before mutator " \
159 "threads start processing new ones instead of enqueueing them. " \
160 "Will be selected ergonomically by default. Zero will disable " \
161 "concurrent processing.") \
162 \
163 product(intx, G1ConcRefinementGreenZone, 0, \
164 "The number of update buffers that are left in the queue by the " \
165 "concurrent processing threads. Will be selected ergonomically " \
166 "by default.") \
167 \
168 product(intx, G1ConcRefinementServiceIntervalMillis, 300, \
169 "The last concurrent refinement thread wakes up every " \
170 "specified number of milliseconds to do miscellaneous work.") \
171 \
172 product(intx, G1ConcRefinementThresholdStep, 0, \
173 "Each time the rset update queue increases by this amount " \
174 "activate the next refinement thread if available. " \
175 "Will be selected ergonomically by default.") \
176 \
177 product(intx, G1RSetUpdatingPauseTimePercent, 10, \
178 "A target percentage of time that is allowed to be spend on " \
179 "process RS update buffers during the collection pause.") \
180 \
181 product(bool, G1UseAdaptiveConcRefinement, true, \
182 "Select green, yellow and red zones adaptively to meet the " \
183 "the pause requirements.") \
184 \
185 develop(intx, G1ConcRSLogCacheSize, 10, \
186 "Log base 2 of the length of conc RS hot-card cache.") \
187 \
188 develop(intx, G1ConcRSHotCardLimit, 4, \
189 "The threshold that defines (>=) a hot card.") \
190 \
191 develop(bool, G1PrintOopAppls, false, \
192 "When true, print applications of closures to external locs.") \
193 \
194 develop(intx, G1RSetRegionEntriesBase, 256, \
195 "Max number of regions in a fine-grain table per MB.") \
196 \
197 product(intx, G1RSetRegionEntries, 0, \
198 "Max number of regions for which we keep bitmaps." \
199 "Will be set ergonomically by default") \
200 \
201 develop(intx, G1RSetSparseRegionEntriesBase, 4, \
202 "Max number of entries per region in a sparse table " \
203 "per MB.") \
204 \
205 product(intx, G1RSetSparseRegionEntries, 0, \
206 "Max number of entries per region in a sparse table." \
207 "Will be set ergonomically by default.") \
208 \
209 develop(bool, G1RecordHRRSOops, false, \
210 "When true, record recent calls to rem set operations.") \
211 \
212 develop(bool, G1RecordHRRSEvents, false, \
213 "When true, record recent calls to rem set operations.") \
214 \
215 develop(intx, G1MaxVerifyFailures, -1, \
216 "The maximum number of verification failrues to print. " \
217 "-1 means print all.") \
218 \
219 develop(bool, G1ScrubRemSets, true, \
220 "When true, do RS scrubbing after cleanup.") \
221 \
222 develop(bool, G1RSScrubVerbose, false, \
223 "When true, do RS scrubbing with verbose output.") \
224 \
225 develop(bool, G1YoungSurvRateVerbose, false, \
226 "print out the survival rate of young regions according to age.") \
227 \
228 develop(intx, G1YoungSurvRateNumRegionsSummary, 0, \
229 "the number of regions for which we'll print a surv rate " \
230 "summary.") \
231 \
232 develop(bool, G1UseScanOnlyPrefix, false, \
233 "It determines whether the system will calculate an optimum " \
234 "scan-only set.") \
235 \
236 product(intx, G1ReservePercent, 10, \
237 "It determines the minimum reserve we should have in the heap " \
238 "to minimize the probability of promotion failure.") \
239 \
240 diagnostic(bool, G1PrintHeapRegions, false, \
241 "If set G1 will print information on which regions are being " \
242 "allocated and which are reclaimed.") \
243 \
244 develop(bool, G1HRRSUseSparseTable, true, \
245 "When true, use sparse table to save space.") \
246 \
247 develop(bool, G1HRRSFlushLogBuffersOnVerify, false, \
248 "Forces flushing of log buffers before verification.") \
249 \
250 develop(bool, G1FailOnFPError, false, \
251 "When set, G1 will fail when it encounters an FP 'error', " \
252 "so as to allow debugging") \
253 \
254 develop(bool, G1FixedTenuringThreshold, false, \
255 "When set, G1 will not adjust the tenuring threshold") \
256 \
257 develop(bool, G1FixedEdenSize, false, \
258 "When set, G1 will not allocate unused survivor space regions") \
259 \
260 develop(uintx, G1FixedSurvivorSpaceSize, 0, \
261 "If non-0 is the size of the G1 survivor space, " \
262 "otherwise SurvivorRatio is used to determine the size") \
263 \
264 product(bool, G1UseFixedWindowMMUTracker, false, \
265 "If the MMU tracker's memory is full, forget the oldest entry") \
266 \
267 product(uintx, G1HeapRegionSize, 0, \
268 "Size of the G1 regions.") \
269 \
270 experimental(bool, G1UseParallelRSetUpdating, true, \
271 "Enables the parallelization of remembered set updating " \
272 "during evacuation pauses") \
273 \
274 experimental(bool, G1UseParallelRSetScanning, true, \
275 "Enables the parallelization of remembered set scanning " \
276 "during evacuation pauses") \
277 \
278 product(uintx, G1ConcRefinementThreads, 0, \
279 "If non-0 is the number of parallel rem set update threads, " \
280 "otherwise the value is determined ergonomically.") \
281 \
282 develop(intx, G1CardCountCacheExpandThreshold, 16, \
283 "Expand the card count cache if the number of collisions for " \
284 "a particular entry exceeds this value.") \
285 \
286 develop(bool, G1VerifyCTCleanup, false, \
287 "Verify card table cleanup.") \
288 \
289 product(uintx, G1RSetScanBlockSize, 64, \
290 "Size of a work unit of cards claimed by a worker thread" \
291 "during RSet scanning.") \
292 \
293 develop(bool, ReduceInitialCardMarksForG1, false, \
294 "When ReduceInitialCardMarks is true, this flag setting " \
295 " controls whether G1 allows the RICM optimization")
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)
