Mercurial > hg > graal-compiler
annotate src/share/vm/gc_implementation/g1/g1_globals.hpp @ 2431:02f49b66361a
7026932: G1: No need to abort VM when card count cache expansion fails
Summary: Manage allocation/freeing of the card cache counts and epochs arrays directly so that an allocation failure while attempting to expand these arrays does not abort the JVM. Failure to expand these arrays is not fatal.
Reviewed-by: iveresov, tonyp
author | johnc |
---|---|
date | Mon, 28 Mar 2011 10:58:54 -0700 |
parents | c33825b68624 |
children | 371bbc844bf1 |
rev | line source |
---|---|
342 | 1 /* |
2149 | 2 * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved. |
342 | 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 * | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1394
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1394
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1394
diff
changeset
|
21 * questions. |
342 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1_GLOBALS_HPP |
26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1_GLOBALS_HPP | |
27 | |
28 #include "runtime/globals.hpp" | |
29 | |
342 | 30 // |
31 // Defines all globals flags used by the garbage-first compiler. | |
32 // | |
33 | |
350
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
342
diff
changeset
|
34 #define G1_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw) \ |
342 | 35 \ |
751 | 36 product(intx, G1ConfidencePercent, 50, \ |
342 | 37 "Confidence level for MMU/pause predictions") \ |
38 \ | |
884
83b687ce3090
6866591: G1: print update buffer processing stats more often
tonyp
parents:
883
diff
changeset
|
39 develop(intx, G1MarkingOverheadPercent, 0, \ |
342 | 40 "Overhead of concurrent marking") \ |
41 \ | |
751 | 42 develop(bool, G1Gen, true, \ |
342 | 43 "If true, it will enable the generational G1") \ |
44 \ | |
751 | 45 develop(intx, G1PolicyVerbose, 0, \ |
342 | 46 "The verbosity level on G1 policy decisions") \ |
47 \ | |
48 develop(intx, G1MarkingVerboseLevel, 0, \ | |
49 "Level (0-4) of verboseness of the marking code") \ | |
50 \ | |
1044 | 51 develop(bool, G1PrintReachableAtInitialMark, false, \ |
52 "Reachable object dump at the initial mark pause") \ | |
53 \ | |
54 develop(bool, G1VerifyDuringGCPrintReachable, false, \ | |
55 "If conc mark verification fails, dump reachable objects") \ | |
56 \ | |
57 develop(ccstr, G1PrintReachableBaseFile, NULL, \ | |
58 "The base file name for the reachable object dumps") \ | |
342 | 59 \ |
60 develop(bool, G1TraceMarkStackOverflow, false, \ | |
61 "If true, extra debugging code for CM restart for ovflw.") \ | |
62 \ | |
63 develop(intx, G1PausesBtwnConcMark, -1, \ | |
64 "If positive, fixed number of pauses between conc markings") \ | |
65 \ | |
1282 | 66 diagnostic(bool, G1SummarizeConcMark, false, \ |
342 | 67 "Summarize concurrent mark info") \ |
68 \ | |
751 | 69 diagnostic(bool, G1SummarizeRSetStats, false, \ |
342 | 70 "Summarize remembered set processing info") \ |
71 \ | |
884
83b687ce3090
6866591: G1: print update buffer processing stats more often
tonyp
parents:
883
diff
changeset
|
72 diagnostic(intx, G1SummarizeRSetStatsPeriod, 0, \ |
83b687ce3090
6866591: G1: print update buffer processing stats more often
tonyp
parents:
883
diff
changeset
|
73 "The period (in number of GCs) at which we will generate " \ |
83b687ce3090
6866591: G1: print update buffer processing stats more often
tonyp
parents:
883
diff
changeset
|
74 "update buffer processing info " \ |
83b687ce3090
6866591: G1: print update buffer processing stats more often
tonyp
parents:
883
diff
changeset
|
75 "(0 means do not periodically generate this info); " \ |
83b687ce3090
6866591: G1: print update buffer processing stats more often
tonyp
parents:
883
diff
changeset
|
76 "it also requires -XX:+G1SummarizeRSetStats") \ |
83b687ce3090
6866591: G1: print update buffer processing stats more often
tonyp
parents:
883
diff
changeset
|
77 \ |
1282 | 78 diagnostic(bool, G1TraceConcRefinement, false, \ |
342 | 79 "Trace G1 concurrent refinement") \ |
80 \ | |
751 | 81 product(intx, G1MarkRegionStackSize, 1024 * 1024, \ |
342 | 82 "Size of the region stack for concurrent marking.") \ |
83 \ | |
2174
234761c55641
6608385: G1: need to support parallel reference processing
johnc
parents:
2152
diff
changeset
|
84 product(double, G1ConcMarkStepDurationMillis, 10.0, \ |
234761c55641
6608385: G1: need to support parallel reference processing
johnc
parents:
2152
diff
changeset
|
85 "Target duration of individual concurrent marking steps " \ |
234761c55641
6608385: G1: need to support parallel reference processing
johnc
parents:
2152
diff
changeset
|
86 "in milliseconds.") \ |
234761c55641
6608385: G1: need to support parallel reference processing
johnc
parents:
2152
diff
changeset
|
87 \ |
234761c55641
6608385: G1: need to support parallel reference processing
johnc
parents:
2152
diff
changeset
|
88 product(intx, G1RefProcDrainInterval, 10, \ |
234761c55641
6608385: G1: need to support parallel reference processing
johnc
parents:
2152
diff
changeset
|
89 "The number of discovered reference objects to process before " \ |
234761c55641
6608385: G1: need to support parallel reference processing
johnc
parents:
2152
diff
changeset
|
90 "draining concurrent marking work queues.") \ |
234761c55641
6608385: G1: need to support parallel reference processing
johnc
parents:
2152
diff
changeset
|
91 \ |
342 | 92 develop(bool, G1SATBBarrierPrintNullPreVals, false, \ |
93 "If true, count frac of ptr writes with null pre-vals.") \ | |
94 \ | |
1282 | 95 product(intx, G1SATBBufferSize, 1*K, \ |
342 | 96 "Number of entries in an SATB log buffer.") \ |
97 \ | |
1282 | 98 develop(intx, G1SATBProcessCompletedThreshold, 20, \ |
342 | 99 "Number of completed buffers that triggers log processing.") \ |
100 \ | |
2149 | 101 product(uintx, G1SATBBufferEnqueueingThresholdPercent, 60, \ |
102 "Before enqueueing them, each mutator thread tries to do some " \ | |
103 "filtering on the SATB buffers it generates. If post-filtering " \ | |
104 "the percentage of retained entries is over this threshold " \ | |
105 "the buffer will be enqueued for processing. A value of 0 " \ | |
106 "specifies that mutator threads should not do such filtering.") \ | |
107 \ | |
342 | 108 develop(intx, G1ExtraRegionSurvRate, 33, \ |
109 "If the young survival rate is S, and there's room left in " \ | |
110 "to-space, we will allow regions whose survival rate is up to " \ | |
111 "S + (1 - S)*X, where X is this parameter (as a fraction.)") \ | |
112 \ | |
113 develop(intx, G1InitYoungSurvRatio, 50, \ | |
114 "Expected Survival Rate for newly allocated bytes") \ | |
115 \ | |
116 develop(bool, G1SATBPrintStubs, false, \ | |
117 "If true, print generated stubs for the SATB barrier") \ | |
118 \ | |
1282 | 119 experimental(intx, G1ExpandByPercentOfAvailable, 20, \ |
342 | 120 "When expanding, % of uncommitted space to claim.") \ |
121 \ | |
122 develop(bool, G1RSBarrierRegionFilter, true, \ | |
123 "If true, generate region filtering code in RS barrier") \ | |
124 \ | |
125 develop(bool, G1RSBarrierNullFilter, true, \ | |
126 "If true, generate null-pointer filtering code in RS barrier") \ | |
127 \ | |
128 develop(bool, G1PrintCTFilterStats, false, \ | |
129 "If true, print stats on RS filtering effectiveness") \ | |
130 \ | |
616
4f360ec815ba
6720309: G1: don't synchronously update RSet during evacuation pauses
iveresov
parents:
545
diff
changeset
|
131 develop(bool, G1DeferredRSUpdate, true, \ |
4f360ec815ba
6720309: G1: don't synchronously update RSet during evacuation pauses
iveresov
parents:
545
diff
changeset
|
132 "If true, use deferred RS updates") \ |
4f360ec815ba
6720309: G1: don't synchronously update RSet during evacuation pauses
iveresov
parents:
545
diff
changeset
|
133 \ |
342 | 134 develop(bool, G1RSLogCheckCardTable, false, \ |
135 "If true, verify that no dirty cards remain after RS log " \ | |
136 "processing.") \ | |
137 \ | |
138 develop(bool, G1RSCountHisto, false, \ | |
139 "If true, print a histogram of RS occupancies after each pause") \ | |
140 \ | |
141 develop(intx, G1PrintRegionLivenessInfo, 0, \ | |
142 "When > 0, print the occupancies of the <n> best and worst" \ | |
143 "regions.") \ | |
144 \ | |
145 develop(bool, G1PrintParCleanupStats, false, \ | |
146 "When true, print extra stats about parallel cleanup.") \ | |
147 \ | |
148 develop(bool, G1DisablePreBarrier, false, \ | |
149 "Disable generation of pre-barrier (i.e., marking barrier) ") \ | |
150 \ | |
151 develop(bool, G1DisablePostBarrier, false, \ | |
152 "Disable generation of post-barrier (i.e., RS barrier) ") \ | |
153 \ | |
883
27f6a9b9c311
6864886: G1: rename -XX parameters related to update buffers
tonyp
parents:
845
diff
changeset
|
154 product(intx, G1UpdateBufferSize, 256, \ |
27f6a9b9c311
6864886: G1: rename -XX parameters related to update buffers
tonyp
parents:
845
diff
changeset
|
155 "Size of an update buffer") \ |
27f6a9b9c311
6864886: G1: rename -XX parameters related to update buffers
tonyp
parents:
845
diff
changeset
|
156 \ |
1282 | 157 product(intx, G1ConcRefinementYellowZone, 0, \ |
883
27f6a9b9c311
6864886: G1: rename -XX parameters related to update buffers
tonyp
parents:
845
diff
changeset
|
158 "Number of enqueued update buffers that will " \ |
1111 | 159 "trigger concurrent processing. Will be selected ergonomically " \ |
160 "by default.") \ | |
161 \ | |
1282 | 162 product(intx, G1ConcRefinementRedZone, 0, \ |
1111 | 163 "Maximum number of enqueued update buffers before mutator " \ |
164 "threads start processing new ones instead of enqueueing them. " \ | |
165 "Will be selected ergonomically by default. Zero will disable " \ | |
166 "concurrent processing.") \ | |
167 \ | |
1282 | 168 product(intx, G1ConcRefinementGreenZone, 0, \ |
1111 | 169 "The number of update buffers that are left in the queue by the " \ |
170 "concurrent processing threads. Will be selected ergonomically " \ | |
171 "by default.") \ | |
883
27f6a9b9c311
6864886: G1: rename -XX parameters related to update buffers
tonyp
parents:
845
diff
changeset
|
172 \ |
1282 | 173 product(intx, G1ConcRefinementServiceIntervalMillis, 300, \ |
1111 | 174 "The last concurrent refinement thread wakes up every " \ |
175 "specified number of milliseconds to do miscellaneous work.") \ | |
176 \ | |
1282 | 177 product(intx, G1ConcRefinementThresholdStep, 0, \ |
1111 | 178 "Each time the rset update queue increases by this amount " \ |
179 "activate the next refinement thread if available. " \ | |
180 "Will be selected ergonomically by default.") \ | |
181 \ | |
1282 | 182 product(intx, G1RSetUpdatingPauseTimePercent, 10, \ |
1111 | 183 "A target percentage of time that is allowed to be spend on " \ |
184 "process RS update buffers during the collection pause.") \ | |
185 \ | |
1282 | 186 product(bool, G1UseAdaptiveConcRefinement, true, \ |
1111 | 187 "Select green, yellow and red zones adaptively to meet the " \ |
188 "the pause requirements.") \ | |
342 | 189 \ |
190 develop(intx, G1ConcRSLogCacheSize, 10, \ | |
191 "Log base 2 of the length of conc RS hot-card cache.") \ | |
192 \ | |
751 | 193 develop(intx, G1ConcRSHotCardLimit, 4, \ |
342 | 194 "The threshold that defines (>=) a hot card.") \ |
195 \ | |
2431
02f49b66361a
7026932: G1: No need to abort VM when card count cache expansion fails
johnc
parents:
2188
diff
changeset
|
196 develop(intx, G1MaxHotCardCountSizePercent, 25, \ |
02f49b66361a
7026932: G1: No need to abort VM when card count cache expansion fails
johnc
parents:
2188
diff
changeset
|
197 "The maximum size of the hot card count cache as a " \ |
02f49b66361a
7026932: G1: No need to abort VM when card count cache expansion fails
johnc
parents:
2188
diff
changeset
|
198 "percentage of the number of cards for the maximum heap.") \ |
02f49b66361a
7026932: G1: No need to abort VM when card count cache expansion fails
johnc
parents:
2188
diff
changeset
|
199 \ |
342 | 200 develop(bool, G1PrintOopAppls, false, \ |
201 "When true, print applications of closures to external locs.") \ | |
202 \ | |
1261
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
203 develop(intx, G1RSetRegionEntriesBase, 256, \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
204 "Max number of regions in a fine-grain table per MB.") \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
205 \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
206 product(intx, G1RSetRegionEntries, 0, \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
207 "Max number of regions for which we keep bitmaps." \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
208 "Will be set ergonomically by default") \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
209 \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
210 develop(intx, G1RSetSparseRegionEntriesBase, 4, \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
211 "Max number of entries per region in a sparse table " \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
212 "per MB.") \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
213 \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
214 product(intx, G1RSetSparseRegionEntries, 0, \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
215 "Max number of entries per region in a sparse table." \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
216 "Will be set ergonomically by default.") \ |
342 | 217 \ |
218 develop(bool, G1RecordHRRSOops, false, \ | |
219 "When true, record recent calls to rem set operations.") \ | |
220 \ | |
221 develop(bool, G1RecordHRRSEvents, false, \ | |
222 "When true, record recent calls to rem set operations.") \ | |
223 \ | |
224 develop(intx, G1MaxVerifyFailures, -1, \ | |
225 "The maximum number of verification failrues to print. " \ | |
226 "-1 means print all.") \ | |
227 \ | |
228 develop(bool, G1ScrubRemSets, true, \ | |
229 "When true, do RS scrubbing after cleanup.") \ | |
230 \ | |
231 develop(bool, G1RSScrubVerbose, false, \ | |
232 "When true, do RS scrubbing with verbose output.") \ | |
233 \ | |
234 develop(bool, G1YoungSurvRateVerbose, false, \ | |
235 "print out the survival rate of young regions according to age.") \ | |
236 \ | |
237 develop(intx, G1YoungSurvRateNumRegionsSummary, 0, \ | |
238 "the number of regions for which we'll print a surv rate " \ | |
239 "summary.") \ | |
240 \ | |
1282 | 241 product(intx, G1ReservePercent, 10, \ |
342 | 242 "It determines the minimum reserve we should have in the heap " \ |
243 "to minimize the probability of promotion failure.") \ | |
244 \ | |
1282 | 245 diagnostic(bool, G1PrintHeapRegions, false, \ |
342 | 246 "If set G1 will print information on which regions are being " \ |
247 "allocated and which are reclaimed.") \ | |
248 \ | |
249 develop(bool, G1HRRSUseSparseTable, true, \ | |
250 "When true, use sparse table to save space.") \ | |
251 \ | |
252 develop(bool, G1HRRSFlushLogBuffersOnVerify, false, \ | |
253 "Forces flushing of log buffers before verification.") \ | |
254 \ | |
1087
23b9a8d315fc
6902701: G1: protect debugging code related to 6898948 with a debug flag
ysr
parents:
1044
diff
changeset
|
255 develop(bool, G1FailOnFPError, false, \ |
23b9a8d315fc
6902701: G1: protect debugging code related to 6898948 with a debug flag
ysr
parents:
1044
diff
changeset
|
256 "When set, G1 will fail when it encounters an FP 'error', " \ |
23b9a8d315fc
6902701: G1: protect debugging code related to 6898948 with a debug flag
ysr
parents:
1044
diff
changeset
|
257 "so as to allow debugging") \ |
23b9a8d315fc
6902701: G1: protect debugging code related to 6898948 with a debug flag
ysr
parents:
1044
diff
changeset
|
258 \ |
751 | 259 develop(bool, G1FixedTenuringThreshold, false, \ |
545 | 260 "When set, G1 will not adjust the tenuring threshold") \ |
261 \ | |
751 | 262 develop(bool, G1FixedEdenSize, false, \ |
545 | 263 "When set, G1 will not allocate unused survivor space regions") \ |
264 \ | |
751 | 265 develop(uintx, G1FixedSurvivorSpaceSize, 0, \ |
545 | 266 "If non-0 is the size of the G1 survivor space, " \ |
638
2a5da27ccae9
6816154: G1: introduce flags to enable/disable RSet updating and scanning
tonyp
parents:
616
diff
changeset
|
267 "otherwise SurvivorRatio is used to determine the size") \ |
2a5da27ccae9
6816154: G1: introduce flags to enable/disable RSet updating and scanning
tonyp
parents:
616
diff
changeset
|
268 \ |
942
2c79770d1f6e
6819085: G1: use larger and/or user settable region size
tonyp
parents:
940
diff
changeset
|
269 product(uintx, G1HeapRegionSize, 0, \ |
2c79770d1f6e
6819085: G1: use larger and/or user settable region size
tonyp
parents:
940
diff
changeset
|
270 "Size of the G1 regions.") \ |
2c79770d1f6e
6819085: G1: use larger and/or user settable region size
tonyp
parents:
940
diff
changeset
|
271 \ |
1357
781e29eb8e08
6677708: G1: re-enable parallel RSet updating and scanning
tonyp
parents:
1356
diff
changeset
|
272 experimental(bool, G1UseParallelRSetUpdating, true, \ |
638
2a5da27ccae9
6816154: G1: introduce flags to enable/disable RSet updating and scanning
tonyp
parents:
616
diff
changeset
|
273 "Enables the parallelization of remembered set updating " \ |
2a5da27ccae9
6816154: G1: introduce flags to enable/disable RSet updating and scanning
tonyp
parents:
616
diff
changeset
|
274 "during evacuation pauses") \ |
2a5da27ccae9
6816154: G1: introduce flags to enable/disable RSet updating and scanning
tonyp
parents:
616
diff
changeset
|
275 \ |
1357
781e29eb8e08
6677708: G1: re-enable parallel RSet updating and scanning
tonyp
parents:
1356
diff
changeset
|
276 experimental(bool, G1UseParallelRSetScanning, true, \ |
638
2a5da27ccae9
6816154: G1: introduce flags to enable/disable RSet updating and scanning
tonyp
parents:
616
diff
changeset
|
277 "Enables the parallelization of remembered set scanning " \ |
794 | 278 "during evacuation pauses") \ |
279 \ | |
1282 | 280 product(uintx, G1ConcRefinementThreads, 0, \ |
794 | 281 "If non-0 is the number of parallel rem set update threads, " \ |
890
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
884
diff
changeset
|
282 "otherwise the value is determined ergonomically.") \ |
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
884
diff
changeset
|
283 \ |
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
884
diff
changeset
|
284 develop(intx, G1CardCountCacheExpandThreshold, 16, \ |
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
884
diff
changeset
|
285 "Expand the card count cache if the number of collisions for " \ |
940
8624da129f0b
6841313: G1: dirty cards of survivor regions in parallel
apetrusenko
parents:
936
diff
changeset
|
286 "a particular entry exceeds this value.") \ |
8624da129f0b
6841313: G1: dirty cards of survivor regions in parallel
apetrusenko
parents:
936
diff
changeset
|
287 \ |
8624da129f0b
6841313: G1: dirty cards of survivor regions in parallel
apetrusenko
parents:
936
diff
changeset
|
288 develop(bool, G1VerifyCTCleanup, false, \ |
1194
34fb2662f6c2
6920090: G1: Disable ReduceInitialCardMarks at least until 6920109 is fixed
ysr
parents:
1111
diff
changeset
|
289 "Verify card table cleanup.") \ |
34fb2662f6c2
6920090: G1: Disable ReduceInitialCardMarks at least until 6920109 is fixed
ysr
parents:
1111
diff
changeset
|
290 \ |
1261
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
291 product(uintx, G1RSetScanBlockSize, 64, \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
292 "Size of a work unit of cards claimed by a worker thread" \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
293 "during RSet scanning.") \ |
0414c1049f15
6923991: G1: improve scalability of RSet scanning
iveresov
parents:
1194
diff
changeset
|
294 \ |
2152 | 295 develop(uintx, G1SecondaryFreeListAppendLength, 5, \ |
296 "The number of regions we will add to the secondary free list " \ | |
297 "at every append operation") \ | |
298 \ | |
299 develop(bool, G1ConcRegionFreeingVerbose, false, \ | |
300 "Enables verboseness during concurrent region freeing") \ | |
301 \ | |
302 develop(bool, G1StressConcRegionFreeing, false, \ | |
303 "It stresses the concurrent region freeing operation") \ | |
304 \ | |
305 develop(uintx, G1StressConcRegionFreeingDelayMillis, 0, \ | |
306 "Artificial delay during concurrent region freeing") \ | |
307 \ | |
2188
c33825b68624
6923430: G1: assert(res != 0,"This should have worked.")
johnc
parents:
2174
diff
changeset
|
308 develop(bool, ReduceInitialCardMarksForG1, false, \ |
1194
34fb2662f6c2
6920090: G1: Disable ReduceInitialCardMarks at least until 6920109 is fixed
ysr
parents:
1111
diff
changeset
|
309 "When ReduceInitialCardMarks is true, this flag setting " \ |
2188
c33825b68624
6923430: G1: assert(res != 0,"This should have worked.")
johnc
parents:
2174
diff
changeset
|
310 " controls whether G1 allows the RICM optimization") \ |
c33825b68624
6923430: G1: assert(res != 0,"This should have worked.")
johnc
parents:
2174
diff
changeset
|
311 \ |
c33825b68624
6923430: G1: assert(res != 0,"This should have worked.")
johnc
parents:
2174
diff
changeset
|
312 develop(bool, G1ExitOnExpansionFailure, false, \ |
c33825b68624
6923430: G1: assert(res != 0,"This should have worked.")
johnc
parents:
2174
diff
changeset
|
313 "Raise a fatal VM exit out of memory failure in the event " \ |
c33825b68624
6923430: G1: assert(res != 0,"This should have worked.")
johnc
parents:
2174
diff
changeset
|
314 " that heap expansion fails due to running out of swap.") |
342 | 315 |
350
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
342
diff
changeset
|
316 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) |
1972 | 317 |
318 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1_GLOBALS_HPP |