Mercurial > hg > graal-jvmci-8
annotate src/share/vm/gc_implementation/g1/g1_globals.hpp @ 2037:b03260081e9b
7006113: G1: Initialize ReferenceProcessor::_is_alive_non_header field
Summary: Initialize the _is_alive_non_header field of G1's reference processor with an instance of the G1CMIsAliveClosure. This will stop adding reference objects with live referents to the discovered reference lists unnecessarily.
Reviewed-by: tonyp, ysr, jwilhelm, brutisso
author | johnc |
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date | Fri, 17 Dec 2010 11:26:53 -0800 |
parents | f95d63e2154a |
children | 7e37af9d69ef |
rev | line source |
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342 | 1 /* |
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2 * Copyright (c) 2001, 2010, 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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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
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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 \ | |
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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 \ | |
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72 diagnostic(intx, G1SummarizeRSetStatsPeriod, 0, \ |
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73 "The period (in number of GCs) at which we will generate " \ |
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74 "update buffer processing info " \ |
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75 "(0 means do not periodically generate this info); " \ |
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76 "it also requires -XX:+G1SummarizeRSetStats") \ |
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77 \ |
751 | 78 diagnostic(bool, G1SummarizeZFStats, false, \ |
342 | 79 "Summarize zero-filling info") \ |
80 \ | |
1282 | 81 diagnostic(bool, G1TraceConcRefinement, false, \ |
342 | 82 "Trace G1 concurrent refinement") \ |
83 \ | |
751 | 84 product(intx, G1MarkRegionStackSize, 1024 * 1024, \ |
342 | 85 "Size of the region stack for concurrent marking.") \ |
86 \ | |
87 develop(bool, G1ConcZeroFill, true, \ | |
88 "If true, run concurrent zero-filling thread") \ | |
89 \ | |
90 develop(intx, G1ConcZFMaxRegions, 1, \ | |
91 "Stop zero-filling when # of zf'd regions reaches") \ | |
92 \ | |
93 develop(bool, G1SATBBarrierPrintNullPreVals, false, \ | |
94 "If true, count frac of ptr writes with null pre-vals.") \ | |
95 \ | |
1282 | 96 product(intx, G1SATBBufferSize, 1*K, \ |
342 | 97 "Number of entries in an SATB log buffer.") \ |
98 \ | |
1282 | 99 develop(intx, G1SATBProcessCompletedThreshold, 20, \ |
342 | 100 "Number of completed buffers that triggers log processing.") \ |
101 \ | |
102 develop(intx, G1ExtraRegionSurvRate, 33, \ | |
103 "If the young survival rate is S, and there's room left in " \ | |
104 "to-space, we will allow regions whose survival rate is up to " \ | |
105 "S + (1 - S)*X, where X is this parameter (as a fraction.)") \ | |
106 \ | |
107 develop(intx, G1InitYoungSurvRatio, 50, \ | |
108 "Expected Survival Rate for newly allocated bytes") \ | |
109 \ | |
110 develop(bool, G1SATBPrintStubs, false, \ | |
111 "If true, print generated stubs for the SATB barrier") \ | |
112 \ | |
1282 | 113 experimental(intx, G1ExpandByPercentOfAvailable, 20, \ |
342 | 114 "When expanding, % of uncommitted space to claim.") \ |
115 \ | |
116 develop(bool, G1RSBarrierRegionFilter, true, \ | |
117 "If true, generate region filtering code in RS barrier") \ | |
118 \ | |
119 develop(bool, G1RSBarrierNullFilter, true, \ | |
120 "If true, generate null-pointer filtering code in RS barrier") \ | |
121 \ | |
122 develop(bool, G1PrintCTFilterStats, false, \ | |
123 "If true, print stats on RS filtering effectiveness") \ | |
124 \ | |
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125 develop(bool, G1DeferredRSUpdate, true, \ |
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126 "If true, use deferred RS updates") \ |
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127 \ |
342 | 128 develop(bool, G1RSLogCheckCardTable, false, \ |
129 "If true, verify that no dirty cards remain after RS log " \ | |
130 "processing.") \ | |
131 \ | |
132 develop(bool, G1RSCountHisto, false, \ | |
133 "If true, print a histogram of RS occupancies after each pause") \ | |
134 \ | |
135 develop(intx, G1PrintRegionLivenessInfo, 0, \ | |
136 "When > 0, print the occupancies of the <n> best and worst" \ | |
137 "regions.") \ | |
138 \ | |
139 develop(bool, G1PrintParCleanupStats, false, \ | |
140 "When true, print extra stats about parallel cleanup.") \ | |
141 \ | |
142 develop(bool, G1DisablePreBarrier, false, \ | |
143 "Disable generation of pre-barrier (i.e., marking barrier) ") \ | |
144 \ | |
145 develop(bool, G1DisablePostBarrier, false, \ | |
146 "Disable generation of post-barrier (i.e., RS barrier) ") \ | |
147 \ | |
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148 product(intx, G1UpdateBufferSize, 256, \ |
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149 "Size of an update buffer") \ |
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150 \ |
1282 | 151 product(intx, G1ConcRefinementYellowZone, 0, \ |
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152 "Number of enqueued update buffers that will " \ |
1111 | 153 "trigger concurrent processing. Will be selected ergonomically " \ |
154 "by default.") \ | |
155 \ | |
1282 | 156 product(intx, G1ConcRefinementRedZone, 0, \ |
1111 | 157 "Maximum number of enqueued update buffers before mutator " \ |
158 "threads start processing new ones instead of enqueueing them. " \ | |
159 "Will be selected ergonomically by default. Zero will disable " \ | |
160 "concurrent processing.") \ | |
161 \ | |
1282 | 162 product(intx, G1ConcRefinementGreenZone, 0, \ |
1111 | 163 "The number of update buffers that are left in the queue by the " \ |
164 "concurrent processing threads. Will be selected ergonomically " \ | |
165 "by default.") \ | |
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166 \ |
1282 | 167 product(intx, G1ConcRefinementServiceIntervalMillis, 300, \ |
1111 | 168 "The last concurrent refinement thread wakes up every " \ |
169 "specified number of milliseconds to do miscellaneous work.") \ | |
170 \ | |
1282 | 171 product(intx, G1ConcRefinementThresholdStep, 0, \ |
1111 | 172 "Each time the rset update queue increases by this amount " \ |
173 "activate the next refinement thread if available. " \ | |
174 "Will be selected ergonomically by default.") \ | |
175 \ | |
1282 | 176 product(intx, G1RSetUpdatingPauseTimePercent, 10, \ |
1111 | 177 "A target percentage of time that is allowed to be spend on " \ |
178 "process RS update buffers during the collection pause.") \ | |
179 \ | |
1282 | 180 product(bool, G1UseAdaptiveConcRefinement, true, \ |
1111 | 181 "Select green, yellow and red zones adaptively to meet the " \ |
182 "the pause requirements.") \ | |
342 | 183 \ |
184 develop(intx, G1ConcRSLogCacheSize, 10, \ | |
185 "Log base 2 of the length of conc RS hot-card cache.") \ | |
186 \ | |
751 | 187 develop(intx, G1ConcRSHotCardLimit, 4, \ |
342 | 188 "The threshold that defines (>=) a hot card.") \ |
189 \ | |
190 develop(bool, G1PrintOopAppls, false, \ | |
191 "When true, print applications of closures to external locs.") \ | |
192 \ | |
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193 develop(intx, G1RSetRegionEntriesBase, 256, \ |
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194 "Max number of regions in a fine-grain table per MB.") \ |
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195 \ |
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196 product(intx, G1RSetRegionEntries, 0, \ |
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197 "Max number of regions for which we keep bitmaps." \ |
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198 "Will be set ergonomically by default") \ |
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199 \ |
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200 develop(intx, G1RSetSparseRegionEntriesBase, 4, \ |
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201 "Max number of entries per region in a sparse table " \ |
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202 "per MB.") \ |
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203 \ |
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204 product(intx, G1RSetSparseRegionEntries, 0, \ |
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205 "Max number of entries per region in a sparse table." \ |
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206 "Will be set ergonomically by default.") \ |
342 | 207 \ |
208 develop(bool, G1RecordHRRSOops, false, \ | |
209 "When true, record recent calls to rem set operations.") \ | |
210 \ | |
211 develop(bool, G1RecordHRRSEvents, false, \ | |
212 "When true, record recent calls to rem set operations.") \ | |
213 \ | |
214 develop(intx, G1MaxVerifyFailures, -1, \ | |
215 "The maximum number of verification failrues to print. " \ | |
216 "-1 means print all.") \ | |
217 \ | |
218 develop(bool, G1ScrubRemSets, true, \ | |
219 "When true, do RS scrubbing after cleanup.") \ | |
220 \ | |
221 develop(bool, G1RSScrubVerbose, false, \ | |
222 "When true, do RS scrubbing with verbose output.") \ | |
223 \ | |
224 develop(bool, G1YoungSurvRateVerbose, false, \ | |
225 "print out the survival rate of young regions according to age.") \ | |
226 \ | |
227 develop(intx, G1YoungSurvRateNumRegionsSummary, 0, \ | |
228 "the number of regions for which we'll print a surv rate " \ | |
229 "summary.") \ | |
230 \ | |
1282 | 231 product(intx, G1ReservePercent, 10, \ |
342 | 232 "It determines the minimum reserve we should have in the heap " \ |
233 "to minimize the probability of promotion failure.") \ | |
234 \ | |
1282 | 235 diagnostic(bool, G1PrintHeapRegions, false, \ |
342 | 236 "If set G1 will print information on which regions are being " \ |
237 "allocated and which are reclaimed.") \ | |
238 \ | |
239 develop(bool, G1HRRSUseSparseTable, true, \ | |
240 "When true, use sparse table to save space.") \ | |
241 \ | |
242 develop(bool, G1HRRSFlushLogBuffersOnVerify, false, \ | |
243 "Forces flushing of log buffers before verification.") \ | |
244 \ | |
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245 develop(bool, G1FailOnFPError, false, \ |
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246 "When set, G1 will fail when it encounters an FP 'error', " \ |
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247 "so as to allow debugging") \ |
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248 \ |
751 | 249 develop(bool, G1FixedTenuringThreshold, false, \ |
545 | 250 "When set, G1 will not adjust the tenuring threshold") \ |
251 \ | |
751 | 252 develop(bool, G1FixedEdenSize, false, \ |
545 | 253 "When set, G1 will not allocate unused survivor space regions") \ |
254 \ | |
751 | 255 develop(uintx, G1FixedSurvivorSpaceSize, 0, \ |
545 | 256 "If non-0 is the size of the G1 survivor space, " \ |
638
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257 "otherwise SurvivorRatio is used to determine the size") \ |
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258 \ |
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259 product(uintx, G1HeapRegionSize, 0, \ |
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260 "Size of the G1 regions.") \ |
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261 \ |
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262 experimental(bool, G1UseParallelRSetUpdating, true, \ |
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263 "Enables the parallelization of remembered set updating " \ |
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264 "during evacuation pauses") \ |
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265 \ |
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266 experimental(bool, G1UseParallelRSetScanning, true, \ |
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267 "Enables the parallelization of remembered set scanning " \ |
794 | 268 "during evacuation pauses") \ |
269 \ | |
1282 | 270 product(uintx, G1ConcRefinementThreads, 0, \ |
794 | 271 "If non-0 is the number of parallel rem set update threads, " \ |
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272 "otherwise the value is determined ergonomically.") \ |
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273 \ |
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274 develop(intx, G1CardCountCacheExpandThreshold, 16, \ |
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275 "Expand the card count cache if the number of collisions for " \ |
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276 "a particular entry exceeds this value.") \ |
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277 \ |
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278 develop(bool, G1VerifyCTCleanup, false, \ |
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279 "Verify card table cleanup.") \ |
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280 \ |
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281 product(uintx, G1RSetScanBlockSize, 64, \ |
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282 "Size of a work unit of cards claimed by a worker thread" \ |
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283 "during RSet scanning.") \ |
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284 \ |
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285 develop(bool, ReduceInitialCardMarksForG1, false, \ |
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286 "When ReduceInitialCardMarks is true, this flag setting " \ |
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287 " controls whether G1 allows the RICM optimization") |
342 | 288 |
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289 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 | 290 |
291 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1_GLOBALS_HPP |