Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/g1/g1_globals.hpp @ 8039:5e401ef52ec0
8007772: G1: assert(!hr->isHumongous() || mr.start() == hr->bottom()) failed: the start of HeapRegion and MemRegion should be consistent for humongous regions
Summary: In do_marking_step(), we should always give up current region after scanning the object, if the region is humongous.
Reviewed-by: brutisso, jwilhelm, tamao
author | johnc |
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date | Mon, 11 Feb 2013 15:24:48 -0800 |
parents | f64ffbf81af5 |
children | f1fb03a251e9 |
rev | line source |
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342 | 1 /* |
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2 * Copyright (c) 2001, 2013, 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" | |
342 | 29 // |
30 // Defines all globals flags used by the garbage-first compiler. | |
31 // | |
32 | |
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33 #define G1_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw) \ |
342 | 34 \ |
751 | 35 product(intx, G1ConfidencePercent, 50, \ |
342 | 36 "Confidence level for MMU/pause predictions") \ |
37 \ | |
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38 develop(intx, G1MarkingOverheadPercent, 0, \ |
342 | 39 "Overhead of concurrent marking") \ |
40 \ | |
41 develop(intx, G1MarkingVerboseLevel, 0, \ | |
42 "Level (0-4) of verboseness of the marking code") \ | |
43 \ | |
1044 | 44 develop(bool, G1PrintReachableAtInitialMark, false, \ |
45 "Reachable object dump at the initial mark pause") \ | |
46 \ | |
47 develop(bool, G1VerifyDuringGCPrintReachable, false, \ | |
48 "If conc mark verification fails, dump reachable objects") \ | |
49 \ | |
50 develop(ccstr, G1PrintReachableBaseFile, NULL, \ | |
51 "The base file name for the reachable object dumps") \ | |
342 | 52 \ |
53 develop(bool, G1TraceMarkStackOverflow, false, \ | |
54 "If true, extra debugging code for CM restart for ovflw.") \ | |
55 \ | |
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56 develop(bool, G1TraceHeapRegionRememberedSet, false, \ |
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57 "Enables heap region remembered set debug logs") \ |
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58 \ |
1282 | 59 diagnostic(bool, G1SummarizeConcMark, false, \ |
342 | 60 "Summarize concurrent mark info") \ |
61 \ | |
751 | 62 diagnostic(bool, G1SummarizeRSetStats, false, \ |
342 | 63 "Summarize remembered set processing info") \ |
64 \ | |
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65 diagnostic(intx, G1SummarizeRSetStatsPeriod, 0, \ |
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66 "The period (in number of GCs) at which we will generate " \ |
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67 "update buffer processing info " \ |
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68 "(0 means do not periodically generate this info); " \ |
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69 "it also requires -XX:+G1SummarizeRSetStats") \ |
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70 \ |
1282 | 71 diagnostic(bool, G1TraceConcRefinement, false, \ |
342 | 72 "Trace G1 concurrent refinement") \ |
73 \ | |
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74 product(double, G1ConcMarkStepDurationMillis, 10.0, \ |
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75 "Target duration of individual concurrent marking steps " \ |
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76 "in milliseconds.") \ |
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77 \ |
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78 product(intx, G1RefProcDrainInterval, 10, \ |
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79 "The number of discovered reference objects to process before " \ |
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80 "draining concurrent marking work queues.") \ |
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81 \ |
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82 experimental(bool, G1UseConcMarkReferenceProcessing, true, \ |
2436 | 83 "If true, enable reference discovery during concurrent " \ |
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84 "marking and reference processing at the end of remark.") \ |
342 | 85 \ |
1282 | 86 product(intx, G1SATBBufferSize, 1*K, \ |
342 | 87 "Number of entries in an SATB log buffer.") \ |
88 \ | |
1282 | 89 develop(intx, G1SATBProcessCompletedThreshold, 20, \ |
342 | 90 "Number of completed buffers that triggers log processing.") \ |
91 \ | |
2149 | 92 product(uintx, G1SATBBufferEnqueueingThresholdPercent, 60, \ |
93 "Before enqueueing them, each mutator thread tries to do some " \ | |
94 "filtering on the SATB buffers it generates. If post-filtering " \ | |
95 "the percentage of retained entries is over this threshold " \ | |
96 "the buffer will be enqueued for processing. A value of 0 " \ | |
97 "specifies that mutator threads should not do such filtering.") \ | |
98 \ | |
342 | 99 develop(intx, G1ExtraRegionSurvRate, 33, \ |
100 "If the young survival rate is S, and there's room left in " \ | |
101 "to-space, we will allow regions whose survival rate is up to " \ | |
102 "S + (1 - S)*X, where X is this parameter (as a fraction.)") \ | |
103 \ | |
104 develop(bool, G1SATBPrintStubs, false, \ | |
105 "If true, print generated stubs for the SATB barrier") \ | |
106 \ | |
1282 | 107 experimental(intx, G1ExpandByPercentOfAvailable, 20, \ |
342 | 108 "When expanding, % of uncommitted space to claim.") \ |
109 \ | |
110 develop(bool, G1RSBarrierRegionFilter, true, \ | |
111 "If true, generate region filtering code in RS barrier") \ | |
112 \ | |
113 develop(bool, G1RSBarrierNullFilter, true, \ | |
114 "If true, generate null-pointer filtering code in RS barrier") \ | |
115 \ | |
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116 develop(bool, G1DeferredRSUpdate, true, \ |
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117 "If true, use deferred RS updates") \ |
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118 \ |
342 | 119 develop(bool, G1RSLogCheckCardTable, false, \ |
120 "If true, verify that no dirty cards remain after RS log " \ | |
121 "processing.") \ | |
122 \ | |
123 develop(bool, G1RSCountHisto, false, \ | |
124 "If true, print a histogram of RS occupancies after each pause") \ | |
125 \ | |
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126 diagnostic(bool, G1PrintRegionLivenessInfo, false, \ |
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127 "Prints the liveness information for all regions in the heap " \ |
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128 "at the end of a marking cycle.") \ |
342 | 129 \ |
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130 product(intx, G1UpdateBufferSize, 256, \ |
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131 "Size of an update buffer") \ |
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132 \ |
1282 | 133 product(intx, G1ConcRefinementYellowZone, 0, \ |
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134 "Number of enqueued update buffers that will " \ |
1111 | 135 "trigger concurrent processing. Will be selected ergonomically " \ |
136 "by default.") \ | |
137 \ | |
1282 | 138 product(intx, G1ConcRefinementRedZone, 0, \ |
1111 | 139 "Maximum number of enqueued update buffers before mutator " \ |
140 "threads start processing new ones instead of enqueueing them. " \ | |
141 "Will be selected ergonomically by default. Zero will disable " \ | |
142 "concurrent processing.") \ | |
143 \ | |
1282 | 144 product(intx, G1ConcRefinementGreenZone, 0, \ |
1111 | 145 "The number of update buffers that are left in the queue by the " \ |
146 "concurrent processing threads. Will be selected ergonomically " \ | |
147 "by default.") \ | |
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148 \ |
1282 | 149 product(intx, G1ConcRefinementServiceIntervalMillis, 300, \ |
1111 | 150 "The last concurrent refinement thread wakes up every " \ |
151 "specified number of milliseconds to do miscellaneous work.") \ | |
152 \ | |
1282 | 153 product(intx, G1ConcRefinementThresholdStep, 0, \ |
1111 | 154 "Each time the rset update queue increases by this amount " \ |
155 "activate the next refinement thread if available. " \ | |
156 "Will be selected ergonomically by default.") \ | |
157 \ | |
1282 | 158 product(intx, G1RSetUpdatingPauseTimePercent, 10, \ |
1111 | 159 "A target percentage of time that is allowed to be spend on " \ |
160 "process RS update buffers during the collection pause.") \ | |
161 \ | |
1282 | 162 product(bool, G1UseAdaptiveConcRefinement, true, \ |
1111 | 163 "Select green, yellow and red zones adaptively to meet the " \ |
164 "the pause requirements.") \ | |
342 | 165 \ |
166 develop(intx, G1ConcRSLogCacheSize, 10, \ | |
167 "Log base 2 of the length of conc RS hot-card cache.") \ | |
168 \ | |
751 | 169 develop(intx, G1ConcRSHotCardLimit, 4, \ |
342 | 170 "The threshold that defines (>=) a hot card.") \ |
171 \ | |
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172 develop(intx, G1MaxHotCardCountSizePercent, 25, \ |
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173 "The maximum size of the hot card count cache as a " \ |
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174 "percentage of the number of cards for the maximum heap.") \ |
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175 \ |
342 | 176 develop(bool, G1PrintOopAppls, false, \ |
177 "When true, print applications of closures to external locs.") \ | |
178 \ | |
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179 develop(intx, G1RSetRegionEntriesBase, 256, \ |
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180 "Max number of regions in a fine-grain table per MB.") \ |
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181 \ |
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182 product(intx, G1RSetRegionEntries, 0, \ |
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183 "Max number of regions for which we keep bitmaps." \ |
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184 "Will be set ergonomically by default") \ |
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185 \ |
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186 develop(intx, G1RSetSparseRegionEntriesBase, 4, \ |
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187 "Max number of entries per region in a sparse table " \ |
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188 "per MB.") \ |
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189 \ |
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190 product(intx, G1RSetSparseRegionEntries, 0, \ |
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191 "Max number of entries per region in a sparse table." \ |
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192 "Will be set ergonomically by default.") \ |
342 | 193 \ |
194 develop(bool, G1RecordHRRSOops, false, \ | |
195 "When true, record recent calls to rem set operations.") \ | |
196 \ | |
197 develop(bool, G1RecordHRRSEvents, false, \ | |
198 "When true, record recent calls to rem set operations.") \ | |
199 \ | |
200 develop(intx, G1MaxVerifyFailures, -1, \ | |
201 "The maximum number of verification failrues to print. " \ | |
202 "-1 means print all.") \ | |
203 \ | |
204 develop(bool, G1ScrubRemSets, true, \ | |
205 "When true, do RS scrubbing after cleanup.") \ | |
206 \ | |
207 develop(bool, G1RSScrubVerbose, false, \ | |
208 "When true, do RS scrubbing with verbose output.") \ | |
209 \ | |
210 develop(bool, G1YoungSurvRateVerbose, false, \ | |
211 "print out the survival rate of young regions according to age.") \ | |
212 \ | |
213 develop(intx, G1YoungSurvRateNumRegionsSummary, 0, \ | |
214 "the number of regions for which we'll print a surv rate " \ | |
215 "summary.") \ | |
216 \ | |
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217 product(uintx, G1ReservePercent, 10, \ |
342 | 218 "It determines the minimum reserve we should have in the heap " \ |
219 "to minimize the probability of promotion failure.") \ | |
220 \ | |
1282 | 221 diagnostic(bool, G1PrintHeapRegions, false, \ |
342 | 222 "If set G1 will print information on which regions are being " \ |
223 "allocated and which are reclaimed.") \ | |
224 \ | |
225 develop(bool, G1HRRSUseSparseTable, true, \ | |
226 "When true, use sparse table to save space.") \ | |
227 \ | |
228 develop(bool, G1HRRSFlushLogBuffersOnVerify, false, \ | |
229 "Forces flushing of log buffers before verification.") \ | |
230 \ | |
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231 develop(bool, G1FailOnFPError, false, \ |
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232 "When set, G1 will fail when it encounters an FP 'error', " \ |
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233 "so as to allow debugging") \ |
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234 \ |
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235 product(uintx, G1HeapRegionSize, 0, \ |
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236 "Size of the G1 regions.") \ |
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237 \ |
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238 experimental(bool, G1UseParallelRSetUpdating, true, \ |
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239 "Enables the parallelization of remembered set updating " \ |
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240 "during evacuation pauses") \ |
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241 \ |
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242 experimental(bool, G1UseParallelRSetScanning, true, \ |
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243 "Enables the parallelization of remembered set scanning " \ |
794 | 244 "during evacuation pauses") \ |
245 \ | |
1282 | 246 product(uintx, G1ConcRefinementThreads, 0, \ |
794 | 247 "If non-0 is the number of parallel rem set update threads, " \ |
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248 "otherwise the value is determined ergonomically.") \ |
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249 \ |
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250 develop(intx, G1CardCountCacheExpandThreshold, 16, \ |
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251 "Expand the card count cache if the number of collisions for " \ |
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252 "a particular entry exceeds this value.") \ |
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253 \ |
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254 develop(bool, G1VerifyCTCleanup, false, \ |
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255 "Verify card table cleanup.") \ |
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256 \ |
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257 product(uintx, G1RSetScanBlockSize, 64, \ |
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258 "Size of a work unit of cards claimed by a worker thread" \ |
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259 "during RSet scanning.") \ |
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260 \ |
2152 | 261 develop(uintx, G1SecondaryFreeListAppendLength, 5, \ |
262 "The number of regions we will add to the secondary free list " \ | |
263 "at every append operation") \ | |
264 \ | |
265 develop(bool, G1ConcRegionFreeingVerbose, false, \ | |
266 "Enables verboseness during concurrent region freeing") \ | |
267 \ | |
268 develop(bool, G1StressConcRegionFreeing, false, \ | |
269 "It stresses the concurrent region freeing operation") \ | |
270 \ | |
271 develop(uintx, G1StressConcRegionFreeingDelayMillis, 0, \ | |
272 "Artificial delay during concurrent region freeing") \ | |
273 \ | |
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274 develop(uintx, G1DummyRegionsPerGC, 0, \ |
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275 "The number of dummy regions G1 will allocate at the end of " \ |
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276 "each evacuation pause in order to artificially fill up the " \ |
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277 "heap and stress the marking implementation.") \ |
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278 \ |
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279 develop(bool, G1ExitOnExpansionFailure, false, \ |
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280 "Raise a fatal VM exit out of memory failure in the event " \ |
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281 " that heap expansion fails due to running out of swap.") \ |
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282 \ |
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283 develop(uintx, G1ConcMarkForceOverflow, 0, \ |
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284 "The number of times we'll force an overflow during " \ |
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285 "concurrent marking") \ |
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286 \ |
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287 experimental(uintx, G1NewSizePercent, 5, \ |
7449 | 288 "Percentage (0-100) of the heap size to use as default " \ |
289 "minimum young gen size.") \ | |
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290 \ |
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291 experimental(uintx, G1MaxNewSizePercent, 60, \ |
7449 | 292 "Percentage (0-100) of the heap size to use as default " \ |
293 " maximum young gen size.") \ | |
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294 \ |
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295 experimental(uintx, G1MixedGCLiveThresholdPercent, 65, \ |
7449 | 296 "Threshold for regions to be considered for inclusion in the " \ |
297 "collection set of mixed GCs. " \ | |
298 "Regions with live bytes exceeding this will not be collected.") \ | |
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299 \ |
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300 product(uintx, G1HeapWastePercent, 10, \ |
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301 "Amount of space, expressed as a percentage of the heap size, " \ |
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302 "that G1 is willing not to collect to avoid expensive GCs.") \ |
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303 \ |
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304 product(uintx, G1MixedGCCountTarget, 8, \ |
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305 "The target number of mixed GCs after a marking cycle.") \ |
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306 \ |
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307 experimental(uintx, G1OldCSetRegionThresholdPercent, 10, \ |
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308 "An upper bound for the number of old CSet regions expressed " \ |
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309 "as a percentage of the heap size.") \ |
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310 \ |
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311 experimental(ccstr, G1LogLevel, NULL, \ |
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312 "Log level for G1 logging: fine, finer, finest") \ |
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313 \ |
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314 notproduct(bool, G1EvacuationFailureALot, false, \ |
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315 "Force use of evacuation failure handling during certain " \ |
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316 "evacuation pauses") \ |
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317 \ |
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318 develop(uintx, G1EvacuationFailureALotCount, 1000, \ |
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319 "Number of successful evacuations between evacuation failures " \ |
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320 "occurring at object copying") \ |
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321 \ |
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322 develop(uintx, G1EvacuationFailureALotInterval, 5, \ |
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323 "Total collections between forced triggering of evacuation " \ |
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324 "failures") \ |
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325 \ |
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326 develop(bool, G1EvacuationFailureALotDuringConcMark, true, \ |
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327 "Force use of evacuation failure handling during evacuation " \ |
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328 "pauses when marking is in progress") \ |
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329 \ |
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330 develop(bool, G1EvacuationFailureALotDuringInitialMark, true, \ |
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331 "Force use of evacuation failure handling during initial mark " \ |
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332 "evacuation pauses") \ |
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333 \ |
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334 develop(bool, G1EvacuationFailureALotDuringYoungGC, true, \ |
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335 "Force use of evacuation failure handling during young " \ |
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336 "evacuation pauses") \ |
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337 \ |
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338 develop(bool, G1EvacuationFailureALotDuringMixedGC, true, \ |
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339 "Force use of evacuation failure handling during mixed " \ |
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340 "evacuation pauses") |
342 | 341 |
350
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342 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 | 343 |
344 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1_GLOBALS_HPP |