Mercurial > hg > graal-jvmci-8
annotate src/share/vm/gc_implementation/g1/g1_globals.hpp @ 22906:ad32e85474ff
8051837: Remove temporary G1UseParallelRSetUpdating and G1UseParallelRSetScanning flags
Reviewed-by: stefank, tschatzl
Contributed-by: marcus.larsson@oracle.com
author | brutisso |
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date | Thu, 07 Aug 2014 09:35:08 +0200 |
parents | fa14838b03c4 |
children | cbc7c4c9e11c |
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342 | 1 /* |
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2 * Copyright (c) 2001, 2014, 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 \ |
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35 product(uintx, 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 experimental(bool, G1TraceStringSymbolTableScrubbing, false, \ |
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75 "Trace information string and symbol table scrubbing.") \ |
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76 \ |
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77 product(double, G1ConcMarkStepDurationMillis, 10.0, \ |
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78 "Target duration of individual concurrent marking steps " \ |
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79 "in milliseconds.") \ |
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80 \ |
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81 product(intx, G1RefProcDrainInterval, 10, \ |
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82 "The number of discovered reference objects to process before " \ |
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83 "draining concurrent marking work queues.") \ |
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84 \ |
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85 experimental(bool, G1UseConcMarkReferenceProcessing, true, \ |
2436 | 86 "If true, enable reference discovery during concurrent " \ |
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87 "marking and reference processing at the end of remark.") \ |
342 | 88 \ |
1282 | 89 product(intx, G1SATBBufferSize, 1*K, \ |
342 | 90 "Number of entries in an SATB log buffer.") \ |
91 \ | |
1282 | 92 develop(intx, G1SATBProcessCompletedThreshold, 20, \ |
342 | 93 "Number of completed buffers that triggers log processing.") \ |
94 \ | |
2149 | 95 product(uintx, G1SATBBufferEnqueueingThresholdPercent, 60, \ |
96 "Before enqueueing them, each mutator thread tries to do some " \ | |
97 "filtering on the SATB buffers it generates. If post-filtering " \ | |
98 "the percentage of retained entries is over this threshold " \ | |
99 "the buffer will be enqueued for processing. A value of 0 " \ | |
100 "specifies that mutator threads should not do such filtering.") \ | |
101 \ | |
342 | 102 develop(bool, G1SATBPrintStubs, false, \ |
103 "If true, print generated stubs for the SATB barrier") \ | |
104 \ | |
1282 | 105 experimental(intx, G1ExpandByPercentOfAvailable, 20, \ |
342 | 106 "When expanding, % of uncommitted space to claim.") \ |
107 \ | |
108 develop(bool, G1RSBarrierRegionFilter, true, \ | |
109 "If true, generate region filtering code in RS barrier") \ | |
110 \ | |
111 develop(bool, G1RSLogCheckCardTable, false, \ | |
112 "If true, verify that no dirty cards remain after RS log " \ | |
113 "processing.") \ | |
114 \ | |
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115 diagnostic(bool, G1PrintRegionLivenessInfo, false, \ |
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116 "Prints the liveness information for all regions in the heap " \ |
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117 "at the end of a marking cycle.") \ |
342 | 118 \ |
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119 product(intx, G1UpdateBufferSize, 256, \ |
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120 "Size of an update buffer") \ |
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121 \ |
1282 | 122 product(intx, G1ConcRefinementYellowZone, 0, \ |
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123 "Number of enqueued update buffers that will " \ |
1111 | 124 "trigger concurrent processing. Will be selected ergonomically " \ |
125 "by default.") \ | |
126 \ | |
1282 | 127 product(intx, G1ConcRefinementRedZone, 0, \ |
1111 | 128 "Maximum number of enqueued update buffers before mutator " \ |
129 "threads start processing new ones instead of enqueueing them. " \ | |
130 "Will be selected ergonomically by default. Zero will disable " \ | |
131 "concurrent processing.") \ | |
132 \ | |
1282 | 133 product(intx, G1ConcRefinementGreenZone, 0, \ |
1111 | 134 "The number of update buffers that are left in the queue by the " \ |
135 "concurrent processing threads. Will be selected ergonomically " \ | |
136 "by default.") \ | |
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137 \ |
1282 | 138 product(intx, G1ConcRefinementServiceIntervalMillis, 300, \ |
1111 | 139 "The last concurrent refinement thread wakes up every " \ |
140 "specified number of milliseconds to do miscellaneous work.") \ | |
141 \ | |
1282 | 142 product(intx, G1ConcRefinementThresholdStep, 0, \ |
1111 | 143 "Each time the rset update queue increases by this amount " \ |
144 "activate the next refinement thread if available. " \ | |
145 "Will be selected ergonomically by default.") \ | |
146 \ | |
1282 | 147 product(intx, G1RSetUpdatingPauseTimePercent, 10, \ |
1111 | 148 "A target percentage of time that is allowed to be spend on " \ |
149 "process RS update buffers during the collection pause.") \ | |
150 \ | |
1282 | 151 product(bool, G1UseAdaptiveConcRefinement, true, \ |
1111 | 152 "Select green, yellow and red zones adaptively to meet the " \ |
153 "the pause requirements.") \ | |
342 | 154 \ |
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155 product(uintx, G1ConcRSLogCacheSize, 10, \ |
342 | 156 "Log base 2 of the length of conc RS hot-card cache.") \ |
157 \ | |
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158 product(uintx, G1ConcRSHotCardLimit, 4, \ |
342 | 159 "The threshold that defines (>=) a hot card.") \ |
160 \ | |
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161 develop(intx, G1RSetRegionEntriesBase, 256, \ |
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162 "Max number of regions in a fine-grain table per MB.") \ |
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163 \ |
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164 product(intx, G1RSetRegionEntries, 0, \ |
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165 "Max number of regions for which we keep bitmaps." \ |
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166 "Will be set ergonomically by default") \ |
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167 \ |
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168 develop(intx, G1RSetSparseRegionEntriesBase, 4, \ |
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169 "Max number of entries per region in a sparse table " \ |
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170 "per MB.") \ |
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171 \ |
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172 product(intx, G1RSetSparseRegionEntries, 0, \ |
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173 "Max number of entries per region in a sparse table." \ |
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174 "Will be set ergonomically by default.") \ |
342 | 175 \ |
176 develop(bool, G1RecordHRRSOops, false, \ | |
177 "When true, record recent calls to rem set operations.") \ | |
178 \ | |
179 develop(bool, G1RecordHRRSEvents, false, \ | |
180 "When true, record recent calls to rem set operations.") \ | |
181 \ | |
182 develop(intx, G1MaxVerifyFailures, -1, \ | |
183 "The maximum number of verification failrues to print. " \ | |
184 "-1 means print all.") \ | |
185 \ | |
186 develop(bool, G1ScrubRemSets, true, \ | |
187 "When true, do RS scrubbing after cleanup.") \ | |
188 \ | |
189 develop(bool, G1RSScrubVerbose, false, \ | |
190 "When true, do RS scrubbing with verbose output.") \ | |
191 \ | |
192 develop(bool, G1YoungSurvRateVerbose, false, \ | |
193 "print out the survival rate of young regions according to age.") \ | |
194 \ | |
195 develop(intx, G1YoungSurvRateNumRegionsSummary, 0, \ | |
196 "the number of regions for which we'll print a surv rate " \ | |
197 "summary.") \ | |
198 \ | |
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199 product(uintx, G1ReservePercent, 10, \ |
342 | 200 "It determines the minimum reserve we should have in the heap " \ |
201 "to minimize the probability of promotion failure.") \ | |
202 \ | |
1282 | 203 diagnostic(bool, G1PrintHeapRegions, false, \ |
342 | 204 "If set G1 will print information on which regions are being " \ |
205 "allocated and which are reclaimed.") \ | |
206 \ | |
207 develop(bool, G1HRRSUseSparseTable, true, \ | |
208 "When true, use sparse table to save space.") \ | |
209 \ | |
210 develop(bool, G1HRRSFlushLogBuffersOnVerify, false, \ | |
211 "Forces flushing of log buffers before verification.") \ | |
212 \ | |
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213 develop(bool, G1FailOnFPError, false, \ |
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214 "When set, G1 will fail when it encounters an FP 'error', " \ |
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215 "so as to allow debugging") \ |
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216 \ |
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217 product(uintx, G1HeapRegionSize, 0, \ |
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218 "Size of the G1 regions.") \ |
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219 \ |
1282 | 220 product(uintx, G1ConcRefinementThreads, 0, \ |
794 | 221 "If non-0 is the number of parallel rem set update threads, " \ |
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222 "otherwise the value is determined ergonomically.") \ |
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223 \ |
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224 develop(bool, G1VerifyCTCleanup, false, \ |
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225 "Verify card table cleanup.") \ |
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226 \ |
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227 product(uintx, G1RSetScanBlockSize, 64, \ |
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228 "Size of a work unit of cards claimed by a worker thread" \ |
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229 "during RSet scanning.") \ |
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230 \ |
2152 | 231 develop(uintx, G1SecondaryFreeListAppendLength, 5, \ |
232 "The number of regions we will add to the secondary free list " \ | |
233 "at every append operation") \ | |
234 \ | |
235 develop(bool, G1ConcRegionFreeingVerbose, false, \ | |
236 "Enables verboseness during concurrent region freeing") \ | |
237 \ | |
238 develop(bool, G1StressConcRegionFreeing, false, \ | |
239 "It stresses the concurrent region freeing operation") \ | |
240 \ | |
241 develop(uintx, G1StressConcRegionFreeingDelayMillis, 0, \ | |
242 "Artificial delay during concurrent region freeing") \ | |
243 \ | |
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244 develop(uintx, G1DummyRegionsPerGC, 0, \ |
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245 "The number of dummy regions G1 will allocate at the end of " \ |
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246 "each evacuation pause in order to artificially fill up the " \ |
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247 "heap and stress the marking implementation.") \ |
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248 \ |
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249 develop(bool, G1ExitOnExpansionFailure, false, \ |
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250 "Raise a fatal VM exit out of memory failure in the event " \ |
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251 " that heap expansion fails due to running out of swap.") \ |
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252 \ |
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253 develop(uintx, G1ConcMarkForceOverflow, 0, \ |
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254 "The number of times we'll force an overflow during " \ |
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255 "concurrent marking") \ |
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256 \ |
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257 experimental(uintx, G1NewSizePercent, 5, \ |
7449 | 258 "Percentage (0-100) of the heap size to use as default " \ |
259 "minimum young gen size.") \ | |
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260 \ |
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261 experimental(uintx, G1MaxNewSizePercent, 60, \ |
7449 | 262 "Percentage (0-100) of the heap size to use as default " \ |
263 " maximum young gen size.") \ | |
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264 \ |
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265 experimental(uintx, G1MixedGCLiveThresholdPercent, 85, \ |
7449 | 266 "Threshold for regions to be considered for inclusion in the " \ |
267 "collection set of mixed GCs. " \ | |
268 "Regions with live bytes exceeding this will not be collected.") \ | |
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269 \ |
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270 product(uintx, G1HeapWastePercent, 5, \ |
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271 "Amount of space, expressed as a percentage of the heap size, " \ |
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272 "that G1 is willing not to collect to avoid expensive GCs.") \ |
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273 \ |
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274 product(uintx, G1MixedGCCountTarget, 8, \ |
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275 "The target number of mixed GCs after a marking cycle.") \ |
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276 \ |
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277 experimental(bool, G1ReclaimDeadHumongousObjectsAtYoungGC, true, \ |
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278 "Try to reclaim dead large objects at every young GC.") \ |
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279 \ |
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280 experimental(bool, G1TraceReclaimDeadHumongousObjectsAtYoungGC, false, \ |
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281 "Print some information about large object liveness " \ |
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282 "at every young GC.") \ |
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283 \ |
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284 experimental(uintx, G1OldCSetRegionThresholdPercent, 10, \ |
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285 "An upper bound for the number of old CSet regions expressed " \ |
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286 "as a percentage of the heap size.") \ |
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287 \ |
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288 experimental(ccstr, G1LogLevel, NULL, \ |
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289 "Log level for G1 logging: fine, finer, finest") \ |
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290 \ |
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291 notproduct(bool, G1EvacuationFailureALot, false, \ |
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292 "Force use of evacuation failure handling during certain " \ |
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293 "evacuation pauses") \ |
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294 \ |
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295 develop(uintx, G1EvacuationFailureALotCount, 1000, \ |
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296 "Number of successful evacuations between evacuation failures " \ |
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297 "occurring at object copying") \ |
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298 \ |
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299 develop(uintx, G1EvacuationFailureALotInterval, 5, \ |
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300 "Total collections between forced triggering of evacuation " \ |
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301 "failures") \ |
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302 \ |
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303 develop(bool, G1EvacuationFailureALotDuringConcMark, true, \ |
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304 "Force use of evacuation failure handling during evacuation " \ |
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305 "pauses when marking is in progress") \ |
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306 \ |
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307 develop(bool, G1EvacuationFailureALotDuringInitialMark, true, \ |
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308 "Force use of evacuation failure handling during initial mark " \ |
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309 "evacuation pauses") \ |
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310 \ |
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311 develop(bool, G1EvacuationFailureALotDuringYoungGC, true, \ |
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312 "Force use of evacuation failure handling during young " \ |
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313 "evacuation pauses") \ |
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314 \ |
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315 develop(bool, G1EvacuationFailureALotDuringMixedGC, true, \ |
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316 "Force use of evacuation failure handling during mixed " \ |
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317 "evacuation pauses") \ |
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318 \ |
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319 diagnostic(bool, G1VerifyRSetsDuringFullGC, false, \ |
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320 "If true, perform verification of each heap region's " \ |
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321 "remembered set when verifying the heap during a full GC.") \ |
12080 | 322 \ |
323 diagnostic(bool, G1VerifyHeapRegionCodeRoots, false, \ | |
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324 "Verify the code root lists attached to each heap region.") \ |
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325 \ |
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326 develop(bool, G1VerifyBitmaps, false, \ |
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327 "Verifies the consistency of the marking bitmaps") |
342 | 328 |
350
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329 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 | 330 |
331 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1_GLOBALS_HPP |