Mercurial > hg > graal-jvmci-8
annotate src/share/vm/gc_implementation/g1/g1_globals.hpp @ 3978:f0ecbe78fc7b
7092238: G1: Uninitialized field gc_efficiency in G1PrintRegionLivenessInfo output
Reviewed-by: jcoomes, johnc
author | tonyp |
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date | Thu, 22 Sep 2011 07:18:51 -0400 |
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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 * | |
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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 \ | |
42 \ | |
751 | 43 develop(intx, G1PolicyVerbose, 0, \ |
342 | 44 "The verbosity level on G1 policy decisions") \ |
45 \ | |
46 develop(intx, G1MarkingVerboseLevel, 0, \ | |
47 "Level (0-4) of verboseness of the marking code") \ | |
48 \ | |
1044 | 49 develop(bool, G1PrintReachableAtInitialMark, false, \ |
50 "Reachable object dump at the initial mark pause") \ | |
51 \ | |
52 develop(bool, G1VerifyDuringGCPrintReachable, false, \ | |
53 "If conc mark verification fails, dump reachable objects") \ | |
54 \ | |
55 develop(ccstr, G1PrintReachableBaseFile, NULL, \ | |
56 "The base file name for the reachable object dumps") \ | |
342 | 57 \ |
58 develop(bool, G1TraceMarkStackOverflow, false, \ | |
59 "If true, extra debugging code for CM restart for ovflw.") \ | |
60 \ | |
61 develop(intx, G1PausesBtwnConcMark, -1, \ | |
62 "If positive, fixed number of pauses between conc markings") \ | |
63 \ | |
1282 | 64 diagnostic(bool, G1SummarizeConcMark, false, \ |
342 | 65 "Summarize concurrent mark info") \ |
66 \ | |
751 | 67 diagnostic(bool, G1SummarizeRSetStats, false, \ |
342 | 68 "Summarize remembered set processing info") \ |
69 \ | |
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70 diagnostic(intx, G1SummarizeRSetStatsPeriod, 0, \ |
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71 "The period (in number of GCs) at which we will generate " \ |
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72 "update buffer processing info " \ |
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73 "(0 means do not periodically generate this info); " \ |
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74 "it also requires -XX:+G1SummarizeRSetStats") \ |
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75 \ |
1282 | 76 diagnostic(bool, G1TraceConcRefinement, false, \ |
342 | 77 "Trace G1 concurrent refinement") \ |
78 \ | |
751 | 79 product(intx, G1MarkRegionStackSize, 1024 * 1024, \ |
342 | 80 "Size of the region stack for concurrent marking.") \ |
81 \ | |
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82 product(double, G1ConcMarkStepDurationMillis, 10.0, \ |
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83 "Target duration of individual concurrent marking steps " \ |
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84 "in milliseconds.") \ |
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85 \ |
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86 product(intx, G1RefProcDrainInterval, 10, \ |
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87 "The number of discovered reference objects to process before " \ |
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88 "draining concurrent marking work queues.") \ |
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89 \ |
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90 experimental(bool, G1UseConcMarkReferenceProcessing, true, \ |
2436 | 91 "If true, enable reference discovery during concurrent " \ |
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92 "marking and reference processing at the end of remark.") \ |
342 | 93 \ |
1282 | 94 product(intx, G1SATBBufferSize, 1*K, \ |
342 | 95 "Number of entries in an SATB log buffer.") \ |
96 \ | |
1282 | 97 develop(intx, G1SATBProcessCompletedThreshold, 20, \ |
342 | 98 "Number of completed buffers that triggers log processing.") \ |
99 \ | |
2149 | 100 product(uintx, G1SATBBufferEnqueueingThresholdPercent, 60, \ |
101 "Before enqueueing them, each mutator thread tries to do some " \ | |
102 "filtering on the SATB buffers it generates. If post-filtering " \ | |
103 "the percentage of retained entries is over this threshold " \ | |
104 "the buffer will be enqueued for processing. A value of 0 " \ | |
105 "specifies that mutator threads should not do such filtering.") \ | |
106 \ | |
342 | 107 develop(intx, G1ExtraRegionSurvRate, 33, \ |
108 "If the young survival rate is S, and there's room left in " \ | |
109 "to-space, we will allow regions whose survival rate is up to " \ | |
110 "S + (1 - S)*X, where X is this parameter (as a fraction.)") \ | |
111 \ | |
112 develop(intx, G1InitYoungSurvRatio, 50, \ | |
113 "Expected Survival Rate for newly allocated bytes") \ | |
114 \ | |
115 develop(bool, G1SATBPrintStubs, false, \ | |
116 "If true, print generated stubs for the SATB barrier") \ | |
117 \ | |
1282 | 118 experimental(intx, G1ExpandByPercentOfAvailable, 20, \ |
342 | 119 "When expanding, % of uncommitted space to claim.") \ |
120 \ | |
121 develop(bool, G1RSBarrierRegionFilter, true, \ | |
122 "If true, generate region filtering code in RS barrier") \ | |
123 \ | |
124 develop(bool, G1RSBarrierNullFilter, true, \ | |
125 "If true, generate null-pointer filtering code in RS barrier") \ | |
126 \ | |
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127 develop(bool, G1DeferredRSUpdate, true, \ |
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128 "If true, use deferred RS updates") \ |
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129 \ |
342 | 130 develop(bool, G1RSLogCheckCardTable, false, \ |
131 "If true, verify that no dirty cards remain after RS log " \ | |
132 "processing.") \ | |
133 \ | |
134 develop(bool, G1RSCountHisto, false, \ | |
135 "If true, print a histogram of RS occupancies after each pause") \ | |
136 \ | |
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137 diagnostic(bool, G1PrintRegionLivenessInfo, false, \ |
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138 "Prints the liveness information for all regions in the heap " \ |
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139 "at the end of a marking cycle.") \ |
342 | 140 \ |
141 develop(bool, G1PrintParCleanupStats, false, \ | |
142 "When true, print extra stats about parallel cleanup.") \ | |
143 \ | |
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144 product(intx, G1UpdateBufferSize, 256, \ |
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145 "Size of an update buffer") \ |
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146 \ |
1282 | 147 product(intx, G1ConcRefinementYellowZone, 0, \ |
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148 "Number of enqueued update buffers that will " \ |
1111 | 149 "trigger concurrent processing. Will be selected ergonomically " \ |
150 "by default.") \ | |
151 \ | |
1282 | 152 product(intx, G1ConcRefinementRedZone, 0, \ |
1111 | 153 "Maximum number of enqueued update buffers before mutator " \ |
154 "threads start processing new ones instead of enqueueing them. " \ | |
155 "Will be selected ergonomically by default. Zero will disable " \ | |
156 "concurrent processing.") \ | |
157 \ | |
1282 | 158 product(intx, G1ConcRefinementGreenZone, 0, \ |
1111 | 159 "The number of update buffers that are left in the queue by the " \ |
160 "concurrent processing threads. Will be selected ergonomically " \ | |
161 "by default.") \ | |
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162 \ |
1282 | 163 product(intx, G1ConcRefinementServiceIntervalMillis, 300, \ |
1111 | 164 "The last concurrent refinement thread wakes up every " \ |
165 "specified number of milliseconds to do miscellaneous work.") \ | |
166 \ | |
1282 | 167 product(intx, G1ConcRefinementThresholdStep, 0, \ |
1111 | 168 "Each time the rset update queue increases by this amount " \ |
169 "activate the next refinement thread if available. " \ | |
170 "Will be selected ergonomically by default.") \ | |
171 \ | |
1282 | 172 product(intx, G1RSetUpdatingPauseTimePercent, 10, \ |
1111 | 173 "A target percentage of time that is allowed to be spend on " \ |
174 "process RS update buffers during the collection pause.") \ | |
175 \ | |
1282 | 176 product(bool, G1UseAdaptiveConcRefinement, true, \ |
1111 | 177 "Select green, yellow and red zones adaptively to meet the " \ |
178 "the pause requirements.") \ | |
342 | 179 \ |
180 develop(intx, G1ConcRSLogCacheSize, 10, \ | |
181 "Log base 2 of the length of conc RS hot-card cache.") \ | |
182 \ | |
751 | 183 develop(intx, G1ConcRSHotCardLimit, 4, \ |
342 | 184 "The threshold that defines (>=) a hot card.") \ |
185 \ | |
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186 develop(intx, G1MaxHotCardCountSizePercent, 25, \ |
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187 "The maximum size of the hot card count cache as a " \ |
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188 "percentage of the number of cards for the maximum heap.") \ |
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189 \ |
342 | 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 \ | |
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231 product(uintx, 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 \ |
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249 product(uintx, G1HeapRegionSize, 0, \ |
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250 "Size of the G1 regions.") \ |
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251 \ |
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252 experimental(bool, G1UseParallelRSetUpdating, true, \ |
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253 "Enables the parallelization of remembered set updating " \ |
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254 "during evacuation pauses") \ |
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255 \ |
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256 experimental(bool, G1UseParallelRSetScanning, true, \ |
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257 "Enables the parallelization of remembered set scanning " \ |
794 | 258 "during evacuation pauses") \ |
259 \ | |
1282 | 260 product(uintx, G1ConcRefinementThreads, 0, \ |
794 | 261 "If non-0 is the number of parallel rem set update threads, " \ |
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262 "otherwise the value is determined ergonomically.") \ |
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263 \ |
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264 develop(intx, G1CardCountCacheExpandThreshold, 16, \ |
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265 "Expand the card count cache if the number of collisions for " \ |
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266 "a particular entry exceeds this value.") \ |
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267 \ |
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268 develop(bool, G1VerifyCTCleanup, false, \ |
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269 "Verify card table cleanup.") \ |
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270 \ |
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271 product(uintx, G1RSetScanBlockSize, 64, \ |
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272 "Size of a work unit of cards claimed by a worker thread" \ |
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273 "during RSet scanning.") \ |
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274 \ |
2152 | 275 develop(uintx, G1SecondaryFreeListAppendLength, 5, \ |
276 "The number of regions we will add to the secondary free list " \ | |
277 "at every append operation") \ | |
278 \ | |
279 develop(bool, G1ConcRegionFreeingVerbose, false, \ | |
280 "Enables verboseness during concurrent region freeing") \ | |
281 \ | |
282 develop(bool, G1StressConcRegionFreeing, false, \ | |
283 "It stresses the concurrent region freeing operation") \ | |
284 \ | |
285 develop(uintx, G1StressConcRegionFreeingDelayMillis, 0, \ | |
286 "Artificial delay during concurrent region freeing") \ | |
287 \ | |
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288 develop(uintx, G1DummyRegionsPerGC, 0, \ |
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289 "The number of dummy regions G1 will allocate at the end of " \ |
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290 "each evacuation pause in order to artificially fill up the " \ |
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291 "heap and stress the marking implementation.") \ |
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292 \ |
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293 develop(bool, ReduceInitialCardMarksForG1, false, \ |
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294 "When ReduceInitialCardMarks is true, this flag setting " \ |
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295 " controls whether G1 allows the RICM optimization") \ |
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296 \ |
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297 develop(bool, G1ExitOnExpansionFailure, false, \ |
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298 "Raise a fatal VM exit out of memory failure in the event " \ |
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299 " that heap expansion fails due to running out of swap.") \ |
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300 \ |
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301 develop(uintx, G1ConcMarkForceOverflow, 0, \ |
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302 "The number of times we'll force an overflow during " \ |
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303 "concurrent marking") |
342 | 304 |
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305 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 | 306 |
307 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1_GLOBALS_HPP |