Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/g1/g1_globals.hpp @ 1044:6270f80a7331
6890137: G1: revamp reachable object dump
Summary: Revamp the reachable object dump debugging facility.
Reviewed-by: jmasa, apetrusenko
author | tonyp |
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date | Wed, 30 Sep 2009 14:50:51 -0400 |
parents | 2c79770d1f6e |
children | 23b9a8d315fc |
rev | line source |
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342 | 1 /* |
579 | 2 * Copyright 2001-2009 Sun Microsystems, Inc. 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 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 // | |
26 // Defines all globals flags used by the garbage-first compiler. | |
27 // | |
28 | |
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29 #define G1_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw) \ |
342 | 30 \ |
751 | 31 product(intx, G1ParallelGCAllocBufferSize, 8*K, \ |
342 | 32 "Size of parallel G1 allocation buffers in to-space.") \ |
33 \ | |
751 | 34 product(intx, G1ConfidencePercent, 50, \ |
342 | 35 "Confidence level for MMU/pause predictions") \ |
36 \ | |
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37 develop(intx, G1MarkingOverheadPercent, 0, \ |
342 | 38 "Overhead of concurrent marking") \ |
39 \ | |
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40 product(uintx, G1YoungGenSize, 0, \ |
342 | 41 "Size of the G1 young generation, 0 is the adaptive policy") \ |
42 \ | |
751 | 43 develop(bool, G1Gen, true, \ |
342 | 44 "If true, it will enable the generational G1") \ |
45 \ | |
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46 develop(intx, G1GCPercent, 10, \ |
342 | 47 "The desired percent time spent on GC") \ |
48 \ | |
751 | 49 develop(intx, G1PolicyVerbose, 0, \ |
342 | 50 "The verbosity level on G1 policy decisions") \ |
51 \ | |
52 develop(bool, G1UseHRIntoRS, true, \ | |
53 "Determines whether the 'advanced' HR Into rem set is used.") \ | |
54 \ | |
55 develop(intx, G1MarkingVerboseLevel, 0, \ | |
56 "Level (0-4) of verboseness of the marking code") \ | |
57 \ | |
1044 | 58 develop(bool, G1PrintReachableAtInitialMark, false, \ |
59 "Reachable object dump at the initial mark pause") \ | |
60 \ | |
61 develop(bool, G1VerifyDuringGCPrintReachable, false, \ | |
62 "If conc mark verification fails, dump reachable objects") \ | |
63 \ | |
64 develop(ccstr, G1PrintReachableBaseFile, NULL, \ | |
65 "The base file name for the reachable object dumps") \ | |
342 | 66 \ |
67 develop(bool, G1TraceMarkStackOverflow, false, \ | |
68 "If true, extra debugging code for CM restart for ovflw.") \ | |
69 \ | |
70 develop(intx, G1PausesBtwnConcMark, -1, \ | |
71 "If positive, fixed number of pauses between conc markings") \ | |
72 \ | |
751 | 73 diagnostic(bool, G1SummarizeConcurrentMark, false, \ |
342 | 74 "Summarize concurrent mark info") \ |
75 \ | |
751 | 76 diagnostic(bool, G1SummarizeRSetStats, false, \ |
342 | 77 "Summarize remembered set processing info") \ |
78 \ | |
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79 diagnostic(intx, G1SummarizeRSetStatsPeriod, 0, \ |
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80 "The period (in number of GCs) at which we will generate " \ |
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81 "update buffer processing info " \ |
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82 "(0 means do not periodically generate this info); " \ |
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83 "it also requires -XX:+G1SummarizeRSetStats") \ |
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84 \ |
751 | 85 diagnostic(bool, G1SummarizeZFStats, false, \ |
342 | 86 "Summarize zero-filling info") \ |
87 \ | |
751 | 88 develop(bool, G1TraceConcurrentRefinement, false, \ |
342 | 89 "Trace G1 concurrent refinement") \ |
90 \ | |
751 | 91 product(intx, G1MarkStackSize, 2 * 1024 * 1024, \ |
342 | 92 "Size of the mark stack for concurrent marking.") \ |
93 \ | |
751 | 94 product(intx, G1MarkRegionStackSize, 1024 * 1024, \ |
342 | 95 "Size of the region stack for concurrent marking.") \ |
96 \ | |
97 develop(bool, G1ConcRefine, true, \ | |
98 "If true, run concurrent rem set refinement for G1") \ | |
99 \ | |
100 develop(intx, G1ConcRefineTargTraversals, 4, \ | |
101 "Number of concurrent refinement we try to achieve") \ | |
102 \ | |
103 develop(intx, G1ConcRefineInitialDelta, 4, \ | |
104 "Number of heap regions of alloc ahead of starting collection " \ | |
105 "pause to start concurrent refinement (initially)") \ | |
106 \ | |
751 | 107 develop(bool, G1SmoothConcRefine, true, \ |
342 | 108 "Attempts to smooth out the overhead of concurrent refinement") \ |
109 \ | |
110 develop(bool, G1ConcZeroFill, true, \ | |
111 "If true, run concurrent zero-filling thread") \ | |
112 \ | |
113 develop(intx, G1ConcZFMaxRegions, 1, \ | |
114 "Stop zero-filling when # of zf'd regions reaches") \ | |
115 \ | |
116 product(intx, G1SteadyStateUsed, 90, \ | |
117 "If non-0, try to maintain 'used' at this pct (of max)") \ | |
118 \ | |
119 product(intx, G1SteadyStateUsedDelta, 30, \ | |
120 "If G1SteadyStateUsed is non-0, then do pause this number of " \ | |
121 "of percentage points earlier if no marking is in progress.") \ | |
122 \ | |
123 develop(bool, G1SATBBarrierPrintNullPreVals, false, \ | |
124 "If true, count frac of ptr writes with null pre-vals.") \ | |
125 \ | |
126 product(intx, G1SATBLogBufferSize, 1*K, \ | |
127 "Number of entries in an SATB log buffer.") \ | |
128 \ | |
129 product(intx, G1SATBProcessCompletedThreshold, 20, \ | |
130 "Number of completed buffers that triggers log processing.") \ | |
131 \ | |
132 develop(intx, G1ExtraRegionSurvRate, 33, \ | |
133 "If the young survival rate is S, and there's room left in " \ | |
134 "to-space, we will allow regions whose survival rate is up to " \ | |
135 "S + (1 - S)*X, where X is this parameter (as a fraction.)") \ | |
136 \ | |
137 develop(intx, G1InitYoungSurvRatio, 50, \ | |
138 "Expected Survival Rate for newly allocated bytes") \ | |
139 \ | |
140 develop(bool, G1SATBPrintStubs, false, \ | |
141 "If true, print generated stubs for the SATB barrier") \ | |
142 \ | |
751 | 143 product(intx, G1ExpandByPercentOfAvailable, 20, \ |
342 | 144 "When expanding, % of uncommitted space to claim.") \ |
145 \ | |
146 develop(bool, G1RSBarrierRegionFilter, true, \ | |
147 "If true, generate region filtering code in RS barrier") \ | |
148 \ | |
149 develop(bool, G1RSBarrierNullFilter, true, \ | |
150 "If true, generate null-pointer filtering code in RS barrier") \ | |
151 \ | |
152 develop(bool, G1PrintCTFilterStats, false, \ | |
153 "If true, print stats on RS filtering effectiveness") \ | |
154 \ | |
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155 develop(bool, G1DeferredRSUpdate, true, \ |
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156 "If true, use deferred RS updates") \ |
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157 \ |
342 | 158 develop(bool, G1RSLogCheckCardTable, false, \ |
159 "If true, verify that no dirty cards remain after RS log " \ | |
160 "processing.") \ | |
161 \ | |
162 develop(bool, G1RSCountHisto, false, \ | |
163 "If true, print a histogram of RS occupancies after each pause") \ | |
164 \ | |
165 develop(intx, G1PrintRegionLivenessInfo, 0, \ | |
166 "When > 0, print the occupancies of the <n> best and worst" \ | |
167 "regions.") \ | |
168 \ | |
169 develop(bool, G1PrintParCleanupStats, false, \ | |
170 "When true, print extra stats about parallel cleanup.") \ | |
171 \ | |
172 develop(bool, G1DisablePreBarrier, false, \ | |
173 "Disable generation of pre-barrier (i.e., marking barrier) ") \ | |
174 \ | |
175 develop(bool, G1DisablePostBarrier, false, \ | |
176 "Disable generation of post-barrier (i.e., RS barrier) ") \ | |
177 \ | |
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178 product(intx, G1UpdateBufferSize, 256, \ |
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179 "Size of an update buffer") \ |
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180 \ |
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181 product(intx, G1UpdateBufferQueueProcessingThreshold, 5, \ |
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182 "Number of enqueued update buffers that will " \ |
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183 "trigger concurrent processing") \ |
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184 \ |
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185 product(intx, G1UpdateBufferQueueMaxLength, 30, \ |
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186 "Maximum number of enqueued update buffers before mutator " \ |
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187 "threads start processing new ones instead of enqueueing them") \ |
342 | 188 \ |
189 develop(intx, G1ConcRSLogCacheSize, 10, \ | |
190 "Log base 2 of the length of conc RS hot-card cache.") \ | |
191 \ | |
751 | 192 develop(intx, G1ConcRSHotCardLimit, 4, \ |
342 | 193 "The threshold that defines (>=) a hot card.") \ |
194 \ | |
195 develop(bool, G1PrintOopAppls, false, \ | |
196 "When true, print applications of closures to external locs.") \ | |
197 \ | |
751 | 198 develop(intx, G1LogRSRegionEntries, 7, \ |
342 | 199 "Log_2 of max number of regions for which we keep bitmaps.") \ |
200 \ | |
201 develop(bool, G1RecordHRRSOops, false, \ | |
202 "When true, record recent calls to rem set operations.") \ | |
203 \ | |
204 develop(bool, G1RecordHRRSEvents, false, \ | |
205 "When true, record recent calls to rem set operations.") \ | |
206 \ | |
207 develop(intx, G1MaxVerifyFailures, -1, \ | |
208 "The maximum number of verification failrues to print. " \ | |
209 "-1 means print all.") \ | |
210 \ | |
211 develop(bool, G1ScrubRemSets, true, \ | |
212 "When true, do RS scrubbing after cleanup.") \ | |
213 \ | |
214 develop(bool, G1RSScrubVerbose, false, \ | |
215 "When true, do RS scrubbing with verbose output.") \ | |
216 \ | |
217 develop(bool, G1YoungSurvRateVerbose, false, \ | |
218 "print out the survival rate of young regions according to age.") \ | |
219 \ | |
220 develop(intx, G1YoungSurvRateNumRegionsSummary, 0, \ | |
221 "the number of regions for which we'll print a surv rate " \ | |
222 "summary.") \ | |
223 \ | |
224 product(bool, G1UseScanOnlyPrefix, false, \ | |
225 "It determines whether the system will calculate an optimum " \ | |
226 "scan-only set.") \ | |
227 \ | |
751 | 228 product(intx, G1MinReservePercent, 10, \ |
342 | 229 "It determines the minimum reserve we should have in the heap " \ |
230 "to minimize the probability of promotion failure.") \ | |
231 \ | |
751 | 232 diagnostic(bool, G1PrintRegions, false, \ |
342 | 233 "If set G1 will print information on which regions are being " \ |
234 "allocated and which are reclaimed.") \ | |
235 \ | |
236 develop(bool, G1HRRSUseSparseTable, true, \ | |
237 "When true, use sparse table to save space.") \ | |
238 \ | |
239 develop(bool, G1HRRSFlushLogBuffersOnVerify, false, \ | |
240 "Forces flushing of log buffers before verification.") \ | |
241 \ | |
751 | 242 product(bool, G1UseSurvivorSpaces, true, \ |
545 | 243 "When true, use survivor space.") \ |
244 \ | |
751 | 245 develop(bool, G1FixedTenuringThreshold, false, \ |
545 | 246 "When set, G1 will not adjust the tenuring threshold") \ |
247 \ | |
751 | 248 develop(bool, G1FixedEdenSize, false, \ |
545 | 249 "When set, G1 will not allocate unused survivor space regions") \ |
250 \ | |
751 | 251 develop(uintx, G1FixedSurvivorSpaceSize, 0, \ |
545 | 252 "If non-0 is the size of the G1 survivor space, " \ |
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253 "otherwise SurvivorRatio is used to determine the size") \ |
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254 \ |
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255 product(uintx, G1HeapRegionSize, 0, \ |
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256 "Size of the G1 regions.") \ |
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257 \ |
751 | 258 experimental(bool, G1ParallelRSetUpdatingEnabled, false, \ |
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259 "Enables the parallelization of remembered set updating " \ |
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260 "during evacuation pauses") \ |
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261 \ |
751 | 262 experimental(bool, G1ParallelRSetScanningEnabled, false, \ |
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263 "Enables the parallelization of remembered set scanning " \ |
794 | 264 "during evacuation pauses") \ |
265 \ | |
266 product(uintx, G1ParallelRSetThreads, 0, \ | |
267 "If non-0 is the number of parallel rem set update threads, " \ | |
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268 "otherwise the value is determined ergonomically.") \ |
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269 \ |
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270 develop(intx, G1CardCountCacheExpandThreshold, 16, \ |
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271 "Expand the card count cache if the number of collisions for " \ |
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272 "a particular entry exceeds this value.") \ |
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273 \ |
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274 develop(bool, G1VerifyCTCleanup, false, \ |
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275 "Verify card table cleanup.") |
342 | 276 |
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277 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) |