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comparison src/share/vm/runtime/globals.hpp @ 10287:12f651e29f6b

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6843347: Boundary values in some public GC options cause crashes Summary: Setting some public integer options to specific values causes crashes or undefined GC behavior. This patchset adds the necessary argument checking for these options. Reviewed-by: jmasa, brutisso
author tschatzl
date Wed, 15 May 2013 11:05:09 +0200
parents d17700c82d7d
children 2958af1d8c5a
comparison
equal deleted inserted replaced
10286:0a2986f36965 10287:12f651e29f6b
284 CounterSetting(intx* cnt) { counter = cnt; (*counter)++; } 284 CounterSetting(intx* cnt) { counter = cnt; (*counter)++; }
285 ~CounterSetting() { (*counter)--; } 285 ~CounterSetting() { (*counter)--; }
286 }; 286 };
287 287
288 288
289 class IntFlagSetting { 289 class UIntFlagSetting {
290 intx val; 290 uintx val;
291 intx* flag; 291 uintx* flag;
292 public: 292 public:
293 IntFlagSetting(intx& fl, intx newValue) { flag = &fl; val = fl; fl = newValue; } 293 UIntFlagSetting(uintx& fl, uintx newValue) { flag = &fl; val = fl; fl = newValue; }
294 ~IntFlagSetting() { *flag = val; } 294 ~UIntFlagSetting() { *flag = val; }
295 }; 295 };
296 296
297 297
298 class DoubleFlagSetting { 298 class DoubleFlagSetting {
299 double val; 299 double val;
511 "Granularity to use for NUMA interleaving on Windows OS") \ 511 "Granularity to use for NUMA interleaving on Windows OS") \
512 \ 512 \
513 product(bool, ForceNUMA, false, \ 513 product(bool, ForceNUMA, false, \
514 "Force NUMA optimizations on single-node/UMA systems") \ 514 "Force NUMA optimizations on single-node/UMA systems") \
515 \ 515 \
516 product(intx, NUMAChunkResizeWeight, 20, \ 516 product(uintx, NUMAChunkResizeWeight, 20, \
517 "Percentage (0-100) used to weight the current sample when " \ 517 "Percentage (0-100) used to weigh the current sample when " \
518 "computing exponentially decaying average for " \ 518 "computing exponentially decaying average for " \
519 "AdaptiveNUMAChunkSizing") \ 519 "AdaptiveNUMAChunkSizing") \
520 \ 520 \
521 product(intx, NUMASpaceResizeRate, 1*G, \ 521 product(uintx, NUMASpaceResizeRate, 1*G, \
522 "Do not reallocate more that this amount per collection") \ 522 "Do not reallocate more that this amount per collection") \
523 \ 523 \
524 product(bool, UseAdaptiveNUMAChunkSizing, true, \ 524 product(bool, UseAdaptiveNUMAChunkSizing, true, \
525 "Enable adaptive chunk sizing for NUMA") \ 525 "Enable adaptive chunk sizing for NUMA") \
526 \ 526 \
527 product(bool, NUMAStats, false, \ 527 product(bool, NUMAStats, false, \
528 "Print NUMA stats in detailed heap information") \ 528 "Print NUMA stats in detailed heap information") \
529 \ 529 \
530 product(intx, NUMAPageScanRate, 256, \ 530 product(uintx, NUMAPageScanRate, 256, \
531 "Maximum number of pages to include in the page scan procedure") \ 531 "Maximum number of pages to include in the page scan procedure") \
532 \ 532 \
533 product_pd(bool, NeedsDeoptSuspend, \ 533 product_pd(bool, NeedsDeoptSuspend, \
534 "True for register window machines (sparc/ia64)") \ 534 "True for register window machines (sparc/ia64)") \
535 \ 535 \
713 "Bump the number of file descriptors to max in solaris.") \ 713 "Bump the number of file descriptors to max in solaris.") \
714 \ 714 \
715 diagnostic(bool, LogEvents, true, \ 715 diagnostic(bool, LogEvents, true, \
716 "Enable the various ring buffer event logs") \ 716 "Enable the various ring buffer event logs") \
717 \ 717 \
718 diagnostic(intx, LogEventsBufferEntries, 10, \ 718 diagnostic(uintx, LogEventsBufferEntries, 10, \
719 "Enable the various ring buffer event logs") \ 719 "Enable the various ring buffer event logs") \
720 \ 720 \
721 product(bool, BytecodeVerificationRemote, true, \ 721 product(bool, BytecodeVerificationRemote, true, \
722 "Enables the Java bytecode verifier for remote classes") \ 722 "Enables the Java bytecode verifier for remote classes") \
723 \ 723 \
1430 "Use parallel threads in the new generation.") \ 1430 "Use parallel threads in the new generation.") \
1431 \ 1431 \
1432 product(bool, ParallelGCVerbose, false, \ 1432 product(bool, ParallelGCVerbose, false, \
1433 "Verbose output for parallel GC.") \ 1433 "Verbose output for parallel GC.") \
1434 \ 1434 \
1435 product(intx, ParallelGCBufferWastePct, 10, \ 1435 product(uintx, ParallelGCBufferWastePct, 10, \
1436 "wasted fraction of parallel allocation buffer.") \ 1436 "Wasted fraction of parallel allocation buffer.") \
1437 \ 1437 \
1438 diagnostic(bool, ParallelGCRetainPLAB, false, \ 1438 diagnostic(bool, ParallelGCRetainPLAB, false, \
1439 "Retain parallel allocation buffers across scavenges; " \ 1439 "Retain parallel allocation buffers across scavenges; " \
1440 " -- disabled because this currently conflicts with " \ 1440 " -- disabled because this currently conflicts with " \
1441 " parallel card scanning under certain conditions ") \ 1441 " parallel card scanning under certain conditions ") \
1442 \ 1442 \
1443 product(intx, TargetPLABWastePct, 10, \ 1443 product(uintx, TargetPLABWastePct, 10, \
1444 "target wasted space in last buffer as pct of overall allocation")\ 1444 "Target wasted space in last buffer as percent of overall " \
1445 "allocation") \
1445 \ 1446 \
1446 product(uintx, PLABWeight, 75, \ 1447 product(uintx, PLABWeight, 75, \
1447 "Percentage (0-100) used to weight the current sample when" \ 1448 "Percentage (0-100) used to weight the current sample when" \
1448 "computing exponentially decaying average for ResizePLAB.") \ 1449 "computing exponentially decaying average for ResizePLAB.") \
1449 \ 1450 \
1517 " during a scavenge") \ 1518 " during a scavenge") \
1518 \ 1519 \
1519 product(bool, AlwaysPreTouch, false, \ 1520 product(bool, AlwaysPreTouch, false, \
1520 "It forces all freshly committed pages to be pre-touched.") \ 1521 "It forces all freshly committed pages to be pre-touched.") \
1521 \ 1522 \
1522 product_pd(intx, CMSYoungGenPerWorker, \ 1523 product_pd(uintx, CMSYoungGenPerWorker, \
1523 "The maximum size of young gen chosen by default per GC worker " \ 1524 "The maximum size of young gen chosen by default per GC worker " \
1524 "thread available") \ 1525 "thread available") \
1525 \ 1526 \
1526 product(bool, CMSIncrementalMode, false, \ 1527 product(bool, CMSIncrementalMode, false, \
1527 "Whether CMS GC should operate in \"incremental\" mode") \ 1528 "Whether CMS GC should operate in \"incremental\" mode") \
1835 "denotes 'do constant GC cycles'.") \ 1836 "denotes 'do constant GC cycles'.") \
1836 \ 1837 \
1837 product(bool, UseCMSInitiatingOccupancyOnly, false, \ 1838 product(bool, UseCMSInitiatingOccupancyOnly, false, \
1838 "Only use occupancy as a crierion for starting a CMS collection") \ 1839 "Only use occupancy as a crierion for starting a CMS collection") \
1839 \ 1840 \
1840 product(intx, CMSIsTooFullPercentage, 98, \ 1841 product(uintx, CMSIsTooFullPercentage, 98, \
1841 "An absolute ceiling above which CMS will always consider the " \ 1842 "An absolute ceiling above which CMS will always consider the " \
1842 "unloading of classes when class unloading is enabled") \ 1843 "unloading of classes when class unloading is enabled") \
1843 \ 1844 \
1844 develop(bool, CMSTestInFreeList, false, \ 1845 develop(bool, CMSTestInFreeList, false, \
1845 "Check if the coalesced range is already in the " \ 1846 "Check if the coalesced range is already in the " \
1874 "(other young collectors) ") \ 1875 "(other young collectors) ") \
1875 \ 1876 \
1876 develop(uintx, PromotionFailureALotInterval, 5, \ 1877 develop(uintx, PromotionFailureALotInterval, 5, \
1877 "Total collections between promotion failures alot") \ 1878 "Total collections between promotion failures alot") \
1878 \ 1879 \
1879 experimental(intx, WorkStealingSleepMillis, 1, \ 1880 experimental(uintx, WorkStealingSleepMillis, 1, \
1880 "Sleep time when sleep is used for yields") \ 1881 "Sleep time when sleep is used for yields") \
1881 \ 1882 \
1882 experimental(uintx, WorkStealingYieldsBeforeSleep, 5000, \ 1883 experimental(uintx, WorkStealingYieldsBeforeSleep, 5000, \
1883 "Number of yields before a sleep is done during workstealing") \ 1884 "Number of yields before a sleep is done during workstealing") \
1884 \ 1885 \
2018 \ 2019 \
2019 develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \ 2020 develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \
2020 "Number of collections before the adaptive sizing is started") \ 2021 "Number of collections before the adaptive sizing is started") \
2021 \ 2022 \
2022 product(uintx, AdaptiveSizePolicyOutputInterval, 0, \ 2023 product(uintx, AdaptiveSizePolicyOutputInterval, 0, \
2023 "Collecton interval for printing information; zero => never") \ 2024 "Collection interval for printing information; zero means never") \
2024 \ 2025 \
2025 product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \ 2026 product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \
2026 "Use adaptive minimum footprint as a goal") \ 2027 "Use adaptive minimum footprint as a goal") \
2027 \ 2028 \
2028 product(uintx, AdaptiveSizePolicyWeight, 10, \ 2029 product(uintx, AdaptiveSizePolicyWeight, 10, \
3047 "Max percentage of Metaspace free after GC to avoid shrinking") \ 3048 "Max percentage of Metaspace free after GC to avoid shrinking") \
3048 \ 3049 \
3049 product(uintx, MaxMetaspaceExpansion, ScaleForWordSize(4*M), \ 3050 product(uintx, MaxMetaspaceExpansion, ScaleForWordSize(4*M), \
3050 "Max expansion of Metaspace without full GC (in bytes)") \ 3051 "Max expansion of Metaspace without full GC (in bytes)") \
3051 \ 3052 \
3052 product(intx, QueuedAllocationWarningCount, 0, \ 3053 product(uintx, QueuedAllocationWarningCount, 0, \
3053 "Number of times an allocation that queues behind a GC " \ 3054 "Number of times an allocation that queues behind a GC " \
3054 "will retry before printing a warning") \ 3055 "will retry before printing a warning") \
3055 \ 3056 \
3056 diagnostic(uintx, VerifyGCStartAt, 0, \ 3057 diagnostic(uintx, VerifyGCStartAt, 0, \
3057 "GC invoke count where +VerifyBefore/AfterGC kicks in") \ 3058 "GC invoke count where +VerifyBefore/AfterGC kicks in") \
3075 "Par compact uses a variable scale based on the density of the" \ 3076 "Par compact uses a variable scale based on the density of the" \
3076 "generation and treats this as the max value when the heap is" \ 3077 "generation and treats this as the max value when the heap is" \
3077 "either completely full or completely empty. Par compact also" \ 3078 "either completely full or completely empty. Par compact also" \
3078 "has a smaller default value; see arguments.cpp.") \ 3079 "has a smaller default value; see arguments.cpp.") \
3079 \ 3080 \
3080 product(intx, MarkSweepAlwaysCompactCount, 4, \ 3081 product(uintx, MarkSweepAlwaysCompactCount, 4, \
3081 "How often should we fully compact the heap (ignoring the dead " \ 3082 "How often should we fully compact the heap (ignoring the dead " \
3082 "space parameters)") \ 3083 "space parameters)") \
3083 \ 3084 \
3084 product(intx, PrintCMSStatistics, 0, \ 3085 product(intx, PrintCMSStatistics, 0, \
3085 "Statistics for CMS") \ 3086 "Statistics for CMS") \