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6843347: Boundary values in some public GC options cause crashes

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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
This commit is contained in:
Thomas Schatzl 2013-05-15 11:05:09 +02:00
parent 9ce9586188
commit 8d53e75550
12 changed files with 116 additions and 39 deletions
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41
hotspot/src/share/vm/runtime/globals.hpp
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@ -286,12 +286,12 @@ class CounterSetting {
};
class IntFlagSetting {
intx val;
intx* flag;
class UIntFlagSetting {
uintx val;
uintx* flag;
public:
IntFlagSetting(intx& fl, intx newValue) { flag = &fl; val = fl; fl = newValue; }
~IntFlagSetting() { *flag = val; }
UIntFlagSetting(uintx& fl, uintx newValue) { flag = &fl; val = fl; fl = newValue; }
~UIntFlagSetting() { *flag = val; }
};
@ -513,12 +513,12 @@ class CommandLineFlags {
product(bool, ForceNUMA, false, \
"Force NUMA optimizations on single-node/UMA systems") \
\
product(intx, NUMAChunkResizeWeight, 20, \
"Percentage (0-100) used to weight the current sample when " \
product(uintx, NUMAChunkResizeWeight, 20, \
"Percentage (0-100) used to weigh the current sample when " \
"computing exponentially decaying average for " \
"AdaptiveNUMAChunkSizing") \
\
product(intx, NUMASpaceResizeRate, 1*G, \
product(uintx, NUMASpaceResizeRate, 1*G, \
"Do not reallocate more that this amount per collection") \
\
product(bool, UseAdaptiveNUMAChunkSizing, true, \
@ -527,7 +527,7 @@ class CommandLineFlags {
product(bool, NUMAStats, false, \
"Print NUMA stats in detailed heap information") \
\
product(intx, NUMAPageScanRate, 256, \
product(uintx, NUMAPageScanRate, 256, \
"Maximum number of pages to include in the page scan procedure") \
\
product_pd(bool, NeedsDeoptSuspend, \
@ -715,7 +715,7 @@ class CommandLineFlags {
diagnostic(bool, LogEvents, true, \
"Enable the various ring buffer event logs") \
\
diagnostic(intx, LogEventsBufferEntries, 10, \
diagnostic(uintx, LogEventsBufferEntries, 10, \
"Enable the various ring buffer event logs") \
\
product(bool, BytecodeVerificationRemote, true, \
@ -1432,16 +1432,17 @@ class CommandLineFlags {
product(bool, ParallelGCVerbose, false, \
"Verbose output for parallel GC.") \
\
product(intx, ParallelGCBufferWastePct, 10, \
"wasted fraction of parallel allocation buffer.") \
product(uintx, ParallelGCBufferWastePct, 10, \
"Wasted fraction of parallel allocation buffer.") \
\
diagnostic(bool, ParallelGCRetainPLAB, false, \
"Retain parallel allocation buffers across scavenges; " \
" -- disabled because this currently conflicts with " \
" parallel card scanning under certain conditions ") \
\
product(intx, TargetPLABWastePct, 10, \
"target wasted space in last buffer as pct of overall allocation")\
product(uintx, TargetPLABWastePct, 10, \
"Target wasted space in last buffer as percent of overall " \
"allocation") \
\
product(uintx, PLABWeight, 75, \
"Percentage (0-100) used to weight the current sample when" \
@ -1519,7 +1520,7 @@ class CommandLineFlags {
product(bool, AlwaysPreTouch, false, \
"It forces all freshly committed pages to be pre-touched.") \
\
product_pd(intx, CMSYoungGenPerWorker, \
product_pd(uintx, CMSYoungGenPerWorker, \
"The maximum size of young gen chosen by default per GC worker " \
"thread available") \
\
@ -1837,7 +1838,7 @@ class CommandLineFlags {
product(bool, UseCMSInitiatingOccupancyOnly, false, \
"Only use occupancy as a crierion for starting a CMS collection") \
\
product(intx, CMSIsTooFullPercentage, 98, \
product(uintx, CMSIsTooFullPercentage, 98, \
"An absolute ceiling above which CMS will always consider the " \
"unloading of classes when class unloading is enabled") \
\
@ -1876,7 +1877,7 @@ class CommandLineFlags {
develop(uintx, PromotionFailureALotInterval, 5, \
"Total collections between promotion failures alot") \
\
experimental(intx, WorkStealingSleepMillis, 1, \
experimental(uintx, WorkStealingSleepMillis, 1, \
"Sleep time when sleep is used for yields") \
\
experimental(uintx, WorkStealingYieldsBeforeSleep, 5000, \
@ -2020,7 +2021,7 @@ class CommandLineFlags {
"Number of collections before the adaptive sizing is started") \
\
product(uintx, AdaptiveSizePolicyOutputInterval, 0, \
"Collecton interval for printing information; zero => never") \
"Collection interval for printing information; zero means never") \
\
product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \
"Use adaptive minimum footprint as a goal") \
@ -3049,7 +3050,7 @@ class CommandLineFlags {
product(uintx, MaxMetaspaceExpansion, ScaleForWordSize(4*M), \
"Max expansion of Metaspace without full GC (in bytes)") \
\
product(intx, QueuedAllocationWarningCount, 0, \
product(uintx, QueuedAllocationWarningCount, 0, \
"Number of times an allocation that queues behind a GC " \
"will retry before printing a warning") \
\
@ -3077,7 +3078,7 @@ class CommandLineFlags {
"either completely full or completely empty. Par compact also" \
"has a smaller default value; see arguments.cpp.") \
\
product(intx, MarkSweepAlwaysCompactCount, 4, \
product(uintx, MarkSweepAlwaysCompactCount, 4, \
"How often should we fully compact the heap (ignoring the dead " \
"space parameters)") \
\