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8114823: G1 doesn't honor request to disable class unloading

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Reviewed-by: tschatzl, mgerdin
This commit is contained in:
Stefan Johansson 2016-09-12 16:34:36 +02:00
parent be6cc69504
commit f6a7898995
5 changed files with 191 additions and 19 deletions
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12
hotspot/src/share/vm/runtime/arguments.cpp
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@ -1665,11 +1665,6 @@ void Arguments::set_cms_and_parnew_gc_flags() {
CompactibleFreeListSpaceLAB::modify_initialization(OldPLABSize, OldPLABWeight);
}
if (!ClassUnloading) {
FLAG_SET_CMDLINE(bool, CMSClassUnloadingEnabled, false);
FLAG_SET_CMDLINE(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false);
}
log_trace(gc)("MarkStackSize: %uk MarkStackSizeMax: %uk", (unsigned int) (MarkStackSize / K), (uint) (MarkStackSizeMax / K));
}
#endif // INCLUDE_ALL_GCS
@ -1997,6 +1992,13 @@ void Arguments::set_gc_specific_flags() {
// Keeping the heap 100% free is hard ;-) so limit it to 99%.
FLAG_SET_ERGO(uintx, MinHeapFreeRatio, 99);
}
// If class unloading is disabled, also disable concurrent class unloading.
if (!ClassUnloading) {
FLAG_SET_CMDLINE(bool, CMSClassUnloadingEnabled, false);
FLAG_SET_CMDLINE(bool, ClassUnloadingWithConcurrentMark, false);
FLAG_SET_CMDLINE(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false);
}
#endif // INCLUDE_ALL_GCS
}