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6850846: G1: extend G1 marking verification

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Extend G1 marking verification to use either the "prev" or "next" marking information, as appropriate.

Reviewed-by: johnc, ysr
This commit is contained in:
Antonios Printezis 2009-06-12 16:20:16 -04:00
parent 24f3527be2
commit f741e2fceb
5 changed files with 117 additions and 33 deletions
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11
hotspot/src/share/vm/gc_implementation/g1/heapRegion.hpp
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@ -782,7 +782,16 @@ class HeapRegion: public G1OffsetTableContigSpace {
void print() const;
void print_on(outputStream* st) const;
// Override
// use_prev_marking == true -> use "prev" marking information,
// use_prev_marking == false -> use "next" marking information
// NOTE: Only the "prev" marking information is guaranteed to be
// consistent most of the time, so most calls to this should use
// use_prev_marking == true. Currently, there is only one case where
// this is called with use_prev_marking == false, which is to verify
// the "next" marking information at the end of remark.
void verify(bool allow_dirty, bool use_prev_marking) const;
// Override; it uses the "prev" marking information
virtual void verify(bool allow_dirty) const;
#ifdef DEBUG