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8040804: G1: Concurrent mark stuck in loop calling os::elapsedVTime()

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Reviewed-by: brutisso, tschatzl
This commit is contained in:
Per Lidén 2014-05-14 14:32:23 +02:00
parent 3f35cb0ca0
commit 04341bfffb
2 changed files with 7 additions and 3 deletions
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8
hotspot/src/share/vm/gc_implementation/g1/concurrentMark.hpp
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@ -542,8 +542,12 @@ protected:
// frequently.
HeapRegion* claim_region(uint worker_id);
// It determines whether we've run out of regions to scan
bool out_of_regions() { return _finger == _heap_end; }
// It determines whether we've run out of regions to scan. Note that
// the finger can point past the heap end in case the heap was expanded
// to satisfy an allocation without doing a GC. This is fine, because all
// objects in those regions will be considered live anyway because of
// SATB guarantees (i.e. their TAMS will be equal to bottom).
bool out_of_regions() { return _finger >= _heap_end; }
// Returns the task with the given id
CMTask* task(int id) {