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6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb

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Added new product ObjectAlignmentInBytes flag to control object alignment.

Reviewed-by: twisti, ysr, iveresov
This commit is contained in:
Vladimir Kozlov 2010-05-27 18:01:56 -07:00
parent 05b4f2e796
commit cc18a50e59
29 changed files with 222 additions and 136 deletions
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2
hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp
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@ -3644,7 +3644,7 @@ void G1CollectedHeap::par_allocate_remaining_space(HeapRegion* r) {
do {
free_words = r->free()/HeapWordSize;
// If there's too little space, no one can allocate, so we're done.
if (free_words < (size_t)oopDesc::header_size()) return;
if (free_words < CollectedHeap::min_fill_size()) return;
// Otherwise, try to claim it.
block = r->par_allocate(free_words);
} while (block == NULL);