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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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4
hotspot/src/share/vm/gc_implementation/shared/mutableNUMASpace.cpp
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@ -761,7 +761,7 @@ HeapWord* MutableNUMASpace::allocate(size_t size) {
if (p != NULL) {
size_t remainder = s->free_in_words();
if (remainder < (size_t)oopDesc::header_size() && remainder > 0) {
if (remainder < CollectedHeap::min_fill_size() && remainder > 0) {
s->set_top(s->top() - size);
p = NULL;
}
@ -803,7 +803,7 @@ HeapWord* MutableNUMASpace::cas_allocate(size_t size) {
HeapWord *p = s->cas_allocate(size);
if (p != NULL) {
size_t remainder = pointer_delta(s->end(), p + size);
if (remainder < (size_t)oopDesc::header_size() && remainder > 0) {
if (remainder < CollectedHeap::min_fill_size() && remainder > 0) {
if (s->cas_deallocate(p, size)) {
// We were the last to allocate and created a fragment less than
// a minimal object.