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7059037: Use BIS for zeroing on T4

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Use BIS for zeroing new allocated big (2Kb and more) objects and arrays.

Reviewed-by: never, twisti, ysr
This commit is contained in:
Vladimir Kozlov 2011-08-26 08:52:22 -07:00
parent 19f7fb98b8
commit 6446205688
14 changed files with 232 additions and 35 deletions
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5
hotspot/src/share/vm/gc_interface/collectedHeap.inline.hpp
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@ -287,7 +287,10 @@ oop CollectedHeap::permanent_obj_allocate_no_klass_install(KlassHandle klass,
assert(size >= 0, "int won't convert to size_t");
HeapWord* obj = common_permanent_mem_allocate_init(size, CHECK_NULL);
post_allocation_setup_no_klass_install(klass, obj, size);
NOT_PRODUCT(Universe::heap()->check_for_bad_heap_word_value(obj, size));
#ifndef PRODUCT
const size_t hs = oopDesc::header_size();
Universe::heap()->check_for_bad_heap_word_value(obj+hs, size-hs);
#endif
return (oop)obj;
}