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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes

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Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv

Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold
This commit is contained in:
Coleen Phillimore 2008-04-13 17:43:42 -04:00
parent 680ecf1611
commit 4a831d45f0
273 changed files with 6585 additions and 2993 deletions
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6
hotspot/src/share/vm/gc_implementation/parallelScavenge/psPromotionLAB.cpp
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@ -25,7 +25,7 @@
#include "incls/_precompiled.incl"
#include "incls/_psPromotionLAB.cpp.incl"
const size_t PSPromotionLAB::filler_header_size = align_object_size(typeArrayOopDesc::header_size(T_INT));
size_t PSPromotionLAB::filler_header_size;
// This is the shared initialization code. It sets up the basic pointers,
// and allows enough extra space for a filler object. We call a virtual
@ -41,6 +41,10 @@ void PSPromotionLAB::initialize(MemRegion lab) {
set_end(end);
set_top(bottom);
// Initialize after VM starts up because header_size depends on compressed
// oops.
filler_header_size = align_object_size(typeArrayOopDesc::header_size(T_INT));
// We can be initialized to a zero size!
if (free() > 0) {
if (ZapUnusedHeapArea) {