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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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14
hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.hpp
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@ -1138,7 +1138,7 @@ class ConcurrentMarkSweepGeneration: public CardGeneration {
// Allocation support
HeapWord* allocate(size_t size, bool tlab);
HeapWord* have_lock_and_allocate(size_t size, bool tlab);
oop promote(oop obj, size_t obj_size, oop* ref);
oop promote(oop obj, size_t obj_size);
HeapWord* par_allocate(size_t size, bool tlab) {
return allocate(size, tlab);
}
@ -1301,9 +1301,8 @@ class ASConcurrentMarkSweepGeneration : public ConcurrentMarkSweepGeneration {
// This closure is used to check that a certain set of oops is empty.
class FalseClosure: public OopClosure {
public:
void do_oop(oop* p) {
guarantee(false, "Should be an empty set");
}
void do_oop(oop* p) { guarantee(false, "Should be an empty set"); }
void do_oop(narrowOop* p) { guarantee(false, "Should be an empty set"); }
};
// This closure is used to do concurrent marking from the roots
@ -1380,6 +1379,12 @@ class PushAndMarkVerifyClosure: public OopClosure {
CMSBitMap* _verification_bm;
CMSBitMap* _cms_bm;
CMSMarkStack* _mark_stack;
protected:
void do_oop(oop p);
template <class T> inline void do_oop_work(T *p) {
oop obj = oopDesc::load_decode_heap_oop_not_null(p);
do_oop(obj);
}
public:
PushAndMarkVerifyClosure(CMSCollector* cms_collector,
MemRegion span,
@ -1387,6 +1392,7 @@ class PushAndMarkVerifyClosure: public OopClosure {
CMSBitMap* cms_bm,
CMSMarkStack* mark_stack);
void do_oop(oop* p);
void do_oop(narrowOop* p);
// Deal with a stack overflow condition
void handle_stack_overflow(HeapWord* lost);
};