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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/memory/sharedHeap.cpp
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@ -74,9 +74,10 @@ void SharedHeap::set_par_threads(int t) {
class AssertIsPermClosure: public OopClosure {
public:
void do_oop(oop* p) {
virtual void do_oop(oop* p) {
assert((*p) == NULL || (*p)->is_perm(), "Referent should be perm.");
}
virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); }
};
static AssertIsPermClosure assert_is_perm_closure;
@ -187,12 +188,13 @@ class SkipAdjustingSharedStrings: public OopClosure {
public:
SkipAdjustingSharedStrings(OopClosure* clo) : _clo(clo) {}
void do_oop(oop* p) {
virtual void do_oop(oop* p) {
oop o = (*p);
if (!o->is_shared_readwrite()) {
_clo->do_oop(p);
}
}
virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); }
};
// Unmarked shared Strings in the StringTable (which got there due to