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8003424: Enable Class Data Sharing for CompressedOops

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8016729: ObjectAlignmentInBytes=16 now forces the use of heap based compressed oops
8005933: The -Xshare:auto option is ignored for -server

Move klass metaspace above the heap and support CDS with compressed klass ptrs.

Reviewed-by: coleenp, kvn, mgerdin, tschatzl, stefank
This commit is contained in:
Harold Seigel 2013-08-15 20:04:10 -04:00
parent 9d372e7801
commit 4d91f4e69d
34 changed files with 876 additions and 552 deletions
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10
hotspot/src/share/vm/oops/klass.hpp
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@ -703,6 +703,16 @@ class Klass : public Metadata {
virtual void oop_verify_on(oop obj, outputStream* st);
static bool is_null(narrowKlass obj);
static bool is_null(Klass* obj);
// klass encoding for klass pointer in objects.
static narrowKlass encode_klass_not_null(Klass* v);
static narrowKlass encode_klass(Klass* v);
static Klass* decode_klass_not_null(narrowKlass v);
static Klass* decode_klass(narrowKlass v);
private:
// barriers used by klass_oop_store
void klass_update_barrier_set(oop v);