Mercurial > hg > truffle
diff src/share/vm/oops/klass.hpp @ 12056:740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
8016729: ObjectAlignmentInBytes=16 now forces the use of heap based compressed oops
8005933: The -Xshare:auto option is ignored for -server
Summary: Move klass metaspace above the heap and support CDS with compressed klass ptrs.
Reviewed-by: coleenp, kvn, mgerdin, tschatzl, stefank
| author | hseigel |
|---|---|
| date | Thu, 15 Aug 2013 20:04:10 -0400 |
| parents | 71180a6e5080 |
| children | 58fc8e2b7b6d b51aee2dd8bb |
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--- a/src/share/vm/oops/klass.hpp Wed Aug 14 15:12:00 2013 -0700 +++ b/src/share/vm/oops/klass.hpp Thu Aug 15 20:04:10 2013 -0400 @@ -703,6 +703,16 @@ 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);