832 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
833 value_offset;
834 }
835
836 // Debugging
837 friend class JavaClasses;
838 };
839
840
841
842 // Interface to java.lang.ref.Reference objects
843
844 class java_lang_ref_Reference: AllStatic {
845 public:
846 enum {
847 hc_referent_offset = 0,
848 hc_queue_offset = 1,
849 hc_next_offset = 2,
850 hc_discovered_offset = 3 // Is not last, see SoftRefs.
851 };
852 enum {
853 hc_static_lock_offset = 0,
854 hc_static_pending_offset = 1
855 };
856
857 static int referent_offset;
858 static int queue_offset;
859 static int next_offset;
860 static int discovered_offset;
861 static int static_lock_offset;
862 static int static_pending_offset;
863 static int number_of_fake_oop_fields;
864
865 // Accessors
866 static inline oop referent(oop ref);
867 static inline void set_referent(oop ref, oop value);
868 static inline void set_referent_raw(oop ref, oop value);
869 static inline HeapWord* referent_addr(oop ref);
870 static inline oop next(oop ref);
871 static inline void set_next(oop ref, oop value);
872 static inline void set_next_raw(oop ref, oop value);
873 static inline HeapWord* next_addr(oop ref);
874 static inline oop discovered(oop ref);
875 static inline void set_discovered(oop ref, oop value);
876 static inline void set_discovered_raw(oop ref, oop value);
877 static inline HeapWord* discovered_addr(oop ref);
878
879 // Accessors for statics
880 static oop pending_list_lock();
881 static oop pending_list();
882
883 static HeapWord* pending_list_lock_addr();
884 static HeapWord* pending_list_addr();
885 };
886
887
888 // Interface to java.lang.ref.SoftReference objects
889
890 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
891 public:
892 enum {
893 // The timestamp is a long field and may need to be adjusted for alignment.
894 hc_timestamp_offset = hc_discovered_offset + 1
895 };
896 enum {
897 hc_static_clock_offset = 0
898 };
899
900 static int timestamp_offset;
901 static int static_clock_offset;
902
903 // Accessors
904 static jlong timestamp(oop ref);
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832 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
833 value_offset;
834 }
835
836 // Debugging
837 friend class JavaClasses;
838 };
839
840
841
842 // Interface to java.lang.ref.Reference objects
843
844 class java_lang_ref_Reference: AllStatic {
845 public:
846 enum {
847 hc_referent_offset = 0,
848 hc_queue_offset = 1,
849 hc_next_offset = 2,
850 hc_discovered_offset = 3 // Is not last, see SoftRefs.
851 };
852
853 static int referent_offset;
854 static int queue_offset;
855 static int next_offset;
856 static int discovered_offset;
857 static int number_of_fake_oop_fields;
858
859 // Accessors
860 static inline oop referent(oop ref);
861 static inline void set_referent(oop ref, oop value);
862 static inline void set_referent_raw(oop ref, oop value);
863 static inline HeapWord* referent_addr(oop ref);
864 static inline oop next(oop ref);
865 static inline void set_next(oop ref, oop value);
866 static inline void set_next_raw(oop ref, oop value);
867 static inline HeapWord* next_addr(oop ref);
868 static inline oop discovered(oop ref);
869 static inline void set_discovered(oop ref, oop value);
870 static inline void set_discovered_raw(oop ref, oop value);
871 static inline HeapWord* discovered_addr(oop ref);
872 };
873
874
875 // Interface to java.lang.ref.SoftReference objects
876
877 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
878 public:
879 enum {
880 // The timestamp is a long field and may need to be adjusted for alignment.
881 hc_timestamp_offset = hc_discovered_offset + 1
882 };
883 enum {
884 hc_static_clock_offset = 0
885 };
886
887 static int timestamp_offset;
888 static int static_clock_offset;
889
890 // Accessors
891 static jlong timestamp(oop ref);
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