src/share/vm/oops/oop.hpp

rev 7183 : autospecialized oop_iterate using SFINAE and templates

*** 25,38 ****
  #ifndef SHARE_VM_OOPS_OOP_HPP
  #define SHARE_VM_OOPS_OOP_HPP
  
  #include "memory/iterator.hpp"
  #include "memory/memRegion.hpp"
! #include "memory/specialized_oop_closures.hpp"
  #include "oops/metadata.hpp"
  #include "utilities/macros.hpp"
  #include "utilities/top.hpp"
  
  // oopDesc is the top baseclass for objects classes.  The {name}Desc classes describe
  // the format of Java objects so the fields can be accessed from C++.
  // oopDesc is abstract.
  // (see oopHierarchy for complete oop class hierarchy)
--- 25,39 ----
  #ifndef SHARE_VM_OOPS_OOP_HPP
  #define SHARE_VM_OOPS_OOP_HPP
  
  #include "memory/iterator.hpp"
  #include "memory/memRegion.hpp"
! #include "memory/specialized_oop_closures.inline.hpp"
  #include "oops/metadata.hpp"
  #include "utilities/macros.hpp"
  #include "utilities/top.hpp"
+ #include "utilities/templateIdioms.hpp"
  
  // oopDesc is the top baseclass for objects classes.  The {name}Desc classes describe
  // the format of Java objects so the fields can be accessed from C++.
  // oopDesc is abstract.
  // (see oopHierarchy for complete oop class hierarchy)
*** 334,344 ****
--- 335,368 ----
  
    // Fast access to barrier set
    static BarrierSet* bs()            { return _bs; }
    static void set_bs(BarrierSet* bs) { _bs = bs; }
  
+ private:
+   // Dispatch member functions to oop closures
+ 
+   template <class OopClosureType>
+   typename enable_if<is_kind_of<ExtendedOopClosure, OopClosureType>::value, void>::type
+   do_metadata_if_applicable(OopClosureType *cl);
+ 
+   template <class OopClosureType>
+   typename enable_if<!is_kind_of<ExtendedOopClosure, OopClosureType>::value, void>::type
+   do_metadata_if_applicable(OopClosureType *cl);
+ 
+   template <class OopClosureType>
+   int oop_iterate_dispatch_tag(OopClosureType *blk, DispatchTag tag);
+ 
+   template <class OopClosureType>
+   int oop_iterate_internal(OopClosureType *blk);
+ 
+ public:
+   template <class OopClosureType>
+   typename enable_if<is_kind_of<ExtendedOopClosure, OopClosureType>::value, int>::type
+   oop_iterate(OopClosureType *blk);
+ 
    // iterators, returns size of object
+ 
  #define OOP_ITERATE_DECL(OopClosureType, nv_suffix)                      \
    int oop_iterate(OopClosureType* blk);                                  \
    int oop_iterate(OopClosureType* blk, MemRegion mr);  // Only in mr.
  
    ALL_OOP_OOP_ITERATE_CLOSURES_1(OOP_ITERATE_DECL)
*** 351,361 ****
  
    ALL_OOP_OOP_ITERATE_CLOSURES_1(OOP_ITERATE_BACKWARDS_DECL)
    ALL_OOP_OOP_ITERATE_CLOSURES_2(OOP_ITERATE_BACKWARDS_DECL)
  #endif
  
!   int oop_iterate_no_header(OopClosure* bk);
    int oop_iterate_no_header(OopClosure* bk, MemRegion mr);
  
    // identity hash; returns the identity hash key (computes it if necessary)
    // NOTE with the introduction of UseBiasedLocking that identity_hash() might reach a
    // safepoint if called on a biased object. Calling code must be aware of that.
--- 375,388 ----
  
    ALL_OOP_OOP_ITERATE_CLOSURES_1(OOP_ITERATE_BACKWARDS_DECL)
    ALL_OOP_OOP_ITERATE_CLOSURES_2(OOP_ITERATE_BACKWARDS_DECL)
  #endif
  
!   template <class OopClosureType>
!   typename enable_if<is_kind_of<OopClosure, OopClosureType>::value, int>::type
!   oop_iterate_no_header(OopClosureType* bk);
!   
    int oop_iterate_no_header(OopClosure* bk, MemRegion mr);
  
    // identity hash; returns the identity hash key (computes it if necessary)
    // NOTE with the introduction of UseBiasedLocking that identity_hash() might reach a
    // safepoint if called on a biased object. Calling code must be aware of that.