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/* -----------------------------------------------------------------------------
*
* (c) The GHC Team, 1998-2004
*
* Stable Pointers
*
* ---------------------------------------------------------------------------*/
#ifndef RTS_STABLE_H
#define RTS_STABLE_H
EXTERN_INLINE StgPtr deRefStablePtr (StgStablePtr stable_ptr);
StgStablePtr getStablePtr (StgPtr p);
/* -----------------------------------------------------------------------------
PRIVATE from here.
-------------------------------------------------------------------------- */
typedef struct {
StgPtr addr; /* Haskell object, free list, or NULL */
StgPtr old; /* old Haskell object, used during GC */
StgWord ref; /* used for reference counting */
StgClosure *sn_obj; /* the StableName object (or NULL) */
} snEntry;
extern DLL_IMPORT_RTS snEntry *stable_ptr_table;
EXTERN_INLINE
StgPtr deRefStablePtr(StgStablePtr sp)
{
ASSERT(stable_ptr_table[(StgWord)sp].ref > 0);
return stable_ptr_table[(StgWord)sp].addr;
}
#endif /* RTS_STABLE_H */
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