sys/refcount.h File Reference

#include <sys/cdefs.h>
#include <sys/types.h>
#include <sys/list.h>
#include <sys/zfs_context.h>

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Data Structures
struct	refcount
Defines
#define	FTAG   ((char *)__func__)
	If the reference is held only by the calling function and not any particular object, use FTAG (which is a string) for the holder_tag.
#define	refcount_create(rc)   ((rc)->rc_count = 0)
#define	refcount_destroy(rc)   ((rc)->rc_count = 0)
#define	refcount_destroy_many(rc, number)   ((rc)->rc_count = 0)
#define	refcount_is_zero(rc)   ((rc)->rc_count == 0)
#define	refcount_count(rc)   ((rc)->rc_count)
#define	refcount_add(rc, holder)   atomic_add_64_nv(&(rc)->rc_count, 1)
#define	refcount_remove(rc, holder)   atomic_add_64_nv(&(rc)->rc_count, -1)
#define	refcount_add_many(rc, number, holder)   atomic_add_64_nv(&(rc)->rc_count, number)
#define	refcount_remove_many(rc, number, holder)   atomic_add_64_nv(&(rc)->rc_count, -number)
#define	refcount_transfer(dst, src)
#define	refcount_sysinit()
#define	refcount_fini()
Typedefs
typedef struct refcount	refcount_t

---

Define Documentation

#define FTAG   ((char *)__func__)

If the reference is held only by the calling function and not any particular object, use FTAG (which is a string) for the holder_tag.

Otherwise, use the object that holds the reference.

Definition at line 43 of file refcount.h.

#define refcount_add	(		rc,
			holder
	)		atomic_add_64_nv(&(rc)->rc_count, 1)

Definition at line 86 of file refcount.h.

#define refcount_add_many	(		rc,
			number,
			holder
	)		atomic_add_64_nv(&(rc)->rc_count, number)

Definition at line 88 of file refcount.h.

#define refcount_count

(

rc

)

((rc)->rc_count)

Definition at line 85 of file refcount.h.

#define refcount_create

(

rc

)

((rc)->rc_count = 0)

Definition at line 81 of file refcount.h.

#define refcount_destroy

(

rc

)

((rc)->rc_count = 0)

Definition at line 82 of file refcount.h.

#define refcount_destroy_many	(		rc,
			number
	)		((rc)->rc_count = 0)

Definition at line 83 of file refcount.h.

#define refcount_fini

(

)

Definition at line 99 of file refcount.h.

#define refcount_is_zero

(

rc

)

((rc)->rc_count == 0)

Definition at line 84 of file refcount.h.

#define refcount_remove	(		rc,
			holder
	)		atomic_add_64_nv(&(rc)->rc_count, -1)

Definition at line 87 of file refcount.h.

#define refcount_remove_many	(		rc,
			number,
			holder
	)		atomic_add_64_nv(&(rc)->rc_count, -number)

Definition at line 90 of file refcount.h.

#define refcount_sysinit

(

)

Definition at line 98 of file refcount.h.

#define refcount_transfer	(		dst,
			src
	)

Value:

{ \
        uint64_t __tmp = (src)->rc_count; \
        atomic_add_64(&(src)->rc_count, -__tmp); \
        atomic_add_64(&(dst)->rc_count, __tmp); \
}

Definition at line 92 of file refcount.h.

---

Typedef Documentation

typedef struct refcount refcount_t