atomic.h File Reference

#include <linux/compiler.h>
#include <linux/types.h>
#include <asm/cmpxchg.h>
#include <asm/atomic-irq.h>

Go to the source code of this file.

Macros
#define	ATOMIC_INIT(i)   { (i) }
#define	atomic_read(v)   (*(volatile int *)&(v)->counter)
#define	atomic_set(v, i)   ((v)->counter = (i))
#define	atomic_add_negative(a, v)   (atomic_add_return((a), (v)) < 0)
#define	atomic_dec_return(v)   atomic_sub_return(1, (v))
#define	atomic_inc_return(v)   atomic_add_return(1, (v))
#define	atomic_inc_and_test(v)   (atomic_inc_return(v) == 0)
#define	atomic_sub_and_test(i, v)   (atomic_sub_return((i), (v)) == 0)
#define	atomic_dec_and_test(v)   (atomic_sub_return(1, (v)) == 0)
#define	atomic_inc(v)   atomic_add(1, (v))
#define	atomic_dec(v)   atomic_sub(1, (v))
#define	atomic_xchg(v, new)   (xchg(&((v)->counter), new))
#define	atomic_cmpxchg(v, o, n)   (cmpxchg(&((v)->counter), (o), (n)))
#define	smp_mb__before_atomic_dec()   smp_mb()
#define	smp_mb__after_atomic_dec()   smp_mb()
#define	smp_mb__before_atomic_inc()   smp_mb()
#define	smp_mb__after_atomic_inc()   smp_mb()

Macro Definition Documentation

#define atomic_add_negative	(		a,
			v
	)		(atomic_add_return((a), (v)) < 0)

Definition at line 27 of file atomic.h.

#define atomic_cmpxchg	(		v,
			o,
			n
	)		(cmpxchg(&((v)->counter), (o), (n)))

Definition at line 38 of file atomic.h.

#define atomic_dec

(

v

)

atomic_sub(1, (v))

Definition at line 35 of file atomic.h.

#define atomic_dec_and_test

(

v

)

(atomic_sub_return(1, (v)) == 0)

Definition at line 32 of file atomic.h.

#define atomic_dec_return

(

v

)

atomic_sub_return(1, (v))

Definition at line 28 of file atomic.h.

#define atomic_inc

(

v

)

atomic_add(1, (v))

Definition at line 34 of file atomic.h.

#define atomic_inc_and_test

(

v

)

(atomic_inc_return(v) == 0)

Definition at line 30 of file atomic.h.

#define atomic_inc_return

(

v

)

atomic_add_return(1, (v))

Definition at line 29 of file atomic.h.

#define ATOMIC_INIT

(

i

)

{ (i) }

Definition at line 14 of file atomic.h.

#define atomic_read

(

v

)

(*(volatile int *)&(v)->counter)

Definition at line 16 of file atomic.h.

#define atomic_set	(		v,
			i
	)		((v)->counter = (i))

Definition at line 17 of file atomic.h.

#define atomic_sub_and_test	(		i,
			v
	)		(atomic_sub_return((i), (v)) == 0)

Definition at line 31 of file atomic.h.

#define atomic_xchg	(		v,
			new
	)		(xchg(&((v)->counter), new))

Definition at line 37 of file atomic.h.

#define smp_mb__after_atomic_dec

(

)

smp_mb()

Definition at line 66 of file atomic.h.

#define smp_mb__after_atomic_inc

(

)

smp_mb()

Definition at line 68 of file atomic.h.

#define smp_mb__before_atomic_dec

(

)

smp_mb()

Definition at line 65 of file atomic.h.

#define smp_mb__before_atomic_inc

(

)

smp_mb()

Definition at line 67 of file atomic.h.