atomic.h File Reference

Go to the source code of this file.

Classes
struct	atomic_t

Macros
#define	ATOMIC_INIT(i)   �{ (i) }
#define	atomic_read(v)   ((v)->counter)
#define	atomic_set(v, i)   (((v)->counter) = (i))

Functions
static void	atomic_add (int i, atomic_t *v)
static void	atomic_sub (int i, atomic_t *v)
static int	atomic_sub_and_test (int i, atomic_t *v)
static void	atomic_inc (atomic_t *v)
static void	atomic_dec (atomic_t *v)
	decrement atomic variable �* More...
static int	atomic_dec_and_test (atomic_t *v)
	Decrement and test �*. More...
static int	atomic_inc_and_test (atomic_t *v)
	Increment and test �*. More...
static int	atomic_add_negative (int i, atomic_t *v)
	add and test if negative �* More...

Macro Definition Documentation

ATOMIC_INIT

#define ATOMIC_INIT

(

i

)

�{ (i) }

atomic_read

#define atomic_read

(

v

)

((v)->counter)

�* Read atomic variable �*

Parameters

v	pointer of type atomic_t �* �* Atomically reads the value of @v. �

atomic_set

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

�* Set atomic variable �*

Parameters

v	pointer of type atomic_t �*
i	required value �

Function Documentation

atomic_add()

static void atomic_add ( int  i, atomic_t *  v  )

inlinestatic

�* Add to the atomic variable �*

Parameters

i	integer value to add �*
v	pointer of type atomic_t �

References atomic_t::counter.

atomic_add_negative()

static int atomic_add_negative ( int  i, atomic_t *  v  )

inlinestatic

add and test if negative �*

�*

Parameters

v	pointer of type atomic_t �*
i	integer value to add �* �* Atomically adds @i to @v and returns true �* if the result is negative, or false when �* result is greater than or equal to zero. �

References atomic_t::counter.

atomic_dec()

static void atomic_dec ( atomic_t *  v )

inlinestatic

decrement atomic variable �*

�*

Parameters

v	pointer of type atomic_t �* �* Atomically decrements @v by 1. �Note that the guaranteed �* useful range of an atomic_t is only 24 bits. �

References atomic_t::counter.

atomic_dec_and_test()

static int atomic_dec_and_test ( atomic_t *  v )

inlinestatic

Decrement and test �*.

�*

Parameters

v	pointer of type atomic_t �* �* Atomically decrements @v by 1 and �* returns true if the result is 0, or false for all other �* cases. �

References atomic_t::counter.

atomic_inc()

static void atomic_inc ( atomic_t *  v )

inlinestatic

�* Increment atomic variable �*

Parameters

v	pointer of type atomic_t �* �* Atomically increments @v by 1. �

References atomic_t::counter.

atomic_inc_and_test()

static int atomic_inc_and_test ( atomic_t *  v )

inlinestatic

Increment and test �*.

�*

Parameters

v	pointer of type atomic_t �* �* Atomically increments @v by 1 �* and returns true if the result is zero, or false for all �* other cases. �

References atomic_t::counter.

atomic_sub()

static void atomic_sub ( int  i, atomic_t *  v  )

inlinestatic

�* Subtract the atomic variable �*

Parameters

i	integer value to subtract �*
v	pointer of type atomic_t �* �* Atomically subtracts @i from @v. �

References atomic_t::counter.

atomic_sub_and_test()

static int atomic_sub_and_test ( int  i, atomic_t *  v  )

inlinestatic

�* Subtract value from variable and test result �*

Parameters

i	integer value to subtract �*
v	pointer of type atomic_t �* �* Atomically subtracts @i from @v and returns �* true if the result is zero, or false for all �* other cases. �

References atomic_t::counter.