atomic.h File Reference

Atomic operations that C can't guarantee us. More...

Go to the source code of this file.

Data Structures
struct	atomic_t

Macros
#define	ATOMIC_INIT(i)   { (i) }
#define	atomic_read(v)   ((v)->counter)
	atomic_read - read atomic variable More...
#define	atomic_set(v, i)   (((v)->counter) = (i))
	atomic_set - set atomic variable More...

Functions
static __always_inline void	atomic_inc (atomic_t *v)
	atomic_inc - increment atomic variable More...
static __always_inline void	atomic_dec (atomic_t *v)
	atomic_dec - decrement atomic variable More...

Detailed Description

Atomic operations that C can't guarantee us.

Useful for resource counting etc..

Definition in file atomic.h.

Macro Definition Documentation

ATOMIC_INIT

#define ATOMIC_INIT

(

i

)

{ (i) }

Definition at line 13 of file atomic.h.

atomic_read

#define atomic_read

(

v

)

((v)->counter)

atomic_read - read atomic variable

Parameters

v	pointer of type atomic_t

Atomically reads the value of v. Note that the guaranteed useful range of an atomic_t is only 24 bits.

Definition at line 28 of file atomic.h.

atomic_set

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

atomic_set - set atomic variable

Parameters

v	pointer of type atomic_t
i	required value

Atomically sets the value of v to i. Note that the guaranteed useful range of an atomic_t is only 24 bits.

Definition at line 38 of file atomic.h.

Function Documentation

atomic_dec()

static __always_inline void atomic_dec ( atomic_t *  v )

static

atomic_dec - 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.

Definition at line 62 of file atomic.h.

References atomic_t::counter.

atomic_inc()

static __always_inline void atomic_inc ( atomic_t *  v )

static

atomic_inc - increment atomic variable

Parameters

v	pointer of type atomic_t

Atomically increments v by 1. Note that the guaranteed useful range of an atomic_t is only 24 bits.

Definition at line 47 of file atomic.h.

References atomic_t::counter.