atomic.h File Reference

#include <stdbool.h>
#include <zephyr/toolchain.h>
#include <stddef.h>
#include <zephyr/sys/atomic_types.h>
#include <zephyr/types.h>
#include <zephyr/sys/util.h>
#include <zephyr/sys/atomic_builtin.h>

Go to the source code of this file.

Macros
#define	ATOMIC_INIT(i)   (i)
	Initialize an atomic variable.
#define	ATOMIC_PTR_INIT(p)   (p)
	Initialize an atomic pointer variable.
#define	ATOMIC_BITMAP_SIZE(num_bits)   (ROUND_UP(num_bits, ATOMIC_BITS) / ATOMIC_BITS)
	This macro computes the number of atomic variables necessary to represent a bitmap with num_bits.
#define	ATOMIC_DEFINE(name, num_bits)    atomic_t name[ATOMIC_BITMAP_SIZE(num_bits)]
	Define an array of atomic variables.

Functions
static bool	atomic_test_bit (const atomic_t *target, int bit)
	Atomically test a bit.
static bool	atomic_test_and_clear_bit (atomic_t *target, int bit)
	Atomically test and clear a bit.
static bool	atomic_test_and_set_bit (atomic_t *target, int bit)
	Atomically set a bit.
static void	atomic_clear_bit (atomic_t *target, int bit)
	Atomically clear a bit.
static void	atomic_set_bit (atomic_t *target, int bit)
	Atomically set a bit.
static void	atomic_set_bit_to (atomic_t *target, int bit, bool val)
	Atomically set a bit to a given value.
bool	atomic_cas (atomic_t *target, atomic_val_t old_value, atomic_val_t new_value)
	Atomic compare-and-set.
bool	atomic_ptr_cas (atomic_ptr_t *target, atomic_ptr_val_t old_value, atomic_ptr_val_t new_value)
	Atomic compare-and-set with pointer values.
atomic_val_t	atomic_add (atomic_t *target, atomic_val_t value)
	Atomic addition.
atomic_val_t	atomic_sub (atomic_t *target, atomic_val_t value)
	Atomic subtraction.
atomic_val_t	atomic_inc (atomic_t *target)
	Atomic increment.
atomic_val_t	atomic_dec (atomic_t *target)
	Atomic decrement.
atomic_val_t	atomic_get (const atomic_t *target)
	Atomic get.
atomic_ptr_val_t	atomic_ptr_get (const atomic_ptr_t *target)
	Atomic get a pointer value.
atomic_val_t	atomic_set (atomic_t *target, atomic_val_t value)
	Atomic get-and-set.
atomic_ptr_val_t	atomic_ptr_set (atomic_ptr_t *target, atomic_ptr_val_t value)
	Atomic get-and-set for pointer values.
atomic_val_t	atomic_clear (atomic_t *target)
	Atomic clear.
atomic_ptr_val_t	atomic_ptr_clear (atomic_ptr_t *target)
	Atomic clear of a pointer value.
atomic_val_t	atomic_or (atomic_t *target, atomic_val_t value)
	Atomic bitwise inclusive OR.
atomic_val_t	atomic_xor (atomic_t *target, atomic_val_t value)
	Atomic bitwise exclusive OR (XOR).
atomic_val_t	atomic_and (atomic_t *target, atomic_val_t value)
	Atomic bitwise AND.
atomic_val_t	atomic_nand (atomic_t *target, atomic_val_t value)
	Atomic bitwise NAND.