NAME

atomic_or, atomic_or_8, atomic_or_uchar, atomic_or_16, atomic_or_ushort, atomic_or_32, atomic_or_uint, atomic_or_ulong, atomic_or_64, atomic_or_8_nv, atomic_or_uchar_nv, atomic_or_16_nv, atomic_or_ushort_nv, atomic_or_32_nv, atomic_or_uint_nv, atomic_or_ulong_nv, atomic_or_64_nv - atomic OR operations

SYNOPSIS

#include <atomic.h>
void atomic_or_8(volatile uint8_t *target, uint8_t bits);

void atomic_or_uchar(volatile uchar_t *target, uchar_t bits);

void atomic_or_16(volatile uint16_t *target, uint16_t bits);

void atomic_or_ushort(volatile ushort_t *target, ushort_t bits);

void atomic_or_32(volatile uint32_t *target, uint32_t bits);

void atomic_or_uint(volatile uint_t *target, uint_t bits);

void atomic_or_ulong(volatile ulong_t *target, ulong_t bits);

void atomic_or_64(volatile uint64_t *target, uint64_t bits);

uint8_t atomic_or_8_nv(volatile uint8_t *target, uint8_t bits);

uchar_t atomic_or_uchar_nv(volatile uchar_t *target, uchar_t bits);

uint16_t atomic_or_16_nv(volatile uint16_t *target, uint16_t bits);

ushort_t atomic_or_ushort_nv(volatile ushort_t *target, ushort_t bits);

uint32_t atomic_or_32_nv(volatile uint32_t *target, uint32_t bits);

uint_t atomic_or_uint_nv(volatile uint_t *target, uint_t bits);

ulong_t atomic_or_ulong_nv(volatile ulong_t *target, ulong_t bits);

uint64_t atomic_or_64_nv(volatile uint64_t *target, uint64_t bits);

DESCRIPTION

These functions enable the bitwise OR of bits to the value stored in target to occur in an atomic manner.

RETURN VALUES

The *_nv() variants of these functions return the new value of target.

ERRORS

No errors are defined.

ATTRIBUTES

See attributes(7) for descriptions of the following attributes:

ATTRIBUTE TYPE	ATTRIBUTE VALUE
Interface Stability	Stable
MT-Level	MT-Safe

NOTES

The *_nv() variants are substantially more expensive on some platforms than the versions that do not return values. Do not use them unless you need to know the new value atomically.