man pages section 3: Basic Library Functions

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Updated: July 2014
 
 

atomic_or_ushort_nv(3C)

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 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(5) for descriptions of the following attributes:

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

See Also

atomic_add(3C), atomic_and(3C), atomic_bits(3C), atomic_cas(3C), atomic_dec(3C), atomic_inc(3C), atomic_swap(3C), membar_ops(3C), attributes(5), atomic_ops(9F)

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.