man pages section 9: DDI and DKI Kernel Functions

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Updated: July 2014
 
 

atomic_and_ulong_nv(9F)

Name

atomic_and, atomic_and_8, atomic_and_uchar, atomic_and_16, atomic_and_ushort, atomic_and_32, atomic_and_uint, atomic_and_ulong, atomic_and_64, atomic_and_8_nv, atomic_and_uchar_nv, atomic_and_16_nv, atomic_and_ushort_nv, atomic_and_32_nv, atomic_and_uint_nv, atomic_and_ulong_nv, atomic_and_64_nv - atomic AND operations

Synopsis

#include <sys/atomic.h>

void atomic_and_8(volatile uint8_t *target, uint8_t bits);
void atomic_and_uchar(volatile uchar_t *target, uchar_t bits);
void atomic_and_16(volatile uint16_t *target, uint16_t bits);
void atomic_and_ushort(volatile ushort_t *target, ushort_t bits);
void atomic_and_32(volatile uint32_t *target, uint32_t bits);
void atomic_and_uint(volatile uint_t *target, uint_t bits);
void atomic_and_ulong(volatile ulong_t *target, ulong_t bits);
void atomic_and_64(volatile uint64_t *target, uint64_t bits);
uint8_t atomic_and_8_nv(volatile uint8_t *target, uint8_t bits);
uchar_t atomic_and_uchar_nv(volatile uchar_t *target, uchar_t bits);
uint16_t atomic_and_16_nv(volatile uint16_t *target, uint16_t bits);
ushort_t atomic_and_ushort_nv(volatile ushort_t *target, ushort_t bits);
uint32_t atomic_and_32_nv(volatile uint32_t *target, uint32_t bits);
uint_t atomic_and_uint_nv(volatile uint_t *target, uint_t bits);
ulong_t atomic_and_ulong_nv(volatile ulong_t *target, ulong_t bits);
uint64_t atomic_and_64_nv(volatile uint64_t *target, uint64_t bits);

Description

These functions enable the bitwise AND 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.

Context

These functions can be called from user, interrupt, or kernel context.

Attributes

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE
ATTRIBUTE VALUE
Interface Stability
Committed

See Also

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

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.