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Copyright (c) 2006, Sun Microsystems, Inc. All Rights Reserved.
The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License.
You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License.
When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
Copyright (c) 2006, Sun Microsystems, Inc. All Rights Reserved.
The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License.
You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License.
When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
ATOMIC_OR 9F "Jan 16, 2006"
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 <sys/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.
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_and(9F), atomic_bits(9F), atomic_cas(9F), atomic_dec(9F), atomic_inc(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.