Artifact 396990690657cdefce8b16006677961d796f596b522bccec1dfa9d6104d82cde:
- File
src/atomic.h
— part of check-in
[b91a8283fe]
at
2010-03-05 11:52:18
on branch 0.2
— Merge a few changesets from the default branch into the 0.2 branch.
Changesets:
* b95fcaa6d694
* 804c68d222b4
* da8cd738da3d
* 1109d5ce3419
* d03f5c1ca95d
* 2a7017722165
* 4fccdc79eeb7
* d228149fbc04
* 8782d412a4a6 (user: js, size: 2842) [annotate] [blame] [check-ins using]
/* * Copyright (c) 2008 - 2010 * Jonathan Schleifer <js@webkeks.org> * * All rights reserved. * * This file is part of ObjFW. It may be distributed under the terms of the * Q Public License 1.0, which can be found in the file LICENSE included in * the packaging of this file. */ #import "OFMacros.h" #if defined(OF_THREADS) && !defined(OF_HAVE_GCC_ATOMIC_OPS) && \ !defined(OF_HAVE_LIBKERN_OSATOMIC_H) # error No atomic operations available! #endif #ifdef OF_HAVE_LIBKERN_OSATOMIC_H # include <libkern/OSAtomic.h> #endif static OF_INLINE int32_t of_atomic_add32(volatile int32_t *p, int32_t i) { #if !defined(OF_THREADS) return (*p += i); #elif defined(OF_HAVE_GCC_ATOMIC_OPS) return __sync_add_and_fetch(p, i); #elif defined(OF_HAVE_LIBKERN_OSATOMIC_H) return OSAtomicAdd32Barrier(i, p); #endif } static OF_INLINE int32_t of_atomic_sub32(volatile int32_t *p, int32_t i) { #if !defined(OF_THREADS) return (*p -= i); #elif defined(OF_HAVE_GCC_ATOMIC_OPS) return __sync_sub_and_fetch(p, i); #elif defined(OF_HAVE_LIBKERN_OSATOMIC_H) return OSAtomicAdd32Barrier(-i, p); #endif } static OF_INLINE int32_t of_atomic_inc32(volatile int32_t *p) { #if !defined(OF_THREADS) return ++*p; #elif defined(OF_HAVE_GCC_ATOMIC_OPS) return __sync_add_and_fetch(p, 1); #elif defined(OF_HAVE_LIBKERN_OSATOMIC_H) return OSAtomicIncrement32Barrier(p); #endif } static OF_INLINE int32_t of_atomic_dec32(volatile int32_t *p) { #if !defined(OF_THREADS) return --*p; #elif defined(OF_HAVE_GCC_ATOMIC_OPS) return __sync_sub_and_fetch(p, 1); #elif defined(OF_HAVE_LIBKERN_OSATOMIC_H) return OSAtomicDecrement32Barrier(p); #endif } static OF_INLINE uint32_t of_atomic_or32(volatile uint32_t *p, uint32_t i) { #if !defined(OF_THREADS) return (*p |= i); #elif defined(OF_HAVE_GCC_ATOMIC_OPS) return __sync_or_and_fetch(p, i); #elif defined(OF_HAVE_LIBKERN_OSATOMIC_H) return OSAtomicOr32Barrier(i, p); #endif } static OF_INLINE uint32_t of_atomic_and32(volatile uint32_t *p, uint32_t i) { #if !defined(OF_THREADS) return (*p &= i); #elif defined(OF_HAVE_GCC_ATOMIC_OPS) return __sync_and_and_fetch(p, i); #elif defined(OF_HAVE_LIBKERN_OSATOMIC_H) return OSAtomicAnd32Barrier(i, p); #endif } static OF_INLINE uint32_t of_atomic_xor32(volatile uint32_t *p, uint32_t i) { #if !defined(OF_THREADS) return (*p ^= i); #elif defined(OF_HAVE_GCC_ATOMIC_OPS) return __sync_xor_and_fetch(p, i); #elif defined(OF_HAVE_LIBKERN_OSATOMIC_H) return OSAtomicXor32Barrier(i, p); #endif } static OF_INLINE BOOL of_atomic_cmpswap32(volatile int32_t *p, int32_t o, int32_t n) { #if !defined(OF_THREADS) if (*p == o) { *p = n; return YES; } return NO; #elif defined(OF_HAVE_GCC_ATOMIC_OPS) return __sync_bool_compare_and_swap(p, o, n); #elif defined(OF_HAVE_LIBKERN_OSATOMIC_H) return OSAtomicCompareAndSwap32Barrier(o, n, p); #endif }