/* * Copyright (c) 2008 - 2009 * Jonathan Schleifer * * 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) # define of_atomic_add32(p, i) (*p += i) # define of_atomic_sub32(p, i) (*p -= i) # define of_atomic_or32(p, i) (*p |= i) # define of_atomic_and32(p, i) (*p &= i) # define of_atomic_xor32(p, i) (*p ^= i) static OF_INLINE BOOL of_atomic_cmpswap32(int32_t *p, int32_t o, int32_t n) { if (*p == o) { *p = n; return YES; } return NO; } #elif defined(OF_HAVE_GCC_ATOMIC_OPS) # define of_atomic_add32(p, i) __sync_add_and_fetch(p, i) # define of_atomic_sub32(p, i) __sync_sub_and_fetch(p, i) # define of_atomic_or32(p, i) __sync_or_and_fetch(p, i) # define of_atomic_and32(p, i) __sync_and_and_fetch(p, i) # define of_atomic_xor32(p, i) __sync_xor_and_fetch(p, i) # define of_atomic_cmpswap32(p, o, n) __sync_bool_compare_and_swap(p, o, n) #elif defined(OF_HAVE_LIBKERN_OSATOMIC_H) # include # define of_atomic_add32(p, i) OSAtomicAdd32Barrier(i, p) # define of_atomic_sub32(p, i) OSAtomicAdd32Barriar(-(i), p) # define of_atomic_inc32(p) OSAtomicIncrement32Barrier(p) # define of_atomic_dec32(p) OSAtomicDecrement32Barrier(p) # define of_atomic_or32(p, i) OSAtomicOr32Barrier(i, p) # define of_atomic_and32(p, i) OSAtomicAnd32Barrier(i, p) # define of_atomic_xor32(p, i) OSAtomicXor32Barrier(i, p) # define of_atomic_cmpswap32(p, o, n) OSAtomicCompareAndSwap32Barrier(o, n, p) #else # error No atomic operations available! #endif #if !defined(OF_THREADS) || defined(OF_HAVE_GCC_ATOMIC_OPS) # define of_atomic_inc32(p) of_atomic_add32(p, 1) # define of_atomic_dec32(p) of_atomic_sub32(p, 1) #endif