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*/
#import "objfw-defs.h"
#if !defined(OF_THREADS)
# define of_atomic_inc32(p) ++(*p)
# define of_atomic_dec32(p) --(*p)
#elif defined(OF_HAVE_GCC_ATOMIC_OPS)
# define of_atomic_inc32(p) __sync_add_and_fetch(p, 1)
# define of_atomic_dec32(p) __sync_sub_and_fetch(p, 1)
#elif defined(OF_HAVE_LIBKERN_OSATOMIC_H)
# include <libkern/OSAtomic.h>
# define of_atomic_inc32(p) OSAtomicIncrement32Barrier((int32_t*)(p))
# define of_atomic_dec32(p) OSAtomicDecrement32Barrier((int32_t*)(p))
#else
# error No atomic operations available!
#endif
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*/
#import "objfw-defs.h"
#if !defined(OF_THREADS)
# define of_atomic_inc32(p) ++(*p)
# define of_atomic_dec32(p) --(*p)
# define of_atomic_cmpswap32(p, o, n) (*p == o ? ((*p = n) ? 1 : 1) : 0)
#elif defined(OF_HAVE_GCC_ATOMIC_OPS)
# define of_atomic_inc32(p) __sync_add_and_fetch(p, 1)
# define of_atomic_dec32(p) __sync_sub_and_fetch(p, 1)
# define of_atomic_cmpswap32(p, o, n) __sync_bool_compare_and_swap(p, o, n)
#elif defined(OF_HAVE_LIBKERN_OSATOMIC_H)
# include <libkern/OSAtomic.h>
# define of_atomic_inc32(p) OSAtomicIncrement32Barrier((int32_t*)(p))
# define of_atomic_dec32(p) OSAtomicDecrement32Barrier((int32_t*)(p))
# define of_atomic_cmpswap32(p, o, n) \
OSAtomicCompareAndSwap32Barrier(o, n, (int32_t*)p)
#else
# error No atomic operations available!
#endif
typedef int32_t of_spinlock_t;
#ifdef OF_THREADS
# define of_spinlock_lock(s) while (!of_atomic_cmpswap32(&s, 0, 1));
# define of_spinlock_unlock(s) s = 0
#else
# define of_spinlock_lock(s)
# define of_spinlock_unlock(s)
#endif
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