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/*
* Copyright (C) Igor Sysoev
* Copyright (C) NGINX, Inc.
*/
#ifndef _NXT_UNIX_SPINLOCK_H_INCLUDED_
#define _NXT_UNIX_SPINLOCK_H_INCLUDED_
#if (NXT_THREADS)
#if (NXT_HAVE_MACOSX_SPINLOCK)
#include <libkern/OSAtomic.h>
typedef OSSpinLock nxt_thread_spinlock_t;
#define \
nxt_thread_spin_init(ncpu, count)
#else
typedef nxt_atomic_t nxt_thread_spinlock_t;
NXT_EXPORT void nxt_thread_spin_init(nxt_uint_t ncpu, nxt_uint_t count);
#endif
NXT_EXPORT void nxt_thread_spin_lock(nxt_thread_spinlock_t *lock);
NXT_EXPORT nxt_bool_t nxt_thread_spin_trylock(nxt_thread_spinlock_t *lock);
NXT_EXPORT void nxt_thread_spin_unlock(nxt_thread_spinlock_t *lock);
#else /* !(NXT_THREADS) */
typedef nxt_atomic_t nxt_thread_spinlock_t;
#define \
nxt_thread_spin_init(ncpu, count)
#define \
nxt_thread_spin_lock(lock)
#define \
nxt_thread_spin_trylock(lock) \
1
#define \
nxt_thread_spin_unlock(lock)
#endif
#endif /* _NXT_UNIX_SPINLOCK_H_INCLUDED_ */
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