pthread_spinlock_t
int pthread_spin_init(pthread_spinlock_t * __spin, int)
int pthread_spin_destroy(pthread_spinlock_t * __spin)
int pthread_spin_lock(pthread_spinlock_t * __spin)
int pthread_spin_trylock(pthread_spinlock_t * __spin)
int pthread_spin_unlock(pthread_spinlock_t * __spin)
_pthread_spin_lock(pthread_spinlock_t *lock)
_pthread_spin_unlock(pthread_spinlock_t *lock)
_pthread_spin_init(pthread_spinlock_t *lock, int pshared)
_pthread_spin_destroy(pthread_spinlock_t *lock)
_pthread_spin_trylock(pthread_spinlock_t *lock)