pthread_spin_lock.c « thread « src - grovel - Unnamed repository; edit this file 'description' to name the repository.

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#include "pthread_impl.h"
#include <errno.h>

int pthread_spin_lock(pthread_spinlock_t *s)
{
	while (*(volatile int *)s || a_cas(s, 0, EBUSY)) a_spin();
	return 0;
}