src/thread/pthread_spin_lock.c

   1 #include "pthread_impl.h"
   2 #include <errno.h>
   3
   4 int pthread_spin_lock(pthread_spinlock_t *s)
   5 {
   6         while (*(volatile int *)s || a_cas(s, 0, EBUSY)) a_spin();
   7         return 0;
   8 }