1#include "pthread_impl.h"
 2
 3int pthread_setspecific(pthread_key_t k, const void *x)
 4{
 5	struct pthread *self = __pthread_self();
 6	/* Avoid unnecessary COW */
 7	if (self->tsd[k] != x) {
 8		self->tsd[k] = (void *)x;
 9		self->tsd_used = 1;
10	}
11	return 0;
12}