#include "pthread_impl.h"
#include <sys/mman.h>
#include <threads.h>

int __munmap(void *, size_t);


/* We have to be careful to not modify memory at res[1], which we
 * might do on 64 bit archs, if we'd just interpret *res (an int) as
 * void*. Therefore this can't be a simple tail call to
 * __pthread_join.
 *
 * As additional bonus, C11 threads cannot be canceled, so there is no
 * need for a cancelation function pointer, here. */
int thrd_join(thrd_t t, int *res)
{
	int tmp;
	while ((tmp = t->tid)) __timedwait(&t->tid, tmp, 0, 0, 0, 0, 0);
	if (res) *res = (int)(intptr_t)t->result;
	if (t->map_base) __munmap(t->map_base, t->map_size);
	return thrd_success;
}