#include "pthread_impl.h"
#include <threads.h>
-int __pthread_join(pthread_t, void **);
-
static int __pthread_detach(pthread_t t)
{
- /* Cannot detach a thread that's already exiting */
- if (a_cas(t->exitlock, 0, INT_MIN + 1))
+ /* If the cas fails, detach state is either already-detached
+ * or exiting/exited, and pthread_join will trap or cleanup. */
+ if (a_cas(&t->detach_state, DT_JOINABLE, DT_DETACHED) != DT_JOINABLE)
return __pthread_join(t, 0);
- t->detached = 2;
- __unlock(t->exitlock);
return 0;
}