ref: b699be1156cb41be910dadb3c8a6df0bea12bf67
dir: /libnpe_pthread/pthread_join.c/
#include "_pthread.h"
int
pthread_join(pthread_t pt, void **res)
{
npe_pthread_t *t;
t = (npe_pthread_t*)pt;
if(t->waitchan != nil)
recv(t->waitchan, res);
return 0;
}