static void *
wakeupthread(void *arg)
{
printf("thread %p\n", arg);
pthread_mutex_lock(&mtx);
predicate = 1;
printf("rise and shine %p!\n", arg);
pthread_cond_signal(&cv);
pthread_mutex_unlock(&mtx);
threxit(arg);
return NULL;
}
static void *
waitthread(void *arg)
{
printf("thread %p\n", arg);
pthread_mutex_lock(&mtx);
while (!predicate) {
printf("no good, need to wait %p\n", arg);
pthread_cond_wait(&cv, &mtx);
}
pthread_mutex_unlock(&mtx);
printf("condvar complete %p!\n", arg);
threxit(arg);
return NULL;
}
static void *
mythread(void *arg)
{
printf("thread %p\n", arg);
pthread_mutex_lock(&mtx);
printf("got lock %p\n", arg);
sched_yield();
pthread_mutex_unlock(&mtx);
printf("unlocked lock %p\n", arg);
sched_yield();
threxit(arg);
return NULL;
}
void
pthread_exit(void *retval)
{
struct rthread_cleanup_fn *clfn;
pid_t tid;
struct stack *stack;
pthread_t thread = pthread_self();
thread->retval = retval;
for (clfn = thread->cleanup_fns; clfn; ) {
struct rthread_cleanup_fn *oclfn = clfn;
clfn = clfn->next;
oclfn->fn(oclfn->arg);
free(oclfn);
}
_rthread_tls_destructors(thread);
_spinlock(&_thread_lock);
LIST_REMOVE(thread, threads);
_spinunlock(&_thread_lock);
_sem_post(&thread->donesem);
stack = thread->stack;
tid = thread->tid;
if (thread->flags & THREAD_DETACHED)
_rthread_free(thread);
else
_rthread_setflag(thread, THREAD_DONE);
if (tid != _initial_thread.tid)
_rthread_add_to_reaper(tid, stack);
_rthread_reaper();
threxit(0);
for(;;);
}
