static void pthread_exited(pid_t pid)
{
pthread_descr th;
int detached;
/* Find thread with that pid */
for (th = __pthread_main_thread->p_nextlive;
th != __pthread_main_thread;
th = th->p_nextlive) {
if (th->p_pid == pid) {
/* Remove thread from list of active threads */
th->p_nextlive->p_prevlive = th->p_prevlive;
th->p_prevlive->p_nextlive = th->p_nextlive;
/* Mark thread as exited, and if detached, free its resources */
acquire(th->p_spinlock);
th->p_exited = 1;
detached = th->p_detached;
release(th->p_spinlock);
if (detached) pthread_free(th);
break;
}
}
/* If all threads have exited and the main thread is pending on a
pthread_exit, wake up the main thread and terminate ourselves. */
if (main_thread_exiting &&
__pthread_main_thread->p_nextlive == __pthread_main_thread) {
restart(__pthread_main_thread);
_exit(0);
}
}
static void pthread_handle_free(pthread_descr th)
{
acquire(th->p_spinlock);
if (th->p_exited) {
release(th->p_spinlock);
pthread_free(th);
} else {
/* The Unix process of the thread is still running.
Mark the thread as detached so that the thread manager will
deallocate its resources when the Unix process exits. */
th->p_detached = 1;
release(th->p_spinlock);
}
}
static void pthread_exited(pid_t pid)
{
pthread_descr th;
int detached;
/* Find thread with that pid */
for (th = __pthread_main_thread->p_nextlive;
th != __pthread_main_thread;
th = th->p_nextlive) {
if (th->p_pid == pid) {
/* Remove thread from list of active threads */
th->p_nextlive->p_prevlive = th->p_prevlive;
th->p_prevlive->p_nextlive = th->p_nextlive;
/* Mark thread as exited, and if detached, free its resources */
__pthread_lock(th->p_lock, NULL);
th->p_exited = 1;
/* If we have to signal this event do it now. */
if (th->p_report_events)
{
/* See whether TD_REAP is in any of the mask. */
int idx = __td_eventword (TD_REAP);
uint32_t mask = __td_eventmask (TD_REAP);
if ((mask & (__pthread_threads_events.event_bits[idx]
| th->p_eventbuf.eventmask.event_bits[idx])) != 0)
{
/* Yep, we have to signal the reapage. */
th->p_eventbuf.eventnum = TD_REAP;
th->p_eventbuf.eventdata = th;
__pthread_last_event = th;
/* Now call the function to signal the event. */
__linuxthreads_reap_event();
}
}
detached = th->p_detached;
__pthread_unlock(th->p_lock);
if (detached)
pthread_free(th);
break;
}
}
/* If all threads have exited and the main thread is pending on a
pthread_exit, wake up the main thread and terminate ourselves. */
if (main_thread_exiting &&
__pthread_main_thread->p_nextlive == __pthread_main_thread) {
restart(__pthread_main_thread);
/* Same logic as REQ_MAIN_THREAD_EXIT. */
}
}
static void pthread_handle_free(pthread_t th_id)
{
pthread_handle handle = thread_handle(th_id);
pthread_descr th;
__pthread_lock(&handle->h_lock, NULL);
if (invalid_handle(handle, th_id)) {
/* pthread_reap_children has deallocated the thread already,
nothing needs to be done */
__pthread_unlock(&handle->h_lock);
return;
}
th = handle->h_descr;
if (th->p_exited) {
__pthread_unlock(&handle->h_lock);
pthread_free(th);
} else {
/* The Unix process of the thread is still running.
Mark the thread as detached so that the thread manager will
deallocate its resources when the Unix process exits. */
th->p_detached = 1;
__pthread_unlock(&handle->h_lock);
}
}
