static const sigset_t *
thr_remove_thr_signals(const sigset_t *set, sigset_t *newset)
{
*newset = *set;
remove_thr_signals(newset);
return (newset);
}
/*
Returns
-1 if failed
0 if ok
>0 if threads where left on KILLING state because of page fault (i.e swap read pending)
*/
int thr_destroy_thread(UINT16 thread_id)
{
struct pm_thread * thr = thr_get(thread_id);
int ret = 0;
/*
NOTE: Don't think about resting VMM info on this function.
It will be used if we already have a pending read/write of a page
for this thread, and thread must stay KILLED.
*/
if(thr == NULL)
{
return -1;
}
else
{
if(thr->state != THR_KILLED && destroy_thread(thread_id) != SUCCESS)
{
return -1;
}
else
{
struct pm_task *task = tsk_get(thr->task_id);
if(task == NULL) return -1;
if(thr->state != THR_KILLED)
{
task->num_threads--;
/* Fix Task List */
if(task->first_thread == thr)
{
task->first_thread = thr->next_thread;
}
else
{
// add a prev thread !!! this is awful
struct pm_thread *currTrhead = task->first_thread;
while(currTrhead != NULL && currTrhead->next_thread != thr)
{
currTrhead = currTrhead->next_thread;
}
currTrhead->next_thread = thr->next_thread;
}
}
// remove the thread signals
remove_thr_signals(thr);
if(thr->state != THR_KILLED && (thr->flags & (THR_FLAG_PAGEFAULT | THR_FLAG_PAGEFAULT_TBL)))
{
/* Thread is waiting for a page fault (either swap or PF) */
thr->state = THR_KILLED;
ret = 1;
}
else
{
thread_info[thr->id] = NULL;
kfree(thr);
thr = NULL;
}
if(thr != NULL)
{
if(thr->state == THR_KILLED)
task->killed_threads--;
if(thr->interrupt != 0)
int_dettach(thr);
/* Remove thread from scheduler */
sch_remove(thr);
}
return ret;
}
}
}