void vcos_thread_join(VCOS_THREAD_T *thread,
void **pData)
{
pthread_join(thread->thread, pData);
vcos_semaphore_delete(&thread->suspend);
/* Delete the task timer, if present */
_vcos_task_timer_cancel();
if (thread->task_timer.pfn)
{
vcos_timer_delete(&thread->task_timer);
thread->task_timer.pfn = NULL;
}
}
extern VCOS_STATUS_T vcos_generic_event_flags_get(VCOS_EVENT_FLAGS_T *flags,
VCOS_UNSIGNED bitmask,
VCOS_OPTION op,
VCOS_UNSIGNED suspend,
VCOS_UNSIGNED *retrieved_bits)
{
VCOS_EVENT_WAITER_T waitreq;
VCOS_STATUS_T rc = VCOS_EAGAIN;
int satisfied = 0;
vcos_assert(flags);
/* default retrieved bits to 0 */
*retrieved_bits = 0;
vcos_mutex_lock(&flags->lock);
switch (op & VCOS_EVENT_FLAG_OP_MASK)
{
case VCOS_AND:
if ((flags->events & bitmask) == bitmask)
{
*retrieved_bits = flags->events;
rc = VCOS_SUCCESS;
satisfied = 1;
if (op & VCOS_CONSUME)
flags->events &= ~bitmask;
}
break;
case VCOS_OR:
if (flags->events & bitmask)
{
*retrieved_bits = flags->events;
rc = VCOS_SUCCESS;
satisfied = 1;
if (op & VCOS_CONSUME)
flags->events &= ~bitmask;
}
break;
default:
vcos_assert(0);
rc = VCOS_EINVAL;
break;
}
if (!satisfied && suspend)
{
/* Have to go to sleep.
*
* Append to tail so we get FIFO ordering.
*/
waitreq.requested_events = bitmask;
waitreq.op = op;
waitreq.return_status = VCOS_EAGAIN;
waitreq.flags = flags;
waitreq.actual_events = 0;
waitreq.thread = vcos_thread_current();
waitreq.next = 0;
vcos_assert(waitreq.thread != (VCOS_THREAD_T*)-1);
VCOS_QUEUE_APPEND_TAIL(&flags->waiters, &waitreq);
if (suspend != (VCOS_UNSIGNED)-1)
_vcos_task_timer_set(event_flags_timer_expired, &waitreq, suspend);
vcos_mutex_unlock(&flags->lock);
/* go to sleep and wait to be signalled or timeout */
_vcos_thread_sem_wait();
*retrieved_bits = waitreq.actual_events;
rc = waitreq.return_status;
/* cancel the timer - do not do this while holding the mutex as it
* might be waiting for the timeout function to complete, which will
* try to take the mutex.
*/
if (suspend != (VCOS_UNSIGNED)-1)
_vcos_task_timer_cancel();
}
else
{
vcos_mutex_unlock(&flags->lock);
}
return rc;
}
