int
owsl_socket_is_writable
(
OWSLSocketInfo * socket
)
{
return
(
(
socket->type_info->mode == OWSL_MODE_DATAGRAM
||
socket->connected > 0
)
&&
(
socket->out_queue == NULL
||
! owqueue_is_full (socket->out_queue)
)
&&
(
socket->type_info->is_writable == NULL
||
socket->type_info->is_writable (socket)
)
) ;
}
static int
owqueue_signal_write
(
OWQueue * queue
)
{
OWQueueEvent event = 0 ;
if (pthread_mutex_lock (& queue->state_mutex))
{
return -1 ;
}
if (queue->is_empty)
{
/* was empty before this write */
queue->is_empty = 0 ;
event |= OWQUEUE_NOT_EMPTY ;
}
else if (queue->space_needed)
{
/* if write succeed and there was space needed, assume that last failed write is forgotten */
queue->space_needed = 0 ;
event |= OWQUEUE_SPACE_AVAILABLE ;
}
if (owqueue_is_full (queue))
{
if (queue->packet_mode == OWQUEUE_MULTI_PACKET)
{
queue->space_needed = queue->packet_min_size ;
}
else
{
queue->space_needed = 1 ;
}
event |= OWQUEUE_SPACE_NEEDED ;
}
if (event != 0 && queue->callback_function != NULL)
{
queue->callback_function (queue, event, (void *) queue->callback_user_data) ;
}
if (pthread_mutex_unlock (& queue->state_mutex))
{
return -1 ;
}
return 0 ;
}
