gboolean asyncpriorityqueue_isEmpty(AsyncPriorityQueue *q) {
g_assert(q);
g_mutex_lock(&(q->lock));
gboolean returnVal = priorityqueue_isEmpty(q->pq);
g_mutex_unlock(&(q->lock));
return returnVal;
}
/* first-in-first-out queuing discipline ($ man tc)*/
static Packet* _networkinterface_selectFirstInFirstOut(NetworkInterface* interface, gint* socketHandle) {
/* use packet priority field to select based on application ordering.
* this is really a simplification of prioritizing on timestamps. */
Packet* packet = NULL;
while(!packet && !priorityqueue_isEmpty(interface->fifoQueue)) {
/* do fifo to get the next packet from the next socket */
Socket* socket = priorityqueue_pop(interface->fifoQueue);
packet = socket_pullOutPacket(socket);
*socketHandle = *descriptor_getHandleReference((Descriptor*)socket);
if(socket_peekNextPacket(socket)) {
/* socket has more packets, and is still reffed from before */
priorityqueue_push(interface->fifoQueue, socket);
} else {
/* socket has no more packets, unref it from the sendable queue */
descriptor_unref((Descriptor*) socket);
}
}
return packet;
}