ProtocolEvent ProtocolUDPGeneric::waitForEvent(
DataObjectRef &dObj,
Timeval *timeout,
bool writeevent)
{
QueueElement *qe = NULL;
Queue *q = getQueue();
if (!q) {
return PROT_EVENT_ERROR;
}
SocketWrapper *sock = getReadEndOfReceiveSocket();
if (NULL == sock) {
HAGGLE_ERR("%s Null receive socket\n", getName());
return PROT_EVENT_ERROR_FATAL;
}
HAGGLE_DBG("%s Waiting for queue element or timeout... %s\n",
getName(), timeout->getAsString().c_str());
QueueEvent_t qev = q->retrieve(&qe,
sock->getSOCKET(),
timeout,
writeevent);
if (QUEUE_ELEMENT == qev) {
dObj = qe->getDataObject();
delete qe;
return PROT_EVENT_TXQ_NEW_DATAOBJECT;
}
if (QUEUE_EMPTY == qev) {
return PROT_EVENT_TXQ_EMPTY;
}
if (QUEUE_WATCH_WRITE == qev) {
return PROT_EVENT_WRITEABLE;
}
if (QUEUE_WATCH_ABANDONED == qev) {
// SW: this occurs when the protocol has been shutdown via some other
// mechanism, such as interface down
HAGGLE_DBG("%s Waiting for event abandoned\n", getName());
return PROT_EVENT_SHOULD_EXIT;
}
if (QUEUE_TIMEOUT == qev) {
HAGGLE_DBG("%s Waiting for event timeout\n", getName());
return PROT_EVENT_TIMEOUT;
}
if (QUEUE_WATCH_READ == qev) {
return PROT_EVENT_INCOMING_DATA;
}
HAGGLE_ERR("%s Waiting for event unknown error\n", getName());
return PROT_EVENT_ERROR;
}
