/*!	Notifies all interested listeners of this transaction about the \a event.
	If \a event is a closing event (ie. TRANSACTION_ENDED, and
	TRANSACTION_ABORTED), all listeners except those listening to
	TRANSACTION_WRITTEN will be removed.
*/
static void
notify_transaction_listeners(block_cache* cache, cache_transaction* transaction,
	int32_t event)
{
	bool isClosing = is_closing_event(event);
	bool isWritten = is_written_event(event);

	ListenerList::Iterator iterator = transaction->listeners.GetIterator();
	while (iterator.HasNext()) {
		cache_listener* listener = iterator.Next();

		bool remove = (isClosing && !is_written_event(listener->events))
			|| (isWritten && is_written_event(listener->events));
		if (remove)
			iterator.Remove();

		if ((listener->events & event) != 0)
			add_notification(cache, listener, event, remove);
		else if (remove)
			delete_notification(listener);
	}

	// This must work asynchronously in the kernel, but since we're not using
	// most transaction events, we can do it here.
	flush_pending_notifications(cache);
}
Beispiel #2
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/*
 * vislib::net::TcpServer::fireServerStopped
 */
void vislib::net::TcpServer::fireServerStopped(void) {
    this->lock.Lock();
    ListenerList::Iterator it = this->listeners.GetIterator();
    while (it.HasNext()) {
        it.Next()->OnServerStopped();
    }
    this->lock.Unlock();
}
Beispiel #3
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/*
 * vislib::net::CommServer::fireServerStarted
 */
void vislib::net::CommServer::fireServerStarted(void) {
    VLSTACKTRACE("CommServer::fireServerStarted", __FILE__, __LINE__);
    this->listeners.Lock();
    ListenerList::Iterator it = this->listeners.GetIterator();
    while (it.HasNext()) {
        it.Next()->OnServerStarted(*this);
    }
    this->listeners.Unlock();
}
/*!	Removes and deletes all listeners that are still monitoring this
	transaction.
*/
static void
remove_transaction_listeners(block_cache* cache, cache_transaction* transaction)
{
	ListenerList::Iterator iterator = transaction->listeners.GetIterator();
	while (iterator.HasNext()) {
		cache_listener* listener = iterator.Next();
		iterator.Remove();

		delete_notification(listener);
	}
}
Beispiel #5
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/*
 * vislib::net::TcpServer::fireNewConnection
 */
bool vislib::net::TcpServer::fireNewConnection(Socket& socket, 
         const IPEndPoint& addr) {
    bool retval = false;

    this->lock.Lock();
    ListenerList::Iterator it = this->listeners.GetIterator();
    while (it.HasNext()) {
        if ((retval = it.Next()->OnNewConnection(socket, addr))) {
            break;
        }
    }

    this->lock.Unlock();
    return retval;
}
Beispiel #6
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/*
 * vislib::net::CommServer::fireServerError
 */
bool vislib::net::CommServer::fireServerError(
        const vislib::Exception& exception) {
    VLSTACKTRACE("CommServer::fireServerError", __FILE__, __LINE__);
    bool retval = true;

    this->listeners.Lock();
    ListenerList::Iterator it = this->listeners.GetIterator();
    while (it.HasNext()) {
        retval = it.Next()->OnServerError(*this, exception) && retval;
    }
    this->listeners.Unlock();

    VLTRACE(Trace::LEVEL_VL_ANNOYINGLY_VERBOSE, "CommServer "
        "received exit request from registered error listener: %s\n", 
        !retval ? "yes" : "no");
    return retval;
}
Beispiel #7
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/*
 * vislib::net::CommServer::fireNewConnection
 */
bool vislib::net::CommServer::fireNewConnection(
        SmartRef<AbstractCommClientChannel>& channel) {
    VLSTACKTRACE("CommServer::fireNewConnection", __FILE__, __LINE__);
    bool retval = false;

    this->listeners.Lock();
    ListenerList::Iterator it = this->listeners.GetIterator();
    while (it.HasNext()) {
        if (it.Next()->OnNewConnection(*this, channel)) {
            retval = true;
            break;
        }
    }
    this->listeners.Unlock();

    VLTRACE(Trace::LEVEL_VL_ANNOYINGLY_VERBOSE, "CommServer informed "
        "listeners about new connection. Was accepted: %s\n", 
        retval ? "yes" : "no");
    return retval;
}
static fssh_status_t
add_transaction_listener(block_cache* cache, cache_transaction* transaction,
	int32_t events, fssh_transaction_notification_hook hookFunction, void* data)
{
	ListenerList::Iterator iterator = transaction->listeners.GetIterator();
	while (iterator.HasNext()) {
		cache_listener* listener = iterator.Next();

		if (listener->data == data && listener->hook == hookFunction) {
			// this listener already exists, just update it
			listener->events |= events;
			return FSSH_B_OK;
		}
	}

	cache_listener* listener = new(std::nothrow) cache_listener;
	if (listener == NULL)
		return FSSH_B_NO_MEMORY;

	set_notification(transaction, *listener, events, hookFunction, data);
	transaction->listeners.Add(listener);
	return FSSH_B_OK;
}