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/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
#include "qpid/broker/QueueListeners.h"
#include <boost/bind.hpp>
namespace qpid {
namespace broker {
void QueueListeners::addListener(Consumer::shared_ptr c)
{
if (!c->inListeners) {
if (c->acquires) {
add(consumers, c);
} else {
add(browsers, c);
}
c->inListeners = true;
}
}
void QueueListeners::removeListener(Consumer::shared_ptr c)
{
if (c->inListeners) {
if (c->acquires) {
remove(consumers, c);
} else {
remove(browsers, c);
}
c->inListeners = false;
}
}
void QueueListeners::populate(NotificationSet& set)
{
if (consumers.size()) {
set.consumer = consumers.front();
consumers.pop_front();
set.consumer->inListeners = false;
} else {
// Don't swap the deques, hang on to the memory allocated.
set.browsers = browsers;
browsers.clear();
for (Listeners::iterator i = set.browsers.begin(); i != set.browsers.end(); i++)
(*i)->inListeners = false;
}
}
void QueueListeners::add(Listeners& listeners, Consumer::shared_ptr c)
{
listeners.push_back(c);
}
void QueueListeners::remove(Listeners& listeners, Consumer::shared_ptr c)
{
Listeners::iterator i = std::find(listeners.begin(), listeners.end(), c);
if (i != listeners.end()) listeners.erase(i);
}
void QueueListeners::NotificationSet::notify()
{
if (consumer) consumer->notify();
else std::for_each(browsers.begin(), browsers.end(), boost::mem_fn(&Consumer::notify));
}
bool QueueListeners::contains(Consumer::shared_ptr c) const {
return c->inListeners;
}
void QueueListeners::ListenerSet::notifyAll()
{
std::for_each(listeners.begin(), listeners.end(), boost::mem_fn(&Consumer::notify));
}
void QueueListeners::snapshot(ListenerSet& set)
{
set.listeners.insert(set.listeners.end(), consumers.begin(), consumers.end());
set.listeners.insert(set.listeners.end(), browsers.begin(), browsers.end());
}
}} // namespace qpid::broker
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