Moved PollableCondition, PollableQueue and to sys. Fixed cluster shutdown issues.

sys/PollableCondition: is a generic mechansim to poll for non-IO
events in the Poller.

sys/PollableQueue: is a thread-safe queue template that can be
dispatched from the Poller when there are items on the queue. It uses
PollableCondition.


git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/trunk/qpid@694243 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 0 insertions, 113 deletions

diff --git a/cpp/src/qpid/cluster/PollableQueue.h b/cpp/src/qpid/cluster/PollableQueue.h
deleted file mode 100644
index 1c7720f5c6..0000000000
--- a/cpp/src/qpid/cluster/PollableQueue.h
+++ /dev/null
@@ -1,113 +0,0 @@
-#ifndef QPID_CLUSTER_POLLABLEQUEUE_H
-#define QPID_CLUSTER_POLLABLEQUEUE_H
-
-/*
- *
- * 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/cluster/PollableCondition.h"
-#include "qpid/sys/Dispatcher.h"
-#include "qpid/sys/Mutex.h"
-#include <boost/function.hpp>
-#include <boost/bind.hpp>
-#include <algorithm>
-#include <deque>
-
-namespace qpid {
-
-namespace sys { class Poller; }
-
-namespace cluster {
-
-// FIXME aconway 2008-08-11: this could be of more general interest,
-// move to common lib.
-
-/**
- * A queue that can be polled by sys::Poller.  Any thread can push to
- * the queue, on wakeup the poller thread processes all items on the
- * queue by passing them to a callback in a batch.
- */
-template <class T>
-class PollableQueue {
-    typedef std::deque<T> Queue;
-
-  public:
-    typedef typename Queue::iterator iterator;
-    
-    /** Callback to process a range of items. */
-    typedef boost::function<void (const iterator&, const iterator&)> Callback;
-
-    /** Functor tempalate to create a Callback from a functor that handles a single item. */
-    template <class F> struct ForEach {
-        F handleOne;
-        ForEach(const F& f) : handleOne(f) {}
-        void operator()(const iterator& i, const iterator& j) const { std::for_each(i, j, handleOne); }
-    };
-    /** Function to create ForEach instances */
-    template <class F> static ForEach<F> forEach(const F& f) { return ForEach<F>(f); }
-    
-    /** When the queue is selected by the poller, values are passed to callback cb. */
-    explicit PollableQueue(const Callback& cb);
-
-    /** Push a value onto the queue. Thread safe */
-    void push(const T& t) { ScopedLock l(lock); queue.push_back(t); condition.set(); }
-
-    /** Start polling. */ 
-    void start(const boost::shared_ptr<sys::Poller>& poller) { handle.startWatch(poller); }
-
-    /** Stop polling. */
-    void stop() { handle.stopWatch(); }
-    
-  private:
-    typedef sys::Mutex::ScopedLock ScopedLock;
-    typedef sys::Mutex::ScopedUnlock ScopedUnlock;
-
-    void dispatch(sys::DispatchHandle&);
-    
-    sys::Mutex lock;
-    Callback callback;
-    PollableCondition condition;
-    sys::DispatchHandle handle;
-    Queue queue;
-    Queue batch;
-};
-
-template <class T> PollableQueue<T>::PollableQueue(const Callback& cb) // FIXME aconway 2008-08-12: 
-    : callback(cb),
-      handle(condition, boost::bind(&PollableQueue<T>::dispatch, this, _1), 0, 0)
-{}
-
-template <class T> void PollableQueue<T>::dispatch(sys::DispatchHandle& h) {
-    ScopedLock l(lock);         // Lock for concurrent push() 
-    batch.clear();
-    batch.swap(queue);
-    condition.clear();
-    {
-        // Process outside the lock to allow concurrent push.
-        ScopedUnlock u(lock);
-        callback(batch.begin(), batch.end()); 
-        h.rewatch();
-    }
-    batch.clear();
-}
-
-}} // namespace qpid::cluster
-
-#endif  /*!QPID_CLUSTER_POLLABLEQUEUE_H*/