Some restructuring of the client code:

 * Introduced three separate 'handlers' for the connection, channel and execution 'layers'.
 * Support for asynchronous retrieval of response or completion status.
 * Channel methods no longer included in execution layers command id count.



git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/trunk/qpid@562212 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 87 insertions, 0 deletions

diff --git a/cpp/src/qpid/client/BlockingQueue.h b/cpp/src/qpid/client/BlockingQueue.h
new file mode 100644
index 0000000000..7081b76b68
--- /dev/null
+++ b/cpp/src/qpid/client/BlockingQueue.h
@@ -0,0 +1,87 @@
+/*
+ *
+ * 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.
+ *
+ */
+
+#ifndef _BlockingQueue_
+#define _BlockingQueue_
+
+#include <queue>
+#include "qpid/sys/Monitor.h"
+
+namespace qpid {
+namespace client {
+
+struct QueueClosed {};
+
+template <class T>
+class BlockingQueue 
+{
+    sys::Monitor lock;
+    std::queue<T> queue;
+    bool closed;
+ 
+public:
+
+    BlockingQueue() : closed(false) {}
+
+    void reset() 
+    {
+        sys::Monitor::ScopedLock l(lock);
+        closed = true; 
+    }
+
+    T pop()
+    {
+        sys::Monitor::ScopedLock l(lock);
+        while (!closed && queue.empty()) {
+            lock.wait();
+        } 
+        if (closed) {
+            throw QueueClosed();
+        } else {
+            T t = queue.front();
+            queue.pop();
+            return t;
+        }
+    }
+
+    void push(T t)
+    {
+        sys::Monitor::ScopedLock l(lock);
+        bool wasEmpty = queue.empty();
+        queue.push(t);
+        if (wasEmpty) {
+            lock.notifyAll();
+        }
+    }
+
+    void close()
+    {
+        sys::Monitor::ScopedLock l(lock);
+        closed = true;
+        lock.notifyAll();
+    }
+};
+
+}}
+
+
+
+#endif