Import of qpid from etp:

  URL: https://etp.108.redhat.com/svn/etp/trunk/blaze
  Repository Root: https://etp.108.redhat.com/svn/etp
  Repository UUID: 06e15bec-b515-0410-bef0-cc27a458cf48
  Revision: 608



git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/trunk/qpid@447994 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 106 insertions, 0 deletions

diff --git a/cpp/broker/inc/Queue.h b/cpp/broker/inc/Queue.h
new file mode 100644
index 0000000000..2229ba6235
--- /dev/null
+++ b/cpp/broker/inc/Queue.h
@@ -0,0 +1,106 @@
+/*
+ *
+ * Copyright (c) 2006 The Apache Software Foundation
+ *
+ * Licensed 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 _Queue_
+#define _Queue_
+
+#include <vector>
+#include <queue>
+#include "memory.h"
+#include "apr_time.h"
+#include "amqp_types.h"
+#include "Binding.h"
+#include "ConnectionToken.h"
+#include "Consumer.h"
+#include "Message.h"
+#include "MonitorImpl.h"
+
+namespace qpid {
+    namespace broker {
+
+        /**
+         * Thrown when exclusive access would be violated.
+         */
+        struct ExclusiveAccessException{};
+
+        /**
+         * The brokers representation of an amqp queue. Messages are
+         * delivered to a queue from where they can be dispatched to
+         * registered consumers or be stored until dequeued or until one
+         * or more consumers registers.
+         */
+        class Queue{
+            const string name;
+            const u_int32_t autodelete;
+            const bool durable;
+            const ConnectionToken* const owner;
+            std::vector<Consumer*> consumers;
+            std::queue<Binding*> bindings;
+            std::queue<Message::shared_ptr> messages;
+            bool queueing;
+            bool dispatching;
+            int next;
+            mutable qpid::concurrent::MonitorImpl lock;
+            apr_time_t lastUsed;
+            Consumer* exclusive;
+
+            bool startDispatching();
+            bool dispatch(Message::shared_ptr& msg);
+
+        public:
+            
+            typedef std::tr1::shared_ptr<Queue> shared_ptr;
+
+            typedef std::vector<shared_ptr> vector;
+	    
+            Queue(const string& name, bool durable = false, u_int32_t autodelete = 0, const ConnectionToken* const owner = 0);
+            ~Queue();
+            /**
+             * Informs the queue of a binding that should be cancelled on
+             * destruction of the queue.
+             */
+            void bound(Binding* b);
+            /**
+             * Delivers a message to the queue from where it will be
+             * dispatched to immediately to a consumer if one is
+             * available or stored for dequeue or later dispatch if
+             * not.
+             */
+            void deliver(Message::shared_ptr& msg);
+            /**
+             * Dispatch any queued messages providing there are
+             * consumers for them. Only one thread can be dispatching
+             * at any time, but this method (rather than the caller)
+             * is responsible for ensuring that.
+             */
+            void dispatch();
+            void consume(Consumer* c, bool exclusive = false);
+            void cancel(Consumer* c);
+            Message::shared_ptr dequeue();
+            u_int32_t purge();
+            u_int32_t getMessageCount() const;
+            u_int32_t getConsumerCount() const;
+            inline const string& getName() const { return name; }
+            inline const bool isExclusiveOwner(const ConnectionToken* const o) const { return o == owner; }
+            inline bool hasExclusiveConsumer() const { return exclusive; }
+            bool canAutoDelete() const;
+        };
+    }
+}
+
+
+#endif