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, 68 insertions, 0 deletions

diff --git a/cpp/common/concurrent/inc/LockedQueue.h b/cpp/common/concurrent/inc/LockedQueue.h
new file mode 100644
index 0000000000..ef3f0b8381
--- /dev/null
+++ b/cpp/common/concurrent/inc/LockedQueue.h
@@ -0,0 +1,68 @@
+/*
+ *
+ * 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 _LockedQueue_
+#define _LockedQueue_
+
+#include <queue>
+#include "Monitor.h"
+
+/**
+ * A threadsafe queue abstraction
+ */
+namespace qpid {
+namespace concurrent {
+    template<class T, class L> class LockedQueue
+    {
+        L lock;
+        std::queue<T*> queue;
+
+    public:
+        void put(T* item);
+        T* take();
+        bool empty();
+    };
+
+    template<class T, class L> void LockedQueue<T, L>::put(T* item){
+        lock.acquire();
+        queue.push(item);
+        lock.release();
+    }
+
+    template<class T, class L> T* LockedQueue<T, L>::take(){
+        lock.acquire();        
+        T* item = 0;
+        if(!queue.empty()){
+            item = queue.front();
+            queue.pop();
+        }
+        lock.release();
+        return item;
+    }
+
+    template<class T, class L> bool LockedQueue<T, L>::empty(){
+        lock.acquire();
+        bool result = queue.empty();
+        lock.release();
+        return result;
+    }
+
+}
+}
+
+
+#endif