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diff --git a/nci/jni/CondVar.h b/nci/jni/CondVar.h
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+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * 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.
+ */
+
+/*
+ *  Encapsulate a condition variable for thread synchronization.
+ */
+
+#pragma once
+#include <pthread.h>
+#include "Mutex.h"
+
+
+class CondVar
+{
+public:
+    /*******************************************************************************
+    **
+    ** Function:        CondVar
+    **
+    ** Description:     Initialize member variables.
+    **
+    ** Returns:         None.
+    **
+    *******************************************************************************/
+    CondVar ();
+
+
+    /*******************************************************************************
+    **
+    ** Function:        ~CondVar
+    **
+    ** Description:     Cleanup all resources.
+    **
+    ** Returns:         None.
+    **
+    *******************************************************************************/
+    ~CondVar ();
+
+
+    /*******************************************************************************
+    **
+    ** Function:        wait
+    **
+    ** Description:     Block the caller and wait for a condition.
+    **
+    ** Returns:         None.
+    **
+    *******************************************************************************/
+    void wait (Mutex& mutex);
+
+
+    /*******************************************************************************
+    **
+    ** Function:        wait
+    **
+    ** Description:     Block the caller and wait for a condition.
+    **                  millisec: Timeout in milliseconds.
+    **
+    ** Returns:         True if wait is successful; false if timeout occurs.
+    **
+    *******************************************************************************/
+    bool wait (Mutex& mutex, long millisec);
+
+
+    /*******************************************************************************
+    **
+    ** Function:        notifyOne
+    **
+    ** Description:     Unblock the waiting thread.
+    **
+    ** Returns:         None.
+    **
+    *******************************************************************************/
+    void notifyOne ();
+
+private:
+    pthread_cond_t mCondition;
+};