upload android base code part6

android/system/nfc/halimpl/bcm2079x/adaptation/CondVar.h

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+/******************************************************************************
+ *
+ *  Copyright (C) 2012 Broadcom Corporation
+ *
+ *  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;
+};