Stoppable.hpp

/*
 * If not stated otherwise in this file or this component's Licenses.txt file the
 * following copyright and licenses apply:
 *
 * Copyright 2016 RDK Management
 *
 * 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.
*/
 
 
 
/**
* @defgroup hdmicec
* @{
* @defgroup osal
* @{
**/
 
 
#ifndef HDMI_CCEC_OSAL_STOPPABLE_HPP_
#define HDMI_CCEC_OSAL_STOPPABLE_HPP_
 
#include "OSAL.hpp"
 
CCEC_OSAL_BEGIN_NAMESPACE
 
class Stoppable {
        enum {
                RUNNING,
                STOPPING,
                STOPPED,
        };
public:
        Stoppable(int state = RUNNING) : state(state) {}
 
        virtual void  stop(bool block = false) = 0;
        virtual bool  isStopped(void) {
                return state == STOPPED;
        }
protected:
 
        virtual void runStarted(void) {
                state = RUNNING;
        }
        virtual void  stopStarted(void) {
                if (state == RUNNING) state = STOPPING;
        }
        virtual bool  isStopping(void) {
                return ((state == STOPPING) || (state == STOPPED));
        }
        virtual bool isRunning(void) {
                return state == RUNNING;
        }
        virtual void stopCompleted(void) {
                state = STOPPED;
        }
private:
        volatile int state;
 
};
 
CCEC_OSAL_END_NAMESPACE
 
#endif
 
 
/** @} */
/** @} */