condition_variable.hpp

/****************************************************************************
 *
 *  Copyright (c) 2017, Michael Becker (michael.f.becker@gmail.com)
 *
 *  This file is part of the FreeRTOS Add-ons project.
 *
 *  Source Code:
 *  https://github.com/michaelbecker/freertos-addons
 *
 *  Project Page:
 *  http://michaelbecker.github.io/freertos-addons/
 *
 *  On-line Documentation:
 *  http://michaelbecker.github.io/freertos-addons/docs/html/index.html
 *
 *  Permission is hereby granted, free of charge, to any person obtaining a
 *  copy of this software and associated documentation files
 *  (the "Software"), to deal in the Software without restriction, including
 *  without limitation the rights to use, copy, modify, merge, publish,
 *  distribute, sublicense, and/or sell copies of the Software, and to
 *  permit persons to whom the Software is furnished to do so,subject to the
 *  following conditions:
 *
 *  + The above copyright notice and this permission notice shall be included
 *    in all copies or substantial portions of the Software.
 *  + Credit is appreciated, but not required, if you find this project
 *    useful enough to include in your application, product, device, etc.
 *
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 ***************************************************************************/
 
 
#include "freertos-config.h"
 
#ifndef CONDITION_VARIABLE_HPP_
#define CONDITION_VARIABLE_HPP_
 
#include <list>
#include "mutex.hpp"
 
 
#ifdef CPP_FREERTOS_CONDITION_VARIABLES
 
 
namespace cpp_freertos {
 
//
//  Forward declaration. We need to prevent a circular dependency
//  between the Thread class and the ConditionVariable class.
//
class Thread;
 
 
class ConditionVariable {
 
    //
    //  Public API
    //
    public:
    
        ConditionVariable();
 
        void Signal();
 
        void Broadcast();
 
 
    //
    //  Private API
    //  The internals of this wrapper class.
    //
    private:
 
        MutexStandard Lock;
 
        std::list<Thread *> WaitList;
 
        void AddToWaitList(Thread *thread);
 
    friend class Thread;
};
 
 
}
 
#endif
 
#endif