thread.hpp

Go to the documentation of this file.

#ifndef GSGL_PLATFORM_THREAD_H
#define GSGL_PLATFORM_THREAD_H

//
// $Id: thread.hpp 2 2008-03-01 20:58:50Z kulibali $
//
// Copyright (c) 2008, The Periapsis Project. All rights reserved. 
// 
// Redistribution and use in source and binary forms, with or without 
// modification, are permitted provided that the following conditions are 
// met: 
// 
// * Redistributions of source code must retain the above copyright notice, 
//   this list of conditions and the following disclaimer. 
// 
// * Redistributions in binary form must reproduce the above copyright 
//   notice, this list of conditions and the following disclaimer in the 
//   documentation and/or other materials provided with the distribution. 
// 
// * Neither the name of the The Periapsis Project nor the names of its 
//   contributors may be used to endorse or promote products derived from 
//   this software without specific prior written permission. 
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 
// IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 
// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 
// PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER 
// OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//

#include "platform/platform.hpp"

struct SDL_mutex;
struct SDL_Thread;

namespace gsgl
{

    namespace platform
    {

        class PLATFORM_API mutex
        {
            SDL_mutex *m;

        public:
            mutex();
            ~mutex();

            void lock();
            void unlock();
        }; // class mutex


        template <typename T>
        class synchronized
        {
            mutex m;
            T obj;
        public:
            synchronized() {}
            synchronized(const T & t) : obj(t) {}

            synchronized & operator= (const T & t)
            {
                m.lock();
                obj = t;
                m.unlock();

                return *this;
            }

            operator T ()
            {
                T temp;
                m.lock();
                temp = obj;
                m.unlock();
                return temp;
            }
        }; // class sychronized


        class PLATFORM_API thread
        {
            SDL_Thread *t;

        public:
            thread();
            virtual ~thread();

            bool is_running();

            void start();
            void wait();
            void kill();

        protected:
            virtual int run() = 0;

            friend int run_thread(void *);
        }; // class thread


    } // namespace platform

} // namespace gsgl

#endif

---