spinLock.h

/* Copyright (c) 2010-2012, Stefan Eilemann <eile@equalizergraphics.com> 
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License version 2.1 as published
 * by the Free Software Foundation.
 *  
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#ifndef LUNCHBOX_SPINLOCK_H
#define LUNCHBOX_SPINLOCK_H

#include <lunchbox/atomic.h>         // member
#include <lunchbox/nonCopyable.h>    // base class
#include <lunchbox/thread.h>         // used in inline method

namespace lunchbox
{
namespace detail { class SpinLock; }

    class SpinLock : public NonCopyable
    {
    public:
        LUNCHBOX_API SpinLock();

        LUNCHBOX_API ~SpinLock();

        LUNCHBOX_API void set();

        LUNCHBOX_API void unset();

        LUNCHBOX_API bool trySet();

        LUNCHBOX_API void setRead();

        LUNCHBOX_API void unsetRead();

        LUNCHBOX_API bool trySetRead();

        LUNCHBOX_API bool isSet();

        LUNCHBOX_API bool isSetWrite();

        LUNCHBOX_API bool isSetRead();

    private:
        detail::SpinLock* const _impl;
    };
}
#endif //LUNCHBOX_SPINLOCK_H