inspiration/ETL/ETL/_mutex_null.h

/*! ========================================================================
** Extended Template and Library
** NULL Mutex Abstraction Class Implementation
**
** Copyright (c) 2002 Robert B. Quattlebaum Jr.
**
** This package is free software; you can redistribute it and/or
** modify it under the terms of the GNU General Public License as
** published by the Free Software Foundation; either version 2 of
** the License, or (at your option) any later version.
**
** This package 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
** General Public License for more details.
**
** === N O T E S ===========================================================
**
** This is an internal header file, included by other ETL headers.
** You should not attempt to use it directly.
**
** ========================================================================= */

#ifndef __ETL__MUTEX_NULL_H_
#define __ETL__MUTEX_NULL_H_

_ETL_BEGIN_NAMESPACE

class mutex_null
{
public:

    mutex_null() {}
    ~mutex_null() {}
    // Exception-safe mutex lock class

    class lock
    {
    public:
        lock(mutex_null &/*x*/) { }
    };

    void lock_mutex() {}
    bool try_lock_mutex()
    {
        return true;
    }
    void unlock_mutex() {}
};

_ETL_END_NAMESPACE

#endif