Autolock.h

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/*
 * Copyright (c) 2005 Palmsource, Inc.
 * 
 * This software is licensed as described in the file LICENSE, which
 * you should have received as part of this distribution. The terms
 * are also available at http://www.openbinder.org/license.html.
 * 
 * This software consists of voluntary contributions made by many
 * individuals. For the exact contribution history, see the revision
 * history and logs, available at http://www.openbinder.org
 */

#ifndef _SUPPORT_AUTOLOCK_H
#define _SUPPORT_AUTOLOCK_H

#include <support/Locker.h>

#if _SUPPORTS_NAMESPACE
namespace palmos {
namespace support {
#endif

/*-----------------------------------------------------------------*/
/*----- SAutolock class -------------------------------------------*/



class SAutolock 
{
public:
    inline              SAutolock(const lock_status_t& status);
    inline              SAutolock();
    inline              ~SAutolock();       
    inline  bool        IsLocked();

    inline  void        SetTo(const lock_status_t& status);
    inline  void        Unlock();

private:
                        SAutolock(const SAutolock&);
            SAutolock&  operator = (const SAutolock&);

    lock_status_t   m_status;
};

/*-------------------------------------------------------------*/
/*---- No user serviceable parts after this -------------------*/

inline SAutolock::SAutolock(const lock_status_t& status)
    :   m_status(status)
{
}

inline SAutolock::SAutolock()
    :   m_status(-1)
{
}

inline SAutolock::~SAutolock()
{
    m_status.unlock();
}

inline bool SAutolock::IsLocked()
{
    return m_status.is_locked();
}

inline void SAutolock::SetTo(const lock_status_t& status)
{
    m_status.unlock();
    m_status = status;
}

inline void SAutolock::Unlock()
{
    m_status.unlock();
    m_status = lock_status_t(-1);
}

#if _SUPPORTS_NAMESPACE
} } // namespace palmos::support
#endif

#endif /* _SUPPORT_AUTOLOCK_H */

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