jack2/windows/JackWinMutex.h

/*
 Copyright (C) 2004-2008 Grame
 
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU Lesser General Public License as published by
 the Free Software Foundation; either version 2.1 of the License, or
 (at your option) any later version.
 
 This program 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 program; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 
 */


#ifndef __JackWinMutex__
#define __JackWinMutex__

#include <windows.h>

namespace Jack
{
/*!
\brief Mutex abstraction.
*/
class JackWinMutex
{

    protected:

        HANDLE fMutex;

    public:

        JackWinMutex()
        {
            // In recursive mode by default
            fMutex = (HANDLE)CreateMutex(0, FALSE, 0);
        }

        virtual ~JackWinMutex()
        {
            CloseHandle(fMutex);
        }

        bool Lock()
        {
            return (WAIT_OBJECT_0 == WaitForSingleObject(fMutex, INFINITE));
        }

        bool Trylock()
        {
            return (WAIT_OBJECT_0 == WaitForSingleObject(fMutex, 0));
        }

        bool Unlock()
        {
            return(ReleaseMutex(fMutex) != 0);
        }

};

} // namespace

#endif