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 "JackCompilerDeps.h"
#include "JackException.h"
#include <windows.h>
#include <stdio.h>

namespace Jack
{

/*!
\brief Mutex abstraction.
*/
class SERVER_EXPORT JackBaseWinMutex
{

    protected:

        HANDLE fMutex;
        DWORD fOwner;

    public:

        JackBaseWinMutex():fOwner(0)
        {
            // In recursive mode by default
            fMutex = CreateMutex(NULL, FALSE, NULL);
            ThrowIf((fMutex == 0), JackException("JackBaseWinMutex: could not init the mutex"));
        }

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

        bool Lock();
        bool Trylock();
        bool Unlock();

};

class SERVER_EXPORT JackWinMutex
{

    protected:

        HANDLE fMutex;

    public:

        JackWinMutex(const char* name = NULL)
        {
            // In recursive mode by default
            if (name) {
                char buffer[MAX_PATH];
                snprintf(buffer, sizeof(buffer), "%s_%s", "JackWinMutex", name);
                fMutex = CreateMutex(NULL, FALSE, buffer);
            } else {
                fMutex = CreateMutex(NULL, FALSE, NULL);
            }

            ThrowIf((fMutex == 0), JackException("JackWinMutex: could not init the mutex"));
        }

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

        bool Lock();
        bool Trylock();
        bool Unlock();

};

class SERVER_EXPORT JackWinCriticalSection
{

    protected:

        CRITICAL_SECTION fSection;

    public:

        JackWinCriticalSection(const char* name = NULL)
        {
            InitializeCriticalSection(&fSection);
        }

        virtual ~JackWinCriticalSection()
        {
            DeleteCriticalSection(&fSection);
        }

        bool Lock();
        bool Trylock();
        bool Unlock();

};


} // namespace

#endif