semaphore.h

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/*
 * libsynthclone - a plugin API for `synthclone`
 * Copyright (C) 2011-2012 Devin Anderson
 *
 * This library 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 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 __SYNTHCLONE_SEMAPHORE_H__
#define __SYNTHCLONE_SEMAPHORE_H__
 
#if defined(SYNTHCLONE_PLATFORM_MACX) || defined(SYNTHCLONE_PLATFORM_UNIX)
#include <semaphore.h>
#elif defined(SYNTHCLONE_PLATFORM_WIN32)
#include <unistd.h>
#include <windows.h>
#else
#error "A semaphore implementation has not been defined for your platform"
#endif
 
#include <QtCore/QObject>
#include <QtCore/QString>
 
namespace synthclone {
 
    class Semaphore: public QObject {
 
        Q_OBJECT
 
    public:
 
        explicit
        Semaphore(QObject *parent=0);
 
        ~Semaphore();
 
        void
        post();
 
        void
        wait();
 
    private:
 
        QString
        getErrorMessage();
 
#if defined(SYNTHCLONE_PLATFORM_MACX)
        QByteArray name;
        sem_t *semaphore;
#elif defined(SYNTHCLONE_PLATFORM_UNIX)
        sem_t semaphore;
#elif defined(SYNTHCLONE_PLATFORM_WIN32)
        HANDLE semaphore;
#endif
 
    };
 
}
 
#endif