source: trunk/tools/qvfb/qlock.cpp@ 763

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**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: Nokia Corporation ([email protected])
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** This file is part of the QtGui module of the Qt Toolkit.
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** Foundation and appearing in the file LICENSE.LGPL included in the
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#include "qlock_p.h"


#ifdef QT_NO_QWS_MULTIPROCESS

QT_BEGIN_NAMESPACE

/* no multiprocess - use a dummy */

QLock::QLock(const QString & /*filename*/, char /*id*/, bool /*create*/)
    : type(Read), data(0)
{
}

QLock::~QLock()
{
}

bool QLock::isValid() const
{
    return true;
}

void QLock::lock(Type t)
{
    data = (QLockData *)-1;
    type = t;
}

void QLock::unlock()
{
    data = 0;
}

bool QLock::locked() const
{
    return data;
}

QT_END_NAMESPACE

#else // QT_NO_QWS_MULTIPROCESS

#include "qwssignalhandler_p.h"

#include <unistd.h>
#include <sys/types.h>
#if defined(Q_OS_DARWIN)
#   define Q_NO_SEMAPHORE
#   include <sys/stat.h>
#   include <sys/file.h>
#else // Q_OS_DARWIN
#   include <sys/sem.h>
#   if (defined(__GNU_LIBRARY__) && !defined(_SEM_SEMUN_UNDEFINED) && !defined(QT_LINUXBASE)) \
    || defined(Q_OS_FREEBSD) || defined(Q_OS_OPENBSD) || defined(Q_OS_NETBSD) \
    || defined(Q_OS_BSDI)
        /* union semun is defined by including <sys/sem.h> */
#   else
/* according to X/OPEN we have to define it ourselves */
union semun {
    int val;                    /* value for SETVAL */
    struct semid_ds *buf;       /* buffer for IPC_STAT, IPC_SET */
    unsigned short *array;      /* array for GETALL, SETALL */
};
#   endif
#endif // Q_OS_DARWIN
#include <sys/ipc.h>
#include <string.h>
#include <errno.h>
#include <qdebug.h>
#include <signal.h>