117 lines
3.8 KiB
C++
117 lines
3.8 KiB
C++
/****************************************************************************
|
|
**
|
|
** Copyright (C) 2016 The Qt Company Ltd.
|
|
** Contact: https://www.qt.io/licensing/
|
|
**
|
|
** This file is part of the QtCore module of the Qt Toolkit.
|
|
**
|
|
** $QT_BEGIN_LICENSE:LGPL$
|
|
** Commercial License Usage
|
|
** Licensees holding valid commercial Qt licenses may use this file in
|
|
** accordance with the commercial license agreement provided with the
|
|
** Software or, alternatively, in accordance with the terms contained in
|
|
** a written agreement between you and The Qt Company. For licensing terms
|
|
** and conditions see https://www.qt.io/terms-conditions. For further
|
|
** information use the contact form at https://www.qt.io/contact-us.
|
|
**
|
|
** GNU Lesser General Public License Usage
|
|
** Alternatively, this file may be used under the terms of the GNU Lesser
|
|
** General Public License version 3 as published by the Free Software
|
|
** Foundation and appearing in the file LICENSE.LGPL3 included in the
|
|
** packaging of this file. Please review the following information to
|
|
** ensure the GNU Lesser General Public License version 3 requirements
|
|
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
|
|
**
|
|
** GNU General Public License Usage
|
|
** Alternatively, this file may be used under the terms of the GNU
|
|
** General Public License version 2.0 or (at your option) the GNU General
|
|
** Public license version 3 or any later version approved by the KDE Free
|
|
** Qt Foundation. The licenses are as published by the Free Software
|
|
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
|
|
** included in the packaging of this file. Please review the following
|
|
** information to ensure the GNU General Public License requirements will
|
|
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
|
|
** https://www.gnu.org/licenses/gpl-3.0.html.
|
|
**
|
|
** $QT_END_LICENSE$
|
|
**
|
|
****************************************************************************/
|
|
|
|
#include "qplatformdefs.h"
|
|
|
|
#include "qsharedmemory.h"
|
|
#include "qsharedmemory_p.h"
|
|
#include "qsystemsemaphore.h"
|
|
#include <qdebug.h>
|
|
|
|
#include <errno.h>
|
|
|
|
#ifndef QT_NO_SHAREDMEMORY
|
|
#include <sys/types.h>
|
|
#ifndef QT_POSIX_IPC
|
|
#include <sys/ipc.h>
|
|
#include <sys/shm.h>
|
|
#else
|
|
#include <sys/mman.h>
|
|
#endif
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
#endif //QT_NO_SHAREDMEMORY
|
|
|
|
#include "private/qcore_unix_p.h"
|
|
|
|
#ifndef QT_NO_SHAREDMEMORY
|
|
QT_BEGIN_NAMESPACE
|
|
|
|
QSharedMemoryPrivate::QSharedMemoryPrivate() :
|
|
#ifndef QT_NO_QOBJECT
|
|
QObjectPrivate(),
|
|
#endif
|
|
memory(nullptr), size(0), error(QSharedMemory::NoError),
|
|
#ifndef QT_NO_SYSTEMSEMAPHORE
|
|
systemSemaphore(QString()), lockedByMe(false),
|
|
#endif
|
|
#ifndef QT_POSIX_IPC
|
|
unix_key(0)
|
|
#else
|
|
hand(-1)
|
|
#endif
|
|
{
|
|
}
|
|
|
|
void QSharedMemoryPrivate::setErrorString(QLatin1String function)
|
|
{
|
|
// EINVAL is handled in functions so they can give better error strings
|
|
switch (errno) {
|
|
case EACCES:
|
|
errorString = QSharedMemory::tr("%1: permission denied").arg(function);
|
|
error = QSharedMemory::PermissionDenied;
|
|
break;
|
|
case EEXIST:
|
|
errorString = QSharedMemory::tr("%1: already exists").arg(function);
|
|
error = QSharedMemory::AlreadyExists;
|
|
break;
|
|
case ENOENT:
|
|
errorString = QSharedMemory::tr("%1: doesn't exist").arg(function);
|
|
error = QSharedMemory::NotFound;
|
|
break;
|
|
case EMFILE:
|
|
case ENOMEM:
|
|
case ENOSPC:
|
|
errorString = QSharedMemory::tr("%1: out of resources").arg(function);
|
|
error = QSharedMemory::OutOfResources;
|
|
break;
|
|
default:
|
|
errorString = QSharedMemory::tr("%1: unknown error %2").arg(function).arg(errno);
|
|
error = QSharedMemory::UnknownError;
|
|
#if defined QSHAREDMEMORY_DEBUG
|
|
qDebug() << errorString << "key" << key << "errno" << errno << EINVAL;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
QT_END_NAMESPACE
|
|
|
|
#endif // QT_NO_SHAREDMEMORY
|