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Diffstat (limited to 'src/corelib/io/qlockfile.h')
-rw-r--r-- | src/corelib/io/qlockfile.h | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/src/corelib/io/qlockfile.h b/src/corelib/io/qlockfile.h new file mode 100644 index 0000000000..4c8b6bf31a --- /dev/null +++ b/src/corelib/io/qlockfile.h @@ -0,0 +1,91 @@ +/**************************************************************************** +** +** Copyright (C) 2013 David Faure <faure+bluesystems@kde.org> +** Contact: http://www.qt-project.org/legal +** +** 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 Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QLOCKFILE_H +#define QLOCKFILE_H + +#include <QtCore/qstring.h> +#include <QtCore/qscopedpointer.h> + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +class QLockFilePrivate; + +class Q_CORE_EXPORT QLockFile +{ +public: + QLockFile(const QString &fileName); + ~QLockFile(); + + bool lock(); + bool tryLock(int timeout = 0); + void unlock(); + + void setStaleLockTime(int); + int staleLockTime() const; + + bool isLocked() const; + bool getLockInfo(qint64 *pid, QString *hostname, QString *appname) const; + bool removeStaleLockFile(); + + enum LockError { + NoError = 0, + LockFailedError = 1, + PermissionError = 2, + UnknownError = 3 + }; + LockError error() const; + +protected: + QScopedPointer<QLockFilePrivate> d_ptr; + +private: + Q_DECLARE_PRIVATE(QLockFile) + Q_DISABLE_COPY(QLockFile) +}; + +QT_END_NAMESPACE + +QT_END_HEADER + +#endif // QLOCKFILE_H |