diff options
author | Joerg Bornemann <joerg.bornemann@nokia.com> | 2011-12-30 15:20:32 +0100 |
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committer | Qt by Nokia <qt-info@nokia.com> | 2012-01-24 14:39:58 +0100 |
commit | 096b49bc1e66af2e6347bafc435b361a15639872 (patch) | |
tree | 920b05de682722d8c99547aee0ce6530613ebe00 /src/corelib/io/qwinoverlappedionotifier_p.h | |
parent | 746c148c95f65c305c2b9ff27ca4a597a72cc6aa (diff) |
QWinOverlappedIoNotifier introduced
For asynchronous (overlapped) I/O notification on Windows one
can now use the convenience class QWinOverlappedIoNotifier.
It's using one global I/O completion port and a watching thread to
get notified when a read or write operation completes.
Change-Id: If6f904b364be0405580c7e50355529ab136ae3cb
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>
Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com>
Diffstat (limited to 'src/corelib/io/qwinoverlappedionotifier_p.h')
-rw-r--r-- | src/corelib/io/qwinoverlappedionotifier_p.h | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/src/corelib/io/qwinoverlappedionotifier_p.h b/src/corelib/io/qwinoverlappedionotifier_p.h new file mode 100644 index 0000000000..2924c21117 --- /dev/null +++ b/src/corelib/io/qwinoverlappedionotifier_p.h @@ -0,0 +1,101 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtCore module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** 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, Nokia gives you certain additional +** rights. These rights are described in the Nokia 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. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QWINOVERLAPPEDIONOTIFIER_P_H +#define QWINOVERLAPPEDIONOTIFIER_P_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists purely as an +// implementation detail. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +#include <qobject.h> +#include <qt_windows.h> + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +QT_MODULE(Core) + +class Q_CORE_EXPORT QWinOverlappedIoNotifier : public QObject +{ + Q_OBJECT +public: + QWinOverlappedIoNotifier(QObject *parent = 0); + ~QWinOverlappedIoNotifier(); + + void setHandle(HANDLE h); + HANDLE handle() const { return hHandle; } + + void setEnabled(bool enabled); + bool waitForNotified(int msecs); + +Q_SIGNALS: + void notified(DWORD numberOfBytes, DWORD errorCode); + void _q_notify(); + +private Q_SLOTS: + void _q_notified(); + +private: + void notify(DWORD numberOfBytes, DWORD errorCode); + +private: + HANDLE hHandle; + HANDLE hEvent; + DWORD lastNumberOfBytes; + DWORD lastErrorCode; + + friend class QWinIoCompletionPort; +}; + +QT_END_NAMESPACE + +QT_END_HEADER + +#endif // QWINOVERLAPPEDIONOTIFIER_P_H |