dferry/transport/itransportlistener.h

0001 /*
0002    Copyright (C) 2013 Andreas Hartmetz <ahartmetz@gmail.com>
0003
0004    This library is free software; you can redistribute it and/or
0005    modify it under the terms of the GNU Library General Public
0006    License as published by the Free Software Foundation; either
0007    version 2 of the License, or (at your option) any later version.
0008
0009    This library is distributed in the hope that it will be useful,
0010    but WITHOUT ANY WARRANTY; without even the implied warranty of
0011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
0012    Library General Public License for more details.
0013
0014    You should have received a copy of the GNU Library General Public License
0015    along with this library; see the file COPYING.LGPL.  If not, write to
0016    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
0017    Boston, MA 02110-1301, USA.
0018
0019    Alternatively, this file is available under the Mozilla Public License
0020    Version 1.1.  You may obtain a copy of the License at
0021    http://www.mozilla.org/MPL/
0022 */
0023
0024 #ifndef ITRANSPORTLISTENER_H
0025 #define ITRANSPORTLISTENER_H
0026
0027 #include "iovaluetypes.h"
0028
0029 class ITransport;
0030
0031 class ITransportListener
0032 {
0033 public:
0034     ITransportListener();
0035     virtual ~ITransportListener();
0036
0037     ITransport *readTransport() const;
0038     ITransport *writeTransport() const;
0039
0040     // public mainly for testing purposes - only call if you know what you're doing
0041     // no-op default implementations are provided so you only need to reimplement what you need
0042     virtual IO::Status handleTransportCanRead();
0043     virtual IO::Status handleTransportCanWrite();
0044
0045 protected:
0046     uint32 m_ioInterest = 0;
0047     friend class ITransport;
0048 private:
0049     void updateIoInterest(IO::RW which, bool enable);
0050     ITransport *m_readTransport = nullptr; // set from ITransport::setReadListener()
0051     ITransport *m_writeTransport = nullptr; // set from ITransport::setWriteListener()
0052 };
0053
0054 #endif // ITRANSPORTLISTENER_H