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/*
* This file is part of rasdaman community.
*
* Rasdaman community is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Rasdaman community is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with rasdaman community. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann /
rasdaman GmbH.
*
* For more information please see <http://www.rasdaman.org>
* or contact Peter Baumann via <baumann@rasdaman.com>.
/
/**
* INCLUDE: akgnet_selector.hh
*
* MODULE: akg network
* CLASS: Selector
*
* COMMENTS:
* Namespace akg
*
*/
#ifndef AKGNET_SELECTOR
#define AKGNET_SELECTOR
#include "akgnet_common.hh"
namespace akg
{
/** This class envelops the 'select' function of the C-library
*/
class Selector
{
public:
/// Default constructor
Selector() throw();
/// Sets the timeout interval
void setTimeout(int sec,int milisec) throw();
/// Disables the timeout
void disableTimeout() throw();
/// Registers the file descriptor for reading
void setRead(int fdescr) throw();
/// Unregisters the file descriptor from reading
void clearRead(int fdescr) throw();
/// Registers the file descriptor for writing
void setWrite(int fdescr) throw();
/// Unregisters the file descriptor from writing
void clearWrite(int fdescr) throw();
/// The real 'select' operation. The return value is the one of 'select'
int operator()() throw();
/// Returns true if the file descriptor is registered for read
bool isRead(int fdescr) throw();
/// Returns true if the file descriptor is registered for write
bool isWrite(int fdescr) throw();
/** Closes all file descriptors. Usefull when forking so
child processes don't inherit this file descriptors
*/
void closeForcedAllFileDescriptors() throw();
private:
fd_set watchReadFdSet;
fd_set watchWriteFdSet;
fd_set watchExceptFdSet; // unused but ...
fd_set resultReadFdSet;
fd_set resultWriteFdSet;
fd_set resultExceptFdSet; // unused but ...
struct timeval tvinit;
struct timeval tv;
timeval *tvptr;
};
} // namespace
#endif
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