iohook.cc
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- //
- // iohook.cc : IO Hook for Diffusion
- // Authors : Fabio Silva and Yutaka Mori
- //
- // Copyright (C) 2000-2002 by the University of Southern California
- // $Id: iohook.cc,v 1.2 2005/09/13 04:53:49 tomh Exp $
- //
- // This program is free software; you can redistribute it and/or
- // modify it under the terms of the GNU General Public License,
- // version 2, as published by the Free Software Foundation.
- //
- // This program 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 this program; if not, write to the Free Software Foundation, Inc.,
- // 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
- //
- // Linking this file statically or dynamically with other modules is making
- // a combined work based on this file. Thus, the terms and conditions of
- // the GNU General Public License cover the whole combination.
- //
- // In addition, as a special exception, the copyright holders of this file
- // give you permission to combine this file with free software programs or
- // libraries that are released under the GNU LGPL and with code included in
- // the standard release of ns-2 under the Apache 2.0 license or under
- // otherwise-compatible licenses with advertising requirements (or modified
- // versions of such code, with unchanged license). You may copy and
- // distribute such a system following the terms of the GNU GPL for this
- // file and the licenses of the other code concerned, provided that you
- // include the source code of that other code when and as the GNU GPL
- // requires distribution of source code.
- //
- // Note that people who make modified versions of this file are not
- // obligated to grant this special exception for their modified versions;
- // it is their choice whether to do so. The GNU General Public License
- // gives permission to release a modified version without this exception;
- // this exception also makes it possible to release a modified version
- // which carries forward this exception.
- //
- #include <stdio.h>
- #include <stdlib.h>
- #include "iohook.hh"
- IOHook::IOHook() : DiffusionIO()
- {
- }
- DiffPacket IOHook::recvPacket(int fd)
- {
- DeviceList::iterator device_itr;
- DiffPacket incoming_packet = NULL;
- for (device_itr = in_devices_.begin();
- device_itr != in_devices_.end(); ++device_itr){
- if ((*device_itr)->hasFD(fd)){
- // We now have the correct device
- incoming_packet = (*device_itr)->recvPacket(fd);
- break;
- }
- }
- // Make sure packet was received
- if (incoming_packet == NULL){
- DiffPrint(DEBUG_ALWAYS, "Cannot read packet from driver !n");
- return NULL;
- }
- return incoming_packet;
- }
- void IOHook::sendPacket(DiffPacket pkt, int len, int dst)
- {
- DeviceList::iterator device_itr;
- for (device_itr = out_devices_.begin();
- device_itr != out_devices_.end(); ++device_itr){
- (*device_itr)->sendPacket(pkt, len, dst);
- }
- }
- void IOHook::addInFDS(fd_set *fds, int *max)
- {
- DeviceList::iterator device_itr;
- for (device_itr = in_devices_.begin();
- device_itr != in_devices_.end(); ++device_itr){
- (*device_itr)->addInFDS(fds, max);
- }
- }
- int IOHook::checkInFDS(fd_set *fds)
- {
- DeviceList::iterator device_itr;
- int fd;
- for (device_itr = in_devices_.begin();
- device_itr != in_devices_.end(); ++device_itr){
- fd = (*device_itr)->checkInFDS(fds);
- if (fd != 0)
- return fd;
- }
- return 0;
- }