dynalink.cc
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- // -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*-
- /*
- * Copyright (C) 1997 by the University of Southern California
- * $Id: dynalink.cc,v 1.10 2005/08/25 18:58:06 johnh 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.
- *
- *
- * The copyright of this module includes the following
- * linking-with-specific-other-licenses addition:
- *
- * In addition, as a special exception, the copyright holders of
- * this module give you permission to combine (via static or
- * dynamic linking) this module 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 module 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 module
- * 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.
- *
- */
- //
- // Author: Kannan Varadhan <kannan@isi.edu>
- // Version Date: Mon Jun 30 15:51:33 PDT 1997
- #ifndef lint
- static const char rcsid[] =
- "@(#) $Header: /cvsroot/nsnam/ns-2/link/dynalink.cc,v 1.10 2005/08/25 18:58:06 johnh Exp $ (USC/ISI)";
- #endif
- #include "connector.h"
- // #include "packet.h"
- // #include "queue.h"
- class DynamicLink : public Connector {
- public:
- DynamicLink() : down_(0), status_(1) { bind("status_", &status_); }
- protected:
- int command(int argc, const char*const* argv);
- void recv(Packet* p, Handler* h);
- NsObject* down_;
- int status_;
- };
- static class DynamicLinkClass : public TclClass {
- public:
- DynamicLinkClass() : TclClass("DynamicLink") {}
- TclObject* create(int, const char*const*) {
- return (new DynamicLink);
- }
- } class_dynamic_link;
- int DynamicLink::command(int argc, const char*const* argv)
- {
- if (argc == 2) {
- if (strcmp(argv[1], "status?") == 0) {
- Tcl::instance().result(status_ ? "up" : "down");
- return TCL_OK;
- }
- }
- return Connector::command(argc, argv);
- }
- void DynamicLink::recv(Packet* p, Handler* h)
- {
- if (status_)
- target_->recv(p, h);
- else
- drop(p);
- }