app.cc

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/* -*-  Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
/*
 * Copyright (c) 1997 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the Daedalus Research
 *      Group at the University of California Berkeley.
 * 4. Neither the name of the University nor of the Laboratory may be used
 *    to endorse or promote products derived from this software without
 *    specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * Contributed by the Daedalus Research Group, http://daedalus.cs.berkeley.edu
 *
 */

#include "app.h"
#include "agent.h"


static class ApplicationClass : public TclClass {
 public:
        ApplicationClass() : TclClass("Application") {}
        TclObject* create(int, const char*const*) {
                return (new Application);
        }
} class_application;


Application::Application() : enableRecv_(0), enableResume_(0)
{
}


int Application::command(int argc, const char*const* argv)
{
        Tcl& tcl = Tcl::instance();

        if (argc == 2) {
                if (strcmp(argv[1], "start") == 0) {
                        // enableRecv_ only if recv() exists in Tcl
                        tcl.evalf("[%s info class] info instprocs", name_);
                        char result[1024];
                        sprintf(result, " %s ", tcl.result());
                        enableRecv_ = (strstr(result, " recv ") != 0);
                        enableResume_ = (strstr(result, " resume ") != 0);
                        start();
                        return (TCL_OK);
                }
                if (strcmp(argv[1], "stop") == 0) {
                        stop();
                        return (TCL_OK);
                }
                if (strcmp(argv[1], "agent") == 0) {
                        tcl.resultf("%s", agent_->name());
                        return (TCL_OK);
                }
        }
        else if (argc == 3) {
                if (strcmp(argv[1], "attach-agent") == 0) {
                        agent_ = (Agent*) TclObject::lookup(argv[2]);
                        if (agent_ == 0) {
                                tcl.resultf("no such agent %s", argv[2]);
                                return(TCL_ERROR);
                        }
                        agent_->attachApp(this);
                        return(TCL_OK);
                }
                if (strcmp(argv[1], "send") == 0) {
                        send(atoi(argv[2]));
                        return(TCL_OK);
                }
        }
        return (Process::command(argc, argv));
}


void Application::start()
{
}


void Application::stop()
{
}


void Application::send(int nbytes)
{
        agent_->sendmsg(nbytes);
}


void Application::recv(int nbytes)
{
        if (! enableRecv_)
                return;
        Tcl& tcl = Tcl::instance();
        tcl.evalf("%s recv %d", name_, nbytes);
}


void Application::resume()
{
        if (! enableResume_)
                return;
        Tcl& tcl = Tcl::instance();
        tcl.evalf("%s resume", name_);
}

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