source: sources/src/port_dependency.cc @ 27

/*------------------------------------------------------------\
|                                                             |
| Tool    :                  systemcass                       |
|                                                             |
| File    :                  port_dependency.cc               |
|                                                             |
| Author  :                 Buchmann Richard                  |
|                                                             |
| Date    :                   21_09_2004                      |
|                                                             |
\------------------------------------------------------------*/

/* 
 * This file is part of the Disydent Project
 * Copyright (C) Laboratoire LIP6 - Département ASIM
 * Universite Pierre et Marie Curie
 * 
 * Home page          : http://www-asim.lip6.fr/disydent
 * E-mail             : mailto:richard.buchmann@lip6.fr
 * 
 * This library is free software; you  can redistribute it and/or modify it
 * under the terms  of the GNU Library General Public  License as published
 * by the Free Software Foundation; either version 2 of the License, or (at
 * your option) any later version.
 * 
 * Disydent 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 the GNU C Library; see the  file COPYING. If not, write to the Free
 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <cstring>
#include <list>
#include <iostream>
#include <fstream>
#include "port_dependency.h"
#include "simplify_string.h"
#include "sc_fwd.h"
#include "sc_object.h"
#include "sc_module.h"
#include "sc_port.h"
#include "sc_ver_ext.h"
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

using namespace std;

namespace sc_core {

static PortDependencyGraph aPortDependencyGraph;

const PortDependencyGraph& 
get_port_dependency_graph ()
{
        return aPortDependencyGraph;
}

static
void
check_port_dependency_declaration (const sc_port_base* a, 
                                   const sc_port_base& b)
{
  const sc_module &moduleA = a->get_module ();
  const sc_module &moduleB = b.get_module  ();
  if (check_port_dependencies && (&moduleA != &moduleB))
  {
    const char *module_nameA = moduleA.basename ();
    const char *module_nameB = moduleB.basename ();
    if (strlen (module_nameA) == 0)
      module_nameA = "<top level>";
    cerr << "Error : Port dependency declaration in '"
         << module_name_stack.back () << "' constructor is wrong.\n" 
         << "'" << a->name () << "' and '" << b.name ()
         << "' are ports of two differents modules ("
         << module_nameA << " and " 
         << module_nameB << "). "
         << "You can't declare any port dependency like that.\n";
    exit (37); //15092005);
  }
  if (module_name_stack.empty ())
  {
    cerr << "Error : Port dependency declaration is wrong.\n" 
         << "The dependency declaration of '" 
         << a->name () << "' and '" << b.name ()
         << "' is not in any sc_module constructor.\n";
    exit (16092005);
  }
  if (method_process_list.empty ())
  {
    cerr << "Error : Port dependency declaration in '"
         << module_name_stack.back () << "' constructor is wrong.\n" 
         << "The dependency of '" << a->name () << "' and '" << b.name ()
         << "' should be linked to a SC_METHOD.\n";         
    exit(165); //17092005);
  }
}

void 
set_port_dependency          (const sc_port_base* a, 
                              const sc_port_base& b)
{
  check_port_dependency_declaration (a,b);
        PortDependency p;
        p.method = method_process_list.back();
        p.source = a;
        p.destination = &b;
        aPortDependencyGraph.push_back (p);
#ifdef DUMP_PORT_DEPENDENCY
        if (a) {
                cerr << "'" << ((sc_object&)b).name()
             << "' depends on '" 
                           << ((sc_object*)a)->name () 
         << "' in '" << p.method->name << "' function.\n";
        } else
                cerr << "'" << ((sc_object&)b).name()
             << "' doesn't depend on anything"
         << " in '" << p.method->name << "' function.\n";
#endif
}

static
void
dot_write (ofstream &o, const PortDependencyGraph &g)
{
        string s;
        PortDependencyGraph::const_iterator it;
        for (it = g.begin (); it != g.end (); ++it)
        {
                if (it->source == NULL)
                        continue;
                const char *name;
                name = ((sc_object*)it->source)->name();
                o << simplify_name(name,s);
                o       << " -> ";
                name = ((sc_object*)it->destination)->name();
                o << simplify_name(name,s);
          o << "\n";
        }
}

bool
PortDependencyGraph2dot (const char *name,
                         const PortDependencyGraph& g)
{
        if (!name)
                return false;
        string filename;
        filename =  name;
        filename += ".dot";
        ofstream o;
  o.open (filename.c_str(),ios::out | ios::trunc);
        if (o.is_open () == false)
                return false;
        o << "// Port dependency graph\n"
       "// Generated by "
    << sc_version () << "\n";
        o << "strict digraph " << name << " {\n";
        dot_write (o,g);
        o << "}\n";
        o.close ();
  if (dump_stage)
    cerr << "Port Dependency Graph written into '" 
         << filename << "'.\n";
        return true;
}

} // end of sc_core namespace