source: sources/src/graph_cass.cc @ 4

/*------------------------------------------------------------\
|                                                             |
| Tool    :                  systemcass                       |
|                                                             |
| File    :                 graph_cass.cc                     |
|                                                             |
| Author  :                 Petrot Frédéric                   |
|                           Taktak Sami                       |
|                           Buchmann Richard                  |
|                                                             |
| Date    :                   09_07_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.
 */

/*
 * $Log: graph_cass.cc,v $
 * Revision 1.5  2006/06/12 14:02:04  buchmann
 * - Now sort transition and generation functions by fonction pointer
 *   (Thank to Nicolas Pouillon)
 * - Add Nicolas Pouillon as contributor into splash screen
 * - Rename files and classes from "dependancy" to "dependency".
 * - Add some references to bibliography file
 * - Add licence note to every files
 * - Rename "module graph" to "process graph"
 * - Now dump module graph when using --t option and CASS scheduling at the same
 *   time
 *
 * Bug fixes :
 * - check user time ( != 0) before computing simulation performance
 * - Remove reinterpret_cast (for pending write) because of unexpected results
 * - Add ASSERT in trace functions
 *
 * Revision 1.4  2005/09/14 14:08:24  buchmann
 * Add Werror flag to compile the debug library.
 * Split sc_clock implementation from sc_port to sc_clock.
 * Add a helper message to write mealy functions avoiding combinational cycle.
 *
 * Bug fix :
 * - cvs rules is no longer circular
 * - bit2string
 * - port binding (sc_in to sc_out)
 * - error message from FSM rules checker
 * - sc_time copy operator
 *
 * Code cleaning :
 * - remove duplicated code (entity.cc and sc_port.cc)
 * - remove duplicated declarations (internal_ext.h and internal.h)
 *
 * Revision 1.3  2005/06/22 09:15:03  buchmann
 * Add some *_ext.h files to split internal implementation from API interface.
 *
 * Add -Wunused to detect unused functions.
 *
 * Include directory now contains API interface file only.
 *
 * Declar all the implementation/interface inside sc_core namespace as LRM 2.1
 * advices.
 *
 * Remove casc namespace.
 *
 * Clean up dead code segments.
 *
 * Add hexadecimal dumping support.
 *
 * Add empty implementation of functions for object hierarchy traversal. (LRM 2.1)
 *
 * Bug fixes :
 * - reference return of the following functions : operators =, |=, &= and so on.
 * - range functions now return an sc_int_subref instead of an int.
 *
 * Revision 1.2  2005/05/30 12:33:50  buchmann
 * Makefile :
 * - use ${...} form instead of $(...) one.
 * - add entity file object and entity, sc_signal headers.
 *
 * Split sc_signal(s)/sc_port(s) into two separate files.
 * Add some codes to check hex2string function.
 * Add some informations about -rdynamic when there is an error using dlopen.
 * Add some ASSERT(s) for debug library.
 * Add module name into the warning printing.
 * Minor changes for PAT traces.
 *
 * Revision 1.1  2004/09/27 14:40:13  buchmann
 * bug fix :
 * - allow the use of user-defined structs in sc_signal/sc_in/sc_out/sc_inout
 * - use sc_dt namespace like official SystemC engine
 *
 * add :
 * - dump the signal/port/module dependancy graph in dot format
 *
 * Graph library is now splitted from the SystemCASS specific code.
 *
 */

#include <iostream>
#include <fstream>
#include <stdio.h>
#include <map>
#include <string>

#include "graph_cass.h"
#include "sc_sensitive.h"
#include "sc_module.h"
#include "sc_port.h"
#include "entity.h"
#include "simplify_string.h" // simplify_string
#include "sc_ver_ext.h"      // sc_version for dumping to DOT

using namespace std;

namespace sc_core {

#if 0
static
ostream& operator << (ostream& o,
                      const Vertex & v)
{
#if 0
      if (v.arcs == NULL)
        o << v.name << "(" << v.module->ins_name << ")->(none)\n";
      Arc *a;
      for (a = v.arcs; a; a = a->next)
        o << v.name << "(" << v.module->ins_name << ")->"
                << a->tip->name << "(" << a->tip->module << ")\n";
  return o;
#endif
        method_process_t* m = (method_process_t*)(v.data);
  if (v.arcs == NULL)
          o << *m << "\n";
  Arc *a;
  for (a = v.arcs; a; a = a->next) {
          method_process_t* m2 = (method_process_t*)(a->tip->data);
    o << *m << "->"
                  << *m2 << ")\n";
        }
  return o;

}
#endif

#if 0
static
ostream& 
operator << (ostream &o,
                         const Graph &g)
{
  Vertex     *v;
    for (v = g.vertices; v < g.vertices + g.n; v++) {
        o << *v;
    }
    return o;
}
#endif

std::map<const method_process_t*,Vertex*> m_v;

/* Ajoute un arc */ 
void add_arcs(const method_process_t &mp, const sc_module &module)
{
        std::map<const method_process_t*,Vertex*>::iterator i;
  for (i =      m_v.begin ();    i != m_v.end (); ++i) {
          if (i->first->module == &module)
                        new_arc (m_v[&mp],i->second);
        }
}

/* Ajoute un arc */ 
void add_arcs(const  method_process_t &mp,
              tab_t *signal_pointer)
{
  equi_t &e = get_equi (signal_pointer);
  equi_t::iterator i;
  for (i = e.begin (); i != e.end (); ++i) {
                const char *kind = i->kind ();
    if (strstr (kind,"out")) {
                        const sc_port_base &port = *(i->port);
                  const sc_module &module = port.get_module ();
                        if (&module == mp.module)
                                continue;
                        add_arcs (mp, module);
      break;
                }
  }
}

void
add_arcs(const method_process_t &mp)
{
  sensitivity_list_t::const_iterator port_bound;
        for (port_bound = mp.sensitivity_list.begin(); port_bound != mp.sensitivity_list.end(); ++port_bound) {
      // pour tous les ports/signaux p associés à la fonction au couple m
        /* si pp est un port de sortie d'une autre fonction de mealy,
           crée un arc entre m et mm */
        /* on ne peut pas savoir si un port est la sortie d'une fonction de mealy. 
           on va donc chercher à savoir si c'est un port de sortie d'un automate de moore,
           sinon on considère que c'est une sortie de mealy.
        */

      add_arcs(mp, port_bound->get_interface().get_pointer ());
    }
}

/* Construit le graph de dépendance des signaux de Mealy */
/* lm est la liste des fonctions de Mealy */
/* -----
   Graph
   -----
   node = module
   edge = dependency

   Vertex is an array of (method_process_t*)
   Edge is a couple Vertex->Vertex.
*/
extern Graph*
makegraph (const method_process_list_t *lm)
{
  method_process_list_t::const_iterator mp;

  int         n = 0; /* Number of vertices */
  Graph      *g;
  Vertex     *v;
  
  /* Compute the number of vertices in the graph:
   * The vertices set is the method set. */
  
/*  for (m = lm->begin(); m != lm->end(); m++)
    n++;*/
  n = lm->size ();
  
  /* Create the graph */
  g = gb_new_graph(n);

  /* Associate the netlist elements to the graph vertices, and vice-versa */
  v = g->vertices;

  /* initialisation des vertices */
  for (mp = lm->begin(); mp != lm->end(); ++mp) {
    v->data = *mp;
    m_v[*mp] = v++;
  }

  for (mp = lm->begin(); mp != lm->end(); ++mp) { 
    // pour tous couples m, instance module/function de la liste lm
    add_arcs (**mp);
  }

  return g;
}   

/* 
void 
dot_write_edge (const  method_process_t &mp,
                tab_t *signal_pointer)
{
  equi_t &e = get_equi (signal_pointer);
  equi_t::iterator i;
  for (i = e.begin (); i != e.end (); ++i) {
                const char *kind = i->kind ();
    if (strstr (kind,"out")) {
                        const sc_port_base &port = *(i->port);
                  const sc_module &module = port.get_module ();
                        if (&module == mp.module)
                                continue;
                        add_arcs (mp, module);
            o << "edge [label="
        << "];\n";
      o << " -> ";
      o << ";\n";
                }
  }
}

static
bool
dot_write_edge (ofstream &o,
                const method_process_t &mp)
{
  sensitivity_list_t::const_iterator port_bound;
        for (port_bound = mp.sensitivity_list.begin(); port_bound != mp.sensitivity_list.end(); ++port_bound)
      dot_write_edge (o, mp, port_bound->get_interface().get_pointer ());
}

static
bool
dot_write (ofstream &o,
           const method_process_list_t &lm)
{
  // Printing into dot file
  string s;
  method_process_list_t::const_iterator mp;
  for (mp = lm.begin(); mp != lm.end(); ++mp) {
    method_process_t *amp = *mp;
    sc_module *module = amp->module;
    o << "node [name="
//      << simplify_name(module.get_name().c_str(),s)
      << "];\n";
  }
  for (mp = lm->begin(); mp != lm->end(); ++mp)
    dot_write (o, **mp);
}
*/

static
string&
get_method_process_fullname (string &name, 
                             const method_process_t &mp)
{
  sc_module *module = mp.module;
  name = module->name ();
  name += "_";
  name += mp.name;
  return name;
}

static
bool
dot_write (ofstream &o,
           const Graph &g)
{
  string name1,name2,s;
  // Printing into dot file
  for (int i = 0; i < g.n; ++i)
  { // Printing node list
    Vertex *v = g.vertices + i;
    method_process_t *mp     = (method_process_t*) (v->data);
    get_method_process_fullname (name1,*mp);
    const char *pname1 = name1.c_str();
    o << "node [name=";
    o.width (35);
    o << simplify_name(pname1,s);
    o << "];\n";
  }
  for (int i = 0; i < g.n; ++i)
  { // Printing edge list
    Vertex *v1 = g.vertices + i;
    method_process_t *mp1     = (method_process_t*) (v1->data);
    get_method_process_fullname (name1,*mp1);
    const char *pname1 = name1.c_str();
    for (Arc *a = v1->arcs; a != NULL; a = a->next)
    {
      Vertex *v2 = a->tip;
      method_process_t *mp2 = (method_process_t*) (v2->data);
      get_method_process_fullname (name2,*mp2);
      const char *pname2 = name2.c_str();
      o.width (35);
      o << simplify_name(pname2,s);
      o << " -> ";
      o.width (35);
      o << simplify_name(pname1,s);
      o << ";\n";
    }
  }

  return true;
}

extern bool
graph2dot (const char *name,
           const Graph &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 << "// Module dependency graph\n"
       "// Generated by "
    << sc_version () << "\n";
        o << "strict digraph " << name << " {\n";
  o << "node [shape=box];\n";
//       "concentrate=true;\n";
  o << left;
        dot_write (o,g);
  // Closing dot file
        o << "}\n";
        o.close ();
  if (dump_stage)
    cerr << "Module dependency graph written into '" 
         << filename << "'.\n";
        return true;
}

} // end of sc_core namespace