sc_signal_ports.h

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/*****************************************************************************

  The following code is derived, directly or indirectly, from the SystemC
  source code Copyright (c) 1996-2014 by all Contributors.
  All Rights reserved.

  The contents of this file are subject to the restrictions and limitations
  set forth in the SystemC Open Source License (the "License");
  You may not use this file except in compliance with such restrictions and
  limitations. You may obtain instructions on how to receive a copy of the
  License at http://www.accellera.org/. Software distributed by Contributors
  under the License is distributed on an "AS IS" basis, WITHOUT WARRANTY OF
  ANY KIND, either express or implied. See the License for the specific
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 *****************************************************************************/

/*****************************************************************************

  sc_signal_ports.h -- The sc_signal<T> port classes.

  Original Author: Martin Janssen, Synopsys, Inc., 2001-05-21

  CHANGE LOG APPEARS AT THE END OF THE FILE
 *****************************************************************************/

#ifndef SC_SIGNAL_PORTS_H
#define SC_SIGNAL_PORTS_H


#include "sysc/communication/sc_event_finder.h"
#include "sysc/communication/sc_port.h"
#include "sysc/communication/sc_signal_ifs.h"
#include "sysc/datatypes/bit/sc_logic.h"
#include "sysc/tracing/sc_trace.h"

#if ! defined( SC_DISABLE_VIRTUAL_BIND )
#  define SC_VIRTUAL_ virtual
#else
#  define SC_VIRTUAL_ /* non-virtual */
#endif

namespace sc_core {

// ----------------------------------------------------------------------------
//  STRUCT : sc_trace_params
//
//  Struct for storing the trace file and object name of an sc_trace call.
//  FOR INTERNAL USE ONLY!
// ----------------------------------------------------------------------------

extern void sc_deprecated_add_trace();

struct sc_trace_params
{
    sc_trace_file*        tf;
    std::string      name;

    sc_trace_params( sc_trace_file* tf_, const std::string& name_ )
        : tf( tf_ ), name( name_ )
        {}
};


typedef std::vector<sc_trace_params*> sc_trace_params_vec;


// ----------------------------------------------------------------------------
//  CLASS : sc_in<T>
//
//  The sc_signal<T> input port class.
// ----------------------------------------------------------------------------

template <class T>
class sc_in
: public sc_port<sc_signal_in_if<T>,1,SC_ONE_OR_MORE_BOUND>
{
public:

    // typedefs

    typedef T                                             data_type;

    typedef sc_signal_in_if<data_type>                    if_type;
    typedef sc_port<if_type,1,SC_ONE_OR_MORE_BOUND>       base_type;
    typedef sc_in<data_type>                              this_type;
    typedef typename base_type::port_type                 base_port_type;

    typedef if_type                                       in_if_type;
    typedef base_type                                     in_port_type;
    typedef sc_signal_inout_if<data_type>                 inout_if_type;
    typedef sc_port<inout_if_type,1,SC_ONE_OR_MORE_BOUND> inout_port_type;

public:

    // constructors

    sc_in()
        : base_type(), m_traces( 0 ),
          m_change_finder_p(0)
        {}

    explicit sc_in( const char* name_ )
        : base_type( name_ ), m_traces( 0 ),
          m_change_finder_p(0)
        {}

    explicit sc_in( const in_if_type& interface_ )
        : base_type( CCAST<in_if_type&>( interface_ ) ), m_traces( 0 ),
          m_change_finder_p(0)
        {}

    sc_in( const char* name_, const in_if_type& interface_ )
        : base_type( name_, CCAST<in_if_type&>( interface_ ) ), m_traces( 0 ),
          m_change_finder_p(0)
        {}

    explicit sc_in( in_port_type& parent_ )
        : base_type( parent_ ), m_traces( 0 ),
          m_change_finder_p(0)
        {}

    sc_in( const char* name_, in_port_type& parent_ )
        : base_type( name_, parent_ ), m_traces( 0 ),
          m_change_finder_p(0)
        {}

    explicit sc_in( inout_port_type& parent_ )
        : base_type(), m_traces( 0 ),
          m_change_finder_p(0)
        { sc_port_base::bind( parent_ ); }

    sc_in( const char* name_, inout_port_type& parent_ )
        : base_type( name_ ), m_traces( 0 ),
          m_change_finder_p(0)
        { sc_port_base::bind( parent_ ); }

    sc_in( this_type& parent_ )
        : base_type( parent_ ), m_traces( 0 ),
          m_change_finder_p(0)
        {}

    sc_in( const char* name_, this_type& parent_ )
        : base_type( name_, parent_ ), m_traces( 0 ),
          m_change_finder_p(0)
        {}


    // destructor

    virtual ~sc_in()
        {
            remove_traces();
            delete m_change_finder_p;
        }


    // bind to in interface

    SC_VIRTUAL_ void bind( const in_if_type& interface_ )
        { sc_port_base::bind( CCAST<in_if_type&>( interface_ ) ); }

    SC_VIRTUAL_ void bind( in_if_type& interface_ )
        { this->bind( CCAST<const in_if_type&>( interface_ ) ); }

    void operator () ( const in_if_type& interface_ )
        { this->bind( interface_ ); }


    // bind to parent in port

    SC_VIRTUAL_ void bind( in_port_type& parent_ )
        { sc_port_base::bind( parent_ ); }

    void operator () ( in_port_type& parent_ )
        { this->bind( parent_ ); }


    // bind to parent inout port

    SC_VIRTUAL_ void bind( inout_port_type& parent_ )
        { sc_port_base::bind( parent_ ); }

    void operator () ( inout_port_type& parent_ )
        { this->bind( parent_ ); }


    // interface access shortcut methods

    // get the default event

    const sc_event& default_event() const
        { return (*this)->default_event(); }


    // get the value changed event

    const sc_event& value_changed_event() const
        { return (*this)->value_changed_event(); }


    // read the current value

    const data_type& read() const
        { return (*this)->read(); }

    operator const data_type& () const
        { return (*this)->read(); }


    // was there a value changed event?

    bool event() const
        { return (*this)->event(); }


    // (other) event finder method(s)

    sc_event_finder& value_changed() const
    {
        if ( !m_change_finder_p )
        {
            m_change_finder_p = new sc_event_finder_t<in_if_type>(
                *this, &in_if_type::value_changed_event );
        }
        return *m_change_finder_p;
    }


    // called when elaboration is done
    /*  WHEN DEFINING THIS METHOD IN A DERIVED CLASS, */
    /*  MAKE SURE THAT THIS METHOD IS CALLED AS WELL. */

    virtual void end_of_elaboration();

    virtual const char* kind() const
        { return "sc_in"; }


    void add_trace( sc_trace_file*, const std::string& ) const;

    // called by sc_trace
    void add_trace_internal( sc_trace_file*, const std::string& ) const;

protected:

    void remove_traces() const;

    mutable sc_trace_params_vec* m_traces;

protected:

    // called by pbind (for internal use only)
    virtual int vbind( sc_interface& );
    virtual int vbind( sc_port_base& );

    // implement virtual base_type port-binding function
    //  - avoids warnings on some compilers
    //  - should only be called, when using sc_port_b explicitly
    //  - errors are detected during elaboration

    SC_VIRTUAL_ void bind( base_port_type& parent_ )
        { sc_port_base::bind( parent_ ); }


private:
  mutable sc_event_finder* m_change_finder_p;

private:

    // disabled
    sc_in( const this_type& );
    this_type& operator = ( const this_type& );

#ifdef __GNUC__
    // Needed to circumvent a problem in the g++-2.95.2 compiler:
    // This unused variable forces the compiler to instantiate
    // an object of T template so an implicit conversion from
    // read() to a C++ intrinsic data type will work.
    static data_type dummy;
#endif
};

template<typename T>
::std::ostream& operator << ( ::std::ostream& os, const sc_in<T>& a )
{
    return os << a->read();
}

// IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII


// called when elaboration is done

template <class T>
inline
void
sc_in<T>::end_of_elaboration()
{
    if( m_traces != 0 ) {
        for( int i = 0; i < (int)m_traces->size(); ++ i ) {
            sc_trace_params* p = (*m_traces)[i];
            in_if_type* iface = DCAST<in_if_type*>( this->get_interface() );
            sc_trace( p->tf, iface->read(), p->name );
        }
        remove_traces();
    }
}


// called by sc_trace

template <class T>
inline
void
sc_in<T>::add_trace_internal( sc_trace_file* tf_, const std::string& name_ ) 
const
{
    if( tf_ != 0 ) {
        if( m_traces == 0 ) {
            m_traces = new sc_trace_params_vec;
        }
        m_traces->push_back( new sc_trace_params( tf_, name_ ) );
    }
}

template <class T>
inline
void
sc_in<T>::add_trace( sc_trace_file* tf_, const std::string& name_ ) 
const
{
    sc_deprecated_add_trace();
    add_trace_internal(tf_, name_);
}

template <class T>
inline
void
sc_in<T>::remove_traces() const
{
    if( m_traces != 0 ) {
        for( int i = (int)m_traces->size() - 1; i >= 0; -- i ) {
            delete (*m_traces)[i];
        }
        delete m_traces;
        m_traces = 0;
    }
}


// called by pbind (for internal use only)

template <class T>
inline
int
sc_in<T>::vbind( sc_interface& interface_ )
{
    return sc_port_b<if_type>::vbind( interface_ );
}

template <class T>
inline
int
sc_in<T>::vbind( sc_port_base& parent_ )
{
    in_port_type* in_parent = DCAST<in_port_type*>( &parent_ );
    if( in_parent != 0 ) {
        sc_port_base::bind( *in_parent );
        return 0;
    }
    inout_port_type* inout_parent = DCAST<inout_port_type*>( &parent_ );
    if( inout_parent != 0 ) {
        sc_port_base::bind( *inout_parent );
        return 0;
    }
    // type mismatch
    return 2;
}


// ----------------------------------------------------------------------------
//  CLASS : sc_in<bool>
//
//  Specialization of sc_in<T> for type bool.
// ----------------------------------------------------------------------------

template <>
class sc_in<bool> : 
    public sc_port<sc_signal_in_if<bool>,1,SC_ONE_OR_MORE_BOUND>
{
public:

    // typedefs

    typedef bool                                           data_type;

    typedef sc_signal_in_if<data_type>                     if_type;
    typedef sc_port<if_type,1,SC_ONE_OR_MORE_BOUND>        base_type;
    typedef sc_in<data_type>                               this_type;
    typedef /* typename */ base_type::port_type            base_port_type;

    typedef if_type                                        in_if_type;
    typedef base_type                                      in_port_type;
    typedef sc_signal_inout_if<data_type>                  inout_if_type;
    typedef sc_port<inout_if_type,1,SC_ONE_OR_MORE_BOUND>  inout_port_type;

public:

    // constructors

    sc_in()
        : base_type(), m_traces( 0 ), m_change_finder_p(0), 
          m_neg_finder_p(0), m_pos_finder_p(0)
        {}

    explicit sc_in( const char* name_ )
        : base_type( name_ ), m_traces( 0 ), m_change_finder_p(0), 
          m_neg_finder_p(0), m_pos_finder_p(0)
        {}

    explicit sc_in( const in_if_type& interface_ )
        : base_type( CCAST<in_if_type&>( interface_ ) ), m_traces( 0 ), 
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        {}

    sc_in( const char* name_, const in_if_type& interface_ )
        : base_type( name_, CCAST<in_if_type&>( interface_ ) ), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        {}

    explicit sc_in( in_port_type& parent_ )
        : base_type( parent_ ), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        {}

    sc_in( const char* name_, in_port_type& parent_ )
        : base_type( name_, parent_ ), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        {}

    explicit sc_in( inout_port_type& parent_ )
        : base_type(), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        { sc_port_base::bind( parent_ ); }

    sc_in( const char* name_, inout_port_type& parent_ )
        : base_type( name_ ), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        { sc_port_base::bind( parent_ ); }

    sc_in( this_type& parent_ )
        : base_type( parent_ ), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        {}

#if defined(TESTING)
    sc_in( const this_type& parent_ )
        : base_type( *(in_if_type*)parent_.get_interface() ) , m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        {}
#endif 

    sc_in( const char* name_, this_type& parent_ )
        : base_type( name_, parent_ ), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        {}


    // destructor

    virtual ~sc_in()
        {
            remove_traces();
            delete m_change_finder_p;
            delete m_neg_finder_p;
            delete m_pos_finder_p;
        }


    // bind to in interface

    SC_VIRTUAL_ void bind( const in_if_type& interface_ )
        { sc_port_base::bind( CCAST<in_if_type&>( interface_ ) ); }

    SC_VIRTUAL_ void bind( in_if_type& interface_ )
        { this->bind( CCAST<const in_if_type&>( interface_ ) ); }

    void operator () ( const in_if_type& interface_ )
        { this->bind( interface_ ); }


    // bind to parent in port

    SC_VIRTUAL_ void bind( in_port_type& parent_ )
        { sc_port_base::bind( parent_ ); }

    void operator () ( in_port_type& parent_ )
        { this->bind( parent_ ); }


    // bind to parent inout port

    SC_VIRTUAL_ void bind( inout_port_type& parent_ )
        { sc_port_base::bind( parent_ ); }

    void operator () ( inout_port_type& parent_ )
        { this->bind( parent_ ); }


    // interface access shortcut methods

    // get the default event

    const sc_event& default_event() const
        { return (*this)->default_event(); }


    // get the value changed event

    const sc_event& value_changed_event() const
        { return (*this)->value_changed_event(); }

    // get the positive edge event

    const sc_event& posedge_event() const
        { return (*this)->posedge_event(); }

    // get the negative edge event

    const sc_event& negedge_event() const
        { return (*this)->negedge_event(); }


    // read the current value

    const data_type& read() const
        { return (*this)->read(); }

    operator const data_type& () const
        { return (*this)->read(); }


    // use for positive edge sensitivity

    sc_event_finder& pos() const
    {
        if ( !m_pos_finder_p )
        {
            m_pos_finder_p = new sc_event_finder_t<in_if_type>(
                *this, &in_if_type::posedge_event );
        } 
        return *m_pos_finder_p;
    }

    // use for negative edge sensitivity

    sc_event_finder& neg() const
    {
        if ( !m_neg_finder_p )
        {
            m_neg_finder_p = new sc_event_finder_t<in_if_type>(
                *this, &in_if_type::negedge_event );
        } 
        return *m_neg_finder_p;
    }


    // was there a value changed event?

    bool event() const
        { return (*this)->event(); }

    // was there a positive edge event?

    bool posedge() const
        { return (*this)->posedge(); }

    // was there a negative edge event?

    bool negedge() const
        { return (*this)->negedge(); }

    // (other) event finder method(s)

    sc_event_finder& value_changed() const
    {
        if ( !m_change_finder_p )
        {
            m_change_finder_p = new sc_event_finder_t<in_if_type>(
                *this, &in_if_type::value_changed_event );
        }
        return *m_change_finder_p;
    }


    // called when elaboration is done
    /*  WHEN DEFINING THIS METHOD IN A DERIVED CLASS, */
    /*  MAKE SURE THAT THIS METHOD IS CALLED AS WELL. */

    virtual void end_of_elaboration();

    virtual const char* kind() const
        { return "sc_in"; }


    void add_trace( sc_trace_file*, const std::string& ) const;

    // called by sc_trace
    void add_trace_internal( sc_trace_file*, const std::string& ) const;

protected:

    void remove_traces() const;

    mutable sc_trace_params_vec* m_traces;

protected:

    // called by pbind (for internal use only)
    virtual int vbind( sc_interface& );
    virtual int vbind( sc_port_base& );

    // implement virtual base_type port-binding function
    //  - avoids warnings on some compilers
    //  - should only be called, when using sc_port_b explicitly
    //  - errors are detected during elaboration

    SC_VIRTUAL_ void bind( base_port_type& parent_ )
        { sc_port_base::bind( parent_ ); }

private:
  mutable sc_event_finder* m_change_finder_p;
  mutable sc_event_finder* m_neg_finder_p;
  mutable sc_event_finder* m_pos_finder_p;

private:

    // disabled
#if defined(TESTING)
#else
    sc_in( const this_type& );
#endif 
    this_type& operator = ( const this_type& );

#ifdef __GNUC__
    // Needed to circumvent a problem in the g++-2.95.2 compiler:
    // This unused variable forces the compiler to instantiate
    // an object of T template so an implicit conversion from
    // read() to a C++ intrinsic data type will work.
    static data_type dummy;
#endif
};


// ----------------------------------------------------------------------------
//  CLASS : sc_in<sc_dt::sc_logic>
//
//  Specialization of sc_in<T> for type sc_dt::sc_logic.
// ----------------------------------------------------------------------------

template <>
class sc_in<sc_dt::sc_logic>
: public sc_port<sc_signal_in_if<sc_dt::sc_logic>,1,SC_ONE_OR_MORE_BOUND>
{
public:

    // typedefs

    typedef sc_dt::sc_logic                               data_type;

    typedef sc_signal_in_if<data_type>                    if_type;
    typedef sc_port<if_type,1,SC_ONE_OR_MORE_BOUND>       base_type;
    typedef sc_in<data_type>                              this_type;
    typedef /* typename */ base_type::port_type           base_port_type;

    typedef if_type                                       in_if_type;
    typedef base_type                                     in_port_type;
    typedef sc_signal_inout_if<data_type>                 inout_if_type;
    typedef sc_port<inout_if_type,1,SC_ONE_OR_MORE_BOUND> inout_port_type;

public:

    // constructors

    sc_in()
        : base_type(), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        {}

    explicit sc_in( const char* name_ )
        : base_type( name_ ), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        {}

    explicit sc_in( const in_if_type& interface_ )
        : base_type( CCAST<in_if_type&>( interface_ ) ), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        {}

    sc_in( const char* name_, const in_if_type& interface_ )
        : base_type( name_, CCAST<in_if_type&>( interface_ ) ), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        {}

    explicit sc_in( in_port_type& parent_ )
        : base_type( parent_ ), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        {}

    sc_in( const char* name_, in_port_type& parent_ )
        : base_type( name_, parent_ ), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        {}

    explicit sc_in( inout_port_type& parent_ )
        : base_type(), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        { sc_port_base::bind( parent_ ); }

    sc_in( const char* name_, inout_port_type& parent_ )
        : base_type( name_ ), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        { sc_port_base::bind( parent_ ); }

    sc_in( this_type& parent_ )
        : base_type( parent_ ), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        {}

    sc_in( const char* name_, this_type& parent_ )
        : base_type( name_, parent_ ), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        {}


    // destructor

    virtual ~sc_in()
        {
            remove_traces();
            delete m_change_finder_p;
            delete m_neg_finder_p;
            delete m_pos_finder_p;
        }


    // bind to in interface

    SC_VIRTUAL_ void bind( const in_if_type& interface_ )
        { sc_port_base::bind( CCAST<in_if_type&>( interface_ ) ); }

    SC_VIRTUAL_ void bind( in_if_type& interface_ )
        { this->bind( CCAST<const in_if_type&>( interface_ ) ); }

    void operator () ( const in_if_type& interface_ )
        { this->bind( interface_ ); }


    // bind to parent in port

    SC_VIRTUAL_ void bind( in_port_type& parent_ )
        { sc_port_base::bind( parent_ ); }

    void operator () ( in_port_type& parent_ )
        { this->bind( parent_ ); }


    // bind to parent inout port

    SC_VIRTUAL_ void bind( inout_port_type& parent_ )
        { sc_port_base::bind( parent_ ); }

    void operator () ( inout_port_type& parent_ )
        { this->bind( parent_ ); }


    // interface access shortcut methods

    // get the default event

    const sc_event& default_event() const
        { return (*this)->default_event(); }


    // get the value changed event

    const sc_event& value_changed_event() const
        { return (*this)->value_changed_event(); }

    // get the positive edge event

    const sc_event& posedge_event() const
        { return (*this)->posedge_event(); }

    // get the negative edge event

    const sc_event& negedge_event() const
        { return (*this)->negedge_event(); }


    // read the current value

    const data_type& read() const
        { return (*this)->read(); }

    operator const data_type& () const
        { return (*this)->read(); }


    // use for positive edge sensitivity

    sc_event_finder& pos() const
    {
        if ( !m_pos_finder_p )
        {
            m_pos_finder_p = new sc_event_finder_t<in_if_type>(
                *this, &in_if_type::posedge_event );
        } 
        return *m_pos_finder_p;
    }

    // use for negative edge sensitivity

    sc_event_finder& neg() const
    {
        if ( !m_neg_finder_p )
        {
            m_neg_finder_p = new sc_event_finder_t<in_if_type>(
                *this, &in_if_type::negedge_event );
        } 
        return *m_neg_finder_p;
    }


    // was there a value changed event?

    bool event() const
        { return (*this)->event(); }

    // was there a positive edge event?

    bool posedge() const
        { return (*this)->posedge(); }

    // was there a negative edge event?

    bool negedge() const
        { return (*this)->negedge(); }

    // (other) event finder method(s)

    sc_event_finder& value_changed() const
    {
        if ( !m_change_finder_p )
        {
            m_change_finder_p = new sc_event_finder_t<in_if_type>(
                *this, &in_if_type::value_changed_event );
        }
        return *m_change_finder_p;
    }


    // called when elaboration is done
    /*  WHEN DEFINING THIS METHOD IN A DERIVED CLASS, */
    /*  MAKE SURE THAT THIS METHOD IS CALLED AS WELL. */

    virtual void end_of_elaboration();

    virtual const char* kind() const
        { return "sc_in"; }


    void add_trace( sc_trace_file*, const std::string& ) const;

    // called by sc_trace
    void add_trace_internal( sc_trace_file*, const std::string& ) const;

protected:

    void remove_traces() const;

    mutable sc_trace_params_vec* m_traces;

protected:

    // called by pbind (for internal use only)
    virtual int vbind( sc_interface& );
    virtual int vbind( sc_port_base& );

    // implement virtual base_type port-binding function
    //  - avoids warnings on some compilers
    //  - should only be called, when using sc_port_b explicitly
    //  - errors are detected during elaboration

    SC_VIRTUAL_ void bind( base_port_type& parent_ )
        { sc_port_base::bind( parent_ ); }

private:
  mutable sc_event_finder* m_change_finder_p;
  mutable sc_event_finder* m_neg_finder_p;
  mutable sc_event_finder* m_pos_finder_p;

private:

    // disabled
    sc_in( const this_type& );
    this_type& operator = ( const this_type& );

#ifdef __GNUC__
    // Needed to circumvent a problem in the g++-2.95.2 compiler:
    // This unused variable forces the compiler to instantiate
    // an object of T template so an implicit conversion from
    // read() to a C++ intrinsic data type will work.
    static data_type dummy;
#endif
};


// ----------------------------------------------------------------------------
//  CLASS : sc_inout<T>
//
//  The sc_signal<T> input/output port class.
// ----------------------------------------------------------------------------

template <class T>
class sc_inout
: public sc_port<sc_signal_inout_if<T>,1,SC_ONE_OR_MORE_BOUND>
{
public:

    // typedefs

    typedef T                                          data_type;

    typedef sc_signal_inout_if<data_type>              if_type;
    typedef sc_port<if_type,1,SC_ONE_OR_MORE_BOUND>    base_type;
    typedef sc_inout<data_type>                        this_type;

    typedef sc_signal_in_if<data_type>                 in_if_type;
    typedef sc_port<in_if_type,1,SC_ONE_OR_MORE_BOUND> in_port_type;
    typedef if_type                                    inout_if_type;
    typedef base_type                                  inout_port_type;

public:

    // constructors

    sc_inout()
        : base_type(), m_init_val( 0 ), m_traces( 0 ),
          m_change_finder_p(0)
        {}

    explicit sc_inout( const char* name_ )
        : base_type( name_ ), m_init_val( 0 ), m_traces( 0 ),
          m_change_finder_p(0)
        {}

    explicit sc_inout( inout_if_type& interface_ )
        : base_type( interface_ ), m_init_val( 0 ), m_traces( 0 ),
          m_change_finder_p(0)
        {}

    sc_inout( const char* name_, inout_if_type& interface_ )
        : base_type( name_, interface_ ), m_init_val( 0 ), m_traces( 0 ),
          m_change_finder_p(0)
        {}

    explicit sc_inout( inout_port_type& parent_ )
        : base_type( parent_ ), m_init_val( 0 ), m_traces( 0 ),
          m_change_finder_p(0)
        {}

    sc_inout( const char* name_, inout_port_type& parent_ )
        : base_type( name_, parent_ ), m_init_val( 0 ), m_traces( 0 ),
          m_change_finder_p(0)
        {}

    sc_inout( this_type& parent_ )
        : base_type( parent_ ), m_init_val( 0 ), m_traces( 0 ),
          m_change_finder_p(0)
        {}

    sc_inout( const char* name_, this_type& parent_ )
        : base_type( name_, parent_ ), m_init_val( 0 ), m_traces( 0 ),
          m_change_finder_p(0)
        {}


    // destructor

    virtual ~sc_inout();


    // interface access shortcut methods

    // get the default event

    const sc_event& default_event() const
        { return (*this)->default_event(); }


    // get the value changed event

    const sc_event& value_changed_event() const
        { return (*this)->value_changed_event(); }


    // read the current value

    const data_type& read() const
        { return (*this)->read(); }

    operator const data_type& () const
        { return (*this)->read(); }


    // was there a value changed event?

    bool event() const
        { return (*this)->event(); }


    // write the new value

    void write( const data_type& value_ )
        { (*this)->write( value_ ); }

    this_type& operator = ( const data_type& value_ )
        { (*this)->write( value_ ); return *this; }

    this_type& operator = ( const in_if_type& interface_ )
        { (*this)->write( interface_.read() ); return *this; }

    this_type& operator = ( const in_port_type& port_ )
        { (*this)->write( port_->read() ); return *this; }

    this_type& operator = ( const inout_port_type& port_ )
        { (*this)->write( port_->read() ); return *this; }

    this_type& operator = ( const this_type& port_ )
        { (*this)->write( port_->read() ); return *this; }


    // set initial value (can also be called when port is not bound yet)

    void initialize( const data_type& value_ );

    void initialize( const in_if_type& interface_ )
        { initialize( interface_.read() ); }


    // called when elaboration is done
    /*  WHEN DEFINING THIS METHOD IN A DERIVED CLASS, */
    /*  MAKE SURE THAT THIS METHOD IS CALLED AS WELL. */

    virtual void end_of_elaboration();


    // (other) event finder method(s)

    sc_event_finder& value_changed() const
    {
        if ( !m_change_finder_p )
        {
            m_change_finder_p = new sc_event_finder_t<in_if_type>(
                *this, &in_if_type::value_changed_event );
        }
        return *m_change_finder_p;
    }

    virtual const char* kind() const
        { return "sc_inout"; }

protected:

    data_type* m_init_val;

public:

    // called by sc_trace
    void add_trace_internal( sc_trace_file*, const std::string& ) const;

    void add_trace( sc_trace_file*, const std::string& ) const;

protected:

    void remove_traces() const;

    mutable sc_trace_params_vec* m_traces;

private:
  mutable sc_event_finder* m_change_finder_p;

private:

    // disabled
    sc_inout( const this_type& );

#ifdef __GNUC__
    // Needed to circumvent a problem in the g++-2.95.2 compiler:
    // This unused variable forces the compiler to instantiate
    // an object of T template so an implicit conversion from
    // read() to a C++ intrinsic data type will work.
    static data_type dummy;
#endif
};

template<typename T>
::std::ostream& operator << ( ::std::ostream& os, const sc_inout<T>& a )
{
    return os << a->read();
}

// IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII


// destructor

template <class T>
inline
sc_inout<T>::~sc_inout()
{
    delete m_change_finder_p;
    delete m_init_val;
    remove_traces();
}


// set initial value (can also be called when port is not bound yet)

template <class T>
inline
void
sc_inout<T>::initialize( const data_type& value_ )
{
    inout_if_type* iface = DCAST<inout_if_type*>( this->get_interface() );
    if( iface != 0 ) {
        iface->write( value_ );
    } else {
        if( m_init_val == 0 ) {
            m_init_val = new data_type;
        }
        *m_init_val = value_;
    }
}


// called when elaboration is done

template <class T>
inline
void
sc_inout<T>::end_of_elaboration()
{
    if( m_init_val != 0 ) {
        write( *m_init_val );
        delete m_init_val;
        m_init_val = 0;
    }
    if( m_traces != 0 ) {
        for( int i = 0; i < (int)m_traces->size(); ++ i ) {
            sc_trace_params* p = (*m_traces)[i];
            in_if_type* iface = DCAST<in_if_type*>( this->get_interface() );
            sc_trace( p->tf, iface->read(), p->name );
        }
        remove_traces();
    }
}


// called by sc_trace

template <class T>
inline
void
sc_inout<T>::add_trace_internal( sc_trace_file* tf_, const std::string& name_) 
const
{
    if( tf_ != 0 ) {
            if( m_traces == 0 ) {
                m_traces = new sc_trace_params_vec;
            }
            m_traces->push_back( new sc_trace_params( tf_, name_ ) );
    }
}

template <class T>
inline
void
sc_inout<T>::add_trace( sc_trace_file* tf_, const std::string& name_) const
{
    sc_deprecated_add_trace();
    add_trace_internal(tf_, name_);
}

template <class T>
inline
void
sc_inout<T>::remove_traces() const
{
    if( m_traces != 0 ) {
                for( int i = m_traces->size() - 1; i >= 0; -- i ) {
                delete (*m_traces)[i];
                }
                delete m_traces;
                m_traces = 0;
    }
}


// ----------------------------------------------------------------------------
//  CLASS : sc_inout<bool>
//
//  Specialization of sc_inout<T> for type bool.
// ----------------------------------------------------------------------------

template <>
class sc_inout<bool> : 
    public sc_port<sc_signal_inout_if<bool>,1,SC_ONE_OR_MORE_BOUND>
{
public:

    // typedefs

    typedef bool                                       data_type;

    typedef sc_signal_inout_if<data_type>              if_type;
    typedef sc_port<if_type,1,SC_ONE_OR_MORE_BOUND>    base_type;
    typedef sc_inout<data_type>                        this_type;

    typedef sc_signal_in_if<data_type>                 in_if_type;
    typedef sc_port<in_if_type,1,SC_ONE_OR_MORE_BOUND> in_port_type;
    typedef if_type                                    inout_if_type;
    typedef base_type                                  inout_port_type;

public:

    // constructors

    sc_inout()
        : base_type(), m_init_val( 0 ), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        {}

    explicit sc_inout( const char* name_ )
        : base_type( name_ ), m_init_val( 0 ), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        {}

    explicit sc_inout( inout_if_type& interface_ )
        : base_type( interface_ ), m_init_val( 0 ), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        {}

    sc_inout( const char* name_, inout_if_type& interface_ )
        : base_type( name_, interface_ ), m_init_val( 0 ), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        {}

    explicit sc_inout( inout_port_type& parent_ )
        : base_type( parent_ ), m_init_val( 0 ), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        {}

    sc_inout( const char* name_, inout_port_type& parent_ )
        : base_type( name_, parent_ ), m_init_val( 0 ), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        {}

    sc_inout( this_type& parent_ )
        : base_type( parent_ ), m_init_val( 0 ), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        {}

    sc_inout( const char* name_, this_type& parent_ )
        : base_type( name_, parent_ ), m_init_val( 0 ), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        {}


    // destructor

    virtual ~sc_inout();


    // interface access shortcut methods

    // get the default event

    const sc_event& default_event() const
        { return (*this)->default_event(); }


    // get the value changed event

    const sc_event& value_changed_event() const
        { return (*this)->value_changed_event(); }

    // get the positive edge event

    const sc_event& posedge_event() const
        { return (*this)->posedge_event(); }

    // get the negative edge event

    const sc_event& negedge_event() const
        { return (*this)->negedge_event(); }


    // read the current value

    const data_type& read() const
        { return (*this)->read(); }

    operator const data_type& () const
        { return (*this)->read(); }


    // use for positive edge sensitivity

    sc_event_finder& pos() const
    {
        if ( !m_pos_finder_p )
        {
            m_pos_finder_p = new sc_event_finder_t<in_if_type>(
                *this, &in_if_type::posedge_event );
        } 
        return *m_pos_finder_p;
    }

    // use for negative edge sensitivity

    sc_event_finder& neg() const
    {
        if ( !m_neg_finder_p )
        {
            m_neg_finder_p = new sc_event_finder_t<in_if_type>(
                *this, &in_if_type::negedge_event );
        } 
        return *m_neg_finder_p;
    }


    // was there a value changed event?

    bool event() const
        { return (*this)->event(); }

    // was there a positive edge event?

    bool posedge() const
        { return (*this)->posedge(); }

    // was there a negative edge event?

    bool negedge() const
        { return (*this)->negedge(); }

    // write the new value

    void write( const data_type& value_ )
        { (*this)->write( value_ ); }

    this_type& operator = ( const data_type& value_ )
        { (*this)->write( value_ ); return *this; }

    this_type& operator = ( const in_if_type& interface_ )
        { (*this)->write( interface_.read() ); return *this; }

    this_type& operator = ( const in_port_type& port_ )
        { (*this)->write( port_->read() ); return *this; }

    this_type& operator = ( const inout_port_type& port_ )
        { (*this)->write( port_->read() ); return *this; }

    this_type& operator = ( const this_type& port_ )
        { (*this)->write( port_->read() ); return *this; }


    // set initial value (can also be called when port is not bound yet)

    void initialize( const data_type& value_ );

    void initialize( const in_if_type& interface_ )
        { initialize( interface_.read() ); }


    // called when elaboration is done
    /*  WHEN DEFINING THIS METHOD IN A DERIVED CLASS, */
    /*  MAKE SURE THAT THIS METHOD IS CALLED AS WELL. */

    virtual void end_of_elaboration();


    // (other) event finder method(s)

    sc_event_finder& value_changed() const
    {
        if ( !m_change_finder_p )
        {
            m_change_finder_p = new sc_event_finder_t<in_if_type>(
                *this, &in_if_type::value_changed_event );
        }
        return *m_change_finder_p;
    }

    virtual const char* kind() const
        { return "sc_inout"; }

protected:

    data_type* m_init_val;

public:

    // called by sc_trace
    void add_trace_internal( sc_trace_file*, const std::string& ) const;

    void add_trace( sc_trace_file*, const std::string& ) const;

protected:

    void remove_traces() const;

    mutable sc_trace_params_vec* m_traces;

private:
  mutable sc_event_finder* m_change_finder_p;
  mutable sc_event_finder* m_neg_finder_p;
  mutable sc_event_finder* m_pos_finder_p;

private:

    // disabled
    sc_inout( const this_type& );

#ifdef __GNUC__
    // Needed to circumvent a problem in the g++-2.95.2 compiler:
    // This unused variable forces the compiler to instantiate
    // an object of T template so an implicit conversion from
    // read() to a C++ intrinsic data type will work.
    static data_type dummy;
#endif
};


// ----------------------------------------------------------------------------
//  CLASS : sc_inout<sc_dt::sc_logic>
//
//  Specialization of sc_inout<T> for type sc_dt::sc_logic.
// ----------------------------------------------------------------------------

template <>
class sc_inout<sc_dt::sc_logic>
: public sc_port<sc_signal_inout_if<sc_dt::sc_logic>,1,SC_ONE_OR_MORE_BOUND>
{
public:

    // typedefs

    typedef sc_dt::sc_logic                            data_type;

    typedef sc_signal_inout_if<data_type>              if_type;
    typedef sc_port<if_type,1,SC_ONE_OR_MORE_BOUND>    base_type;
    typedef sc_inout<data_type>                        this_type;

    typedef sc_signal_in_if<data_type>                 in_if_type;
    typedef sc_port<in_if_type,1,SC_ONE_OR_MORE_BOUND> in_port_type;
    typedef if_type                                    inout_if_type;
    typedef base_type                                  inout_port_type;

public:

    // constructors

    sc_inout()
        : base_type(), m_init_val( 0 ), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        {}

    explicit sc_inout( const char* name_ )
        : base_type( name_ ), m_init_val( 0 ), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        {}

    explicit sc_inout( inout_if_type& interface_ )
        : base_type( interface_ ), m_init_val( 0 ), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        {}

    sc_inout( const char* name_, inout_if_type& interface_ )
        : base_type( name_, interface_ ), m_init_val( 0 ), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        {}

    explicit sc_inout( inout_port_type& parent_ )
        : base_type( parent_ ), m_init_val( 0 ), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        {}

    sc_inout( const char* name_, inout_port_type& parent_ )
        : base_type( name_, parent_ ), m_init_val( 0 ), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        {}

    sc_inout( this_type& parent_ )
        : base_type( parent_ ), m_init_val( 0 ), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        {}

    sc_inout( const char* name_, this_type& parent_ )
        : base_type( name_, parent_ ), m_init_val( 0 ), m_traces( 0 ),
          m_change_finder_p(0), m_neg_finder_p(0), m_pos_finder_p(0)
        {}


    // destructor

    virtual ~sc_inout();


    // interface access shortcut methods

    // get the default event

    const sc_event& default_event() const
        { return (*this)->default_event(); }


    // get the value changed event

    const sc_event& value_changed_event() const
        { return (*this)->value_changed_event(); }

    // get the positive edge event

    const sc_event& posedge_event() const
        { return (*this)->posedge_event(); }

    // get the negative edge event

    const sc_event& negedge_event() const
        { return (*this)->negedge_event(); }


    // read the current value

    const data_type& read() const
        { return (*this)->read(); }

    operator const data_type& () const
        { return (*this)->read(); }


    // use for positive edge sensitivity

    sc_event_finder& pos() const
    {
        if ( !m_pos_finder_p )
        {
            m_pos_finder_p = new sc_event_finder_t<in_if_type>(
                *this, &in_if_type::posedge_event );
        } 
        return *m_pos_finder_p;
    }

    // use for negative edge sensitivity

    sc_event_finder& neg() const
    {
        if ( !m_neg_finder_p )
        {
            m_neg_finder_p = new sc_event_finder_t<in_if_type>(
                *this, &in_if_type::negedge_event );
        } 
        return *m_neg_finder_p;
    }


    // was there a value changed event?

    bool event() const
        { return (*this)->event(); }

    // was there a positive edge event?

    bool posedge() const
        { return (*this)->posedge(); }

    // was there a negative edge event?

    bool negedge() const
        { return (*this)->negedge(); }

    // write the new value

    void write( const data_type& value_ )
        { (*this)->write( value_ ); }

    this_type& operator = ( const data_type& value_ )
        { (*this)->write( value_ ); return *this; }

    this_type& operator = ( const in_if_type& interface_ )
        { (*this)->write( interface_.read() ); return *this; }

    this_type& operator = ( const in_port_type& port_ )
        { (*this)->write( port_->read() ); return *this; }

    this_type& operator = ( const inout_port_type& port_ )
        { (*this)->write( port_->read() ); return *this; }

    this_type& operator = ( const this_type& port_ )
        { (*this)->write( port_->read() ); return *this; }


    // set initial value (can also be called when port is not bound yet)

    void initialize( const data_type& value_ );

    void initialize( const in_if_type& interface_ )
        { initialize( interface_.read() ); }


    // called when elaboration is done
    /*  WHEN DEFINING THIS METHOD IN A DERIVED CLASS, */
    /*  MAKE SURE THAT THIS METHOD IS CALLED AS WELL. */

    virtual void end_of_elaboration();


    // (other) event finder method(s)

    sc_event_finder& value_changed() const
    {
        if ( !m_change_finder_p )
        {
            m_change_finder_p = new sc_event_finder_t<in_if_type>(
                *this, &in_if_type::value_changed_event );
        }
        return *m_change_finder_p;
    }

    virtual const char* kind() const
        { return "sc_inout"; }

protected:

    data_type* m_init_val;

public:

    // called by sc_trace
    void add_trace_internal( sc_trace_file*, const std::string& ) const;

    void add_trace( sc_trace_file*, const std::string& ) const;

protected:

    void remove_traces() const;

    mutable sc_trace_params_vec* m_traces;

private:
  mutable sc_event_finder* m_change_finder_p;
  mutable sc_event_finder* m_neg_finder_p;
  mutable sc_event_finder* m_pos_finder_p;

private:

    // disabled
    sc_inout( const this_type& );

#ifdef __GNUC__
    // Needed to circumvent a problem in the g++-2.95.2 compiler:
    // This unused variable forces the compiler to instantiate
    // an object of T template so an implicit conversion from
    // read() to a C++ intrinsic data type will work.
    static data_type dummy;
#endif
};


// ----------------------------------------------------------------------------
//  CLASS : sc_out<T>
//
//  The sc_signal<T> output port class.
// ----------------------------------------------------------------------------

// sc_out can also read from its port, hence no difference with sc_inout.
// For debugging reasons, a class is provided instead of a define.

template <class T>
class sc_out
: public sc_inout<T>
{
public:

    // typedefs

    typedef T                                   data_type;

    typedef sc_out<data_type>                   this_type;
    typedef sc_inout<data_type>                 base_type;

    typedef typename base_type::in_if_type      in_if_type;
    typedef typename base_type::in_port_type    in_port_type;
    typedef typename base_type::inout_if_type   inout_if_type;
    typedef typename base_type::inout_port_type inout_port_type;

public:

    // constructors

    sc_out()
        : base_type()
        {}

    explicit sc_out( const char* name_ )
        : base_type( name_ )
        {}

    explicit sc_out( inout_if_type& interface_ )
        : base_type( interface_ )
        {}

    sc_out( const char* name_, inout_if_type& interface_ )
        : base_type( name_, interface_ )
        {}

    explicit sc_out( inout_port_type& parent_ )
        : base_type( parent_ )
        {}

    sc_out( const char* name_, inout_port_type& parent_ )
        : base_type( name_, parent_ )
        {}

    sc_out( this_type& parent_ )
        : base_type( parent_ )
        {}

    sc_out( const char* name_, this_type& parent_ )
        : base_type( name_, parent_ )
        {}


    // destructor (does nothing)

    virtual ~sc_out()
        {}


    // write the new value

    this_type& operator = ( const data_type& value_ )
        { (*this)->write( value_ ); return *this; }

    this_type& operator = ( const in_if_type& interface_ )
        { (*this)->write( interface_.read() ); return *this; }

    this_type& operator = ( const in_port_type& port_ )
        { (*this)->write( port_->read() ); return *this; }

    this_type& operator = ( const inout_port_type& port_ )
        { (*this)->write( port_->read() ); return *this; }

    this_type& operator = ( const this_type& port_ )
        { (*this)->write( port_->read() ); return *this; }

    virtual const char* kind() const
        { return "sc_out"; }

private:

    // disabled
    sc_out( const this_type& );
};


// IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII


// ----------------------------------------------------------------------------
//  FUNCTION : sc_trace
// ----------------------------------------------------------------------------

template <class T>
inline
void
sc_trace(sc_trace_file* tf, const sc_in<T>& port, const std::string& name)
{
    const sc_signal_in_if<T>* iface = 0;
    if (sc_get_curr_simcontext()->elaboration_done() )
    {
        iface = DCAST<const sc_signal_in_if<T>*>( port.get_interface() );
    }

    if ( iface )
        sc_trace( tf, iface->read(), name );
    else
        port.add_trace_internal( tf, name );
}

template <class T>
inline
void
sc_trace( sc_trace_file* tf, const sc_inout<T>& port, 
    const std::string& name )
{
    const sc_signal_in_if<T>* iface = 0;
    if (sc_get_curr_simcontext()->elaboration_done() )
    {
        iface =DCAST<const sc_signal_in_if<T>*>( port.get_interface() );
    }

    if ( iface )
        sc_trace( tf, iface->read(), name );
    else
        port.add_trace_internal( tf, name );
}

} // namespace sc_core

#undef SC_VIRTUAL_

/*****************************************************************************

  MODIFICATION LOG - modifiers, enter your name, affiliation, date and
  changes you are making here.

      Name, Affiliation, Date:  Jason Elbaum, Motorola, Inc., 2001-11-12
  Description of Modification:  Added a static, private, otherwise
                                unused data member to the sc_in
                                and sc_inout classes to address
                                a bug in the GNU compiler *only*.
                                This works around a bug in g++ 2.95.2
                                regarding implicit casting from a
                                templated class to a C++ intrinsic type.

 *****************************************************************************/
//$Log: sc_signal_ports.h,v $
//Revision 1.10  2011/08/29 18:04:32  acg
// Philipp A. Hartmann: miscellaneous clean ups.
//
//Revision 1.9  2011/08/26 20:45:43  acg
// Andy Goodrich: moved the modification log to the end of the file to
// eliminate source line number skew when check-ins are done.
//
//Revision 1.8  2011/08/07 19:08:01  acg
// Andy Goodrich: moved logs to end of file so line number synching works
// better between versions.
//
//Revision 1.7  2011/08/07 18:53:09  acg
// Philipp A. Hartmann: add virtual instances of the bind function for
// base classes to eliminate warning messages for clang platforms.
//
//Revision 1.6  2011/04/02 00:03:23  acg
// Andy Goodrich: catch the other bind()'s that I missed in Philipp's update.
//
//Revision 1.5  2011/04/01 22:33:31  acg
// Philipp A. Harmann: Use const interface signature to implement non-const
// interface signature for virtual bind(...).
//
//Revision 1.4  2011/03/30 16:46:10  acg
// Andy Goodrich: added a signature and removed a virtual specification
// to eliminate warnings with certain compilers.
//
//Revision 1.3  2011/02/18 20:23:45  acg
// Andy Goodrich: Copyright update.
//
//Revision 1.2  2011/01/20 16:52:15  acg
// Andy Goodrich: changes for IEEE 1666 2011.
//
//Revision 1.1.1.1  2006/12/15 20:20:04  acg
//SystemC 2.3
//
//Revision 1.11  2006/04/18 23:36:50  acg
// Andy Goodrich: made add_trace_internal public until I can figure out
// how to do a friend specification for sc_trace in an environment where
// there are partial template and full template specifications for its
// arguments.
//
//Revision 1.10  2006/04/18 18:01:26  acg
// Andy Goodrich: added an add_trace_internal() method to the various port
// classes so that sc_trace has something to call that won't emit an
// IEEE 1666 deprecation message.
//
//Revision 1.9  2006/03/13 20:19:44  acg
// Andy Goodrich: changed sc_event instances into pointers to sc_event instances
// that are allocated as needed. This saves considerable storage for large
// numbers of signals, etc.
//
//Revision 1.8  2006/02/02 23:42:37  acg
// Andy Goodrich: implemented a much better fix to the sc_event_finder
// proliferation problem. This new version allocates only a single event
// finder for each port for each type of event, e.g., pos(), neg(), and
// value_change(). The event finder persists as long as the port does,
// which is what the LRM dictates. Because only a single instance is
// allocated for each event type per port there is not a potential
// explosion of storage as was true in the 2.0.1/2.1 versions.
//
//Revision 1.7  2006/02/02 21:38:12  acg
// Andy Goodrich: fix to the comment log.
//
//Revision 1.4  2006/01/24 20:46:32  acg
//Andy Goodrich: changes to eliminate use of deprecated features. For instance,
//using notify(SC_ZERO_TIME) in place of notify_delayed().
//
//Revision 1.3  2006/01/13 18:47:42  acg
//Added $Log command so that CVS comments are reproduced in the source.
//
//Revision 1.2  2006/01/03 23:18:26  acg
//Changed copyright to include 2006.
//
//Revision 1.1.1.1  2005/12/19 23:16:43  acg
//First check in of SystemC 2.1 into its own archive.
//
//Revision 1.18  2005/09/15 23:01:52  acg
//Added std:: prefix to appropriate methods and types to get around
//issues with the Edison Front End.
//
//Revision 1.17  2005/06/10 22:43:55  acg
//Added CVS change log annotation.
//

#endif

// Taf!