sc_sensitive.cpp

system C源码 一种替代verilog的语言

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

  The following code is derived, directly or indirectly, from the SystemC
  source code Copyright (c) 1996-2006 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 Version 2.4 (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.systemc.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
  language governing rights and limitations under the License.

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

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

  sc_sensitive.cpp --

  Original Author: Stan Y. Liao, Synopsys, Inc.
                   Martin Janssen, Synopsys, Inc.

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

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

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

      Name, Affiliation, Date: Bishnupriya Bhattacharya, Cadence Design Systems,
                               25 August, 2003
  Description of Modification: add make_static_sensitivity() routines to support
                               dynamic method process creation with static
                               sensitivity

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


// $Log: sc_sensitive.cpp,v $
// Revision 1.1.1.1  2006/12/15 20:31:37  acg
// SystemC 2.2
//
// Revision 1.8  2006/04/11 23:13:21  acg
//   Andy Goodrich: Changes for reduced reset support that only includes
//   sc_cthread, but has preliminary hooks for expanding to method and thread
//   processes also.
//
// Revision 1.7  2006/01/27 17:31:24  acg
//  Andy Goodrich: removed debugging comments from << operator code for types
//  that are deprecated.
//
// Revision 1.6  2006/01/26 21:04:54  acg
//  Andy Goodrich: deprecation message changes and additional messages.
//
// Revision 1.5  2006/01/25 00:31:19  acg
//  Andy Goodrich: Changed over to use a standard message id of
//  SC_ID_IEEE_1666_DEPRECATION for all deprecation messages.
//
// Revision 1.4  2006/01/24 20:49:05  acg
// Andy Goodrich: changes to remove the use of deprecated features within the
// simulator, and to issue warning messages when deprecated features are used.
//
// Revision 1.3  2006/01/13 18:44:30  acg
// Added $Log to record CVS changes into the source.
//

#include "sysc/kernel/sc_event.h"
#include "sysc/kernel/sc_kernel_ids.h"
#include "sysc/kernel/sc_module.h"
#include "sysc/kernel/sc_cthread_process.h"
#include "sysc/kernel/sc_method_process.h"
#include "sysc/kernel/sc_thread_process.h"
#include "sysc/kernel/sc_process_handle.h"
#include "sysc/kernel/sc_sensitive.h"
#include "sysc/communication/sc_signal_ports.h"
#include "sysc/utils/sc_utils_ids.h"

namespace sc_core {

// support functions

static
sc_method_handle
as_method_handle( sc_process_b* handle_ )
{
    return DCAST<sc_method_handle>( handle_ );
}

static
sc_thread_handle
as_thread_handle( sc_process_b* handle_ )
{
    return DCAST<sc_thread_handle>( handle_ );
}

static 
void
warn_no_parens()
{
    static bool warn_no_parentheses=true;
    if ( warn_no_parentheses )
    {
	warn_no_parentheses=false;
	SC_REPORT_INFO(SC_ID_IEEE_1666_DEPRECATION_,
	    "use of () to specify sensitivity is deprecated, use << instead" );
    }
}

// ----------------------------------------------------------------------------
//  CLASS : sc_sensitive
//
//  Static sensitivity class for events.
// ----------------------------------------------------------------------------

// constructor

sc_sensitive::sc_sensitive( sc_module* module_ )
: m_module( module_ ),
  m_mode( SC_NONE_ ),
  m_handle( 0 )
{}


// destructor

sc_sensitive::~sc_sensitive()
{}


// changing between process handles

sc_sensitive&
sc_sensitive::operator << ( sc_process_handle handle_ )
{
    switch ( handle_.proc_kind() )
	{
      case SC_CTHREAD_PROC_:
      case SC_THREAD_PROC_:
        m_mode = SC_THREAD_;
	break;
      case SC_METHOD_PROC_:
	m_mode = SC_METHOD_;
	break;
      default:
	assert(0);
    }
    m_handle = (sc_process_b*)handle_;
    return *this;
}

sc_sensitive&
sc_sensitive::operator << ( const sc_event& event_ )
{
    // check
    if( sc_is_running() ) {
	SC_REPORT_ERROR( SC_ID_MAKE_SENSITIVE_, "simulation running" );
    }

    // make sensitive
    switch( m_mode ) {
    case SC_METHOD_:
    case SC_THREAD_: {
	m_handle->add_static_event( event_ );
	break;
    }
    case SC_NONE_:
        /* do nothing */
        break;
    }

    return *this;
}

void
sc_sensitive::make_static_sensitivity(
    sc_process_b* handle_, const sc_event& event_)
{
    handle_->add_static_event( event_ );
}


sc_sensitive&
sc_sensitive::operator << ( const sc_interface& interface_ )
{
    // check
    if( sc_is_running() ) {
	SC_REPORT_ERROR( SC_ID_MAKE_SENSITIVE_, "simulation running" );
    }

    // make sensitive
    switch( m_mode ) {
    case SC_METHOD_:
    case SC_THREAD_: {
	m_handle->add_static_event( interface_.default_event() );
	break;
    }
    case SC_NONE_:
        /* do nothing */
        break;
    }

    return *this;
}

void
sc_sensitive::make_static_sensitivity(
    sc_process_b* handle_, const sc_interface& interface_)
{
    handle_->add_static_event( interface_.default_event() );
}

sc_sensitive&
sc_sensitive::operator << ( const sc_port_base& port_ )
{
    // check
    if( sc_is_running() ) {
	SC_REPORT_ERROR( SC_ID_MAKE_SENSITIVE_, "simulation running" );
    }

    // make sensitive
    switch( m_mode ) {
    case SC_METHOD_: {
	port_.make_sensitive( as_method_handle( m_handle ) );
	break;
    }
    case SC_THREAD_: {
	port_.make_sensitive( as_thread_handle( m_handle ) );
	break;
    }
    case SC_NONE_:
        /* do nothing */
        break;
    }

    return *this;
}

void
sc_sensitive::make_static_sensitivity(
    sc_process_b* handle_, const sc_port_base& port_)
{
    sc_method_handle handle_m = as_method_handle( handle_ );
    if ( handle_m ) {
	port_.make_sensitive( handle_m );
	return;
    }
    sc_thread_handle handle_t = as_thread_handle( handle_ );
    // assert(handle_t);
    port_.make_sensitive( handle_t );
}

sc_sensitive&
sc_sensitive::operator << ( sc_event_finder& event_finder_ )
{
    // check
    if( sc_is_running() ) {
	SC_REPORT_ERROR( SC_ID_MAKE_SENSITIVE_, "simulation running" );
    }

    // make sensitive
    switch( m_mode ) {
    case SC_METHOD_: {
	event_finder_.port().make_sensitive( as_method_handle( m_handle ),
					     &event_finder_ );
	break;
    }
    case SC_THREAD_: {
	event_finder_.port().make_sensitive( as_thread_handle( m_handle ),
					     &event_finder_ );
	break;
    }
    case SC_NONE_:
        /* do nothing */
        break;
    }

    return *this;
}

void 
sc_sensitive::make_static_sensitivity(
    sc_process_b* handle_, sc_event_finder& event_finder_)
{
    if (sc_is_running()) {
      handle_->add_static_event( event_finder_.find_event() );
    } else {
	sc_method_handle handle_m = as_method_handle( handle_ );
	if ( handle_m ) {
	    event_finder_.port().make_sensitive( handle_m, &event_finder_ );
	    return;
        }
	sc_thread_handle handle_t = as_thread_handle( handle_ );
	// assert(handle_t);
	event_finder_.port().make_sensitive( handle_t, &event_finder_);
    }
}


sc_sensitive&
sc_sensitive::operator () ( const sc_event& event_ )
{
    warn_no_parens();
    return operator << ( event_ );
}

sc_sensitive&
sc_sensitive::operator () ( const sc_interface& interface_ )
{
    warn_no_parens();
    return operator << ( interface_ );
}

sc_sensitive&
sc_sensitive::operator () ( const sc_port_base& port_ )
{
    warn_no_parens();
    return operator << ( port_ );
}

sc_sensitive&
sc_sensitive::operator () ( sc_event_finder& event_finder_ )
{
    warn_no_parens();
    return operator << ( event_finder_ );
}


sc_sensitive&
sc_sensitive::operator () ( sc_cthread_handle handle_,
			    sc_event_finder& event_finder_ )
{
    event_finder_.port().make_sensitive( handle_, &event_finder_ );
    return *this;
}

sc_sensitive&
sc_sensitive::operator () ( sc_cthread_handle handle_,
			    const in_if_b_type& interface_ )
{
    handle_->add_static_event( interface_.posedge_event() );
    return *this;
}

sc_sensitive&
sc_sensitive::operator () ( sc_cthread_handle handle_,
			    const in_if_l_type& interface_ )
{
    handle_->add_static_event( interface_.posedge_event() );
    return *this;
}

sc_sensitive&
sc_sensitive::operator () ( sc_cthread_handle handle_,
			    const in_port_b_type& port_ )
{
    port_.make_sensitive( handle_, &port_.pos() );
    return *this;
}

sc_sensitive&
sc_sensitive::operator () ( sc_cthread_handle handle_,
			    const in_port_l_type& port_ )
{
    port_.make_sensitive( handle_, &port_.pos() );
    return *this;
}

sc_sensitive&
sc_sensitive::operator () ( sc_cthread_handle handle_,
			    const inout_port_b_type& port_ )
{
    port_.make_sensitive( handle_, &port_.pos() );
    return *this;
}

sc_sensitive&
sc_sensitive::operator () ( sc_cthread_handle handle_,
			    const inout_port_l_type& port_ )
{
    port_.make_sensitive( handle_, &port_.pos() );
    return *this;
}

void sc_sensitive::reset()
{
    m_mode = SC_NONE_;
}


// ----------------------------------------------------------------------------
//  CLASS : sc_sensitive_pos
//
//  Static sensitivity class for positive edge events.
// ----------------------------------------------------------------------------

static void sc_deprecated_sensitive_pos()
{
    static bool warn_sensitive_pos=true;
    if ( warn_sensitive_pos )
    {
        warn_sensitive_pos=false;
        SC_REPORT_INFO(SC_ID_IEEE_1666_DEPRECATION_,
	 "sc_sensitive_pos is deprecated use sc_sensitive << with pos() instead" );
    }
}

// constructor

sc_sensitive_pos::sc_sensitive_pos( sc_module* module_ )
: m_module( module_ ),
  m_mode( SC_NONE_ ),
  m_handle( 0 )
{}


// destructor

sc_sensitive_pos::~sc_sensitive_pos()
{}


// changing between process handles

sc_sensitive_pos&
sc_sensitive_pos::operator << ( sc_process_handle handle_ )
{
    switch ( handle_.proc_kind() )
	{
      case SC_CTHREAD_PROC_:
      case SC_THREAD_PROC_:
        m_mode = SC_THREAD_;
	break;
      case SC_METHOD_PROC_:
	m_mode = SC_METHOD_;
	break;
      default:
	assert(0);
    }
    m_handle = (sc_process_b*)handle_;
    return *this;
}

sc_sensitive_pos&
sc_sensitive_pos::operator << ( sc_method_handle handle_ )
{
    m_mode = SC_METHOD_;
    m_handle = handle_;
    return *this;
}

sc_sensitive_pos&
sc_sensitive_pos::operator << ( sc_thread_handle handle_ )
{
    m_mode = SC_THREAD_;
    m_handle = handle_;
    return *this;
}


sc_sensitive_pos&
sc_sensitive_pos::operator << ( const in_if_b_type& interface_ )
{
    sc_deprecated_sensitive_pos();
    // check
    if( sc_is_running() ) {
	SC_REPORT_ERROR( SC_ID_MAKE_SENSITIVE_POS_, "simulation running" );
    }

    // make sensitive
    switch( m_mode ) {