sc_cor.h

Go to the documentation of this file.

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

  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
  language governing rights and limitations under the License.

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

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

  sc_cor.h -- Coroutine abstract base classes.

  Original Author: Martin Janssen, Synopsys, Inc., 2001-12-18

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


#ifndef SC_COR_H
#define SC_COR_H
 

#include <cassert>
#include <cstdlib>

//#define SC_LOCK_CHECK // 05/27/2015 GL: check the state of the kernel lock

namespace sc_core {

class sc_simcontext;


/**************************************************************************/
typedef void (sc_cor_fn)( void* );


/**************************************************************************/
class sc_cor
{
protected:

    // constructor
    sc_cor() {}

public:

    // destructor
    virtual ~sc_cor() {}

    // switch stack protection on/off
    virtual void stack_protect( bool /* enable */ ) {}

    virtual void increment_counter() = 0;

    virtual void decrement_counter() = 0;

    virtual unsigned int get_counter() = 0;

private:

    // disabled
    sc_cor( const sc_cor& );
    sc_cor& operator = ( const sc_cor& );
};


/**************************************************************************/
class sc_cor_pkg
{
public:

    // constructor
    sc_cor_pkg( sc_simcontext* simc )
        : m_simc( simc ) { assert( simc != 0 ); }

    // destructor
    virtual ~sc_cor_pkg() {}

    // create a new coroutine
   virtual sc_cor* create(
            std::size_t stack_size, sc_cor_fn* fn, void* arg ) = 0;

    // yield to the next coroutine
    virtual void yield( sc_cor* next_cor ) = 0;

    virtual void wait( sc_cor* cur_cor ) = 0;

    virtual void go( sc_cor* next_cor ) = 0;

    // abort the current coroutine (and resume the next coroutine)
    virtual void abort( sc_cor* next_cor ) = 0;

    // join another coroutine
    virtual void join( sc_cor* join_cor ) = 0;

    // get the main coroutine
    virtual sc_cor* get_main() = 0;

    virtual void acquire_sched_mutex() = 0;

    virtual void release_sched_mutex() = 0;

    virtual void set_thread_specific( void* process_b ) = 0;

    virtual void* get_thread_specific() = 0;

    virtual bool is_locked() = 0;

    virtual bool is_unlocked() = 0;

    virtual bool is_lock_owner() = 0;

    virtual bool is_not_owner() = 0;

    virtual bool is_locked_and_owner() = 0;

    // get the simulation context
    sc_simcontext* simcontext()
        { return m_simc; }

private:

    sc_simcontext* m_simc;

private:

    // disabled
    sc_cor_pkg();
    sc_cor_pkg( const sc_cor_pkg& );
    sc_cor_pkg& operator = ( const sc_cor_pkg& );
};

} // namespace sc_core

// $Log: sc_cor.h,v $
// Revision 1.7  2011/08/26 20:46:09  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 1.6  2011/08/15 16:43:24  acg
//  Torsten Maehne: changes to remove unused argument warnings.
//
// Revision 1.5  2011/02/18 20:27:14  acg
//  Andy Goodrich: Updated Copyrights.
//
// Revision 1.4  2011/02/13 21:47:37  acg
//  Andy Goodrich: update copyright notice.
//
// Revision 1.3  2011/01/19 23:21:49  acg
//  Andy Goodrich: changes for IEEE 1666 2011
//
// Revision 1.2  2008/05/22 17:06:24  acg
//  Andy Goodrich: updated copyright notice to include 2008.
//
// Revision 1.1.1.1  2006/12/15 20:20:05  acg
// SystemC 2.3
//
// Revision 1.3  2006/01/13 18:44:29  acg
// Added $Log to record CVS changes into the source.
//

#endif

// Taf!