sc_semaphore_if.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
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 *****************************************************************************/

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

  sc_semaphore_if.h -- The sc_semaphore_if interface class.

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

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

#ifndef SC_SEMAPHORE_IF_H
#define SC_SEMAPHORE_IF_H

#include "sysc/communication/sc_interface.h"

namespace sc_core {

// ----------------------------------------------------------------------------
//  CLASS : sc_semaphore_if
//
//  The sc_semaphore_if interface class.
// ----------------------------------------------------------------------------

class sc_semaphore_if
: virtual public sc_interface
{
public:

    // the classical operations: wait(), trywait(), and post()

    // lock (take) the semaphore, block if not available
    virtual int wait() = 0;

    // lock (take) the semaphore, return -1 if not available
    virtual int trywait() = 0;

    // unlock (give) the semaphore
    virtual int post() = 0;

    // get the value of the semphore
    virtual int get_value() const = 0;

protected:

    // constructor

    sc_semaphore_if()
        {}

private:

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

} // namespace sc_core

//$Log: sc_semaphore_if.h,v $
//Revision 1.3  2011/08/26 20:45:42  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 1.2  2011/02/18 20:23:45  acg
// Andy Goodrich: Copyright update.
//
//Revision 1.1.1.1  2006/12/15 20:20:04  acg
//SystemC 2.3
//
//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 1.8  2005/06/10 22:43:55  acg
//Added CVS change log annotation.
//

#endif

// Taf!