sc_join.h

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  Licensed to Accellera Systems Initiative Inc. (Accellera) under one or
  more contributor license agreements.  See the NOTICE file distributed
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  Accellera licenses this file to you under the Apache License, Version 2.0
  (the "License"); you may not use this file except in compliance with the
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  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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/*****************************************************************************
 
  sc_join.h -- Join Process Synchronization Definition
 
  Original Author: Andy Goodrich, Forte Design Systems, 5 May 2003
 
  CHANGE LOG AT THE END OF THE FILE
 *****************************************************************************/
 
// $Log: sc_join.h,v $
// Revision 1.8  2011/08/26 21:45:00  acg
//  Andy Goodrich: fix internal event naming.
//
// 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.
//
 
#ifndef SC_JOIN_H
#define SC_JOIN_H
 
#include "sysc/kernel/sc_process.h"
#include "sysc/kernel/sc_wait.h"
 
namespace sc_core {
 
//==============================================================================
// CLASS sc_join
//
// This class provides a way of waiting for a set of threads to complete their
// execution. The threads whose completion is to be monitored are registered,
// and upon their completion an event notification will occur.
//==============================================================================
class SC_API sc_join : public sc_process_monitor {
    friend class sc_process_b;
    friend class sc_process_handle;
  public:
    sc_join();
    void add_process( sc_process_handle process_h );
    inline int process_count();
    virtual void signal(sc_thread_handle thread_p, int type);
    inline void wait();
    inline void wait_clocked();
 
  protected: 
    void add_process( sc_process_b* process_p );
 
  protected:
    sc_event m_join_event;  // Event to notify when all threads have reported.
    int      m_threads_n;   // # of threads still need to wait for.
 
  private:
    sc_join( const sc_join& );
    sc_join& operator = ( const sc_join& );
};
 
int sc_join::process_count() { return m_threads_n; }
 
// suspend a thread that does not have a sensitivity list:
 
inline void sc_join::wait() { ::sc_core::wait(m_join_event); }
 
// suspend a thread that has a sensitivity list:
 
inline void sc_join::wait_clocked()
{
    do { ::sc_core::wait(); } while (m_threads_n != 0);
}
 
#define SC_CJOIN \
    }; \
    sc_core::sc_join           join; \
    for ( unsigned int i = 0; \
        i < sizeof(forkees)/sizeof(sc_core::sc_process_handle); \
        i++ ) \
        join.add_process(forkees[i]); \
    join.wait_clocked(); \
}
 
#define SC_FORK \
{ \
    sc_core::sc_process_handle forkees[] = {
 
#define SC_JOIN \
    }; \
    sc_core::sc_join           join; \
    for ( unsigned int i = 0; \
        i < sizeof(forkees)/sizeof(sc_core::sc_process_handle); \
        i++ ) \
        join.add_process(forkees[i]); \
    join.wait(); \
}
 
} // namespace sc_core
 
// Revision 1.6  2011/08/24 22:05:50  acg
//  Torsten Maehne: initialization changes to remove 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  2009/07/28 01:10:53  acg
//  Andy Goodrich: updates for 2.3 release candidate.
//
// Revision 1.2  2008/05/22 17:06:25  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 1.5  2006/04/28 21:38:27  acg
//  Andy Goodrich: fixed loop constraint that was using sizeof(sc_thread_handle)
//  rather than sizeof(sc_process_handle).
//
// Revision 1.4  2006/01/13 18:44:29  acg
// Added $Log to record CVS changes into the source.
 
#endif // SC_JOIN_H