cosyselect.h

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/*--------------------------------------------------------------------
 *
 * (C) Copyright Koninklijke Philips Electronics NV 2006. 
 * All rights reserved. This software is licensed under the terms of
 * version 2.1 of the GNU Lesser General Public License as published 
 * by the Free Software Foundation. For licensing and warranty
 * information, see the file COPYING in the main directory.
 *
 *------------------------------------------------------------------*/

#ifndef COSYSELECT_H
#define COSYSELECT_H

#include "rte.h"
#include "rteselect.h"
#include "semaphoreapi.h"
#ifdef PREEMPTIVE
#include "mutexapi.h"
#endif

#include <vector>

class cosyFifo;
class InPortImpl;
class OutPortImpl;

class cosySelect : public rteSelect
{
public:
  cosySelect(SelectImpl& s, cosyRte& r);
  ~cosySelect();

  void pushBack(const InPortImpl& p, unsigned int n);
  void pushBack(const OutPortImpl& p, unsigned int n);

  unsigned int select();

                  
  void signal();  // should be private,
                  // but is called by cosyFifo::read/write

private:
  static bool random;

  std::vector<cosyFifo*>    f;     // the fifos
  std::vector<unsigned int> s;     // number of items
  std::vector<bool>         input; // true when select from input
  std::vector<unsigned int> r;     // return values

  unsigned int retvalue;
  Semaphore    sema;      
  bool         block;
  cosyRte*     rte;

#ifdef PREEMPTIVE
  Mutex mutex;
  void lock();
  void unlock();
#endif

  friend class cosyNetwork;
};

#endif

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