---

Semaphore.hpp

#if   !defined(__SEMAPHORE_HPP)
#define  __SEMAPHORE_HPP

/*
  CoreLinux++ 
  Copyright (C) 1999,2000 CoreLinux Consortium
  
   The CoreLinux++ Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public License as
   published by the Free Software Foundation; either version 2 of the
   License, or (at your option) any later version.

   The CoreLinux++ Library Library is distributed in the hope that it will 
   be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If not,
   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  
*/

#if !defined(__COMMON_HPP)
#include <Common.hpp>
#endif

#if   !defined(__ABSTRACTSEMAPHORE_HPP)
#include <AbstractSemaphore.hpp>
#endif

#if   !defined(__SEMAPHOREEXCEPTION_HPP)
#include <SemaphoreException.hpp>
#endif

namespace   corelinux
{

   DECLARE_CLASS( Semaphore );

   class Semaphore : public AbstractSemaphore
   {

   public:


      //
      // Constructors and destructors
      //

                           Semaphore
                              ( 
                                 SemaphoreGroupPtr,
                                 SemaphoreIdentifierRef,
                                 bool Recursive=false,
                                 bool Balking=false
                              ) throw ( NullPointerException );


      virtual              ~Semaphore( void );

      //
      // Operator overloads
      //


               bool     operator==( SemaphoreCref aRef ) const;

      //
      // Accessors
      //


      virtual  bool  isBalkingEnabled( void ) const;


      virtual  bool  isRecursionEnabled( void ) const;


      virtual  ThreadIdentifierCref getOwningThreadIdentifier( void ) const;


      virtual  CounterCref    getRecursionQueueLength( void ) const;


   protected:

      //
      // Constructors
      //


                           Semaphore( void ) 
                              throw(Assertion);


                           Semaphore( SemaphoreCref ) 
                              throw(Assertion);

      //
      // Operator overloads
      //

               SemaphoreRef operator=( SemaphoreCref ) 
                              throw(Assertion);


               CounterCref operator++( void );


               CounterCref operator--( void );

      //
      // Accessors
      //


      virtual  ThreadIdentifierRef  getOwnerId( void );

      //
      // Mutators
      //


      virtual  void  setOwnerId( void );


      virtual  void  setRecursionQueueLength( Counter );


      virtual  void  resetOwnerId( void );


   private:


               ThreadIdentifier           theOwningThread;


               Counter  theRecursionQueueLength;
         

               bool     theRecursiveMode;


               bool     theBalkingMode;

   };
}

#endif // if !defined(__SEMAPHORE_HPP)

/*
   Common rcs information do not modify
   $Author: frankc $
   $Revision: 1.2 $
   $Date: 2000/06/02 11:51:52 $
   $Locker:  $
*/

---

This is the CoreLinux++ reference manual
Provided by The CoreLinux Consortium