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Synchronized.hpp

00001 #if   !defined(__SYNCHRONIZED_HPP)
00002 #define  __SYNCHRONIZED_HPP
00003 
00004 /*
00005   CoreLinux++ 
00006   Copyright (C) 1999,2000 CoreLinux Consortium
00007   
00008    The CoreLinux++ Library is free software; you can redistribute it and/or
00009    modify it under the terms of the GNU Library General Public License as
00010    published by the Free Software Foundation; either version 2 of the
00011    License, or (at your option) any later version.
00012 
00013    The CoreLinux++ Library Library is distributed in the hope that it will 
00014    be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
00015    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00016    Library General Public License for more details.
00017 
00018    You should have received a copy of the GNU Library General Public
00019    License along with the GNU C Library; see the file COPYING.LIB.  If not,
00020    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
00021    Boston, MA 02111-1307, USA.  
00022 */
00023 
00024 #if !defined IN_COMMON_HPP
00025    #error Synchronized.hpp is included by Common.hpp only.
00026 #endif
00027 
00028 #if !defined(__SEMAPHOREEXCEPTION_HPP)
00029 #include <SemaphoreException.hpp>
00030 #endif
00031 
00032 namespace corelinux
00033 {
00034   DECLARE_CLASS( Synchronized );
00035 
00041   class Synchronized
00042   {
00043   protected:
00044     
00045     DECLARE_CLASS( Guard );
00046 
00053     class Guard
00054     {
00055 
00056     public:
00057 
00059 
00060       Guard( GuardCref );
00061 
00062 
00064 
00065       ~Guard( void );
00066 
00067 
00068       //
00069       // Mutator
00070       //
00071 
00073 
00074       void  release( void );
00075 
00076     protected:
00077 
00078       friend   class Synchronized;
00079 
00081 
00082       Guard( SynchronizedPtr );
00083 
00085 
00086       Guard( void );
00087 
00089 
00090       GuardRef operator=( GuardCref );
00091 
00092     private:
00093 
00095 
00096       mutable  SynchronizedPtr   theSynchronized;
00097     };
00098 
00099   public:
00100 
00101     //
00102     // Constructors and destructor
00103     //
00104 
00106 
00107     Synchronized( void );
00108 
00110 
00111     Synchronized( SynchronizedCref );
00112 
00114 
00115     virtual           ~Synchronized( void );
00116 
00117     //
00118     // Operator overloads
00119     //
00120 
00122 
00123     SynchronizedRef   operator=( SynchronizedCref );
00124 
00126 
00127     bool  operator==( SynchronizedCref ) const;
00128 
00129   protected:
00130 
00131     //
00132     // Mutators
00133     //
00134 
00141     Guard    access( void ) const throw(SemaphoreException) ;
00142 
00143 
00144   };
00145 
00146 #define  GUARD \
00147    Guard    aGuardedLock( this->access() )
00148 }
00149 
00150 
00151 #endif // if   !defined(__SYNCHRONIZED_HPP)
00152 
00153 /*
00154    Common rcs information do not modify
00155    $Author: prudhomm $
00156    $Revision: 1.4 $
00157    $Date: 2000/08/31 22:52:20 $
00158    $Locker:  $
00159 */
00160 

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