nevrax.org : docs

00001 
+00007 /* Copyright, 2000-2002 Nevrax Ltd.
+00008  *
+00009  * This file is part of NEVRAX NEL.
+00010  * NEVRAX NEL is free software; you can redistribute it and/or modify
+00011  * it under the terms of the GNU General Public License as published by
+00012  * the Free Software Foundation; either version 2, or (at your option)
+00013  * any later version.
+00014 
+00015  * NEVRAX NEL is distributed in the hope that it will be useful, but
+00016  * WITHOUT ANY WARRANTY; without even the implied warranty of
+00017  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+00018  * General Public License for more details.
+00019 
+00020  * You should have received a copy of the GNU General Public License
+00021  * along with NEVRAX NEL; see the file COPYING. If not, write to the
+00022  * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+00023  * MA 02111-1307, USA.
+00024  */
+00025 
+00026 #ifndef NL_SHARED_MEMORY_H
+00027 #define NL_SHARED_MEMORY_H
+00028 
+00029 #include "nel/misc/types_nl.h"
+00030 
+00031 #ifdef NL_OS_WINDOWS
+00032 #include <map>
+00033 #endif
+00034 
+00035 namespace NLMISC {
+00036 
+00037 
+00038 #ifdef NL_OS_WINDOWS
+00039 typedef const char *TSharedMemId;
+00040 #else
+00041 typedef key_t TSharedMemId;
+00042 #endif
+00043 
+00044 
+00045 /* Helpers:
+00046  * toSharedMemId: converts an integer to TSharedMemId
+00047  * NL_SMID: format type used for printf syntax. Ex: nldebug( "Segment %"NL_SMID" was created", sharedMemId );
+00048  */
+00049 #ifdef NL_OS_WINDOWS
+00050 #define toSharedMemId( id ) toString( "%d", id ).c_str()
+00051 #define NL_SMID "s"
+00052 #else
+00053 #define toSharedMemId( id ) (id)
+00054 #define NL_SMID "d"
+00055 #endif
+00056 
+00057 
+00068 class CSharedMemory
+00069 {
+00070 public:
+00071 
+00072         // Constructor
+00073         //CSharedMemory();
+00074 
+00079         static void *           createSharedMemory( TSharedMemId sharedMemId, uint32 size );
+00080 
+00084         static void *           accessSharedMemory( TSharedMemId sharedMemId );
+00085 
+00090         static bool                     closeSharedMemory( void * accessAddress );
+00091 
+00102   static void destroySharedMemory( TSharedMemId sharedMemId, bool force=false );
+00103 };
+00104 
+00105 
+00106 } // NLMISC
+00107 
+00108 
+00109 #endif // NL_SHARED_MEMORY_H
+00110 
+00111 /* End of shared_memory.h */
+