memproc.h Source File

00001 //
00002 // memproc.h
00003 //
00004 // Copyright (C) 1996 Limit Point Systems, Inc.
00005 //
00006 // Author: Curtis Janssen <cljanss@limitpt.com>
00007 // Maintainer: LPS
00008 //
00009 // This file is part of the SC Toolkit.
00010 //
00011 // The SC Toolkit is free software; you can redistribute it and/or modify
00012 // it under the terms of the GNU Library General Public License as published by
00013 // the Free Software Foundation; either version 2, or (at your option)
00014 // any later version.
00015 //
00016 // The SC Toolkit is distributed in the hope that it will be useful,
00017 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00018 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00019 // GNU Library General Public License for more details.
00020 //
00021 // You should have received a copy of the GNU Library General Public License
00022 // along with the SC Toolkit; see the file COPYING.LIB.  If not, write to
00023 // the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
00024 //
00025 // The U.S. Government is granted a limited license as per AL 91-7.
00026 //
00027 
00028 #ifdef __GNUC__
00029 #pragma interface
00030 #endif
00031 
00032 #ifndef _util_group_memproc_h
00033 #define _util_group_memproc_h
00034 
00035 #include <sys/types.h>
00036 
00037 #include <util/group/memmsg.h>
00038 
00039 namespace sc {
00040 
00043 class ProcMemoryGrp: public MemoryGrp {
00044   private:
00045     char *data_;
00046   public:
00047     ProcMemoryGrp();
00048     ProcMemoryGrp(const Ref<KeyVal>&);
00049     ~ProcMemoryGrp();
00050 
00051     void set_localsize(size_t);
00052     void *localdata();
00053 
00054     void *obtain_readwrite(distsize_t offset, int size);
00055     void *obtain_readonly(distsize_t offset, int size);
00056     void *obtain_writeonly(distsize_t offset, int size);
00057     void release_readonly(void *data, distsize_t offset, int size);
00058     void release_writeonly(void *data, distsize_t offset, int size);
00059     void release_readwrite(void *data, distsize_t offset, int size);
00060 
00061     void sync();
00062 };
00063 
00064 }
00065 
00066 #endif
00067 
00068 // Local Variables:
00069 // mode: c++
00070 // c-file-style: "CLJ"
00071 // End: