memproc.h

//
// memproc.h
//
// Copyright (C) 1996 Limit Point Systems, Inc.
//
// Author: Curtis Janssen <cljanss@limitpt.com>
// Maintainer: LPS
//
// This file is part of the SC Toolkit.
//
// The SC Toolkit 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, or (at your option)
// any later version.
//
// The SC Toolkit 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 SC Toolkit; see the file COPYING.LIB.  If not, write to
// the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
//
// The U.S. Government is granted a limited license as per AL 91-7.
//
 
#ifndef _util_group_memproc_h
#define _util_group_memproc_h
 
#include <sys/types.h>
 
#include <util/group/memmsg.h>
 
namespace sc {
 
class ProcMemoryGrp: public MemoryGrp {
  private:
    char *data_;
  public:
    ProcMemoryGrp();
    ProcMemoryGrp(const Ref<KeyVal>&);
    ~ProcMemoryGrp();
 
    void set_localsize(size_t);
    void *localdata();
 
    void *obtain_readwrite(distsize_t offset, size_t size);
    void *obtain_readonly(distsize_t offset, size_t size);
    void *obtain_writeonly(distsize_t offset, size_t size);
    void release_readonly(void *data, distsize_t offset, size_t size);
    void release_writeonly(void *data, distsize_t offset, size_t size);
    void release_readwrite(void *data, distsize_t offset, size_t size);
 
    void sync();
};
 
}
 
#endif
 
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