MPQC 2.3.1

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fileproc.h
1 //
2 // fileproc.h
3 //
4 // Copyright (C) 1996 Limit Point Systems, Inc.
5 //
6 // Author: Curtis Janssen <cljanss@limitpt.com>
7 // Maintainer: LPS
8 //
9 // This file is part of the SC Toolkit.
10 //
11 // The SC Toolkit is free software; you can redistribute it and/or modify
12 // it under the terms of the GNU Library General Public License as published by
13 // the Free Software Foundation; either version 2, or (at your option)
14 // any later version.
15 //
16 // The SC Toolkit is distributed in the hope that it will be useful,
17 // but WITHOUT ANY WARRANTY; without even the implied warranty of
18 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 // GNU Library General Public License for more details.
20 //
21 // You should have received a copy of the GNU Library General Public License
22 // along with the SC Toolkit; see the file COPYING.LIB. If not, write to
23 // the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
24 //
25 // The U.S. Government is granted a limited license as per AL 91-7.
26 //
27
28 #ifdef __GNUC__
29 #pragma interface
30 #endif
31
32 #ifndef _util_group_fileproc_h
33 #define _util_group_fileproc_h
34
35 #include <sys/types.h>
36
37 #include <util/group/memmsg.h>
38
39 namespace sc {
40
43 class ProcFileGrp: public FileGrp {
44 private:
45 int datafile_;
46 public:
47 ProcFileGrp();
48 ProcFileGrp(const Ref<KeyVal>&);
49 ~ProcFileGrp();
50
51 ProcFileGrp* clone();
52
53 void set_localsize(size_t);
54 void *localdata();
55
56 void *obtain_readwrite(distsize_t offset, int size);
57 void *obtain_readonly(distsize_t offset, int size);
58 void *obtain_writeonly(distsize_t offset, int size);
59 void release_readonly(void *data, distsize_t offset, int size);
60 void release_writeonly(void *data, distsize_t offset, int size);
61 void release_readwrite(void *data, distsize_t offset, int size);
62
63 void sync();
64 };
65
66 }
67
68 #endif
69
70 // Local Variables:
71 // mode: c++
72 // c-file-style: "CLJ"
73 // End: