[3745] | 1 | /**************************************************************************
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| 2 | *
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| 3 | * filestats.c -- Functions for keeping stats on file accesses
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| 4 | * Copyright (C) 1994 Neil Sharman
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| 5 | *
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| 6 | * This program is free software; you can redistribute it and/or modify
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| 7 | * it under the terms of the GNU General Public License as published by
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| 8 | * the Free Software Foundation; either version 2 of the License, or
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| 9 | * (at your option) any later version.
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| 10 | *
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| 11 | * This program is distributed in the hope that it will be useful,
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | * GNU General Public License for more details.
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| 15 | *
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| 16 | * You should have received a copy of the GNU General Public License
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| 17 | * along with this program; if not, write to the Free Software
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| 18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 19 | *
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| 20 | * $Id: filestats.c 3745 2003-02-20 21:20:24Z mdewsnip $
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| 21 | *
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| 22 | **************************************************************************/
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| 23 |
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| 24 |
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| 25 | /*
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| 26 | $Log$
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| 27 | Revision 1.1 2003/02/20 21:14:16 mdewsnip
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| 28 | Addition of MG package for search and retrieval
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| 29 |
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| 30 | Revision 1.1 1999/08/10 21:16:48 sjboddie
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| 31 | renamed mg-1.3d directory mg
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| 32 |
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| 33 | Revision 1.1 1998/11/17 09:31:54 rjmcnab
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| 34 | *** empty log message ***
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| 35 |
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| 36 | * Revision 1.1 1994/08/22 00:24:42 tes
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| 37 | * Initial placement under CVS.
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| 38 | *
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| 39 | */
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| 40 |
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| 41 | static char *RCSID = "$Id: filestats.c 3745 2003-02-20 21:20:24Z mdewsnip $";
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| 42 |
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| 43 | #include "sysfuncs.h"
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| 44 |
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| 45 | #include "memlib.h"
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| 46 | #include "filestats.h"
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| 47 | #include "netorder.h" /* [RPAP - Jan 97: Endian Ordering] */
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| 48 |
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| 49 |
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| 50 | File *
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| 51 | Fopen (char *name, char *mode, unsigned long magic)
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| 52 | {
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| 53 | FILE *f;
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| 54 | File *F;
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| 55 | unsigned long m;
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| 56 | if (!(f = fopen (name, mode)))
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| 57 | return (NULL);
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| 58 | if (magic)
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| 59 | switch (*mode)
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| 60 | {
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| 61 | case 'r':
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| 62 | fread ((char *) &m, sizeof (m), 1, f);
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| 63 | NTOHUL(m); /* [RPAP - Jan 97: Endian Ordering] */
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| 64 | if (m != magic)
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| 65 | {
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| 66 | fclose (f);
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| 67 | return (NULL);
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| 68 | }
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| 69 | break;
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| 70 | case 'w':
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| 71 | HTONUL(magic); /* [RPAP - Jan 97: Endian Ordering] */
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| 72 | fwrite ((char *) &magic, sizeof (magic), 1, f);
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| 73 | }
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| 74 | if (!(F = Xmalloc (sizeof (File))))
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| 75 | {
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| 76 | fclose (f);
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| 77 | return (NULL);
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| 78 | }
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| 79 | F->pathname = Xstrdup (name);
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| 80 | F->name = strrchr (F->pathname, '/');
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| 81 | F->name = F->name ? F->name + 1 : F->pathname;
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| 82 | F->f = f;
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| 83 | F->Current.NumSeeks = F->Current.NumReads = F->Current.NumBytes = 0;
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| 84 | F->Cumulative = F->Current;
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| 85 | return (F);
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| 86 | }
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| 87 |
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| 88 |
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| 89 | int
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| 90 | Fclose (File * F)
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| 91 | {
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| 92 | int num;
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| 93 | if (!F)
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| 94 | return (0);
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| 95 | num = fclose (F->f);
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| 96 | if (F->pathname)
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| 97 | Xfree (F->pathname);
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| 98 | Xfree (F);
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| 99 | return (num);
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| 100 | }
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| 101 |
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| 102 | size_t
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| 103 | Fread (void *ptr, size_t size, size_t nitems, File * F)
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| 104 | {
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| 105 | int num;
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| 106 | num = fread ((char *) ptr, size, nitems, F->f);
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| 107 | F->Current.NumReads++;
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| 108 | F->Current.NumBytes += num * size;
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| 109 | return (num);
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| 110 | }
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| 111 |
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| 112 | int
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| 113 | Fseek (File * F, long offset, int ptrname)
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| 114 | {
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| 115 | int num;
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| 116 | num = fseek (F->f, offset, ptrname);
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| 117 | F->Current.NumSeeks++;
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| 118 | return (num);
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| 119 | }
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| 120 |
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| 121 | void
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| 122 | Rewind (File * F)
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| 123 | {
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| 124 | rewind (F->f);
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| 125 | F->Current.NumSeeks++;
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| 126 | }
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| 127 |
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| 128 |
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| 129 | void
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| 130 | ZeroFileStats (File * F)
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| 131 | {
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| 132 | F->Cumulative.NumSeeks += F->Current.NumSeeks;
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| 133 | F->Cumulative.NumReads += F->Current.NumReads;
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| 134 | F->Cumulative.NumBytes += F->Current.NumBytes;
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| 135 | F->Current.NumSeeks = F->Current.NumReads = F->Current.NumBytes = 0;
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| 136 | }
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