| 1 | /* stats.c - malloc statistics */
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| 2 |
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| 3 | /* Copyright (C) 2001-2003 Free Software Foundation, Inc.
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| 4 |
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| 5 | This program is free software; you can redistribute it and/or modify
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| 6 | it under the terms of the GNU General Public License as published by
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| 7 | the Free Software Foundation; either version 2, or (at your option)
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| 8 | any later version.
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| 9 |
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| 10 | This program is distributed in the hope that it will be useful,
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | GNU General Public License for more details.
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| 14 |
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| 15 | You should have received a copy of the GNU General Public License
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| 16 | along with this program; if not, write to the Free Software
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| 17 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
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| 18 |
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| 19 | #ifdef HAVE_CONFIG_H
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| 20 | # include <config.h>
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| 21 | #endif
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| 22 |
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| 23 | #include "imalloc.h"
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| 24 |
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| 25 | #ifdef MALLOC_STATS
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| 26 |
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| 27 | #include <stdio.h>
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| 28 | #ifdef HAVE_UNISTD_H
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| 29 | # include <unistd.h>
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| 30 | #endif
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| 31 |
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| 32 | #include "mstats.h"
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| 33 |
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| 34 | extern int malloc_free_blocks __P((int));
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| 35 |
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| 36 | extern struct _malstats _mstats;
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| 37 |
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| 38 | extern FILE *_imalloc_fopen __P((char *, char *, char *, char *, size_t));
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| 39 |
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| 40 | struct bucket_stats
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| 41 | malloc_bucket_stats (size)
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| 42 | int size;
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| 43 | {
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| 44 | struct bucket_stats v;
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| 45 |
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| 46 | v.nfree = 0;
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| 47 |
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| 48 | if (size < 0 || size >= NBUCKETS)
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| 49 | {
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| 50 | v.blocksize = 0;
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| 51 | v.nused = v.nmal = v.nmorecore = v.nlesscore = v.nsplit = 0;
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| 52 | return v;
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| 53 | }
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| 54 |
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| 55 | v.blocksize = 1 << (size + 3);
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| 56 | v.nused = _mstats.nmalloc[size];
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| 57 | v.nmal = _mstats.tmalloc[size];
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| 58 | v.nmorecore = _mstats.nmorecore[size];
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| 59 | v.nlesscore = _mstats.nlesscore[size];
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| 60 | v.nsplit = _mstats.nsplit[size];
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| 61 | v.ncoalesce = _mstats.ncoalesce[size];
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| 62 |
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| 63 | v.nfree = malloc_free_blocks (size); /* call back to malloc.c */
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| 64 |
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| 65 | return v;
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| 66 | }
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| 67 |
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| 68 | /* Return a copy of _MSTATS, with two additional fields filled in:
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| 69 | BYTESFREE is the total number of bytes on free lists. BYTESUSED
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| 70 | is the total number of bytes in use. These two fields are fairly
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| 71 | expensive to compute, so we do it only when asked to. */
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| 72 | struct _malstats
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| 73 | malloc_stats ()
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| 74 | {
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| 75 | struct _malstats result;
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| 76 | struct bucket_stats v;
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| 77 | register int i;
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| 78 |
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| 79 | result = _mstats;
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| 80 | result.bytesused = result.bytesfree = 0;
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| 81 | for (i = 0; i < NBUCKETS; i++)
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| 82 | {
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| 83 | v = malloc_bucket_stats (i);
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| 84 | result.bytesfree += v.nfree * v.blocksize;
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| 85 | result.bytesused += v.nused * v.blocksize;
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| 86 | }
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| 87 | return (result);
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| 88 | }
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| 89 |
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| 90 | static void
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| 91 | _print_malloc_stats (s, fp)
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