Commit | Line | Data |
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69040794 AB |
1 | /* |
2 | * blktrace output analysis: generate a timeline & gather statistics | |
3 | * | |
4 | * Copyright (C) 2006 Alan D. Brunelle <Alan.Brunelle@hp.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | * | |
20 | */ | |
21 | #include "globals.h" | |
22 | ||
23 | struct bno_dump { | |
24 | FILE *rfp, *wfp, *cfp; | |
25 | }; | |
26 | ||
69040794 AB |
27 | static FILE *bno_dump_open(__u32 device, char rwc) |
28 | { | |
29 | FILE *fp; | |
30 | char *oname; | |
31 | int mjr, mnr; | |
32 | ||
33 | mjr = device >> MINORBITS; | |
34 | mnr = device & ((1 << MINORBITS) - 1); | |
35 | ||
36 | oname = malloc(strlen(bno_dump_name) + 32); | |
37 | sprintf(oname, "%s_%03d,%03d_%c.dat", bno_dump_name, mjr, mnr, rwc); | |
99bb5ebc | 38 | if ((fp = my_fopen(oname, "w")) == NULL) |
69040794 AB |
39 | perror(oname); |
40 | else | |
c053af42 | 41 | add_file(fp, oname); |
69040794 AB |
42 | return fp; |
43 | } | |
44 | ||
c053af42 AB |
45 | static inline void bno_dump_write(FILE *fp, struct io *iop) |
46 | { | |
47 | fprintf(fp, "%15.9lf %lld %lld\n", BIT_TIME(iop->t.time), | |
48 | (long long)BIT_START(iop), (long long)BIT_END(iop)); | |
49 | } | |
50 | ||
51 | void *bno_dump_alloc(__u32 device) | |
69040794 AB |
52 | { |
53 | struct bno_dump *bdp; | |
54 | ||
55 | if (bno_dump_name == NULL) return NULL; | |
56 | ||
57 | bdp = malloc(sizeof(*bdp)); | |
58 | bdp->rfp = bno_dump_open(device, 'r'); | |
59 | bdp->wfp = bno_dump_open(device, 'w'); | |
60 | bdp->cfp = bno_dump_open(device, 'c'); | |
61 | ||
62 | return bdp; | |
63 | } | |
64 | ||
c053af42 | 65 | void bno_dump_free(void *param) |
69040794 | 66 | { |
69040794 AB |
67 | free(param); |
68 | } | |
69 | ||
69040794 AB |
70 | void bno_dump_add(void *handle, struct io *iop) |
71 | { | |
69040794 AB |
72 | struct bno_dump *bdp = handle; |
73 | ||
74 | if (bdp) { | |
c053af42 AB |
75 | FILE *fp = IOP_READ(iop) ? bdp->rfp : bdp->wfp; |
76 | ||
77 | if (fp) | |
78 | bno_dump_write(fp, iop); | |
69040794 AB |
79 | if (bdp->cfp) |
80 | bno_dump_write(bdp->cfp, iop); | |
81 | } | |
82 | } |