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 | ||
27 | static struct file_info *bno_dump_files = NULL; | |
28 | ||
29 | static FILE *bno_dump_open(__u32 device, char rwc) | |
30 | { | |
31 | FILE *fp; | |
32 | char *oname; | |
33 | int mjr, mnr; | |
34 | ||
35 | mjr = device >> MINORBITS; | |
36 | mnr = device & ((1 << MINORBITS) - 1); | |
37 | ||
38 | oname = malloc(strlen(bno_dump_name) + 32); | |
39 | sprintf(oname, "%s_%03d,%03d_%c.dat", bno_dump_name, mjr, mnr, rwc); | |
99bb5ebc | 40 | if ((fp = my_fopen(oname, "w")) == NULL) |
69040794 AB |
41 | perror(oname); |
42 | else | |
43 | add_file(&bno_dump_files, fp, oname); | |
44 | return fp; | |
45 | } | |
46 | ||
47 | void *bno_dump_init(__u32 device) | |
48 | { | |
49 | struct bno_dump *bdp; | |
50 | ||
51 | if (bno_dump_name == NULL) return NULL; | |
52 | ||
53 | bdp = malloc(sizeof(*bdp)); | |
54 | bdp->rfp = bno_dump_open(device, 'r'); | |
55 | bdp->wfp = bno_dump_open(device, 'w'); | |
56 | bdp->cfp = bno_dump_open(device, 'c'); | |
57 | ||
58 | return bdp; | |
59 | } | |
60 | ||
61 | void bno_dump_exit(void *param) | |
62 | { | |
63 | /* | |
64 | * Associated files will be auto-cleaned by bno_dump_clean | |
65 | */ | |
66 | free(param); | |
67 | } | |
68 | ||
69 | static inline void bno_dump_write(FILE *fp, struct io *iop) | |
70 | { | |
71 | fprintf(fp, "%15.9lf %lld %lld\n", | |
8b10aae0 | 72 | BIT_TIME(iop->t.time), |
69040794 AB |
73 | (long long)BIT_START(iop), (long long)BIT_END(iop)); |
74 | } | |
75 | ||
76 | void bno_dump_add(void *handle, struct io *iop) | |
77 | { | |
78 | # define RW_FP(bdp, iop) (IOP_READ(iop) ? bdp->rfp : bdp->wfp) | |
79 | struct bno_dump *bdp = handle; | |
80 | ||
81 | if (bdp) { | |
82 | if (RW_FP(bdp, iop)) | |
83 | bno_dump_write(RW_FP(bdp, iop), iop); | |
84 | if (bdp->cfp) | |
85 | bno_dump_write(bdp->cfp, iop); | |
86 | } | |
87 | } | |
88 | ||
89 | void bno_dump_clean(void) | |
90 | { | |
91 | clean_files(&bno_dump_files); | |
92 | } |