projects / blktrace.git / blame
| Commit | Line | Data |
|---|---|---|
| 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); | |
| 40 | if ((fp = fopen(oname, "w")) == NULL) | |
| 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 | } |