diff options
Diffstat (limited to 'btt/bno_dump.c')
-rw-r--r-- | btt/bno_dump.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/btt/bno_dump.c b/btt/bno_dump.c new file mode 100644 index 0000000..7365300 --- /dev/null +++ b/btt/bno_dump.c @@ -0,0 +1,82 @@ +/* + * blktrace output analysis: generate a timeline & gather statistics + * + * Copyright (C) 2006 Alan D. Brunelle <Alan.Brunelle@hp.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ +#include "globals.h" + +struct bno_dump { + FILE *rfp, *wfp, *cfp; +}; + +static FILE *bno_dump_open(__u32 device, char rwc) +{ + FILE *fp; + char *oname; + int mjr, mnr; + + mjr = device >> MINORBITS; + mnr = device & ((1 << MINORBITS) - 1); + + oname = malloc(strlen(bno_dump_name) + 32); + sprintf(oname, "%s_%03d,%03d_%c.dat", bno_dump_name, mjr, mnr, rwc); + if ((fp = my_fopen(oname, "w")) == NULL) + perror(oname); + else + add_file(fp, oname); + return fp; +} + +static inline void bno_dump_write(FILE *fp, struct io *iop) +{ + fprintf(fp, "%15.9lf %lld %lld\n", BIT_TIME(iop->t.time), + (long long)BIT_START(iop), (long long)BIT_END(iop)); +} + +void *bno_dump_alloc(__u32 device) +{ + struct bno_dump *bdp; + + if (bno_dump_name == NULL) return NULL; + + bdp = malloc(sizeof(*bdp)); + bdp->rfp = bno_dump_open(device, 'r'); + bdp->wfp = bno_dump_open(device, 'w'); + bdp->cfp = bno_dump_open(device, 'c'); + + return bdp; +} + +void bno_dump_free(void *param) +{ + free(param); +} + +void bno_dump_add(void *handle, struct io *iop) +{ + struct bno_dump *bdp = handle; + + if (bdp) { + FILE *fp = IOP_READ(iop) ? bdp->rfp : bdp->wfp; + + if (fp) + bno_dump_write(fp, iop); + if (bdp->cfp) + bno_dump_write(bdp->cfp, iop); + } +} |