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/*
* Disk statistics types
* Copyright (c) 2004 Silicon Graphics, Inc. All Rights Reserved.
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#define DEVNAMEMAX 255 /* largest device name we allow */
/*
* Per-device statistics
*/
typedef struct diskstat {
__uint64_t read;
__uint64_t write;
__uint64_t read_bytes;
__uint64_t write_bytes;
__uint64_t read_time;
__uint64_t write_time;
__uint64_t blocksize;
char name[DEVNAMEMAX + 1];
} diskstat_t;
/*
* Global statistics.
*
* We avoid continually realloc'ing memory by keeping track
* of the maximum number of devices we've allocated space for
* so far, and only realloc new space if we go beyond that.
*/
typedef struct diskstats {
__uint64_t read;
__uint64_t write;
__uint64_t read_bytes;
__uint64_t write_bytes;
__uint64_t blkread;
__uint64_t blkwrite;
__uint64_t read_time;
__uint64_t write_time;
int highwater; /* largest number of devices seen so far */
diskstat_t *disks; /* space for highwater number of devices */
} diskstats_t;
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