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/*
** Zabbix
** Copyright (C) 2001-2019 Zabbix SIA
**
** 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.
**/
#ifndef ZABBIX_DISKDEVICES_H
#define ZABBIX_DISKDEVICES_H
#ifdef _WINDOWS
# error "This module allowed only for Unix OS"
#endif
#include "sysinfo.h"
#define MAX_DISKDEVICES 1024
/* Disk device time to live: if disk statistics is being collected but not polled (using passive */
/* or active check) DISKDEVICE_TTL or more seconds then delete this disk from collector. */
/* Update interval for vfs.dev.read[] and vfs.dev.write[] items must be less than DISKDEVICE_TTL. */
#define DISKDEVICE_TTL (3 * SEC_PER_HOUR)
typedef struct c_single_diskdevice_data
{
char name[32];
int index;
/* Counter used to detect devices no longer polled and to delete them from collector. It is set */
/* to 0 when disk statistics is polled and incremented when disk statistics is updated. For */
/* example, value 3600 means that approximately 1 hour statistics was not polled for this disk. */
int ticks_since_polled;
time_t clock[MAX_COLLECTOR_HISTORY];
zbx_uint64_t r_sect[MAX_COLLECTOR_HISTORY];
zbx_uint64_t r_oper[MAX_COLLECTOR_HISTORY];
zbx_uint64_t r_byte[MAX_COLLECTOR_HISTORY];
zbx_uint64_t w_sect[MAX_COLLECTOR_HISTORY];
zbx_uint64_t w_oper[MAX_COLLECTOR_HISTORY];
zbx_uint64_t w_byte[MAX_COLLECTOR_HISTORY];
double r_sps[ZBX_AVG_COUNT];
double r_ops[ZBX_AVG_COUNT];
double r_bps[ZBX_AVG_COUNT];
double w_sps[ZBX_AVG_COUNT];
double w_ops[ZBX_AVG_COUNT];
double w_bps[ZBX_AVG_COUNT];
} ZBX_SINGLE_DISKDEVICE_DATA;
typedef struct c_diskdevices_data
{
int count; /* number of disks to collect statistics for */
int max_diskdev; /* number of "slots" for disk statistics */
ZBX_SINGLE_DISKDEVICE_DATA device[1]; /* more "slots" for disk statistics added dynamically */
} ZBX_DISKDEVICES_DATA;
#define DISKDEVICE_COLLECTOR_STARTED(collector) ((collector) && (collector)->diskstat_shmid != ZBX_NONEXISTENT_SHMID)
ZBX_SINGLE_DISKDEVICE_DATA *collector_diskdevice_get(const char *devname);
ZBX_SINGLE_DISKDEVICE_DATA *collector_diskdevice_add(const char *devname);
void collect_stats_diskdevices(void);
#endif
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