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/* Copyright (C) 2017 Robert Roth
This file is part of LibGTop.
Contributed by Robert Roth <robert.roth.off@gmail.com>, February 2017.
LibGTop 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.
LibGTop 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 LibGTop; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef __GLIBTOP_PROCDISKIO_H__
#define __GLIBTOP_PROCDISKIO_H__
#include <glibtop.h>
#include <glibtop/global.h>
G_BEGIN_DECLS
#define GLIBTOP_PROC_DISKIO_RCHAR 0
#define GLIBTOP_PROC_DISKIO_WCHAR 1
#define GLIBTOP_PROC_DISKIO_RBYTES 2
#define GLIBTOP_PROC_DISKIO_WBYTES 3
#define GLIBTOP_MAX_PROC_TIME 3
typedef struct _glibtop_proc_diskio glibtop_proc_diskio;
/* Time section */
/**
* glibtop_proc_diskio:
* @rchar: The number of bytes which this task has caused to be read from storage. This
* is simply the sum of bytes which this process passed to read() and pread(), also including tty IO,
* and it is unaffected by whether or not actual physical disk IO was required.
* @wchar: The number of bytes which this task has caused, or shall cause to be written
* to disk. Similar caveats apply here as with rchar.
* @rbytes: Attempt to count the number of bytes which this process really did cause to
* be fetched from the storage layer. Done at the submit_bio() level, so it is
* accurate for block-backed filesystems.
* @wbytes: Attempt to count the number of bytes which this process caused to be sent to
* the storage layer. This is done at page-dirtying time.
*
* Process disk io data filled by glibtop_get_proc_diskio().
*
*/
struct _glibtop_proc_diskio
{
/*< private >*/
guint64 flags;
/*< public >*/
guint64 rchar;
guint64 wchar;
guint64 rbytes;
guint64 wbytes;
};
void glibtop_get_proc_diskio (glibtop_proc_diskio *buf, pid_t pid);
#if GLIBTOP_SUID_PROC_DISKIO
#define glibtop_get_proc_diskio_r glibtop_get_proc_diskio_p
#else
#define glibtop_get_proc_diskio_r glibtop_get_proc_diskio_s
#endif
void glibtop_get_proc_diskio_l (glibtop *server, glibtop_proc_diskio *buf, pid_t pid);
#if GLIBTOP_SUID_PROC_DISKIO
void _glibtop_init_proc_diskio_p (glibtop *server);
void glibtop_get_proc_diskio_p (glibtop *server, glibtop_proc_diskio *buf, pid_t pid);
#else
void _glibtop_init_proc_diskio_s (glibtop *server);
void glibtop_get_proc_diskio_s (glibtop *server, glibtop_proc_diskio *buf, pid_t pid);
#endif
G_END_DECLS
#endif
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