procps/proc/vmstat.h
Jim Warner a05084f381 library: add chaining provisions to meminfo and vmstat
If a caller chooses to reduce the overhead of repeated
function calls, this commit provides for acquiring all
the desired information in just a single library call.

Signed-off-by: Jim Warner <james.warner@comcast.net>
2015-06-29 21:29:29 +10:00

56 lines
1.8 KiB
C

/*
* libprocps - Library to read proc filesystem
*
* Copyright (C) 1995 Martin Schulze <joey@infodrom.north.de>
* Copyright (C) 1996 Charles Blake <cblake@bbn.com>
* Copyright (C) 2003 Albert Cahalan
* Copyright (C) 2015 Craig Small <csmall@enc.com.au>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef PROC_VMSTAT_H
#define PROC_VMSTAT_H
#include <proc/procps.h>
__BEGIN_DECLS
enum vmstat_item {
PROCPS_VMSTAT_PGPGIN,
PROCPS_VMSTAT_PGPGOUT,
PROCPS_VMSTAT_PSWPIN,
PROCPS_VMSTAT_PSWPOUT
};
struct vmstat_result {
enum vmstat_item item;
unsigned long result;
struct vmstat_result *next;
};
struct procps_vmstat;
int procps_vmstat_new (struct procps_vmstat **info);
int procps_vmstat_read (struct procps_vmstat *info);
struct procps_vmstat *procps_vmstat_ref (struct procps_vmstat *info);
struct procps_vmstat *procps_vmstat_unref (struct procps_vmstat *info);
unsigned long procps_vmstat_get (struct procps_vmstat *info, enum vmstat_item item);
int procps_vmstat_get_chain (struct procps_vmstat *info, struct vmstat_result *item);
__END_DECLS
#endif