59 lines
1.8 KiB
Groff
59 lines
1.8 KiB
Groff
|
.\" (C) Copyright 2016 Craig Small <csmall@enc.com.au>
|
||
|
|
.\"
|
||
|
|
.\" %%%LICENSE_START(LGPL_2.1+)
|
||
|
|
.\" This manual 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 manual 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
|
||
|
|
.\" %%%LICENSE_END
|
||
|
|
.\"
|
||
|
|
.TH PROCPS_UPTIME 3 2016-04-16 "libproc-2"
|
||
|
|
.\" Please adjust this date whenever revising the manpage.
|
||
|
|
.\"
|
||
|
|
.SH NAME
|
||
|
|
procps_uptime \-
|
||
|
|
provide the uptime and idle time in seconds
|
||
|
|
.SH SYNOPSIS
|
||
|
|
.B #include <proc/procps.h>
|
||
|
|
.sp
|
||
|
|
.BI "int procps_uptime(double * " uptime_secs ", double * " idle_secs ");"
|
||
|
|
.sp
|
||
|
|
Link with \fI\-lprocps\fP.
|
||
|
|
.SH DESCRIPTION
|
||
|
|
The function
|
||
|
|
.BR procps_uptime ()
|
||
|
|
fills the location of the two double points with the current sytem uptime
|
||
|
|
and idle time.
|
||
|
|
.SH RETURN VALUE
|
||
|
|
.BR procps_uptime ()
|
||
|
|
returns a positive integer which is the uptime on success. On failure, it
|
||
|
|
returns a negative integer to one of the values defined below.
|
||
|
|
.TP
|
||
|
|
.B -ERANGE
|
||
|
|
Unable to parse the uptime file.
|
||
|
|
.PP
|
||
|
|
.BR procps_uptime ()
|
||
|
|
may also return any (negated) value that \fBfopen\fR() may set errno to.
|
||
|
|
|
||
|
|
.SH FILES
|
||
|
|
.TP
|
||
|
|
.I /proc/uptime
|
||
|
|
The raw values for uptime and idle time.
|
||
|
|
|
||
|
|
.SH VERSIONS
|
||
|
|
.B procps_uptime()
|
||
|
|
first appeared in libproc-2 version 0.0.
|
||
|
|
|
||
|
|
.SH SEE ALSO
|
||
|
|
.BR fopen (3),
|
||
|
|
.BR proc (5).
|