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.\"     @(#)pause.3	8.1 (Berkeley) 6/4/93
.\"
.Dd April 3, 2022
.Dt PAUSE 3
.Os
.Sh NAME
.Nm pause
.Nd stop until signal
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In unistd.h
.Ft int
.Fn pause void
.Sh DESCRIPTION
.Sy Pause is made obsolete by
.Xr sigsuspend 2 .
.Pp
The
.Fn pause
function
forces a process to pause until
a signal is received from either the
.Xr kill 2
function
or an interval timer.
(See
.Xr setitimer 2 . )
Upon termination of a signal handler started during a
.Fn pause ,
the
.Fn pause
call will return.
.Sh RETURN VALUES
Always returns \-1.
.Sh ERRORS
The
.Fn pause
function
always returns:
.Bl -tag -width Er
.It Bq Er EINTR
The call was interrupted.
.El
.Sh SEE ALSO
.Xr kill 2 ,
.Xr select 2 ,
.Xr sigsuspend 2
.Sh HISTORY
A
.Fn pause
system call first appeared in the Programmer's Workbench (PWB/UNIX)
and was then ported to
.At v7 .
It was reimplemeted as a wrapper around the
.Fn sigpause
and
.Fn sigblock
system calls in
.Bx 4.2 ,
and around the
.Xr sigsuspend 2
and
.Xr sigprocmask 2
system calls in
.Bx 4.3 Reno .