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.\"     from: @(#)sigpause.2	6.6 (Berkeley) 3/10/91
.\"	$Id: sigpause.3,v 1.4 1994/06/13 18:50:12 cgd Exp $
.\"
.Dd March 10, 1991
.Dt SIGPAUSE 3
.Os BSD 4
.Sh NAME
.Nm sigpause
.Nd atomically release blocked signals and wait for interrupt
.Sh SYNOPSIS
.Fd #include <sys/signal.h>
.Ft int
.Fn sigpause "int sigmask"
.Sh DESCRIPTION
.Sy This interface is made obsolete by
.Xr sigsuspend 2 .
.Pp
.Fn Sigpause
assigns 
.Fa sigmask
to the set of masked signals
and then waits for a signal to arrive;
on return the set of masked signals is restored.
.Fa Sigmask
is usually 0 to indicate that no
signals are to be blocked.
.Fn Sigpause
always terminates by being interrupted, returning -1 with
.Va errno
set to
.Dv EINTR
.Sh SEE ALSO
.Xr sigsuspend 2 ,
.Xr kill 2 ,
.Xr sigaction 2 ,
.Xr sigprocmask 2 ,
.Xr sigblock 2 ,
.Xr sigvec 2
.Sh HISTORY
The
.Fn sigpause
function call appeared in
.Bx 4.2
and has been deprecated.