.\" Copyright (c) 1993 by Thomas Koenig (ig25@rz.uni-karlsruhe.de)
.\" and Copyright (C) 2008 Michael Kerrisk <mtk.manpages@gmail.com>
.\"
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.\" Modified Sat Jul 24 18:40:56 1993 by Rik Faith (faith@cs.unc.edu)
.\" Modified 1995 by Mike Battersby (mib@deakin.edu.au)
.\"
.TH RAISE 3  2008-10-17 "GNU" "Linux Programmer's Manual"
.SH NAME
raise \- send a signal to the caller
.SH SYNOPSIS
.nf
.B #include <signal.h>
.sp
.BI "int raise(int " sig );
.fi
.SH DESCRIPTION
The
.BR raise ()
function sends a signal to the calling process or thread.
In a single-threaded program it is equivalent to
.sp
.in +4n
.nf
kill(getpid(), sig);
.fi
.in
.PP
In a multithreaded program it is equivalent to
.sp
.in +4n
.nf
pthread_kill(pthread_self(), sig);
.fi
.in
.PP
If the signal causes a handler to be called,
.BR raise ()
will only return after the signal handler has returned.
.SH "RETURN VALUE"
.BR raise ()
returns 0 on success, and non-zero for failure.
.SH "CONFORMING TO"
C89, C99, POSIX.1-2001.
.SH "SEE ALSO"
.BR getpid (2),
.BR kill (2),
.BR sigaction (2),
.BR signal (2),
.BR pthread_kill (3),
.BR signal (7)
.SH COLOPHON
This page is part of release 3.22 of the Linux
.I man-pages
project.
A description of the project,
and information about reporting bugs,
can be found at
http://www.kernel.org/doc/man-pages/.
