| .\" 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 2015-08-08 "GNU" "Linux Programmer's Manual" |
| .SH NAME |
| raise \- send a signal to the caller |
| .SH SYNOPSIS |
| .nf |
| .B #include <signal.h> |
| .PP |
| .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 |
| .PP |
| .in +4n |
| .EX |
| kill(getpid(), sig); |
| .EE |
| .in |
| .PP |
| In a multithreaded program it is equivalent to |
| .PP |
| .in +4n |
| .EX |
| pthread_kill(pthread_self(), sig); |
| .EE |
| .in |
| .PP |
| If the signal causes a handler to be called, |
| .BR raise () |
| will return only after the signal handler has returned. |
| .SH RETURN VALUE |
| .BR raise () |
| returns 0 on success, and nonzero for failure. |
| .SH ATTRIBUTES |
| For an explanation of the terms used in this section, see |
| .BR attributes (7). |
| .TS |
| allbox; |
| lb lb lb |
| l l l. |
| Interface Attribute Value |
| T{ |
| .BR raise () |
| T} Thread safety MT-Safe |
| .TE |
| .SH CONFORMING TO |
| POSIX.1-2001, POSIX.1-2008, C89, C99. |
| .SH NOTES |
| Since version 2.3.3, glibc implements |
| .BR raise () |
| by calling |
| .BR tgkill (2), |
| .\" 2.3.2 used the obsolete tkill(), if available. |
| if the kernel supports that system call. |
| Older glibc versions implemented |
| .BR raise () |
| using |
| .BR kill (2). |
| .SH SEE ALSO |
| .BR getpid (2), |
| .BR kill (2), |
| .BR sigaction (2), |
| .BR signal (2), |
| .BR pthread_kill (3), |
| .BR signal (7) |