Name

raise — send a signal to the caller

Synopsis

        #include <signal.h>
int raise( int sig);
 

DESCRIPTION

The raise() function sends a signal to the calling process or thread. In a single-threaded program it is equivalent to

kill(getpid(), sig);

In a multithreaded program it is equivalent to

pthread_kill(pthread_self(), sig);

If the signal causes a handler to be called, raise() will return only after the signal handler has returned.

RETURN VALUE

raise() returns 0 on success, and nonzero for failure.

ATTRIBUTES

For an explanation of the terms used in this section, see attributes(7).

Interface Attribute Value
raise() Thread safety MT-Safe

CONFORMING TO

POSIX.1-2001, POSIX.1-2008, C89, C99.

NOTES

Since version 2.3.3, glibc implements raise() by calling tgkill(2), if the kernel supports that system call. Older glibc versions implemented raise() using kill(2).

SEE ALSO

getpid(2), kill(2), sigaction(2), signal(2), pthread_kill(3), signal(7)

COLOPHON

This page is part of release 4.16 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man−pages/.


  Copyright (c) 1993 by Thomas Koenig (ig25rz.uni-karlsruhe.de)
and Copyright (C) 2008 Michael Kerrisk <mtk.manpagesgmail.com>

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Modified Sat Jul 24 18:40:56 1993 by Rik Faith (faithcs.unc.edu)
Modified 1995 by Mike Battersby (mibdeakin.edu.au)