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).

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 4.15 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/.