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RAISE(3)                            Linux Programmer's Manual                            RAISE(3)

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 4.04 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 http://www.kernel.org/doc/man-pages/.

GNU                                         2015-08-08                                   RAISE(3)