raise

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 5.03 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/.



GNU                               2015-08-08                          RAISE(3)