raise(3) — Linux manual page

raise(3)                Library Functions Manual                raise(3)

NAME

       raise - send a signal to the caller

LIBRARY

       Standard C library (libc, -lc)

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 │
       └─────────────────────────────────────┴───────────────┴─────────┘

STANDARDS

       C11, POSIX.1-2008.

HISTORY

       POSIX.1-2001, C89.

       Since glibc 2.3.3, raise() is implemented 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

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Linux man-pages 6.9.1          2024-05-02                       raise(3)

Pages that refer to this page: sigaction(2), signal(2), sigprocmask(2), abort(3), gsignal(3), pthread_kill(3), sigset(3), sigvec(3), signal(7), signal-safety(7)

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