raise(3) — Linux manual page

raise(3)                 Library Functions Manual                raise(3)

NAME         top

       raise - send a signal to the caller

LIBRARY         top

       Standard C library (libc, -lc)

SYNOPSIS         top

       #include <signal.h>

       int raise(int sig);

DESCRIPTION         top

       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         top

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

ATTRIBUTES         top

       For an explanation of the terms used in this section, see
       attributes(7).
       ┌──────────────────────────────────────┬───────────────┬─────────┐
       │ Interface                            │ Attribute     │ Value   │
       ├──────────────────────────────────────┼───────────────┼─────────┤
       │ raise()                              │ Thread safety │ MT-Safe │
       └──────────────────────────────────────┴───────────────┴─────────┘

STANDARDS         top

       C11, POSIX.1-2008.

HISTORY         top

       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         top

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

COLOPHON         top

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Linux man-pages 6.15            2025-05-17                       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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