1RAISE(3)                   Linux Programmer's Manual                  RAISE(3)
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NAME

6       raise - send a signal to the caller
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SYNOPSIS

9       #include <signal.h>
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11       int raise(int sig);
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DESCRIPTION

14       The  raise()  function sends a signal to the calling process or thread.
15       In a single-threaded program it is equivalent to
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17           kill(getpid(), sig);
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19       In a multithreaded program it is equivalent to
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21           pthread_kill(pthread_self(), sig);
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23       If the signal causes a handler to be called, raise() will  return  only
24       after the signal handler has returned.
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RETURN VALUE

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

30       For  an  explanation  of  the  terms  used  in  this  section,  see at‐
31       tributes(7).
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33       ┌────────────────────────────────────────────┬───────────────┬─────────┐
34       │Interface                                   │ Attribute     │ Value   │
35       ├────────────────────────────────────────────┼───────────────┼─────────┤
36       │raise()                                     │ Thread safety │ MT-Safe │
37       └────────────────────────────────────────────┴───────────────┴─────────┘
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CONFORMING TO

40       POSIX.1-2001, POSIX.1-2008, C89, C99.
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NOTES

43       Since version 2.3.3, glibc implements raise() by calling tgkill(2),  if
44       the kernel supports that system call.  Older glibc versions implemented
45       raise() using kill(2).
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SEE ALSO

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

51       This page is part of release 5.12 of the Linux  man-pages  project.   A
52       description  of  the project, information about reporting bugs, and the
53       latest    version    of    this    page,    can     be     found     at
54       https://www.kernel.org/doc/man-pages/.
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58GNU                               2021-03-22                          RAISE(3)
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