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
31       attributes(7).
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33       ┌──────────┬───────────────┬─────────┐
34       │Interface │ Attribute     │ Value   │
35       ├──────────┼───────────────┼─────────┤
36       │raise()   │ Thread safety │ MT-Safe │
37       └──────────┴───────────────┴─────────┘

CONFORMING TO

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

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

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

50       This page is part of release 4.16 of the Linux  man-pages  project.   A
51       description  of  the project, information about reporting bugs, and the
52       latest    version    of    this    page,    can     be     found     at
53       https://www.kernel.org/doc/man-pages/.
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57GNU                               2015-08-08                          RAISE(3)
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