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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 4.09 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/.



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