RAISE(3P)                                           POSIX Programmer's Manual                                          RAISE(3P)



PROLOG
       This  manual  page is part of the POSIX Programmer's Manual.  The Linux implementation of this interface may differ (con-
       sult the corresponding Linux manual page for details of Linux behavior), or the  interface  may  not  be  implemented  on
       Linux.

NAME
       raise - send a signal to the executing process

SYNOPSIS
       #include <signal.h>

       int raise(int sig);


DESCRIPTION
       The  raise()  function shall send the signal sig to the executing  thread or process.  If a signal handler is called, the
       raise() function shall not return until after the signal handler does.

       If the implementation supports the Threads option, the effect of the raise() function shall be equivalent to calling:


              pthread_kill(pthread_self(), sig);

       Otherwise, the effect of the raise() function shall be equivalent to calling:


              kill(getpid(), sig);

RETURN VALUE
       Upon successful completion, 0 shall be returned. Otherwise, a non-zero value shall be returned  and errno shall be set to
       indicate the error.

ERRORS
       The raise() function shall fail if:

       EINVAL The value of the sig argument is an invalid signal number.


       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       None.

RATIONALE
       The term "thread" is an extension to the ISO C standard.

FUTURE DIRECTIONS
       None.

SEE ALSO
       kill(), sigaction(), the Base Definitions volume of IEEE Std 1003.1-2001, <signal.h>, <sys/types.h>

COPYRIGHT
       Portions  of  this  text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for
       Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6,  Copy-
       right (C) 2001-2003 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any
       discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open  Group
       Standard   is   the   referee   document.   The   original   Standard   can   be   obtained  online  at  http://www.open-
       group.org/unix/online.html .



IEEE/The Open Group                                           2003                                                     RAISE(3P)