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, Copyright (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.opengroup.org/unix/online.html .