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



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

NAME
       raise -- send a signal to the executing process

SYNOPSIS
       #include <signal.h>

       int raise(int sig);

DESCRIPTION
       The functionality described on this reference page is aligned with the
       ISO C standard. Any conflict between the requirements described here
       and the ISO C standard is unintentional. This volume of POSIX.1-2017
       defers to the ISO C standard.

       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.

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


           pthread_kill(pthread_self(), 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 POSIX.1-2017, <signal.h>, <sys_types.h>

COPYRIGHT
       Portions of this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1-2017, Standard for Information Technology --
       Portable Operating System Interface (POSIX), The Open Group Base
       Specifications Issue 7, 2018 Edition, Copyright (C) 2018 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 .

       Any typographical or formatting errors that appear in this page are
       most likely to have been introduced during the conversion of the source
       files to man page format. To report such errors, see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .



IEEE/The Open Group                  2017                             RAISE(3)
