raise(3) [centos man page]

RAISE(3)						     Linux Programmer's Manual							  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.

CONFORMING TO

       C89, C99, POSIX.1-2001.

NOTES

       Since  version  2.3.3, glibc implements raise() by calling tgkill(2), if the kernel supports that system call.  Older glibc versions imple-
       mented 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 3.53 of the Linux man-pages project.  A description of the project, and information about reporting bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.

GNU
								    2012-04-20								  RAISE(3)

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 (consult the correspond-
       ing 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 Technol-
       ogy -- 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 .

IEEE
/The Open Group						       2003								 RAISE(3P)