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:
Otherwise, the effect of the raise() function shall be equivalent
Upon successful completion, 0 shall be returned. Otherwise, a non-zero
value shall be returned and
errno shall be set to indicate the error.
The raise() function shall fail if:
The value of the sig argument is an invalid signal number.
The following sections are informative.
The term "thread" is an extension to the ISO C standard.
kill() , sigaction() , the Base Definitions volume of
IEEE Std 1003.1-2001, <signal.h>, <sys/types.h>
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