Section: POSIX Programmer's Manual (3P)
This manual page is part of the POSIX Programmer's Manual.
The Linux implementation of this interface may differ (consult
the corresponding Linux manual page for details of Linux behavior),
or the interface may not be implemented on Linux.
--- send a signal to the executing process
int raise(int sig);
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.
function shall send the signal
to the executing
thread or process.
If a signal handler is called, the
function shall not return until after the signal handler does.
The effect of the
function shall be equivalent to calling:
Upon successful completion, 0 shall be returned. Otherwise, a
non-zero value shall be returned
shall be set to indicate the error.
function shall fail if:
The value of the
argument is an invalid signal number.
The following sections are informative.
The term ``thread'' is an extension to the ISO C standard.
The Base Definitions volume of POSIX.1-2017,
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
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