149 lines
5.5 KiB
HTML
149 lines
5.5 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
|
|
<html>
|
|
<head>
|
|
<meta name="generator" content="HTML Tidy, see www.w3.org">
|
|
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
|
|
<link type="text/css" rel="stylesheet" href="style.css"><!-- Generated by The Open Group's rhtm tool v1.2.1 -->
|
|
<!-- Copyright (c) 2001 The Open Group, All Rights Reserved -->
|
|
<title>sigaddset</title>
|
|
</head>
|
|
<body bgcolor="white">
|
|
<script type="text/javascript" language="JavaScript" src="../jscript/codes.js">
|
|
</script>
|
|
|
|
<basefont size="3"> <a name="sigaddset"></a> <a name="tag_03_681"></a><!-- sigaddset -->
|
|
<!--header start-->
|
|
<center><font size="2">The Open Group Base Specifications Issue 6<br>
|
|
IEEE Std 1003.1-2001<br>
|
|
Copyright © 2001 The IEEE and The Open Group, All Rights reserved.</font></center>
|
|
|
|
<!--header end-->
|
|
<hr size="2" noshade>
|
|
<h4><a name="tag_03_681_01"></a>NAME</h4>
|
|
|
|
<blockquote>sigaddset - add a signal to a signal set</blockquote>
|
|
|
|
<h4><a name="tag_03_681_02"></a>SYNOPSIS</h4>
|
|
|
|
<blockquote class="synopsis">
|
|
<div class="box"><code><tt><sup>[<a href="javascript:open_code('CX')">CX</a>]</sup> <img src="../images/opt-start.gif" alt=
|
|
"[Option Start]" border="0"> #include <<a href="../basedefs/signal.h.html">signal.h</a>><br>
|
|
<br>
|
|
int sigaddset(sigset_t *</tt><i>set</i><tt>, int</tt> <i>signo</i><tt>); <img src="../images/opt-end.gif" alt="[Option End]"
|
|
border="0"></tt></code></div>
|
|
|
|
<tt><br>
|
|
</tt></blockquote>
|
|
|
|
<h4><a name="tag_03_681_03"></a>DESCRIPTION</h4>
|
|
|
|
<blockquote>
|
|
<p>The <i>sigaddset</i>() function adds the individual signal specified by the <i>signo</i> to the signal set pointed to by
|
|
<i>set</i>.</p>
|
|
|
|
<p>Applications shall call either <a href="../functions/sigemptyset.html"><i>sigemptyset</i>()</a> or <a href=
|
|
"../functions/sigfillset.html"><i>sigfillset</i>()</a> at least once for each object of type <b>sigset_t</b> prior to any other use
|
|
of that object. If such an object is not initialized in this way, but is nonetheless supplied as an argument to any of <a href=
|
|
"../functions/pthread_sigmask.html"><i>pthread_sigmask</i>()</a>, <a href="../functions/sigaction.html"><i>sigaction</i>()</a>,
|
|
<i>sigaddset</i>(), <a href="../functions/sigdelset.html"><i>sigdelset</i>()</a>, <a href=
|
|
"../functions/sigismember.html"><i>sigismember</i>()</a>, <a href="../functions/sigpending.html"><i>sigpending</i>()</a>, <a href=
|
|
"../functions/sigprocmask.html"><i>sigprocmask</i>()</a>, <a href="../functions/sigsuspend.html"><i>sigsuspend</i>()</a>, <a href=
|
|
"../functions/sigtimedwait.html"><i>sigtimedwait</i>()</a>, <a href="../functions/sigwait.html"><i>sigwait</i>()</a>, or <a href=
|
|
"../functions/sigwaitinfo.html"><i>sigwaitinfo</i>()</a>, the results are undefined.</p>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_03_681_04"></a>RETURN VALUE</h4>
|
|
|
|
<blockquote>
|
|
<p>Upon successful completion, <i>sigaddset</i>() shall return 0; otherwise, it shall return -1 and set <i>errno</i> to indicate
|
|
the error.</p>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_03_681_05"></a>ERRORS</h4>
|
|
|
|
<blockquote>
|
|
<p>The <i>sigaddset</i>() function may fail if:</p>
|
|
|
|
<dl compact>
|
|
<dt>[EINVAL]</dt>
|
|
|
|
<dd>The value of the <i>signo</i> argument is an invalid or unsupported signal number.</dd>
|
|
</dl>
|
|
</blockquote>
|
|
|
|
<hr>
|
|
<div class="box"><em>The following sections are informative.</em></div>
|
|
|
|
<h4><a name="tag_03_681_06"></a>EXAMPLES</h4>
|
|
|
|
<blockquote>
|
|
<p>None.</p>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_03_681_07"></a>APPLICATION USAGE</h4>
|
|
|
|
<blockquote>
|
|
<p>None.</p>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_03_681_08"></a>RATIONALE</h4>
|
|
|
|
<blockquote>
|
|
<p>None.</p>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_03_681_09"></a>FUTURE DIRECTIONS</h4>
|
|
|
|
<blockquote>
|
|
<p>None.</p>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_03_681_10"></a>SEE ALSO</h4>
|
|
|
|
<blockquote>
|
|
<p><a href="xsh_chap02_04.html#tag_02_04"><i>Signal Concepts</i></a> , <a href="sigaction.html"><i>sigaction</i>()</a> , <a href=
|
|
"sigdelset.html"><i>sigdelset</i>()</a> , <a href="sigemptyset.html"><i>sigemptyset</i>()</a> , <a href=
|
|
"sigfillset.html"><i>sigfillset</i>()</a> , <a href="sigismember.html"><i>sigismember</i>()</a> , <a href=
|
|
"sigpending.html"><i>sigpending</i>()</a> , <a href="sigprocmask.html"><i>sigprocmask</i>()</a> , <a href=
|
|
"sigsuspend.html"><i>sigsuspend</i>()</a> , the Base Definitions volume of IEEE Std 1003.1-2001, <a href=
|
|
"../basedefs/signal.h.html"><i><signal.h></i></a></p>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_03_681_11"></a>CHANGE HISTORY</h4>
|
|
|
|
<blockquote>
|
|
<p>First released in Issue 3. Included for alignment with the POSIX.1-1988 standard.</p>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_03_681_12"></a>Issue 5</h4>
|
|
|
|
<blockquote>
|
|
<p>The last paragraph of the DESCRIPTION was included as an APPLICATION USAGE note in previous issues.</p>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_03_681_13"></a>Issue 6</h4>
|
|
|
|
<blockquote>
|
|
<p>The DESCRIPTION is updated to avoid use of the term "must" for application requirements.</p>
|
|
|
|
<p>The SYNOPSIS is marked CX since the presence of this function in the <a href=
|
|
"../basedefs/signal.h.html"><i><signal.h></i></a> header is an extension over the ISO C standard.</p>
|
|
</blockquote>
|
|
|
|
<div class="box"><em>End of informative text.</em></div>
|
|
|
|
<hr>
|
|
<hr size="2" noshade>
|
|
<center><font size="2"><!--footer start-->
|
|
UNIX ® is a registered Trademark of The Open Group.<br>
|
|
POSIX ® is a registered Trademark of The IEEE.<br>
|
|
[ <a href="../mindex.html">Main Index</a> | <a href="../basedefs/contents.html">XBD</a> | <a href=
|
|
"../utilities/contents.html">XCU</a> | <a href="../functions/contents.html">XSH</a> | <a href="../xrat/contents.html">XRAT</a>
|
|
]</font></center>
|
|
|
|
<!--footer end-->
|
|
<hr size="2" noshade>
|
|
</body>
|
|
</html>
|
|
|