137 lines
4.7 KiB
HTML
137 lines
4.7 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>sched_get_priority_max</title>
|
|
</head>
|
|
<body bgcolor="white">
|
|
<script type="text/javascript" language="JavaScript" src="../jscript/codes.js">
|
|
</script>
|
|
|
|
<basefont size="3"> <a name="sched_get_priority_max"></a> <a name="tag_03_618"></a><!-- sched_get_priority_max -->
|
|
<!--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_618_01"></a>NAME</h4>
|
|
|
|
<blockquote>sched_get_priority_max, sched_get_priority_min - get priority limits (<b>REALTIME</b>)</blockquote>
|
|
|
|
<h4><a name="tag_03_618_02"></a>SYNOPSIS</h4>
|
|
|
|
<blockquote class="synopsis">
|
|
<div class="box"><code><tt><sup>[<a href="javascript:open_code('PS')">PS</a>]</sup> <img src="../images/opt-start.gif" alt=
|
|
"[Option Start]" border="0"> #include <<a href="../basedefs/sched.h.html">sched.h</a>><br>
|
|
<br>
|
|
int sched_get_priority_max(int</tt> <i>policy</i><tt>);<br>
|
|
int sched_get_priority_min(int</tt> <i>policy</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_618_03"></a>DESCRIPTION</h4>
|
|
|
|
<blockquote>
|
|
<p>The <i>sched_get_priority_max</i>() and <i>sched_get_priority_min</i>() functions shall return the appropriate maximum or
|
|
minimum, respectively, for the scheduling policy specified by <i>policy</i>.</p>
|
|
|
|
<p>The value of <i>policy</i> shall be one of the scheduling policy values defined in <a href=
|
|
"../basedefs/sched.h.html"><i><sched.h></i></a>.</p>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_03_618_04"></a>RETURN VALUE</h4>
|
|
|
|
<blockquote>
|
|
<p>If successful, the <i>sched_get_priority_max</i>() and <i>sched_get_priority_min</i>() functions shall return the appropriate
|
|
maximum or minimum values, respectively. If unsuccessful, they shall return a value of -1 and set <i>errno</i> to indicate the
|
|
error.</p>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_03_618_05"></a>ERRORS</h4>
|
|
|
|
<blockquote>
|
|
<p>The <i>sched_get_priority_max</i>() and <i>sched_get_priority_min</i>() functions shall fail if:</p>
|
|
|
|
<dl compact>
|
|
<dt>[EINVAL]</dt>
|
|
|
|
<dd>The value of the <i>policy</i> parameter does not represent a defined scheduling policy.</dd>
|
|
</dl>
|
|
</blockquote>
|
|
|
|
<hr>
|
|
<div class="box"><em>The following sections are informative.</em></div>
|
|
|
|
<h4><a name="tag_03_618_06"></a>EXAMPLES</h4>
|
|
|
|
<blockquote>
|
|
<p>None.</p>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_03_618_07"></a>APPLICATION USAGE</h4>
|
|
|
|
<blockquote>
|
|
<p>None.</p>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_03_618_08"></a>RATIONALE</h4>
|
|
|
|
<blockquote>
|
|
<p>None.</p>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_03_618_09"></a>FUTURE DIRECTIONS</h4>
|
|
|
|
<blockquote>
|
|
<p>None.</p>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_03_618_10"></a>SEE ALSO</h4>
|
|
|
|
<blockquote>
|
|
<p><a href="sched_getparam.html"><i>sched_getparam</i>()</a> , <a href="sched_setparam.html"><i>sched_setparam</i>()</a> , <a href=
|
|
"sched_getscheduler.html"><i>sched_getscheduler</i>()</a> , <a href="sched_rr_get_interval.html"><i>sched_rr_get_interval</i>()</a>
|
|
, <a href="sched_setscheduler.html"><i>sched_setscheduler</i>()</a> , the Base Definitions volume of
|
|
IEEE Std 1003.1-2001, <a href="../basedefs/sched.h.html"><i><sched.h></i></a></p>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_03_618_11"></a>CHANGE HISTORY</h4>
|
|
|
|
<blockquote>
|
|
<p>First released in Issue 5. Included for alignment with the POSIX Realtime Extension.</p>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_03_618_12"></a>Issue 6</h4>
|
|
|
|
<blockquote>
|
|
<p>These functions are marked as part of the Process Scheduling option.</p>
|
|
|
|
<p>The [ENOSYS] error condition has been removed as stubs need not be provided if an implementation does not support the Process
|
|
Scheduling option.</p>
|
|
|
|
<p>The [ESRCH] error condition has been removed since these functions do not take a <i>pid</i> argument.</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>
|
|
|