673 lines
43 KiB
HTML
673 lines
43 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<meta name="generator" content="HTML Tidy, see www.w3.org">
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<link type="text/css" rel="stylesheet" href="style.css"><!-- Generated by The Open Group's rhtm tool v1.2.1 -->
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<!-- Copyright (c) 2001 The Open Group, All Rights Reserved -->
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<title>Codes</title>
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</head>
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<body bgcolor="white">
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<basefont size="3">
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<center><font size="2"><br>
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The Open Group Base Specifications Issue 6<br>
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technically identical to IEEE Std 1003.1-2001<br>
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Copyright © 2001 The IEEE and The Open Group</font></center>
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<hr size="2" noshade>
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<center>
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<i>This help file is not part of the standard, but is provided for information.</i>
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</center>
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<h4><a name="tag_01_05_01"></a>Codes</h4>
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<p>The codes and their meanings are as follows. See also <a href="#tag_01_05_02">Margin Code Notation</a> which includes a note of differences in convention
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between the printed PDF and HTML renditions of this standard.</p>
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<a name="ADV"> </a>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">ADV</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> Advisory Information <img src="../images/opt-end.gif" alt="[Option End]"
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border="0"></span><br>
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The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
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<p>Where applicable, functions are marked with the ADV margin legend in the SYNOPSIS section. Where additional semantics apply to a
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function, the material is identified by use of the ADV margin legend.</p>
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<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
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<a name="AIO"> </a>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">AIO</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> Asynchronous Input and Output <img src="../images/opt-end.gif" alt=
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"[Option End]" border="0"></span><br>
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The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
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<p>Where applicable, functions are marked with the AIO margin legend in the SYNOPSIS section. Where additional semantics apply to a
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function, the material is identified by use of the AIO margin legend.</p>
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<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
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<a name="BAR"> </a>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">BAR</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> Barriers <img src="../images/opt-end.gif" alt="[Option End]" border=
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"0"></span><br>
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The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
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<p>Where applicable, functions are marked with the BAR margin legend in the SYNOPSIS section. Where additional semantics apply to a
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function, the material is identified by use of the BAR margin legend.</p>
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<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
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<a name="BE"> </a>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">BE</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> Batch Environment Services and Utilities <img src=
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"../images/opt-end.gif" alt="[Option End]" border="0"></span><br>
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The functionality described is optional.</p>
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<p>Where applicable, utilities are marked with the BE margin legend in the SYNOPSIS section. Where additional semantics apply to a
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utility, the material is identified by use of the BE margin legend.</p>
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<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
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<a name="CD"> </a>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">CD</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> C-Language Development Utilities <img src="../images/opt-end.gif" alt=
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"[Option End]" border="0"></span><br>
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The functionality described is optional.</p>
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<p>Where applicable, utilities are marked with the CD margin legend in the SYNOPSIS section. Where additional semantics apply to a
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utility, the material is identified by use of the CD margin legend.</p>
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<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
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<a name="CPT"> </a>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">CPT</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> Process CPU-Time Clocks <img src="../images/opt-end.gif" alt=
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"[Option End]" border="0"></span><br>
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The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
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<p>Where applicable, functions are marked with the CPT margin legend in the SYNOPSIS section. Where additional semantics apply to a
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function, the material is identified by use of the CPT margin legend.</p>
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<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
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<a name="CS"> </a>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">CS</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> Clock Selection <img src="../images/opt-end.gif" alt="[Option End]"
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border="0"></span><br>
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The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
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<p>Where applicable, functions are marked with the CS margin legend in the SYNOPSIS section. Where additional semantics apply to a
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function, the material is identified by use of the CS margin legend.</p>
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<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
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<a name="CX"> </a>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">CX</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> Extension to the ISO C standard <img src="../images/opt-end.gif"
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alt="[Option End]" border="0"></span><br>
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The functionality described is an extension to the ISO C standard. Application writers may make use of an extension as it is
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supported on all IEEE Std 1003.1-2001-conforming systems.</p>
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<p>With each function or header from the ISO C standard, a statement to the effect that ``any conflict is unintentional'' is
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included. That is intended to refer to a direct conflict. IEEE Std 1003.1-2001 acts in part as a profile of the
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ISO C standard, and it may choose to further constrain behaviors allowed to vary by the ISO C standard. Such limitations
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are not considered conflicts.</p>
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<p>Where additional semantics apply to a function or header, the material is identified by use of the CX margin legend.</p>
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<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
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<a name="FD"> </a>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">FD</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> FORTRAN Development Utilities <img src="../images/opt-end.gif" alt=
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"[Option End]" border="0"></span><br>
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The functionality described is optional.</p>
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<p>Where applicable, utilities are marked with the FD margin legend in the SYNOPSIS section. Where additional semantics apply to a
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utility, the material is identified by use of the FD margin legend.</p>
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<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
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<a name="FR"> </a>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">FR</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> FORTRAN Runtime Utilities <img src="../images/opt-end.gif" alt=
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"[Option End]" border="0"></span><br>
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The functionality described is optional.</p>
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<p>Where applicable, utilities are marked with the FR margin legend in the SYNOPSIS section. Where additional semantics apply to a
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utility, the material is identified by use of the FR margin legend.</p>
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<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
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<a name="FSC"> </a>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">FSC</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> File Synchronization <img src="../images/opt-end.gif" alt="[Option End]"
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border="0"></span><br>
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The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
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<p>Where applicable, functions are marked with the FSC margin legend in the SYNOPSIS section. Where additional semantics apply to a
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function, the material is identified by use of the FSC margin legend.</p>
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<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
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<a name="IP6"> </a>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">IP6</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> IPV6 <img src="../images/opt-end.gif" alt="[Option End]" border=
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"0"></span><br>
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The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
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<p>Where applicable, functions are marked with the IP6 margin legend in the SYNOPSIS section. Where additional semantics apply to a
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function, the material is identified by use of the IP6 margin legend.</p>
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<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
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<a name="MC1"> </a>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">MC1</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> Advisory Information and either Memory Mapped Files or Shared Memory
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Objects <img src="../images/opt-end.gif" alt="[Option End]" border="0"></span><br>
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The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
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<p>This is a shorthand notation for combinations of multiple option codes.</p>
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<p>Where applicable, functions are marked with the MC1 margin legend in the SYNOPSIS section. Where additional semantics apply to a
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function, the material is identified by use of the MC1 margin legend.</p>
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<p>Refer to <a href="#tag_01_05_02">Margin Code Notation</a> .</p>
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<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
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<a name="MC2"> </a>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">MC2</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> Memory Mapped Files, Shared Memory Objects, or Memory Protection <img
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src="../images/opt-end.gif" alt="[Option End]" border="0"></span><br>
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The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
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<p>This is a shorthand notation for combinations of multiple option codes.</p>
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<p>Where applicable, functions are marked with the MC2 margin legend in the SYNOPSIS section. Where additional semantics apply to a
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function, the material is identified by use of the MC2 margin legend.</p>
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<p>Refer to <a href="#tag_01_05_02">Margin Code Notation</a> .</p>
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<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
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<a name="MF"> </a>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">MF</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> Memory Mapped Files <img src="../images/opt-end.gif" alt="[Option End]"
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border="0"></span><br>
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The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
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<p>Where applicable, functions are marked with the MF margin legend in the SYNOPSIS section. Where additional semantics apply to a
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function, the material is identified by use of the MF margin legend.</p>
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<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
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<a name="ML"> </a>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">ML</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> Process Memory Locking <img src="../images/opt-end.gif" alt=
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"[Option End]" border="0"></span><br>
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The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
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<p>Where applicable, functions are marked with the ML margin legend in the SYNOPSIS section. Where additional semantics apply to a
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function, the material is identified by use of the ML margin legend.</p>
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<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
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<a name="MR"> </a>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">MR</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> Range Memory Locking <img src="../images/opt-end.gif" alt="[Option End]"
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border="0"></span><br>
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The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
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<p>Where applicable, functions are marked with the MLR margin legend in the SYNOPSIS section. Where additional semantics apply to a
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function, the material is identified by use of the MLR margin legend.</p>
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<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
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<a name="MON"> </a>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">MON</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> Monotonic Clock <img src="../images/opt-end.gif" alt="[Option End]"
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border="0"></span><br>
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The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
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<p>Where applicable, functions are marked with the MON margin legend in the SYNOPSIS section. Where additional semantics apply to a
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function, the material is identified by use of the MON margin legend.</p>
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<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
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<a name="MPR"> </a>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">MPR</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> Memory Protection <img src="../images/opt-end.gif" alt="[Option End]"
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border="0"></span><br>
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The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
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<p>Where applicable, functions are marked with the MPR margin legend in the SYNOPSIS section. Where additional semantics apply to a
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function, the material is identified by use of the MPR margin legend.</p>
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<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
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<a name="MSG"> </a>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">MSG</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> Message Passing <img src="../images/opt-end.gif" alt="[Option End]"
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border="0"></span><br>
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The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
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<p>Where applicable, functions are marked with the MSG margin legend in the SYNOPSIS section. Where additional semantics apply to a
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function, the material is identified by use of the MSG margin legend.</p>
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<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
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<a name="MX"> </a>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">MX</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> IEC 60559 Floating-Point Option <img src="../images/opt-end.gif" alt=
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"[Option End]" border="0"></span><br>
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The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
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<p>Where applicable, functions are marked with the MX margin legend in the SYNOPSIS section. Where additional semantics apply to a
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function, the material is identified by use of the MX margin legend.</p>
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<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
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<a name="OB"> </a>
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<a name="OB XSI"> </a>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">OB</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> Obsolescent <img src="../images/opt-end.gif" alt="[Option End]" border=
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"0"></span><br>
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The functionality described may be withdrawn in a future version of this volume of IEEE Std 1003.1-2001. Strictly
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Conforming POSIX Applications and Strictly Conforming XSI Applications shall not use obsolescent features.</p>
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<p>Where applicable, the material is identified by use of the OB margin legend.</p>
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<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
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<a name="OF"> </a>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">OF</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> Output Format Incompletely Specified <img src="../images/opt-end.gif"
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alt="[Option End]" border="0"></span><br>
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The functionality described is an XSI extension. The format of the output produced by the utility is not fully specified. It is
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therefore not possible to post-process this output in a consistent fashion. Typical problems include unknown length of strings and
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unspecified field delimiters.</p>
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<p>Where applicable, the material is identified by use of the OF margin legend.</p>
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<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
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<a name="OH"> </a>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">OH</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> Optional Header <img src="../images/opt-end.gif" alt="[Option End]"
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border="0"></span><br>
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In the SYNOPSIS section of some interfaces in the System Interfaces volume of IEEE Std 1003.1-2001 an included header is
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marked as in the following example:</p>
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<pre>
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<tt><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">OH</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0">
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#include <sys/types.h>
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<img src="../images/opt-end.gif" alt="[Option End]" border="0">
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</span>#include <grp.h>
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struct group *getgrnam(const char *name);
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</tt>
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</pre>
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<p>The OH margin legend indicates that the marked header is not required on XSI-conformant systems.</p>
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<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
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<a name="PIO"> </a>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">PIO</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> Prioritized Input and Output <img src="../images/opt-end.gif" alt=
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"[Option End]" border="0"></span><br>
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The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
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<p>Where applicable, functions are marked with the PIO margin legend in the SYNOPSIS section. Where additional semantics apply to a
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function, the material is identified by use of the PIO margin legend.</p>
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<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
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<a name="PS"> </a>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">PS</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> Process Scheduling <img src="../images/opt-end.gif" alt="[Option End]"
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border="0"></span><br>
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The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
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<p>Where applicable, functions are marked with the PS margin legend in the SYNOPSIS section. Where additional semantics apply to a
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function, the material is identified by use of the PS margin legend.</p>
|
|
|
|
<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
|
|
<a name="RS"> </a>
|
|
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">RS</a>]</tt><img src=
|
|
"../images/opt-start.gif" alt="[Option Start]" border="0"> Raw Sockets <img src="../images/opt-end.gif" alt="[Option End]" border=
|
|
"0"></span><br>
|
|
The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
|
|
|
|
<p>Where applicable, functions are marked with the RS margin legend in the SYNOPSIS section. Where additional semantics apply to a
|
|
function, the material is identified by use of the RS margin legend.</p>
|
|
|
|
<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
|
|
<a name="RTS"> </a>
|
|
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">RTS</a>]</tt><img src=
|
|
"../images/opt-start.gif" alt="[Option Start]" border="0"> Realtime Signals Extension <img src="../images/opt-end.gif" alt=
|
|
"[Option End]" border="0"></span><br>
|
|
The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
|
|
|
|
<p>Where applicable, functions are marked with the RTS margin legend in the SYNOPSIS section. Where additional semantics apply to a
|
|
function, the material is identified by use of the RTS margin legend.</p>
|
|
|
|
<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
|
|
<a name="SD"> </a>
|
|
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">SD</a>]</tt><img src=
|
|
"../images/opt-start.gif" alt="[Option Start]" border="0"> Software Development Utilities <img src="../images/opt-end.gif" alt=
|
|
"[Option End]" border="0"></span><br>
|
|
The functionality described is optional.</p>
|
|
|
|
<p>Where applicable, utilities are marked with the SD margin legend in the SYNOPSIS section. Where additional semantics apply to a
|
|
utility, the material is identified by use of the SD margin legend.</p>
|
|
|
|
<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
|
|
<a name="SEM"> </a>
|
|
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">SEM</a>]</tt><img src=
|
|
"../images/opt-start.gif" alt="[Option Start]" border="0"> Semaphores <img src="../images/opt-end.gif" alt="[Option End]" border=
|
|
"0"></span><br>
|
|
The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
|
|
|
|
<p>Where applicable, functions are marked with the SEM margin legend in the SYNOPSIS section. Where additional semantics apply to a
|
|
function, the material is identified by use of the SEM margin legend.</p>
|
|
|
|
<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
|
|
<a name="SHM"> </a>
|
|
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">SHM</a>]</tt><img src=
|
|
"../images/opt-start.gif" alt="[Option Start]" border="0"> Shared Memory Objects <img src="../images/opt-end.gif" alt=
|
|
"[Option End]" border="0"></span><br>
|
|
The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
|
|
|
|
<p>Where applicable, functions are marked with the SHM margin legend in the SYNOPSIS section. Where additional semantics apply to a
|
|
function, the material is identified by use of the SHM margin legend.</p>
|
|
|
|
<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
|
|
<a name="SIO"> </a>
|
|
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">SIO</a>]</tt><img src=
|
|
"../images/opt-start.gif" alt="[Option Start]" border="0"> Synchronized Input and Output <img src="../images/opt-end.gif" alt=
|
|
"[Option End]" border="0"></span><br>
|
|
The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
|
|
|
|
<p>Where applicable, functions are marked with the SIO margin legend in the SYNOPSIS section. Where additional semantics apply to a
|
|
function, the material is identified by use of the SIO margin legend.</p>
|
|
|
|
<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
|
|
<a name="SPI"> </a>
|
|
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">SPI</a>]</tt><img src=
|
|
"../images/opt-start.gif" alt="[Option Start]" border="0"> Spin Locks <img src="../images/opt-end.gif" alt="[Option End]" border=
|
|
"0"></span><br>
|
|
The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
|
|
|
|
<p>Where applicable, functions are marked with the SPI margin legend in the SYNOPSIS section. Where additional semantics apply to a
|
|
function, the material is identified by use of the SPI margin legend.</p>
|
|
|
|
<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
|
|
<a name="SPN"> </a>
|
|
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">SPN</a>]</tt><img src=
|
|
"../images/opt-start.gif" alt="[Option Start]" border="0"> Spawn <img src="../images/opt-end.gif" alt="[Option End]" border=
|
|
"0"></span><br>
|
|
The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
|
|
|
|
<p>Where applicable, functions are marked with the SPN margin legend in the SYNOPSIS section. Where additional semantics apply to a
|
|
function, the material is identified by use of the SPN margin legend.</p>
|
|
|
|
<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
|
|
<a name="SS"> </a>
|
|
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">SS</a>]</tt><img src=
|
|
"../images/opt-start.gif" alt="[Option Start]" border="0"> Process Sporadic Server <img src="../images/opt-end.gif" alt=
|
|
"[Option End]" border="0"></span><br>
|
|
The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
|
|
|
|
<p>Where applicable, functions are marked with the SS margin legend in the SYNOPSIS section. Where additional semantics apply to a
|
|
function, the material is identified by use of the SS margin legend.</p>
|
|
|
|
<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
|
|
<a name="TCT"> </a>
|
|
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">TCT</a>]</tt><img src=
|
|
"../images/opt-start.gif" alt="[Option Start]" border="0"> Thread CPU-Time Clocks <img src="../images/opt-end.gif" alt=
|
|
"[Option End]" border="0"></span><br>
|
|
The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
|
|
|
|
<p>Where applicable, functions are marked with the TCT margin legend in the SYNOPSIS section. Where additional semantics apply to a
|
|
function, the material is identified by use of the TCT margin legend.</p>
|
|
|
|
<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
|
|
<a name="TEF"> </a>
|
|
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">TEF</a>]</tt><img src=
|
|
"../images/opt-start.gif" alt="[Option Start]" border="0"> Trace Event Filter <img src="../images/opt-end.gif" alt="[Option End]"
|
|
border="0"></span><br>
|
|
The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
|
|
|
|
<p>Where applicable, functions are marked with the TEF margin legend in the SYNOPSIS section. Where additional semantics apply to a
|
|
function, the material is identified by use of the TEF margin legend.</p>
|
|
|
|
<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
|
|
<a name="THR"> </a>
|
|
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">THR</a>]</tt><img src=
|
|
"../images/opt-start.gif" alt="[Option Start]" border="0"> Threads <img src="../images/opt-end.gif" alt="[Option End]" border=
|
|
"0"></span><br>
|
|
The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
|
|
|
|
<p>Where applicable, functions are marked with the THR margin legend in the SYNOPSIS section. Where additional semantics apply to a
|
|
function, the material is identified by use of the THR margin legend.</p>
|
|
|
|
<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
|
|
<a name="TMO"> </a>
|
|
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">TMO</a>]</tt><img src=
|
|
"../images/opt-start.gif" alt="[Option Start]" border="0"> Timeouts <img src="../images/opt-end.gif" alt="[Option End]" border=
|
|
"0"></span><br>
|
|
The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
|
|
|
|
<p>Where applicable, functions are marked with the TMO margin legend in the SYNOPSIS section. Where additional semantics apply to a
|
|
function, the material is identified by use of the TMO margin legend.</p>
|
|
|
|
<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
|
|
<a name="TMR"> </a>
|
|
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">TMR</a>]</tt><img src=
|
|
"../images/opt-start.gif" alt="[Option Start]" border="0"> Timers <img src="../images/opt-end.gif" alt="[Option End]" border=
|
|
"0"></span><br>
|
|
The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
|
|
|
|
<p>Where applicable, functions are marked with the TMR margin legend in the SYNOPSIS section. Where additional semantics apply to a
|
|
function, the material is identified by use of the TMR margin legend.</p>
|
|
|
|
<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
|
|
<a name="TPI"> </a>
|
|
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">TPI</a>]</tt><img src=
|
|
"../images/opt-start.gif" alt="[Option Start]" border="0"> Thread Priority Inheritance <img src="../images/opt-end.gif" alt=
|
|
"[Option End]" border="0"></span><br>
|
|
The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
|
|
|
|
<p>Where applicable, functions are marked with the TPI margin legend in the SYNOPSIS section. Where additional semantics apply to a
|
|
function, the material is identified by use of the TPI margin legend.</p>
|
|
|
|
<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
|
|
<a name="TPP"> </a>
|
|
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">TPP</a>]</tt><img src=
|
|
"../images/opt-start.gif" alt="[Option Start]" border="0"> Thread Priority Protection <img src="../images/opt-end.gif" alt=
|
|
"[Option End]" border="0"></span><br>
|
|
The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
|
|
|
|
<p>Where applicable, functions are marked with the TPP margin legend in the SYNOPSIS section. Where additional semantics apply to a
|
|
function, the material is identified by use of the TPP margin legend.</p>
|
|
|
|
<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
|
|
<a name="TPS"> </a>
|
|
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">TPS</a>]</tt><img src=
|
|
"../images/opt-start.gif" alt="[Option Start]" border="0"> Thread Execution Scheduling <img src="../images/opt-end.gif" alt=
|
|
"[Option End]" border="0"></span><br>
|
|
The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
|
|
|
|
<p>Where applicable, functions are marked with the TPS margin legend for the SYNOPSIS section. Where additional semantics apply to
|
|
a function, the material is identified by use of the TPS margin legend.</p>
|
|
|
|
<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
|
|
<a name="TRC"> </a>
|
|
<a name="TRC TEF"> </a>
|
|
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">TRC</a>]</tt><img src=
|
|
"../images/opt-start.gif" alt="[Option Start]" border="0"> Trace <img src="../images/opt-end.gif" alt="[Option End]" border=
|
|
"0"></span><br>
|
|
The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
|
|
|
|
<p>Where applicable, functions are marked with the TRC margin legend in the SYNOPSIS section. Where additional semantics apply to a
|
|
function, the material is identified by use of the TRC margin legend.</p>
|
|
|
|
<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
|
|
<a name="TRI"> </a>
|
|
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">TRI</a>]</tt><img src=
|
|
"../images/opt-start.gif" alt="[Option Start]" border="0"> Trace Inherit <img src="../images/opt-end.gif" alt="[Option End]"
|
|
border="0"></span><br>
|
|
The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
|
|
|
|
<p>Where applicable, functions are marked with the TRI margin legend in the SYNOPSIS section. Where additional semantics apply to a
|
|
function, the material is identified by use of the TRI margin legend.</p>
|
|
|
|
<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
|
|
<a name="TRL"> </a>
|
|
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">TRL</a>]</tt><img src=
|
|
"../images/opt-start.gif" alt="[Option Start]" border="0"> Trace Log <img src="../images/opt-end.gif" alt="[Option End]" border=
|
|
"0"></span><br>
|
|
The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
|
|
|
|
<p>Where applicable, functions are marked with the TRL margin legend in the SYNOPSIS section. Where additional semantics apply to a
|
|
function, the material is identified by use of the TRL margin legend.</p>
|
|
|
|
<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
|
|
<a name="TSA"> </a>
|
|
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">TSA</a>]</tt><img src=
|
|
"../images/opt-start.gif" alt="[Option Start]" border="0"> Thread Stack Address Attribute <img src="../images/opt-end.gif" alt=
|
|
"[Option End]" border="0"></span><br>
|
|
The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
|
|
|
|
<p>Where applicable, functions are marked with the TSA margin legend for the SYNOPSIS section. Where additional semantics apply to
|
|
a function, the material is identified by use of the TSA margin legend.</p>
|
|
|
|
<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
|
|
<a name="TSF"> </a>
|
|
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">TSF</a>]</tt><img src=
|
|
"../images/opt-start.gif" alt="[Option Start]" border="0"> Thread-Safe Functions <img src="../images/opt-end.gif" alt=
|
|
"[Option End]" border="0"></span><br>
|
|
The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
|
|
|
|
<p>Where applicable, functions are marked with the TSF margin legend in the SYNOPSIS section. Where additional semantics apply to a
|
|
function, the material is identified by use of the TSF margin legend.</p>
|
|
|
|
<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
|
|
<a name="TSH"> </a>
|
|
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">TSH</a>]</tt><img src=
|
|
"../images/opt-start.gif" alt="[Option Start]" border="0"> Thread Process-Shared Synchronization <img src="../images/opt-end.gif"
|
|
alt="[Option End]" border="0"></span><br>
|
|
The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
|
|
|
|
<p>Where applicable, functions are marked with the TSH margin legend in the SYNOPSIS section. Where additional semantics apply to a
|
|
function, the material is identified by use of the TSH margin legend.</p>
|
|
|
|
<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
|
|
<a name="TSP"> </a>
|
|
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">TSP</a>]</tt><img src=
|
|
"../images/opt-start.gif" alt="[Option Start]" border="0"> Thread Sporadic Server <img src="../images/opt-end.gif" alt=
|
|
"[Option End]" border="0"></span><br>
|
|
The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
|
|
|
|
<p>Where applicable, functions are marked with the TSP margin legend in the SYNOPSIS section. Where additional semantics apply to a
|
|
function, the material is identified by use of the TSP margin legend.</p>
|
|
|
|
<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
|
|
<a name="TSS"> </a>
|
|
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">TSS</a>]</tt><img src=
|
|
"../images/opt-start.gif" alt="[Option Start]" border="0"> Thread Stack Address Size <img src="../images/opt-end.gif" alt=
|
|
"[Option End]" border="0"></span><br>
|
|
The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
|
|
|
|
<p>Where applicable, functions are marked with the TSS margin legend in the SYNOPSIS section. Where additional semantics apply to a
|
|
function, the material is identified by use of the TSS margin legend.</p>
|
|
|
|
<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
|
|
<a name="TYM"> </a>
|
|
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">TYM</a>]</tt><img src=
|
|
"../images/opt-start.gif" alt="[Option Start]" border="0"> Typed Memory Objects <img src="../images/opt-end.gif" alt="[Option End]"
|
|
border="0"></span><br>
|
|
The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
|
|
|
|
<p>Where applicable, functions are marked with the TYM margin legend in the SYNOPSIS section. Where additional semantics apply to a
|
|
function, the material is identified by use of the TYM margin legend.</p>
|
|
|
|
<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
|
|
<a name="UP"> </a>
|
|
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">UP</a>]</tt><img src=
|
|
"../images/opt-start.gif" alt="[Option Start]" border="0"> User Portability Utilities <img src="../images/opt-end.gif" alt=
|
|
"[Option End]" border="0"></span><br>
|
|
The functionality described is optional.</p>
|
|
|
|
<p>Where applicable, utilities are marked with the UP margin legend in the SYNOPSIS section. Where additional semantics apply to a
|
|
utility, the material is identified by use of the UP margin legend.</p>
|
|
|
|
<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
|
|
<a name="XSI"> </a>
|
|
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">XSI</a>]</tt><img src=
|
|
"../images/opt-start.gif" alt="[Option Start]" border="0"> Extension <img src="../images/opt-end.gif" alt="[Option End]" border=
|
|
"0"></span><br>
|
|
The functionality described is an XSI extension. Functionality marked XSI is also an extension to the ISO C standard.
|
|
Application writers may confidently make use of an extension on all systems supporting the X/Open System Interfaces Extension.</p>
|
|
|
|
<p>If an entire SYNOPSIS section is shaded and marked XSI, all the functionality described in that reference page is an extension.
|
|
See <a href="../basedefs/xbd_chap02.html#tag_02_01_04">XSI Conformance</a> .</p>
|
|
|
|
<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
|
|
<a name="XSR"> </a>
|
|
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">XSR</a>]</tt><img src=
|
|
"../images/opt-start.gif" alt="[Option Start]" border="0"> XSI STREAMS <img src="../images/opt-end.gif" alt="[Option End]" border=
|
|
"0"></span><br>
|
|
The functionality described is optional. The functionality described is also an extension to the ISO C standard.</p>
|
|
|
|
<p>Where applicable, functions are marked with the XSR margin legend in the SYNOPSIS section. Where additional semantics apply to a
|
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function, the material is identified by use of the XSR margin legend.</p>
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<hr size="2" noshade>
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<h4><a name="tag_01_05_02"></a>Margin Code Notation</h4>
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<p>Some of the functionality described in this standard depends on support of more than one option, or
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independently may depend on several options. The HTML rendition uses
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different conventions to the printed and PDF version of this standard:
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shading is used in SYNOPSIS and at the start of the DESCRIPTION text only;
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graphical tags are used to denote the start and end of optional text throughout
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the html text.</p>
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<p>
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The following notation for margin codes is used to denote the following cases.</p>
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<h5><a name="tag_01_05_02_01"></a>A Feature Dependent on One or Two Options</h5>
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<p>In this case, margin codes have a <space> separator; for example:</p>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">MF</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> This feature requires support for only the Memory Mapped Files option.
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<img src="../images/opt-end.gif" alt="[Option End]" border="0"></span></p>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">MF SHM</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> This feature requires support for both the Memory Mapped Files and the
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Shared Memory Objects options; that is, an application which uses this feature is portable only between implementations that
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provide both options. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></span></p>
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<h5><a name="tag_01_05_02_02"></a>A Feature Dependent on Either of the Options Denoted</h5>
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<p>In this case, margin codes have a <tt>'|'</tt> separator to denote the logical OR; for example:</p>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">MF|SHM</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> This feature is dependent on support for either the Memory Mapped Files
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option or the Shared Memory Objects option; that is, an application which uses this feature is portable between implementations
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that provide any (or all) of the options. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></span></p>
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<h5><a name="tag_01_05_02_03"></a>A Feature Dependent on More than Two Options</h5>
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<p>The following shorthand notations are used:</p>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">MC1</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> The MC1 margin code is shorthand for ADV ( MF | SHM ). Features which are
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marked with this margin code require support of the Advisory Information option and either the Memory Mapped Files or Shared Memory
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Objects option. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></span></p>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">MC2</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> The MC2 margin code is shorthand for MF | SHM | MPR. Features which are
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marked with this margin code require support of either the Memory Mapped Files, Shared Memory Objects, or Memory Protection
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options. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></span></p>
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<h5><a name="tag_01_05_02_04"></a>Large Sections Dependent on an Option</h5>
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<p>Where large sections of text are dependent on support for an option, a lead-in text block is provided and marked accordingly;
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for example:</p>
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<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">TRC</a>]</tt><img src=
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"../images/opt-start.gif" alt="[Option Start]" border="0"> This section describes extensions to support tracing of user
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applications. This functionality is dependent on support of the Trace option (and the rest of this section is not further marked
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for this option). <img src="../images/opt-end.gif" alt="[Option End]" border="0"></span></p>
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<center>
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<i>This help file is not part of the standard, but is provided for information.</i>
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</center>
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<hr size="2" noshade>
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<center><font size="2">
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UNIX ® is a registered Trademark of The Open Group.<br>
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POSIX ® is a registered Trademark of The IEEE.<br>
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Copyright © 2001 The IEEE and The Open Group, All Rights Reserved<br>
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</font></center>
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<hr size="2" noshade>
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</body>
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</html>
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