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<!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) 2001-2003 The Open Group, All Rights Reserved --><title>posix_trace_eventset_add</title></head><body bgcolor="white"><script type="text/javascript" language="JavaScript" src="../jscript/codes.js"></script><basefont size="3"> <a name="posix_trace_eventset_add"></a> <a name="tag_03_466"></a><!-- posix_trace_eventset_add --> <!--header start--><center><font size="2">The Open Group Base Specifications Issue 6<br>IEEE Std 1003.1, 2003 Edition<br>Copyright © 2001-2003 The IEEE and The Open Group, All Rights reserved.</font></center><!--header end--><hr size="2" noshade><h4><a name="tag_03_466_01"></a>NAME</h4><blockquote>posix_trace_eventset_add, posix_trace_eventset_del, posix_trace_eventset_empty, posix_trace_eventset_fill,posix_trace_eventset_ismember - manipulate trace event type sets (<b>TRACING</b>)</blockquote><h4><a name="tag_03_466_02"></a>SYNOPSIS</h4><blockquote class="synopsis"><div class="box"><code><tt><sup>[<a href="javascript:open_code('TRC TEF')">TRC TEF</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border="0"> #include <<a href="../basedefs/trace.h.html">trace.h</a>><br><br> int posix_trace_eventset_add(trace_event_id_t</tt> <i>event_id</i><tt>,<br> trace_event_set_t *</tt><i>set</i><tt>);<br> int posix_trace_eventset_del(trace_event_id_t</tt> <i>event_id</i><tt>,<br> trace_event_set_t *</tt><i>set</i><tt>);<br> int posix_trace_eventset_empty(trace_event_set_t *</tt><i>set</i><tt>);<br> int posix_trace_eventset_fill(trace_event_set_t *</tt><i>set</i><tt>, int</tt> <i>what</i><tt>);<br> int posix_trace_eventset_ismember(trace_event_id_t</tt> <i>event_id</i><tt>,<br> const trace_event_set_t *restrict</tt> <i>set</i><tt>, int *restrict</tt><i>ismember</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_466_03"></a>DESCRIPTION</h4><blockquote><p>These primitives manipulate sets of trace event types. They operate on data objects addressable by the application, not on thecurrent trace event filter of any trace stream.</p><p>The <i>posix_trace_eventset_add</i>() and <i>posix_trace_eventset_del</i>() functions, respectively, shall add or delete theindividual trace event type specified by the value of the argument <i>event_id</i> to or from the trace event type set pointed toby the argument <i>set</i>. Adding a trace event type already in the set or deleting a trace event type not in the set shall not beconsidered an error.</p><p>The <i>posix_trace_eventset_empty</i>() function shall initialize the trace event type set pointed to by the <i>set</i> argumentsuch that all trace event types defined, both system and user, shall be excluded from the set.</p><p>The <i>posix_trace_eventset_fill</i>() function shall initialize the trace event type set pointed to by the argument <i>set</i>,such that the set of trace event types defined by the argument <i>what</i> shall be included in the set. The value of the argument<i>what</i> shall consist of one of the following values, as defined in the <a href="../basedefs/trace.h.html"><i><trace.h></i></a> header:</p><dl compact><dt>POSIX_TRACE_WOPID_EVENTS</dt><dd><br>All the process-independent implementation-defined system trace event types are included in the set.</dd><dt>POSIX_TRACE_SYSTEM_EVENTS</dt><dd><br>All the implementation-defined system trace event types are included in the set, as are those defined inIEEE Std 1003.1-2001.</dd><dt>POSIX_TRACE_ALL_EVENTS</dt><dd><br>All trace event types defined, both system and user, are included in the set.</dd></dl><p>Applications shall call either <i>posix_trace_eventset_empty</i>() or <i>posix_trace_eventset_fill</i>() at least once for eachobject of type <b>trace_event_set_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 the <i>posix_trace_eventset_add</i>(), <i>posix_trace_eventset_del</i>(), or<i>posix_trace_eventset_ismember</i>() functions, the results are undefined.</p><p>The <i>posix_trace_eventset_ismember</i>() function shall test whether the trace event type specified by the value of theargument <i>event_id</i> is a member of the set pointed to by the argument <i>set</i>. The value returned in the object pointed toby <i>ismember</i> argument is zero if the trace event type identifier is not a member of the set and a value different from zeroif it is a member of the set.</p></blockquote><h4><a name="tag_03_466_04"></a>RETURN VALUE</h4><blockquote><p>Upon successful completion, these functions shall return a value of zero. Otherwise, they shall return the corresponding errornumber.</p></blockquote><h4><a name="tag_03_466_05"></a>ERRORS</h4><blockquote><p>These functions may fail if:</p><dl compact><dt>[EINVAL]</dt><dd>The value of one of the arguments is invalid.</dd></dl></blockquote><hr><div class="box"><em>The following sections are informative.</em></div><h4><a name="tag_03_466_06"></a>EXAMPLES</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_03_466_07"></a>APPLICATION USAGE</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_03_466_08"></a>RATIONALE</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_03_466_09"></a>FUTURE DIRECTIONS</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_03_466_10"></a>SEE ALSO</h4><blockquote><p><a href="posix_trace_set_filter.html"><i>posix_trace_set_filter</i>()</a> , <a href="posix_trace_trid_eventid_open.html"><i>posix_trace_trid_eventid_open</i>()</a> , the Base Definitions volume ofIEEE Std 1003.1-2001, <a href="../basedefs/trace.h.html"><i><trace.h></i></a></p></blockquote><h4><a name="tag_03_466_11"></a>CHANGE HISTORY</h4><blockquote><p>First released in Issue 6. Derived from IEEE Std 1003.1q-2000.</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>⌨️ 快捷键说明
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