170 lines
6.8 KiB
HTML
170 lines
6.8 KiB
HTML
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<title>posix_trace_eventset_add</title>
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<basefont size="3"> <a name="posix_trace_eventset_add"></a> <a name="tag_03_466"></a><!-- posix_trace_eventset_add -->
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<!--header start-->
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<center><font size="2">The Open Group Base Specifications Issue 6<br>
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IEEE Std 1003.1-2001<br>
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Copyright © 2001 The IEEE and The Open Group, All Rights reserved.</font></center>
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<!--header end-->
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<hr size="2" noshade>
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<h4><a name="tag_03_466_01"></a>NAME</h4>
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<blockquote>posix_trace_eventset_add, posix_trace_eventset_del, posix_trace_eventset_empty, posix_trace_eventset_fill,
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posix_trace_eventset_ismember - manipulate trace event type sets (<b>TRACING</b>)</blockquote>
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<h4><a name="tag_03_466_02"></a>SYNOPSIS</h4>
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<blockquote class="synopsis">
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<div class="box"><code><tt><sup>[<a href="javascript:open_code('TRC TEF')">TRC TEF</a>]</sup> <img src="../images/opt-start.gif" alt=
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"[Option Start]" border="0"> #include <<a href="../basedefs/trace.h.html">trace.h</a>><br>
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<br>
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int posix_trace_eventset_add(trace_event_id_t</tt> <i>event_id</i><tt>,<br>
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trace_event_set_t *</tt><i>set</i><tt>);<br>
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int posix_trace_eventset_del(trace_event_id_t</tt> <i>event_id</i><tt>,<br>
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trace_event_set_t *</tt><i>set</i><tt>);<br>
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int posix_trace_eventset_empty(trace_event_set_t *</tt><i>set</i><tt>);<br>
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int posix_trace_eventset_fill(trace_event_set_t *</tt><i>set</i><tt>, int</tt> <i>what</i><tt>);<br>
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int posix_trace_eventset_ismember(trace_event_id_t</tt> <i>event_id</i><tt>,<br>
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const trace_event_set_t *restrict</tt> <i>set</i><tt>, int *restrict</tt>
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<i>ismember</i><tt>); <img src="../images/opt-end.gif" alt="[Option End]" border="0"></tt></code></div>
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<tt><br>
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</tt></blockquote>
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<h4><a name="tag_03_466_03"></a>DESCRIPTION</h4>
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<blockquote>
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<p>These primitives manipulate sets of trace event types. They operate on data objects addressable by the application, not on the
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current trace event filter of any trace stream.</p>
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<p>The <i>posix_trace_eventset_add</i>() and <i>posix_trace_eventset_del</i>() functions, respectively, shall add or delete the
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individual trace event type specified by the value of the argument <i>event_id</i> to or from the trace event type set pointed to
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by 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 be
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considered an error.</p>
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<p>The <i>posix_trace_eventset_empty</i>() function shall initialize the trace event type set pointed to by the <i>set</i> argument
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such that all trace event types defined, both system and user, shall be excluded from the set.</p>
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<p>The <i>posix_trace_eventset_fill</i>() function shall initialize the trace event type set pointed to by the argument <i>set</i>,
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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
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<i>what</i> shall consist of one of the following values, as defined in the <a href=
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"../basedefs/trace.h.html"><i><trace.h></i></a> header:</p>
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<dl compact>
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<dt>POSIX_TRACE_WOPID_EVENTS</dt>
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<dd><br>
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All the process-independent implementation-defined system trace event types are included in the set.</dd>
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<dt>POSIX_TRACE_SYSTEM_EVENTS</dt>
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<dd><br>
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All the implementation-defined system trace event types are included in the set, as are those defined in
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IEEE Std 1003.1-2001.</dd>
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<dt>POSIX_TRACE_ALL_EVENTS</dt>
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<dd><br>
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All trace event types defined, both system and user, are included in the set.</dd>
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</dl>
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<p>Applications shall call either <i>posix_trace_eventset_empty</i>() or <i>posix_trace_eventset_fill</i>() at least once for each
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object 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,
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but is nonetheless supplied as an argument to any of the <i>posix_trace_eventset_add</i>(), <i>posix_trace_eventset_del</i>(), or
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<i>posix_trace_eventset_ismember</i>() functions, the results are undefined.</p>
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<p>The <i>posix_trace_eventset_ismember</i>() function shall test whether the trace event type specified by the value of the
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argument <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 to
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by <i>ismember</i> argument is zero if the trace event type identifier is not a member of the set and a value different from zero
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if it is a member of the set.</p>
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</blockquote>
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<h4><a name="tag_03_466_04"></a>RETURN VALUE</h4>
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<blockquote>
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<p>Upon successful completion, these functions shall return a value of zero. Otherwise, they shall return the corresponding error
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number.</p>
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</blockquote>
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<h4><a name="tag_03_466_05"></a>ERRORS</h4>
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<blockquote>
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<p>These functions may fail if:</p>
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<dl compact>
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<dt>[EINVAL]</dt>
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<dd>The value of one of the arguments is invalid.</dd>
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</dl>
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</blockquote>
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<hr>
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<div class="box"><em>The following sections are informative.</em></div>
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<h4><a name="tag_03_466_06"></a>EXAMPLES</h4>
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<blockquote>
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<p>None.</p>
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</blockquote>
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<h4><a name="tag_03_466_07"></a>APPLICATION USAGE</h4>
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<blockquote>
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<p>None.</p>
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</blockquote>
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<h4><a name="tag_03_466_08"></a>RATIONALE</h4>
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<blockquote>
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<p>None.</p>
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</blockquote>
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<h4><a name="tag_03_466_09"></a>FUTURE DIRECTIONS</h4>
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<blockquote>
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<p>None.</p>
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</blockquote>
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<h4><a name="tag_03_466_10"></a>SEE ALSO</h4>
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<blockquote>
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<p><a href="posix_trace_set_filter.html"><i>posix_trace_set_filter</i>()</a> , <a href=
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"posix_trace_trid_eventid_open.html"><i>posix_trace_trid_eventid_open</i>()</a> , the Base Definitions volume of
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IEEE Std 1003.1-2001, <a href="../basedefs/trace.h.html"><i><trace.h></i></a></p>
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</blockquote>
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<h4><a name="tag_03_466_11"></a>CHANGE HISTORY</h4>
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<blockquote>
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<p>First released in Issue 6. Derived from IEEE Std 1003.1q-2000.</p>
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</blockquote>
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<div class="box"><em>End of informative text.</em></div>
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