1<h2>etap_trace_thread</h2> 2<hr> 3<p> 4<strong>Function</strong> - Set a thread's ETAP trace status. 5<h3>SYNOPSIS</h3> 6<pre> 7<strong>#include<mach/etap.h></strong> 8 9<strong>kern_return_t etap_trace_thread</strong> 10 <strong>(thread_act_t</strong> <var>target_thread</var>, 11 <strong>boolean_t</strong> <var>active</var><strong>);</strong> 12</pre> 13<h3>PARAMETERS</h3> 14<dl> 15<p> 16<dt> <var>target_thread</var> 17<dd> 18The port of the thread who's ETAP trace status will be toggled. 19<p> 20<dt> <var>active</var> 21<dd> 22The boolean value (either TRUE or FALSE) stating whether the thread's 23ETAP trace status will be activated or not. Passing TRUE will enable 24the thread's trace status and FALSE will deactivate it. 25</dl> 26<h3>DESCRIPTION</h3> 27<p> 28The <strong>etap_trace_thread</strong> system call is used to 29toggle the ETAP trace status of a thread. 30<h3>RETURN VALUES</h3> 31<dl> 32 <dt> <strong>KERN_SUCCESS</strong> 33 <dd> 34 The call was performed successfully. 35<p> 36 <dt> <strong>KERN_INVALID_ARGUMENT</strong> 37 <dd> 38 The value of <var>target_thread</var> does not name a valid thread. 39<p> 40 <dt> <strong>KERN_FAILURE</strong> 41 <dd> 42 ETAP is not configured in the kernel. 43</dl> 44<h3>RELATED INFORMATION</h3> 45<p> 46Functions: 47<a href="etap_probe.html"><strong>etap_probe</strong></a>, 48<a href="etap_trace_event.html"><strong>etap_trace_event</strong></a>, 49<a href="etap_get_info.html"><strong>etap_get_info</strong></a>. 50