1*699cd480SApple OSS Distributions<h2>etap_trace_thread</h2> 2*699cd480SApple OSS Distributions<hr> 3*699cd480SApple OSS Distributions<p> 4*699cd480SApple OSS Distributions<strong>Function</strong> - Set a thread's ETAP trace status. 5*699cd480SApple OSS Distributions<h3>SYNOPSIS</h3> 6*699cd480SApple OSS Distributions<pre> 7*699cd480SApple OSS Distributions<strong>#include<mach/etap.h></strong> 8*699cd480SApple OSS Distributions 9*699cd480SApple OSS Distributions<strong>kern_return_t etap_trace_thread</strong> 10*699cd480SApple OSS Distributions <strong>(thread_act_t</strong> <var>target_thread</var>, 11*699cd480SApple OSS Distributions <strong>boolean_t</strong> <var>active</var><strong>);</strong> 12*699cd480SApple OSS Distributions</pre> 13*699cd480SApple OSS Distributions<h3>PARAMETERS</h3> 14*699cd480SApple OSS Distributions<dl> 15*699cd480SApple OSS Distributions<p> 16*699cd480SApple OSS Distributions<dt> <var>target_thread</var> 17*699cd480SApple OSS Distributions<dd> 18*699cd480SApple OSS DistributionsThe port of the thread who's ETAP trace status will be toggled. 19*699cd480SApple OSS Distributions<p> 20*699cd480SApple OSS Distributions<dt> <var>active</var> 21*699cd480SApple OSS Distributions<dd> 22*699cd480SApple OSS DistributionsThe boolean value (either TRUE or FALSE) stating whether the thread's 23*699cd480SApple OSS DistributionsETAP trace status will be activated or not. Passing TRUE will enable 24*699cd480SApple OSS Distributionsthe thread's trace status and FALSE will deactivate it. 25*699cd480SApple OSS Distributions</dl> 26*699cd480SApple OSS Distributions<h3>DESCRIPTION</h3> 27*699cd480SApple OSS Distributions<p> 28*699cd480SApple OSS DistributionsThe <strong>etap_trace_thread</strong> system call is used to 29*699cd480SApple OSS Distributionstoggle the ETAP trace status of a thread. 30*699cd480SApple OSS Distributions<h3>RETURN VALUES</h3> 31*699cd480SApple OSS Distributions<dl> 32*699cd480SApple OSS Distributions <dt> <strong>KERN_SUCCESS</strong> 33*699cd480SApple OSS Distributions <dd> 34*699cd480SApple OSS Distributions The call was performed successfully. 35*699cd480SApple OSS Distributions<p> 36*699cd480SApple OSS Distributions <dt> <strong>KERN_INVALID_ARGUMENT</strong> 37*699cd480SApple OSS Distributions <dd> 38*699cd480SApple OSS Distributions The value of <var>target_thread</var> does not name a valid thread. 39*699cd480SApple OSS Distributions<p> 40*699cd480SApple OSS Distributions <dt> <strong>KERN_FAILURE</strong> 41*699cd480SApple OSS Distributions <dd> 42*699cd480SApple OSS Distributions ETAP is not configured in the kernel. 43*699cd480SApple OSS Distributions</dl> 44*699cd480SApple OSS Distributions<h3>RELATED INFORMATION</h3> 45*699cd480SApple OSS Distributions<p> 46*699cd480SApple OSS DistributionsFunctions: 47*699cd480SApple OSS Distributions<a href="etap_probe.html"><strong>etap_probe</strong></a>, 48*699cd480SApple OSS Distributions<a href="etap_trace_event.html"><strong>etap_trace_event</strong></a>, 49*699cd480SApple OSS Distributions<a href="etap_get_info.html"><strong>etap_get_info</strong></a>. 50