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-<h2>task_sample</h2>
-<hr>
-<p>
-<strong>Function</strong> - Sample the target task's thread program counters periodically.
-<h3>SYNOPSIS</h3>
-<pre>
-<strong>kern_return_t task_sample</strong>
- <strong>(task_t</strong> <var>sample_task</var>,
- <strong>mach_port_make_send_t</strong> <var>reply_port</var><strong>);</strong>
-</pre>
-<h3>PARAMETERS</h3>
-<dl>
-<p>
-<dt> <var>sample_task</var>
-<dd>
-[in task send right]
-Port for the task whose threads' PC are to be
-sampled.
-<p>
-<dt> <var>reply_port</var>
-<dd>
-[in sample receive (to be converted to send) right]
-Port to which PC sample buffers are sent. A value of <strong>MACH_PORT_NULL</strong>
-stops PC sampling for the task.
-</dl>
-<h3>DESCRIPTION</h3>
-<p>
-The <strong>task_sample</strong> function causes the program counter (PC) of the
-specified <var>sample_task</var> (actually, all of the threads within
-<var>sample_task</var>) to be sampled periodically (whenever one of the threads
-happens to be running at the time of the kernel's "hardclock" interrupt).
-The set of PC sample values obtained are saved in buffers which are sent to
-the specified <var>reply_port</var> in <strong>receive_samples</strong> messages.
-<h3>RETURN VALUES</h3>
-<p>
-Only generic errors apply.
-<h3>RELATED INFORMATION</h3>
-<p>
-Functions:
-<a href="thread_sample.html"><strong>thread_sample</strong></a>,
-<a href="receive_samples.html"><strong>receive_samples</strong></a>.