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<a href="#libudev-udev-queue.synopsis" class="shortcut">Top</a>
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<a href="#libudev-udev-queue.description" class="shortcut">Description</a>
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<a name="libudev-udev-queue"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle"><a name="libudev-udev-queue.top_of_page"></a>udev_queue</span></h2>
<p>udev_queue — access to currently active events</p>
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<div class="refsynopsisdiv">
<a name="libudev-udev-queue.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">struct <a class="link" href="libudev-udev-queue.html#udev-queue" title="struct udev_queue">udev_queue</a>;
struct <a class="link" href="libudev-udev-queue.html#udev-queue" title="struct udev_queue"><span class="returnvalue">udev_queue</span></a> * <a class="link" href="libudev-udev-queue.html#udev-queue-ref" title="udev_queue_ref ()">udev_queue_ref</a> (<em class="parameter"><code><span class="type">struct udev_queue</span> *udev_queue</code></em>);
struct <a class="link" href="libudev-udev-queue.html#udev-queue" title="struct udev_queue"><span class="returnvalue">udev_queue</span></a> * <a class="link" href="libudev-udev-queue.html#udev-queue-unref" title="udev_queue_unref ()">udev_queue_unref</a> (<em class="parameter"><code><span class="type">struct udev_queue</span> *udev_queue</code></em>);
struct <a class="link" href="libudev-udev.html#udev" title="struct udev"><span class="returnvalue">udev</span></a> * <a class="link" href="libudev-udev-queue.html#udev-queue-get-udev" title="udev_queue_get_udev ()">udev_queue_get_udev</a> (<em class="parameter"><code><span class="type">struct udev_queue</span> *udev_queue</code></em>);
struct <a class="link" href="libudev-udev-queue.html#udev-queue" title="struct udev_queue"><span class="returnvalue">udev_queue</span></a> * <a class="link" href="libudev-udev-queue.html#udev-queue-new" title="udev_queue_new ()">udev_queue_new</a> (<em class="parameter"><code><span class="type">struct udev</span> *udev</code></em>);
<span class="returnvalue">int</span> <a class="link" href="libudev-udev-queue.html#udev-queue-get-udev-is-active" title="udev_queue_get_udev_is_active ()">udev_queue_get_udev_is_active</a> (<em class="parameter"><code><span class="type">struct udev_queue</span> *udev_queue</code></em>);
<span class="returnvalue">int</span> <a class="link" href="libudev-udev-queue.html#udev-queue-get-queue-is-empty" title="udev_queue_get_queue_is_empty ()">udev_queue_get_queue_is_empty</a> (<em class="parameter"><code><span class="type">struct udev_queue</span> *udev_queue</code></em>);
<span class="returnvalue">int</span> <a class="link" href="libudev-udev-queue.html#udev-queue-get-seqnum-is-finished" title="udev_queue_get_seqnum_is_finished ()">udev_queue_get_seqnum_is_finished</a> (<em class="parameter"><code><span class="type">struct udev_queue</span> *udev_queue</code></em>,
<em class="parameter"><code>unsigned long long <span class="type">int</span> seqnum</code></em>);
<span class="returnvalue">int</span> <a class="link" href="libudev-udev-queue.html#udev-queue-get-seqnum-sequence-is-finished" title="udev_queue_get_seqnum_sequence_is_finished ()">udev_queue_get_seqnum_sequence_is_finished</a>
(<em class="parameter"><code><span class="type">struct udev_queue</span> *udev_queue</code></em>,
<em class="parameter"><code>unsigned long long <span class="type">int</span> start</code></em>,
<em class="parameter"><code>unsigned long long <span class="type">int</span> end</code></em>);
struct <a class="link" href="libudev-udev-list.html#udev-list-entry" title="struct udev_list_entry"><span class="returnvalue">udev_list_entry</span></a> * <a class="link" href="libudev-udev-queue.html#udev-queue-get-queued-list-entry" title="udev_queue_get_queued_list_entry ()">udev_queue_get_queued_list_entry</a>
(<em class="parameter"><code><span class="type">struct udev_queue</span> *udev_queue</code></em>);
unsigned long long <span class="returnvalue">int</span> <a class="link" href="libudev-udev-queue.html#udev-queue-get-kernel-seqnum" title="udev_queue_get_kernel_seqnum ()">udev_queue_get_kernel_seqnum</a> (<em class="parameter"><code><span class="type">struct udev_queue</span> *udev_queue</code></em>);
unsigned long long <span class="returnvalue">int</span> <a class="link" href="libudev-udev-queue.html#udev-queue-get-udev-seqnum" title="udev_queue_get_udev_seqnum ()">udev_queue_get_udev_seqnum</a> (<em class="parameter"><code><span class="type">struct udev_queue</span> *udev_queue</code></em>);
<span class="returnvalue">int</span> <a class="link" href="libudev-udev-queue.html#udev-queue-get-fd" title="udev_queue_get_fd ()">udev_queue_get_fd</a> (<em class="parameter"><code><span class="type">struct udev_queue</span> *udev_queue</code></em>);
<span class="returnvalue">int</span> <a class="link" href="libudev-udev-queue.html#udev-queue-flush" title="udev_queue_flush ()">udev_queue_flush</a> (<em class="parameter"><code><span class="type">struct udev_queue</span> *udev_queue</code></em>);
</pre>
</div>
<div class="refsect1">
<a name="libudev-udev-queue.description"></a><h2>Description</h2>
<p>
This exports the current state of the udev processing queue.
</p>
</div>
<div class="refsect1">
<a name="libudev-udev-queue.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="udev-queue"></a><h3>struct udev_queue</h3>
<pre class="programlisting">struct udev_queue;</pre>
<p>
Opaque object representing the current event queue in the udev daemon.
</p>
</div>
<hr>
<div class="refsect2">
<a name="udev-queue-ref"></a><h3>udev_queue_ref ()</h3>
<pre class="programlisting">struct <a class="link" href="libudev-udev-queue.html#udev-queue" title="struct udev_queue"><span class="returnvalue">udev_queue</span></a> * udev_queue_ref (<em class="parameter"><code><span class="type">struct udev_queue</span> *udev_queue</code></em>);</pre>
<p>
Take a reference of a udev queue context.
</p>
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<td><p><span class="term"><em class="parameter"><code>udev_queue</code></em> :</span></p></td>
<td>udev queue context</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the same udev queue context.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="udev-queue-unref"></a><h3>udev_queue_unref ()</h3>
<pre class="programlisting">struct <a class="link" href="libudev-udev-queue.html#udev-queue" title="struct udev_queue"><span class="returnvalue">udev_queue</span></a> * udev_queue_unref (<em class="parameter"><code><span class="type">struct udev_queue</span> *udev_queue</code></em>);</pre>
<p>
Drop a reference of a udev queue context. If the refcount reaches zero,
the resources of the queue context will be released.
</p>
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<td><p><span class="term"><em class="parameter"><code>udev_queue</code></em> :</span></p></td>
<td>udev queue context</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td><span class="type">NULL</span></td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="udev-queue-get-udev"></a><h3>udev_queue_get_udev ()</h3>
<pre class="programlisting">struct <a class="link" href="libudev-udev.html#udev" title="struct udev"><span class="returnvalue">udev</span></a> * udev_queue_get_udev (<em class="parameter"><code><span class="type">struct udev_queue</span> *udev_queue</code></em>);</pre>
<p>
Retrieve the udev library context the queue context was created with.
</p>
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<td><p><span class="term"><em class="parameter"><code>udev_queue</code></em> :</span></p></td>
<td>udev queue context</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the udev library context.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="udev-queue-new"></a><h3>udev_queue_new ()</h3>
<pre class="programlisting">struct <a class="link" href="libudev-udev-queue.html#udev-queue" title="struct udev_queue"><span class="returnvalue">udev_queue</span></a> * udev_queue_new (<em class="parameter"><code><span class="type">struct udev</span> *udev</code></em>);</pre>
<p>
The initial refcount is 1, and needs to be decremented to
release the resources of the udev queue context.
</p>
<div class="variablelist"><table border="0" class="variablelist">
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<td><p><span class="term"><em class="parameter"><code>udev</code></em> :</span></p></td>
<td>udev library context</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the udev queue context, or <span class="type">NULL</span> on error.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="udev-queue-get-udev-is-active"></a><h3>udev_queue_get_udev_is_active ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span> udev_queue_get_udev_is_active (<em class="parameter"><code><span class="type">struct udev_queue</span> *udev_queue</code></em>);</pre>
<p>
Check if udev is active on the system.
</p>
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<td><p><span class="term"><em class="parameter"><code>udev_queue</code></em> :</span></p></td>
<td>udev queue context</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a flag indicating if udev is active.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="udev-queue-get-queue-is-empty"></a><h3>udev_queue_get_queue_is_empty ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span> udev_queue_get_queue_is_empty (<em class="parameter"><code><span class="type">struct udev_queue</span> *udev_queue</code></em>);</pre>
<p>
Check if udev is currently processing any events.
</p>
<div class="variablelist"><table border="0" class="variablelist">
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<col align="left" valign="top">
<col>
</colgroup>
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<td><p><span class="term"><em class="parameter"><code>udev_queue</code></em> :</span></p></td>
<td>udev queue context</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a flag indicating if udev is currently handling events.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="udev-queue-get-seqnum-is-finished"></a><h3>udev_queue_get_seqnum_is_finished ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span> udev_queue_get_seqnum_is_finished (<em class="parameter"><code><span class="type">struct udev_queue</span> *udev_queue</code></em>,
<em class="parameter"><code>unsigned long long <span class="type">int</span> seqnum</code></em>);</pre>
<p>
This function is deprecated, it just returns the result of
<a class="link" href="libudev-udev-queue.html#udev-queue-get-queue-is-empty" title="udev_queue_get_queue_is_empty ()"><code class="function">udev_queue_get_queue_is_empty()</code></a>.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
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<td><p><span class="term"><em class="parameter"><code>udev_queue</code></em> :</span></p></td>
<td>udev queue context</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>seqnum</code></em> :</span></p></td>
<td>sequence number</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a flag indicating if udev is currently handling events.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="udev-queue-get-seqnum-sequence-is-finished"></a><h3>udev_queue_get_seqnum_sequence_is_finished ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span> udev_queue_get_seqnum_sequence_is_finished
(<em class="parameter"><code><span class="type">struct udev_queue</span> *udev_queue</code></em>,
<em class="parameter"><code>unsigned long long <span class="type">int</span> start</code></em>,
<em class="parameter"><code>unsigned long long <span class="type">int</span> end</code></em>);</pre>
<p>
This function is deprecated, it just returns the result of
<a class="link" href="libudev-udev-queue.html#udev-queue-get-queue-is-empty" title="udev_queue_get_queue_is_empty ()"><code class="function">udev_queue_get_queue_is_empty()</code></a>.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>udev_queue</code></em> :</span></p></td>
<td>udev queue context</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>start</code></em> :</span></p></td>
<td>first event sequence number</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>end</code></em> :</span></p></td>
<td>last event sequence number</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a flag indicating if udev is currently handling events.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="udev-queue-get-queued-list-entry"></a><h3>udev_queue_get_queued_list_entry ()</h3>
<pre class="programlisting">struct <a class="link" href="libudev-udev-list.html#udev-list-entry" title="struct udev_list_entry"><span class="returnvalue">udev_list_entry</span></a> * udev_queue_get_queued_list_entry
(<em class="parameter"><code><span class="type">struct udev_queue</span> *udev_queue</code></em>);</pre>
<p>
This function is deprecated.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
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<td><p><span class="term"><em class="parameter"><code>udev_queue</code></em> :</span></p></td>
<td>udev queue context</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>NULL.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="udev-queue-get-kernel-seqnum"></a><h3>udev_queue_get_kernel_seqnum ()</h3>
<pre class="programlisting">unsigned long long <span class="returnvalue">int</span> udev_queue_get_kernel_seqnum (<em class="parameter"><code><span class="type">struct udev_queue</span> *udev_queue</code></em>);</pre>
<p>
This function is deprecated.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>udev_queue</code></em> :</span></p></td>
<td>udev queue context</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>0.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="udev-queue-get-udev-seqnum"></a><h3>udev_queue_get_udev_seqnum ()</h3>
<pre class="programlisting">unsigned long long <span class="returnvalue">int</span> udev_queue_get_udev_seqnum (<em class="parameter"><code><span class="type">struct udev_queue</span> *udev_queue</code></em>);</pre>
<p>
This function is deprecated.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>udev_queue</code></em> :</span></p></td>
<td>udev queue context</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>0.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="udev-queue-get-fd"></a><h3>udev_queue_get_fd ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span> udev_queue_get_fd (<em class="parameter"><code><span class="type">struct udev_queue</span> *udev_queue</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="udev-queue-flush"></a><h3>udev_queue_flush ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span> udev_queue_flush (<em class="parameter"><code><span class="type">struct udev_queue</span> *udev_queue</code></em>);</pre>
</div>
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