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<a href="#rhythmbox-rb-async-queue-watch.description" class="shortcut">Description</a></span>
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<h2><span class="refentrytitle"><a name="rhythmbox-rb-async-queue-watch.top_of_page"></a>rb-async-queue-watch</span></h2>
<p>rb-async-queue-watch — GSource for watching a GAsyncQueue in the main loop</p>
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<div class="refsect1">
<a name="rhythmbox-rb-async-queue-watch.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
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<td class="function_type">
<span class="returnvalue">void</span>
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<td class="function_name">
<span class="c_punctuation">(</span><a class="link" href="rhythmbox-rb-async-queue-watch.html#RBAsyncQueueWatchFunc" title="RBAsyncQueueWatchFunc ()">*RBAsyncQueueWatchFunc</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
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<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a>
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<td class="function_name">
<a class="link" href="rhythmbox-rb-async-queue-watch.html#rb-async-queue-watch-new" title="rb_async_queue_watch_new ()">rb_async_queue_watch_new</a> <span class="c_punctuation">()</span>
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<div class="refsect1">
<a name="rhythmbox-rb-async-queue-watch.description"></a><h2>Description</h2>
<p>This provides a way to feed work items to the main loop using a <a href="/usr/share/gtk-doc/html/glib/glib-Asynchronous-Queues.html#GAsyncQueue"><span class="type">GAsyncQueue</span></a>
without polling it.</p>
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<div class="refsect1">
<a name="rhythmbox-rb-async-queue-watch.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="RBAsyncQueueWatchFunc"></a><h3>RBAsyncQueueWatchFunc ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
<span class="c_punctuation">(</span>*RBAsyncQueueWatchFunc<span class="c_punctuation">)</span> (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> item</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> data</code></em>);</pre>
<p>Callback to call when an item is found in the queue.</p>
<div class="refsect3">
<a name="RBAsyncQueueWatchFunc.parameters"></a><h4>Parameters</h4>
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<td class="parameter_name"><p>item</p></td>
<td class="parameter_description"><p>the item found in the queue</p></td>
<td class="parameter_annotations"> </td>
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<td class="parameter_name"><p>data</p></td>
<td class="parameter_description"><p>user data specified when creating the watch</p></td>
<td class="parameter_annotations"> </td>
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<div class="refsect2">
<a name="rb-async-queue-watch-new"></a><h3>rb_async_queue_watch_new ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a>
rb_async_queue_watch_new (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Asynchronous-Queues.html#GAsyncQueue"><span class="type">GAsyncQueue</span></a> *queue</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> priority</code></em>,
<em class="parameter"><code><a class="link" href="rhythmbox-rb-async-queue-watch.html#RBAsyncQueueWatchFunc" title="RBAsyncQueueWatchFunc ()"><span class="type">RBAsyncQueueWatchFunc</span></a> callback</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Datasets.html#GDestroyNotify"><span class="type">GDestroyNotify</span></a> notify</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-The-Main-Event-Loop.html#GMainContext"><span class="type">GMainContext</span></a> *context</code></em>);</pre>
<p>Creates a new <a href="/usr/share/gtk-doc/html/glib/glib-The-Main-Event-Loop.html#GSource"><span class="type">GSource</span></a> that triggers when the <a href="/usr/share/gtk-doc/html/glib/glib-Asynchronous-Queues.html#GAsyncQueue"><span class="type">GAsyncQueue</span></a> is
non-empty. This is used in rhythmbox to process queues within
<a class="link" href="RhythmDB.html" title="RhythmDB"><span class="type">RhythmDB</span></a> in the main thread without polling.</p>
<div class="refsect3">
<a name="rb-async-queue-watch-new.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
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<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
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<td class="parameter_name"><p>queue</p></td>
<td class="parameter_description"><p>the <a href="/usr/share/gtk-doc/html/glib/glib-Asynchronous-Queues.html#GAsyncQueue"><span class="type">GAsyncQueue</span></a> to watch</p></td>
<td class="parameter_annotations"> </td>
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<td class="parameter_name"><p>priority</p></td>
<td class="parameter_description"><p>priority value for the <a href="/usr/share/gtk-doc/html/glib/glib-The-Main-Event-Loop.html#GSource"><span class="type">GSource</span></a></p></td>
<td class="parameter_annotations"> </td>
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<td class="parameter_name"><p>callback</p></td>
<td class="parameter_description"><p>callback to invoke when the queue is non-empty</p></td>
<td class="parameter_annotations"> </td>
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<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data to pass to the callback</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>notify</p></td>
<td class="parameter_description"><p>function to call to clean up the user data for the callback</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>the <a href="/usr/share/gtk-doc/html/glib/glib-The-Main-Event-Loop.html#GMainContext"><span class="type">GMainContext</span></a> to attach the source to</p></td>
<td class="parameter_annotations"> </td>
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</tbody>
</table></div>
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<div class="refsect3">
<a name="rb-async-queue-watch-new.returns"></a><h4>Returns</h4>
<p> the ID of the new <a href="/usr/share/gtk-doc/html/glib/glib-The-Main-Event-Loop.html#GSource"><span class="type">GSource</span></a></p>
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<div class="refsect1">
<a name="rhythmbox-rb-async-queue-watch.other_details"></a><h2>Types and Values</h2>
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