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<a href="#rhythmbox-rb-async-queue-watch.description" class="shortcut">Description</a>
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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="refsynopsisdiv">
<a name="rhythmbox-rb-async-queue-watch.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis"><span class="returnvalue">void</span> (<a class="link" href="rhythmbox-rb-async-queue-watch.html#RBAsyncQueueWatchFunc" title="RBAsyncQueueWatchFunc ()">*RBAsyncQueueWatchFunc</a>) (<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>);
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a> <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> (<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>);
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<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.
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<div class="refsect1">
<a name="rhythmbox-rb-async-queue-watch.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="RBAsyncQueueWatchFunc"></a><h3>RBAsyncQueueWatchFunc ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> (*RBAsyncQueueWatchFunc) (<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.
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<td><p><span class="term"><em class="parameter"><code>item</code></em> :</span></p></td>
<td>the item found in the queue</td>
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<td><p><span class="term"><em class="parameter"><code>data</code></em> :</span></p></td>
<td>user data specified when creating the watch</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.
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<td><p><span class="term"><em class="parameter"><code>queue</code></em> :</span></p></td>
<td>the <a href="/usr/share/gtk-doc/html/glib/glib-Asynchronous-Queues.html#GAsyncQueue"><span class="type">GAsyncQueue</span></a> to watch</td>
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<td><p><span class="term"><em class="parameter"><code>priority</code></em> :</span></p></td>
<td>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>
</td>
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<td><p><span class="term"><em class="parameter"><code>callback</code></em> :</span></p></td>
<td>callback to invoke when the queue is non-empty</td>
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<td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td>
<td>user data to pass to the callback</td>
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<td><p><span class="term"><em class="parameter"><code>notify</code></em> :</span></p></td>
<td>function to call to clean up the user data for the callback</td>
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<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>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</td>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>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>
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