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<a href="#camel-camel-operation.description" class="shortcut">Description</a>
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<div class="refentry">
<a name="camel-camel-operation"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
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<h2><span class="refentrytitle"><a name="camel-camel-operation.top_of_page"></a>camel-operation</span></h2>
<p>camel-operation</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<a name="camel-camel-operation.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">struct <a class="link" href="camel-camel-operation.html#CamelOperation" title="struct CamelOperation">CamelOperation</a>;
<span class="returnvalue">GCancellable</span> * <a class="link" href="camel-camel-operation.html#camel-operation-new" title="camel_operation_new ()">camel_operation_new</a> (<em class="parameter"><code><span class="type">void</span></code></em>);
<span class="returnvalue">void</span> <a class="link" href="camel-camel-operation.html#camel-operation-cancel" title="camel_operation_cancel ()">camel_operation_cancel</a> (<em class="parameter"><code><a class="link" href="camel-camel-operation.html#CamelOperation" title="struct CamelOperation"><span class="type">CamelOperation</span></a> *operation</code></em>);
<span class="returnvalue">void</span> <a class="link" href="camel-camel-operation.html#camel-operation-uncancel" title="camel_operation_uncancel ()">camel_operation_uncancel</a> (<em class="parameter"><code><a class="link" href="camel-camel-operation.html#CamelOperation" title="struct CamelOperation"><span class="type">CamelOperation</span></a> *operation</code></em>);
<span class="returnvalue">gboolean</span> <a class="link" href="camel-camel-operation.html#camel-operation-cancel-check" title="camel_operation_cancel_check ()">camel_operation_cancel_check</a> (<em class="parameter"><code><a class="link" href="camel-camel-operation.html#CamelOperation" title="struct CamelOperation"><span class="type">CamelOperation</span></a> *operation</code></em>);
<span class="returnvalue">gint</span> <a class="link" href="camel-camel-operation.html#camel-operation-cancel-fd" title="camel_operation_cancel_fd ()">camel_operation_cancel_fd</a> (<em class="parameter"><code><a class="link" href="camel-camel-operation.html#CamelOperation" title="struct CamelOperation"><span class="type">CamelOperation</span></a> *operation</code></em>);
struct <span class="returnvalue">PRFileDesc</span> * <a class="link" href="camel-camel-operation.html#camel-operation-cancel-prfd" title="camel_operation_cancel_prfd ()">camel_operation_cancel_prfd</a> (<em class="parameter"><code><a class="link" href="camel-camel-operation.html#CamelOperation" title="struct CamelOperation"><span class="type">CamelOperation</span></a> *operation</code></em>);
<span class="returnvalue">void</span> <a class="link" href="camel-camel-operation.html#camel-operation-push-message" title="camel_operation_push_message ()">camel_operation_push_message</a> (<em class="parameter"><code><span class="type">GCancellable</span> *cancellable</code></em>,
<em class="parameter"><code>const <span class="type">gchar</span> *format</code></em>,
<em class="parameter"><code>...</code></em>);
<span class="returnvalue">void</span> <a class="link" href="camel-camel-operation.html#camel-operation-pop-message" title="camel_operation_pop_message ()">camel_operation_pop_message</a> (<em class="parameter"><code><span class="type">GCancellable</span> *cancellable</code></em>);
<span class="returnvalue">void</span> <a class="link" href="camel-camel-operation.html#camel-operation-progress" title="camel_operation_progress ()">camel_operation_progress</a> (<em class="parameter"><code><span class="type">GCancellable</span> *cancellable</code></em>,
<em class="parameter"><code><span class="type">gint</span> percent</code></em>);
</pre>
</div>
<div class="refsect1">
<a name="camel-camel-operation.description"></a><h2>Description</h2>
<p>
</p>
</div>
<div class="refsect1">
<a name="camel-camel-operation.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="CamelOperation"></a><h3>struct CamelOperation</h3>
<pre class="programlisting">struct CamelOperation {
GCancellable parent;
CamelOperationPrivate *priv;
};
</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="camel-operation-new"></a><h3>camel_operation_new ()</h3>
<pre class="programlisting"><span class="returnvalue">GCancellable</span> * camel_operation_new (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>
Create a new camel operation handle. Camel operation handles can
be used in a multithreaded application (or a single operation
handle can be used in a non threaded appliation) to cancel running
operations and to obtain notification messages of the internal
status of messages.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>A new operation handle.</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="camel-operation-cancel"></a><h3>camel_operation_cancel ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> camel_operation_cancel (<em class="parameter"><code><a class="link" href="camel-camel-operation.html#CamelOperation" title="struct CamelOperation"><span class="type">CamelOperation</span></a> *operation</code></em>);</pre>
<p>
Cancel a given operation. If <em class="parameter"><code>operation</code></em> is <code class="literal">NULL</code> then all outstanding
operations are cancelled.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>operation</code></em> :</span></p></td>
<td>a <a class="link" href="camel-camel-operation.html#CamelOperation" title="struct CamelOperation"><span class="type">CamelOperation</span></a>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="camel-operation-uncancel"></a><h3>camel_operation_uncancel ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> camel_operation_uncancel (<em class="parameter"><code><a class="link" href="camel-camel-operation.html#CamelOperation" title="struct CamelOperation"><span class="type">CamelOperation</span></a> *operation</code></em>);</pre>
<p>
Uncancel a cancelled operation.
</p>
<p>
This is useful, if e.g. you need to do some cleaning up where a
cancellation lying around in the same thread will abort any
processing.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>operation</code></em> :</span></p></td>
<td>a <a class="link" href="camel-camel-operation.html#CamelOperation" title="struct CamelOperation"><span class="type">CamelOperation</span></a>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="camel-operation-cancel-check"></a><h3>camel_operation_cancel_check ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span> camel_operation_cancel_check (<em class="parameter"><code><a class="link" href="camel-camel-operation.html#CamelOperation" title="struct CamelOperation"><span class="type">CamelOperation</span></a> *operation</code></em>);</pre>
<p>
Check if cancellation has been applied to <em class="parameter"><code>operation</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>operation</code></em> :</span></p></td>
<td>a <a class="link" href="camel-camel-operation.html#CamelOperation" title="struct CamelOperation"><span class="type">CamelOperation</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<code class="literal">TRUE</code> if the operation has been cancelled</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="camel-operation-cancel-fd"></a><h3>camel_operation_cancel_fd ()</h3>
<pre class="programlisting"><span class="returnvalue">gint</span> camel_operation_cancel_fd (<em class="parameter"><code><a class="link" href="camel-camel-operation.html#CamelOperation" title="struct CamelOperation"><span class="type">CamelOperation</span></a> *operation</code></em>);</pre>
<p>
Retrieve a file descriptor that can be waited on (select, or poll)
for read, to asynchronously detect cancellation.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>operation</code></em> :</span></p></td>
<td>a <a class="link" href="camel-camel-operation.html#CamelOperation" title="struct CamelOperation"><span class="type">CamelOperation</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The fd, or -1 if cancellation has not been registered
for this thread.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="camel-operation-cancel-prfd"></a><h3>camel_operation_cancel_prfd ()</h3>
<pre class="programlisting">struct <span class="returnvalue">PRFileDesc</span> * camel_operation_cancel_prfd (<em class="parameter"><code><a class="link" href="camel-camel-operation.html#CamelOperation" title="struct CamelOperation"><span class="type">CamelOperation</span></a> *operation</code></em>);</pre>
<p>
Retrieve a file descriptor that can be waited on (select, or poll)
for read, to asynchronously detect cancellation.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>operation</code></em> :</span></p></td>
<td>a <a class="link" href="camel-camel-operation.html#CamelOperation" title="struct CamelOperation"><span class="type">CamelOperation</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The fd, or <code class="literal">NULL</code> if cancellation has not been registered
for this thread.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="camel-operation-push-message"></a><h3>camel_operation_push_message ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> camel_operation_push_message (<em class="parameter"><code><span class="type">GCancellable</span> *cancellable</code></em>,
<em class="parameter"><code>const <span class="type">gchar</span> *format</code></em>,
<em class="parameter"><code>...</code></em>);</pre>
<p>
Call this function to describe an operation being performed.
Call <a class="link" href="camel-camel-operation.html#camel-operation-progress" title="camel_operation_progress ()"><code class="function">camel_operation_progress()</code></a> to report progress on the operation.
Call <a class="link" href="camel-camel-operation.html#camel-operation-pop-message" title="camel_operation_pop_message ()"><code class="function">camel_operation_pop_message()</code></a> when the operation is complete.
</p>
<p>
This function only works if <em class="parameter"><code>cancellable</code></em> is a <a class="link" href="camel-camel-operation.html#CamelOperation" title="struct CamelOperation"><span class="type">CamelOperation</span></a> cast as a
<span class="type">GCancellable</span>. If <em class="parameter"><code>cancellable</code></em> is a plain <span class="type">GCancellable</span> or <code class="literal">NULL</code>, the
function does nothing and returns silently.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>cancellable</code></em> :</span></p></td>
<td>a <span class="type">GCancellable</span> or <code class="literal">NULL</code>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>format</code></em> :</span></p></td>
<td>a standard <code class="function">printf()</code> format string</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="camel-operation-pop-message"></a><h3>camel_operation_pop_message ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> camel_operation_pop_message (<em class="parameter"><code><span class="type">GCancellable</span> *cancellable</code></em>);</pre>
<p>
Pops the most recently pushed message.
</p>
<p>
This function only works if <em class="parameter"><code>cancellable</code></em> is a <a class="link" href="camel-camel-operation.html#CamelOperation" title="struct CamelOperation"><span class="type">CamelOperation</span></a> cast as a
<span class="type">GCancellable</span>. If <em class="parameter"><code>cancellable</code></em> is a plain <span class="type">GCancellable</span> or <code class="literal">NULL</code>, the
function does nothing and returns silently.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>cancellable</code></em> :</span></p></td>
<td>a <span class="type">GCancellable</span>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="camel-operation-progress"></a><h3>camel_operation_progress ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> camel_operation_progress (<em class="parameter"><code><span class="type">GCancellable</span> *cancellable</code></em>,
<em class="parameter"><code><span class="type">gint</span> percent</code></em>);</pre>
<p>
Report progress on the current operation. <em class="parameter"><code>percent</code></em> reports the current
percentage of completion, which should be in the range of 0 to 100.
</p>
<p>
This function only works if <em class="parameter"><code>cancellable</code></em> is a <a class="link" href="camel-camel-operation.html#CamelOperation" title="struct CamelOperation"><span class="type">CamelOperation</span></a> cast as a
<span class="type">GCancellable</span>. If <em class="parameter"><code>cancellable</code></em> is a plain <span class="type">GCancellable</span> or <code class="literal">NULL</code>, the
function does nothing and returns silently.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>cancellable</code></em> :</span></p></td>
<td>a <span class="type">GCancellable</span> or <code class="literal">NULL</code>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>percent</code></em> :</span></p></td>
<td>percent complete, 0 to 100.</td>
</tr>
</tbody>
</table></div>
</div>
</div>
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