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authorLeo Tenenbaum <pommicket@gmail.com>2018-08-20 21:12:06 -0400
committerLeo Tenenbaum <pommicket@gmail.com>2018-08-20 21:12:06 -0400
commit63e87c2d0c9d263f14c77b68f85c67d46ece82a9 (patch)
tree6260365cbf7d24f37d27669e8538227fcb72e243 /gtk+-mingw/share/gtk-doc/html/gio/GPollableOutputStream.html
parenta4460f6d9453bbd7e584937686449cef3e19f052 (diff)
Removed gtk+ docsHEADmaster
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-<a href="#GPollableOutputStream.synopsis" class="shortcut">Top</a>
-  | 
- <a href="#GPollableOutputStream.description" class="shortcut">Description</a>
-  | 
- <a href="#GPollableOutputStream.object-hierarchy" class="shortcut">Object Hierarchy</a>
-  | 
- <a href="#GPollableOutputStream.prerequisites" class="shortcut">Prerequisites</a>
-  | 
- <a href="#GPollableOutputStream.implementations" class="shortcut">Known Implementations</a>
-</td></tr>
-</table>
-<div class="refentry">
-<a name="GPollableOutputStream"></a><div class="titlepage"></div>
-<div class="refnamediv"><table width="100%"><tr>
-<td valign="top">
-<h2><span class="refentrytitle"><a name="GPollableOutputStream.top_of_page"></a>GPollableOutputStream</span></h2>
-<p>GPollableOutputStream — Interface for pollable output streams</p>
-</td>
-<td valign="top" align="right"></td>
-</tr></table></div>
-<div class="refsynopsisdiv">
-<a name="GPollableOutputStream.synopsis"></a><h2>Synopsis</h2>
-<pre class="synopsis">
-#include &lt;gio/gio.h&gt;
-
- <a class="link" href="GPollableOutputStream.html#GPollableOutputStream-struct" title="GPollableOutputStream">GPollableOutputStream</a>;
-struct <a class="link" href="GPollableOutputStream.html#GPollableOutputStreamInterface" title="struct GPollableOutputStreamInterface">GPollableOutputStreamInterface</a>;
-
-<a href="./../glib/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="GPollableOutputStream.html#g-pollable-output-stream-can-poll" title="g_pollable_output_stream_can_poll ()">g_pollable_output_stream_can_poll</a> (<em class="parameter"><code><a class="link" href="GPollableOutputStream.html" title="GPollableOutputStream"><span class="type">GPollableOutputStream</span></a> *stream</code></em>);
-<a href="./../glib/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="GPollableOutputStream.html#g-pollable-output-stream-is-writable" title="g_pollable_output_stream_is_writable ()">g_pollable_output_stream_is_writable</a>
- (<em class="parameter"><code><a class="link" href="GPollableOutputStream.html" title="GPollableOutputStream"><span class="type">GPollableOutputStream</span></a> *stream</code></em>);
-<a href="./../glib/glib/glib-The-Main-Event-Loop.html#GSource"><span class="returnvalue">GSource</span></a> * <a class="link" href="GPollableOutputStream.html#g-pollable-output-stream-create-source" title="g_pollable_output_stream_create_source ()">g_pollable_output_stream_create_source</a>
- (<em class="parameter"><code><a class="link" href="GPollableOutputStream.html" title="GPollableOutputStream"><span class="type">GPollableOutputStream</span></a> *stream</code></em>,
- <em class="parameter"><code><a class="link" href="GCancellable.html" title="GCancellable"><span class="type">GCancellable</span></a> *cancellable</code></em>);
-<a href="./../glib/glib/glib-Basic-Types.html#gssize"><span class="returnvalue">gssize</span></a> <a class="link" href="GPollableOutputStream.html#g-pollable-output-stream-write-nonblocking" title="g_pollable_output_stream_write_nonblocking ()">g_pollable_output_stream_write_nonblocking</a>
- (<em class="parameter"><code><a class="link" href="GPollableOutputStream.html" title="GPollableOutputStream"><span class="type">GPollableOutputStream</span></a> *stream</code></em>,
- <em class="parameter"><code>const <span class="type">void</span> *buffer</code></em>,
- <em class="parameter"><code><a href="./../glib/glib/glib-Basic-Types.html#gsize"><span class="type">gsize</span></a> count</code></em>,
- <em class="parameter"><code><a class="link" href="GCancellable.html" title="GCancellable"><span class="type">GCancellable</span></a> *cancellable</code></em>,
- <em class="parameter"><code><a href="./../glib/glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);
-</pre>
-</div>
-<div class="refsect1">
-<a name="GPollableOutputStream.object-hierarchy"></a><h2>Object Hierarchy</h2>
-<pre class="synopsis">
- GInterface
- +----GPollableOutputStream
-</pre>
-</div>
-<div class="refsect1">
-<a name="GPollableOutputStream.prerequisites"></a><h2>Prerequisites</h2>
-<p>
-GPollableOutputStream requires
- <a class="link" href="GOutputStream.html" title="GOutputStream">GOutputStream</a>.</p>
-</div>
-<div class="refsect1">
-<a name="GPollableOutputStream.implementations"></a><h2>Known Implementations</h2>
-<p>
-GPollableOutputStream is implemented by
- <a class="link" href="gio-GConverterOutputstream.html#GConverterOutputStream">GConverterOutputStream</a>, <a class="link" href="GMemoryOutputStream.html" title="GMemoryOutputStream">GMemoryOutputStream</a> and <a class="link" href="GUnixOutputStream.html" title="GUnixOutputStream">GUnixOutputStream</a>.</p>
-</div>
-<div class="refsect1">
-<a name="GPollableOutputStream.description"></a><h2>Description</h2>
-<p>
-<a class="link" href="GPollableOutputStream.html" title="GPollableOutputStream"><span class="type">GPollableOutputStream</span></a> is implemented by <a class="link" href="GOutputStream.html" title="GOutputStream"><span class="type">GOutputStream</span></a>s that
-can be polled for readiness to write. This can be used when
-interfacing with a non-GIO API that expects
-UNIX-file-descriptor-style asynchronous I/O rather than GIO-style.
-</p>
-</div>
-<div class="refsect1">
-<a name="GPollableOutputStream.details"></a><h2>Details</h2>
-<div class="refsect2">
-<a name="GPollableOutputStream-struct"></a><h3>GPollableOutputStream</h3>
-<pre class="programlisting">typedef struct _GPollableOutputStream GPollableOutputStream;</pre>
-<p>
-An interface for a <a class="link" href="GOutputStream.html" title="GOutputStream"><span class="type">GOutputStream</span></a> that can be polled for readability.
-</p>
-<p class="since">Since 2.28</p>
-</div>
-<hr>
-<div class="refsect2">
-<a name="GPollableOutputStreamInterface"></a><h3>struct GPollableOutputStreamInterface</h3>
-<pre class="programlisting">struct GPollableOutputStreamInterface {
- GTypeInterface g_iface;
-
- /* Virtual Table */
- gboolean (*can_poll) (GPollableOutputStream *stream);
-
- gboolean (*is_writable) (GPollableOutputStream *stream);
- GSource * (*create_source) (GPollableOutputStream *stream,
- GCancellable *cancellable);
- gssize (*write_nonblocking) (GPollableOutputStream *stream,
- const void *buffer,
- gsize count,
- GError **error);
-};
-</pre>
-<p>
-The interface for pollable output streams.
-</p>
-<p>
-The default implementation of <em class="parameter"><code>can_poll</code></em> always returns <a href="./../glib/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a>.
-</p>
-<p>
-The default implementation of <em class="parameter"><code>write_nonblocking</code></em> calls
-<a class="link" href="GPollableOutputStream.html#g-pollable-output-stream-is-writable" title="g_pollable_output_stream_is_writable ()"><code class="function">g_pollable_output_stream_is_writable()</code></a>, and then calls
-<a class="link" href="GOutputStream.html#g-output-stream-write" title="g_output_stream_write ()"><code class="function">g_output_stream_write()</code></a> if it returns <a href="./../glib/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a>. This means you only
-need to override it if it is possible that your <em class="parameter"><code>is_writable</code></em>
-implementation may return <a href="./../glib/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> when the stream is not actually
-writable.
-</p>
-<div class="variablelist"><table border="0">
-<col align="left" valign="top">
-<tbody>
-<tr>
-<td><p><span class="term"><a href="./../gobject/gobject/gobject-Type-Information.html#GTypeInterface"><span class="type">GTypeInterface</span></a> <em class="structfield"><code><a name="GPollableOutputStreamInterface.g-iface"></a>g_iface</code></em>;</span></p></td>
-<td>The parent interface.</td>
-</tr>
-<tr>
-<td><p><span class="term"><em class="structfield"><code><a name="GPollableOutputStreamInterface.can-poll"></a>can_poll</code></em> ()</span></p></td>
-<td>Checks if the <a class="link" href="GPollableOutputStream.html" title="GPollableOutputStream"><span class="type">GPollableOutputStream</span></a> instance is actually pollable</td>
-</tr>
-<tr>
-<td><p><span class="term"><em class="structfield"><code><a name="GPollableOutputStreamInterface.is-writable"></a>is_writable</code></em> ()</span></p></td>
-<td>Checks if the stream is writable</td>
-</tr>
-<tr>
-<td><p><span class="term"><em class="structfield"><code><a name="GPollableOutputStreamInterface.create-source"></a>create_source</code></em> ()</span></p></td>
-<td>Creates a <a href="./../glib/glib/glib-The-Main-Event-Loop.html#GSource"><span class="type">GSource</span></a> to poll the stream</td>
-</tr>
-<tr>
-<td><p><span class="term"><em class="structfield"><code><a name="GPollableOutputStreamInterface.write-nonblocking"></a>write_nonblocking</code></em> ()</span></p></td>
-<td>Does a non-blocking write or returns
-<a class="link" href="gio-GIOError.html#G-IO-ERROR-WOULD-BLOCK:CAPS"><code class="literal">G_IO_ERROR_WOULD_BLOCK</code></a>
-</td>
-</tr>
-</tbody>
-</table></div>
-<p class="since">Since 2.28</p>
-</div>
-<hr>
-<div class="refsect2">
-<a name="g-pollable-output-stream-can-poll"></a><h3>g_pollable_output_stream_can_poll ()</h3>
-<pre class="programlisting"><a href="./../glib/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> g_pollable_output_stream_can_poll (<em class="parameter"><code><a class="link" href="GPollableOutputStream.html" title="GPollableOutputStream"><span class="type">GPollableOutputStream</span></a> *stream</code></em>);</pre>
-<p>
-Checks if <em class="parameter"><code>stream</code></em> is actually pollable. Some classes may implement
-<a class="link" href="GPollableOutputStream.html" title="GPollableOutputStream"><span class="type">GPollableOutputStream</span></a> but have only certain instances of that
-class be pollable. If this method returns <a href="./../glib/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a>, then the behavior
-of other <a class="link" href="GPollableOutputStream.html" title="GPollableOutputStream"><span class="type">GPollableOutputStream</span></a> methods is undefined.
-</p>
-<p>
-For any given stream, the value returned by this method is constant;
-a stream cannot switch from pollable to non-pollable or vice versa.
-</p>
-<div class="variablelist"><table border="0">
-<col align="left" valign="top">
-<tbody>
-<tr>
-<td><p><span class="term"><em class="parameter"><code>stream</code></em> :</span></p></td>
-<td>a <a class="link" href="GPollableOutputStream.html" title="GPollableOutputStream"><span class="type">GPollableOutputStream</span></a>.</td>
-</tr>
-<tr>
-<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
-<td>
-<a href="./../glib/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>stream</code></em> is pollable, <a href="./../glib/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> if not.</td>
-</tr>
-</tbody>
-</table></div>
-<p class="since">Since 2.28</p>
-</div>
-<hr>
-<div class="refsect2">
-<a name="g-pollable-output-stream-is-writable"></a><h3>g_pollable_output_stream_is_writable ()</h3>
-<pre class="programlisting"><a href="./../glib/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> g_pollable_output_stream_is_writable
- (<em class="parameter"><code><a class="link" href="GPollableOutputStream.html" title="GPollableOutputStream"><span class="type">GPollableOutputStream</span></a> *stream</code></em>);</pre>
-<p>
-Checks if <em class="parameter"><code>stream</code></em> can be written.
-</p>
-<p>
-Note that some stream types may not be able to implement this 100%
-reliably, and it is possible that a call to <a class="link" href="GOutputStream.html#g-output-stream-write" title="g_output_stream_write ()"><code class="function">g_output_stream_write()</code></a>
-after this returns <a href="./../glib/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> would still block. To guarantee
-non-blocking behavior, you should always use
-<a class="link" href="GPollableOutputStream.html#g-pollable-output-stream-write-nonblocking" title="g_pollable_output_stream_write_nonblocking ()"><code class="function">g_pollable_output_stream_write_nonblocking()</code></a>, which will return a
-<a class="link" href="gio-GIOError.html#G-IO-ERROR-WOULD-BLOCK:CAPS"><code class="literal">G_IO_ERROR_WOULD_BLOCK</code></a> error rather than blocking.
-</p>
-<div class="variablelist"><table border="0">
-<col align="left" valign="top">
-<tbody>
-<tr>
-<td><p><span class="term"><em class="parameter"><code>stream</code></em> :</span></p></td>
-<td>a <a class="link" href="GPollableOutputStream.html" title="GPollableOutputStream"><span class="type">GPollableOutputStream</span></a>.</td>
-</tr>
-<tr>
-<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
-<td>
-<a href="./../glib/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>stream</code></em> is writable, <a href="./../glib/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> if not. If an error
-has occurred on <em class="parameter"><code>stream</code></em>, this will result in
-<a class="link" href="GPollableOutputStream.html#g-pollable-output-stream-is-writable" title="g_pollable_output_stream_is_writable ()"><code class="function">g_pollable_output_stream_is_writable()</code></a> returning <a href="./../glib/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a>, and the
-next attempt to write will return the error.</td>
-</tr>
-</tbody>
-</table></div>
-<p class="since">Since 2.28</p>
-</div>
-<hr>
-<div class="refsect2">
-<a name="g-pollable-output-stream-create-source"></a><h3>g_pollable_output_stream_create_source ()</h3>
-<pre class="programlisting"><a href="./../glib/glib/glib-The-Main-Event-Loop.html#GSource"><span class="returnvalue">GSource</span></a> * g_pollable_output_stream_create_source
- (<em class="parameter"><code><a class="link" href="GPollableOutputStream.html" title="GPollableOutputStream"><span class="type">GPollableOutputStream</span></a> *stream</code></em>,
- <em class="parameter"><code><a class="link" href="GCancellable.html" title="GCancellable"><span class="type">GCancellable</span></a> *cancellable</code></em>);</pre>
-<p>
-Creates a <a href="./../glib/glib/glib-The-Main-Event-Loop.html#GSource"><span class="type">GSource</span></a> that triggers when <em class="parameter"><code>stream</code></em> can be written, or
-<em class="parameter"><code>cancellable</code></em> is triggered or an error occurs. The callback on the
-source is of the <a class="link" href="gio-gpollableutils.html#GPollableSourceFunc" title="GPollableSourceFunc ()"><span class="type">GPollableSourceFunc</span></a> type.
-</p>
-<p>
-As with <a class="link" href="GPollableOutputStream.html#g-pollable-output-stream-is-writable" title="g_pollable_output_stream_is_writable ()"><code class="function">g_pollable_output_stream_is_writable()</code></a>, it is possible that
-the stream may not actually be writable even after the source
-triggers, so you should use <a class="link" href="GPollableOutputStream.html#g-pollable-output-stream-write-nonblocking" title="g_pollable_output_stream_write_nonblocking ()"><code class="function">g_pollable_output_stream_write_nonblocking()</code></a>
-rather than <a class="link" href="GOutputStream.html#g-output-stream-write" title="g_output_stream_write ()"><code class="function">g_output_stream_write()</code></a> from the callback.
-</p>
-<div class="variablelist"><table border="0">
-<col align="left" valign="top">
-<tbody>
-<tr>
-<td><p><span class="term"><em class="parameter"><code>stream</code></em> :</span></p></td>
-<td>a <a class="link" href="GPollableOutputStream.html" title="GPollableOutputStream"><span class="type">GPollableOutputStream</span></a>.</td>
-</tr>
-<tr>
-<td><p><span class="term"><em class="parameter"><code>cancellable</code></em> :</span></p></td>
-<td>a <a class="link" href="GCancellable.html" title="GCancellable"><span class="type">GCancellable</span></a>, or <a href="./../glib/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. <span class="annotation">[<acronym title="NULL is ok, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span>
-</td>
-</tr>
-<tr>
-<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
-<td>a new <a href="./../glib/glib/glib-The-Main-Event-Loop.html#GSource"><span class="type">GSource</span></a>. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span>
-</td>
-</tr>
-</tbody>
-</table></div>
-<p class="since">Since 2.28</p>
-</div>
-<hr>
-<div class="refsect2">
-<a name="g-pollable-output-stream-write-nonblocking"></a><h3>g_pollable_output_stream_write_nonblocking ()</h3>
-<pre class="programlisting"><a href="./../glib/glib/glib-Basic-Types.html#gssize"><span class="returnvalue">gssize</span></a> g_pollable_output_stream_write_nonblocking
- (<em class="parameter"><code><a class="link" href="GPollableOutputStream.html" title="GPollableOutputStream"><span class="type">GPollableOutputStream</span></a> *stream</code></em>,
- <em class="parameter"><code>const <span class="type">void</span> *buffer</code></em>,
- <em class="parameter"><code><a href="./../glib/glib/glib-Basic-Types.html#gsize"><span class="type">gsize</span></a> count</code></em>,
- <em class="parameter"><code><a class="link" href="GCancellable.html" title="GCancellable"><span class="type">GCancellable</span></a> *cancellable</code></em>,
- <em class="parameter"><code><a href="./../glib/glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
-<p>
-Attempts to write up to <em class="parameter"><code>count</code></em> bytes from <em class="parameter"><code>buffer</code></em> to <em class="parameter"><code>stream</code></em>, as
-with <a class="link" href="GOutputStream.html#g-output-stream-write" title="g_output_stream_write ()"><code class="function">g_output_stream_write()</code></a>. If <em class="parameter"><code>stream</code></em> is not currently writable,
-this will immediately return <a class="link" href="gio-GIOError.html#G-IO-ERROR-WOULD-BLOCK:CAPS"><code class="literal">G_IO_ERROR_WOULD_BLOCK</code></a>, and you can
-use <a class="link" href="GPollableOutputStream.html#g-pollable-output-stream-create-source" title="g_pollable_output_stream_create_source ()"><code class="function">g_pollable_output_stream_create_source()</code></a> to create a <a href="./../glib/glib/glib-The-Main-Event-Loop.html#GSource"><span class="type">GSource</span></a>
-that will be triggered when <em class="parameter"><code>stream</code></em> is writable.
-</p>
-<p>
-Note that since this method never blocks, you cannot actually
-use <em class="parameter"><code>cancellable</code></em> to cancel it. However, it will return an error
-if <em class="parameter"><code>cancellable</code></em> has already been cancelled when you call, which
-may happen if you call this method after a source triggers due
-to having been cancelled.
-</p>
-<p>
-Virtual: write_nonblocking
-</p>
-<div class="variablelist"><table border="0">
-<col align="left" valign="top">
-<tbody>
-<tr>
-<td><p><span class="term"><em class="parameter"><code>stream</code></em> :</span></p></td>
-<td>a <a class="link" href="GPollableOutputStream.html" title="GPollableOutputStream"><span class="type">GPollableOutputStream</span></a>
-</td>
-</tr>
-<tr>
-<td><p><span class="term"><em class="parameter"><code>buffer</code></em> :</span></p></td>
-<td>a buffer to write
-data from. <span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=count][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> guint8]</span>
-</td>
-</tr>
-<tr>
-<td><p><span class="term"><em class="parameter"><code>count</code></em> :</span></p></td>
-<td>the number of bytes you want to write</td>
-</tr>
-<tr>
-<td><p><span class="term"><em class="parameter"><code>cancellable</code></em> :</span></p></td>
-<td>a <a class="link" href="GCancellable.html" title="GCancellable"><span class="type">GCancellable</span></a>, or <a href="./../glib/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. <span class="annotation">[<acronym title="NULL is ok, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span>
-</td>
-</tr>
-<tr>
-<td><p><span class="term"><em class="parameter"><code>error</code></em> :</span></p></td>
-<td>
-<a href="./../glib/glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> for error reporting, or <a href="./../glib/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> to ignore.</td>
-</tr>
-<tr>
-<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
-<td>the number of bytes written, or -1 on error (including
-<a class="link" href="gio-GIOError.html#G-IO-ERROR-WOULD-BLOCK:CAPS"><code class="literal">G_IO_ERROR_WOULD_BLOCK</code></a>).</td>
-</tr>
-</tbody>
-</table></div>
-</div>
-</div>
-<div class="refsect1">
-<a name="GPollableOutputStream.see-also"></a><h2>See Also</h2>
-<a class="link" href="GOutputStream.html" title="GOutputStream"><span class="type">GOutputStream</span></a>, <a class="link" href="GFileDescriptorBased.html" title="GFileDescriptorBased"><span class="type">GFileDescriptorBased</span></a>, <a class="link" href="GPollableInputStream.html" title="GPollableInputStream"><span class="type">GPollableInputStream</span></a>
-</div>
-</div>
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