blob: 6f941083c6ac8322bb10be101be13e1e58d6044a [file] [log] [blame]
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>gpollableutils: GIO Reference Manual</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.79.1">
<link rel="home" href="index.html" title="GIO Reference Manual">
<link rel="up" href="streaming.html" title="Streaming I/O">
<link rel="prev" href="GPollableOutputStream.html" title="GPollableOutputStream">
<link rel="next" href="types.html" title="File types and applications">
<meta name="generator" content="GTK-Doc V1.25.1 (XML mode)">
<link rel="stylesheet" href="style.css" type="text/css">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="5"><tr valign="middle">
<td width="100%" align="left" class="shortcuts">
<a href="#" class="shortcut">Top</a><span id="nav_description">  <span class="dim">|</span> 
<a href="#gio-gpollableutils.description" class="shortcut">Description</a></span>
</td>
<td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td>
<td><a accesskey="u" href="streaming.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td>
<td><a accesskey="p" href="GPollableOutputStream.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td>
<td><a accesskey="n" href="types.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td>
</tr></table>
<div class="refentry">
<a name="gio-gpollableutils"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="gio-gpollableutils.top_of_page"></a>gpollableutils</span></h2>
<p>gpollableutils — Utilities for pollable streams</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="gio-gpollableutils.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">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a href="../glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<span class="c_punctuation">(</span><a class="link" href="gio-gpollableutils.html#GPollableSourceFunc" title="GPollableSourceFunc ()">*GPollableSourceFunc</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="../glib-The-Main-Event-Loop.html#GSource"><span class="returnvalue">GSource</span></a> *
</td>
<td class="function_name">
<a class="link" href="gio-gpollableutils.html#g-pollable-source-new" title="g_pollable_source_new ()">g_pollable_source_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="../glib-The-Main-Event-Loop.html#GSource"><span class="returnvalue">GSource</span></a> *
</td>
<td class="function_name">
<a class="link" href="gio-gpollableutils.html#g-pollable-source-new-full" title="g_pollable_source_new_full ()">g_pollable_source_new_full</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="../glib-Basic-Types.html#gssize"><span class="returnvalue">gssize</span></a>
</td>
<td class="function_name">
<a class="link" href="gio-gpollableutils.html#g-pollable-stream-read" title="g_pollable_stream_read ()">g_pollable_stream_read</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="../glib-Basic-Types.html#gssize"><span class="returnvalue">gssize</span></a>
</td>
<td class="function_name">
<a class="link" href="gio-gpollableutils.html#g-pollable-stream-write" title="g_pollable_stream_write ()">g_pollable_stream_write</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="../glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="gio-gpollableutils.html#g-pollable-stream-write-all" title="g_pollable_stream_write_all ()">g_pollable_stream_write_all</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gio-gpollableutils.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include &lt;gio/gio.h&gt;
</pre>
</div>
<div class="refsect1">
<a name="gio-gpollableutils.description"></a><h2>Description</h2>
<p>Utility functions for <a class="link" href="GPollableInputStream.html" title="GPollableInputStream"><span class="type">GPollableInputStream</span></a> and
<a class="link" href="GPollableOutputStream.html" title="GPollableOutputStream"><span class="type">GPollableOutputStream</span></a> implementations.</p>
</div>
<div class="refsect1">
<a name="gio-gpollableutils.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="GPollableSourceFunc"></a><h3>GPollableSourceFunc ()</h3>
<pre class="programlisting"><a href="../glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
<span class="c_punctuation">(</span>*GPollableSourceFunc<span class="c_punctuation">)</span> (<em class="parameter"><code><a href="../gobject-The-Base-Object-Type.html#GObject-struct"><span class="type">GObject</span></a> *pollable_stream</code></em>,
<em class="parameter"><code><a href="../glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
<p>This is the function type of the callback used for the <a href="../glib-The-Main-Event-Loop.html#GSource"><span class="type">GSource</span></a>
returned by <a class="link" href="GPollableInputStream.html#g-pollable-input-stream-create-source" title="g_pollable_input_stream_create_source ()"><code class="function">g_pollable_input_stream_create_source()</code></a> and
<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>.</p>
<div class="refsect3">
<a name="GPollableSourceFunc.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pollable_stream</p></td>
<td class="parameter_description"><p>the <a class="link" href="GPollableInputStream.html" title="GPollableInputStream"><span class="type">GPollableInputStream</span></a> or <a class="link" href="GPollableOutputStream.html" title="GPollableOutputStream"><span class="type">GPollableOutputStream</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>data passed in by the user.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="GPollableSourceFunc.returns"></a><h4>Returns</h4>
<p> it should return <a href="../glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> if the source should be removed.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-28.html#api-index-2.28">2.28</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-pollable-source-new"></a><h3>g_pollable_source_new ()</h3>
<pre class="programlisting"><a href="../glib-The-Main-Event-Loop.html#GSource"><span class="returnvalue">GSource</span></a> *
g_pollable_source_new (<em class="parameter"><code><a href="../gobject-The-Base-Object-Type.html#GObject-struct"><span class="type">GObject</span></a> *pollable_stream</code></em>);</pre>
<p>Utility method for <a class="link" href="GPollableInputStream.html" title="GPollableInputStream"><span class="type">GPollableInputStream</span></a> and <a class="link" href="GPollableOutputStream.html" title="GPollableOutputStream"><span class="type">GPollableOutputStream</span></a>
implementations. Creates a new <a href="../glib-The-Main-Event-Loop.html#GSource"><span class="type">GSource</span></a> that expects a callback of
type <a class="link" href="gio-gpollableutils.html#GPollableSourceFunc" title="GPollableSourceFunc ()"><span class="type">GPollableSourceFunc</span></a>. The new source does not actually do
anything on its own; use <a href="../glib-The-Main-Event-Loop.html#g-source-add-child-source"><code class="function">g_source_add_child_source()</code></a> to add other
sources to it to cause it to trigger.</p>
<div class="refsect3">
<a name="g-pollable-source-new.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>pollable_stream</p></td>
<td class="parameter_description"><p>the stream associated with the new source</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-pollable-source-new.returns"></a><h4>Returns</h4>
<p> the new <a href="../glib-The-Main-Event-Loop.html#GSource"><span class="type">GSource</span></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-28.html#api-index-2.28">2.28</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-pollable-source-new-full"></a><h3>g_pollable_source_new_full ()</h3>
<pre class="programlisting"><a href="../glib-The-Main-Event-Loop.html#GSource"><span class="returnvalue">GSource</span></a> *
g_pollable_source_new_full (<em class="parameter"><code><a href="../glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> pollable_stream</code></em>,
<em class="parameter"><code><a href="../glib-The-Main-Event-Loop.html#GSource"><span class="type">GSource</span></a> *child_source</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>Utility method for <a class="link" href="GPollableInputStream.html" title="GPollableInputStream"><span class="type">GPollableInputStream</span></a> and <a class="link" href="GPollableOutputStream.html" title="GPollableOutputStream"><span class="type">GPollableOutputStream</span></a>
implementations. Creates a new <a href="../glib-The-Main-Event-Loop.html#GSource"><span class="type">GSource</span></a>, as with
<a class="link" href="gio-gpollableutils.html#g-pollable-source-new" title="g_pollable_source_new ()"><code class="function">g_pollable_source_new()</code></a>, but also attaching <em class="parameter"><code>child_source</code></em>
(with a
dummy callback), and <em class="parameter"><code>cancellable</code></em>
, if they are non-<a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>.</p>
<div class="refsect3">
<a name="g-pollable-source-new-full.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pollable_stream</p></td>
<td class="parameter_description"><p> the stream associated with the
new source. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Override the parsed C type with given type."><span class="acronym">type</span></acronym> GObject]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>child_source</p></td>
<td class="parameter_description"><p> optional child source to attach. </p></td>
<td class="parameter_annotations"><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 class="parameter_name"><p>cancellable</p></td>
<td class="parameter_description"><p> optional <a class="link" href="GCancellable.html" title="GCancellable"><span class="type">GCancellable</span></a> to attach. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-pollable-source-new-full.returns"></a><h4>Returns</h4>
<p> the new <a href="../glib-The-Main-Event-Loop.html#GSource"><span class="type">GSource</span></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-34.html#api-index-2.34">2.34</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-pollable-stream-read"></a><h3>g_pollable_stream_read ()</h3>
<pre class="programlisting"><a href="../glib-Basic-Types.html#gssize"><span class="returnvalue">gssize</span></a>
g_pollable_stream_read (<em class="parameter"><code><a class="link" href="GInputStream.html" title="GInputStream"><span class="type">GInputStream</span></a> *stream</code></em>,
<em class="parameter"><code><span class="type">void</span> *buffer</code></em>,
<em class="parameter"><code><a href="../glib-Basic-Types.html#gsize"><span class="type">gsize</span></a> count</code></em>,
<em class="parameter"><code><a href="../glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> blocking</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-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Tries to read from <em class="parameter"><code>stream</code></em>
, as with <a class="link" href="GInputStream.html#g-input-stream-read" title="g_input_stream_read ()"><code class="function">g_input_stream_read()</code></a> (if
<em class="parameter"><code>blocking</code></em>
is <a href="../glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a>) or <a class="link" href="GPollableInputStream.html#g-pollable-input-stream-read-nonblocking" title="g_pollable_input_stream_read_nonblocking ()"><code class="function">g_pollable_input_stream_read_nonblocking()</code></a>
(if <em class="parameter"><code>blocking</code></em>
is <a href="../glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a>). This can be used to more easily share
code between blocking and non-blocking implementations of a method.</p>
<p>If <em class="parameter"><code>blocking</code></em>
is <a href="../glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a>, then <em class="parameter"><code>stream</code></em>
must be a
<a class="link" href="GPollableInputStream.html" title="GPollableInputStream"><span class="type">GPollableInputStream</span></a> for which <a class="link" href="GPollableInputStream.html#g-pollable-input-stream-can-poll" title="g_pollable_input_stream_can_poll ()"><code class="function">g_pollable_input_stream_can_poll()</code></a>
returns <a href="../glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a>, or else the behavior is undefined. If <em class="parameter"><code>blocking</code></em>
is
<a href="../glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a>, then <em class="parameter"><code>stream</code></em>
does not need to be a <a class="link" href="GPollableInputStream.html" title="GPollableInputStream"><span class="type">GPollableInputStream</span></a>.</p>
<div class="refsect3">
<a name="g-pollable-stream-read.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>stream</p></td>
<td class="parameter_description"><p>a <a class="link" href="GInputStream.html" title="GInputStream"><span class="type">GInputStream</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>buffer</p></td>
<td class="parameter_description"><p> a buffer to
read data into. </p></td>
<td class="parameter_annotations"><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 class="parameter_name"><p>count</p></td>
<td class="parameter_description"><p>the number of bytes to read</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>blocking</p></td>
<td class="parameter_description"><p>whether to do blocking I/O</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cancellable</p></td>
<td class="parameter_description"><p> optional <a class="link" href="GCancellable.html" title="GCancellable"><span class="type">GCancellable</span></a> object, <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> to ignore. </p></td>
<td class="parameter_annotations"><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 class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>location to store the error occurring, or <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> to ignore</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-pollable-stream-read.returns"></a><h4>Returns</h4>
<p> the number of bytes read, or -1 on error.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-34.html#api-index-2.34">2.34</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-pollable-stream-write"></a><h3>g_pollable_stream_write ()</h3>
<pre class="programlisting"><a href="../glib-Basic-Types.html#gssize"><span class="returnvalue">gssize</span></a>
g_pollable_stream_write (<em class="parameter"><code><a class="link" href="GOutputStream.html" title="GOutputStream"><span class="type">GOutputStream</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-Basic-Types.html#gsize"><span class="type">gsize</span></a> count</code></em>,
<em class="parameter"><code><a href="../glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> blocking</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-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Tries to write 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>blocking</code></em>
is <a href="../glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a>) or <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>
(if <em class="parameter"><code>blocking</code></em>
is <a href="../glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a>). This can be used to more easily share
code between blocking and non-blocking implementations of a method.</p>
<p>If <em class="parameter"><code>blocking</code></em>
is <a href="../glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a>, then <em class="parameter"><code>stream</code></em>
must be a
<a class="link" href="GPollableOutputStream.html" title="GPollableOutputStream"><span class="type">GPollableOutputStream</span></a> for which
<a class="link" href="GPollableOutputStream.html#g-pollable-output-stream-can-poll" title="g_pollable_output_stream_can_poll ()"><code class="function">g_pollable_output_stream_can_poll()</code></a> returns <a href="../glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> or else the
behavior is undefined. If <em class="parameter"><code>blocking</code></em>
is <a href="../glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a>, then <em class="parameter"><code>stream</code></em>
does not
need to be a <a class="link" href="GPollableOutputStream.html" title="GPollableOutputStream"><span class="type">GPollableOutputStream</span></a>.</p>
<div class="refsect3">
<a name="g-pollable-stream-write.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>stream</p></td>
<td class="parameter_description"><p>a <a class="link" href="GOutputStream.html" title="GOutputStream"><span class="type">GOutputStream</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>buffer</p></td>
<td class="parameter_description"><p> the buffer
containing the data to write. </p></td>
<td class="parameter_annotations"><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 class="parameter_name"><p>count</p></td>
<td class="parameter_description"><p>the number of bytes to write</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>blocking</p></td>
<td class="parameter_description"><p>whether to do blocking I/O</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cancellable</p></td>
<td class="parameter_description"><p> optional <a class="link" href="GCancellable.html" title="GCancellable"><span class="type">GCancellable</span></a> object, <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> to ignore. </p></td>
<td class="parameter_annotations"><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 class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>location to store the error occurring, or <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> to ignore</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-pollable-stream-write.returns"></a><h4>Returns</h4>
<p> the number of bytes written, or -1 on error.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-34.html#api-index-2.34">2.34</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-pollable-stream-write-all"></a><h3>g_pollable_stream_write_all ()</h3>
<pre class="programlisting"><a href="../glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
g_pollable_stream_write_all (<em class="parameter"><code><a class="link" href="GOutputStream.html" title="GOutputStream"><span class="type">GOutputStream</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-Basic-Types.html#gsize"><span class="type">gsize</span></a> count</code></em>,
<em class="parameter"><code><a href="../glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> blocking</code></em>,
<em class="parameter"><code><a href="../glib-Basic-Types.html#gsize"><span class="type">gsize</span></a> *bytes_written</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-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Tries to write <em class="parameter"><code>count</code></em>
bytes to <em class="parameter"><code>stream</code></em>
, as with
<a class="link" href="GOutputStream.html#g-output-stream-write-all" title="g_output_stream_write_all ()"><code class="function">g_output_stream_write_all()</code></a>, but using <a class="link" href="gio-gpollableutils.html#g-pollable-stream-write" title="g_pollable_stream_write ()"><code class="function">g_pollable_stream_write()</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>.</p>
<p>On a successful write of <em class="parameter"><code>count</code></em>
bytes, <a href="../glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> is returned, and
<em class="parameter"><code>bytes_written</code></em>
is set to <em class="parameter"><code>count</code></em>
.</p>
<p>If there is an error during the operation (including
<a class="link" href="gio-GIOError.html#G-IO-ERROR-WOULD-BLOCK:CAPS"><code class="literal">G_IO_ERROR_WOULD_BLOCK</code></a> in the non-blocking case), <a href="../glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> is
returned and <em class="parameter"><code>error</code></em>
is set to indicate the error status,
<em class="parameter"><code>bytes_written</code></em>
is updated to contain the number of bytes written
into the stream before the error occurred.</p>
<p>As with <a class="link" href="gio-gpollableutils.html#g-pollable-stream-write" title="g_pollable_stream_write ()"><code class="function">g_pollable_stream_write()</code></a>, if <em class="parameter"><code>blocking</code></em>
is <a href="../glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a>, then
<em class="parameter"><code>stream</code></em>
must be a <a class="link" href="GPollableOutputStream.html" title="GPollableOutputStream"><span class="type">GPollableOutputStream</span></a> for which
<a class="link" href="GPollableOutputStream.html#g-pollable-output-stream-can-poll" title="g_pollable_output_stream_can_poll ()"><code class="function">g_pollable_output_stream_can_poll()</code></a> returns <a href="../glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> or else the
behavior is undefined. If <em class="parameter"><code>blocking</code></em>
is <a href="../glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a>, then <em class="parameter"><code>stream</code></em>
does not
need to be a <a class="link" href="GPollableOutputStream.html" title="GPollableOutputStream"><span class="type">GPollableOutputStream</span></a>.</p>
<div class="refsect3">
<a name="g-pollable-stream-write-all.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>stream</p></td>
<td class="parameter_description"><p>a <a class="link" href="GOutputStream.html" title="GOutputStream"><span class="type">GOutputStream</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>buffer</p></td>
<td class="parameter_description"><p> the buffer
containing the data to write. </p></td>
<td class="parameter_annotations"><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 class="parameter_name"><p>count</p></td>
<td class="parameter_description"><p>the number of bytes to write</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>blocking</p></td>
<td class="parameter_description"><p>whether to do blocking I/O</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>bytes_written</p></td>
<td class="parameter_description"><p> location to store the number of bytes that was
written to the stream. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>cancellable</p></td>
<td class="parameter_description"><p> optional <a class="link" href="GCancellable.html" title="GCancellable"><span class="type">GCancellable</span></a> object, <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> to ignore. </p></td>
<td class="parameter_annotations"><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 class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>location to store the error occurring, or <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> to ignore</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-pollable-stream-write-all.returns"></a><h4>Returns</h4>
<p> <a href="../glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> on success, <a href="../glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> if there was an error</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-34.html#api-index-2.34">2.34</a></p>
</div>
</div>
<div class="refsect1">
<a name="gio-gpollableutils.other_details"></a><h2>Types and Values</h2>
</div>
</div>
<div class="footer">
<hr>Generated by GTK-Doc V1.25.1</div>
</body>
</html>