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<title>&lt;GMappedFile&gt;: </title>
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<div class="refentry">
<a name="id-1.1.36"></a><div class="titlepage"></div>
<div class="refnamediv">
<h2>&lt;GMappedFile&gt;</h2>
<p>&lt;GMappedFile&gt;</p>
</div>
<div class="refsect1">
<a name="id-1.1.36.2"></a><h2>Description</h2>
<p>The <span class="type">GMappedFile</span> represents a file mapping created with
<code class="function">g_mapped_file_new()</code>. It has only private members and should
not be accessed directly.</p>
</div>
<div class="refsect1">
<a name="id-1.1.36.3"></a><h2>Functions</h2>
<div class="refsect2">
<a name="id-1.1.36.3.2"></a><h3>free</h3>
<div class="informalexample"><pre class="programlisting">(define-values () (mapped-file:free self))
</pre></div>
<p>This call existed before <span class="type">GMappedFile</span> had refcounting and is currently
exactly the same as <code class="function">g_mapped_file_unref()</code>.</p>
<div class="refsect3">
<a name="id-1.1.36.3.2.4"></a><h4>Parameters</h4>
<div class="informaltable"><table><tr>
<td class="parameter_name"><p>file</p></td>
<td class="parameter_description">
<p>a <span class="type">GMappedFile</span></p>
<p>Passed as <code class="code">self</code></p>
</td>
</tr></table></div>
</div>
</div>
<div class="refsect2">
<a name="id-1.1.36.3.3"></a><h3>get-bytes</h3>
<div class="informalexample"><pre class="programlisting">(define-values (%return) (mapped-file:get-bytes self))
</pre></div>
<p>Creates a new <span class="type">GBytes</span> which references the data mapped from <em class="parameter"><code>file</code></em>.
The mapped contents of the file must not be modified after creating this
bytes object, because a <span class="type">GBytes</span> should be immutable.</p>
<div class="refsect3">
<a name="id-1.1.36.3.3.4"></a><h4>Parameters</h4>
<div class="informaltable"><table><tr>
<td class="parameter_name"><p>file</p></td>
<td class="parameter_description">
<p>a <span class="type">GMappedFile</span></p>
<p>Passed as <code class="code">self</code></p>
</td>
</tr></table></div>
</div>
</div>
<div class="refsect2">
<a name="id-1.1.36.3.4"></a><h3>get-contents</h3>
<div class="informalexample"><pre class="programlisting">(define-values (%return) (mapped-file:get-contents self))
</pre></div>
<p>Returns the contents of a <span class="type">GMappedFile</span>.
</p>
<p>Note that the contents may not be zero-terminated,
even if the <span class="type">GMappedFile</span> is backed by a text file.
</p>
<p>If the file is empty then <code class="constant">NULL</code> is returned.</p>
<div class="refsect3">
<a name="id-1.1.36.3.4.6"></a><h4>Parameters</h4>
<div class="informaltable"><table><tr>
<td class="parameter_name"><p>file</p></td>
<td class="parameter_description">
<p>a <span class="type">GMappedFile</span></p>
<p>Passed as <code class="code">self</code></p>
</td>
</tr></table></div>
</div>
</div>
<div class="refsect2">
<a name="id-1.1.36.3.5"></a><h3>get-length</h3>
<div class="informalexample"><pre class="programlisting">(define-values (%return) (mapped-file:get-length self))
</pre></div>
<p>Returns the length of the contents of a <span class="type">GMappedFile</span>.</p>
<div class="refsect3">
<a name="id-1.1.36.3.5.4"></a><h4>Parameters</h4>
<div class="informaltable"><table><tr>
<td class="parameter_name"><p>file</p></td>
<td class="parameter_description">
<p>a <span class="type">GMappedFile</span></p>
<p>Passed as <code class="code">self</code></p>
</td>
</tr></table></div>
</div>
</div>
<div class="refsect2">
<a name="id-1.1.36.3.6"></a><h3>ref</h3>
<div class="informalexample"><pre class="programlisting">(define-values (%return) (mapped-file:ref self))
</pre></div>
<p>Increments the reference count of <em class="parameter"><code>file</code></em> by one.  It is safe to call
this function from any thread.</p>
<div class="refsect3">
<a name="id-1.1.36.3.6.4"></a><h4>Parameters</h4>
<div class="informaltable"><table><tr>
<td class="parameter_name"><p>file</p></td>
<td class="parameter_description">
<p>a <span class="type">GMappedFile</span></p>
<p>Passed as <code class="code">self</code></p>
</td>
</tr></table></div>
</div>
</div>
<div class="refsect2">
<a name="id-1.1.36.3.7"></a><h3>unref</h3>
<div class="informalexample"><pre class="programlisting">(define-values () (mapped-file:unref self))
</pre></div>
<p>Decrements the reference count of <em class="parameter"><code>file</code></em> by one.  If the reference count
drops to 0, unmaps the buffer of <em class="parameter"><code>file</code></em> and frees it.
</p>
<p>It is safe to call this function from any thread.
</p>
<p>Since 2.22</p>
<div class="refsect3">
<a name="id-1.1.36.3.7.6"></a><h4>Parameters</h4>
<div class="informaltable"><table><tr>
<td class="parameter_name"><p>file</p></td>
<td class="parameter_description">
<p>a <span class="type">GMappedFile</span></p>
<p>Passed as <code class="code">self</code></p>
</td>
</tr></table></div>
</div>
</div>
<div class="refsect2">
<a name="id-1.1.36.3.8"></a><h3>mapped-file:new-from-fd</h3>
<div class="informalexample"><pre class="programlisting">(define-values (%return) (mapped-file:new-from-fd fd writable))
</pre></div>
<p>Undocumented</p>
<div class="refsect3">
<a name="id-1.1.36.3.8.4"></a><h4>Parameters</h4>
<div class="informaltable"><table>
<tr>
<td class="parameter_name"><p>fd</p></td>
<td class="parameter_description">
<p></p>
<p>Passed as <code class="code">fd</code></p>
</td>
</tr>
<tr>
<td class="parameter_name"><p>writable</p></td>
<td class="parameter_description">
<p></p>
<p>Passed as <code class="code">writable</code></p>
</td>
</tr>
</table></div>
</div>
</div>
<div class="refsect2">
<a name="id-1.1.36.3.9"></a><h3>mapped-file:new</h3>
<div class="informalexample"><pre class="programlisting">(define-values (%return) (mapped-file:new filename writable))
</pre></div>
<p>Undocumented</p>
<div class="refsect3">
<a name="id-1.1.36.3.9.4"></a><h4>Parameters</h4>
<div class="informaltable"><table>
<tr>
<td class="parameter_name"><p>filename</p></td>
<td class="parameter_description">
<p></p>
<p>Passed as <code class="code">filename</code></p>
</td>
</tr>
<tr>
<td class="parameter_name"><p>writable</p></td>
<td class="parameter_description">
<p></p>
<p>Passed as <code class="code">writable</code></p>
</td>
</tr>
</table></div>
</div>
</div>
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