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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"><title>Memory Allocators</title><meta name="generator" content="DocBook XSL Stylesheets V1.73.2"><link rel="start" href="index.html" title="GLib Reference Manual"><link rel="up" href="glib-data-types.html" title="GLib Data Types"><link rel="prev" href="glib-Caches.html" title="Caches"><link rel="next" href="tools.html" title="GLib Tools"><meta name="generator" content="GTK-Doc V1.9 (XML mode)"><link rel="stylesheet" href="style.css" type="text/css"><link rel="chapter" href="glib.html" title="GLib Overview"><link rel="chapter" href="glib-fundamentals.html" title="GLib Fundamentals"><link rel="chapter" href="glib-core.html" title="GLib Core Application Support"><link rel="chapter" href="glib-utilities.html" title="GLib Utilities"><link rel="chapter" href="glib-data-types.html" title="GLib Data Types"><link rel="chapter" href="tools.html" title="GLib Tools"><link rel="index" href="ix01.html" title="Index"><link rel="index" href="ix02.html" title="Index of deprecated symbols"><link rel="index" href="ix03.html" title="Index of new symbols in 2.2"><link rel="index" href="ix04.html" title="Index of new symbols in 2.4"><link rel="index" href="ix05.html" title="Index of new symbols in 2.6"><link rel="index" href="ix06.html" title="Index of new symbols in 2.8"><link rel="index" href="ix07.html" title="Index of new symbols in 2.10"><link rel="index" href="ix08.html" title="Index of new symbols in 2.12"><link rel="index" href="ix09.html" title="Index of new symbols in 2.14"><link rel="index" href="ix10.html" title="Index of new symbols in 2.16"></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="2"><tr valign="middle"><td><a accesskey="p" href="glib-Caches.html"><img src="left.png" width="24" height="24" border="0" alt="Prev"></a></td><td><a accesskey="u" href="glib-data-types.html"><img src="up.png" width="24" height="24" border="0" alt="Up"></a></td><td><a accesskey="h" href="index.html"><img src="home.png" width="24" height="24" border="0" alt="Home"></a></td><th width="100%" align="center">GLib Reference Manual</th><td><a accesskey="n" href="tools.html"><img src="right.png" width="24" height="24" border="0" alt="Next"></a></td></tr><tr><td colspan="5" class="shortcuts"><nobr><a href="#id3369170" class="shortcut">Top</a>  |  <a href="#id3369244" class="shortcut">Description</a></nobr></td></tr></table><div class="refentry" lang="en"><a name="glib-Memory-Allocators"></a><div class="titlepage"></div><div class="refnamediv"><table width="100%"><tr><td valign="top"><h2><a name="id3369170"></a><span class="refentrytitle">Memory Allocators</span></h2><p>Memory Allocators — deprecated way to allocate chunks of memory for GList, GSList and GNode</p></td><td valign="top" align="right"></td></tr></table></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis">#include <glib.h> <a class="link" href="glib-Memory-Allocators.html#GAllocator">GAllocator</a>;<a class="link" href="glib-Memory-Allocators.html#GAllocator">GAllocator</a>* <a class="link" href="glib-Memory-Allocators.html#g-allocator-new">g_allocator_new</a> (const <a class="link" href="glib-Basic-Types.html#gchar">gchar</a> *name, <a class="link" href="glib-Basic-Types.html#guint">guint</a> n_preallocs);void <a class="link" href="glib-Memory-Allocators.html#g-allocator-free">g_allocator_free</a> (<a class="link" href="glib-Memory-Allocators.html#GAllocator">GAllocator</a> *allocator);</pre></div><div class="refsect1" lang="en"><a name="id3369244"></a><h2>Description</h2><p></p><p>Prior to 2.10, <a class="link" href="glib-Memory-Allocators.html#GAllocator"><span class="type">GAllocator</span></a> was used as an efficient way to allocate small pieces of memory for use with the <a class="link" href="glib-Doubly-Linked-Lists.html#GList"><span class="type">GList</span></a>, <a class="link" href="glib-Singly-Linked-Lists.html#GSList"><span class="type">GSList</span></a> and <a class="link" href="glib-N-ary-Trees.html#GNode"><span class="type">GNode</span></a> data structures. Since 2.10, it has been completely replaced by the <a class="link" href="glib-Memory-Slices.html" title="Memory Slices">slice allocator</a> and deprecated.</p></div><div class="refsect1" lang="en"><a name="id3369303"></a><h2>Details</h2><div class="refsect2" lang="en"><a name="id3369313"></a><h3><a name="GAllocator"></a>GAllocator</h3><a class="indexterm" name="id3369328"></a><pre class="programlisting">typedef struct _GAllocator GAllocator;</pre><div class="warning" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Warning</h3><p><code class="literal">GAllocator</code> is deprecated and should not be used in newly-written code.</p></div><p>The <span class="structname">GAllocator</span> struct contains private data. and should only be accessed using the following functions.</p></div><hr><div class="refsect2" lang="en"><a name="id3369361"></a><h3><a name="g-allocator-new"></a>g_allocator_new ()</h3><a class="indexterm" name="id3369376"></a><pre class="programlisting"><a class="link" href="glib-Memory-Allocators.html#GAllocator">GAllocator</a>* g_allocator_new (const <a class="link" href="glib-Basic-Types.html#gchar">gchar</a> *name, <a class="link" href="glib-Basic-Types.html#guint">guint</a> n_preallocs);</pre><div class="warning" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Warning</h3><p><code class="literal">g_allocator_new</code> has been deprecated since version 2.10 and should not be used in newly-written code. Use the <a class="link" href="glib-Memory-Slices.html" title="Memory Slices">slice allocator</a>instead</p></div><p>Creates a new <a class="link" href="glib-Memory-Allocators.html#GAllocator"><span class="type">GAllocator</span></a>.</p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td><td>the name of the <a class="link" href="glib-Memory-Allocators.html#GAllocator"><span class="type">GAllocator</span></a>. This name is used to set the name of the<a class="link" href="glib-Memory-Chunks.html#GMemChunk"><span class="type">GMemChunk</span></a> used by the <a class="link" href="glib-Memory-Allocators.html#GAllocator"><span class="type">GAllocator</span></a>, and is only used for debugging.</td></tr><tr><td><p><span class="term"><em class="parameter"><code>n_preallocs</code></em> :</span></p></td><td>the number of elements in each block of memory allocated.Larger blocks mean less calls to <a class="link" href="glib-Memory-Allocation.html#g-malloc"><code class="function">g_malloc()</code></a>, but some memory may be wasted.(GLib uses 128 elements per block by default.) The value must be between 1and 65535.</td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td>a new <a class="link" href="glib-Memory-Allocators.html#GAllocator"><span class="type">GAllocator</span></a>.</td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3369529"></a><h3><a name="g-allocator-free"></a>g_allocator_free ()</h3><a class="indexterm" name="id3369545"></a><pre class="programlisting">void g_allocator_free (<a class="link" href="glib-Memory-Allocators.html#GAllocator">GAllocator</a> *allocator);</pre><div class="warning" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Warning</h3><p><code class="literal">g_allocator_free</code> has been deprecated since version 2.10 and should not be used in newly-written code. Use the <a class="link" href="glib-Memory-Slices.html" title="Memory Slices">slice allocator</a>instead</p></div><p>Frees all of the memory allocated by the <a class="link" href="glib-Memory-Allocators.html#GAllocator"><span class="type">GAllocator</span></a>.</p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><p><span class="term"><em class="parameter"><code>allocator</code></em> :</span></p></td><td>a <a class="link" href="glib-Memory-Allocators.html#GAllocator"><span class="type">GAllocator</span></a>.</td></tr></tbody></table></div></div></div><div class="refsect1" lang="en"><a name="id3369629"></a><div class="refsect2" lang="en"><a name="id3369630"></a></div><hr><div class="refsect2" lang="en"><a name="id3369631"></a></div></div></div></body></html>⌨️ 快捷键说明
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