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docs: generated API documentation (483 pages)
2026-07-24 11:55:47 +00:00

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<a href="#pub-methods">Public 成员函数</a> &#124;
<a href="classvde_1_1foundation_1_1MemoryPool-members.html">所有成员列表</a> </div>
<div class="headertitle">
<div class="title">vde::foundation::MemoryPool&lt; T &gt; 模板类 参考<div class="ingroups"><a class="el" href="group__foundation.html">基础模块</a></div></div> </div>
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<div class="contents">
<p>固定块大小的内存池
<a href="classvde_1_1foundation_1_1MemoryPool.html#details">更多...</a></p>
<p><code>#include &lt;<a class="el" href="memory__pool_8h_source.html">memory_pool.h</a>&gt;</code></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public 成员函数</h2></td></tr>
<tr class="memitem:a0228bca74657aa48b902ffb0461e32a5"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classvde_1_1foundation_1_1MemoryPool.html#a0228bca74657aa48b902ffb0461e32a5">MemoryPool</a> (size_t chunk_size=1024)</td></tr>
<tr class="memdesc:a0228bca74657aa48b902ffb0461e32a5"><td class="mdescLeft">&#160;</td><td class="mdescRight">构造内存池 <a href="classvde_1_1foundation_1_1MemoryPool.html#a0228bca74657aa48b902ffb0461e32a5">更多...</a><br /></td></tr>
<tr class="separator:a0228bca74657aa48b902ffb0461e32a5"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a4611d4165f3735ed437822c5d465852b"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classvde_1_1foundation_1_1MemoryPool.html#a4611d4165f3735ed437822c5d465852b">~MemoryPool</a> ()</td></tr>
<tr class="memdesc:a4611d4165f3735ed437822c5d465852b"><td class="mdescLeft">&#160;</td><td class="mdescRight">析构内存池，释放所有已分配的内存块 <a href="classvde_1_1foundation_1_1MemoryPool.html#a4611d4165f3735ed437822c5d465852b">更多...</a><br /></td></tr>
<tr class="separator:a4611d4165f3735ed437822c5d465852b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ac08655947c5c96141200dc9f56f69a58"><td class="memItemLeft" align="right" valign="top">T *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classvde_1_1foundation_1_1MemoryPool.html#ac08655947c5c96141200dc9f56f69a58">allocate</a> (size_t n=1)</td></tr>
<tr class="memdesc:ac08655947c5c96141200dc9f56f69a58"><td class="mdescLeft">&#160;</td><td class="mdescRight">从池中分配 n 个 T 对象的内存 <a href="classvde_1_1foundation_1_1MemoryPool.html#ac08655947c5c96141200dc9f56f69a58">更多...</a><br /></td></tr>
<tr class="separator:ac08655947c5c96141200dc9f56f69a58"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ab41d1e9d5cf5a85b79056850c1cae439"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classvde_1_1foundation_1_1MemoryPool.html#ab41d1e9d5cf5a85b79056850c1cae439">deallocate</a> (T *p, size_t=1)</td></tr>
<tr class="memdesc:ab41d1e9d5cf5a85b79056850c1cae439"><td class="mdescLeft">&#160;</td><td class="mdescRight">将内存归还到池中 <a href="classvde_1_1foundation_1_1MemoryPool.html#ab41d1e9d5cf5a85b79056850c1cae439">更多...</a><br /></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">详细描述</h2>
<div class="textblock"><h3>template&lt;typename T&gt;<br />
class vde::foundation::MemoryPool&lt; T &gt;</h3>
<p>固定块大小的内存池 </p>
<p>使用空闲链表实现 O(1) 的分配和释放。按固定大小的 chunk 预先分配内存， 适合频繁创建/销毁同类型小对象的场景（如半边网格的顶点和面）。</p>
<dl class="tparams"><dt>模板参数</dt><dd>
<table class="tparams">
<tr><td class="paramname">T</td><td>池中存储的对象类型</td></tr>
</table>
</dd>
</dl>
<dl class="section note"><dt>注解</dt><dd>内存池不调用对象的构造函数/析构函数，仅管理原始内存 </dd>
<dd>
适合 POD 类型或通过 placement new 手动管理生命周期的类型 </dd></dl>
<dl class="section warning"><dt>警告</dt><dd>不在单个对象释放时归还内存给操作系统；仅在池析构时统一释放所有 chunk</dd></dl>
<div class="fragment"><div class="line">MemoryPool&lt;Vertex&gt; pool(4096);</div>
<div class="line">Vertex* v = pool.allocate(); <span class="comment">// O(1)</span></div>
<div class="line"><span class="comment">// ... 使用 v ...</span></div>
<div class="line">pool.deallocate(v); <span class="comment">// O(1)</span></div>
</div><!-- fragment -->
<p class="definition">在文件 <a class="el" href="memory__pool_8h_source.html">memory_pool.h</a> 第 <a class="el" href="memory__pool_8h_source.html#l00030">30</a> 行定义.</p>
</div><h2 class="groupheader">构造及析构函数说明</h2>
<a id="a0228bca74657aa48b902ffb0461e32a5"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a0228bca74657aa48b902ffb0461e32a5">&#9670;&nbsp;</a></span>MemoryPool()</h2>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template&lt;typename T &gt; </div>
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="classvde_1_1foundation_1_1MemoryPool.html">vde::foundation::MemoryPool</a>&lt; T &gt;::<a class="el" href="classvde_1_1foundation_1_1MemoryPool.html">MemoryPool</a> </td>
<td>(</td>
<td class="paramtype">size_t&#160;</td>
<td class="paramname"><em>chunk_size</em> = <code>1024</code></td><td>)</td>
<td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">explicit</span></span> </td>
</tr>
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<p>构造内存池 </p>
<dl class="params"><dt>参数</dt><dd>
<table class="params">
<tr><td class="paramname">chunk_size</td><td>每个内存块可容纳的对象数（默认 1024） </td></tr>
</table>
</dd>
</dl>
<p class="definition">在文件 <a class="el" href="memory__pool_8h_source.html">memory_pool.h</a> 第 <a class="el" href="memory__pool_8h_source.html#l00036">36</a> 行定义.</p>
</div>
</div>
<a id="a4611d4165f3735ed437822c5d465852b"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a4611d4165f3735ed437822c5d465852b">&#9670;&nbsp;</a></span>~MemoryPool()</h2>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template&lt;typename T &gt; </div>
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="classvde_1_1foundation_1_1MemoryPool.html">vde::foundation::MemoryPool</a>&lt; T &gt;::~<a class="el" href="classvde_1_1foundation_1_1MemoryPool.html">MemoryPool</a> </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>析构内存池，释放所有已分配的内存块 </p>
<p class="definition">在文件 <a class="el" href="memory__pool_8h_source.html">memory_pool.h</a> 第 <a class="el" href="memory__pool_8h_source.html#l00041">41</a> 行定义.</p>
</div>
</div>
<h2 class="groupheader">成员函数说明</h2>
<a id="ac08655947c5c96141200dc9f56f69a58"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ac08655947c5c96141200dc9f56f69a58">&#9670;&nbsp;</a></span>allocate()</h2>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template&lt;typename T &gt; </div>
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">T* <a class="el" href="classvde_1_1foundation_1_1MemoryPool.html">vde::foundation::MemoryPool</a>&lt; T &gt;::allocate </td>
<td>(</td>
<td class="paramtype">size_t&#160;</td>
<td class="paramname"><em>n</em> = <code>1</code></td><td>)</td>
<td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>从池中分配 n 个 T 对象的内存 </p>
<p>当前实现忽略 n 参数，每次始终分配一个对象。 若空闲链表为空，自动分配新的 chunk。</p>
<dl class="params"><dt>参数</dt><dd>
<table class="params">
<tr><td class="paramname">n</td><td>对象数量（当前未使用，保留用于 API 兼容） </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>返回</dt><dd>指向未初始化内存的指针</dd></dl>
<dl class="section pre"><dt>前置条件</dt><dd>n 应小于 chunk_size_ </dd></dl>
<p class="definition">在文件 <a class="el" href="memory__pool_8h_source.html">memory_pool.h</a> 第 <a class="el" href="memory__pool_8h_source.html#l00054">54</a> 行定义.</p>
</div>
</div>
<a id="ab41d1e9d5cf5a85b79056850c1cae439"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ab41d1e9d5cf5a85b79056850c1cae439">&#9670;&nbsp;</a></span>deallocate()</h2>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template&lt;typename T &gt; </div>
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">void <a class="el" href="classvde_1_1foundation_1_1MemoryPool.html">vde::foundation::MemoryPool</a>&lt; T &gt;::deallocate </td>
<td>(</td>
<td class="paramtype">T *&#160;</td>
<td class="paramname"><em>p</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t&#160;</td>
<td class="paramname"> = <code>1</code>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>将内存归还到池中 </p>
<p>将对象内存插入空闲链表头部，不调用析构函数。</p>
<dl class="params"><dt>参数</dt><dd>
<table class="params">
<tr><td class="paramname">p</td><td>之前从 <a class="el" href="classvde_1_1foundation_1_1MemoryPool.html#ac08655947c5c96141200dc9f56f69a58" title="从池中分配 n 个 T 对象的内存">allocate()</a> 获取的指针 </td></tr>
</table>
</dd>
</dl>
<p class="definition">在文件 <a class="el" href="memory__pool_8h_source.html">memory_pool.h</a> 第 <a class="el" href="memory__pool_8h_source.html#l00068">68</a> 行定义.</p>
</div>
</div>
<hr/>该类的文档由以下文件生成:<ul>
<li>include/vde/foundation/<a class="el" href="memory__pool_8h_source.html">memory_pool.h</a></li>
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