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  <div class="summary">
<a href="#nested-classes">类</a> &#124;
<a href="#pub-methods">Public 成员函数</a> &#124;
<a href="#pub-static-methods">静态 Public 成员函数</a> &#124;
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<div class="title">rapidjson::MemoryPoolAllocator&lt; BaseAllocator &gt; 模板类 参考</div>  </div>
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<p>Default memory allocator used by the parser and DOM.  
 <a href="classrapidjson_1_1_memory_pool_allocator.html#details">更多...</a></p>

<p><code>#include &lt;<a class="el" href="allocators_8h_source.html">allocators.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:a59d783f4feba17dcd35d9f25fcbc09f4"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classrapidjson_1_1_memory_pool_allocator.html#a59d783f4feba17dcd35d9f25fcbc09f4">MemoryPoolAllocator</a> (size_t chunkSize=kDefaultChunkCapacity, BaseAllocator *baseAllocator=0)</td></tr>
<tr class="memdesc:a59d783f4feba17dcd35d9f25fcbc09f4"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructor with chunkSize.  <a href="#a59d783f4feba17dcd35d9f25fcbc09f4">更多...</a><br /></td></tr>
<tr class="separator:a59d783f4feba17dcd35d9f25fcbc09f4"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:abcc572bdb6902c9d69711540db5098a7"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classrapidjson_1_1_memory_pool_allocator.html#abcc572bdb6902c9d69711540db5098a7">MemoryPoolAllocator</a> (void *buffer, size_t size, size_t chunkSize=kDefaultChunkCapacity, BaseAllocator *baseAllocator=0)</td></tr>
<tr class="memdesc:abcc572bdb6902c9d69711540db5098a7"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructor with user-supplied buffer.  <a href="#abcc572bdb6902c9d69711540db5098a7">更多...</a><br /></td></tr>
<tr class="separator:abcc572bdb6902c9d69711540db5098a7"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aa1d5b36c67611937e8ad6b2be53a483e"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classrapidjson_1_1_memory_pool_allocator.html#aa1d5b36c67611937e8ad6b2be53a483e">~MemoryPoolAllocator</a> ()</td></tr>
<tr class="memdesc:aa1d5b36c67611937e8ad6b2be53a483e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Destructor.  <a href="#aa1d5b36c67611937e8ad6b2be53a483e">更多...</a><br /></td></tr>
<tr class="separator:aa1d5b36c67611937e8ad6b2be53a483e"><td class="memSeparator" colspan="2">&#160;</td></tr>
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void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classrapidjson_1_1_memory_pool_allocator.html#aa050d52c62503ca6d6f66289ce83a18e">Clear</a> ()</td></tr>
<tr class="memdesc:aa050d52c62503ca6d6f66289ce83a18e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Deallocates all memory chunks, excluding the user-supplied buffer. <br /></td></tr>
<tr class="separator:aa050d52c62503ca6d6f66289ce83a18e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:acdf0fc08cbcd940205a0a6289f1c58bd"><td class="memItemLeft" align="right" valign="top">size_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classrapidjson_1_1_memory_pool_allocator.html#acdf0fc08cbcd940205a0a6289f1c58bd">Capacity</a> () const</td></tr>
<tr class="memdesc:acdf0fc08cbcd940205a0a6289f1c58bd"><td class="mdescLeft">&#160;</td><td class="mdescRight">Computes the total capacity of allocated memory chunks.  <a href="#acdf0fc08cbcd940205a0a6289f1c58bd">更多...</a><br /></td></tr>
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<tr class="memitem:aa08b368c54e7643fcd23ef55139b9b40"><td class="memItemLeft" align="right" valign="top">size_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classrapidjson_1_1_memory_pool_allocator.html#aa08b368c54e7643fcd23ef55139b9b40">Size</a> () const</td></tr>
<tr class="memdesc:aa08b368c54e7643fcd23ef55139b9b40"><td class="mdescLeft">&#160;</td><td class="mdescRight">Computes the memory blocks allocated.  <a href="#aa08b368c54e7643fcd23ef55139b9b40">更多...</a><br /></td></tr>
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void *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classrapidjson_1_1_memory_pool_allocator.html#a208c29e04b1d748bfe068444b7044344">Malloc</a> (size_t size)</td></tr>
<tr class="memdesc:a208c29e04b1d748bfe068444b7044344"><td class="mdescLeft">&#160;</td><td class="mdescRight">Allocates a memory block. (concept <a class="el" href="classrapidjson_1_1_allocator.html" title="Concept for allocating, resizing and freeing memory block. ">Allocator</a>) <br /></td></tr>
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void *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classrapidjson_1_1_memory_pool_allocator.html#a880524b17bbecb5d2691b8075050d55d">Realloc</a> (void *originalPtr, size_t originalSize, size_t newSize)</td></tr>
<tr class="memdesc:a880524b17bbecb5d2691b8075050d55d"><td class="mdescLeft">&#160;</td><td class="mdescRight">Resizes a memory block (concept <a class="el" href="classrapidjson_1_1_allocator.html" title="Concept for allocating, resizing and freeing memory block. ">Allocator</a>) <br /></td></tr>
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静态 Public 成员函数</h2></td></tr>
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static void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classrapidjson_1_1_memory_pool_allocator.html#a9470dfeaeef3b3775249df2223129a2b">Free</a> (void *ptr)</td></tr>
<tr class="memdesc:a9470dfeaeef3b3775249df2223129a2b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Frees a memory block (concept <a class="el" href="classrapidjson_1_1_allocator.html" title="Concept for allocating, resizing and freeing memory block. ">Allocator</a>) <br /></td></tr>
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静态 Public 属性</h2></td></tr>
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static const bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classrapidjson_1_1_memory_pool_allocator.html#a2606d96e19bcfc9d4bf58aefe55c1b29">kNeedFree</a> = false</td></tr>
<tr class="memdesc:a2606d96e19bcfc9d4bf58aefe55c1b29"><td class="mdescLeft">&#160;</td><td class="mdescRight">Tell users that no need to call <a class="el" href="classrapidjson_1_1_memory_pool_allocator.html#a9470dfeaeef3b3775249df2223129a2b" title="Frees a memory block (concept Allocator) ">Free()</a> with this allocator. (concept <a class="el" href="classrapidjson_1_1_allocator.html" title="Concept for allocating, resizing and freeing memory block. ">Allocator</a>) <br /></td></tr>
<tr class="separator:a2606d96e19bcfc9d4bf58aefe55c1b29"><td class="memSeparator" colspan="2">&#160;</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 BaseAllocator = CrtAllocator&gt;<br />
class rapidjson::MemoryPoolAllocator&lt; BaseAllocator &gt;</h3>

<p>Default memory allocator used by the parser and DOM. </p>
<p>This allocator allocate memory blocks from pre-allocated memory chunks.</p>
<p>It does not free memory blocks. And <a class="el" href="classrapidjson_1_1_memory_pool_allocator.html#a880524b17bbecb5d2691b8075050d55d" title="Resizes a memory block (concept Allocator) ">Realloc()</a> only allocate new memory.</p>
<p>The memory chunks are allocated by BaseAllocator, which is <a class="el" href="classrapidjson_1_1_crt_allocator.html" title="C-runtime library allocator. ">CrtAllocator</a> by default.</p>
<p>User may also supply a buffer as the first chunk.</p>
<p>If the user-buffer is full then additional chunks are allocated by BaseAllocator.</p>
<p>The user-buffer is not deallocated by this allocator.</p>
<dl class="tparams"><dt>模板参数</dt><dd>
  <table class="tparams">
    <tr><td class="paramname">BaseAllocator</td><td>the allocator type for allocating memory chunks. Default is <a class="el" href="classrapidjson_1_1_crt_allocator.html" title="C-runtime library allocator. ">CrtAllocator</a>. </td></tr>
  </table>
  </dd>
</dl>
<dl class="section note"><dt>注解</dt><dd>implements <a class="el" href="classrapidjson_1_1_allocator.html" title="Concept for allocating, resizing and freeing memory block. ">Allocator</a> concept </dd></dl>
</div><h2 class="groupheader">构造及析构函数说明</h2>
<a id="a59d783f4feba17dcd35d9f25fcbc09f4"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a59d783f4feba17dcd35d9f25fcbc09f4">&#9670;&nbsp;</a></span>MemoryPoolAllocator() <span class="overload">[1/2]</span></h2>

<div class="memitem">
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<div class="memtemplate">
template&lt;typename BaseAllocator  = CrtAllocator&gt; </div>
<table class="mlabels">
  <tr>
  <td class="mlabels-left">
      <table class="memname">
        <tr>
          <td class="memname"><a class="el" href="classrapidjson_1_1_memory_pool_allocator.html">rapidjson::MemoryPoolAllocator</a>&lt; BaseAllocator &gt;::<a class="el" href="classrapidjson_1_1_memory_pool_allocator.html">MemoryPoolAllocator</a> </td>
          <td>(</td>
          <td class="paramtype">size_t&#160;</td>
          <td class="paramname"><em>chunkSize</em> = <code>kDefaultChunkCapacity</code>, </td>
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  <td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span></span>  </td>
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<p>Constructor with chunkSize. </p>
<dl class="params"><dt>参数</dt><dd>
  <table class="params">
    <tr><td class="paramname">chunkSize</td><td>The size of memory chunk. The default is kDefaultChunkSize. </td></tr>
    <tr><td class="paramname">baseAllocator</td><td>The allocator for allocating memory chunks. </td></tr>
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  </dd>
</dl>

</div>
</div>
<a id="abcc572bdb6902c9d69711540db5098a7"></a>
<h2 class="memtitle"><span class="permalink"><a href="#abcc572bdb6902c9d69711540db5098a7">&#9670;&nbsp;</a></span>MemoryPoolAllocator() <span class="overload">[2/2]</span></h2>

<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template&lt;typename BaseAllocator  = CrtAllocator&gt; </div>
<table class="mlabels">
  <tr>
  <td class="mlabels-left">
      <table class="memname">
        <tr>
          <td class="memname"><a class="el" href="classrapidjson_1_1_memory_pool_allocator.html">rapidjson::MemoryPoolAllocator</a>&lt; BaseAllocator &gt;::<a class="el" href="classrapidjson_1_1_memory_pool_allocator.html">MemoryPoolAllocator</a> </td>
          <td>(</td>
          <td class="paramtype">void *&#160;</td>
          <td class="paramname"><em>buffer</em>, </td>
        </tr>
        <tr>
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          <td>)</td>
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  <td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span></span>  </td>
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<p>Constructor with user-supplied buffer. </p>
<p>The user buffer will be used firstly. When it is full, memory pool allocates new chunk with chunk size.</p>
<p>The user buffer will not be deallocated when this allocator is destructed.</p>
<dl class="params"><dt>参数</dt><dd>
  <table class="params">
    <tr><td class="paramname">buffer</td><td>User supplied buffer. </td></tr>
    <tr><td class="paramname">size</td><td>Size of the buffer in bytes. It must at least larger than sizeof(ChunkHeader). </td></tr>
    <tr><td class="paramname">chunkSize</td><td>The size of memory chunk. The default is kDefaultChunkSize. </td></tr>
    <tr><td class="paramname">baseAllocator</td><td>The allocator for allocating memory chunks. </td></tr>
  </table>
  </dd>
</dl>

</div>
</div>
<a id="aa1d5b36c67611937e8ad6b2be53a483e"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aa1d5b36c67611937e8ad6b2be53a483e">&#9670;&nbsp;</a></span>~MemoryPoolAllocator()</h2>

<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template&lt;typename BaseAllocator  = CrtAllocator&gt; </div>
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          <td class="memname"><a class="el" href="classrapidjson_1_1_memory_pool_allocator.html">rapidjson::MemoryPoolAllocator</a>&lt; BaseAllocator &gt;::~<a class="el" href="classrapidjson_1_1_memory_pool_allocator.html">MemoryPoolAllocator</a> </td>
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<p>Destructor. </p>
<p>This deallocates all memory chunks, excluding the user-supplied buffer. </p>

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<h2 class="groupheader">成员函数说明</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#acdf0fc08cbcd940205a0a6289f1c58bd">&#9670;&nbsp;</a></span>Capacity()</h2>

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template&lt;typename BaseAllocator  = CrtAllocator&gt; </div>
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<p>Computes the total capacity of allocated memory chunks. </p>
<dl class="section return"><dt>返回</dt><dd>total capacity in bytes. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#aa08b368c54e7643fcd23ef55139b9b40">&#9670;&nbsp;</a></span>Size()</h2>

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template&lt;typename BaseAllocator  = CrtAllocator&gt; </div>
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<p>Computes the memory blocks allocated. </p>
<dl class="section return"><dt>返回</dt><dd>total used bytes. </dd></dl>

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<hr/>该类的文档由以下文件生成:<ul>
<li>include/rapidjson/<a class="el" href="allocators_8h_source.html">allocators.h</a></li>
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