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<li class="navelem"><a class="el" href="namespacetsl.html">tsl</a></li><li class="navelem"><b>ah</b></li><li class="navelem"><a class="el" href="classtsl_1_1ah_1_1power__of__two__growth__policy.html">power_of_two_growth_policy</a></li>  </ul>
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<a href="#pub-methods">Public 成员函数</a> &#124;
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<div class="title">tsl::ah::power_of_two_growth_policy&lt; GrowthFactor &gt; 模板类 参考</div>  </div>
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<p><code>#include &lt;<a class="el" href="array__growth__policy_8h_source.html">array_growth_policy.h</a>&gt;</code></p>
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Public 成员函数</h2></td></tr>
<tr class="memitem:a0a10cf1f87f76dc2254fbd97152fafd7"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classtsl_1_1ah_1_1power__of__two__growth__policy.html#a0a10cf1f87f76dc2254fbd97152fafd7">power_of_two_growth_policy</a> (std::size_t &amp;min_bucket_count_in_out)</td></tr>
<tr class="separator:a0a10cf1f87f76dc2254fbd97152fafd7"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a58c8859eb849b312919e964b3cf0672e"><td class="memItemLeft" align="right" valign="top">std::size_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classtsl_1_1ah_1_1power__of__two__growth__policy.html#a58c8859eb849b312919e964b3cf0672e">bucket_for_hash</a> (std::size_t hash) const noexcept</td></tr>
<tr class="separator:a58c8859eb849b312919e964b3cf0672e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a4313be750fd9062f0b104e7d69e8e533"><td class="memItemLeft" align="right" valign="top">std::size_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classtsl_1_1ah_1_1power__of__two__growth__policy.html#a4313be750fd9062f0b104e7d69e8e533">next_bucket_count</a> () const </td></tr>
<tr class="separator:a4313be750fd9062f0b104e7d69e8e533"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a48d9bdb9c10caf6771069660d1608d40"><td class="memItemLeft" align="right" valign="top">std::size_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classtsl_1_1ah_1_1power__of__two__growth__policy.html#a48d9bdb9c10caf6771069660d1608d40">max_bucket_count</a> () const </td></tr>
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<tr class="memitem:a974dc74b65f9449d21ddd53a7cbc9982"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classtsl_1_1ah_1_1power__of__two__growth__policy.html#a974dc74b65f9449d21ddd53a7cbc9982">clear</a> () noexcept</td></tr>
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Protected 属性</h2></td></tr>
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std::size_t&#160;</td><td class="memItemRight" valign="bottom"><b>m_mask</b></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;std::size_t GrowthFactor&gt;<br />
class tsl::ah::power_of_two_growth_policy&lt; GrowthFactor &gt;</h3>

<p>Grow the hash table by a factor of GrowthFactor keeping the bucket count to a power of two. It allows the table to use a mask operation instead of a modulo operation to map a hash to a bucket.</p>
<p>GrowthFactor must be a power of two &gt;= 2. </p>
</div><h2 class="groupheader">构造及析构函数说明</h2>
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template&lt;std::size_t GrowthFactor&gt; </div>
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          <td class="memname"><a class="el" href="classtsl_1_1ah_1_1power__of__two__growth__policy.html">tsl::ah::power_of_two_growth_policy</a>&lt; GrowthFactor &gt;::<a class="el" href="classtsl_1_1ah_1_1power__of__two__growth__policy.html">power_of_two_growth_policy</a> </td>
          <td>(</td>
          <td class="paramtype">std::size_t &amp;&#160;</td>
          <td class="paramname"><em>min_bucket_count_in_out</em></td><td>)</td>
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<p>Called on the hash table creation and on rehash. The number of buckets for the table is passed in parameter. This number is a minimum, the policy may update this value with a higher value if needed (but not lower).</p>
<p>If 0 is given, min_bucket_count_in_out must still be 0 after the policy creation and bucket_for_hash must always return 0 in this case. </p>

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函数调用图:</div>
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<div class="center"><img src="classtsl_1_1ah_1_1power__of__two__growth__policy_a0a10cf1f87f76dc2254fbd97152fafd7_cgraph.png" border="0" usemap="#classtsl_1_1ah_1_1power__of__two__growth__policy_a0a10cf1f87f76dc2254fbd97152fafd7_cgraph" alt=""/></div>
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</map>
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<h2 class="groupheader">成员函数说明</h2>
<a class="anchor" id="a58c8859eb849b312919e964b3cf0672e"></a>
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template&lt;std::size_t GrowthFactor&gt; </div>
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          <td class="memname">std::size_t <a class="el" href="classtsl_1_1ah_1_1power__of__two__growth__policy.html">tsl::ah::power_of_two_growth_policy</a>&lt; GrowthFactor &gt;::bucket_for_hash </td>
          <td>(</td>
          <td class="paramtype">std::size_t&#160;</td>
          <td class="paramname"><em>hash</em></td><td>)</td>
          <td> const</td>
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<p>Return the bucket [0, bucket_count()) to which the hash belongs. If bucket_count() is 0, it must always return 0. </p>

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template&lt;std::size_t GrowthFactor&gt; </div>
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          <td class="memname">void <a class="el" href="classtsl_1_1ah_1_1power__of__two__growth__policy.html">tsl::ah::power_of_two_growth_policy</a>&lt; GrowthFactor &gt;::clear </td>
          <td>(</td>
          <td class="paramname"></td><td>)</td>
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<p>Reset the growth policy as if it was created with a bucket count of 0. After a clear, the policy must always return 0 when bucket_for_hash is called. </p>

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template&lt;std::size_t GrowthFactor&gt; </div>
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          <td class="memname">std::size_t <a class="el" href="classtsl_1_1ah_1_1power__of__two__growth__policy.html">tsl::ah::power_of_two_growth_policy</a>&lt; GrowthFactor &gt;::max_bucket_count </td>
          <td>(</td>
          <td class="paramname"></td><td>)</td>
          <td> const</td>
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<p>Return the maximum number of buckets supported by the policy. </p>

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这是这个函数的调用关系图:</div>
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<div class="center"><img src="classtsl_1_1ah_1_1power__of__two__growth__policy_a48d9bdb9c10caf6771069660d1608d40_icgraph.png" border="0" usemap="#classtsl_1_1ah_1_1power__of__two__growth__policy_a48d9bdb9c10caf6771069660d1608d40_icgraph" alt=""/></div>
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          <td class="memname">std::size_t <a class="el" href="classtsl_1_1ah_1_1power__of__two__growth__policy.html">tsl::ah::power_of_two_growth_policy</a>&lt; GrowthFactor &gt;::next_bucket_count </td>
          <td>(</td>
          <td class="paramname"></td><td>)</td>
          <td> const</td>
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<p>Return the number of buckets that should be used on next growth. </p>

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函数调用图:</div>
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<div class="center"><img src="classtsl_1_1ah_1_1power__of__two__growth__policy_a4313be750fd9062f0b104e7d69e8e533_cgraph.png" border="0" usemap="#classtsl_1_1ah_1_1power__of__two__growth__policy_a4313be750fd9062f0b104e7d69e8e533_cgraph" alt=""/></div>
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<hr/>该类的文档由以下文件生成:<ul>
<li>src/hat-trie/include/tsl/array-hash/<a class="el" href="array__growth__policy_8h_source.html">array_growth_policy.h</a></li>
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