139 lines
7.3 KiB
HTML
139 lines
7.3 KiB
HTML
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<title>std::pmr::monotonic_buffer_resource</title>
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_memory_monotonic_buffer_resource skin-cppreference2 action-view cpp-navbar">
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::pmr::</span>monotonic_buffer_resource</h1>
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-memory.html">memory</a></span></div>
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<div>定义于头文件 <code><a href="cpp-header-memory_resource.html"><memory_resource></a></code></div>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">class</span> monotonic_buffer_resource <span class="sy4">:</span> <span class="kw1">public</span> <a href="cpp-memory-memory_resource.html"><span class="kw708">std::<span class="me2">pmr</span><span class="sy4">::</span><span class="me2">memory_resource</span></span></a><span class="sy4">;</span></span></div>
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<td><span class="t-mark-rev t-since-cxx17">(C++17 起)</span></td>
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<p>类 <code>std::pmr::monotonic_buffer_resource</code> 是特定目的的内存资源类，它仅在销毁资源时释放分配的内存。它的意图是提供非常快速的内存分配，在内存用于分配少量对象，并于之后一次释放的情况下。</p>
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<p><code>monotonic_buffer_resource</code> 能以初始缓冲区构造，若无初始缓冲，或缓冲用尽，则从构造时提供的<i>上游分配器</i>分配缓冲区。缓冲区的大小以几何级数增长。</p>
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<p><code>monotonic_buffer_resource</code> 不是线程安全的。</p>
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<h3><span class="mw-headline" id=".E6.88.90.E5.91.98.E5.87.BD.E6.95.B0">成员函数</span></h3>
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<div><a href="cpp-memory-monotonic_buffer_resource-monotonic_buffer_resource.html"><span class="t-lines"><span>(构造函数)</span></span></a></div>
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<td>构造一个 <code>monotonic_buffer_resource</code><br />
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<span class="t-mark">(公开成员函数)</span></td>
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<div class="t-dsc-member-div t-dsc-member-nobold-div">
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<div><a href="cpp-memory-monotonic_buffer_resource-~monotonic_buffer_resource.html"><span class="t-lines"><span>(析构函数)</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-cmark">[虚]</span></span></span></div>
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<td>销毁一个 <code>monotonic_buffer_resource</code> ，释放所有分配的内存<br />
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<span class="t-mark">(虚公开成员函数)</span></td>
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<div><span class="t-lines"><span>operator=</span></span></div>
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<div><span class="t-lines"><span><span class="t-cmark">[被删除]</span></span></span></div>
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<td>复制赋值运算符被删除。 <code>monotonic_buffer_resource</code> 不可复制赋值<br />
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<span class="t-mark">(公开成员函数)</span></td>
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<h5><span class="mw-headline" id=".E5.85.AC.E5.BC.80.E6.88.90.E5.91.98.E5.87.BD.E6.95.B0">公开成员函数</span></h5>
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<div><a href="cpp-memory-monotonic_buffer_resource-release.html"><span class="t-lines"><span>release</span></span></a></div>
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<td>释放所有分配的内存<br />
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<span class="t-mark">(公开成员函数)</span></td>
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<div><a href="cpp-memory-monotonic_buffer_resource-upstream_resource.html"><span class="t-lines"><span>upstream_resource</span></span></a></div>
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<td>返回指向上游 memory_resource 的指针<br />
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<span class="t-mark">(公开成员函数)</span></td>
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<h5><span class="mw-headline" id=".E5.8F.97.E4.BF.9D.E6.8A.A4.E6.88.90.E5.91.98.E5.87.BD.E6.95.B0">受保护成员函数</span></h5>
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<div><a href="cpp-memory-monotonic_buffer_resource-do_allocate.html"><span class="t-lines"><span>do_allocate</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-cmark">[虚]</span></span></span></div>
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<td>分配内存<br />
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<span class="t-mark">(虚受保护成员函数)</span></td>
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<div><a href="cpp-memory-monotonic_buffer_resource-do_deallocate.html"><span class="t-lines"><span>do_deallocate</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-cmark">[虚]</span></span></span></div>
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<td>无操作<br />
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<span class="t-mark">(虚受保护成员函数)</span></td>
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<div><a href="cpp-memory-monotonic_buffer_resource-do_is_equal.html"><span class="t-lines"><span>do_is_equal</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-cmark">[虚]</span></span></span></div>
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</td>
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<td>与另一 <span class="t-lc"><a href="cpp-memory-memory_resource.html">std::pmr::memory_resource</a></span> 比较相等性<br />
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<span class="t-mark">(虚受保护成员函数)</span></td>
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