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<title>std::pmr::unsynchronized_pool_resource::do_allocate</title>
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::pmr::unsynchronized_pool_resource::</span>do_allocate</h1>
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<div id="contentSub"><span class="subpages">&lt; <a href="cpp.html">cpp</a>&lrm; | <a href="cpp-memory.html">memory</a>&lrm; | <a href="cpp-memory-unsynchronized_pool_resource.html">unsynchronized pool resource</a></span></div>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">virtual</span> <span class="kw4">void</span><span class="sy2">*</span> do_allocate<span class="br0">(</span><a href="cpp-types-size_t.html"><span class="kw100">std::<span class="me2">size_t</span></span></a> bytes, <a href="cpp-types-size_t.html"><span class="kw100">std::<span class="me2">size_t</span></span></a> alignment<span class="br0">)</span><span class="sy4">;</span></span></div>
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<td><span class="t-mark-rev t-since-cxx17">(C++17 &#36215;)</span></td>
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<p>&#20998;&#37197;&#23384;&#20648;&#12290;</p>
<p>&#33509;&#20026; <code>bytes</code> &#22823;&#23567;&#30340;&#22359;&#25152;&#36873;&#30340;&#27744;&#19981;&#36275;&#20197;&#28385;&#36275;&#26469;&#33258;&#20854;&#20869;&#37096;&#25968;&#25454;&#32467;&#26500;&#30340;&#35831;&#27714;&#65292;&#21017;&#35843;&#29992;&#19978;&#28216; memory_resources &#19978;&#30340; <code>allocate()</code> &#20197;&#33719;&#24471;&#20869;&#23384;&#12290;</p>
<p>&#33509;&#35831;&#27714;&#30340;&#22823;&#23567;&#22823;&#20110;&#26368;&#22823;&#30340;&#27744;&#25152;&#33021;&#22788;&#29702;&#32773;&#65292;&#21017;&#36890;&#36807;&#35843;&#29992;&#19978;&#28216; memory_resources &#19978;&#30340; <code>allocate()</code> &#20998;&#37197;&#20869;&#23384;&#12290;</p>
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<p>&#25351;&#21521;&#33267;&#23569;&#26377; <code>bytes</code> &#23383;&#33410;&#22823;&#23567;&#65292;&#33509;&#25903;&#25345;&#36825;&#31181;&#23545;&#40784;&#21017;&#23545;&#40784;&#21040;&#25351;&#23450;&#30340; <code>alignment</code> &#65292;&#21542;&#21017;&#23545;&#40784;&#21040; <span class="t-c"><span class="mw-geshi cpp source-cpp">alignof<span class="br0">(</span><a href="cpp-types-max_align_t.html"><span class="kw104">std::<span class="me2">max_align_t</span></span></a><span class="br0">)</span></span></span> &#30340;&#34987;&#20998;&#37197;&#23384;&#20648;&#12290;</p>
<h3><span class="mw-headline" id=".E5.BC.82.E5.B8.B8">&#24322;&#24120;</span></h3>
<p>&#38500;&#38750;&#19978;&#28216;&#20869;&#23384;&#36164;&#28304;&#19978;&#30340; <code>allocate()</code> &#35843;&#29992;&#25243;&#20986;&#24322;&#24120;&#65292;&#21542;&#21017;&#19981;&#25243;&#20986;&#12290;</p>
<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">&#21442;&#38405;</span></h3>
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<div><a href="cpp-memory-memory_resource-allocate.html"><span class="t-lines"><span>allocate</span></span></a></div>
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<td>&#20998;&#37197;&#20869;&#23384;<br />
<span class="t-mark">(<code>std::pmr::memory_resource</code> &#30340;&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
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<div><a href="cpp-memory-memory_resource-do_allocate.html"><span class="t-lines"><span>do_allocate</span></span></a></div>
<div><span class="t-lines"><span><span class="t-cmark">[&#34394;]</span></span></span></div>
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<td>&#20998;&#37197;&#20869;&#23384;<br />
<span class="t-mark">(<code>std::pmr::memory_resource</code> &#30340;&#34394;&#31169;&#26377;&#25104;&#21592;&#20989;&#25968;)</span></td>
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