87 lines
3.6 KiB
HTML
87 lines
3.6 KiB
HTML
<!DOCTYPE html>
|
|
<html lang="zh" dir="ltr" class="client-nojs" xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh">
|
|
<head><meta http-equiv="x-ua-compatible" content="ie=edge">
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
|
|
<title>ATOMIC_*_LOCK_FREE</title>
|
|
<link rel="stylesheet" href="ext.css" />
|
|
<link rel="stylesheet" href="site_modules.css" />
|
|
</head>
|
|
<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-c_atomic_ATOMIC_LOCK_FREE_consts skin-cppreference2 action-view cpp-navbar">
|
|
<div id="cpp-content-base">
|
|
<div id="content"><a id="top"></a>
|
|
<h1 id="firstHeading" class="firstHeading">ATOMIC_*_LOCK_FREE</h1>
|
|
<div id="bodyContent">
|
|
<div id="contentSub"><span class="subpages">< <a href="c.html">c</a>‎ | <a href="c-atomic.html">atomic</a></span></div>
|
|
<div id="mw-content-text" lang="zh" dir="ltr" class="mw-content-ltr" xml:lang="zh">
|
|
<table class="t-dcl-begin">
|
|
<tbody>
|
|
<tr class="t-dsc-header">
|
|
<td>
|
|
<div>定义于头文件 <code><stdatomic.h></code></div>
|
|
</td>
|
|
<td></td>
|
|
<td></td>
|
|
</tr>
|
|
<tr class="t-dcl t-since-c11">
|
|
<td>
|
|
<div><span class="mw-geshi c source-c"><span class="co2">#define ATOMIC_BOOL_LOCK_FREE /* implementation-defined */</span><br /></span>
|
|
<p><span class="co2">#define ATOMIC_CHAR_LOCK_FREE /* implementation-defined */</span><br />
|
|
<span class="co2">#define ATOMIC_CHAR16_T_LOCK_FREE /* implementation-defined */</span><br />
|
|
<span class="co2">#define ATOMIC_CHAR32_T_LOCK_FREE /* implementation-defined */</span><br />
|
|
<span class="co2">#define ATOMIC_WCHAR_T_LOCK_FREE /* implementation-defined */</span><br />
|
|
<span class="co2">#define ATOMIC_SHORT_LOCK_FREE /* implementation-defined */</span><br />
|
|
<span class="co2">#define ATOMIC_INT_LOCK_FREE /* implementation-defined */</span><br />
|
|
<span class="co2">#define ATOMIC_LONG_LOCK_FREE /* implementation-defined */</span><br />
|
|
<span class="co2">#define ATOMIC_LLONG_LOCK_FREE /* implementation-defined */</span><br /></p>
|
|
<span class="co2">#define ATOMIC_POINTER_LOCK_FREE /* implementation-defined */</span></div>
|
|
</td>
|
|
<td class="t-dcl-nopad"></td>
|
|
<td><span class="t-mark-rev t-since-c11">(C11 起)</span></td>
|
|
</tr>
|
|
<tr class="t-dcl-sep">
|
|
<td></td>
|
|
<td></td>
|
|
<td></td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<p>展开成求值为 <code>0</code> 或 <code>1</code> 或 <code>2</code> 的<a href="c-language-constant_expression.html">预处理器常量表达式</a>，它指示对应<a href="c-atomic.html">原子类型</a>（有符号及无符号一同）的免锁属性。</p>
|
|
<table class="t-dsc-begin">
|
|
<tr class="t-dsc-hitem">
|
|
<td>值</td>
|
|
<td>解释</td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td><code>0</code></td>
|
|
<td>该原子类型决不免锁</td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td><code>1</code></td>
|
|
<td>该原子类型有时免锁</td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td><code>2</code></td>
|
|
<td>该原子类型始终免锁</td>
|
|
</tr>
|
|
</table>
|
|
<h3><span class="mw-headline" id=".E5.BC.95.E7.94.A8">引用</span></h3>
|
|
<div class="t-ref-std-11">
|
|
<ul>
|
|
<li>C11 标准（ISO/IEC 9899:2011）：</li>
|
|
</ul>
|
|
<dl>
|
|
<dd>
|
|
<ul>
|
|
<li>7.17.1/3 atomic lock-free macros (p: 273)</li>
|
|
</ul>
|
|
</dd>
|
|
</dl>
|
|
</div>
|
|
</div>
|
|
<div class="visualClear"></div>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
</body>
|
|
</html>
|