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112 lines
3.8 KiB
HTML
112 lines
3.8 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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<title>带超时机制的信号等待</title>
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</head>
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<body class="docs"><div id="layout">
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<div id="layout-content"><div id="function.pcntl-sigtimedwait" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">pcntl_sigtimedwait</h1>
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<p class="verinfo">(PHP 5 >= 5.3.0, PHP 7)</p><p class="refpurpose"><span class="refname">pcntl_sigtimedwait</span> — <span class="dc-title">带超时机制的信号等待</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.pcntl-sigtimedwait-description">
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<h3 class="title">说明</h3>
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<div class="methodsynopsis dc-description">
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<span class="methodname"><strong>pcntl_sigtimedwait</strong></span>
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( <span class="methodparam"><span class="type">array</span> <code class="parameter">$set</code></span>
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[, <span class="methodparam"><span class="type">array</span> <code class="parameter reference">&$siginfo</code></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$seconds</code><span class="initializer"> = 0</span></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$nanoseconds</code><span class="initializer"> = 0</span></span>
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]]] ) : <span class="type">int</span></div>
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<p class="para rdfs-comment">
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函数<span class="function"><strong>pcntl_sigtimedwait()</strong></span>实际上与<span class="function"><a href="pcntl_sigwaitinfo.html" class="function">pcntl_sigwaitinfo()</a></span>
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的行为一致，不同在于它多了两个增强参数<code class="parameter">seconds</code>和
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<code class="parameter">nanoseconds</code>，这使得脚本等待的事件有了一个时间的上限。
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.pcntl-sigtimedwait-parameters">
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<h3 class="title">参数</h3>
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<p class="para">
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<dl>
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<dt>
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<code class="parameter">set</code></dt>
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<dd>
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<p class="para">
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要等待的信号列表数组。
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</p>
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</dd>
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<dt>
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<code class="parameter">siginfo</code></dt>
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<dd>
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<p class="para">
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<code class="parameter">siginfo</code>是一个输出参数，用来返回信号的信息。更详细情况参见
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<span class="function"><a href="pcntl_sigwaitinfo.html" class="function">pcntl_sigwaitinfo()</a></span>。
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</p>
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</dd>
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<dt>
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<code class="parameter">seconds</code></dt>
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<dd>
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<p class="para">
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超时秒数。
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</p>
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</dd>
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<dt>
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<code class="parameter">nanoseconds</code></dt>
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<dd>
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<p class="para">
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超时纳秒数。
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</p>
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</dd>
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</dl>
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</p>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.pcntl-sigtimedwait-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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成功时，函数<span class="function"><strong>pcntl_sigtimedwait()</strong></span>返回信号编号。
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</p>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.pcntl-sigtimedwait-seealso">
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<h3 class="title">参见</h3>
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<p class="para">
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<ul class="simplelist">
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<li class="member"><span class="function"><a href="pcntl_sigprocmask.html" class="function" rel="rdfs-seeAlso">pcntl_sigprocmask()</a> - 设置或检索阻塞信号</span></li>
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<li class="member"><span class="function"><a href="pcntl_sigwaitinfo.html" class="function" rel="rdfs-seeAlso">pcntl_sigwaitinfo()</a> - 等待信号</span></li>
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</ul>
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</p>
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</div>
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</div></div></div></body></html> |