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82 lines
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82 lines
4.9 KiB
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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<title>Can be to be called whenever there are pending requests that need finishing</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.eio-poll" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">eio_poll</h1>
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<p class="verinfo">(PECL eio >= 0.0.1dev)</p><p class="refpurpose"><span class="refname">eio_poll</span> — <span class="dc-title">Can be to be called whenever there are pending requests that need finishing</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.eio-poll-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>eio_poll</strong></span>
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( <span class="methodparam">void</span>
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) : <span class="type">int</span></div>
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<p class="para rdfs-comment">
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<span class="function"><strong>eio_poll()</strong></span> can be used to implement special event loop.
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For this <span class="function"><a href="eio_nreqs.html" class="function">eio_nreqs()</a></span> could be used to test if there are
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unprocessed requests.
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</p>
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<blockquote class="note"><p><strong class="note">Note</strong>: <p class="para">Applicable only when implementing userspace event loop.</p></p></blockquote>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.eio-poll-parameters">
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<h3 class="title">参数</h3>
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<p class="para">此函数没有参数。</p>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.eio-poll-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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If any request invocation returns a non-zero value, returns that value.
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Otherwise, it returns <strong><code>0</code></strong>.
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.eio-poll-examples">
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<h3 class="title">范例</h3>
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<div class="example" id="example-4282">
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<p><strong>Example #1 <span class="function"><strong>eio_poll()</strong></span> example</strong></p>
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<div class="example-contents">
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<div class="phpcode"><pre><span style="color: #000000">
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<span style="color: #0000BB"><?php<br /></span><span style="color: #007700">function </span><span style="color: #0000BB">res_cb</span><span style="color: #007700">(</span><span style="color: #0000BB">$data</span><span style="color: #007700">, </span><span style="color: #0000BB">$result</span><span style="color: #007700">) {<br /> </span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$data</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">);<br />}<br /><br /></span><span style="color: #0000BB">eio_nop</span><span style="color: #007700">(</span><span style="color: #0000BB">EIO_PRI_DEFAULT</span><span style="color: #007700">, </span><span style="color: #DD0000">"res_cb"</span><span style="color: #007700">, </span><span style="color: #DD0000">"1"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">eio_nop</span><span style="color: #007700">(</span><span style="color: #0000BB">EIO_PRI_DEFAULT</span><span style="color: #007700">, </span><span style="color: #DD0000">"res_cb"</span><span style="color: #007700">, </span><span style="color: #DD0000">"2"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">eio_nop</span><span style="color: #007700">(</span><span style="color: #0000BB">EIO_PRI_DEFAULT</span><span style="color: #007700">, </span><span style="color: #DD0000">"res_cb"</span><span style="color: #007700">, </span><span style="color: #DD0000">"3"</span><span style="color: #007700">);<br /><br />while (</span><span style="color: #0000BB">eio_nreqs</span><span style="color: #007700">()) {<br /> </span><span style="color: #FF8000">// Some specific IPC or so<br /> </span><span style="color: #0000BB">eio_poll</span><span style="color: #007700">();<br />}<br /></span><span style="color: #0000BB">?></span>
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</span>
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</pre></div>
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</div>
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<div class="example-contents"><p>以上例程的输出类似于：</p></div>
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<div class="example-contents screen">
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<div class="cdata"><pre>
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string(1) "1"
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int(0)
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string(1) "3"
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int(0)
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string(1) "2"
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int(0)
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</pre></div>
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</div>
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</div>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.eio-poll-seealso">
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<h3 class="title">参见</h3>
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<ul class="simplelist">
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<li class="member">eio_nreqs</li>
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</ul>
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</div>
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</div></div></div></body></html> |