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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>Return a number upper than zero if there are pending events</title>
</head>
<body class="docs"><div id="layout">
<div id="layout-content"><div id="function.inotify-queue-len" class="refentry">
<div class="refnamediv">
<h1 class="refname">inotify_queue_len</h1>
<p class="verinfo">(PECL inotify &gt;= 0.1.2)</p><p class="refpurpose"><span class="refname">inotify_queue_len</span> &mdash; <span class="dc-title">Return a number upper than zero if there are pending events</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.inotify-queue-len-description">
<h3 class="title">说明</h3>
<div class="methodsynopsis dc-description">
<span class="methodname"><strong>inotify_queue_len</strong></span>
( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$inotify_instance</code></span>
) : <span class="type">int</span></div>
<p class="para rdfs-comment">
This function allows to know if <span class="function"><a href="inotify_read.html" class="function">inotify_read()</a></span> will block or not.
If a number upper than zero is returned, there are pending events and
<span class="function"><a href="inotify_read.html" class="function">inotify_read()</a></span> will not block.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.inotify-queue-len-parameters">
<h3 class="title">参数</h3>
<p class="para">
<dl>
<dt>
<code class="parameter">inotify_instance</code></dt>
<dd>
<p class="para">
<span class="function"><a href="inotify_init.html" class="function">inotify_init()</a></span>返回的资源
</p>
</dd>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.inotify-queue-len-returnvalues">
<h3 class="title">返回值</h3>
<p class="para">
Returns a number upper than zero if there are pending events.
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.inotify-queue-len-seealso">
<h3 class="title">参见</h3>
<p class="para">
<ul class="simplelist">
<li class="member"><span class="function"><a href="inotify_init.html" class="function" rel="rdfs-seeAlso">inotify_init()</a> - Initialize an inotify instance</span></li>
<li class="member"><span class="function"><a href="stream_select.html" class="function" rel="rdfs-seeAlso">stream_select()</a> - Runs the equivalent of the select() system call on the given
arrays of streams with a timeout specified by tv_sec and tv_usec</span></li>
<li class="member"><span class="function"><a href="stream_set_blocking.html" class="function" rel="rdfs-seeAlso">stream_set_blocking()</a> - 为资源流设置阻塞或者阻塞模式</span></li>
</ul>
</p>
</div>
</div></div></div></body></html>