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72 lines
7.7 KiB
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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<title>Get stream representing a variable used in internal communications with libeio</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-get-event-stream" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">eio_get_event_stream</h1>
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<p class="verinfo">(PECL eio >= 0.3.1b)</p><p class="refpurpose"><span class="refname">eio_get_event_stream</span> — <span class="dc-title">Get stream representing a variable used in internal communications with libeio</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.eio-get-event-stream-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_get_event_stream</strong></span>
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( <span class="methodparam">void</span>
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) : <span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span></div>
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<p class="para rdfs-comment">
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<span class="function"><strong>eio_get_event_stream()</strong></span> acquires stream representing a
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variable used in internal communications with libeio. Could be used to bind
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with some event loop provided by other PECL extension, for example
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libevent.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.eio-get-event-stream-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-get-event-stream-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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<span class="function"><strong>eio_get_event_stream()</strong></span> returns stream on success;
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otherwise, <strong><code>NULL</code></strong>
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.eio-get-event-stream-examples">
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<h3 class="title">范例</h3>
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<div class="example" id="example-4273">
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<p><strong>Example #1 Using eio with libevent</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">my_eio_poll</span><span style="color: #007700">(</span><span style="color: #0000BB">$fd</span><span style="color: #007700">, </span><span style="color: #0000BB">$events</span><span style="color: #007700">, </span><span style="color: #0000BB">$arg</span><span style="color: #007700">) {<br /> </span><span style="color: #FF8000">/* Some libevent regulation might go here .. */<br /> </span><span style="color: #007700">if (</span><span style="color: #0000BB">eio_nreqs</span><span style="color: #007700">()) {<br /> </span><span style="color: #0000BB">eio_poll</span><span style="color: #007700">();<br /> }<br /> </span><span style="color: #FF8000">/* .. and here */<br /></span><span style="color: #007700">}<br /><br />function </span><span style="color: #0000BB">my_res_cb</span><span style="color: #007700">(</span><span style="color: #0000BB">$d</span><span style="color: #007700">, </span><span style="color: #0000BB">$r</span><span style="color: #007700">) {<br /> </span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$r</span><span style="color: #007700">); </span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$d</span><span style="color: #007700">);<br />}<br /><br /></span><span style="color: #0000BB">$base </span><span style="color: #007700">= </span><span style="color: #0000BB">event_base_new</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">$event </span><span style="color: #007700">= </span><span style="color: #0000BB">event_new</span><span style="color: #007700">();<br /><br /></span><span style="color: #0000BB">$fd </span><span style="color: #007700">= </span><span style="color: #0000BB">eio_get_event_stream</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$fd</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">eio_nop</span><span style="color: #007700">(</span><span style="color: #0000BB">EIO_PRI_DEFAULT</span><span style="color: #007700">, </span><span style="color: #DD0000">"my_res_cb"</span><span style="color: #007700">, </span><span style="color: #DD0000">"nop data"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">eio_mkdir</span><span style="color: #007700">(</span><span style="color: #DD0000">"/tmp/abc-eio-temp"</span><span style="color: #007700">, </span><span style="color: #0000BB">0750</span><span style="color: #007700">, </span><span style="color: #0000BB">EIO_PRI_DEFAULT</span><span style="color: #007700">, </span><span style="color: #DD0000">"my_res_cb"</span><span style="color: #007700">, </span><span style="color: #DD0000">"mkdir data"</span><span style="color: #007700">);<br /></span><span style="color: #FF8000">/* some other eio_* calls here ... */<br /><br /><br />// set event flags<br /></span><span style="color: #0000BB">event_set</span><span style="color: #007700">(</span><span style="color: #0000BB">$event</span><span style="color: #007700">, </span><span style="color: #0000BB">$fd</span><span style="color: #007700">, </span><span style="color: #0000BB">EV_READ </span><span style="color: #FF8000">/*| EV_PERSIST*/</span><span style="color: #007700">, </span><span style="color: #DD0000">"my_eio_poll"</span><span style="color: #007700">, array(</span><span style="color: #0000BB">$event</span><span style="color: #007700">, </span><span style="color: #0000BB">$base</span><span style="color: #007700">));<br /><br /></span><span style="color: #FF8000">// set event base <br /></span><span style="color: #0000BB">event_base_set</span><span style="color: #007700">(</span><span style="color: #0000BB">$event</span><span style="color: #007700">, </span><span style="color: #0000BB">$base</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// enable event<br /></span><span style="color: #0000BB">event_add</span><span style="color: #007700">(</span><span style="color: #0000BB">$event</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// start event loop<br /></span><span style="color: #0000BB">event_base_loop</span><span style="color: #007700">(</span><span style="color: #0000BB">$base</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* The same will be available via buffered libevent interface */<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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int(3)
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int(0)
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string(8) "nop data"
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int(0)
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string(10) "mkdir data"
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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></div></div></body></html> |