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199 lines
6.2 KiB
HTML
199 lines
6.2 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>Return info about system resource limits</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.posix-getrlimit" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">posix_getrlimit</h1>
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<p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">posix_getrlimit</span> — <span class="dc-title">Return info about system resource limits</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.posix-getrlimit-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>posix_getrlimit</strong></span>
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( <span class="methodparam">void</span>
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) : <span class="type">array</span></div>
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<p class="para rdfs-comment">
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<span class="function"><strong>posix_getrlimit()</strong></span> returns an <span class="type"><a href="language.types.array.html" class="type array">array</a></span>
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of information about the current resource's soft and hard limits.
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</p>
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<p class="para">
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Each resource has an associated soft and hard limit. The soft
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limit is the value that the kernel enforces for the corresponding
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resource. The hard limit acts as a ceiling for the soft limit.
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An unprivileged process may only set its soft limit to a value
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from 0 to the hard limit, and irreversibly lower its hard limit.
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</p>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.posix-getrlimit-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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Returns an associative <span class="type"><a href="language.types.array.html" class="type array">array</a></span> of elements for each
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limit that is defined. Each limit has a soft and a hard limit.
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<table class="doctable table">
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<caption><strong>List of possible limits returned</strong></caption>
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<thead>
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<tr>
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<th>Limit name</th>
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<th>Limit description</th>
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</tr>
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</thead>
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<tbody class="tbody">
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<tr>
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<td>core</td>
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<td>
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The maximum size of the core file. When 0, not core files are
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created. When core files are larger than this size, they will
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be truncated at this size.
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</td>
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</tr>
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<tr>
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<td>totalmem</td>
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<td>
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The maximum size of the memory of the process, in bytes.
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</td>
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</tr>
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<tr>
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<td>virtualmem</td>
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<td>
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The maximum size of the virtual memory for the process, in bytes.
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</td>
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</tr>
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<tr>
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<td>data</td>
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<td>
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The maximum size of the data segment for the process, in bytes.
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</td>
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</tr>
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<tr>
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<td>stack</td>
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<td>
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The maximum size of the process stack, in bytes.
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</td>
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</tr>
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<tr>
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<td>rss</td>
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<td>
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The maximum number of virtual pages resident in RAM
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</td>
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</tr>
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<tr>
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<td>maxproc</td>
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<td>
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The maximum number of processes that can be created for the
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real user ID of the calling process.
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</td>
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</tr>
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<tr>
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<td>memlock</td>
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<td>
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The maximum number of bytes of memory that may be locked into RAM.
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</td>
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</tr>
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<tr>
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<td>cpu</td>
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<td>
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The amount of time the process is allowed to use the CPU.
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</td>
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</tr>
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<tr>
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<td>filesize</td>
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<td>
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The maximum size of the data segment for the process, in bytes.
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</td>
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</tr>
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<tr>
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<td>openfiles</td>
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<td>
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One more than the maximum number of open file descriptors.
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</td>
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</tr>
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</tbody>
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</table>
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.posix-getrlimit-examples">
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<h3 class="title">范例</h3>
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<p class="para">
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<div class="example" id="example-4347">
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<p><strong>Example #1 Example use of <span class="function"><strong>posix_getrlimit()</strong></span></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 /><br />$limits </span><span style="color: #007700">= </span><span style="color: #0000BB">posix_getrlimit</span><span style="color: #007700">();<br /><br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">$limits</span><span style="color: #007700">);<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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Array
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(
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[soft core] => 0
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[hard core] => unlimited
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[soft data] => unlimited
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[hard data] => unlimited
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[soft stack] => 8388608
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[hard stack] => unlimited
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[soft totalmem] => unlimited
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[hard totalmem] => unlimited
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[soft rss] => unlimited
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[hard rss] => unlimited
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[soft maxproc] => unlimited
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[hard maxproc] => unlimited
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[soft memlock] => unlimited
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[hard memlock] => unlimited
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[soft cpu] => unlimited
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[hard cpu] => unlimited
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[soft filesize] => unlimited
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[hard filesize] => unlimited
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[soft openfiles] => 1024
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[hard openfiles] => 1024
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)
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</pre></div>
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</div>
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</div>
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</p>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.posix-getrlimit-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">man page GETRLIMIT(2)</li>
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<li class="member"><span class="function"><a href="posix_setrlimit.html" class="function" rel="rdfs-seeAlso">posix_setrlimit()</a> - Set system resource limits</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> |