LuaSandbox::pauseUsageTimer

(PECL luasandbox >= 1.4.0)

LuaSandbox::pauseUsageTimer — Pause the CPU usage timer

说明

public LuaSandbox::pauseUsageTimer(): bool

Pauses the CPU usage timer.

This only has effect when called from within a callback from Lua. When execution returns to Lua, the timer will be automatically unpaused. If a new call into Lua is made, the timer will be unpaused for the duration of that call.

If a PHP callback calls into Lua again with timer not paused, and then that Lua function calls into PHP again, the second PHP call will not be able to pause the timer. The logic is that even though the second PHP call would avoid counting the CPU usage against the limit, the first call still counts it.

参数

此函数没有参数。

返回值

Returns a bool indicating whether the timer is now paused.

范例

示例 #1 Manipulating the usage timer


<?php

// create a new LuaSandbox and set a CPU limit
$sandbox = new LuaSandbox();
$sandbox->setCPULimit( 1 );

function doWait( $t ) {
    $end = microtime( true ) + $t;
    while ( microtime( true ) < $end ) {
        // waste CPU cycles
    }
}

// Register a PHP callback
$sandbox->registerLibrary( 'php', [
    'test' => function () use ( $sandbox ) {
        $sandbox->pauseUsageTimer();
        doWait( 5 );

        $sandbox->unpauseUsageTimer();
        doWait( 0.1 );
    },
    'test2' => function () use ( $sandbox ) {
        $sandbox->pauseUsageTimer();
        $sandbox->unpauseUsageTimer();
        doWait( 1.1 );
    }
] );

echo "This should not time out...\n";
$sandbox->loadString( 'php.test()' )->call();

echo "This should time out.\n";
try {
    $sandbox->loadString( 'php.test2()' )->call();
    echo "It did not?\n";
} catch ( LuaSandboxTimeoutError $ex ) {
    echo "It did! " . $ex->getMessage() . "\n";
}

?>

以上例程会输出：

This should not time out...
This should time out.
It did! The maximum execution time for this script was exceeded

参见

LuaSandbox::setCPULimit() - Set the CPU time limit for the Lua environment
LuaSandbox::unpauseUsageTimer() - Unpause the timer paused by LuaSandbox::pauseUsageTimer

add a note

User Contributed Notes

There are no user contributed notes for this page.

官方地址：https://www.php.net/manual/en/luasandbox.pauseusagetimer.php

有任何技术问题请点击这里网站运营推广招聘

IT PHP 编程语言 Linux 开发编程科技 Elasticsearch HTML/CSS/XML 网络数据库 JAVA 面试 NoSQL C/C++ Golang Git 算法操作系统正则表达式 Redis 互联网 MySql JavaScript 运维软件国际架构设计 Mac OS TCP/IP Excel Vim Windows Socket Oracle VR MongoDB Python 运营 MemCache 商业硬件电子娱乐设计 nginx 摄影游戏 WordPress HTTP 团建数码电器

php7 安装fileinfo扩展 preg_split — 通过一个正则表达式分隔字符串 php位值,解决 PHP 中 usort 在值相同时改变原始位置的问题 [PHP] inet_pton/inet_ntop IP地址转换函数 PHP 8.1 [鸟哥]PHP_INT_MIN 和 -9223372036854775808 adodb手册 ADORecordSet对象 opcache预加载 Composer的Packagist资源 array_multisort() 多字段排序 PHPMailer设置utf8 PHPMailer字符集CharSet mysql面试题 PHP json解析（json_decode）页面工具 [原创]诡异的php-fpm超时问题 php中几种注释规范纯php实现DES以及TripleDES加密算法 php 修改图片大小支持php7的性能采集扩展 PHP mkdir()写出来的权限与mode值不符合

略微加速

PHP官方手册 - 互联网笔记

LuaSandbox::pauseUsageTimer

说明

参数

返回值

范例

参见

User Contributed Notes