LuaSandbox::setCPULimit
(PECL luasandbox >= 1.0.0)
LuaSandbox::setCPULimit — Set the CPU time limit for the Lua environment
说明
$limit): voidSets the CPU time limit for the Lua environment.
If the total user and system time used by the environment after the call to this method exceeds this limit, a LuaSandboxTimeoutError exception is thrown.
Time used in PHP callbacks is included in the limit.
Setting the time limit from a callback while Lua is running causes the timer to be reset, or started if it was not already running.
注意:
On Windows, the CPU limit will be ignored. On operating systems that do not support
CLOCK_THREAD_CPUTIME_ID, such as FreeBSD and Mac OS X, wall-clock time rather than CPU time will be limited.
参数
-
limit -
Limit as a float in seconds, or
falsefor no limit.
返回值
没有返回值。
范例
示例 #1 Calling a Lua function
<?php
// create a new LuaSandbox
$sandbox = new LuaSandbox();
// set a time limit
$sandbox->setCPULimit( 2 );
// Run Lua code
$sandbox->loadString( 'while true do end' )->call();
?>
以上例程的输出类似于：
PHP Fatal error: Uncaught LuaSandboxTimeoutError: The maximum execution time for this script was exceeded
参见
- LuaSandbox::getCPUUsage() - Fetch the current CPU time usage of the Lua environment
- LuaSandbox::setMemoryLimit() - Set the memory limit for the Lua environment
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User Contributed Notes
备份地址：http://www.lvesu.com/blog/php/luasandbox.setcpulimit.php