(PECL luasandbox >= 1.0.0)
LuaSandbox::setCPULimit — Set the CPU time limit for the Lua environment
$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.
limit
Limit as a float in seconds, or false for no limit.
値を返しません。
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();
?>
上の例の出力は、 たとえば以下のようになります。
PHP Fatal error: Uncaught LuaSandboxTimeoutError: The maximum execution time for this script was exceeded