(PECL luasandbox >= 1.0.0)
LuaSandbox::getCPUUsage — Fetch the current CPU time usage of the Lua environment
Fetches the current CPU time usage of the Lua environment.
This includes time spent in PHP callbacks.
Returns the current CPU time usage in seconds.
On Windows, this function always returns zero. On operating systems that do not support
CLOCK_THREAD_CPUTIME_ID, such as FreeBSD and Mac OS X, this function will return the elapsed wall-clock time, not CPU time.