Re: Safe execution timeout handling

Hi! > Instead of throwing zend_error() from signal handler, now we just set > EG(vm_interrupt) and EG(timed_out) flags. PHP VM checks EG(vm_interrupt) > flag on each JMPx instruction (potential loop iteration) and then throws JMPs are not the only operations that can transfer control and thus potentially form a loop. > Unfortunately this approach doesn't support interruption of long-running > internal functions yet. It should be extended in some way. May be > additional timeout. Doing additional setjmp when entering internal function probably would be too expensive. So the question is how to get out of the bad function without incurring per-function overhead... Not sure how to do it. -- Stas Malyshev smalyshev@gmail.com