Re: Running a code block with timeout

Hey guys, How I can un-subscribe from php-general@lists.php.net Thx, Matt On Wed, Oct 30, 2019 at 9:02 AM helices <mike@mdsresource.net> wrote: > On Wed, Oct 30, 2019 at 7:02 AM Marcos Passos <marcospassos.com@gmail.com> > wrote: > >> Hi everyone, >> >> We're looking for a way to run a code block with a timeout. >> >> Our use case involves evaluating an expression written in a custom DSL >> (similar to Symfony Expression Language), and we want to ensure that the >> execution will not exceed a given time limit. >> >> We tried a naive approach using set_time_limit, but there is no way to >> catch the exception from the block code that timed out. We then considered >> using PCNTL, but its use is discouraged production environments. >> >> Do you guys have any suggestions? >> >> - Marcos >> > > > We use the following successfully: > > // > // GLOBALS > $CHILD_PID = 0; > $PID = getmypid(); > $TIMEOUT = $timeout_seconds; > > // > // BEGIN timer here > // > > // If set to (0), no time limit is imposed > set_time_limit(0); > > // Set timer here > set_timeout(); > > // > // Do actual upload HERE: > // > > // > // END timer here > // > clear_timeout($CHILD_PID); > > // > // FUNCTIONS > // > > // > // Stop timer > function clear_timeout($CHILD_PID) { > posix_kill($CHILD_PID, SIGTERM); > } > > // > // Set timeout timer > function set_timeout() { > global $CHILD_PID, $PID, $TIMEOUT; > > $CHILD_PID = pcntl_fork(); > > if($CHILD_PID == 0) { > sleep($TIMEOUT); > posix_kill($PID, SIGTERM); > > exitHandler( > ... > ); > } > } > > > > ~ Mike > -- Best, DC Web Makers <https://blockchain.dcwebmakers.com/> Coding Bootcamps <https://coding-bootcamps.com/> 240-200-6131 301-327-8773