24      * @param float $timeout timeout in seconds
27     function setTimeout(callable $cb, $timeout) {  argument
29         $triggerTime = microtime(true) + ($timeout);
68      * @param float $timeout
71     function setInterval(callable $cb, $timeout) {  argument
76         $f = function() use ($cb, &$f, $timeout, &$keepGoing) {
79                 $this->setTimeout($f, $timeout);
82         $this->setTimeout($f, $timeout);
306      * @param float $timeout
308     protected function runStreams($timeout) {  argument
315             if (stream_select($read, $write, $except, null, $timeout)) {
331             usleep($timeout !== null ? $timeout * 1000000 : 200000);