ILIAS\HTTP\Duration\CallbackDuration Class Reference

Inheritance diagram for ILIAS\HTTP\Duration\CallbackDuration:

Collaboration diagram for ILIAS\HTTP\Duration\CallbackDuration:

Public Member Functions
	stretch (callable $callback)
Public Member Functions inherited from ILIAS\HTTP\Duration\Duration
	__construct (int $duration_in_ms)
	withIncrement (IncrementStrategy $increment)
	increment ()
	withDuration (int $duration_in_ms)
	getDuration ()

Additional Inherited Members
Protected Attributes inherited from ILIAS\HTTP\Duration\Duration
const	S_TO_US = 1_000_000
	number used for converting seconds (s) into microseconds (us/µ) or vise-versa. More...
const	MS_TO_US = 1_000
	number used for converting miliseconds (ms) into microseconds (us/µ) or vise-versa. More...
IncrementStrategy	$increment = null
int	$duration_in_ms

Detailed Description

Author

Thibeau Fuhrer thibe.nosp@m.au@s.nosp@m.r.sol.nosp@m.utio.nosp@m.ns

Definition at line 25 of file CallbackDuration.php.

Member Function Documentation

stretch()

ILIAS\HTTP\Duration\CallbackDuration::stretch

(

callable

$callback

)

Returns

mixed|null

Definition at line 30 of file CallbackDuration.php.

    {
        $start_time = microtime(true);
        $halted = true;

        register_shutdown_function(static function () use (&$halted) {
            if ($halted) {
                throw new \LogicException("Callback could not be stretched because it halted the programm.");
            }
        });

        $return = $callback();
        $halted = false;

        $elapsed_time_in_us = ((microtime(true) - $start_time) * self::S_TO_US);
        $duration_in_us = ($this->duration_in_ms * self::MS_TO_US);

        if ($elapsed_time_in_us > $duration_in_us) {
            throw new \RuntimeException("Execution of callback exceeded the given duration and could not be stretched.");
        }

        if ($elapsed_time_in_us < $duration_in_us) {
            usleep((int) round($duration_in_us - $elapsed_time_in_us));
        }

        return $return;
    }

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The documentation for this class was generated from the following file:

• src/HTTP/Duration/CallbackDuration.php