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<?php
namespace Illuminate\Support;
class Timebox
{
/**
* Indicates if the timebox is allowed to return early.
*
* @var bool
*/
public $earlyReturn = false;
/**
* Invoke the given callback within the specified timebox minimum.
*
* @template TCallReturnType
*
* @param (callable($this): TCallReturnType) $callback
* @param int $microseconds
* @return TCallReturnType
*/
public function call(callable $callback, int $microseconds)
{
$start = microtime(true);
$result = $callback($this);
$remainder = intval($microseconds - ((microtime(true) - $start) * 1000000));
if (! $this->earlyReturn && $remainder > 0) {
$this->usleep($remainder);
}
return $result;
}
/**
* Indicate that the timebox can return early.
*
* @return $this
*/
public function returnEarly()
{
$this->earlyReturn = true;
return $this;
}
/**
* Indicate that the timebox cannot return early.
*
* @return $this
*/
public function dontReturnEarly()
{
$this->earlyReturn = false;
return $this;
}
/**
* Sleep for the specified number of microseconds.
*
* @param int $microseconds
* @return void
*/
protected function usleep(int $microseconds)
{
usleep($microseconds);
}
}