namespace ilimit {
    /**
     * Call a callback while imposing limits on the time and memory that
     * the call may consume.
     *
     * @param callable $callable      The invocation to make.
     * @param array    $arguments     The list of arguments.
     * @param int      $timeout       The maximum execution time, in microseconds.
     * @param int      $maxMemory     The maximum amount of memory, in bytes.
     *                                If set to zero, no limit is imposed.
     * @param int      $checkInterval The interval between memory checks,
     *                                in microseconds. If set to zero or less,
     *                                a default interval of 100 microseconds is used.
     *
     * @return mixed Returns the return value of the callback.
     *
     * @throws Error\Runtime If timeout is not positive.
     * @throws Error\Runtime If maxMemory is negative.
     * @throws Error\System  If the system lacks necessary resources to make the call.
     * @throws Error\Timeout If the invocation exceeds the allowed time.
     * @throws Error\Memory  If the invocation exceeds the allowed memory.
     */
    function call(callable $callable, array $arguments, int $timeout, int $maxMemory = 0, int $checkInterval = 0);
}