53 lines
1.9 KiB
Java
53 lines
1.9 KiB
Java
package nachos.threads;
|
|
|
|
import nachos.machine.*;
|
|
|
|
/**
|
|
* A single rider. Each rider accesses the elevator bank through an
|
|
* instance of <tt>RiderControls</tt>.
|
|
*/
|
|
public class Rider implements RiderInterface {
|
|
/**
|
|
* Allocate a new rider.
|
|
*/
|
|
public Rider() {
|
|
}
|
|
|
|
/**
|
|
* Initialize this rider. The rider will access the elevator bank through
|
|
* <i>controls</i>, and the rider will make stops at different floors as
|
|
* specified in <i>stops</i>. This method should return immediately after
|
|
* this rider is initialized, but not until the interrupt handler is
|
|
* set. The rider will start receiving events after this method returns,
|
|
* potentially before <tt>run()</tt> is called.
|
|
*
|
|
* @param controls the rider's interface to the elevator bank. The
|
|
* rider must not attempt to access the elevator
|
|
* bank in <i>any</i> other way.
|
|
* @param stops an array of stops the rider should make; see
|
|
* below.
|
|
*/
|
|
public void initialize(RiderControls controls, int[] stops) {
|
|
}
|
|
|
|
/**
|
|
* Cause the rider to use the provided controls to make the stops specified
|
|
* in the constructor. The rider should stop at each of the floors in
|
|
* <i>stops</i>, an array of floor numbers. The rider should <i>only</i>
|
|
* make the specified stops.
|
|
*
|
|
* <p>
|
|
* For example, suppose the rider uses <i>controls</i> to determine that
|
|
* it is initially on floor 1, and suppose the stops array contains two
|
|
* elements: { 0, 2 }. Then the rider should get on an elevator, get off
|
|
* on floor 0, get on an elevator, and get off on floor 2, pushing buttons
|
|
* as necessary.
|
|
*
|
|
* <p>
|
|
* This method should not return, but instead should call
|
|
* <tt>controls.finish()</tt> when the rider is finished.
|
|
*/
|
|
public void run() {
|
|
}
|
|
}
|