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base reforge + Q1 TODO better passenger repartition on bus lines

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violette 2024-03-21 12:40:08 -04:00
parent f59aeac67b
commit 78c88d9279
4 changed files with 152 additions and 72 deletions
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58
src/main/java/usherbrooke/ift630/App.java
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@ -9,16 +9,16 @@ import java.util.concurrent.ExecutorService;
* Hello world!
*
*/
public class App
{
public class App {
static private int numStops = 10;
static private int numBusses = 10;
static private int numStopPerBus = 2;
static private int numPassengersPerBus = 2;
static private int numPassengers = 20;
static private int numPassengersPerStop = 2;
static private int numThreads = 5;
static private int timeBetweenStops = 5;
static private int numPassengersPerStop = 5;
static private int numPassengers = numPassengersPerStop * numStops;
static private int numThreads = 1;
static private int timeBetweenStops = 0;
static private int timeEmbark = 0;
public static void main(String[] args) {
ExecutorService threads = Executors.newFixedThreadPool(numThreads);
@ -30,9 +30,25 @@ public class App
Stop s = new Stop(k, numPassengersPerStop);
stops.add(s);
threads.submit(s);
//threads.submit(s);
}
for (int k = 0; k < numBusses; k++) {
ArrayList<Stop> s_list = new ArrayList<Stop>();
Stop s;
while (s_list.size() < numStopPerBus) {
do {
s = stops.get((int) (Math.random() * numStops));
} while (s_list.contains(s));
s_list.add(s);
}
Bus b = new Bus(s_list, k, timeBetweenStops, timeEmbark, numPassengersPerBus);
busses.add(b);
}
// TODO put pasengers at stops they can catch their bus
// ie, start and stop in bus path + stop after start
for (int k = 0; k < numPassengers; k++) {
Stop start, dest;
@ -48,34 +64,22 @@ public class App
start.addPassenger(p);
}
for (int k = 0; k < numBusses; k++) {
ArrayList<Stop> s_list = new ArrayList<Stop>();
Stop s;
while (s_list.size() < numStopPerBus) {
do {
s = stops.get((int) (Math.random() * numStops));
} while (s_list.contains(s));
s_list.add(s);
}
Bus b = new Bus(s_list, k, timeBetweenStops, numPassengersPerBus);
for (Bus b : busses) {
b.printDetails();
busses.add(b);
synchronized (b) {
b.notify();
}
}
// start bus thread
// (here so init logs are clean)
for (Bus b : busses) {
threads.submit(b);
//threads.submit(b);
b.run();
}
threads.shutdown();
try {
threads.awaitTermination(Long.MAX_VALUE, TimeUnit.DAYS);
} catch (InterruptedException e) {
}
} catch (InterruptedException e) {}
}
}

114
src/main/java/usherbrooke/ift630/Bus.java
View file

@ -10,82 +10,121 @@ public class Bus extends Thread {
private int maxCapacity;
private int currentCapacity;
private int timeBetweenStops;
private Stop currentStop;
private int timeEmbark;
private Stop nextStop;
private int timeEmbark() {
return (int) (Math.random() * timeEmbark);
}
private int timeBetweenStops() {
return (int) (Math.random() * timeBetweenStops * timeBetweenStops);
return (int) (Math.random() * timeBetweenStops);
}
private boolean askStop() {
boolean res = false;
for (Passenger p : passengers){
if (p.getDest() == nextStop) {
res = true;
Logger.getInstance().print(id, "Stop asked");
break;
}
}
return res;
}
private Stop goToNextStop() {
currentStop = stops.remove(0);
// if no reason to stop, skip current stop
do {
try {
nextStop = stops.remove(0);
} catch (IndexOutOfBoundsException e) {
nextStop = null;
}
} while ((getNextStopPassengers().isEmpty() || currentCapacity >= maxCapacity) && askStop());
try {
Thread.sleep(timeBetweenStops() * 1000);
} catch (InterruptedException e) {
System.out.println(e.getMessage());
}
return currentStop;
return nextStop;
}
// TODO ??
// TODO what
private ArrayList<Passenger> getNextStopPassengers() {
ArrayList<Passenger> res = new ArrayList<Passenger>();
for (Passenger p : passengers) {
Stop next = stops.get(1);
next.getPassengerByDest(stops);
}
if (nextStop != null)
for (Passenger p : passengers) {
if (p.getDest() == nextStop) {
res.add(p);
}
}
return res;
}
@Override
public void run() {
while (currentStop != null) {
embarkPassengers();
try {
while (nextStop != null) {
disembarkPassengers();
embarkPassengers();
currentStop = goToNextStop();
nextStop = goToNextStop();
}
} catch (Exception e) {
Logger.getInstance().print(id, "[BUS] exception: " + e.getMessage());
}
Logger.getInstance().print(id, "[BUS] exiting!");
}
Bus(ArrayList<Stop> s, int id, int time, int maxCapacity) {
this.timeBetweenStops = time;
Bus(ArrayList<Stop> s, int id, int timeStop, int timeEmbark, int maxCapacity) {
this.timeBetweenStops = timeStop;
this.timeEmbark = timeEmbark;
this.name = "Bus n°" + id;
this.id = id;
this.passengers = new ArrayList<Passenger>();
this.stops = s;
this.currentStop = stops.get(0);
this.nextStop = stops.remove(0);
this.currentCapacity = 0;
this.maxCapacity = maxCapacity;
}
public synchronized void disembarkPassengers() {
for (Passenger p : passengers) {
Logger.getInstance().print(id, "[BUS] " + p.getName() + " got out of " + name);
synchronized (nextStop.getMutex()) {
for (Passenger p : passengers) {
Logger.getInstance().print(id, "\t[BUS] " + p.getName() + " disembarked " + name);
if (p.getDest() == currentStop) {
p.disembark();
currentCapacity--;
if (p.getDest() == nextStop) {
p.disembark();
currentCapacity--;
}
}
}
}
public synchronized void embarkPassengers() {
try {
ArrayList<Passenger> list = currentStop.getPassengerByDest(stops);
Logger.getInstance().print(id, "[BUS] hop into " + name + "!");
if (currentCapacity >= maxCapacity)
throw new OverCapacityException("Over bus capacity.");
for (Passenger p : list) {
passengers.add(p);
currentStop.removePassenger(p);
currentCapacity++;
synchronized (nextStop.getMutex()) {
try {
ArrayList<Passenger> list = nextStop.getPassengerByDest(stops);
Logger.getInstance().print(id, "[BUS] hop into " + name + " at stop " + nextStop.getName() + "!");
Thread.sleep(timeEmbark() * 1000);
if (currentCapacity >= maxCapacity)
throw new OverCapacityException("Over bus capacity.");
for (Passenger p : list) {
passengers.add(p);
nextStop.removePassenger(p);
currentCapacity++;
Logger.getInstance().print(id,
"[BUS] " + p.getName() + " embarked in " + name + " at " + currentStop.getName());
Logger.getInstance().print(id,
"\t[BUS] " + p.getName() + " embarked in " + name + " at " + nextStop.getName());
}
} catch (IndexOutOfBoundsException | OverCapacityException | InterruptedException e) {
Logger.getInstance().print(id, "Exception: " + e.getMessage());
}
} catch (IndexOutOfBoundsException | OverCapacityException e) {
Logger.getInstance().print(id, "ERROR " + e.getMessage());
}
}
@ -94,10 +133,10 @@ public class Bus extends Thread {
Logger.getInstance().print(id, "\t".repeat(indent) + name);
Logger.getInstance().print(id, "\t".repeat(indent) + "time between stops: " + timeBetweenStops);
Logger.getInstance().print(id, "\t".repeat(indent) + "max capacity: " + maxCapacity);
Logger.getInstance().print(id, "\t".repeat(indent) + "current stop: " + currentStop.getName());
Logger.getInstance().print(id, "\t".repeat(indent) + "stops: " );
Logger.getInstance().print(id, "\t".repeat(indent) + "current stop: " + nextStop.getName());
Logger.getInstance().print(id, "\t".repeat(indent) + "stops: ");
nextStop.printDetails(indent + 1);
for (Stop s : stops) {
s.printDetails(indent + 1);
}
@ -106,5 +145,4 @@ public class Bus extends Thread {
public void printDetails() {
printDetails(0);
}
}

18
src/main/java/usherbrooke/ift630/Passenger.java
View file

@ -2,10 +2,11 @@ package usherbrooke.ift630;
public class Passenger {
private String name;
private int id;
private Stop dest;
private Stop start;
private String name;
private int id;
private int color = -1;
private Stop dest;
private Stop start;
Passenger(int id, Stop dest, Stop start) {
this.id = id;
@ -30,9 +31,14 @@ public class Passenger {
return name;
}
public void setName(int color) {
this.color = color;
}
public void printDetails(int indent) {
Logger.getInstance().print(id, "\t".repeat(indent) + "---".repeat(3) + " Passenger details " + "---".repeat(3));
Logger.getInstance().print(id, "\t".repeat(indent) + name + " start: " + start.getName() + " dest: " + dest.getName());
if (color == -1) color = id;
Logger.getInstance().print(color, "\t".repeat(indent) + "---".repeat(3) + " Passenger details " + "---".repeat(3));
Logger.getInstance().print(color, "\t".repeat(indent) + name + " start: " + start.getName() + " dest: " + dest.getName());
}
public void printDetails() {

34
src/main/java/usherbrooke/ift630/Stop.java
View file

@ -1,13 +1,17 @@
package usherbrooke.ift630;
import java.util.ArrayList;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
public class Stop implements Runnable {
private String name;
private int id;
private int maxCapacity;
private ArrayList<Passenger> passengers;
private Lock mutex = new ReentrantLock();
// TODO lock mutex when stop is used
@Override
public void run() {
// xd do nothing for now
@ -63,6 +67,18 @@ public class Stop implements Runnable {
return maxCapacity;
}
public Lock getMutex() {
return mutex;
}
public void printDetails(int indent, int color) {
Logger.getInstance().print(color, "\t".repeat(indent) + "---".repeat(3) + " Stop details " + "---".repeat(3));
Logger.getInstance().print(color, "\t".repeat(indent) + name);
for (Passenger p : passengers) {
p.printDetails(indent + 1);
}
}
public void printDetails(int indent) {
Logger.getInstance().print(id, "\t".repeat(indent) + "---".repeat(3) + " Stop details " + "---".repeat(3));
@ -77,8 +93,24 @@ public class Stop implements Runnable {
printDetails(0);
}
public void busArrive() {
synchronized(this) {
mutex.lock();
}
}
public void busLeave() {
synchronized(this) {
mutex.unlock();
}
}
public void removePassenger(Passenger p) {
// Logger.getInstance().print(id, "Passenger " + p.getName() + " left " + name);
passengers.remove(p);
try {
passengers.remove(p);
} catch(Exception e) {
System.out.println("exception" + e.getMessage());
}
}
}