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package org.eclipse.viatra.solver.data.map.tests.fuzz;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Random;
import org.eclipse.viatra.solver.data.map.VersionedMapStore;
import org.eclipse.viatra.solver.data.map.internal.VersionedMapImpl;
import org.eclipse.viatra.solver.data.map.tests.utils.MapTestEnvironment;
public class MultiThreadTestRunnable implements Runnable {
String scenario;
VersionedMapStore<Integer, String> store;
int steps;
int maxKey;
String[] values;
int seed;
int commitFrequency;
List<Throwable> errors = new LinkedList<>();
public MultiThreadTestRunnable(String scenario, VersionedMapStore<Integer, String> store, int steps,
int maxKey, String[] values, int seed, int commitFrequency) {
super();
this.scenario = scenario;
this.store = store;
this.steps = steps;
this.maxKey = maxKey;
this.values = values;
this.seed = seed;
this.commitFrequency = commitFrequency;
}
private void logAndThrowError(String message) {
AssertionError error = new AssertionError(message);
errors.add(error);
}
public List<Throwable> getErrors() {
return errors;
}
@Override
public void run() {
// 1. build a map with versions
Random r = new Random(seed);
VersionedMapImpl<Integer, String> versioned = (VersionedMapImpl<Integer, String>) store.createMap();
Map<Integer, Long> index2Version = new HashMap<>();
for (int i = 0; i < steps; i++) {
int index = i + 1;
int nextKey = r.nextInt(maxKey);
String nextValue = values[r.nextInt(values.length)];
try {
versioned.put(nextKey, nextValue);
} catch (Exception exception) {
exception.printStackTrace();
logAndThrowError(scenario + ":" + index + ": exception happened: " + exception);
}
if (index % commitFrequency == 0) {
long version = versioned.commit();
index2Version.put(i, version);
}
MapTestEnvironment.printStatus(scenario, index, steps, "building");
}
// 2. create a non-versioned
VersionedMapImpl<Integer, String> reference = (VersionedMapImpl<Integer, String>) store.createMap();
r = new Random(seed);
Random r2 = new Random(seed+1);
for (int i = 0; i < steps; i++) {
int index = i + 1;
int nextKey = r.nextInt(maxKey);
String nextValue = values[r.nextInt(values.length)];
try {
reference.put(nextKey, nextValue);
} catch (Exception exception) {
exception.printStackTrace();
logAndThrowError(scenario + ":" + index + ": exception happened: " + exception);
}
// go back to an existing state and compare to the reference
if (index % (commitFrequency) == 0) {
versioned.restore(index2Version.get(i));
MapTestEnvironment.compareTwoMaps(scenario + ":" + index, reference, versioned,errors);
// go back to a random state (probably created by another thread)
List<Long> states = new ArrayList<>(store.getStates());
Collections.shuffle(states, r2);
for(Long state : states.subList(0, Math.min(states.size(), 100))) {
versioned.restore(state);
}
versioned.restore(index2Version.get(i));
}
MapTestEnvironment.printStatus(scenario, index, steps, "comparison");
}
}
}
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