@Test
public void testMutableHashMapPerformance() {
try {
final int NUM_MEM_PAGES = SIZE * NUM_PAIRS / PAGE_SIZE;
MutableObjectIterator<IntPair> buildInput = new UniformIntPairGenerator(NUM_PAIRS, 1, false);
MutableObjectIterator<IntPair> probeInput = new UniformIntPairGenerator(0, 1, false);
MutableObjectIterator<IntPair> probeTester = new UniformIntPairGenerator(NUM_PAIRS, 1, false);
MutableObjectIterator<IntPair> updater = new UniformIntPairGenerator(NUM_PAIRS, 1, false);
MutableObjectIterator<IntPair> updateTester = new UniformIntPairGenerator(NUM_PAIRS, 1, false);
long start = 0L;
long end = 0L;
long first = System.currentTimeMillis();
System.out.println("Creating and filling MutableHashMap...");
start = System.currentTimeMillis();
MutableHashTable<IntPair, IntPair> table = new MutableHashTable<IntPair, IntPair>(serializer, serializer, comparator, comparator, pairComparator, getMemory(NUM_MEM_PAGES, PAGE_SIZE), ioManager);
table.open(buildInput, probeInput);
end = System.currentTimeMillis();
System.out.println("HashMap ready. Time: " + (end-start) + " ms");
System.out.println("Starting first probing run...");
start = System.currentTimeMillis();
IntPair compare = new IntPair();
HashBucketIterator<IntPair, IntPair> iter;
IntPair target = new IntPair();
while(probeTester.next(compare) != null) {
iter = table.getMatchesFor(compare);
iter.next(target);
assertEquals(target.getKey(), compare.getKey());
assertEquals(target.getValue(), compare.getValue());
assertTrue(iter.next(target) == null);
}
end = System.currentTimeMillis();
System.out.println("Probing done. Time: " + (end-start) + " ms");
System.out.println("Starting update...");
start = System.currentTimeMillis();
while(updater.next(compare) != null) {
compare.setValue(compare.getValue()*-1);
iter = table.getMatchesFor(compare);
iter.next(target);
iter.writeBack(compare);
//assertFalse(iter.next(target));
}
end = System.currentTimeMillis();
System.out.println("Update done. Time: " + (end-start) + " ms");
System.out.println("Starting second probing run...");
start = System.currentTimeMillis();
while(updateTester.next(compare) != null) {
compare.setValue(compare.getValue()*-1);
iter = table.getMatchesFor(compare);
iter.next(target);
assertEquals(target.getKey(), compare.getKey());
assertEquals(target.getValue(), compare.getValue());