}
}
public void testMultipleWriterReader() {
Counter bytesUsed = Counter.newCounter();
IntBlockPool pool = new IntBlockPool(new ByteTrackingAllocator(bytesUsed));
for (int j = 0; j < 2; j++) {
List<StartEndAndValues> holders = new ArrayList<TestIntBlockPool.StartEndAndValues>();
int num = atLeast(4);
for (int i = 0; i < num; i++) {
holders.add(new StartEndAndValues(random().nextInt(1000)));
}
IntBlockPool.SliceWriter writer = new IntBlockPool.SliceWriter(pool);
IntBlockPool.SliceReader reader = new IntBlockPool.SliceReader(pool);
int numValuesToWrite = atLeast(10000);
for (int i = 0; i < numValuesToWrite; i++) {
StartEndAndValues values = holders
.get(random().nextInt(holders.size()));
if (values.valueCount == 0) {
values.start = writer.startNewSlice();
} else {
writer.reset(values.end);
}
writer.writeInt(values.nextValue());
values.end = writer.getCurrentOffset();
if (random().nextInt(5) == 0) {
// pick one and reader the ints
assertReader(reader, holders.get(random().nextInt(holders.size())));
}
}
while (!holders.isEmpty()) {
StartEndAndValues values = holders.remove(random().nextInt(
holders.size()));
assertReader(reader, values);
}
if (random().nextBoolean()) {
pool.reset(true, false);
assertEquals(0, bytesUsed.get());
} else {
pool.reset(true, true);
assertEquals(IntBlockPool.INT_BLOCK_SIZE
* RamUsageEstimator.NUM_BYTES_INT, bytesUsed.get());
}
}
}