/** Handles size after put. */
private void onPut() {
cnt.incrementAndGet();
int c;
while ((c = cnt.get()) > max) {
// Decrement count.
if (cnt.compareAndSet(c, c - 1)) {
try {
K key = firstEntry().getKey();
V val;
// Make sure that an element is removed.
while ((val = super.remove(firstEntry().getKey())) == null) {
// No-op.
}
assert val != null;
GridInClosure2<K, V> lsnr = this.lsnr;
// Listener notification.
if (lsnr != null) lsnr.apply(key, val);
} catch (NoSuchElementException e1) {
e1.printStackTrace(); // Should never happen.
assert false : "Internal error in grid bounded ordered set.";
}
}
}
}
public void newCharacter(CharacterEvent ce) {
int oldChar2type;
// Previous character not typed correctly - 1 point penalty
if (ce.source == generator.get()) {
oldChar2type = char2type.getAndSet(ce.character); // 接收随机字母
if (oldChar2type != -1) {
score.decrementAndGet();
setScore();
}
}
// If character is extraneous - 1 point penalty
// If character does not match - 1 point penalty
else if (ce.source == typist.get()) {
// 在此有个假设：即正在使用的该变量值不会被变更且程序代码完成时也是如此
// 所有已经被我们设定的具有特定值的变量就应当是那个值。
while (true) {
oldChar2type = char2type.get(); // 获取上次已接收到的随机字母
if (oldChar2type != ce.character) { // ce.character是用户输入的字母，现在作比较
score.decrementAndGet();
break;
} else if (char2type.compareAndSet(oldChar2type, -1)) {
score.incrementAndGet();
break;
}
}
setScore();
}
}
/** {@inheritDoc} */
@Override
protected Collection<E> dequeue0(int cnt) {
WindowHolder tup = ref.get();
AtomicInteger size = tup.size();
Collection<T> evts = tup.collection();
Collection<E> resCol = new ArrayList<>(cnt);
while (true) {
int curSize = size.get();
if (curSize > 0) {
if (size.compareAndSet(curSize, curSize - 1)) {
E res = pollInternal(evts, tup.set());
if (res != null) {
resCol.add(res);
if (resCol.size() >= cnt) return resCol;
} else {
size.incrementAndGet();
return resCol;
}
}
} else return resCol;
}
}
/**
* Poll evicted internal implementation.
*
* @return Evicted element.
*/
@Nullable
private E pollEvictedInternal() {
WindowHolder tup = ref.get();
AtomicInteger size = tup.size();
while (true) {
int curSize = size.get();
if (curSize > maxSize) {
if (size.compareAndSet(curSize, curSize - 1)) {
E evt = pollInternal(tup.collection(), tup.set());
if (evt != null) return evt;
else {
// No actual events in queue, it means that other thread is just adding event.
// return null as it is a concurrent add call.
size.incrementAndGet();
return null;
}
}
} else return null;
}
}
public void run() {
done.countDown();
remaining.incrementAndGet();
int n;
while (!Thread.interrupted() && (n = remaining.get()) > 0 && done.getCount() > 0) {
if (remaining.compareAndSet(n, n - 1)) {
try {
pool.execute(this);
} catch (RuntimeException ex) {
System.out.print("*");
while (done.getCount() > 0) done.countDown();
return;
}
}
}
}
public void testAdd() throws Exception {
getIdentitiesOfFiles();
fillFilesWithContent();
validateFilesContent(version.byteValue());
version.compareAndSet(1, 2);
continuousWrite.compareAndSet(true, false);
generateRemainingPagesQueueForAllFiles();
executeConcurrentRandomReadAndWriteOperations();
buffer.flushBuffer();
validateFilesContent(version.byteValue());
}
