private void notifyPendingCountListeners(final Long currentPendingCount) {
pendingCountLock.lock();
try {
for (final Long limit : pendingCount_limitListener.keySet()) {
if (currentPendingCount <= limit) {
final Condition condition = pendingCount_limitListener.get(limit);
if (condition != null) {
condition.signalAll();
}
}
}
} finally {
pendingCountLock.unlock();
}
}
/**
* Waits for pendingCount to shrink to a given limit size.
*
* <p>WARNING: Pay attention when using this feature so that executors don't have circular task
* dependencies. If they depend on each others pendingCount, this may cause a deadlock!
*/
public void awaitPendingCount(final long limit) throws InterruptedException {
pendingCountLock.lock();
try {
final Condition condition = pendingCount_limitListener.get(limit);
while (getPendingCount() > limit) {
Threads.throwIfInterrupted();
condition.await();
}
} finally {
pendingCountLock.unlock();
}
}