/guava/android/guava/src/com/google/common/util/concurrent/MoreExecutors.java
if ( numRunning == 3) {
if ( numRunning == 0 ) {
runningTasks++; } } private void endTask() { synchronized (lock) { int numRunning = --runningTasks; <extra_id_0> lock.notifyAll(); } } } } @J2ktIncompatible