// return true if file was added to queue
private boolean queueUpdate(@NotNull VirtualFile file) {
synchronized (filesToResolve) {
if (!(file instanceof VirtualFileWithId)) return false;
int fileId = getAbsId(file);
countAndMarkUnresolved(file, new LinkedHashSet<VirtualFile>(), true);
boolean alreadyAdded = fileIsInQueue.set(fileId);
if (!alreadyAdded) {
filesToResolve.add(file);
}
upToDate = false;
wakeUpUnderLock();
return !alreadyAdded;
}
}
