void checkIfFinished(SearchPerformer performer) {
SearchTask pendingTask = null;
synchronized (tasks) {
Iterator<SearchTask> it = tasks.iterator();
while (it.hasNext() && pendingTask == null) {
SearchTask task = it.next();
if (task.getToken() == performer.getToken() && !task.isStopped()) {
pendingTask = task;
}
if (task.isStopped()) {
it.remove();
}
}
}
if (pendingTask == null) {
onFinished(performer.getToken());
}
}
