private void readProcessorLoop() {
boolean check_high_first = true;
while (true) {
loop_count++;
try {
if (check_high_first) {
check_high_first = false;
if (!doHighPriorityRead()) {
if (!doNormalPriorityRead()) {
if (read_waiter.waitForEvent(hasConnections() ? IDLE_SLEEP_TIME : 1000)) {
wait_count++;
}
}
}
} else {
check_high_first = true;
if (!doNormalPriorityRead()) {
if (!doHighPriorityRead()) {
if (read_waiter.waitForEvent(hasConnections() ? IDLE_SLEEP_TIME : 1000)) {
wait_count++;
}
}
}
}
} catch (Throwable t) {
Debug.out("readProcessorLoop() EXCEPTION: ", t);
}
}
}
/**
* Add the given entity to the controller for read processing.
*
* @param entity to process reads for
*/
public void addReadEntity(RateControlledEntity entity) {
try {
entities_mon.enter();
if (entity.getPriority() == RateControlledEntity.PRIORITY_HIGH) {
// copy-on-write
ArrayList<RateControlledEntity> high_new =
new ArrayList<RateControlledEntity>(high_priority_entities.size() + 1);
high_new.addAll(high_priority_entities);
high_new.add(entity);
high_priority_entities = high_new;
} else {
// copy-on-write
ArrayList<RateControlledEntity> norm_new =
new ArrayList<RateControlledEntity>(normal_priority_entities.size() + 1);
norm_new.addAll(normal_priority_entities);
norm_new.add(entity);
normal_priority_entities = norm_new;
}
entity_count = normal_priority_entities.size() + high_priority_entities.size();
} finally {
entities_mon.exit();
}
read_waiter.eventOccurred();
}
private boolean doRead(RateControlledEntity ready_entity) {
if (ready_entity != null) {
if (AGGRESIVE_READ) {
// skip over failed readers to find a good one
if (ready_entity.doProcessing(read_waiter, 0) > 0) {
progress_count++;
return (true);
} else {
non_progress_count++;
if (entity_check_count - last_entity_check_count
>= normal_priority_entities.size() + high_priority_entities.size()) {
last_entity_check_count = entity_check_count;
// force a wait
if (read_waiter.waitForEvent(IDLE_SLEEP_TIME)) {
wait_count++;
}
return (false);
}
return (true);
}
} else {
return (ready_entity.doProcessing(read_waiter, 0) > 0);
}
}
return false;
}