Consumer<S> check(long maxTime, PooledFatPipe parent) {
if (parent != null && parent.group == null) return null;
AtomicLongArray outUse = this.outUse;
Consumer<S>[] consumers = this.consumers;
long now = System.nanoTime();
if (consumers.length > outUse.length()) {
logger.warn("skipping check " + outUse.length() + "/" + consumers.length);
return null;
}
try {
for (int i = 0; i < consumers.length; i++) {
long time = outUse.get(i);
if (time == 0) continue;
if (time == -1) continue;
if (now < time + maxTime * 1_000_000) continue;
if (parent != null) parent.group.list();
return consumers[i];
}
} catch (Exception e) {
logger.error("check", e);
}
return null;
}
/**
* @param product
* @param sequence
* @return false if there is an error
*/
boolean consume(S product, long sequence, long sleep) {
if (product == null) return true;
// make copies
Consumer<S>[] consumers = this.consumers;
AtomicLongArray outUse = this.outUse;
long[] consumerSeqs = this.consumerSeqs;
if (outUse.length() != consumers.length) return false;
for (int j = 0; j < consumers.length; j++) {
if (!consumers[j].isConsuming()) continue;
long time = System.nanoTime();
if (!outUse.compareAndSet(j, 0, time)) continue;
try {
if (sequence <= consumerSeqs[j]) {
outUse.lazySet(j, 0);
if (outUse != this.outUse) resetConsumer(consumers[j]);
break;
}
consumerSeqs[j] = sequence;
consumers[j].consume(product, time);
if (sleep > 0) Thread.sleep(sleep);
outUse.lazySet(j, 0);
if (outUse != this.outUse) {
resetConsumer(consumers[j]);
break;
}
} catch (Exception e) {
if (listener == null) logger.error("consume", e);
else listener.exceptionThrown(e);
}
}
finishConsuming(product, sequence);
return true;
}
