@Override
public long getResult() {
long stamp = stampedLock.tryOptimisticRead(); // non blocking
long result = counter;
if (!stampedLock.validate(stamp)) {
// if a write occurred, try again with a read lock
stamp = stampedLock.readLock();
try {
return counter;
} finally {
stampedLock.unlockRead(stamp);
}
}
return result;
}
@GenerateMicroBenchmark
@Group("Stamped")
@GroupThreads(1)
public long stReads() {
long stamp;
long currentValue;
stamp = stampedLock.tryOptimisticRead();
BlackHole.consumeCPU(consumedCPU);
currentValue = stampedAdder;
if (!stampedLock.validate(stamp)) {
stamp = stampedLock.readLock();
try {
BlackHole.consumeCPU(consumedCPU);
currentValue = stampedAdder;
} finally {
stampedLock.unlockRead(stamp);
}
}
return currentValue;
}