Re: wait finishes early?
Mike Schilling wrote:
This looks to me like the correct logic, encapsulated reasonably well:
public class EventUtils
{
public static void waitforEvent(
long maxDelay, Object lock, EventChecker checker)
throws InterruptedException
{
synchronized(lock)
{
long start = System.currentTimeMillis();
long toWait = maxDelay;
while (true)
// Almost correct, should use:
while (!checker.isDone())
// because we don't want to wait if the event has already completed.
{
lock.wait(toWait);
if (checker.isDone())
break;
if (maxDelay > 0)
{
long elapsed = System.currentTimeMillis() - start;
if (elapsed >= maxDelay)
break;
toWait = maxDelay - elapsed;
}
}
}
}
public interface EventChecker
{
boolean isDone();
}
}
Using Lock and Condition classes may be a better choice for some code bases.
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