RejectedExecutionHandler rejectedExecutionHandler = profile.getRejectedExecutionHandler();
if (rejectedExecutionHandler == null) {
rejectedExecutionHandler = new ThreadPoolExecutor.CallerRunsPolicy();
}
ScheduledThreadPoolExecutor answer = new RejectableScheduledThreadPoolExecutor(profile.getPoolSize(), threadFactory, rejectedExecutionHandler);
// TODO: when JDK7 we should setRemoveOnCancelPolicy(true)
// need to wrap the thread pool in a sized to guard against the problem that the
// JDK created thread pool has an unbounded queue (see class javadoc), which mean
// we could potentially keep adding tasks, and run out of memory.