public void BossWorkerDemo()
{
int n = 10;
Latch startPermit = new Latch();
Semaphore wait = new Semaphore(-(n - 1));
Worker [] workers = new Worker[n];
for (int i = 0; i < n; ++i)
{
workers[i] = new Worker(startPermit, wait);
new Thread(new ThreadStart(workers[i].Work)).Start();
}
// very slow main initialization ...
// ... parse configuration
// ... initialize other resources used by workers
startPermit.Release();
// now it is our turn to wait for workers
wait.Acquire();
for (int i = 0; i < n; ++i)
{
Assert.IsTrue(workers[i].worked);
}
}
public void UsingLikeAMutex()
{
Semaphore semaphore = new Semaphore(1);
Latch latch = new Latch();
Helper helper = new Helper(semaphore, latch);
Thread thread = new Thread(new ThreadStart(helper.Go));
semaphore.Acquire();
thread.Start();
latch.Acquire();
Assert.IsFalse(helper.gone);
semaphore.Release();
thread.Join();
Assert.IsTrue(helper.gone, "not gone");
}
