public void ShouldNotDeadlock()
{
SimpleBlockingQueue _bq = new SimpleBlockingQueue();
const int THREAD_COUNT = 50;
Thread[] putThreads = new Thread[THREAD_COUNT];
Thread[] getThreads = new Thread[THREAD_COUNT + (THREAD_COUNT / 2)];
Thread[] disableThreads = new Thread[THREAD_COUNT / 2];
for (int i = 0; i < getThreads.Length; i += 1)
{
getThreads[i] = new Thread(() =>
{
_bq.Get();
_bq.Get();
});
getThreads[i].Start();
}
for (int i = 0; i < putThreads.Length; i += 1)
{
var capture = i;
putThreads[i] = new Thread(() =>
{
_bq.Put(capture);
_bq.Put(capture + putThreads.Length);
});
putThreads[i].Start();
}
for (int i = 0; i < disableThreads.Length; i += 1)
{
disableThreads[i] = new Thread(() =>
{
_bq.Disable();
});
disableThreads[i].Start();
}
for (int i = 0; i < putThreads.Length; i += 1)
{
putThreads[i].Join();
}
for (int i = 0; i < getThreads.Length; i += 1)
{
getThreads[i].Join();
}
for (int i = 0; i < disableThreads.Length; i += 1)
{
disableThreads[i].Join();
}
// if we get here then there was no deadlock
}
private static void Test()
{
const int THREAD_COUNT = 5;
Thread[] putThreads = new Thread[THREAD_COUNT];
Thread[] getThreads = new Thread[THREAD_COUNT + (THREAD_COUNT / 2)];
Thread[] disableThreads = new Thread[THREAD_COUNT / 2];
for (int i = 0; i < getThreads.Length; i += 1)
{
getThreads[i] = new Thread(() =>
{
_bq.Get();
_bq.Get();
});
getThreads[i].Start();
}
for (int i = 0; i < putThreads.Length; i += 1)
{
var capture = i;
putThreads[i] = new Thread(() =>
{
_bq.Put(capture);
_bq.Put(capture + putThreads.Length);
});
putThreads[i].Start();
}
for (int i = 0; i < disableThreads.Length; i += 1)
{
disableThreads[i] = new Thread(() =>
{
_bq.Disable();
});
disableThreads[i].Start();
}
for (int i = 0; i < putThreads.Length; i += 1)
{
putThreads[i].Join();
}
for (int i = 0; i < getThreads.Length; i += 1)
{
getThreads[i].Join();
}
for (int i = 0; i < disableThreads.Length; i += 1)
{
disableThreads[i].Join();
}
Console.WriteLine("---");
Console.WriteLine("All threads completed without deadlocks.");
}
public void ShouldReturnNullAfterDisabling()
{
SimpleBlockingQueue target = new SimpleBlockingQueue();
int testValue = 1;
target.Put(testValue);
var testValueBackBeforeDisable = target.Get();
Assert.AreEqual(testValue, testValueBackBeforeDisable);
target.Put(testValue);
target.Disable();
var testValueBackAfterDisable = target.Get();
Assert.AreEqual(null, testValueBackAfterDisable);
}