public void SignalOnWaitingThread()
{
WaitNode node = new WaitNode();
IQueuedSync mockQueuedSync = MockRepository.GenerateMock <IQueuedSync>();
node.Signal(mockQueuedSync);
mockQueuedSync.AssertWasCalled(m => m.TakeOver(node));
}
public bool IsWaiting(Thread thread)
{
if (thread == null) throw new ArgumentNullException("thread");
for (WaitNode node = _head; node != null; node = node.NextWaitNode)
{
if (node.IsWaiting && node.Owner == thread) return true;
}
return false;
}
public WaitNode Dequeue()
{
if (_head == null) return null;
WaitNode w = _head;
_head = w.NextWaitNode;
if (_head == null) _tail = null;
w.NextWaitNode = null;
return w;
}
public void Enqueue(WaitNode waitNode)
{
if (_tail == null)
_head = _tail = waitNode;
else
{
_tail.NextWaitNode = waitNode;
_tail = waitNode;
}
}
public void WaitingThreads()
{
WaitNode node = new WaitNode();
FIFOWaitQueue queue = new FIFOWaitQueue();
Assert.AreEqual(0, queue.WaitingThreads.Count);
Assert.IsFalse(queue.IsWaiting(Thread.CurrentThread));
queue.Enqueue(node);
Assert.AreEqual(1, queue.WaitingThreads.Count);
Assert.IsTrue(queue.IsWaiting(Thread.CurrentThread));
}
public void Enqueue(WaitNode waitNode)
{
if (_tail == null)
_head = _tail = waitNode;
else
{
_tail.NextWaitNode = waitNode;
_tail = waitNode;
}
}
public WaitNode Dequeue()
{
if (_head == null) return null;
WaitNode w = _head;
_head = w.NextWaitNode;
if (_head == null) _tail = null;
w.NextWaitNode = null;
return w;
}
public void WaitingThreads()
{
WaitNode node = new WaitNode();
FIFOWaitQueue queue = new FIFOWaitQueue();
Assert.AreEqual(0, queue.WaitingThreads.Count);
Assert.IsFalse(queue.IsWaiting(Thread.CurrentThread));
queue.Enqueue(node);
Assert.AreEqual(1, queue.WaitingThreads.Count);
Assert.IsTrue(queue.IsWaiting(Thread.CurrentThread));
}
public void Enqueue(WaitNode w)
{
if (_tail == null)
{
_head = _tail = w;
}
else
{
_tail.NextWaitNode = w;
_tail = w;
}
}
public void EnqueueAndDequeueElements()
{
WaitNode node = new WaitNode();
WaitNode node1 = new WaitNode();
FIFOWaitQueue queue = new FIFOWaitQueue();
Assert.AreEqual(null, queue.Dequeue());
queue.Enqueue(node1);
queue.Enqueue(node);
Assert.AreEqual(2, queue.Length);
Assert.IsTrue(queue.HasNodes);
Assert.AreEqual(node1, queue.Dequeue());
Assert.AreEqual(node, queue.Dequeue());
Assert.IsFalse(queue.HasNodes);
}
public void EnqueueAndDequeueElements()
{
WaitNode node = new WaitNode();
WaitNode node1 = new WaitNode();
FIFOWaitQueue queue = new FIFOWaitQueue();
Assert.AreEqual(null, queue.Dequeue());
queue.Enqueue(node1);
queue.Enqueue(node);
Assert.AreEqual(2, queue.Length);
Assert.IsTrue(queue.HasNodes);
Assert.AreEqual(node1, queue.Dequeue());
Assert.AreEqual(node, queue.Dequeue());
Assert.IsFalse(queue.HasNodes);
}
public WaitNode Dequeue()
{
if (_head == null)
{
return(null);
}
WaitNode w = _head;
_head = w.NextWaitNode;
if (_head == null)
{
_tail = null;
}
w.NextWaitNode = null;
return(w);
}
public void TakeOver(WaitNode node)
{
}
public bool Recheck(WaitNode node)
{
return false;
}
private void DoWait(Action<WaitNode> action)
{
int holdCount = Lock.HoldCount;
if (holdCount == 0)
{
throw new SynchronizationLockException();
}
WaitNode n = new WaitNode();
_wq.Enqueue(n);
for (int i = holdCount; i > 0; i--) Lock.Unlock();
try
{
action(n);
}
finally
{
for (int i = holdCount; i > 0; i--) Lock.Lock();
}
}
public override void LockInterruptibly()
{
Thread caller = Thread.CurrentThread;
lock (this)
{
if (GetHold(caller)) return;
}
WaitNode n = new WaitNode();
n.DoWait(this);
}
public override bool TryLock(TimeSpan timespan)
{
Thread caller = Thread.CurrentThread;
lock (this)
{
if (_owner == null)
{
_owner = caller;
_holds = 1;
return true;
}
else if (caller == _owner)
{
++_holds;
return true;
}
}
WaitNode n = new WaitNode();
return n.DoTimedWait(this, timespan);
}
public void TakeOver(WaitNode node)
{
lock (this)
{
Debug.Assert(_holds == 1 && _owner == Thread.CurrentThread);
_owner = node.Owner;
}
}
public bool Recheck(WaitNode node)
{
lock (this)
{
Thread caller = Thread.CurrentThread;
if (_owner == null)
{
_owner = caller;
_holds = 1;
return true;
}
else if (caller == _owner)
{
++_holds;
return true;
}
_wq.Enqueue(node);
return false;
}
}
public override void LockInterruptibly()
{
Thread caller = Thread.CurrentThread;
lock (this)
{
if (_owner == null)
{
_owner = caller;
_holds = 1;
return;
}
else if (caller == _owner)
{
++_holds;
return;
}
}
WaitNode n = new WaitNode();
n.DoWait(this);
}
public bool Recheck(WaitNode node)
{
Thread caller = Thread.CurrentThread;
lock (this)
{
if(GetHold(caller)) return true;
_wq.Enqueue(node);
return false;
}
}
public override bool TryLock(TimeSpan timespan)
{
Thread caller = Thread.CurrentThread;
lock (this)
{
if (GetHold(caller)) return true;
}
WaitNode n = new WaitNode();
return n.DoTimedWait(this, timespan);
}
