public void GetWaitQueueLengthChokesWhenNotLocked(bool isFair)
{
_lock = new ReentrantLock(isFair);
ICondition c = (_lock.NewCondition());
_lock.GetWaitQueueLength(c);
}
[Test] public void AwaitAfterMultipleReentrantLockingPreservesLockCount([Values(true, false)] bool isFair)
{
_lock = new ReentrantLock(isFair);
ICondition c = _lock.NewCondition();
ThreadManager.StartAndAssertRegistered(
"T",
delegate
{
using (_lock.Lock())
{
Assert.That(_lock.HoldCount, Is.EqualTo(1));
c.Await();
Assert.That(_lock.HoldCount, Is.EqualTo(1));
}
},
delegate
{
using (_lock.Lock())
using (_lock.Lock())
{
Assert.That(_lock.HoldCount, Is.EqualTo(2));
c.Await();
Assert.That(_lock.HoldCount, Is.EqualTo(2));
}
});
Thread.Sleep(Delays.Short);
Assert.IsFalse(_lock.IsLocked);
using (_lock.Lock()) c.SignalAll();
ThreadManager.JoinAndVerify();
}
[Test] public void AwaitUninterruptiblyCannotBeInterrupted([Values(true, false)] bool isFair)
{
_lock = new ReentrantLock(isFair);
ICondition c = _lock.NewCondition();
UninterruptableThread thread = new UninterruptableThread(_lock, c);
thread.InternalThread.Start();
while (!thread.LockStarted)
{
Thread.Sleep(100);
}
_lock.Lock();
try
{
thread.InternalThread.Interrupt();
thread.CanAwake = true;
c.Signal();
}
finally
{
_lock.Unlock();
}
ThreadManager.JoinAndVerify(thread.InternalThread);
Assert.IsTrue(thread.Interrupted);
}
[Test] public void HasWaitersReturnTrueWhenThreadIsWaitingElseFalse([Values(true, false)] bool isFair)
{
_lock = new ReentrantLock(true);
ICondition c = _lock.NewCondition();
ThreadManager.StartAndAssertRegistered(
"T1",
delegate
{
using (_lock.Lock())
{
Assert.IsFalse(_lock.HasWaiters(c));
Assert.That(_lock.GetWaitQueueLength(c), Is.EqualTo(0));
c.Await();
}
});
Thread.Sleep(Delays.Short);
_lock.Lock();
Assert.IsTrue(_lock.HasWaiters(c));
Assert.AreEqual(1, _lock.GetWaitQueueLength(c));
c.Signal();
_lock.Unlock();
Thread.Sleep(Delays.Short);
_lock.Lock();
Assert.IsFalse(_lock.HasWaiters(c));
Assert.AreEqual(0, _lock.GetWaitQueueLength(c));
_lock.Unlock();
ThreadManager.JoinAndVerify();
}
public void HasWaitersChokesWhenNotLocked(bool isFair)
{
_lock = new ReentrantLock(isFair);
ICondition c = _lock.NewCondition();
_lock.HasWaiters(c);
}
public void SignalChokesWhenLockIsNotOwned([Values(true, false)] bool isFair)
{
_lock = new ReentrantLock(isFair);
ICondition c = _lock.NewCondition();
c.Signal();
}
public void GetWaitQueueLengthChokesWhenNotOwned([Values(true, false)] bool isFair)
{
_lock = new ReentrantLock(isFair);
ICondition c = (_lock.NewCondition());
ReentrantLock lock2 = new ReentrantLock(isFair);
lock2.GetWaitQueueLength(c);
}
public void HasWaitersChokesWhenNotOwned([Values(true, false)] bool isFair)
{
_lock = new ReentrantLock(isFair);
ICondition c = _lock.NewCondition();
ReentrantLock lock2 = new ReentrantLock(isFair);
lock2.HasWaiters(c);
}
[Test] public void AwaitUntilTimeoutWithoutSignal([Values(true, false)] bool isFair)
{
_lock = new ReentrantLock(isFair);
ICondition c = _lock.NewCondition();
_lock.Lock();
DateTime until = DateTime.UtcNow.AddMilliseconds(10);
bool result = c.AwaitUntil(until);
Assert.That(DateTime.UtcNow, Is.GreaterThanOrEqualTo(until));
Assert.IsFalse(result);
_lock.Unlock();
}
public void GetWaitQueueLengthReturnsNumberOfThreads(bool isFair)
{
_lock = new ReentrantLock(isFair);
ICondition c = _lock.NewCondition();
ThreadManager.StartAndAssertRegistered(
"T1",
delegate
{
using (_lock.Lock())
{
Assert.IsFalse(_lock.HasWaiters(c));
Assert.AreEqual(0, _lock.GetWaitQueueLength(c));
c.Await();
}
});
Thread.Sleep(Delays.Short);
ThreadManager.StartAndAssertRegistered(
"T2",
delegate
{
using (_lock.Lock())
{
Assert.IsTrue(_lock.HasWaiters(c));
Assert.AreEqual(1, _lock.GetWaitQueueLength(c));
c.Await();
}
});
try
{
Thread.Sleep(Delays.Short);
_lock.Lock();
Assert.IsTrue(_lock.HasWaiters(c));
Assert.AreEqual(2, _lock.GetWaitQueueLength(c));
c.SignalAll();
_lock.Unlock();
Thread.Sleep(Delays.Short);
_lock.Lock();
Assert.IsFalse(_lock.HasWaiters(c));
Assert.AreEqual(0, _lock.GetWaitQueueLength(c));
_lock.Unlock();
}
finally
{
ThreadManager.JoinAndVerify();
}
}
[Test] public void SignalAllWakesUpAllThreads([Values(true, false)] bool isFair)
{
_lock = new ReentrantLock(isFair);
ICondition c = _lock.NewCondition();
ThreadStart cAwait = delegate { using (_lock.Lock()) c.Await(); };
ThreadManager.StartAndAssertRegistered("T", cAwait, cAwait);
Thread.Sleep(Delays.Short);
_lock.Lock();
c.SignalAll();
_lock.Unlock();
ThreadManager.JoinAndVerify();
}
[Test] public void AwaitUntilIsInterruptible([Values(true, false)] bool isFair)
{
_lock = new ReentrantLock(isFair);
ICondition c = _lock.NewCondition();
Thread t = ThreadManager.StartAndAssertRegistered(
"T1",
() => Assert.Throws <ThreadInterruptedException>(
() => { using (_lock.Lock()) c.AwaitUntil(DateTime.UtcNow.AddMilliseconds(10000)); }));
Thread.Sleep(Delays.Short);
t.Interrupt();
ThreadManager.JoinAndVerify();
}
[Test] public void AwaitNanosIsInterruptible([Values(true, false)] bool isFair)
{
_lock = new ReentrantLock(isFair);
ICondition c = _lock.NewCondition();
Thread t = ThreadManager.StartAndAssertRegistered(
"T1",
() => Assert.Throws <ThreadInterruptedException>(
() => { using (_lock.Lock()) c.Await(new TimeSpan(0, 0, 0, 1)); }));
Thread.Sleep(Delays.Short);
t.Interrupt();
ThreadManager.JoinAndVerify();
}
[Test] public void AwaitReturnsWhenSignalled([Values(true, false)] bool isFair)
{
_lock = new ReentrantLock(isFair);
ICondition c = _lock.NewCondition();
ThreadManager.StartAndAssertRegistered(
"T1",
() => { using (_lock.Lock()) c.Await(); });
Thread.Sleep(Delays.Short);
_lock.Lock();
c.Signal();
_lock.Unlock();
ThreadManager.JoinAndVerify();
}
[Test] public void AwaitTimeoutWithoutSignal([Values(true, false)] bool isFair)
{
TimeSpan timeToWait = Delays.Short;
_lock = new ReentrantLock(isFair);
ICondition c = _lock.NewCondition();
_lock.Lock();
Stopwatch sw = new Stopwatch();
sw.Start();
bool result = c.Await(timeToWait);
sw.Stop();
Assert.IsFalse(result);
Assert.That(sw.Elapsed + TimeSpan.FromMilliseconds(0.5), Is.Not.LessThan(timeToWait));
_lock.Unlock();
}