public static async Task CorrectGarbageCollection()
{
for (int j = 0; j < 10; j++)
{
Task t1, t2;
using (var barrier = new AsyncBarrier(3))
{
t1 = barrier.SignalAndWait();
t2 = barrier.SignalAndWait();
await barrier.SignalAndWait();
GC.Collect();
await Task.WhenAll(t1, t2);
}
}
}
public static async Task RemovingWaitingParticipants()
{
using (var barrier = new AsyncBarrier(4))
{
var task = barrier.SignalAndWait();
while (barrier.ParticipantsRemaining > 3)
{
await Task.Delay(100);
}
barrier.RemoveParticipants(2);
Equal(1, barrier.ParticipantsRemaining);
Throws <ArgumentOutOfRangeException>(() => barrier.RemoveParticipants(20));
Equal(1, barrier.ParticipantsRemaining);
barrier.RemoveParticipant();
Equal(0, barrier.ParticipantsRemaining);
}
}
public static async Task PhaseCompletion()
{
using (var barrier = new AsyncBarrier(3))
{
ICollection <Task> tasks = new LinkedList <Task>();
Equal(0, barrier.CurrentPhaseNumber);
tasks.Add(barrier.SignalAndWait());
tasks.Add(barrier.SignalAndWait());
tasks.Add(barrier.SignalAndWait());
await Task.WhenAll(tasks);
Equal(1, barrier.CurrentPhaseNumber);
tasks.Clear();
tasks.Add(barrier.SignalAndWait());
tasks.Add(barrier.SignalAndWait());
tasks.Add(barrier.SignalAndWait());
await Task.WhenAll(tasks);
Equal(2, barrier.CurrentPhaseNumber);
}
}