public void MultipleWaits_NotifyAll_AllAreCompleted()
{
AsyncContext.Run(async () =>
{
var mutex = new AsyncLock();
var cv = new AsyncConditionVariable(mutex);
var key1 = await mutex.LockAsync();
var task1 = cv.WaitAsync();
var __ = task1.ContinueWith(_ => key1.Dispose());
var key2 = await mutex.LockAsync();
var task2 = cv.WaitAsync();
var ___ = task2.ContinueWith(_ => key2.Dispose());
await Task.Run(async () =>
{
using (await mutex.LockAsync())
{
cv.NotifyAll();
}
});
await task1;
await task2;
});
}
public void WaitAsync_WithoutNotify_IsNotCompleted()
{
Test.Async(async () =>
{
var mutex = new AsyncLock();
var cv = new AsyncConditionVariable(mutex);
await mutex.LockAsync();
var task = cv.WaitAsync();
await AssertEx.NeverCompletesAsync(task);
});
}
/// <summary>
/// Creates a new async-compatible producer/consumer queue with the specified initial elements and a maximum element count.
/// </summary>
/// <param name="collection">The initial elements to place in the queue. This may be <c>null</c> to start with an empty collection.</param>
/// <param name="maxCount">The maximum element count. This must be greater than zero, and greater than or equal to the number of elements in <paramref name="collection"/>.</param>
public AsyncProducerConsumerQueue(IEnumerable <T> collection, int maxCount)
{
if (maxCount <= 0)
{
throw new ArgumentOutOfRangeException(nameof(maxCount), "The maximum count must be greater than zero.");
}
_queue = collection == null ? new Queue <T>() : new Queue <T>(collection);
if (maxCount < _queue.Count)
{
throw new ArgumentException("The maximum count cannot be less than the number of elements in the collection.", nameof(maxCount));
}
_maxCount = maxCount;
_mutex = new AsyncLock();
_completedOrNotFull = new AsyncConditionVariable(_mutex);
_completedOrNotEmpty = new AsyncConditionVariable(_mutex);
}
/// <summary>
/// Creates a new async-compatible producer/consumer collection wrapping the specified collection and with a maximum element count.
/// </summary>
/// <param name="collection">The collection to wrap.</param>
/// <param name="maxCount">The maximum element count. This must be greater than zero.</param>
public AsyncCollection(IProducerConsumerCollection <T>?collection, int maxCount)
{
collection ??= new ConcurrentQueue <T>();
if (maxCount <= 0)
{
throw new ArgumentOutOfRangeException(nameof(maxCount), "The maximum count must be greater than zero.");
}
if (maxCount < collection.Count)
{
throw new ArgumentException("The maximum count cannot be less than the number of elements in the collection.", nameof(maxCount));
}
_collection = collection;
_maxCount = maxCount;
_mutex = new AsyncLock();
_completedOrNotFull = new AsyncConditionVariable(_mutex);
_completedOrNotEmpty = new AsyncConditionVariable(_mutex);
}
public void WaitAsync_Notified_IsCompleted()
{
Test.Async(async () =>
{
var mutex = new AsyncLock();
var cv = new AsyncConditionVariable(mutex);
await mutex.LockAsync();
var task = cv.WaitAsync();
await TaskShim.Run(async () =>
{
using (await mutex.LockAsync())
{
cv.Notify();
}
});
await task;
});
}
public void WaitAsync_AfterNotify_IsNotCompleted()
{
Test.Async(async () =>
{
var mutex = new AsyncLock();
var cv = new AsyncConditionVariable(mutex);
await TaskShim.Run(async () =>
{
using (await mutex.LockAsync())
{
cv.Notify();
}
});
await mutex.LockAsync();
var task = cv.WaitAsync();
await AssertEx.NeverCompletesAsync(task);
});
}
/// <summary>
/// Constructs a new monitor.
/// </summary>
public AsyncMonitor(IAsyncWaitQueue <IDisposable> lockQueue, IAsyncWaitQueue <object> conditionVariableQueue)
{
_asyncLock = new AsyncLock(lockQueue);
_conditionVariable = new AsyncConditionVariable(_asyncLock, conditionVariableQueue);
//Enlightenment.Trace.AsyncMonitor_Created(_asyncLock, _conditionVariable);
}
public DebugView(AsyncConditionVariable cv)
{
_cv = cv;
}
/// <summary>
/// Constructs a new monitor.
/// </summary>
public AsyncMonitor(IAsyncWaitQueue<IDisposable> lockQueue, IAsyncWaitQueue<object> conditionVariableQueue)
{
_asyncLock = new AsyncLock(lockQueue);
_conditionVariable = new AsyncConditionVariable(_asyncLock, conditionVariableQueue);
//Enlightenment.Trace.AsyncMonitor_Created(_asyncLock, _conditionVariable);
}
/// <summary>
/// Constructs a new monitor.
/// </summary>
/// <param name="lockQueue">The wait queue used to manage waiters for the lock. This may be <c>null</c> to use a default (FIFO) queue.</param>
/// <param name="conditionVariableQueue">The wait queue used to manage waiters for the signal. This may be <c>null</c> to use a default (FIFO) queue.</param>
internal AsyncMonitor(IAsyncWaitQueue <IDisposable>?lockQueue, IAsyncWaitQueue <object>?conditionVariableQueue)
{
_asyncLock = new AsyncLock(lockQueue);
_conditionVariable = new AsyncConditionVariable(_asyncLock, conditionVariableQueue);
}
public DebugView(AsyncConditionVariable cv)
{
_cv = cv;
}
public void Id_IsNotZero()
{
var mutex = new AsyncLock();
var cv = new AsyncConditionVariable(mutex);
Assert.AreNotEqual(0, cv.Id);
}
public void MultipleWaits_Notify_OneIsCompleted()
{
Test.Async(async () =>
{
var mutex = new AsyncLock();
var cv = new AsyncConditionVariable(mutex);
var key = await mutex.LockAsync();
var task1 = cv.WaitAsync();
var __ = task1.ContinueWith(_ => key.Dispose());
await mutex.LockAsync();
var task2 = cv.WaitAsync();
await TaskShim.Run(async () =>
{
using (await mutex.LockAsync())
{
cv.Notify();
}
});
await task1;
await AssertEx.NeverCompletesAsync(task2);
});
}