public static async Task InvalidExits() { using var rwLock = new AsyncReaderWriterLock(); Throws <SynchronizationLockException>(rwLock.ExitReadLock); Throws <SynchronizationLockException>(rwLock.ExitUpgradeableReadLock); Throws <SynchronizationLockException>(rwLock.ExitWriteLock); await rwLock.EnterReadLockAsync(TimeSpan.FromMilliseconds(10)); Throws <SynchronizationLockException>(rwLock.ExitUpgradeableReadLock); Throws <SynchronizationLockException>(rwLock.ExitWriteLock); rwLock.ExitReadLock(); await rwLock.EnterUpgradeableReadLockAsync(TimeSpan.FromMilliseconds(10)); Throws <SynchronizationLockException>(rwLock.ExitReadLock); Throws <SynchronizationLockException>(rwLock.ExitWriteLock); rwLock.ExitUpgradeableReadLock(); await rwLock.EnterWriteLockAsync(TimeSpan.FromMilliseconds(10)); Throws <SynchronizationLockException>(rwLock.ExitReadLock); Throws <SynchronizationLockException>(rwLock.ExitUpgradeableReadLock); rwLock.ExitWriteLock(); }
public static void GracefulShutdown2() { using var @lock = new AsyncReaderWriterLock(); True(@lock.TryEnterReadLock()); var task = @lock.DisposeAsync(); False(task.IsCompleted); var acquisition = @lock.EnterWriteLockAsync(CancellationToken.None); False(acquisition.IsCompleted); @lock.ExitReadLock(); True(task.IsCompletedSuccessfully); True(acquisition.IsFaulted); Throws <ObjectDisposedException>(acquisition.GetAwaiter().GetResult); }
public static async Task WriterToReaderChain() { using var are = new AutoResetEvent(false); using var rwLock = new AsyncReaderWriterLock(); await rwLock.EnterWriteLockAsync(DefaultTimeout); var task = new TaskCompletionSource <bool>(); ThreadPool.QueueUserWorkItem(async state => { False(await rwLock.TryEnterReadLockAsync(TimeSpan.FromMilliseconds(10))); True(ThreadPool.QueueUserWorkItem(static ev => ev.Set(), are, false)); await rwLock.EnterReadLockAsync(DefaultTimeout); rwLock.ExitReadLock(); task.SetResult(true); });