public static void FailFastLock() { using var sharedLock = new AsyncSharedLock(3); True(sharedLock.TryAcquire(false)); True(sharedLock.TryAcquire(false)); True(sharedLock.TryAcquire(false)); False(sharedLock.TryAcquire(true)); False(sharedLock.TryAcquire(false)); sharedLock.Release(); sharedLock.Release(); sharedLock.Release(); True(sharedLock.TryAcquire(true)); False(sharedLock.TryAcquire(false)); }
private static async void AcquireWeakLockAndRelease(AsyncSharedLock sharedLock, AsyncCountdownEvent acquireEvent) { await Task.Delay(100); await sharedLock.Acquire(false, TimeSpan.Zero); acquireEvent.Signal(); await Task.Delay(100); sharedLock.Release(); }
public static void GracefulShutdown() { using var @lock = new AsyncSharedLock(3); True(@lock.TryAcquire(false)); var task = @lock.DisposeAsync(); False(task.IsCompleted); @lock.Release(); True(task.IsCompletedSuccessfully); Throws <ObjectDisposedException>(() => @lock.TryAcquire(true)); }
public static void DowngradeFromStrongToWeakLock() { using var sharedLock = new AsyncSharedLock(3); True(sharedLock.TryAcquire(true)); Equal(0, sharedLock.RemainingCount); False(sharedLock.TryAcquire(false)); sharedLock.Downgrade(); Equal(2, sharedLock.RemainingCount); sharedLock.Release(); Equal(3, sharedLock.RemainingCount); }
public static async Task StrongToWeakLockTransition() { using var acquireEvent = new AsyncCountdownEvent(2L); using var sharedLock = new AsyncSharedLock(3); await sharedLock.AcquireAsync(true, TimeSpan.Zero); AcquireWeakLock(sharedLock, acquireEvent); AcquireWeakLock(sharedLock, acquireEvent); sharedLock.Release(); True(await acquireEvent.WaitAsync(DefaultTimeout)); Equal(1, sharedLock.RemainingCount); }
public static async Task StrongToWeakLockTransition() { using (var acquireEvent = new AsyncCountdownEvent(2L)) using (var sharedLock = new AsyncSharedLock(3)) { await sharedLock.Acquire(true, TimeSpan.Zero); AcquireWeakLock(sharedLock, acquireEvent); AcquireWeakLock(sharedLock, acquireEvent); sharedLock.Release(); True(await acquireEvent.Wait(TimeSpan.FromMinutes(1))); Equal(1, sharedLock.RemainingCount); } }
public static void GracefulShutdown4() { using var @lock = new AsyncSharedLock(3); True(@lock.TryAcquire(true)); var acquisition1 = @lock.AcquireAsync(false, CancellationToken.None); False(acquisition1.IsCompleted); var task = @lock.DisposeAsync(); False(task.IsCompleted); var acquisition2 = @lock.AcquireAsync(false, CancellationToken.None); False(task.IsCompleted); @lock.Release(); True(acquisition1.IsCompletedSuccessfully); False(acquisition2.IsCompleted); False(task.IsCompleted); @lock.Release(); True(acquisition2.IsFaulted); True(task.IsCompletedSuccessfully); Throws <ObjectDisposedException>(acquisition2.GetAwaiter().GetResult); }
public static async Task WeakLocks() { using var sharedLock = new AsyncSharedLock(3); Equal(3, sharedLock.ConcurrencyLevel); True(await sharedLock.TryAcquireAsync(false, TimeSpan.Zero)); True(await sharedLock.TryAcquireAsync(false, TimeSpan.Zero)); Equal(1, sharedLock.RemainingCount); True(await sharedLock.TryAcquireAsync(false, TimeSpan.Zero)); Equal(0, sharedLock.RemainingCount); False(await sharedLock.TryAcquireAsync(false, TimeSpan.Zero)); False(await sharedLock.TryAcquireAsync(true, TimeSpan.Zero)); sharedLock.Release(); Equal(1, sharedLock.RemainingCount); False(await sharedLock.TryAcquireAsync(true, TimeSpan.Zero)); True(await sharedLock.TryAcquireAsync(false, TimeSpan.Zero)); }
public static async Task WeakLocks() { using (var sharedLock = new AsyncSharedLock(3)) { True(await sharedLock.TryAcquire(false, TimeSpan.Zero)); True(await sharedLock.TryAcquire(false, TimeSpan.Zero)); Equal(1, sharedLock.RemainingCount); True(await sharedLock.TryAcquire(false, TimeSpan.Zero)); Equal(0, sharedLock.RemainingCount); False(await sharedLock.TryAcquire(false, TimeSpan.Zero)); False(await sharedLock.TryAcquire(true, TimeSpan.Zero)); sharedLock.Release(); Equal(1, sharedLock.RemainingCount); False(await sharedLock.TryAcquire(true, TimeSpan.Zero)); True(await sharedLock.TryAcquire(false, TimeSpan.Zero)); } }