public async Task <bool> WaitSignaledAsync(TimeSpan timeout, CancellationToken cancellationToken)
{
var waitResult = await _semaphoreSlimSignalable.WaitSignaledAsync(timeout, cancellationToken).ConfigureAwait(false);
_enteredSemaphore = waitResult == SemaphoreWaitResult.Entered;
return(_enteredSemaphore);
}
public async Task WaitSignaledAsync_should_not_continue_on_signal_thread()
{
var cancelationTokenSource = new CancellationTokenSource();
var semaphore = new SemaphoreSlimSignalable(0);
var waitStartedEvent = new ManualResetEventSlim(false);
var signalThreadTerminated = false;
var signalThread = SignalThread();
for (int i = 0; i < 100; i++)
{
semaphore.Reset();
waitStartedEvent.Reset();
var waitSignaledTask = WaitSignaledTask();
await waitSignaledTask;
waitSignaledTask.Result.Should().NotBe(signalThread.ManagedThreadId);
}
Volatile.Write(ref signalThreadTerminated, true);
waitStartedEvent.Set();
signalThread.Join(100);
async Task <int> WaitSignaledTask()
{
await Task.Yield();
var waitTask = semaphore.WaitSignaledAsync(Timeout.InfiniteTimeSpan, cancelationTokenSource.Token);
waitStartedEvent.Set();
var waitResult = await waitTask;
waitResult.Should().Be(SemaphoreSlimSignalable.SemaphoreWaitResult.Signaled);
return(Thread.CurrentThread.ManagedThreadId);
}
Thread SignalThread()
{
var thread = new Thread(_ =>
{
while (!Volatile.Read(ref signalThreadTerminated))
{
waitStartedEvent.Wait();
waitStartedEvent.Reset();
semaphore.Signal();
}
});
thread.IsBackground = true;
thread.Start();
return(thread);
}
}
private Task <SemaphoreSlimSignalable.SemaphoreWaitResult>[] CreateWaitTasks(
SemaphoreSlimSignalable semaphore,
bool async,
bool isSignaledWait,
int threadsCount,
TimeSpan timeout,
CancellationToken cancellationToken = default) =>
async?
TasksUtils.CreateTasks(threadsCount, _ => isSignaledWait?semaphore.WaitSignaledAsync(timeout, cancellationToken) : semaphore.WaitAsync(timeout, cancellationToken)) :
TasksUtils.CreateTasksOnOwnThread(threadsCount, _ => isSignaledWait ? semaphore.WaitSignaled(timeout, cancellationToken) : semaphore.Wait(timeout, cancellationToken));
