public static async Task <SemaphoreGuard> Async(SemaphoreSlim semaphore)
{
var guard = new SemaphoreGuard(semaphore, false);
await semaphore.WaitAsync();
return(guard);
}
public static async ValueTask <SemaphoreGuard> Async(SemaphoreSlim semaphore)
{
if (semaphore == null)
{
ThrowArgumnetNullException(nameof(semaphore));
return(null !);
}
var guard = new SemaphoreGuard(semaphore, false);
// try to grab it sync because it's faster
if (!semaphore.Wait(0))
{
await semaphore.WaitAsync().ConfigureAwait(false);
}
return(guard);
}
private static void ThrowObjectDisposedException(SemaphoreGuard guard) => throw new ObjectDisposedException(guard.ToString());