private void ReleaseLock(KeyT name, AsyncLockWithWaiterCount lockEntry, IDisposable lockHandle)
#endif
{
#if NOASYNC
Monitor.Exit(lockEntry.LockEntry);
#else
lockHandle.Dispose();
#endif
lock (DictionaryAccessMutex)
//DictionaryAccessMutex.Wait();
//try
{
lockEntry.WaiterCount--;
Debug.Assert(lockEntry.WaiterCount >= 0);
if (lockEntry.WaiterCount == 0) //NB!
{
LockQueueDictionary.Remove(name);
}
}
//finally
//{
// DictionaryAccessMutex.Release();
//}
}
internal LockDictReleaser(KeyT name, AsyncLockWithWaiterCount lockEntry, IDisposable lockHandle, AsyncLockQueueDictionary <KeyT> asyncLockQueueDictionary)
#endif
{
this.Name = name;
this.LockEntry = lockEntry;
#if !NOASYNC
this.LockHandle = lockHandle;
#endif
this.AsyncLockQueueDictionary = asyncLockQueueDictionary;
}
public async Task <LockDictReleaser> LockAsync(KeyT name, CancellationToken cancellationToken = default(CancellationToken))
{
AsyncLockWithWaiterCount lockEntry;
#pragma warning disable PH_S023 //Message PH_S023 Using the blocking synchronization mechanics of a monitor inside an async method is discouraged; use SemaphoreSlim instead.
lock (DictionaryAccessMutex)
#pragma warning restore PH_S023
//await DictionaryAccessMutex.WaitAsync(cancellationToken);
//try
{
if (!LockQueueDictionary.TryGetValue(name, out lockEntry))
{
lockEntry = new AsyncLockWithWaiterCount();
LockQueueDictionary.Add(name, lockEntry);
}
else
{
lockEntry.WaiterCount++; //NB! must be done inside the lock and BEFORE waiting for the lock
}
}
//finally
//{
// DictionaryAccessMutex.Release();
//}
#if NOASYNC
#pragma warning disable PH_P006 //warning PH_P006 Favor the use of the lock-statement instead of the use of Monitor.Enter when no timeouts are needed.
Monitor.Enter(lockEntry.LockEntry);
#pragma warning restore PH_P006
return(new LockDictReleaser(name, lockEntry, this));
#else
var lockHandle = await lockEntry.LockEntry.LockAsync(cancellationToken);
return(new LockDictReleaser(name, lockEntry, lockHandle, this));
#endif
}
private void ReleaseLock(KeyT name, AsyncLockWithWaiterCount lockEntry)
internal LockDictReleaser(KeyT name, AsyncLockWithWaiterCount lockEntry, AsyncLockQueueDictionary <KeyT> asyncLockQueueDictionary)
