/// <summary>
/// Tries to enqueue the given async write and callback
/// </summary>
/// <param name="w"></param>
/// <param name="writerDelegate"></param>
/// <returns></returns>
public AsyncQueueResult Queue(AsyncWrite w, Func <AsyncWrite, Task> writerDelegate)
{
lock (sync)
{
if (queuedBytes < 0)
{
throw new InvalidOperationException();
}
if (queuedBytes + w.GetEntrySizeInMemory() > MaxQueueBytes)
{
return(AsyncQueueResult.QueueFull); //Because we would use too much ram.
}
if (c.ContainsKey(w.Key))
{
return(AsyncQueueResult.AlreadyPresent); //We already have a queued write for this data.
}
c.Add(w.Key, w);
queuedBytes += w.GetEntrySizeInMemory();
w.RunningTask = Task.Run(
async() => {
try
{
await writerDelegate(w);
}
finally
{
Remove(w);
}
});
return(AsyncQueueResult.Enqueued);
}
}
/// <summary>
/// Removes the specified object based on its relativePath and modifiedDateUtc values.
/// </summary>
/// <param name="w"></param>
private void Remove(AsyncWrite w)
{
lock (sync)
{
c.Remove(w.Key);
queuedBytes -= w.GetEntrySizeInMemory();
}
}
