| | | 1 | | using CounterpointCollective.Threading; |
| | | 2 | | using System.Diagnostics.CodeAnalysis; |
| | | 3 | | using System.Threading.Tasks.Dataflow; |
| | | 4 | | |
| | | 5 | | namespace CounterpointCollective.Dataflow.Internal |
| | | 6 | | { |
| | | 7 | | /// <exclude/> |
| | | 8 | | public delegate bool TryDequeuePostponedMessage<B, T>([MaybeNullWhen(false)] out PostponedMessage<B, T> postponedMes |
| | | 9 | | where B : ITargetBlock<T>; |
| | | 10 | | |
| | | 11 | | internal class PostponedMessagesManager<B, T> where B : ITargetBlock<T> |
| | | 12 | | { |
| | 76 | 13 | | private Task PostponedMessagesLoop { get; } |
| | | 14 | | |
| | | 15 | | public PostponedMessagesManager( |
| | | 16 | | PostponedMessages<B, T> postponedMessages, |
| | | 17 | | Func<bool> allowToRun, |
| | | 18 | | Action? postAction = null |
| | | 19 | | ) : |
| | 0 | 20 | | this |
| | 0 | 21 | | ( |
| | 0 | 22 | | (out PostponedMessage<B, T> postponedMessage) => |
| | 0 | 23 | | { |
| | 0 | 24 | | if (allowToRun()) |
| | 0 | 25 | | { |
| | 0 | 26 | | return postponedMessages.TryDequeuePostponed(out postponedMessage); |
| | 0 | 27 | | } |
| | 0 | 28 | | else |
| | 0 | 29 | | { |
| | 0 | 30 | | postponedMessage = default; |
| | 0 | 31 | | return false; |
| | 0 | 32 | | } |
| | 0 | 33 | | }, |
| | 0 | 34 | | postAction |
| | 0 | 35 | | ) |
| | | 36 | | { |
| | 0 | 37 | | } |
| | | 38 | | |
| | 113 | 39 | | public PostponedMessagesManager( |
| | 113 | 40 | | TryDequeuePostponedMessage<B, T> tryDequeuePostponedMessage, |
| | 113 | 41 | | Action? postAction = null |
| | 113 | 42 | | ) |
| | | 43 | | { |
| | 113 | 44 | | _tryDequeuePostponedMessage = tryDequeuePostponedMessage; |
| | 113 | 45 | | _postAction = postAction; |
| | 113 | 46 | | Consume = (in PostponedMessage<B, T> p) => { }; |
| | 226 | 47 | | PostponedMessagesLoop = Task.Run(() => Handle()); |
| | 113 | 48 | | } |
| | | 49 | | |
| | | 50 | | private readonly TryDequeuePostponedMessage<B, T> _tryDequeuePostponedMessage; |
| | | 51 | | |
| | | 52 | | public delegate void Consumer(in PostponedMessage<B, T> value); |
| | | 53 | | |
| | 102497 | 54 | | public Consumer Consume { get; set; } |
| | | 55 | | private readonly Action? _postAction; |
| | | 56 | | |
| | 113 | 57 | | private readonly AsyncAutoResetEventSlim _sem = new(false); |
| | 1445278 | 58 | | public object IncomingLock { get; } = new(); |
| | | 59 | | |
| | 1445154 | 60 | | public bool IsRunningPostponedMessages { get; private set; } |
| | | 61 | | |
| | 315756 | 62 | | public void ProcessPostponedMessages() => _sem.Set(); |
| | | 63 | | |
| | | 64 | | public async Task ShutdownAsync() |
| | | 65 | | { |
| | 76 | 66 | | _sem.Terminate(); |
| | 76 | 67 | | await PostponedMessagesLoop; |
| | 76 | 68 | | } |
| | | 69 | | |
| | | 70 | | private async Task Handle() |
| | | 71 | | { |
| | | 72 | | |
| | | 73 | | while (true) |
| | | 74 | | { |
| | | 75 | | try |
| | | 76 | | { |
| | 112747 | 77 | | await _sem.WaitOneAsync(); |
| | 112710 | 78 | | } catch (ObjectDisposedException) |
| | | 79 | | { |
| | 76 | 80 | | break; |
| | | 81 | | } |
| | | 82 | | |
| | 214905 | 83 | | while (!_sem.Terminated && TryDequeue(out var postponedMessage)) |
| | | 84 | | { |
| | 102271 | 85 | | Consume(in postponedMessage!); |
| | 102271 | 86 | | } |
| | | 87 | | } |
| | | 88 | | |
| | | 89 | | bool TryDequeue(out PostponedMessage<B, T> postponedMessage) |
| | | 90 | | { |
| | 214905 | 91 | | lock (IncomingLock) |
| | | 92 | | { |
| | 214905 | 93 | | if (_tryDequeuePostponedMessage(out postponedMessage)) |
| | | 94 | | { |
| | 102271 | 95 | | IsRunningPostponedMessages = true; |
| | 102271 | 96 | | return true; |
| | | 97 | | } else |
| | | 98 | | { |
| | 112634 | 99 | | if (IsRunningPostponedMessages) |
| | | 100 | | { |
| | 102271 | 101 | | IsRunningPostponedMessages = false; |
| | 102271 | 102 | | _postAction?.Invoke(); |
| | | 103 | | } |
| | 112634 | 104 | | postponedMessage = default; |
| | 112634 | 105 | | return false; |
| | | 106 | | } |
| | | 107 | | } |
| | 214905 | 108 | | } |
| | 76 | 109 | | } |
| | | 110 | | } |
| | | 111 | | } |