| | | 1 | | using CounterpointCollective.Collections; |
| | | 2 | | using System.Diagnostics.CodeAnalysis; |
| | | 3 | | using System.Threading.Tasks.Dataflow; |
| | | 4 | | |
| | | 5 | | namespace CounterpointCollective.Dataflow.Internal |
| | | 6 | | { |
| | | 7 | | /// <exclude/> |
| | | 8 | | public readonly record struct PostponedMessage<B, T> : System.IEquatable<PostponedMessage<B, T>> where B : ITargetBl |
| | | 9 | | { |
| | | 10 | | public ISourceBlock<T> SourceBlock { get; } |
| | | 11 | | public B Target { get; } |
| | | 12 | | public DataflowMessageHeader MessageHeader { get; } |
| | | 13 | | |
| | | 14 | | public PostponedMessage(ISourceBlock<T> sourceBlock, B target, DataflowMessageHeader messageHeader) |
| | | 15 | | { |
| | | 16 | | SourceBlock = sourceBlock; |
| | | 17 | | Target = target; |
| | | 18 | | MessageHeader = messageHeader; |
| | | 19 | | } |
| | | 20 | | |
| | | 21 | | public bool Consume([MaybeNullWhen(false)] out T messageValue) |
| | | 22 | | { |
| | | 23 | | var v = SourceBlock.ConsumeMessage(MessageHeader, Target, out var messageConsumed); |
| | | 24 | | if (messageConsumed) |
| | | 25 | | { |
| | | 26 | | messageValue = v!; |
| | | 27 | | return true; |
| | | 28 | | } |
| | | 29 | | else |
| | | 30 | | { |
| | | 31 | | messageValue = default; |
| | | 32 | | return false; |
| | | 33 | | } |
| | | 34 | | } |
| | | 35 | | |
| | | 36 | | public bool Reserve() => SourceBlock.ReserveMessage(MessageHeader, Target); |
| | | 37 | | public void ReleaseReservation() => SourceBlock.ReleaseReservation(MessageHeader, Target); |
| | | 38 | | } |
| | | 39 | | |
| | | 40 | | /// <exclude /> |
| | 118 | 41 | | public class PostponedMessages<B, T>(B owner) |
| | | 42 | | where B : ITargetBlock<T> |
| | | 43 | | { |
| | 118 | 44 | | private readonly UniquePriorityQueue<ISourceBlock<T>, DataflowMessageHeader, long> _priorityQueue = new(); |
| | | 45 | | private long i; |
| | | 46 | | |
| | 214905 | 47 | | public int Count => _priorityQueue.Count; |
| | | 48 | | |
| | | 49 | | public long Postpone(ISourceBlock<T> s, DataflowMessageHeader h) |
| | | 50 | | { |
| | 102280 | 51 | | _priorityQueue.Enqueue(s, h, ++i); |
| | 102280 | 52 | | return i; |
| | | 53 | | } |
| | | 54 | | |
| | 0 | 55 | | public long Increment => ++i; |
| | | 56 | | |
| | 0 | 57 | | public bool Unregister(ISourceBlock<T> s) => _priorityQueue.Remove(s, out var _, out var _); |
| | | 58 | | |
| | | 59 | | public bool Unregister(ISourceBlock<T> s, DataflowMessageHeader h) |
| | | 60 | | { |
| | 0 | 61 | | if (_priorityQueue.TryGet(s, out var current, out var p) && current == h) |
| | | 62 | | { |
| | 0 | 63 | | return Unregister(s); |
| | | 64 | | } else |
| | | 65 | | { |
| | 0 | 66 | | return false; |
| | | 67 | | } |
| | | 68 | | } |
| | | 69 | | |
| | 214905 | 70 | | public bool IsEmpty => Count == 0; |
| | | 71 | | |
| | | 72 | | public bool TryPeekPostponed([MaybeNullWhen(false)] out PostponedMessage<B, T> postponedMessage) |
| | | 73 | | { |
| | 0 | 74 | | if (_priorityQueue.TryPeek(out var s, out var h, out var _)) |
| | | 75 | | { |
| | 0 | 76 | | postponedMessage = new PostponedMessage<B, T>(s, owner, h); |
| | 0 | 77 | | return true; |
| | | 78 | | } |
| | 0 | 79 | | postponedMessage = default; |
| | 0 | 80 | | return false; |
| | | 81 | | } |
| | | 82 | | |
| | | 83 | | public bool TryDequeuePostponed(out PostponedMessage<B, T> postponedMessage) |
| | | 84 | | { |
| | 102275 | 85 | | if (_priorityQueue.TryDequeue(out var s, out var h, out var _)) |
| | | 86 | | { |
| | 102273 | 87 | | postponedMessage = new PostponedMessage<B, T>(s, owner, h); |
| | 102273 | 88 | | return true; |
| | | 89 | | } |
| | 2 | 90 | | postponedMessage = default; |
| | 2 | 91 | | return false; |
| | | 92 | | } |
| | | 93 | | |
| | | 94 | | public bool TryPeekPostponedFor(ISourceBlock<T> t, [MaybeNullWhen(false)] out PostponedMessage<B, T> postponedMe |
| | | 95 | | { |
| | 0 | 96 | | if (_priorityQueue.TryGet(t, out var h, out var _)) |
| | | 97 | | { |
| | 0 | 98 | | postponedMessage = new PostponedMessage<B, T>(t, owner, h); |
| | 0 | 99 | | return true; |
| | | 100 | | } else |
| | | 101 | | { |
| | 0 | 102 | | postponedMessage = default; |
| | 0 | 103 | | return false; |
| | | 104 | | } |
| | | 105 | | } |
| | | 106 | | |
| | 3 | 107 | | public void Clear() => _priorityQueue.Clear(); |
| | | 108 | | } |
| | | 109 | | } |