100 lines
3.2 KiB
C#
100 lines
3.2 KiB
C#
//-----------------------------------------------------------------------
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// -----------------------------------------------------------------------
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// file="L4.Predict"
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// Project: StgSharp
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// AuthorGroup: Nitload
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// Copyright (c) Nitload. All rights reserved.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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//
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// -----------------------------------------------------------------------
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// -----------------------------------------------------------------------
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using StgSharp.Common.Collections;
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using StgSharp.Mathematics.Memory;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace StgSharp.HighPerformance.Memory
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{
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public partial class L4
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{
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private ConcurrentBufferStack<int> _idReuse = new(32);
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private ConcurrentFlexibleArray<IL4Predict> _predictions = new(32);
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private int _largestId = 0;
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private Queue<int> _predictionQueue = [];
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private IL4Predict CurrentPredict { get; set; }
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public int RegisterPredict(
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IL4Predict predict
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)
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{
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if (predict is null) {
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return -1;
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}
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if (!_idReuse.TryPop(out int id)) {
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id = _largestId++;
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}
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_predictions[id] = predict;
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_predictionQueue.Enqueue(id);
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return id;
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}
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public IL4Predict? UnregisterPredict(
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int id
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)
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{
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if (id < 0) {
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return null;
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}
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IL4Predict p = _predictions[id];
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if (p == null) {
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return p;
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}
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_predictions[id] = null!;
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// TODO: scan and write back
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_idReuse.Push(id);
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return p;
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}
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private void UseNewPredict()
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{
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if (_predictionQueue.Count == 0) {
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return;
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}
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if (_predictionQueue.TryDequeue(out int id))
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{
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IL4Predict predict = _predictions[id] ??
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throw new L4PredictUnregisteredException(id);
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CurrentPredict = predict;
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}
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}
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}
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}
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