41 lines
1007 B
C#
41 lines
1007 B
C#
using System;
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using System.Collections.Generic;
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namespace Engine.Core;
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public class ListPool<T> : IPool<List<T>>
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{
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public Event<IPool<List<T>>, List<T>> OnReturned { get; } = new();
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public Event<IPool<List<T>>, List<T>> OnRemoved { get; } = new();
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private readonly Func<List<T>> generator = null!;
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private readonly Queue<List<T>> queue = new();
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public List<T> Get()
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{
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if (!queue.TryDequeue(out List<T>? result))
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result = generator();
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result.Clear();
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OnRemoved?.Invoke(this, result);
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return result;
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}
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public void Return(List<T> list)
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{
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if (queue.Contains(list))
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return;
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list.Clear();
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queue.Enqueue(list);
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OnReturned?.Invoke(this, list);
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}
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public ListPool(int initialListCount = 1, int initialListCapacity = 32)
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{
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generator = () => new(initialListCapacity);
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for (int i = 0; i < initialListCount; i++)
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queue.Enqueue(generator());
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}
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}
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