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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,190 @@ | ||
| // File name: PooledObjectBuffer.cs | ||
| // | ||
| // Author(s): Alessio Parma <alessio.parma@gmail.com> | ||
| // | ||
| // The MIT License (MIT) | ||
| // | ||
| // Copyright (c) 2013-2018 Alessio Parma <alessio.parma@gmail.com> | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy of this software and | ||
| // associated documentation files (the "Software"), to deal in the Software without restriction, | ||
| // including without limitation the rights to use, copy, modify, merge, publish, distribute, | ||
| // sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is | ||
| // furnished to do so, subject to the following conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in all copies or | ||
| // substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT | ||
| // NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | ||
| // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, | ||
| // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT | ||
| // OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | ||
|
|
||
| using System; | ||
| using System.Collections; | ||
| using System.Collections.Generic; | ||
| using System.Runtime.CompilerServices; | ||
| using System.Threading; | ||
|
|
||
| namespace CodeProject.ObjectPool.Core | ||
| { | ||
| /// <summary> | ||
| /// A buffer into which pooled objects are stored. This buffer mostly behaves like a queue, | ||
| /// even if that behaviour is not stricly respected in order to maximize performance. | ||
| /// </summary> | ||
| /// <typeparam name="T"> | ||
| /// The type of the object that which will be managed by the pool. The pooled object have to be | ||
| /// a sub-class of PooledObject. | ||
| /// </typeparam> | ||
| public sealed class PooledObjectBuffer<T> : IEnumerable<T> | ||
| where T : PooledObject | ||
| { | ||
| #if (NET35 || NET40) | ||
| private const MethodImplOptions TryToInline = default(MethodImplOptions); | ||
| #else | ||
| private const MethodImplOptions TryToInline = MethodImplOptions.AggressiveInlining; | ||
| #endif | ||
|
|
||
| /// <summary> | ||
| /// Used as default value for <see cref="_pooledObjects"/>. | ||
| /// </summary> | ||
| private static readonly T[] NoObjects = new T[0]; | ||
|
|
||
| /// <summary> | ||
| /// The concurrent buffer containing pooled objects. | ||
| /// </summary> | ||
| private T[] _pooledObjects = NoObjects; | ||
|
|
||
| /// <summary> | ||
| /// The maximum capacity of this buffer. | ||
| /// </summary> | ||
| public int Capacity => _pooledObjects.Length; | ||
|
|
||
| /// <summary> | ||
| /// The number of objects stored in this buffer. | ||
| /// </summary> | ||
| public int Count | ||
| { | ||
| get | ||
| { | ||
| var count = 0; | ||
| for (var i = 0; i < _pooledObjects.Length; ++i) | ||
| { | ||
| if (_pooledObjects[i] != null) count++; | ||
| } | ||
| return count; | ||
| } | ||
| } | ||
|
|
||
| /// <summary> | ||
| /// Returns an enumerator that iterates through the collection. | ||
| /// </summary> | ||
| /// <returns>An enumerator that can be used to iterate through the collection.</returns> | ||
| public IEnumerator<T> GetEnumerator() | ||
| { | ||
| for (var i = 0; i <= _pooledObjects.Length; ++i) | ||
| { | ||
| var item = _pooledObjects[i]; | ||
| if (item != null) | ||
| { | ||
| yield return item; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| /// <summary> | ||
| /// Returns an enumerator that iterates through a collection. | ||
| /// </summary> | ||
| /// <returns> | ||
| /// An <see cref="IEnumerator"/> object that can be used to iterate through the collection. | ||
| /// </returns> | ||
| IEnumerator IEnumerable.GetEnumerator() => GetEnumerator(); | ||
|
|
||
| /// <summary> | ||
| /// Tries to dequeue an object from the buffer. | ||
| /// </summary> | ||
| /// <param name="pooledObject">Output pooled object.</param> | ||
| /// <returns>True if <paramref name="pooledObject"/> has a value, false otherwise.</returns> | ||
| [MethodImpl(TryToInline)] | ||
| public bool TryDequeue(out T pooledObject) | ||
| { | ||
| for (var i = 0; i < _pooledObjects.Length; i++) | ||
| { | ||
| var item = _pooledObjects[i]; | ||
| if (item != null && Interlocked.CompareExchange(ref _pooledObjects[i], null, item) == item) | ||
| { | ||
| pooledObject = item; | ||
| return true; | ||
| } | ||
| } | ||
| pooledObject = null; | ||
| return false; | ||
| } | ||
|
|
||
| /// <summary> | ||
| /// Tries to enqueue given object into the buffer. | ||
| /// </summary> | ||
| /// <param name="pooledObject">Input pooled object.</param> | ||
| /// <returns>True if there was enough space to enqueue given object, false otherwise.</returns> | ||
| [MethodImpl(TryToInline)] | ||
| public bool TryEnqueue(T pooledObject) | ||
| { | ||
| for (var i = 0; i < _pooledObjects.Length; i++) | ||
| { | ||
| ref var item = ref _pooledObjects[i]; | ||
| if (item == null && Interlocked.CompareExchange(ref item, pooledObject, null) == null) | ||
| { | ||
| return true; | ||
| } | ||
| } | ||
| return false; | ||
| } | ||
|
|
||
| /// <summary> | ||
| /// Resizes the buffer so that it fits to given capacity. If new capacity is smaller than | ||
| /// current capacity, then exceeding items are returned. | ||
| /// </summary> | ||
| /// <param name="newCapacity">The new capacity of this buffer.</param> | ||
| /// <returns>All exceeding items.</returns> | ||
| public IList<T> Resize(int newCapacity) | ||
| { | ||
| if (_pooledObjects == NoObjects) | ||
| { | ||
| _pooledObjects = new T[newCapacity]; | ||
| return NoObjects; | ||
| } | ||
|
|
||
| var currentCapacity = _pooledObjects.Length; | ||
| if (currentCapacity == newCapacity) | ||
| { | ||
| // Nothing to do. | ||
| return NoObjects; | ||
| } | ||
|
|
||
| IList<T> exceedingItems = NoObjects; | ||
| if (currentCapacity > newCapacity) | ||
| { | ||
| for (var i = newCapacity; i < currentCapacity; ++i) | ||
| { | ||
| ref var item = ref _pooledObjects[i]; | ||
| if (item != null) | ||
| { | ||
| if (exceedingItems == NoObjects) | ||
| { | ||
| exceedingItems = new List<T> { item }; | ||
| } | ||
| else | ||
| { | ||
| exceedingItems.Add(item); | ||
| } | ||
| item = null; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| Array.Resize(ref _pooledObjects, newCapacity); | ||
| return exceedingItems; | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,42 @@ | ||
| // File name: ITimedObjectPool.cs | ||
| // | ||
| // Author(s): Alessio Parma <alessio.parma@gmail.com> | ||
| // | ||
| // The MIT License (MIT) | ||
| // | ||
| // Copyright (c) 2013-2018 Alessio Parma <alessio.parma@gmail.com> | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy of this software and | ||
| // associated documentation files (the "Software"), to deal in the Software without restriction, | ||
| // including without limitation the rights to use, copy, modify, merge, publish, distribute, | ||
| // sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is | ||
| // furnished to do so, subject to the following conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in all copies or | ||
| // substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT | ||
| // NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | ||
| // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, | ||
| // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT | ||
| // OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | ||
|
|
||
| namespace CodeProject.ObjectPool | ||
| { | ||
| /// <summary> | ||
| /// A pool where objects are automatically removed after a period of inactivity. | ||
| /// </summary> | ||
| /// <typeparam name="T"> | ||
| /// The type of the object that which will be managed by the pool. The pooled object have to be | ||
| /// a sub-class of PooledObject. | ||
| /// </typeparam> | ||
| #if NET35 | ||
| public interface ITimedObjectPool<T> : IObjectPool<T> | ||
| #else | ||
|
|
||
| public interface ITimedObjectPool<out T> : IObjectPool<T> | ||
| #endif | ||
| where T : PooledObject | ||
| { | ||
| } | ||
| } |
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