2 // ParallelPartitioner.cs
5 // Jérémie "Garuma" Laval <jeremie.laval@gmail.com>
7 // Copyright (c) 2010 Jérémie "Garuma" Laval
9 // Permission is hereby granted, free of charge, to any person obtaining a copy
10 // of this software and associated documentation files (the "Software"), to deal
11 // in the Software without restriction, including without limitation the rights
12 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
13 // copies of the Software, and to permit persons to whom the Software is
14 // furnished to do so, subject to the following conditions:
16 // The above copyright notice and this permission notice shall be included in
17 // all copies or substantial portions of the Software.
19 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
22 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
30 using System.Collections.Generic;
31 using System.Collections.Concurrent;
32 using System.Collections.Concurrent.Partitioners;
34 namespace System.Linq.Parallel
36 internal static class ParallelPartitioner
38 internal static OrderablePartitioner<T> CreateForChunks<T> (IEnumerable<T> source)
40 return Partitioner.Create (source);
43 internal static OrderablePartitioner<T> CreateForRange<T> (IList<T> source)
45 return Partitioner.Create (source, true);
48 internal static OrderablePartitioner<T> CreateBest<T> (IEnumerable<T> source)
50 IList<T> temp = source as IList<T>;
52 return CreateForRange (temp);
54 return CreateForChunks (source);
57 internal static OrderablePartitioner<T> CreateForStrips<T> (IEnumerable<T> source, int stripSize)
59 IList<T> temp = source as IList<T>;
61 return new StripPartitioner<T> (temp);
63 return new EnumerablePartitioner<T> (source, stripSize, 1);
66 internal static OrderablePartitioner<int> CreateForRange (int start, int count)
68 return CreateForRange<int> (new RangeList (start, count));
71 internal static OrderablePartitioner<T> CreateForRepeat<T> (T obj, int count)
73 return CreateForRange<T> (new RepeatList<T> (obj, count));