Oni2/OniSplit/Parallel.cs

using System;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;

namespace Oni
{
    internal static class Parallel
    {
        public static void ForEach<T>(IEnumerable<T> items, Action<T> action)
        {
            var array = items.ToArray();

            if (array.Length == 0)
            {
                return;
            }

            if (array.Length == 1)
            {
                action(array[0]);
                return;
            }

            int cpuCount = Environment.ProcessorCount;

            if (cpuCount == 1)
            {
                foreach (T item in array)
                    action(item);

                return;
            }

#if NETCORE
            var task = Task.Run(() =>
            {
                for (int i = array.Length / 2; i < array.Length; i++)
                    action(array[i]);
            });
#else
            var thread = new Thread(() =>
            {
                for (int i = array.Length / 2; i < array.Length; i++)
                    action(array[i]);
            });

            thread.Start();
#endif

            for (int i = 0; i < array.Length / 2; i++)
                action(array[i]);

#if NETCORE
            task.Wait();
#else
            thread.Join();
#endif
        }
    }
}
Revision:	1114
Committed:	Wed Jan 22 14:08:57 2020 UTC (5 years, 8 months ago) by iritscen
File size:	1377 byte(s)
Log Message:	Adding OniSplit source code (v0.9.99.0). Many thanks to Neo for all his work over the years.
#	Content
1	using System;
2	using System.Collections.Generic;
3	using System.Threading;
4	using System.Threading.Tasks;
5
6	namespace Oni
7	{
8	internal static class Parallel
9	{
10	public static void ForEach<T>(IEnumerable<T> items, Action<T> action)
11	{
12	var array = items.ToArray();
13
14	if (array.Length == 0)
15	{
16	return;
17	}
18
19	if (array.Length == 1)
20	{
21	action(array[0]);
22	return;
23	}
24
25	int cpuCount = Environment.ProcessorCount;
26
27	if (cpuCount == 1)
28	{
29	foreach (T item in array)
30	action(item);
31
32	return;
33	}
34
35	#if NETCORE
36	var task = Task.Run(() =>
37	{
38	for (int i = array.Length / 2; i < array.Length; i++)
39	action(array[i]);
40	});
41	#else
42	var thread = new Thread(() =>
43	{
44	for (int i = array.Length / 2; i < array.Length; i++)
45	action(array[i]);
46	});
47
48	thread.Start();
49	#endif
50
51	for (int i = 0; i < array.Length / 2; i++)
52	action(array[i]);
53
54	#if NETCORE
55	task.Wait();
56	#else
57	thread.Join();
58	#endif
59	}
60	}
61	}