首页 > 代码库 > 多线程+缓存计算
多线程+缓存计算
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 | using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Management; using System.Threading.Tasks; namespace TaskTool { using System.Collections; using System.Collections.Concurrent; using System.Diagnostics; using System.Threading; class Program { private int TotalNum; private const int MAXDICNUM = 40000000; private static void Main( string [] args) { var stopWath = new Stopwatch(); var allCells= new List<Point>(); var cash = new ConcurrentDictionary<DisCashPair, short >(); InitialCells(allCells); stopWath.Start(); Cal(allCells, cash, 0, allCells.Count); stopWath.Stop(); Console.WriteLine( string .Format( "Single CPU {0},Cash num{1}" , stopWath.ElapsedMilliseconds, cash.Count)); cash.Clear(); stopWath.Reset(); stopWath.Start(); var cts = new CancellationTokenSource(); var tf = new TaskFactory(cts.Token, TaskCreationOptions.AttachedToParent, TaskContinuationOptions.ExecuteSynchronously, TaskScheduler.Default); var blockNum = ( int )Math.Ceiling(allCells.Count*1.0/CPUTool.GetCpuNum()); var calTasks = new Task[CPUTool.GetCpuNum()]; for ( int i = 0; i < CPUTool.GetCpuNum(); i++) { var startNum = i * blockNum; var endNum = (i + 1) * blockNum; if (endNum >= allCells.Count) { endNum = allCells.Count - 1; } calTasks[i] = Task.Factory.StartNew(() => Cal(allCells,cash, startNum, endNum)); } var endTask = tf.ContinueWhenAll(calTasks, (tasks) =>{}); endTask.Wait(cts.Token); //Task.WaitAll(calTasks.ToArray()); stopWath.Stop(); Console.WriteLine( string .Format( "Single CPU {0},Cash num{1}" , stopWath.ElapsedMilliseconds, cash.Count)); //Console.WriteLine(string.Format("Single CPU {0},Cash num{1}", stopWath.ElapsedMilliseconds, cash.Count)); } //private static Dictionary<DisCashPair, short> Finish(Task<Dictionary<DisCashPair, short>>[] tasks) //{ // IEnumerable<KeyValuePair<DisCashPair, short>> result = new Dictionary<DisCashPair, short>(); // result = tasks.Select(t => t.Result).Aggregate(result, (current, dic) => current.Union(dic)); // return result.ToDictionary(r => r.Key, r => r.Value); //} private static ConcurrentDictionary<DisCashPair, short > Cal(List<Point> allCells, int start, int end) { var cash = new ConcurrentDictionary<DisCashPair, short >(); for ( int i = start; i < end; i++) { var cell = allCells[i]; CalDis(cell, allCells, cash); } return cash; } private static void Cal(List<Point> allCells, ConcurrentDictionary<DisCashPair, short > cash, int start, int end) { for ( int i = start; i < end; i++) { var cell = allCells[i]; CalDis(cell, allCells, cash); } } private static void CalDis(Point cell, List<Point> allCells, ConcurrentDictionary<DisCashPair, short > cash) { foreach ( var desCell in allCells) { short dis; if (cash.TryGetValue( new DisCashPair(cell, desCell), out dis)) { continue ; } else { cash[ new DisCashPair(cell, desCell)] = GetDis(cell,desCell); } } } private static short GetDis(Point cell, Point desCell) { var difX = (cell.X - desCell.X); var difY = (cell.Y - desCell.Y); var dis = Math.Sqrt(difX*difX + difY*difY); return ( short ) (Math.Round(dis, 2)*100); } private static void InitialCells(List<Point> allCells) { var rd = new Random(); for ( int i = 0; i < 5000; i++) { allCells.Add( new Point() { ID=i, X = rd.NextDouble(), Y = rd.NextDouble() }); } } } public class DisCashPair { public Point Src; public Point Des; public DisCashPair(Point src,Point des) { Src = http://www.mamicode.com/src; Des = des; } public override int GetHashCode() { return (Src.ID*397) ^ (Des.ID*397); } public override bool Equals( object obj) { if (ReferenceEquals(obj, null )) return false ; if (obj.GetType() != typeof (DisCashPair)) return false ; return Equals((DisCashPair) obj); } private bool Equals(DisCashPair pair) { return (pair.Src.ID == this .Src.ID && pair.Des.ID == this .Des.ID) || (pair.Src.ID == this .Des.ID && pair.Des.ID == this .Src.ID); } } public struct Point { public int ID; public double X; public double Y; } public static class CPUTool { private static int CPUNUM=Int32.MaxValue; private const string SEARCHSR = "Select * from Win32_Processor" ; private const string CORESNUM = "NumberOfCores" ; public static int GetCpuNum() { if (CPUNUM == Int32.MaxValue) { CPUNUM = new System.Management.ManagementObjectSearcher(SEARCHSR).Get() .Cast<ManagementBaseObject>() .Sum(item => int .Parse(item[CORESNUM].ToString())); } return CPUNUM; } } } |
using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Management;using System.Threading.Tasks;
namespace TaskTool{ using System.Collections; using System.Collections.Concurrent; using System.Diagnostics; using System.Threading;
class Program { private int TotalNum; private const int MAXDICNUM = 40000000;
private static void Main(string[] args) { var stopWath = new Stopwatch();
var allCells=new List<Point>(); var cash = new ConcurrentDictionary<DisCashPair, short>(); InitialCells(allCells);
stopWath.Start(); Cal(allCells, cash, 0, allCells.Count); stopWath.Stop(); Console.WriteLine(string.Format("Single CPU {0},Cash num{1}", stopWath.ElapsedMilliseconds, cash.Count));
cash.Clear(); stopWath.Reset(); stopWath.Start();
var cts = new CancellationTokenSource(); var tf = new TaskFactory(cts.Token, TaskCreationOptions.AttachedToParent, TaskContinuationOptions.ExecuteSynchronously, TaskScheduler.Default);
var blockNum = (int)Math.Ceiling(allCells.Count*1.0/CPUTool.GetCpuNum());
var calTasks = new Task[CPUTool.GetCpuNum()];
for (int i = 0; i < CPUTool.GetCpuNum(); i++) { var startNum = i * blockNum; var endNum = (i + 1) * blockNum; if (endNum >= allCells.Count) { endNum = allCells.Count - 1; }
calTasks[i] = Task.Factory.StartNew(() => Cal(allCells,cash, startNum, endNum)); }
var endTask = tf.ContinueWhenAll(calTasks, (tasks) =>{}); endTask.Wait(cts.Token); //Task.WaitAll(calTasks.ToArray());
stopWath.Stop(); Console.WriteLine(string.Format("Single CPU {0},Cash num{1}", stopWath.ElapsedMilliseconds, cash.Count)); //Console.WriteLine(string.Format("Single CPU {0},Cash num{1}", stopWath.ElapsedMilliseconds, cash.Count));
}
//private static Dictionary<DisCashPair, short> Finish(Task<Dictionary<DisCashPair, short>>[] tasks) //{ // IEnumerable<KeyValuePair<DisCashPair, short>> result = new Dictionary<DisCashPair, short>();
// result = tasks.Select(t => t.Result).Aggregate(result, (current, dic) => current.Union(dic));
// return result.ToDictionary(r => r.Key, r => r.Value); //}
private static ConcurrentDictionary<DisCashPair, short> Cal(List<Point> allCells, int start, int end) { var cash = new ConcurrentDictionary<DisCashPair, short>(); for (int i = start; i < end; i++) { var cell = allCells[i]; CalDis(cell, allCells, cash); } return cash; }
private static void Cal(List<Point> allCells, ConcurrentDictionary<DisCashPair, short> cash, int start, int end) { for (int i = start; i < end; i++) { var cell = allCells[i]; CalDis(cell, allCells, cash); } }
private static void CalDis(Point cell, List<Point> allCells, ConcurrentDictionary<DisCashPair, short> cash) { foreach (var desCell in allCells) { short dis; if (cash.TryGetValue(new DisCashPair(cell, desCell), out dis)) { continue; } else { cash[new DisCashPair(cell, desCell)] = GetDis(cell,desCell); } } }
private static short GetDis(Point cell, Point desCell) { var difX = (cell.X - desCell.X); var difY = (cell.Y - desCell.Y); var dis = Math.Sqrt(difX*difX + difY*difY);
return (short) (Math.Round(dis, 2)*100); }
private static void InitialCells(List<Point> allCells) { var rd = new Random();
for (int i = 0; i < 5000; i++) { allCells.Add(new Point() { ID=i, X = rd.NextDouble(), Y = rd.NextDouble() }); } } }
public class DisCashPair { public Point Src; public Point Des;
public DisCashPair(Point src,Point des) { Src = http://www.mamicode.com/src; Des = des; > public override int GetHashCode() { return (Src.ID*397) ^ (Des.ID*397); }
public override bool Equals(object obj) { if (ReferenceEquals(obj, null)) return false; if (obj.GetType() != typeof (DisCashPair)) return false; return Equals((DisCashPair) obj); }
private bool Equals(DisCashPair pair) { return (pair.Src.ID == this.Src.ID && pair.Des.ID == this.Des.ID) || (pair.Src.ID == this.Des.ID && pair.Des.ID == this.Src.ID); } }
public struct Point { public int ID; public double X; public double Y; }
public static class CPUTool { private static int CPUNUM=Int32.MaxValue;
private const string SEARCHSR = "Select * from Win32_Processor"; private const string CORESNUM = "NumberOfCores";
public static int GetCpuNum() { if (CPUNUM == Int32.MaxValue) { CPUNUM = new System.Management.ManagementObjectSearcher(SEARCHSR).Get() .Cast<ManagementBaseObject>() .Sum(item => int.Parse(item[CORESNUM].ToString())); }
return CPUNUM; }
}}