annotate Implab/Parallels/AsyncPool.cs @ 203:4d9830a9bbb8 v2

Added 'Fail' method to RunnableComponent which allows component to move from Running to Failed state. Added PollingComponent a timer based runnable component More tests Added FailPromise a thin class to wrap exceptions Fixed error handling in SuccessPromise classes.
author cin
date Tue, 18 Oct 2016 17:49:54 +0300
parents 706fccb85524
children
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1 using Implab.Diagnostics;
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2 using System;
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3 using System.Threading;
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4 using System.Linq;
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5
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6 namespace Implab.Parallels {
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7 /// <summary>
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8 /// Класс для распаралеливания задач.
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9 /// </summary>
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10 /// <remarks>
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11 /// Используя данный класс и лямда выражения можно распараллелить
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12 /// вычисления, для этого используется концепция обещаний.
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13 /// </remarks>
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14 public static class AsyncPool {
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15
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16 public static IPromise<T> Invoke<T>(Func<T> func) {
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17 var p = new Promise<T>();
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18 var caller = TraceContext.Instance.CurrentOperation;
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19
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20 ThreadPool.QueueUserWorkItem(param => {
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21 TraceContext.Instance.EnterLogicalOperation(caller,false);
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22 try {
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23 p.Resolve(func());
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24 } catch(Exception e) {
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25 p.Reject(e);
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26 } finally {
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27 TraceContext.Instance.Leave();
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28 }
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29 });
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30
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31 return p;
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32 }
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33
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34 public static IPromise<T> Invoke<T>(Func<ICancellationToken, T> func) {
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35 var p = new Promise<T>();
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36 var caller = TraceContext.Instance.CurrentOperation;
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37
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38 ThreadPool.QueueUserWorkItem(param => {
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39 TraceContext.Instance.EnterLogicalOperation(caller,false);
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40 try {
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41 p.Resolve(func(p));
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42 } catch(Exception e) {
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43 p.Reject(e);
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44 } finally {
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45 TraceContext.Instance.Leave();
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46 }
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47 });
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48
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49 return p;
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50 }
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51
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52 public static IPromise<T> RunThread<T>(Func<T> func) {
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53 var p = new Promise<T>();
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54
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55 var caller = TraceContext.Instance.CurrentOperation;
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56
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57 var worker = new Thread(() => {
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58 TraceContext.Instance.EnterLogicalOperation(caller,false);
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59 try {
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60 p.Resolve(func());
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61 } catch (Exception e) {
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62 p.Reject(e);
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63 } finally {
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64 TraceContext.Instance.Leave();
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65 }
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66 });
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67 worker.IsBackground = true;
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68 worker.Start();
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70 return p;
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71 }
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72
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73 public static IPromise<T> RunThread<T>(Func<ICancellationToken, T> func) {
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74 var p = new Promise<T>();
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75
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76 var caller = TraceContext.Instance.CurrentOperation;
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78 var worker = new Thread(() => {
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79 TraceContext.Instance.EnterLogicalOperation(caller,false);
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80 try {
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81 p.Resolve(func(p));
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82 } catch (Exception e) {
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83 p.Reject(e);
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84 } finally {
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85 TraceContext.Instance.Leave();
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86 }
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87 });
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88 worker.IsBackground = true;
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89 worker.Start();
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90
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91 return p;
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92 }
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93
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95 public static IPromise RunThread(Action func) {
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96 var p = new Promise();
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97
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98 var caller = TraceContext.Instance.CurrentOperation;
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99
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100 var worker = new Thread(() => {
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101 TraceContext.Instance.EnterLogicalOperation(caller,false);
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102 try {
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103 func();
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104 p.Resolve();
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105 } catch (Exception e) {
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106 p.Reject(e);
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107 } finally {
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108 TraceContext.Instance.Leave();
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109 }
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110 });
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111 worker.IsBackground = true;
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112 worker.Start();
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113
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114 return p;
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115 }
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116
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117 public static IPromise RunThread(Action<ICancellationToken> func) {
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118 var p = new Promise();
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119
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120 var caller = TraceContext.Instance.CurrentOperation;
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121
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122 var worker = new Thread(() => {
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123 TraceContext.Instance.EnterLogicalOperation(caller,false);
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124 try {
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125 func(p);
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126 p.Resolve();
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127 } catch (Exception e) {
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128 p.Reject(e);
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129 } finally {
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130 TraceContext.Instance.Leave();
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131 }
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132 });
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133 worker.IsBackground = true;
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134 worker.Start();
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135
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136 return p;
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137 }
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138
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139 public static IPromise[] RunThread(params Action[] func) {
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140 return func.Select(f => RunThread(f)).ToArray();
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141 }
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142
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143 public static IPromise[] RunThread(params Action<ICancellationToken>[] func) {
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144 return func.Select(f => RunThread(f)).ToArray();
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145 }
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146
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147 public static IPromise<T>[] RunThread<T>(params Func<T>[] func) {
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148 return func.Select(f => RunThread(f)).ToArray();
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149 }
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150
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151 public static IPromise<T>[] RunThread<T>(params Func<ICancellationToken, T>[] func) {
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152 return func.Select(f => RunThread(f)).ToArray();
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153 }
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154 }
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155 }