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using Implab.Diagnostics;
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using System;
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using System.Threading;
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namespace Implab.Parallels {
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/// <summary>
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/// Класс для распаралеливания задач.
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/// </summary>
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/// <remarks>
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/// Используя данный класс и лямда выражения можно распараллелить
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/// вычисления, для этого используется концепция обещаний.
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/// </remarks>
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public static class AsyncPool {
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public static IPromise<T> Invoke<T>(Func<T> func) {
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var p = new Promise<T>();
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var caller = TraceContext.Snapshot();
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ThreadPool.QueueUserWorkItem(param => {
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TraceContext.Fork(caller);
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try {
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p.Resolve(func());
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} catch(Exception e) {
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p.Reject(e);
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}
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});
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return p;
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}
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public static IPromise<T> InvokeNewThread<T>(Func<T> func) {
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var p = new Promise<T>();
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var caller = TraceContext.Snapshot();
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var worker = new Thread(() => {
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TraceContext.Fork(caller);
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try {
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p.Resolve(func());
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} catch (Exception e) {
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p.Reject(e);
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}
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});
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worker.IsBackground = true;
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worker.Start();
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return p;
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}
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public static IPromise InvokeNewThread(Action func) {
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var p = new Promise<object>();
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var caller = TraceContext.Snapshot();
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var worker = new Thread(() => {
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TraceContext.Fork(caller);
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try {
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func();
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p.Resolve();
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} catch (Exception e) {
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p.Reject(e);
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}
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});
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worker.IsBackground = true;
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worker.Start();
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return p;
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}
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}
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}
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