using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading;
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using System.Threading.Tasks;
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namespace RichCreator
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{
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/// <summary>
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/// 函数调用帮助单元
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/// </summary>
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public class FuncUtils
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{
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/// <summary>
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/// 支持取消和超时的函数包装
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="val">原函数传出值</param>
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/// <param name="timeoutMillSecond">超时毫秒</param>
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/// <param name="cancelToken">取消Token</param>
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/// <param name="method">原函数</param>
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/// <param name="proidTime">每次尝试中间间隔毫秒数</param>
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/// <returns></returns>
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public static bool TimeoutCancelableWrap<T>(out T val, Int32 timeoutMillSecond, CancellationToken cancelToken, Func<TimeoutCancelCallResult<T>> method, Int32 proidTime = 1000)
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{
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val = default(T);
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DateTime expireTimeout = DateTime.Now.AddMilliseconds(timeoutMillSecond);
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TimeoutCancelCallResult<T> result;
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G.Instance.RemainTimeWriter(timeoutMillSecond / 1000);
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while (!cancelToken.IsCancellationRequested)
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{
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if (DateTime.Now > expireTimeout)
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{
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G.Instance.RemainTimeWriter(-1);
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return false;
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}
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result = method();
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if (result.Result)
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{
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G.Instance.RemainTimeWriter(-1);
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val = result.ReturnVal;
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return true;
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}
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Thread.Sleep(proidTime);
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G.Instance.RemainTimeWriter((Int32)(expireTimeout - DateTime.Now).TotalSeconds);
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}
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G.Instance.RemainTimeWriter(-1);
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return false;
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}
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/// <summary>
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/// 支持取消和超时的函数包装
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="val">原函数传出值</param>
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/// <param name="timeoutMillSecond">超时毫秒</param>
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/// <param name="cancelToken">取消Token</param>
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/// <param name="method">原函数</param>
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/// <param name="proidTime">每次尝试中间间隔毫秒数</param>
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/// <returns></returns>
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public static bool TimeoutCancelableWrap(Int32 timeoutMillSecond, CancellationToken cancelToken, Func<bool> method, Int32 proidTime = 1000)
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{
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bool result = false;
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DateTime expireTimeout = DateTime.Now.AddMilliseconds(timeoutMillSecond);
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G.Instance.RemainTimeWriter(timeoutMillSecond / 1000);
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while (!cancelToken.IsCancellationRequested)
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{
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if (DateTime.Now > expireTimeout)
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{
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G.Instance.RemainTimeWriter(-1);
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return false;
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}
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result = method();
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if (result)
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{
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G.Instance.RemainTimeWriter(-1);
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return true;
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}
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Thread.Sleep(proidTime);
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G.Instance.RemainTimeWriter((Int32)(expireTimeout-DateTime.Now).TotalSeconds);
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}
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G.Instance.RemainTimeWriter(-1);
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return false;
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}
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/// <summary>
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/// 没有变化重试的调用包装
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/// </summary>
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/// <param name="workFun">主要工作方法</param>
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/// <param name="workFinishedDectedFun">检测前面的工作方法是否按预定成功了的方法</param>
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/// <param name="workDectedTimeoutMs">检测方法超时毫秒数</param>
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/// <param name="preDectedFun">检测是否还处于之前没调用工作方法的阶段</param>
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/// <param name="tryCount">重试次数</param>
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/// <param name="cancellationToken">取消句柄</param>
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/// <returns></returns>
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public static bool NoChangeRetryCallWrap(Action workFun, Func<bool> workFinishedDectedFun, Func<bool> preDectedFun,Int32 tryCount=3)
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{
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Int32 tryCounter = 0;
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while (tryCounter<tryCount)
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{
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try
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{
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workFun();
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}
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catch
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{
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break;
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}
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bool result = false;
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try
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{
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result = workFinishedDectedFun();
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}
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catch
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{
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break;
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}
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if (result)
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{
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return true;
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}
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result = preDectedFun();
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if (result)
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{
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//没有变化，则重试
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tryCounter++;
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continue;
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}
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return false;
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}
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return false;
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}
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/// <summary>
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/// 超时取消回调返回值
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/// </summary>
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/// <typeparam name="T"></typeparam>
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public struct TimeoutCancelCallResult<T>
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{
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public TimeoutCancelCallResult(bool result, T returnVal)
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{
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this.Result = result;
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this.ReturnVal = returnVal;
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}
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public bool Result;
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public T ReturnVal;
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}
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}
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}
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