待机模式下的计时器会发生什么? [英] What happens to timer in standby mode?

问题描述

我正在使用 Timers 命名空间中的 Timer.当 PC 进入睡眠或休眠状态时，计时器会发生什么变化?

I'm using Timer from Timers namespace. What happens to timer when PC goes to sleep or hibernates?

我已将计时器设置为延迟 6 小时.

I have timer set to 6 hours delay.

在这些情况下会发生什么.

What will happen in those situations.

1) 计时器从 0 小时开始并立即进入睡眠/休眠状态.然后 PC 在第 5 小时唤醒.我的计时器会在接下来的 1 小时或接下来的 6 小时后触发吗?

1) Timer starts at hour 0 and goes to sleep/hibernation immediately. Then PC wakes at hour 5. Will my timer fire after next 1 hour or after next 6 hours?

2) 计时器从 0 小时开始并立即进入睡眠/休眠状态.然后 PC 在 7 小时唤醒.我的计时器会在 PC 唤醒后立即触发还是会错过"那一次并在接下来的 5 小时内触发?它会从 PC 唤醒时还是从上一个错过"事件开始计数到下一个事件?

2) Timer starts at hour 0 and goes to sleep/hibernation immediately. Then PC wakes at hour 7. Will my timer fire as soon as PC wakes or will it "miss" that one time and fire in next 5 hours? Will it start counting till next event from time of PC waking or from previous "missed" event?

推荐答案

好的.我问了我的朋友，这是他的结果:

Ok. I asked my friend and this are his results:

23:21:32 : Timer started
23:21:35 : PC Goes Sleep
23:22:50 : PC Wakes
23:22:50 : Timer fired
23:23:50 : Timer fired

using System;
using System.Collections.Generic;
using System.Text;
using System.Threading;

namespace Test
{
    class Program
    {
        static System.Timers.Timer timer;

        static void Main(string[] args)
        {
            timer = new System.Timers.Timer();
            timer.Interval = 60 * 1000;
            timer.AutoReset = true;
            timer.Elapsed += timer_Elapsed;
            timer.Enabled = true;

            Console.WriteLine(String.Format("{0}:{1}:{2} : Timer started", DateTime.Now.ToLocalTime().Hour, DateTime.Now.ToLocalTime().Minute, DateTime.Now.ToLocalTime().Second));

            timer.Start();

            Thread.Sleep(Timeout.Infinite);
        }

        static void timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
        {
            Console.WriteLine(String.Format("{0}:{1}:{2} : Timer fired", DateTime.Now.ToLocalTime().Hour, DateTime.Now.ToLocalTime().Minute, DateTime.Now.ToLocalTime().Second));
        }
    }
}

简而言之.在睡眠和唤醒定时器后检查它是否错过了任何事件.如果它错过了一个，它将从 0 开始计数到下一个事件.

So in short. After sleeping and waking timer checks if it has missed any event. If it missed one it will fire start counting till next event from 0.

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