Observable.Timer()会导致内存泄漏吗? [英] Can Observable.Timer() lead to memory leaks?

问题描述

最近，我在代码中发现了一个使用Reactive Extensions的小错误.我正在订阅Timer，但从未取消我的订阅.这导致内存泄漏.

Recently I noticed a small bug in my code which uses Reactive Extensions. I was subscribing to Timer but I never disposed my subscription. This resulted in a memory leak.

我创建了摘录，突出了这种危险:

I created snippet which highlights this danger:

while (true)
{
    Observable.Timer(TimeSpan.Zero, TimeSpan.FromMinutes(1)).Subscribe(Console.WriteLine);
}

这是正常行为吗?

当订阅者与应用程序的其余部分失去连接时，调度程序不应该对计时器保持弱引用以使其被垃圾回收吗?

Shouldn't scheduler hold weak reference to timer to get it garbage collected when subscribers lost connection with the rest of the app?

推荐答案

这是正常现象，并且是功能.

This is normal, and is a feature.

Subscribe()的语义将永远被监听，或者直到Disposed()或OnCompleted()或OnError()成为最先出现.

The semantics for Subscribe() are listen forever, or until Disposed() or OnCompleted(), or OnError(), which ever comes first.

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