是什么使委托多目标对象保留在范围内？
是什么使 t 成为根引用（留在范围内）？ （t是一个用户定义的类）
我在IL间谍中查看，它不是一个常见的捕获变量！
Action runs = null;
while (dummy <= tod.Value.Date)
{
var t = new Task(dummy, _interval);
runs += t.Run;
dummy = dummy.AddDays(1);
}
GC.Collect();
((Action)(() => { runs(); })).BeginInvoke(Result, null);
有人可以向我解释一下吗？ t（任务）类如何保持在范围内，是什么让它扎根，我猜它是运行委托，但是如何呢？
What makes t a rooted reference (stay in scope) ? (t is a user defined class)
I look at in in IL spy, and its not a common capture variable !
Action runs = null;
while (dummy <= tod.Value.Date)
{
var t = new Task(dummy, _interval);
runs += t.Run;
dummy = dummy.AddDays(1);
}
GC.Collect();
((Action)(() => { runs(); })).BeginInvoke(Result, null);
Can someone explain this to me? How the t (task) classes stay in scope, what makes it rooted, I guess its the runs delegate, but how?
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首先，我应该指出，这与范围没有太大关系，范围是程序文本的区域，在该区域中可以使用实体的简单名称来引用实体。这是关于可达性。
现在我还没有使用内存分析器查看相关堆，但是Task对象的路径看起来像这样：Action（多播）委托实例是 GC 根，因为它由runs（本地）引用。_invocablelist字段保持其各个订阅者的活动状态，该字段保存对委托数组的引用。Action委托实例的引用。_target字段（它将充当传递给this的引用） code>Task.Run 方法（当调用委托时）。该字段将保存对Task实例的引用。总结一下：
更新：
我通过Ants Memory Profiler，证实了我的想法：
Firstly, I should point out that this doesn't have much to with scope, which is the region of program text in which one can refer to an entity using its simple name. It's about reachability.
Now I haven't looked at the heap in question with a memory profiler, but the path to aTaskobject would look something like this:Action(multicast) delegate instance is a GC root since it is referenced byruns(a local)._invocationlistfield, which holds a reference to a delegate array.Actiondelegate instances._targetfield (which will act as thethisreference passed to theTask.Runmethod when the delegate is invoked). This field will hold a reference to theTaskinstance.To summarize:
UPDATE:
I ran this through Ants Memory Profiler, which confirmed my thoughts: