如何列出GC完成列表中的所有对象？ [英] How to list all object in GC finalization list?

问题描述

我的程序崩溃了，它是VS的可视化工具，所以它很难调试它，我试图做出转储并使用WinDbg来研究它，但它不成功。

所以，现在我尝试以编程方式将我的手放在该列表上，但我不知道如何。感谢。

解决方案

我不认为有一种方法可以通过.NET的托管框架类库获得终止队列FCL）。我怀疑如果你想以的方式执行而不是使用WinDbg进行调试，你（就像WinDbg和类似的工具）需要使用CLR的非托管调试&为此目的分析API。

查看 ICORDebugGCReferenceEnum COM界面。您可以通过 ICorDebugProcess5 :: EnumerateGCReferences ：

提供一个枚举器

填充的集合中的对象中的 / usr / library / hh387794.aspxrel =nofollow noreferrertitle =MSDN reference page> COR_GC_REFERENCE [ ICorDebugGCReferenceEnum ::





• 所有托管堆栈中的对象，包括托管代码中的实时引用以及公共语言运行库创建的对象。
> 来自手柄表的物体。这包括强引用（ HNDTYPE_STRONG 和 HNDTYPE_REFCOUNT ）和模块中的静态变量。



• 来自终结器队列的对象。终结器队列根对象，直到终结器运行。

（超链接和强调由我添加。）

枚举器返回的每个对象都有一个字段 type 。您可能需要筛选该字段与该值匹配的对象 CorGCReferenceType.CorReferenceFinalizer 。

I have crash in my program, it is a visualizer for VS, so, it is very hard to debug it, i have tried to make dump and use WinDbg to study it, but it unsuccessful.

So, now i try to put my hands on that list programmatically, but i don't know how. Thanks.

解决方案

I do not think that there is a way to get at the finalization queue via .NET's managed Framework Class Library (FCL). I suspect that if you want to do this programmatically instead of debugging with WinDbg, you (just like WinDbg and similar tools) will need to use the CLR's unmanaged debugging & profiling APIs towards that end.

Take a look at the ICORDebugGCReferenceEnum COM interface. You can retrieve on object of that type via ICorDebugProcess5::EnumerateGCReferences:

"Provides an enumerator for objects that will be garbage-collected."

"The COR_GC_REFERENCE objects in the collection populated by [the ICorDebugGCReferenceEnum::Next method] represent three kinds of objects:

• Objects from all managed stacks. This includes live references in managed code as well as objects created by the common language runtime.

• Objects from the handle table. This includes strong references (HNDTYPE_STRONG and HNDTYPE_REFCOUNT) and static variables in a module.

• Objects from the finalizer queue. The finalizer queue roots objects until the finalizer has run."

(Hyperlinks and emphasis added by me.)

Each object returned by the enumerator has a field type. You might want to filter for objects where that field matches the value CorGCReferenceType.CorReferenceFinalizer.

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