[Lldb-commits] [lldb] [LLDB][SBSaveCore] Add Extension to Save a thread and N pointers deep (PR #111601)

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jeffreytan81 wrote:

> > I think we can do better than save at memory region fidelity which is at least at page boundary if I am not wrong.
> 
> > We can use type information to query and save the object's size without including hundreds of unrelated objects in the
> > heap happen to be in the same page. This should greatly reduce the size of the dump.
> 
> I'm okay with this, when @clayborg and I talked about this the original assumption is we should do the entire memory region it's in, because with deduplication we will likely get multiple pointers to the same heap. I think we should leave this heap-region mode, and then also build a 'just save my objects' extension.

The value of this option lies in reducing the size to a minimum while retaining useful information. In such cases, saving object closures is a superior choice compared to saving memory regions. You can easily achieve minidumps that are 2 to 3 times smaller in some cases. 

https://github.com/llvm/llvm-project/pull/111601