RFR: 8248186: Move CDS C++ vtable code to cppVtables.cpp

[Ioi Lam]

On Fri, 11 Sep 2020 22:28:45 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> I moved the code that supports C++ vtables in the CDS archive from metaspaceShared.cpp to a new file, cppVtables.cpp.
>> To keep the refactoring straightforward, the code is moved verbatim, except for:
>> - Methods are renamed from `MetaspaceShared::xx` to `CppVtables::xx`
>> - Access to `_mc_region` is changed to the inline function `mc_region()`
>
> src/hotspot/share/memory/cppVtables.cpp line 33:
> 
>> 31: #include "oops/instanceMirrorKlass.hpp"
>> 32: #include "oops/instanceRefKlass.hpp"
>> 33: #include "oops/methodData.hpp"
> 
> Did you check that you needed all of these #include files?

Yes, I started with no headers and kept adding until gcc stopped complaining. I was using a non-PCH build.

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PR: https://git.openjdk.java.net/jdk/pull/136