ICLRMetaHost's EnumerateLoadedRuntimes and dotnet core

[ogxd]

I am currently trying to attach a profiler to a running dotnet application (see my attempts in this repo, or more precisely this code).

Using ICLRMetaHost, I am able to list installed runtimes with EnumerateInstalledRuntimes (it returns v2.0.50727 and v4.0.30319), however, EnumerateLoadedRuntimes returns an empty enumeration when used against a process hosting a simple .NET 6.0 console application.

I tried changing the target to .NET3.1 and .NET5.0 and switch between Debug and Release build but the enumeration is still empty.
Both my C++ code and .NET process are running x64.
Despite the empty enum, I tried attaching my profiler to the process anyway using a ICLRRuntimeInfo for v4.0.30319 but then ICLRProfiling->AttachProfiler returns FILE_NOT_FOUND (0x80070002) (I double checked my profiler .dll path).

So at this point I am wondering if this API even works under dotnet core? Because I can't see it written explicitly anywhere, but since the headers for this API are present in repository, I guess it is supposed to work?

runtime/src/coreclr/pal/prebuilt/inc/metahost.h

Line 150 in 57bfe47

virtual HRESULT STDMETHODCALLTYPE EnumerateLoadedRuntimes(

[ogxd]

I just tried AttachProfiler on a .NET Framework 4.7.2 application (instead of a dotnet core application) and this time it works: EnumerateLoadedRuntimes outputs v4.0.30319 and AttachProfiler works as expected.

So the question that remains is: why doesn't it work on a dotnet core application?

[ogxd]

Ok so I figured out that ICLRProfiling wasn't part of dotnet core runtime (I was using windows SDK headers), and I stumbled upon this piece of information, so I'll try going this way 🤠🤞

[ogxd]

So I just used Microsoft.Diagnostics.NETCore.Client with this simple utility method and it worked perfectly!
I think it could be really interesting to reference this package in more places, it did not show up from google after like 3 days of searching, I found it while desperately browsing the dotnet/runtime repository manually.