[System.Native] Add SystemNative_GetCpuUtilization

[filipnavara]

Moving implementation from CoreRT to allow sharing of thread pool code (dotnet/corert#6880).

Original code: https://github.com/dotnet/corert/blob/3f926ac91133dd618dcf6821b63782d1de19a72c/src/Native/System.Private.CoreLib.Native/pal_time.cpp#L146-L228

[filipnavara]

@dotnet-bot test Linux arm64 Release Build

[jkotas]

@dotnet-bot test Linux arm64 Release Build

[filipnavara]

"Linux arm64 Release Build" now fails on all new PRs, even the ones that touch only documentation :/

[stephentoub]

"Linux arm64 Release Build" now fails on all new PRs, even the ones that touch only documentation :/

Yeah, it's an infrastructure issue. I'm planning to disable the leg unless it's otherwise addressed this morning.

[stephentoub]

Thanks.

[filipnavara]

Thanks! Are there any docs on how is the ingestion between CoreCLR/CoreRT/CoreFX triggered? I assume it's the @dotnet-maestro-bot PRs and that it's enough to just wait... :-)

[stephentoub]

Are there any docs on how is the ingestion between CoreCLR/CoreRT/CoreFX triggered?

There probably are somewhere, though it's all currently in flux, so even if there is, it may be out of date.

I assume it's the @dotnet-maestro-bot PRs and that it's enough to just wait... :-)

In general, yes. 😄

[jkotas]

CoreRT is not enlisted in the dotnet-maestro-bot auto-updater.

We update corefx version for corert manually when necessary in: https://github.com/dotnet/corert/blob/master/dependencies.props#L5

[stephentoub]

CoreRT is not enlisted in the dotnet-maestro-bot auto-updater.

Ah, I didn't realize that. Thanks.

[filipnavara]

Ah, thanks. I will send PR.