Getting per-thread CPU time on *BSD

[Harald Eilertsen]

Hi,

A quick update on my part.

I have figured out how to get both user time and user+sys time on
FreeBSD.

https://git.anduin.net/haraldei/bsd-thread-time-example

This is quite similar to the OpenBSD code by Kurt Miller that was
already in the BSD port tree. I have a local patch based on that
which replace the existing FreeBSD code with combined code for OpenBSD
and FreeBSD. I will need help from someone to add support for NetBSD,
though.

I'm a bit unsure about what to do next however. Do you want me to submit
the changes to the OpenJDK mainline repo? It won't in itself fix BSD
support for OpenJDK, but could be one of the many steps on the way.

In any case, it should be safe to go on with whatever needs you have for
this information, we are able to provide it on the BSD's as well.

H!