RFR: JDK-8301661: Enhance os::pd_print_cpu_info on macOS and Windows

[David Holmes]

On Fri, 3 Feb 2023 08:25:09 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

> Enhance os::pd_print_cpu_info on macOS and Windows by information about CPU frequency and caches.
> On Windows , this info can be obtained by the Processor Power Information API or "powerbase" (CallNtPowerInformation , see https://learn.microsoft.com/en-us/windows/win32/api/powerbase/nf-powerbase-callntpowerinformation ); this is available since Windows Server 2003/XP.
> On macOS, sysctlbyname can be used.

Okay the usual question when we augment the information that will appear in hs_err file: how safe is this going to be to call from a signal handler?

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PR: https://git.openjdk.org/jdk/pull/12403