Integrated: JDK-8256367: [windows] Better logging for some system calls

[Thomas Stuefe]

On Sat, 14 Nov 2020 06:15:29 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

> Hi,
> 
> may I please have reviews for the following patch. Its purpose is to make error analysis easier for cases like https://bugs.openjdk.java.net/browse/JDK-8255917 or https://bugs.openjdk.java.net/browse/JDK-8255954.
> 
> It does two things:
> - it adds consistent tracing to some of the more important system calls, especially those having to do with virtual memory handling. We now log the success case (on the highest level only) as well as the error case (on the lowest possible level below warning).
> - It adds error handling and logging to os::split_reserved_memory(). It adds an assert if that function fails, since if it fails, we really should stop.
> 
> Thank you,
> 
> Thomas

This pull request has now been integrated.

Changeset: 298bce1d
Author:    Thomas Stuefe <stuefe at openjdk.org>
URL:       https://git.openjdk.java.net/jdk/commit/298bce1d
Stats:     112 lines in 1 file changed: 91 ins; 5 del; 16 mod

8256367: [windows] Better logging for some system calls

Reviewed-by: iklam

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PR: https://git.openjdk.java.net/jdk/pull/1214