RFR: JDK-8056999 Make hotspot builds less verbose on default log level

[Erik Joelsson]

Looks good to me.

/Erik

On 2014-09-15 13:16, Magnus Ihse Bursie wrote:
> Here is the full review of this fix. I have now applied the same 
> pattern as I used on linux to aix, bsd and solaris as well.
>
> It turned out that windows was problematic. Due to the big difference 
> between windows and the unix versions (different and/or limited nmake 
> flexibility, different and/or limited shell functionality and 
> differences in design in the hotspot make files), I did not manage to 
> get a working Windows version of this fix in a reasonable time frame. 
> (This fix has already taken more time than I wanted to spend on it.)
>
> I suggest that this fix nevertheless is an improvment on the other 
> platforms, and that I open a new bug report for the remaining work on 
> Windows.
>
> And here's what I wrote about the preliminary version of this fix:
>
> Even in the default log level ("warn"), hotspots builds are extremely 
> verbose. With the new jigsaw build system, hotspot is build in 
> parallel with the jdk, and the sheer amount of hotspot output makes 
> the jdk output practically disappear.
>
> This fix will make the following changes:
> * When hotspot is build from the top dir with the default log level, 
> all repetetive and purely informative output is hidden (e.g. names of 
> files compiled, and the "INFO:" blobs).
> * When hotspot is build from the top dir, with any other log level 
> (info, debug, trace), all output will be there, as before.
> * When hotspot is build from the hotspot repo, all output will be 
> there, as before.
>
> I have tested building on JPRT with LOG=debug and LOG=warn, and it all 
> looks as it should as far as I could tell.
>
> Bug: https://bugs.openjdk.java.net/browse/JDK-8056999
> WebRev: 
> http://cr.openjdk.java.net/~ihse/JDK-8056999-less-verbose-hotspot-builds/webrev.02
>
> /Magnus