RFR: 8142979: Add programmatic enable/disable methods to Unified Logging

[Coleen Phillimore]

I'm confused how this API works.

http://cr.openjdk.java.net/~mockner/classunload/src/share/vm/prims/jvmtiEnv.cpp.sdiff.html

I imagine we'd want to do:

if (value != 0) {
   LogConfiguration::configure_stdout(info, true, classunload);
} else {
   LogConfiguration::configure_stdout(off, true, classunload);
}

???
Thanks,
Coleen


On 11/25/15 7:13 AM, Marcus Larsson wrote:
> Hi,
>
> Please review the following patch adding support for configuration of 
> the stdout unified logging output from within the VM itself.
>
> The patch adds the configure_stdout() function, allowing a set of tags 
> to be set to the given level on stdout.
> To disable logging the level is simply specified as LogLevel::Off.
>
> The patch depends on the fix for 8142952 [0] that's currently out on 
> review, so the configuration is correctly aggregated rather than reset.
>
> Webrev:
> http://cr.openjdk.java.net/~mlarsson/8142979/webrev.00/
>
> Issue:
> https://bugs.openjdk.java.net/browse/JDK-8142979
>
> Thanks,
> Marcus
>
> [0]: https://bugs.openjdk.java.net/browse/JDK-8142952