-Xlog and the module system

[David Holmes]

On 2/02/2017 8:59 PM, Nicolai Parlog wrote:
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>  Hi Alan.
>
>> The trace messages emitted by -Xdiag:resolver are printed as the
>> resolver runs.
>
> I'm sorry for being such a noob but my Google Foo failed at telling me
> how to turn trace on for -Xdiag. :( Can you help me out?

java -Xdiag ...

will enable tracing for general launcher "diagnostics" as well as the 
resolver.

java -Xdiag:resolver ...

will only enable tracing for the resolver.

David

>  so long ... Nicolai
>
>
>
> On 02.02.2017 09:07, Alan Bateman wrote:
>> On 01/02/2017 21:49, Nicolai Parlog wrote:
>>
>>> Hi Alan,
>>>
>>> `-Xdiag:resolver` is awesome! :) I think these messages are
>>> great candidates for info-level messages with the "modules" tag
>>> via unified logging.
>> I agree it should be transparent to developers using the JDK as to
>> whether the implementation is in libjvm or else where, something
>> that will likely more of an issue going forward when more of the
>> run time is written in the Java Language.
>>
>>>
>>> Something else I noticed, neither Xlog nor Xdiag help with
>>> problematic configurations - both only start logging after
>>> everything checked out, so with missing modules (for example),
>>> they do not provide additional information.
>> The trace messages emitted by -Xdiag:resolver are printed as the
>> resolver runs. So aside from the initial module then they would see
>> some output when transitive dependences can't be found.
>>
>> -Alan
>>
>
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