RFR(13): JDK-8216263: Add historical data for JDK 12

[Joe Darcy]

Hi Jan,

Thanks for looking into this. The generated information is much smaller 
as you note, 1087 inserted lines vs 16328 inserted lines before.

 From looking over data for several modules, the revised changes look 
plausible in terms of corresponding to known work in those areas.

Looks good!

Cheers,

-Joe

On 2/7/2019 9:21 AM, Jan Lahoda wrote:
> Hello,
>
> I've regenerated the patch using JDK 12b30, and also using the patch 
> from:
> https://mail.openjdk.java.net/pipermail/compiler-dev/2019-February/012938.html 
>
>
> (which makes the historical record smaller).
>
> The updated patch is here:
> http://cr.openjdk.java.net/~jlahoda/8216263/webrev.04/
>
> How does that look?
>
> Thanks,
>     Jan
>
> On 18.1.2019 18:06, Jan Lahoda wrote:
>> Adding build-dev.
>>
>> Jan
>>
>> On 17.1.2019 19:53, Jan Lahoda wrote:
>>> On 17.1.2019 17:58, Jonathan Gibbons wrote:
>>>> Re:
>>>>
>>>>    36 #   The checkout must not have any local changes that could
>>>> interfere with the new data. In particular,
>>>>    37 #   there must be absolutely no changed, new or removed files
>>>> under the ${JDK_CHECKOUT}/make/data/symbols
>>>>    38 #   directory.
>>>>
>>>> That seems like a simple check that could be incorporated into the
>>>> script itself.
>>>>
>>>> But, it also seems reasonable to separate enhancements like that from
>>>> the specific issue here, to add historical data for 12.
>>>
>>> Ok. Sent as:
>>> https://mail.openjdk.java.net/pipermail/compiler-dev/2019-January/012879.html 
>>>
>>>
>>>
>>>
>>> And limited this patch to the historical data only:
>>> http://cr.openjdk.java.net/~jlahoda/8216263/webrev.03/
>>>
>>> Thanks,
>>>     Jan
>>>
>>>>
>>>> -- Jon
>>>>
>>>> On 1/17/19 8:51 AM, Jan Lahoda wrote:
>>>>> Hi Joe,
>>>>>
>>>>> On 17.1.2019 02:13, Joseph D. Darcy wrote:
>>>>>> Hi Jan,
>>>>>>
>>>>>> On 1/8/2019 2:13 AM, Jan Lahoda wrote:
>>>>>>> Hi Joe,
>>>>>>>
>>>>>>> Thanks for the comments, some responses inline. Updated webrev:
>>>>>>> http://cr.openjdk.java.net/~jlahoda/8216263/webrev.01/
>>>>>>>
>>>>>>> On 7.1.2019 23:51, Joseph D. Darcy wrote:
>>>>>>>> Hi Jan,
>>>>>>>>
>>>>>>>> On 1/7/2019 4:48 AM, Jan Lahoda wrote:
>>>>>>>>> Hi,
>>>>>>>>>
>>>>>>>>> To make --release 12 work, we need to add historical data for JDK
>>>>>>>>> 12.
>>>>>>>>> The current historical data is based on:
>>>>>>>>> $ javac  -fullversion
>>>>>>>>> javac full version "12-ea+26"
>>>>>>>>>
>>>>>>>>> We may need to update the data once JDK 12 is out to cover any
>>>>>>>>> changes
>>>>>>>>> to the APIs that might happen.
>>>>>>>>>
>>>>>>>>> The patch also adds a simple (shell) script to generate the
>>>>>>>>> data, so
>>>>>>>>> all that was needed to generate the data was:
>>>>>>>>> $ cd make/data/symbols
>>>>>>>>> $ sh generate-data <path-to-JDK-12>
>>>>>>>>>
>>>>>>>>> JBS: https://bugs.openjdk.java.net/browse/JDK-8216263
>>>>>>>>> Webrev: http://cr.openjdk.java.net/~jlahoda/8216263/webrev.00/
>>>>>>>>>
>>>>>>>>> How does this look?
>>>>>>>>
>>>>>>>> If the overhead is small enough and we don't mind a few updates to
>>>>>>>> the
>>>>>>>> JDK N+1 data, than perhaps the generation of this information
>>>>>>>> could be
>>>>>>>> included as part of the start of JDK N+1 activities.
>>>>>>>
>>>>>>> That would be perfect!
>>>>>>>
>>>>>>>>
>>>>>>>> I suggest a more extensive description of how to
>>>>>>>> make/data/symbols/generate-data. For example, this builds the data
>>>>>>>> for
>>>>>>>> the current release independent of whether or not the current
>>>>>>>> release
>>>>>>>> has already had its data generated, correct?
>>>>>>>
>>>>>>> Yes.
>>>>>>>
>>>>>>>>
>>>>>>>> Concretely, if JDK N+1 has already forked, what is the proper way
>>>>>>>> to get
>>>>>>>> data for JDK N? Likewise, how should a re-build of the data for 
>>>>>>>> JDK
>>>>>>>> N be
>>>>>>>> done?
>>>>>>>
>>>>>>> What exactly should be there? To the existing description:
>>>>>>> # to generate (add) data for JDK N, do:
>>>>>>> # cd make/data/symbols
>>>>>>> # sh generate-data <path-to-JDK-N>
>>>>>>>
>>>>>>> I've added (in .01):
>>>>>>> # to regenerate the data for JDK N, run the above commands again
>>>>>>>
>>>>>>> What more should be there?
>>>>>>>
>>>>>>
>>>>>> I'd appreciate somewhere to have a textual discussion of how
>>>>>> make/data/symbols/symbols should be updated, the A = 10, B = 11, 
>>>>>> etc.
>>>>>> convention, what else need to be done to generate the contents of 
>>>>>> this
>>>>>> changeset.
>>>>>>
>>>>>> The <patch-to-JDK-N> is the contents of the build directory?
>>>>>>
>>>>>> In general, a description of how the data of JDK N should be 
>>>>>> added to
>>>>>> JDK (N+1).
>>>>>
>>>>> I've added more textual description to the script, an updated webrev
>>>>> is here:
>>>>> http://cr.openjdk.java.net/~jlahoda/8216263/webrev.02/
>>>>>
>>>>> Jan
>>>>>
>>>>>>
>>>>>> Thanks,
>>>>>>
>>>>>> -Joe
>>>>>>
>>>>>>