[8u66] RFR 8079410: Hotspot version to share the same update and build version from JDK

[Alejandro E Murillo]

On 7/20/2015 7:01 PM, David Holmes wrote:
> Hi Alejandro,
>
> On 21/07/2015 10:45 AM, Alejandro E Murillo wrote:
>>
>> Please review the following change that allows setting
>> the Hotspot minor version and build number to that
>> of the "--with-update-version" and "--with-build-number"
>> configure parameters when provided. 8u  builds only.
>>
>> webrev:
>>
cut from the wrong tab, here you go:
http://cr.openjdk.java.net/~amurillo/8u66/8079410/

Alejandro
>
> That location is not available externally.
>
> David
>
>> Background (since bug was originally filed as internal):
>>
>> Currently, for 8u builds and earlier, the hotspot version looks like 
>> this
>> (remnant from the hotspot express days):
>>
>> Java HotSpot(TM) Client VM (build 25.66-b00, mixed mode, sharing)
>>
>>
>> By convention, minor version (66 above) always matches the JDK update
>> version
>> and hotspot build number is managed independently of the JDK build 
>> number.
>> Both values  are defined by default  in "hotspot/make/hotspot_version".
>> With this change they can now be setup using the corresponding JDK
>> configure parameters.
>>
>> Consequences:
>>
>> (1)  For promoted and other milestone builds, the hotspot minor version
>> will corresponds to the JDK update version and the hotspot build number
>> will match  the JDK build number.
>>
>> (2) Hotspot snapshots will no longer need to change the hotspot build
>> number
>> as that will be set at promotion time (matching the JDK build number).
>> Since this is stored in the file mentioned above, a  repo push
>> (and the corresponding bug) was required to  change it.
>> That will no longer be necessary.
>>
>> (3)  Since JPRT configures both the update and build numbers,
>>   when building via JPRT, the hotspot build number for those builds
>> will always be  'b00' (matching the JDK build number). The Hotspot
>> minor version will match the update version defined in
>> make/jprt.prtoperties:
>>
>> java version "1.8.0_66-internal"
>> #   Java(TM) SE Runtime Environment (build
>> 1.8.0_66-internal-20150720195933.amurillo.8079410-control-b00)
>> #   Java HotSpot(TM) Client VM (build 25.66-b00, mixed mode, sharing)
>>
>> (4) Since the version string is not actually changing, I do not expect
>> this to have
>> any impact on external tools or apps, but let me know if so.
>>
>> Thanks
>>

-- 
Alejandro