RFR (XL) 8081519 Split globals.hpp to factor out the Flag class

[Gerard Ziemski]

Thank you Vladimir for the review.

> On Mar 30, 2018, at 12:33 PM, Vladimir Kozlov <vladimir.kozlov at oracle.com> wrote:
> 
> Renaming and other changes looks good to me.
> 
> But my suggestion about new directory was to have it on the same level as runtime/ directory and not inside it.

I thought about that, and decided that "share/runtime/jvmFlag" better describes the purpose of the files there than just "share/jvmFlag".

We have the precedence of others that extend the hierarchy in similar matter like “share/gc/g1, share/gc/parallel”, though “share/gc/“ itself has no files on its own.

So, can we leave thing as proposed or do we need further discussion?


cheers

> I also thought you will move globals* files and test_globals.cpp but I am fine with leaving them as they are.
> 
> Thanks,
> Vladimir
> 
> On 3/30/18 10:27 AM, Gerard Ziemski wrote:
>> Hi all,
>> Please review this large and tedious (sorry), but simple fix that accomplishes the following:
>> #1 factor out the command option flag related APIs out of globals.hpp/.cpp into its own dedicated files, i.e. jvmFlag.hpp/.cpp
>> #2 moved all jvmFlag* files into its own dedicated folder (i.e. src/hotspot/share/runtime/jvmFlag/)
>> #3 merge Flag (too generic name) and CommandLineFlag classes and rename them as JVMFlag
>> #4 cleanup globals.hpp includes originally added by the JEP-245
>> Note: the renamed file retain their history, but one needs to add “follow” flag, ex. “hg log -f file”
>> https://bugs.openjdk.java.net/browse/JDK-8081519
>> http://cr.openjdk.java.net/~gziemski/8081519_rev2
>> Passes Mach5 hs_tier1-tier5, jtreg/runtime/CommandLine/OptionsValidation/TestOptionsWithRanges tests.
>> cheers