RFR: 8234748: Clean up atomic and orderAccess includes

[Thomas Schatzl]

Hi Stefan,

   thanks for tackling this.

On 26.11.19 12:11, Stefan Karlsson wrote:
> Hi all,
> 
> Please review this trivial, but large, patch to cleanup the includes of 
> atomic.hpp and orderAccess.hpp.
> 
> https://cr.openjdk.java.net/~stefank/8234748/webrev.01/
> https://bugs.openjdk.java.net/browse/JDK-8234748
> 
> Thanks,
> StefanK

I did the following bash-fu to find missing/superfluous includes:

  grep "Atomic::" `find . -name '*.?pp'` | sed 's/\(.*pp\):.*/\1/' | 
uniq | sort > users.txt
$ grep "atomic.hpp" `find . -name '*.?pp'` | sed 's/\(.*\):.*/\1/' | 
uniq | sort > includers.txt
$ diff users.txt includers.txt > diff.txt

diff.txt then contained the differences, with some false positives, all 
about containing the keywords in comments. Otherwise I think this should 
be complete.

The same has been done with "OrderAccess::" and "orderAccess.hpp".

Here are the results:

Improvements to orderAccess.hpp includes:

- gc/shenandoah/shenandoahVerifier.cpp misses it

- the #include from gc/z/zLiveMap.inline.hpp should maybe be moved to 
zLiveMap.cpp

Improvements to atomic.hpp includes:

In the following files the include of atomic.hpp should be removed as it 
seems unnecessary:
- share/utilities/bitMap.hpp
- share/oops/oop.hpp
- share/gc/z/zNMethodTable.cpp
- share/gc/shenandoah/shenandoahForwarding.inline.hpp
- share/gc/g1/g1CardTable.cpp
- os_cpu/solaris_x86/os_solaris_x86.cpp

The following need a #include atomic.hpp:
- share/oops/methodData.cpp
- share/oops/constantPool.cpp
- share/memory/metaspace/virtualSpaceNdoe.cpp
- os/posix/os_posix.cpp

Looks good otherwise.

Thanks,
   Thomas