RFR: JDK-8320830: [AIX] Dont mix os::dll_load() with direct dlclose() calls [v2]

[Thomas Stuefe]

On Thu, 30 Nov 2023 08:47:16 GMT, Joachim Kern <jkern at openjdk.org> wrote:

>> We should not mix os::dll_load() with dlclose(), but should call os::dll_unload(). At the moment this is benign, but this prevents certain type of platforms specific workarounds inside os::dll_load() and is a prerequisite for these upcoming changes. 
>> 
>> There are two places I see where this happens, both are AIX specific:
>> 
>> 
>> os/aix/libodm_aix.cpp
>> 51: dlclose(_libhandle);
>> 58: if (_libhandle) { dlclose(_libhandle); }
>> 
>> os/aix/libperfstat_aix.cpp
>> 117: dlclose(g_libhandle);
>
> Joachim Kern has updated the pull request incrementally with one additional commit since the last revision:
> 
>   replaced local scope by class scope

Still good.

-------------

Marked as reviewed by stuefe (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/16846#pullrequestreview-1756973084