On Thu, 14 Sep 2023 12:32:18 GMT, Joachim Kern <jk...@openjdk.org> wrote:

>> After push of [JDK-8307478](https://bugs.openjdk.org/browse/JDK-8307478) , 
>> the following test started to fail on AIX :
>> com/sun/tools/attach/warnings/DynamicLoadWarningTest.java;
>> The problem was described in 
>> [JDK-8309549](https://bugs.openjdk.org/browse/JDK-8309549) with a first try 
>> of a fix.
>> A second fix via [JDK-8310191](https://bugs.openjdk.org/browse/JDK-8310191) 
>> was necessary.
>> Both fixes just disable the specific subtest on AIX, without correction of 
>> the root cause.
>> The root cause is, that dlopen() on AIX returns different handles every 
>> time, even if you load a library twice. There is no official AIX API 
>> available to get this information on a different way.
>> My proposal is, to use the stat64x API with the fields st_device and 
>> st_inode. After a dlopen() the stat64x() API is called additionally to get 
>> this information which is then stored parallel to the library handle in the 
>> jvmtiAgent. For AIX we then can compare these values instead of the library 
>> handle and get the same functionality as on linux.
>
> Joachim Kern has updated the pull request incrementally with two additional 
> commits since the last revision:
> 
>  - Merge remote-tracking branch 'origin/JDK-8315706' into JDK-8315706
>  - Following the proposals

Changes requested by dholmes (Reviewer).

src/hotspot/share/prims/jvmtiAgent.hpp line 48:

> 46: #ifdef AIX
> 47:   unsigned long _inode;
> 48:   unsigned long _device;

It is best, IMO, to use the actual types rather than something expected to be 
"equivalent".

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

PR Review: https://git.openjdk.org/jdk/pull/15583#pullrequestreview-1628087511
PR Review Comment: https://git.openjdk.org/jdk/pull/15583#discussion_r1326697271

Reply via email to