RFR: 8365606: Container code should not be using jlong/julong [v2]

[Severin Gehwolf]

On Mon, 27 Oct 2025 11:32:34 GMT, Casper Norrbin <cnorrbin at openjdk.org> wrote:

>> Severin Gehwolf has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains six additional commits since the last revision:
>> 
>>  - Merge branch 'master' into jdk-8365606-jlong-julong-refactor
>>  - Fix print_container_info output
>>  - whitespace clean-ups and other small fixes
>>  - Fix log format in container macro and scanf format
>>  - Fix duplicate include in osContainer_linux
>>  - 8365606: Container code should not be using jlong/julong
>
> src/hotspot/os/linux/cgroupV2Subsystem_linux.cpp line 61:
> 
>> 59:  *    true if the result reference got updated
>> 60:  *    false if there was an error
>> 61:  */
> 
> We set result to `-1` and return true on a no share setup here, but return `false` and don't on cgroup v1. The comment is contradicting.

Good catch. Fixed the cgroup v1 code to match the old behaviour (set `-1` in the result reference and return `true` if we read the default value). I think this fixes the issue.

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PR Review Comment: https://git.openjdk.org/jdk/pull/27743#discussion_r2510712320