RFR: 8345286: Remove use of SecurityManager API from misc areas [v5]

[Severin Gehwolf]

On Mon, 2 Dec 2024 14:16:02 GMT, Jaikiran Pai <jpai at openjdk.org> wrote:

>> Can I please get a review of this change which removes usages of SecurityManager related APIs and some leftover related to SecurityManager changes?
>> 
>> This addresses https://bugs.openjdk.org/browse/JDK-8345286. Most of these changes are trivial. The `src/java.base/linux/classes/jdk/internal/platform/CgroupUtil.java` used to expose utility methods for dealing with SecurityManager permissions and it was called from a few places. That class is no longer needed with the clean up done in this PR.
>> 
>> No new tests have been introduced and tier testing is currently in progress.
>
> Jaikiran Pai has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Update src/java.base/linux/classes/jdk/internal/platform/CgroupSubsystemController.java
>   
>   Co-authored-by: Severin Gehwolf <jerboaa at gmail.com>

cgroups changes look good. Haven't looked at the other bits.

src/java.base/linux/classes/jdk/internal/platform/CgroupSubsystemController.java line 29:

> 27: package jdk.internal.platform;
> 28: 
> 29: import java.io.BufferedReader;

Unused now?

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Marked as reviewed by sgehwolf (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/22478#pullrequestreview-2472822295
PR Review Comment: https://git.openjdk.org/jdk/pull/22478#discussion_r1865928383