8286030: Avoid JVM crash when containers share the same /tmp dir

[GoeLin]

I backport this for parity with 11.0.19-oracle.

In 11, there is a perfMem file in each os directory.
In 17, they were merged into a single file in posix, which is touched by the original
change backported here.
So I had to distribute the changes to multiple files.
But the changes would have applied clean. On top,
I "evaluated" the ifdef LINUX statements accordingly.
I edited aix, bsd and linux. On aix, I checked the build
is still working. bsd and linux get the ususal testing.
As I have no means at all to test Solaris, i left it out.
This does not matter funcionally, because the changes
out of the #ifdef Linux parts are cosmetic improvements.

---

Progress

• Change must be properly reviewed (1 review required, with at least 1 Reviewer)
• Change must not contain extraneous whitespace
• Commit message must refer to an issue

Issue

• JDK-8286030: Avoid JVM crash when containers share the same /tmp dir

Reviewers

• Paul Hohensee (@phohensee - Reviewer)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk11u-dev pull/1716/head:pull/1716
$ git checkout pull/1716

Update a local copy of the PR:
$ git checkout pull/1716
$ git pull https://git.openjdk.org/jdk11u-dev pull/1716/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 1716

View PR using the GUI difftool:
$ git pr show -t 1716

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk11u-dev/pull/1716.diff

[bridgekeeper]

👋 Welcome back goetz! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

This backport pull request has now been updated with issue from the original commit.

[mlbridge]

Webrevs

• 00: Full (7150e31b)

[phohensee]

Lgtm.

[openjdk]

@GoeLin This change now passes all automated pre-integration checks.

After integration, the commit message for the final commit will be:

8286030: Avoid JVM crash when containers share the same /tmp dir

Reviewed-by: phh

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

At the time when this comment was updated there had been no new commits pushed to the master branch. If another commit should be pushed before you perform the /integrate command, your PR will be automatically rebased. If you prefer to avoid any potential automatic rebasing, please check the documentation for the /integrate command for further details.

➡️ To integrate this PR with the above commit message to the master branch, type /integrate in a new comment.

[GoeLin]

/integrate

[openjdk]

Going to push as commit c58a066.
Since your change was applied there have been 5 commits pushed to the master branch:

• 43a0015: 8297489: Modify TextAreaTextEventTest.java as to verify the content change of TextComponent sends TextEvent
• d0984df: 8223716: sun/net/www/http/HttpClient/MultiThreadTest.java should be more resilient to unexpected traffic
• 2c47c45: 8273497: building.md should link to both md and html
• 816e53b: 8298129: Let checkpoint event sizes grow beyond u4 limit
• 0c42ee4: 8295774: Write a test to verify List sends ItemEvent/ActionEvent

Your commit was automatically rebased without conflicts.

[openjdk]

@GoeLin Pushed as commit c58a066.

💡 You may see a message that your pull request was closed with unmerged commits. This can be safely ignored.