7904105: intermittent test failure in CleanupDirTests.agentvm.conc

[vpa1977]

jtharness does not synchronize calls to Observer. Synchronized keyword needs to be added when processing shared state.

---

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

• CODETOOLS-7904105: intermittent test failure in CleanupDirTests.agentvm.conc (Bug - P4)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jtreg.git pull/297/head:pull/297
$ git checkout pull/297

Update a local copy of the PR:
$ git checkout pull/297
$ git pull https://git.openjdk.org/jtreg.git pull/297/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 297

View PR using the GUI difftool:
$ git pr show -t 297

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jtreg/pull/297.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back vpetko! 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 change is not yet ready to be integrated.
See the Progress checklist in the description for automated requirements.

[mlbridge]

Webrevs

• 00: Full (e346596f)

[jaikiran]

Hello Vladimir, we have seen intermittent failure in this test too, but i haven't had a chance to look deeper.

TestStats deals with counts in several different methods, so I'm not completely sure the proposed change is enough or the best way to address this. It may be that the code in TestStats itself might need to be addressed in some manner.

[vpa1977]

Hello Vladimir, we have seen intermittent failure in this test too, but i haven't had a chance to look deeper.

TestStats deals with counts in several different methods, so I'm not completely sure the proposed change is enough or the best way to address this. It may be that the code in TestStats itself might need to be addressed in some manner.

Hi,

I have tried using atomics in TestStats and the implementation looked ugly / required a lot of refactoring.

jtreg only updates counts using jtharness Observer callbacks. We already use synchonzied keyword in Observer callbacks[1] as the TestRunner spawns multiple threads if we specify concurrency > 1. I have used Intellij Idea to find all inheritors of BasicObserver and added synchronization.

Maybe the better way would be to synchronize in jtharness itself to avoid doing it in the client code?
Hmm, this is probably impossible unless we want to make a breaking change and remove notifier field from Script class.

[1]

jtreg/src/share/classes/com/sun/javatest/regtest/report/ElapsedTimeHandler.java

Line 64 in 34ccc66

public synchronized void startingTest(TestResult tr) {

[bridgekeeper]

@vpa1977 This pull request has been inactive for more than 4 weeks and will be automatically closed if another 4 weeks passes without any activity. To avoid this, simply issue a /touch or /keepalive command to the pull request. Feel free to ask for assistance if you need help with progressing this pull request towards integration!

[vpa1977]

/touch

[openjdk]

@vpa1977 The pull request is being re-evaluated and the inactivity timeout has been reset.