8262725: IGV: crash when removing all graphs in a group

[robcasloz]

This change makes IGV close graph views when their groups are either a) removed or b) emptied (all graphs are removed but the group remains), and avoids faulty graph view computation in case b).

Tested the following scenarios manually (on groups loaded both via network and from a file, and on JDK 8, 11, and 15):

1. open a graph, then remove all graphs in the group (as described in the bug report);
2. open a graph, then remove its group; and
3. open a graph, then remove all graphs and groups (File -> Remove all graphs and groups).

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• Change must be properly reviewed

Issue

• JDK-8262725: IGV: crash when removing all graphs in a group

Reviewers

• Christian Hagedorn (@chhagedorn - Reviewer) ⚠️ Review applies to 955a01c
• Richard Reingruber (@reinrich - Reviewer)

Reviewing

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$ git checkout pull/3540

Update a local copy of the PR:
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$ git pull https://git.openjdk.java.net/jdk pull/3540/head

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$ git pr checkout 3540

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[robcasloz]

/label remove build

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[mlbridge]

Webrevs

• 01: Full - Incremental (691b51cc)
• 00: Full (955a01c5)

[reinrich]

Hi Roberto,

thanks for providing the fix. I've built and tested it successfully as described in the bug report JDK-8262725. Your fix seems to solve this issue.

I'm still not able to remove the empty group virtual void java.lang.Object.<init>() as additional last step though.
Does this work for you?

Cheers, Richard.

[chhagedorn]

Looks good!

[openjdk]

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

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

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

8262725: IGV: crash when removing all graphs in a group

Make IGV close graph views when their groups are either removed or emptied, and
avoid faulty graph view computation for empty groups.

Reviewed-by: chagedorn, rrich

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 48 new commits pushed to the master branch:

• 79798c6: 8265136: ZGC: Expose GarbageCollectorMXBeans for both pauses and cycles
• f1d4ae6: 8263718: unused-result warning happens at os_linux.cpp
• 787908c: 8264221: Rewrite confusing stream API chain in SnippetMaps
• 142edd3: 8265152: jpackage cleanup fails on Windows with IOException deleting msi
• ab22407: 8265486: ProblemList javax/sound/midi/Sequencer/Recording.java on macosx-aarch64
• e0fd5fc: 8265028: JDWP debug agent thread lookup can be made faster
• 713483c: 8265373: Change to GCC 10.3 for building on Linux at Oracle
• 3990713: 8265463: ProblemList vmTestbase/vm/mlvm/mixed/stress/regression/b6969574/INDIFY_Test.java on Win-X64 -Xcomp
• 5b43b39: 8263154: [macos] DMG builds have finder errors
• 54cb388: 8252600: [JVMCI] remove mx configuration
• ... and 38 more: https://git.openjdk.java.net/jdk/compare/10ec38f80b83a5a692212a121df096d4b6c99a16...master

As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid this 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.

[robcasloz]

Looks good!

Thanks for reviewing, Christian!

[robcasloz]

thanks for providing the fix. I've built and tested it successfully as described in the bug report JDK-8262725. Your fix seems to solve this issue.

Thanks for testing, Richard!

I'm still not able to remove the empty group virtual void java.lang.Object.<init>() as additional last step though.
Does this work for you?

The preceding fix 8262462 should make this possible, however I see now that it wasn't merged into this PR. I merged it now (04c0b3c), could you please try again?

[reinrich]

The preceding fix 8262462 should make this possible, however I see now that it wasn't merged into this PR. I merged it now (04c0b3c), could you please try again?

Working nicely now! 👍

[reinrich]

I've tested the fix and found it solves the issues.
(Cannot really comment on the change itself as I'm not familiar with igv implementation / netbeans).

Thanks, Richard.

[robcasloz]

I've tested the fix and found it solves the issues.
(Cannot really comment on the change itself as I'm not familiar with igv implementation / netbeans).

Thanks, Richard.

Thanks for reviewing, Richard!

[robcasloz]

/summary
Make IGV close graph views when their groups are either removed or emptied, and
avoid faulty graph view computation for empty groups.

[openjdk]

@robcasloz Setting summary to:

Make IGV close graph views when their groups are either removed or emptied, and
avoid faulty graph view computation for empty groups.

[robcasloz]

/integrate

[openjdk]

@robcasloz Since your change was applied there have been 48 commits pushed to the master branch:

• 79798c6: 8265136: ZGC: Expose GarbageCollectorMXBeans for both pauses and cycles
• f1d4ae6: 8263718: unused-result warning happens at os_linux.cpp
• 787908c: 8264221: Rewrite confusing stream API chain in SnippetMaps
• 142edd3: 8265152: jpackage cleanup fails on Windows with IOException deleting msi
• ab22407: 8265486: ProblemList javax/sound/midi/Sequencer/Recording.java on macosx-aarch64
• e0fd5fc: 8265028: JDWP debug agent thread lookup can be made faster
• 713483c: 8265373: Change to GCC 10.3 for building on Linux at Oracle
• 3990713: 8265463: ProblemList vmTestbase/vm/mlvm/mixed/stress/regression/b6969574/INDIFY_Test.java on Win-X64 -Xcomp
• 5b43b39: 8263154: [macos] DMG builds have finder errors
• 54cb388: 8252600: [JVMCI] remove mx configuration
• ... and 38 more: https://git.openjdk.java.net/jdk/compare/10ec38f80b83a5a692212a121df096d4b6c99a16...master

Your commit was automatically rebased without conflicts.

Pushed as commit 5136643.

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