8261336: IGV: enhance default filters

[robcasloz]

Redesign the filters shown by default in the "Filters" window:

• Add filters to color the graph by node category and execution frequency (if applicable), and to hide subgraphs or edges only by category. The category of a node can be one of {data, memory, control, mixed, other}, and is solely determined by its type. mixed nodes are those with a tuple type that has different categories, such as CallStaticJavaNode. The category of an edge is that of its source node.

• Instrument C2 to include the category and estimated execution frequency (if available) of each node in the graph dumps produced by -XX:PrintIdealGraphLevel=N (only in debug builds).

• Remove filters which depend on properties never emitted by C2 (e.g. 'Remove State') or which appear to be unused ('C2 Matcher Flags Coloring' and 'C2 Register Coloring'). Also remove the subsumed 'C2 Basic Coloring' filter.

• Merge 'C2 Remove Filter' and 'C2 Structural' into a single filter with a clearer name ('Simplify graph').

Screenshots

"Filters" window before (left) and after (right) the proposed change:

Default color scheme before (left) and after (right) the proposed change:

Examples of the new 'Color by execution frequency' filter:


Example of the new 'Hide X subgraph'' filters, where only the data subgraph is shown:

Example of the new 'Hide X edges' filters, where all nodes remain in their position but only the memory edges are shown:

Tested IGV manually on a few graphs. Tested C2 instrumentation by running hs-tier1 with -Xbatch -XX:PrintIdealGraphLevel=3 -XX:PrintIdealGraphFile=graph.xml on windows-x64, linux-x64, linux-aarch64, and macosx-x64 (all debug).

---

Progress

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

Issue

• JDK-8261336: IGV: enhance default filters

Reviewers

• Vladimir Ivanov (@iwanowww - Reviewer) ⚠️ Review applies to 3ed1e3d
• Christian Hagedorn (@chhagedorn - Reviewer)
• Tobias Hartmann (@TobiHartmann - Reviewer)

Contributors

• Christian Hagedorn <chagedorn@openjdk.org>

Download

$ git fetch https://git.openjdk.java.net/jdk pull/2499/head:pull/2499
$ git checkout pull/2499

[bridgekeeper]

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[openjdk]

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[mlbridge]

Webrevs

• 01: Full - Incremental (adcb918)
• 00: Full (3ed1e3d)

[iwanowww]

Very nice!

[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:

8261336: IGV: enhance default filters

Add filters to color and hide parts of the graph based on node categories or
estimated execution frequency, and simplify remaining filters.

Co-authored-by: Christian Hagedorn <chagedorn@openjdk.org>
Reviewed-by: vlivanov, chagedorn, thartmann

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 106 new commits pushed to the master branch:

• 3f8819c: 8261501: Shenandoah: reconsider heap statistics memory ordering
• 3cbd16d: 8259668: Make SubTasksDone use-once
• 219b115: 8261422: Adjust problematic String.format calls in jdk/internal/util/Preconditions.java outOfBoundsMessage
• cdc874d: 8261601: free memory in early return in Java_sun_nio_ch_sctp_SctpChannelImpl_receive0
• e2d52ae: 8261413: Shenandoah: Disable class-unloading in I-U mode
• 34ae7ae: 8261609: remove remnants of XML-driven builders
• 6badd22: 8261351: Create implementation for NSAccessibilityRadioButton protocol
• 849f4c0: 8260291: The case instruction is not visible in dark mode
• 2e610f5: 8260687: Inherited font size is smaller than expected when using StyleSheet to add styles
• 3882fda: 8260414: Remove unused set_single_threaded_mode() method in task executor
• ... and 96 more: https://git.openjdk.java.net/jdk/compare/db0ca2b9d40963e19a1d9c169e42463a4c2c8a07...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]

Very nice!

Thanks Vladimir!

[chhagedorn]

Otherwise, very nice improvement! I applied the patch and played around with it in the IGV. Everything seems to work as expected. I like the new default filters and the new colors for the new categories. That makes it much more useful.

[robcasloz]

Otherwise, very nice improvement! I applied the patch and played around with it in the IGV. Everything seems to work as expected. I like the new default filters and the new colors for the new categories. That makes it much more useful.

Thanks for reviewing Christian! I will have a look at your comments on Monday.

[robcasloz]

/contributor add @chhagedorn

[openjdk]

@robcasloz
Contributor Christian Hagedorn <chagedorn@openjdk.org> successfully added.

[robcasloz]

Otherwise, very nice improvement! I applied the patch and played around with it in the IGV. Everything seems to work as expected. I like the new default filters and the new colors for the new categories. That makes it much more useful.

Thanks for reviewing Christian! I will have a look at your comments on Monday.

I have addressed them now, please re-review.

[chhagedorn]

Thanks for addressing my suggestions. I tested it again - looks good!

[TobiHartmann]

This is awesome. Thanks a lot for taking the time to improve the IGV. Looks good to me!

[robcasloz]

Thanks Christian and Tobias for reviewing!

[robcasloz]

/summary
Add filters to color and hide parts of the graph based on node categories or
estimated execution frequency, and simplify remaining filters.

[openjdk]

@robcasloz Setting summary to:

Add filters to color and hide parts of the graph based on node categories or
estimated execution frequency, and simplify remaining filters.

[robcasloz]

/integrate

[openjdk]

@robcasloz Since your change was applied there have been 106 commits pushed to the master branch:

• 3f8819c: 8261501: Shenandoah: reconsider heap statistics memory ordering
• 3cbd16d: 8259668: Make SubTasksDone use-once
• 219b115: 8261422: Adjust problematic String.format calls in jdk/internal/util/Preconditions.java outOfBoundsMessage
• cdc874d: 8261601: free memory in early return in Java_sun_nio_ch_sctp_SctpChannelImpl_receive0
• e2d52ae: 8261413: Shenandoah: Disable class-unloading in I-U mode
• 34ae7ae: 8261609: remove remnants of XML-driven builders
• 6badd22: 8261351: Create implementation for NSAccessibilityRadioButton protocol
• 849f4c0: 8260291: The case instruction is not visible in dark mode
• 2e610f5: 8260687: Inherited font size is smaller than expected when using StyleSheet to add styles
• 3882fda: 8260414: Remove unused set_single_threaded_mode() method in task executor
• ... and 96 more: https://git.openjdk.java.net/jdk/compare/db0ca2b9d40963e19a1d9c169e42463a4c2c8a07...master

Your commit was automatically rebased without conflicts.

Pushed as commit 16bd7d3.

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