8269022: Put evacuation failure string directly into gc=info log message

[tschatzl]

Hi all,

can I have reviews for this change that puts the evacuation failure marker from a separate log line into the GC timing message. I.e. instead of

Pause Young (Normal) (G1 Evacuation Pause)
To-space exhausted

into

Pause Young (Normal) (Evacuation Failure) (G1 Evacuation Pause) 

This is imho easier to read, better to process and less wasteful with log space.

Testing: tier1, gc/g1 tests

---

Progress

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Issue

• JDK-8269022: Put evacuation failure string directly into gc=info log message

Reviewers

• Ivan Walulya (@walulyai - Committer) ⚠️ Review applies to 298eb0a
• Leo Korinth (@lkorinth - Committer) ⚠️ Review applies to 004c0a9
• Kim Barrett (@kimbarrett - Reviewer)

Reviewing

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[bridgekeeper]

👋 Welcome back tschatzl! 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]

@tschatzl The following label will be automatically applied to this pull request:

• hotspot-gc

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[mlbridge]

Webrevs

• 04: Full - Incremental (6183e9c9)
• 03: Full - Incremental (90ca1244)
• 02: Full - Incremental (004c0a9c)
• 01: Full - Incremental (5aa3574f)
• 00: Full (298eb0a9)

[lkorinth]

I have some comments, but otherwise it looks good to me.

[lkorinth]

Still looks good to me!

[albertnetymk]

Regarding Pause Young (Normal) (Evacuation Failure) (G1 Evacuation Pause), I interpret the three pairs of parens as:

1. (<gc pause kind, deciding what should be done in this pause>)
2. (<sth unexpected happened, deviating from the original plan>)
3. (<what initiates this pause>)

2 occurs strictly later than 1&3, so a more natural order is

Pause Young (Normal) (G1 Evacuation Pause) (Evacuation Failure).

This way, the original structure (meaning of the first two pairs of parens) could be preserved in all cases. When sth unexpected happens, the log is only appended, leaving the "conceptually existing" part intact.

Ofc, this is very subjective; just my 2 cents. (Merely a comment, not a review. I am fine with the current change.)

[tschatzl]

I am aware of this and this has come up before. The problem is that the order of adding these strings is fixed by the execution order of the scoped objects. My initial attempt to fix this was too messy, but 'll look into this again, maybe I can find some better way.

[tschatzl]

@albertnetymk : fixed :)

[kimbarrett]

Looks good.

I agreed with Albert's comment about the order of the annotations. I'm glad you found a (nice, not kludgy) way to fix that.

[openjdk]

@tschatzl 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:

8269022: Put evacuation failure string directly into gc=info log message

Reviewed-by: iwalulya, lkorinth, kbarrett

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 6 new commits pushed to the master branch:

• 4dfcf53: 8269935: ProblemList runtime/jni/checked/TestPrimitiveArrayCriticalWithBadParam.java on windows
• 1578979: 8269917: Insert missing commas in copyrights in java.net
• 326b2e1: 8253119: Remove the legacy PlainSocketImpl and PlainDatagramSocketImpl implementation
• f485171: 8269692: sun.net.httpserver.ServerImpl::createContext should throw IAE
• 16aa8cb: 8269697: JNI_GetPrimitiveArrayCritical() should not accept object array
• e47803a: 8266310: deadlock between System.loadLibrary and JNI FindClass loading another class

Please see this link for an up-to-date comparison between the source branch of this pull request and the master branch.
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.

[tschatzl]

Thanks @albertnetymk @walulyai @lkorinth @kimbarrett for your reviews.

/integrate

[openjdk]

Going to push as commit a685011.
Since your change was applied there have been 21 commits pushed to the master branch:

• 72530ef: 8269574: C2: Avoid redundant uncommon traps in GraphKit::builtin_throw() for JVMTI exception events
• 3d090e7: 8267625: AARCH64: typo in LIR_Assembler::emit_profile_type
• a9e2010: 8268425: Show decimal nid of OSThread instead of hex format one
• 01c29d8: 8266407: remove jdk.internal.javac.PreviewFeature.Feature.SEALED_CLASSES
• 7a4f08a: Merge
• 0d1cd3a: 8269825: [TESTBUG] Missing testing for x86 KNL platforms
• e0c130f: 8269955: ProblemList compiler/vectorapi/VectorCastShape[64|128]Test.java tests on x86
• 1166ef2: 8268966: AArch64: 'bad AD file' in some vector conversion tests
• 3a69024: 8225667: Clarify the behavior of System::gc w.r.t. reference processing
• 2b20778: 8269568: JVM crashes when running VectorMask query tests
• ... and 11 more: https://git.openjdk.java.net/jdk/compare/20eba35515073c4daf1fa8ac78a37196ea196690...master

Your commit was automatically rebased without conflicts.

[openjdk]

@tschatzl Pushed as commit a685011.

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