8318124: JFR: Rewrite instrumentation to use Class-File API

[egahlin]

Hi,

Could I have a review of an enhancement that replaces the use of ASM with the new Class-File API. This change only deals with bytecode that writes event data into buffers. Bytecode transformations carried out by classes in jdk.jfr.internal.intrument package are kept as is. Plan is to try to replace those with events in java.base.

To simplify the review process, I have tried to keep the code in the classes EventInstrumentation and EventClassBuilder similar to what existed before. Further refactorizations may happen at a later stage.

Testing: tier1-3 + jdk/jdk/jfr

Thanks
Erik

---

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Issue

• JDK-8318124: JFR: Rewrite instrumentation to use Class-File API (Enhancement - P3)

Reviewers

• Markus Grönlund (@mgronlun - Reviewer)

Reviewing

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[openjdk]

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

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

8318124: JFR: Rewrite instrumentation to use Class-File API

Reviewed-by: mgronlun

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At the time when this comment was updated there had been 59 new commits pushed to the master branch:

• 6fc3514: 8318363: Foreign benchmarks fail to build on some platforms
• 31ef400: 8318183: C2: VM may crash after hitting node limit
• 4e77b3c: 8315974: Make fields final in 'com.sun.crypto.provider' package
• 8dd8096: 8317886: Add @sealedGraph to ByteBuffer
• 9843c97: 8318365: Test runtime/cds/appcds/sharedStrings/InternSharedString.java fails after JDK-8311538
• 7c80cb2: 8309966: Enhanced TLS connections
• adca97b: 8286503: Enhance security classes
• 195c9b2: 8297856: Improve handling of Bidi characters
• 072d64c: 8296581: Better system proxy support
• 83b6a12: 8316967: Correct the scope of vmtimer in UnregisteredClasses::load_class
• ... and 49 more: https://git.openjdk.org/jdk/compare/01ea1eff66e43f106640ecfd19fadf2c8245a1ad...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.

[egahlin]

/integrate

[openjdk]

Going to push as commit 69c0ae2.
Since your change was applied there have been 130 commits pushed to the master branch:

• c1aeac7: 8318445: More broken bailout chains in C2
• d888b26: 8318071: IgnoreUnrecognizedVMOptions flag still causes failure in ArchiveHeapTestClass
• bea2d48: 8312475: org.jline.util.PumpReader signed byte problem
• 9f767aa: 8318109: Writing JFR records while a CHT has taken its lock asserts in rank checking
• bd22d23: 8318027: Support alternative name to jdk.internal.vm.compiler
• c2efd77: 8295795: hsdis does not build with binutils 2.39+
• 99de9bb: 8317807: JAVA_FLAGS removed from jtreg running in JDK-8317039
• 704c6ea: 8303525: Refactor/cleanup open/test/jdk/javax/rmi/ssl/SSLSocketParametersTest.java
• 7c0a828: 8318649: G1: Remove unimplemented HeapRegionRemSet::add_code_root_locked
• ff5c5b6: 8318643: +UseTransparentHugePages must enable +UseLargePages
• ... and 120 more: https://git.openjdk.org/jdk/compare/01ea1eff66e43f106640ecfd19fadf2c8245a1ad...master

Your commit was automatically rebased without conflicts.

[openjdk]

@egahlin Pushed as commit 69c0ae2.

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