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Title: Instrument native threads by zhengyu123 · Pull Request #308 · DataDog/java-profiler · GitHub

Open Graph Title: Instrument native threads by zhengyu123 · Pull Request #308 · DataDog/java-profiler

X Title: Instrument native threads by zhengyu123 · Pull Request #308 · DataDog/java-profiler

Description: What does this PR do?: Instrument/profile native threads, the threads that are created/started outside of JVM, on hotspot/non-musl based JVM. Motivation: Enhance Java profiler to profiler native threads. Additional Notes: The feature is now only enabled for hotspot based JVM running on non-musl Linux platform. The reasons: A crash seen on aarch64/musl /JDK11. It might not be related to this change, but it is hard to confirm. Disable the feature for musl based Linux for now. J9 has issues to walk native only thread stack in release build, it shows only .no_java_frame while debug build shows correct stack. How to test the change?: Regular tests JDK tier1 tests with profiler agent. Although, there are failures, but match java-profiler main line. There are failures that are expected: HeapMonitor uses agent, which conflicts with profiler agent Compiler frame is not compatible with agent. For Datadog employees: If this PR touches code that signs or publishes builds or packages, or handles credentials of any kind, I've requested a review from @DataDog/security-design-and-guidance. This PR doesn't touch any of that. JIRA: PROF-11577 Unsure? Have a question? Request a review!

Open Graph Description: What does this PR do?: Instrument/profile native threads, the threads that are created/started outside of JVM, on hotspot/non-musl based JVM. Motivation: Enhance Java profiler to profiler native th...

X Description: What does this PR do?: Instrument/profile native threads, the threads that are created/started outside of JVM, on hotspot/non-musl based JVM. Motivation: Enhance Java profiler to profiler native th...

Opengraph URL: https://github.com/DataDog/java-profiler/pull/308

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74158e5 Instrument native threads zhengyu123 Dec 9, 2025 https://github.com/DataDog/java-profiler/pull/308/commits/74158e5a8e0cd499950503be9a6ee457df1fc318
07e480d Fix zhengyu123 Dec 9, 2025 https://github.com/DataDog/java-profiler/pull/308/commits/07e480d5e63d7b9f607feec3915b96886dbc7be6
db6afef J9 stack walk zhengyu123 Dec 10, 2025 https://github.com/DataDog/java-profiler/pull/308/commits/db6afef44aff8d1a6b85705db78489c26c46b0ba
ba40661 Cleanup zhengyu123 Dec 10, 2025 https://github.com/DataDog/java-profiler/pull/308/commits/ba406616fb9cd2f201fef6653bd32c32a33555c8
3ac6223 Fix bug zhengyu123 Dec 10, 2025 https://github.com/DataDog/java-profiler/pull/308/commits/3ac62231b5775fedc7d93c55f779ebba4606d27d
0bdded8 Set cstack=dwarf for NativeThreadTest (J9) zhengyu123 Dec 11, 2025 https://github.com/DataDog/java-profiler/pull/308/commits/0bdded8456d4068e3b40566c997e5f4e82e38e0c
48354c2 Hotspot/Zing only zhengyu123 Dec 11, 2025 https://github.com/DataDog/java-profiler/pull/308/commits/48354c241ed63f3a48491638c25b884904f090ce
617ab9a Fix zhengyu123 Dec 11, 2025 https://github.com/DataDog/java-profiler/pull/308/commits/617ab9a68891d2a35af082943bbe37c95fdc29ac
b445304 More fix zhengyu123 Dec 11, 2025 https://github.com/DataDog/java-profiler/pull/308/commits/b445304df191b6f062c87bef9939bd5328c21f8e
77aaedb Exclude J9 from NativeThreadTest zhengyu123 Dec 11, 2025 https://github.com/DataDog/java-profiler/pull/308/commits/77aaedbba04cc789c646942a6a7ff9198f794bf9
60d8350 Fix zhengyu123 Dec 11, 2025 https://github.com/DataDog/java-profiler/pull/308/commits/60d835009b39bf735b8d921ff533e2f336e28cfa
8cdabce Handle musl zhengyu123 Dec 11, 2025 https://github.com/DataDog/java-profiler/pull/308/commits/8cdabce30f6a9413ce05c1a0a33436c94a1b0a9c
36fe9b1 Exclude Musl from NativeThreadTest zhengyu123 Dec 11, 2025 https://github.com/DataDog/java-profiler/pull/308/commits/36fe9b122ab7d0beb1839e813725b4842fe309de
5d46345 cleanup zhengyu123 Dec 11, 2025 https://github.com/DataDog/java-profiler/pull/308/commits/5d46345b32cb44f24bc2729df52fd60c35df51b0
7774a2c Remove duplicated check zhengyu123 Dec 12, 2025 https://github.com/DataDog/java-profiler/pull/308/commits/7774a2c126166042ecccb054c48e343ece9cb893
826dfd5 Merge branch 'main' into zgu/inst_native_thread zhengyu123 Dec 12, 2025 https://github.com/DataDog/java-profiler/pull/308/commits/826dfd5b3c286e3da976504c177d2a239bc89cf1
566d77c Merge branch 'main' into zgu/inst_native_thread jbachorik Dec 15, 2025 https://github.com/DataDog/java-profiler/pull/308/commits/566d77c5a07bf88c0d41e886664d2a861c689124
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