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[WIP] Virtual thread support for JVMTI extension functions.

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thallium

jdk22 OpenJDK jdk_vector_byte64_j9 passed but failed

8

https://openj9-jenkins.osuosl.org/job/Test_openjdk22_j9_sanity.openjdk_aarch64_mac_Personal_testList_2/1 jdk_vector_byte64_j9_0 ``` 16:16:59 #INFO: AOT header validation failed: AsyncCompilation feature mismatch. 16:16:59 16:16:59 #INFO: StartTime: Jan 06 08:16:59 2024 16:16:59 #INFO: Free Physical Memory: 6362 MB estimated 16:16:59 #INFO:...

pshipton

Avoid unsteady states during JVMTI Suspend and Resume All VThreads

6

For VThreads, the `mount` and `unmount` phases are unsteady states since a `J9VMThread` is modified during these phases. JVMTI `[Suspend|Resume]AllVirtualThreads` acquire exclusive VM access. This can pause the virtual threads...

babsingh

jdk22 OpenJDK StackWalker/CallerSensitiveMethod - Expected class jdk.test.CallerSensitiveTest but got [class java.util.CSM]

7

https://openj9-jenkins.osuosl.org/job/Test_openjdk22_j9_sanity.openjdk_aarch64_mac_Personal_testList_0/1/ jdk_lang java/lang/StackWalker/CallerSensitiveMethod/Main.java ``` 16:04:08 ERROR: Expected class jdk.test.CallerSensitiveTest but got [class java.util.CSM] 16:04:08 java.lang.UnsupportedOperationException: Stack walker configured with DROP_METHOD_INFO 16:04:08 at java.base/java.lang.StackWalker$StackFrameImpl.ensureMethodInfo(StackWalker.java:431) 16:04:08 at java.base/java.lang.StackWalker$StackFrameImpl.toStackTraceElement(StackWalker.java:482) 16:04:08 at java.base/java.lang.StackWalker$StackFrameImpl.toString(StackWalker.java:512) 16:04:08...

pshipton

cmdLineTester_criu_nonPortableRestore_FAILED test time out

9

Failure link ------------ From [an internal build](https://hyc-runtimes-jenkins.swg-devops.com/job/Test_openjdk17_j9_sanity.functional_ppc64le_linux_testList_0/414/)(`rhel7lert-1-9`): ``` java version "17.0.8" 2023-07-18 IBM Semeru Runtime Certified Edition 17.0.8.0-rc1 (build 17.0.8+7) Eclipse OpenJ9 VM 17.0.8.0-rc1 (build v0.40.0-release-b681a676a, JRE 17 Linux ppc64le-64-Bit...

JasonFengJ9

OpenJDK java/lang/Thread/virtual/stress/GetStackTraceALotWhenPinned Invalid JIT return address ASSERTION FAILED swalk.c:1629: ((0 ))

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https://openj9-jenkins.osuosl.org/job/Test_openjdk22_j9_sanity.openjdk_x86-64_mac_Nightly_testList_1/1 jdk_lang_1 java/lang/Thread/virtual/stress/GetStackTraceALotWhenPinned.java#id0 https://openj9-artifactory.osuosl.org/artifactory/ci-openj9/Test/Test_openjdk22_j9_sanity.openjdk_x86-64_mac_Nightly_testList_1/1/openjdk_test_output.tar.gz ``` 21:44:10 *** Invalid JIT return address 48000000D024848B in 00007000087988C0 21:44:10 21:44:10 02:42:41.635 0x7f81f2854900 j9vm.249 * ** ASSERTION FAILED ** at /Users/jenkins/workspace/Build_JDK22_x86-64_mac_Nightly/openj9/runtime/vm/swalk.c:1629: ((0 )) ```

pshipton

JDK21 jdk_foreign_0_FAILED java/foreign/loaderLookup/TestLoaderLookup.java NPE at java.base/jdk.internal.foreign.abi.AbstractLinker.stripNames(AbstractLinker.java:278)

6

Failure link ------------ From [an internal build](https://openj9-jenkins.osuosl.org/job/Test_openjdk21_j9_sanity.openjdk_aarch64_linux_Nightly_testList_1/50/)(`cent8-aarch64-2`): ``` openjdk version "21-internal" 2023-09-19 OpenJDK Runtime Environment (build 21-internal-adhoc.****.BuildJDK21aarch64linuxNightly) Eclipse OpenJ9 VM (build master-a3120a18c45, JRE 21 Linux aarch64-64-Bit Compressed References 20230906_56 (JIT...

JasonFengJ9

JDK21 java/foreign/loaderLookup/TestLoaderLookup.java Segmentation error vmState=0x00051aff

14

Failure link ------------ From [an internal build](https://openj9-jenkins.osuosl.org/job/Test_openjdk21_j9_sanity.openjdk_aarch64_linux_Nightly_testList_2/47/)(`ub20-aarch64-4`): ``` openjdk version "21-internal" 2023-09-19 OpenJDK Runtime Environment (build 21-internal-adhoc.****.BuildJDK21aarch64linuxNightly) Eclipse OpenJ9 VM (build master-c46b26096a8, JRE 21 Linux aarch64-64-Bit Compressed References 20230901_53 (JIT...

JasonFengJ9

OpenJ9 Outputs Incorrect Results with JIT Compiler

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Java -version output -------------------- ```bash openjdk version "1.8.0_402-internal" OpenJDK Runtime Environment (build 1.8.0_402-internal-user_2024_01_31_16_41-b00) Eclipse OpenJ9 VM (build master-40a4d38b2, JRE 1.8.0 Linux amd64-64-Bit Compressed References 20240131_000000 (JIT enabled, AOT enabled) OpenJ9...

Qeryu

Inconsistent cmake settings for TLH_PREFETCH_FTA

20

There are flags `OMR_GC_TLH_PREFETCH_FTA` and `J9VM_GC_TLH_PREFETCH_FTA`. Settings of these flags in cmake files are complicated, and look inconsistent for some platforms. runtime/cmake/caches/common.cmake enables `J9VM_GC_TLH_PREFETCH_FTA`. The file does not have an...

knn-k