RFR: 8342818: Implement CPU Time Profiling for JFR [v17]

[Markus Grönlund]

On Thu, 7 Nov 2024 15:11:00 GMT, Johannes Bechberger <jbechberger at openjdk.org> wrote:

>> This is the code for the [JEP draft: CPU Time based profiling for JFR].
>
> Johannes Bechberger has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Don't treat stackTrace attribute specially for CPUTimeSamples

AArch64:

A fatal error has been detected by the Java Runtime Environment:

SIGILL (0x4) at pc=0x0000ffff76288fc8, pid=3163616, tid=3163757
Java VM: Java HotSpot(TM) 64-Bit Server VM (24-internal-2024-11-07-1636009.markus.gronlund.jdkcopy, mixed mode, tiered, compressed oops, compressed class ptrs, g1 gc, linux-aarch64)

Problematic frame:
J 44547 c1 java.lang.invoke.LambdaForm$DMH+0x0000ffff40d0a3a8.invokeStatic(Ljava/lang/Object;Ljava/lang/Object;)V java.base at 24-internal (14 bytes) @ 0x0000ffff76288fc8 [0x0000ffff76289100+0xfffffffffffffec8]

Current thread (0x0000ffff0412fbc0):  JfrCPUTimeThreadSampler "JFR CPU Time Thread Sampler" [id=3163757, stack(0x0000fffedc1fd000,0x0000fffedc3fb000) (2040K)]

Stack: [0x0000fffedc1fd000,0x0000fffedc3fb000],  sp=0x0000fffedc3f9510,  free space=2033k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
J 44547 c1 java.lang.invoke.LambdaForm$DMH+0x0000ffff40d0a3a8.invokeStatic(Ljava/lang/Object;Ljava/lang/Object;)V java.base at 24-internal (14 bytes) @ 0x0000ffff76288fc8 [0x0000ffff76289100+0xfffffffffffffec8]
V  [libjvm.so+0x816ac8]  JFRRecordSampledThreadCallback::call()+0x18  (jfrCPUTimeThreadSampler.cpp:531)
V  [libjvm.so+0xd2e658]  ThreadCrashProtection::call(CrashProtectionCallback&)+0x68  (threadCrashProtection_posix.cpp:49)
V  [libjvm.so+0x815070]  JfrCPUTimeThreadSampler::process_trace_queue()+0x290  (jfrCPUTimeThreadSampler.cpp:571)
V  [libjvm.so+0x815324]  JfrCPUTimeThreadSampler::run()+0x114  (jfrCPUTimeThreadSampler.cpp:511)
V  [libjvm.so+0xd2e2c8]  Thread::call_run()+0xa8  (thread.cpp:234)
V  [libjvm.so+0xb9cf50]  thread_native_entry(Thread*)+0xdc  (os_linux.cpp:858)
C  [libpthread.so.0+0x7950]  start_thread+0x190

-------------

PR Comment: https://git.openjdk.org/jdk/pull/20752#issuecomment-2464855727