Integrated: 8352251: Implement JEP 518: JFR Cooperative Sampling

[Markus Grönlund]

On Fri, 28 Mar 2025 15:38:59 GMT, Markus Grönlund <mgronlun at openjdk.org> wrote:

> Greetings,
> 
> This is the implementation of JEP [JDK-8350338 Cooperative JFR Sampling](https://bugs.openjdk.org/browse/JDK-8350338).
> 
> Implementations in this change set are provided and have been tested on the following platforms:
> 
> - windows-x64
> - windows-x64-debug
> - linux-x64
> - linux-x64-debug
> - macosx-x64
> - macosx-x64-debug
> - linux-aarch64
> - linux-aarch64-debug
> - macosx-aarch64
> - macosx-aarch64-debug
> 
> Testing: tier1-6, jdk_jfr, stress testing.
> 
> Platform porters note:
> Some platform-specific code needs to be provided, mainly in the interpreter. Take a look at the following files for changes:
> 
> - src/hotspot/cpu/x86/frame_x86.cpp
> - src/hotspot/cpu/x86/interp_masm_x86.cpp
> - src/hotspot/cpu/x86/interp_masm_x86.hpp
> - src/hotspot/cpu/x86/javaFrameAnchor_x86.hpp
> - src/hotspot/cpu/x86/macroAssembler_x86.cpp
> - src/hotspot/cpu/x86/macroAssembler_x86.hpp
> - src/hotspot/cpu/x86/templateInterpreterGenerator_x86.cpp
> - src/hotspot/cpu/x86/templateTable_x86.cpp
> - src/hotspot/os_cpu/linux_x86/javaThread_linux_x86.hpp
> 
> Thanks
> Markus

This pull request has now been integrated.

Changeset: bbceab07
Author:    Markus Grönlund <mgronlun at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/bbceab072555d5e2f5d3e99ae07a5ca5e909d7dc
Stats:     3841 lines in 114 files changed: 2453 ins; 1017 del; 371 mod

8352251: Implement JEP 518: JFR Cooperative Sampling

Co-authored-by: Aleksey Shipilev <shade at openjdk.org>
Co-authored-by: Erik Österlund <eosterlund at openjdk.org>
Co-authored-by: Boris Ulasevich <bulasevich at openjdk.org>
Co-authored-by: Patricio Chilano Mateo <pchilanomate at openjdk.org>
Co-authored-by: Martin Doerr <mdoerr at openjdk.org>
Co-authored-by: Fei Yang <fyang at openjdk.org>
Co-authored-by: Amit Kumar <amitkumar at openjdk.org>
Reviewed-by: eosterlund, egahlin

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PR: https://git.openjdk.org/jdk/pull/24296