RFR: 8351594: JFR: Rate-limited sampling of Java events

[Markus Grönlund]

On Fri, 30 May 2025 22:30:25 GMT, Erik Gahlin <egahlin at openjdk.org> wrote:

> Could I have review of an enhancement that adds rate-limited sampling to Java event, including five events in the JDK (SocketRead, SocketWrite, FileRead, FileWrite, and JavaExceptionThrow).
> 
> Testing: test/jdk/jdk/jfr
> 
> Thanks
> Erik

src/jdk.jfr/share/classes/jdk/jfr/internal/EventInstrumentation.java line 256:

> 254:             // }
> 255:             getEventConfiguration(codeBuilder);
> 256:             codeBuilder.aload(0);

Can issue a dup() here if you want to avoid the second aload(0).

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

PR Review Comment: https://git.openjdk.org/jdk/pull/25559#discussion_r2118257554