Describe the feature

We would like to expose a Dictionary javaThreadIds that maps eventIds to javaThreadIds in JfrReader.

Use Case

In order to implement profiling for the sentry-java sdk we had to vendor-in the JfrReader.java in order to get the JavaThread Ids, which we need to map them to running transactions.

If this feature would be implemented we could depend on the jfr-converter as-is without vendoring and customizing.

We can also supply a PR for this, if you'd like.

Proposed Solution

As part of the readThread method in JfrReader (

We would propose to track the javaThreads in a Dictionary just like the threads are tracked by their name, so we can map them from the event id.

Here's our version of the JfrReader for reference: https://github.com/getsentry/sentry-java/blob/main/sentry-async-profiler/src/main/java/io/sentry/asyncprofiler/vendor/asyncprofiler/jfr/JfrReader.java

Acknowledgements

• I may be able to implement this feature request
• This feature might incur a breaking change