tree 4d5f7eda3ee0a53e0fe15291ccbbfb523ede25f4
parent 2631f58df889f9ce727a7db6aa4f8158f951c180
author Googler <chiwang@google.com> 1713962094 -0700
committer Copybara-Service <copybara-worker@google.com> 1713962174 -0700

Use `refCount` based method for virtual lane.

... so no [de]registration is needed for `Profiler` to work with virtual thread.

`Profiler` now assumes virtual thread has name pattern like `prefix%d` and tries to extract the prefix into thread local when the first time it needs a virtual lane.

Remove the `synchronized` block since it harms the performance.

PiperOrigin-RevId: 627697201
Change-Id: I35b48d1b30b8d95e397b559546c47aa5b60c7c40