This is a minor JVM TI spec update for two timer functions `GetCurrentThreadCpuTime` and `GetThreadCpuTime` to allow implementations to support virtual threads.
The CSR is: [JDK-8302616](https://bugs.openjdk.org/browse/JDK-8302616): make JVMTI thread cpu time functions optional for virtual threads No testing is needed. ------------- Commit messages: - 8302615: make JVMTI thread cpu time functions optional for virtual threads Changes: https://git.openjdk.org/jdk/pull/12604/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12604&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8302615 Stats: 4 lines in 1 file changed: 2 ins; 0 del; 2 mod Patch: https://git.openjdk.org/jdk/pull/12604.diff Fetch: git fetch https://git.openjdk.org/jdk pull/12604/head:pull/12604 PR: https://git.openjdk.org/jdk/pull/12604
