The `mode` parameter for ` jdk.internal.perf.Perf.attach()` has never supported the value `"rw"` since the source code was imported to the openjdk repo more than 15 years ago. In fact HotSpot throws `IllegalArgumentException` when such a mode is specified.
It's unlikely such a mode will be required for future enhancements. Support for `"rw"` is removed. The "mode" parameter is also removed, since now `"r"` is the only supported mode. I also cleaned up related code in the JDK and HotSpot. Testing: - Passed tiers 1 and 2 - Tiers 3, 4, 5 are in progress ------------- Commit messages: - 8286441: Remove mode parameter from jdk.internal.perf.Perf.attach() Changes: https://git.openjdk.java.net/jdk/pull/8622/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=8622&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8286441 Stats: 193 lines in 15 files changed: 0 ins; 144 del; 49 mod Patch: https://git.openjdk.java.net/jdk/pull/8622.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/8622/head:pull/8622 PR: https://git.openjdk.java.net/jdk/pull/8622
