On Tue, 10 May 2022 04:00:29 GMT, Ioi Lam <ik...@openjdk.org> wrote:

> 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 ~ 5

This pull request has now been integrated.

Changeset: fcf49f42
Author:    Ioi Lam <ik...@openjdk.org>
URL:       
https://git.openjdk.java.net/jdk/commit/fcf49f42cef4ac3e50b3b480aecf6fa38cf5be00
Stats:     205 lines in 15 files changed: 3 ins; 153 del; 49 mod

8286441: Remove mode parameter from jdk.internal.perf.Perf.attach()

Reviewed-by: redestad, alanb

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

PR: https://git.openjdk.java.net/jdk/pull/8622

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