On Fri, 11 Mar 2022 09:33:40 GMT, Andrew Haley <a...@openjdk.org> wrote:
> But we don't need to speculate. If thread-local variables are cheap on MacOS, > and there is no reason why they should be expensive, then we can stop > worrying and just use a thread-local variable for WX state. We can measure > how long it takes, and we only have to care about one platform, MacOS/AArch64. According to https://forums.swift.org/t/concurrencys-use-of-thread-local-variables/48654: "these accesses are just a move from a system register plus a load/store at a constant offset." ------------- PR: https://git.openjdk.java.net/jdk/pull/7727
