On Thu, 18 Feb 2021 07:03:07 GMT, Andrey Turbanov <github.com+741251+turban...@openjdk.org> wrote:
>> Hello @turbanoff, do you mean why read it twice - once here and once inside >> the `synchronized` block? > > Yes. Once here and once inside `synchronized` block. > Reading `volatile` fields cost _something_ on some architectures, so I think > we could optimize it a bit. Hello @turbanoff, the double read is necessary to correctly avoid any race conditions and is a typical strategy used in cases like these. I am not aware of any other alternate more performant strategy, for code like this. ------------- PR: https://git.openjdk.java.net/jdk/pull/2601
