On Wed, 9 Sep 2020 13:04:38 GMT, Aleksey Shipilev <sh...@openjdk.org> wrote:
>> Updated PR. > > Now I wonder (after reading the discussion), why not > `UNSAFE.storeStoreFence()`? I am basically okay with either, given > they currently map to the same thing. But it seems that semantically only > `storeStoreFence` is really needed here. Scratch that. Hotspot does `MemBar_Release` for final stores, low-level Java code is better do the same: https://github.com/openjdk/jdk/blob/master/src/hotspot/share/opto/parse1.cpp#L1005 It deserves a separate follow-up to homogenize the uses of `Unsafe.storeStoreFence` and `Unsafe.storeFence` in other places in JDK. ------------- PR: https://git.openjdk.java.net/jdk/pull/94
