31 Aug
2022
31 Aug
'22
10:22 a.m.
Based on [a patch](https://www.winehq.org/mailman3/hyperkitty/list/wine-devel(a)winehq.org/mess...) by Jinoh Kang (@iamahuman) from February 2022. I removed the need for the event object and implemented fast paths for Linux. On Linux 4.16+ `membarrier(MEMBARRIER_CMD_GLOBAL_EXPEDITED, ...)` is used. On x86 Linux <= 4.15 `madvise(..., MADV_DONTNEED)` is used, which sends IPIs to all cores causing them to do a memory barrier. On non-x86 Linux 4.3+ `membarrier(MEMBARRIER_CMD_SHARED, ...)` is used. On Linux <= 4.2 and on other platforms the fallback path using APCs is used. -- https://gitlab.winehq.org/wine/wine/-/merge_requests/741