[Vm-dev] [OpenSmalltalk/opensmalltalk-vm] d5373c: Use MemoryBarrier
on Win64
GitHub
noreply at github.com
Tue Jul 26 07:01:47 UTC 2016
Branch: refs/heads/krono/win32-fixes
Home: https://github.com/OpenSmalltalk/opensmalltalk-vm
Commit: d5373c34ae8f0814a6435d2d9de6c367fb4c4b63
https://github.com/OpenSmalltalk/opensmalltalk-vm/commit/d5373c34ae8f0814a6435d2d9de6c367fb4c4b63
Author: Tobias Pape <tobias at netshed.de>
Date: 2016-07-26 (Tue, 26 Jul 2016)
Changed paths:
M platforms/Cross/vm/sqMemoryFence.h
Log Message:
-----------
Use MemoryBarrier on Win64
We leave the 32 bit version, tho. The `MemoryBarrier` expands to a
`__faststorefence` on x86_64, which compiles to
lock or DWORD PTR [rsp], ebp
The 32bit code we use is quite similar but avoids the ebp access:
lock add [esp], 0
whereas the x86 `MemoryBarrier` is a more costly `xchg [...], eax`.
Commit: 5da712ffc5af51b67c28400507b2d436681538fc
https://github.com/OpenSmalltalk/opensmalltalk-vm/commit/5da712ffc5af51b67c28400507b2d436681538fc
Author: Tobias Pape <tobias at netshed.de>
Date: 2016-07-26 (Tue, 26 Jul 2016)
Changed paths:
M platforms/win32/vm/sqWin32Main.c
Log Message:
-----------
Make sure DWORDs are printed correctly
Compare: https://github.com/OpenSmalltalk/opensmalltalk-vm/compare/03c0ef741a5d...5da712ffc5af
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