On Thursday, 19 April 2012 at 00:07:45 UTC, Sean Kelly wrote:
On Apr 18, 2012, at 4:06 PM, Andrew Lauritzen wrote:
I'm still interested in if anyone has any suggested
workarounds or experience using Win32 fibers in D2 as well.
The x32 Windows code should be pretty well tested. If this is
using the x64 code though, that's all quite new. I'll give
this a try when I find some time, but can't suggest a
workaround offhand. It almost sounds alignment-related, which
could be tricky.
Been following D for a while now, and fibers right in the std lib
are a huge draw for me. I'm not an expert on them, but on the
topic of x64 fibers, I have some exposure to them trying to
contribute x64 windows support to bsnes, which uses its own
home-grown fiber/coroutine system.
Out of curiosity I took a look at the D fiber context code, and
noticed that the x64 windows version doesn't seem to save the
XMM6-15 registers (unless I missed it), which is something I
forgot to do also. MSDN indicates that they are nonvolatile,
which could potentially cause problems for FP heavy code on x64
windows.
Not sure if I should file a bug for this, as I haven't tried an
x64 windows fiber in D yet to make sure it's actually a problem
first.
