Thomas Weidenmueller wrote:
Created the named pipes with the FILE_FLAG_OVERLAPPED flag, otherwise
the call to ConnectNamedPipe() will block the server thread if no
connection can be established, which causes the rpc server to dead-lock
during startup.
Hi Thomas,
I have a patch that converts rpcrt4 over to using overlapped I/O, but I
didn't submit it because the performance on Wine is horrible. When using
overlapped I/O we have to perform several more server calls than when
using non-overlapped I/O. Also, I think that this patch is incorrect
because if you want to make the pipe overlapped then you have to fix up
all of the ReadFile calls to take an OVERLAPPED structure.
I'll shortly be starting a rewrite of part of the RPC server so that we
can support more transports and I'll bear this bug in mind when I do it
and I'll try to fix it. The solution I come to will probably involve a
worker thread doing the ConnectNamedPipe.
--
Rob Shearman
