FOR-RELEASE: Windows related bugs

[Kim F. Storm]

Would someone please look at the following Windows specific problems
which preferably should be solved before the release.


** Markus Gritsch's report about Emacs looping on Windoze with the following
emacs file, and then reduce Emacs frame width to "something quite narrow":
        (setq-default truncate-lines t)
        (custom-set-variables
         '(hscroll-margin 20)
         '(hscroll-step 1)
        )


** TCP server processes do not work on Windows.

TCP/IP server processes created with `make-network-process' consume
excesive CPU on some Windows environments.  Usages of 50% and 100%
CPU time have been observed on different Window XP configurations.
Seems to be a problem in sys_select in w32proc.c.

In its current form, it sys_select says the socket is ready, so we
call server_accept_connection which again calls accept() which returns
-1 with errno == WSAEWOULDBLOCK (10035) indicating that there is no
pending connection to accept.

It seems that to fix this, w32 server sockets must use WSAAsyncSelect
+ FD_ACCEPT to request notifications of incoming connections...

-- 
Kim F. Storm <address@hidden> http://www.cua.dk