[Bug 31882] Many multithreaded gui apps randomly deadlock in winex11 driver surface section (arial32.exe, Aquanox, Mahaa demo, Total Commander)

http://bugs.winehq.org/show_bug.cgi?id=31882

--- Comment #49 from Henri Verbeet  2012-10-27 01:17:47 CDT ---
Created attachment 42273
  --> http://bugs.winehq.org/attachment.cgi?id=42273
patch

Actually, the attached patch seems fairly good at avoiding the issue. I'm not
quite familiar enough with all the code to judge how proper this is, but the
basic idea is to avoid making X11 calls until message handler has had a chance
to finish.