lock free dirstate - prototype

[Alexander Belchenko]

Robert Collins пишет:
> On Tue, 2009-09-29 at 14:25 +0100, Martin Pool wrote:
> Unlinking of files - on win32 a reader prevents unlinking of a file that
> its reading. That means we have to unlink at some arbitrary later time
> than the point where the file stopped being logically interesting.

It's not quite true. Using Win32 API you can have file opened to read but in the same time allowed
to delete by another process. Mercurial has implementation of this, btw.