🚀 go-pugleaf

In article <3064@cirrusl.UUCP> Rahul Dhesi <dhesi@cirrus.COM> writes:
>Sun's locking daemons have never worked correctly whenever I have tried
>them.  I finally decided that it would be better to rely on the
>standard reliable UNIX method:  create a lock file.  I used this
>successfully for a while.  Then discovered with a shock that NFS has no
>mechanism for ensuring exclusive creation of a file even if the O_EXCL
>flag is given to open().  NFS does make symbolic links links correctly.
>I think it may even make hard links correctly.  The following algorithm
>assumes that hard links are correctly created atomically.

If hardlinks are assumed to be made correctly (which I suspect they are
indeed, why shouldn't they?), why are you then going through all this
trouble with the symlink (MUTEX)?   Why not use one hardlink to the lockfile?
--
Sincerely,                 berg@marvin.e17.physik.tu-muenchen.de
           Stephen R. van den Berg.
"I code it in 5 min, optimize it in 90 min, because it's so well optimized:
it runs in only 5 min.  Actually, most of the time I optimize programs."