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new software in contrib
- To: firstname.lastname@example.org
- Subject: new software in contrib
- From: email@example.com (David Neves)
- Date: Wed, 4 Mar 92 16:04:50 CST
I put "rcs.lisp" in the contrib directory of cambridge.apple.com. It is a
quick hack that I put together to manage the editing of project files by
multiple people. Project files are kept on a central server machine and
users copy those files to their own machine to edit.
On any large project there is a danger of 2 people editing the same file at
the same time. Most likely one person's changes will be lost. This
software allows someone to "lock" a file so that no one else can edit it.
When the user is finished editing the file they can "unlock" the file so
that others can edit it.
I experimented with a couple of ways of "locking" a file but the one I
ended up with was software based and does not use any operating system
features. When a file is locked its name is saved in a common file. When
something else tries to edit the same file (and they are using this
software to grab it) they get a warning message that the file is locked.
We used it quite a bit last year and found it very useful. It is not
industrial strength software but we haven't had an major problems with it.
I would appreciate any notification of bugs found.