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| author | Joe Rayhawk <jrayhawk@omgwallhack.org> | 2010-01-10 23:29:59 -0800 |
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| committer | Joe Rayhawk <jrayhawk@omgwallhack.org> | 2010-01-10 23:29:59 -0800 |
| commit | f7afd949c9e2cc4c5f199e3db6398d1be7fcfea9 (patch) | |
| tree | 9386d3a152b280fd1c432643757514fe43b8032f | |
| parent | abc86bec4e00e6b341d88e7140ddb23a643742f4 (diff) | |
| download | jrayhawk-f7afd949c9e2cc4c5f199e3db6398d1be7fcfea9.tar.gz jrayhawk-f7afd949c9e2cc4c5f199e3db6398d1be7fcfea9.zip | |
Notes: lockfiles: Clarifying criticisms of pure shell approach
| -rw-r--r-- | notes/lockfiles.mdwn | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/notes/lockfiles.mdwn b/notes/lockfiles.mdwn index 7db4ad8..39eecda 100644 --- a/notes/lockfiles.mdwn +++ b/notes/lockfiles.mdwn @@ -3,8 +3,9 @@ ## Random example shell scripts out on the web All locks need a read/compare/delete/write transaction that is not practical -with the shell alone. Imagine a `sleep` statement in front of the -`rm stalelock` operation and what that would do to other processes. +with the shell alone. Imagine a `sleep` statement in front of or inbetween the +`mv lock stalelock` `unlink stalelock` `write lock` operations and what that +would do to other processes. Process name comparison won't work very well as scripts aren't always executed under their own name or even as their own process. For example, |