Huge might be the wrong word, but I've definitely been frustrated that it's missing. Java has a standard library class that works well enough for whole-file advisory (or mandatory if you're on Windows, I suppose) locks on a local filesystem. It's eminently helpful for excluding a second process from starting with a lock that the OS will clean up for you if/when your process terminates for whatever reason.
smf(5) can get you part of the way there, but not if you're (say) writing some system bits that you need to deploy on platforms in addition to SunOS. Plus, if you can avoid depending on any not-just-pure-JS modules then you can deploy one tree onto all of your platforms without additional build steps, C++ compile/ABI issues, etc.
smf(5) can get you part of the way there, but not if you're (say) writing some system bits that you need to deploy on platforms in addition to SunOS. Plus, if you can avoid depending on any not-just-pure-JS modules then you can deploy one tree onto all of your platforms without additional build steps, C++ compile/ABI issues, etc.