On Tue, 19 Jun 2018 09:42:35 +0300 Omer Zak <w...@zak.co.il> wrote: > For dependency management, you may want to use 'make' or modern
Hi Omer, While corresponding with someone offlist, I had another idea maybe as good as using make. I could make a customized installation of the process supervisor part of either the runit or s6 inits, or maybe even use just plain daemontools, to make sure apps don't run until apps upon which they depend have finished. So, for appC that depends on output from appA and appB, then the run script for appC would look something like the following: #!/bin/sh if appAnot_finished; then sleep 60 # prevent excessive polling elif appBnot_finished; then sleep 60 # prevent excessive polling else exec appC fi If every app expresses its immediate prerequisites that way, the whole thing will run very efficiently, and in many cases, in parallel where not prevented by unfinished prerequisites. Some more complexity would need to be added in order that appA and appB don't start again before the entire bucket brigade finishes. SteveT Steve Litt June 2018 featured book: Twenty Eight Tales of Troubleshooting http://www.troubleshooters.com/28 _______________________________________________ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
