On Apr 19, 2012, at 11:48 AM, Jim Weirich wrote: > > On Apr 19, 2012, at 10:34 AM, Hongli Lai wrote: > >> Have you also looked at http://drake.rubyforge.org? How does your >> implementation differ from his? > > Michael can correct me if I'm wrong, but the -j option just limits the number > of concurrent tasks used to service the "multitask" task targets. Multitask > is an existing rake facility that the -j option makes more usable.
That is exactly right. It only affects Multitask. Some additional interesting tidbits: There is a queue of blocks that is a class member of Multitask which all Multitask instances use to queue their prerequisites. So, your thread's call to MultiTask#invoke_prerequisites may end up processing prerequisites for another's call to MultiTask#invoke_prerequisites. No matter though, your call won't return until all your prerequisites are completed. > > Drake actually changes the semantics of the regular rake tasks so that they > run in parallel. Thank you for that clarification. I'd only assumed that, given my rather cursory look, and it's nice to have it confirmed. _ michael _______________________________________________ Rake-devel mailing list [email protected] http://rubyforge.org/mailman/listinfo/rake-devel
