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split commands into 3 phases

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I feel like I just leveled up in Haskell.
This commit is contained in:
Joey Hess 2010-10-25 15:44:27 -04:00
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doc/todo/parallel_possibilities.mdwn
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@ -5,9 +5,8 @@ heavily and mostly runs other git commands, maybe not a whole lot.
Anyway, each git-annex command is broken down into a series of independant
actions, which has some potential for parallelism.
Probably they would need to be split further. Each action currently has 3
distinct phases, basically "check", "do", and "record". If the check action
returned a do action that returned a record action, then it could easily
make sense to parallelize the check actions and start on the do actions
(which probably won't parallelize well) while they are still being
generated, and possibly parallelize the record actions at the end.
Each action has 3 distinct phases, basically "check", "perform", and
"cleanup". The perform actions are not parellizable; the cleanup may be,
and the check should be easily parallelizable, although they may access the
disk or run minor git query commands, so would probably not want to run
too many of them at once.