File: Concurrency.hs

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{- Copyright 2016 Joey Hess <id@joeyh.name>
 -
 - Licensed under the GNU AGPL version 3 or higher.
 -}

module Types.Concurrency where

import Utility.PartialPrelude

-- Note that Concurrent 1 is not the same as NonConcurrent;
-- the former specifies 1 job of each particular kind, but there can be
-- more than one kind of job running concurrently.
data Concurrency = NonConcurrent | Concurrent Int | ConcurrentPerCpu
	deriving (Eq)

parseConcurrency :: String -> Maybe Concurrency
parseConcurrency "cpus" = Just ConcurrentPerCpu
parseConcurrency "cpu" = Just ConcurrentPerCpu
parseConcurrency s = Concurrent <$> readish s

-- Concurrency can be configured at the command line or by git config.
data ConcurrencySetting
	= ConcurrencyCmdLine Concurrency
	| ConcurrencyGitConfig Concurrency
	deriving (Eq)