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-rw-r--r--Assistant/Pushes.hs13
1 files changed, 13 insertions, 0 deletions
diff --git a/Assistant/Pushes.hs b/Assistant/Pushes.hs
index f411dda07..7842c1884 100644
--- a/Assistant/Pushes.hs
+++ b/Assistant/Pushes.hs
@@ -8,6 +8,7 @@
module Assistant.Pushes where
import Common.Annex
+import Utility.TSet
import Control.Concurrent.STM
import Data.Time.Clock
@@ -17,6 +18,9 @@ import qualified Data.Map as M
type PushMap = M.Map Remote UTCTime
type FailedPushMap = TMVar PushMap
+{- Used to notify about successful pushes. -}
+newtype PushNotifier = PushNotifier (TSet UUID)
+
{- The TMVar starts empty, and is left empty when there are no
- failed pushes. This way we can block until there are some failed pushes.
-}
@@ -44,3 +48,12 @@ changeFailedPushMap v a = atomically $
store m
| m == M.empty = noop
| otherwise = putTMVar v $! m
+
+newPushNotifier :: IO PushNotifier
+newPushNotifier = PushNotifier <$> newTSet
+
+notifyPush :: [UUID] -> PushNotifier -> IO ()
+notifyPush us (PushNotifier s) = putTSet s us
+
+waitPush :: PushNotifier -> IO [UUID]
+waitPush (PushNotifier s) = getTSet s