Hello community, here is the log from the commit of package ghc-auto-update for openSUSE:Factory checked in at 2016-05-17 17:14:26 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Comparing /work/SRC/openSUSE:Factory/ghc-auto-update (Old) and /work/SRC/openSUSE:Factory/.ghc-auto-update.new (New) ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Package is "ghc-auto-update" Changes: -------- --- /work/SRC/openSUSE:Factory/ghc-auto-update/ghc-auto-update.changes 2016-04-30 23:30:12.000000000 +0200 +++ /work/SRC/openSUSE:Factory/.ghc-auto-update.new/ghc-auto-update.changes 2016-05-17 17:14:27.000000000 +0200 @@ -1,0 +2,6 @@ +Wed May 11 15:05:19 UTC 2016 - mimi...@gmail.com + +- update to 0.1.4 +* Provide updateActionModify API in AutoUpdate + +------------------------------------------------------------------- Old: ---- auto-update-0.1.3.1.tar.gz New: ---- auto-update-0.1.4.tar.gz ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Other differences: ------------------ ++++++ ghc-auto-update.spec ++++++ --- /var/tmp/diff_new_pack.drAdqL/_old 2016-05-17 17:14:28.000000000 +0200 +++ /var/tmp/diff_new_pack.drAdqL/_new 2016-05-17 17:14:28.000000000 +0200 @@ -19,7 +19,7 @@ %global pkg_name auto-update Name: ghc-auto-update -Version: 0.1.3.1 +Version: 0.1.4 Release: 0 Summary: Efficiently run periodic, on-demand actions License: MIT ++++++ auto-update-0.1.3.1.tar.gz -> auto-update-0.1.4.tar.gz ++++++ diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn' '--exclude=.svnignore' old/auto-update-0.1.3.1/ChangeLog.md new/auto-update-0.1.4/ChangeLog.md --- old/auto-update-0.1.3.1/ChangeLog.md 2016-04-25 15:26:28.000000000 +0200 +++ new/auto-update-0.1.4/ChangeLog.md 2016-05-09 07:43:44.000000000 +0200 @@ -1,3 +1,7 @@ +## 0.1.4 + +* Provide updateActionModify API in AutoUpdate [#547](https://github.com/yesodweb/wai/pull/547) + ## 0.1.3.1 * Doc improvements diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn' '--exclude=.svnignore' old/auto-update-0.1.3.1/Control/AutoUpdate.hs new/auto-update-0.1.4/Control/AutoUpdate.hs --- old/auto-update-0.1.3.1/Control/AutoUpdate.hs 2016-04-24 15:33:08.000000000 +0200 +++ new/auto-update-0.1.4/Control/AutoUpdate.hs 2016-05-09 07:43:44.000000000 +0200 @@ -1,3 +1,4 @@ +{-# LANGUAGE CPP #-} -- | In a multithreaded environment, running actions on a regularly scheduled -- background thread can dramatically improve performance. -- For example, web servers need to return the current time with each HTTP response. @@ -37,12 +38,17 @@ , updateSpawnThreshold -- * Creation , mkAutoUpdate + , mkAutoUpdateWithModify ) where +#if __GLASGOW_HASKELL__ < 709 +import Control.Applicative ((<*>)) +#endif import Control.Concurrent (forkIO, threadDelay) import Control.Concurrent.MVar (newEmptyMVar, putMVar, readMVar, takeMVar, tryPutMVar) -import Control.Exception (SomeException, catch, throw, mask_, try) +import Control.Exception (SomeException, catch, mask_, throw, + try) import Control.Monad (void) import Data.IORef (newIORef, readIORef, writeIORef) @@ -97,7 +103,18 @@ -- -- @since 0.1.0 mkAutoUpdate :: UpdateSettings a -> IO (IO a) -mkAutoUpdate us = do +mkAutoUpdate us = mkAutoUpdateHelper us Nothing + +-- | Generate an action which will either read from an automatically +-- updated value, or run the update action in the current thread if +-- the first time or the provided modify action after that. +-- +-- @since 0.1.4 +mkAutoUpdateWithModify :: UpdateSettings a -> (a -> IO a) -> IO (IO a) +mkAutoUpdateWithModify us f = mkAutoUpdateHelper us (Just f) + +mkAutoUpdateHelper :: UpdateSettings a -> Maybe (a -> IO a) -> IO (IO a) +mkAutoUpdateHelper us updateActionModify = do -- A baton to tell the worker thread to generate a new value. needsRunning <- newEmptyMVar @@ -140,12 +157,12 @@ -- This infinite loop makes up out worker thread. It takes an a -- responseVar value where the next value should be putMVar'ed to for -- the benefit of any requesters currently blocked on it. - let loop responseVar = do + let loop responseVar maybea = do -- block until a value is actually needed takeMVar needsRunning -- new value requested, so run the updateAction - a <- catchSome $ updateAction us + a <- catchSome $ maybe (updateAction us) id (updateActionModify <*> maybea) -- we got a new value, update currRef and lastValue writeIORef currRef $ Right a @@ -160,10 +177,10 @@ -- variable. responseVar' <- newEmptyMVar writeIORef currRef $ Left responseVar' - loop responseVar' + loop responseVar' (Just a) -- Kick off the loop, with the initial responseVar0 variable. - loop responseVar0 + loop responseVar0 Nothing return $ do mval <- readIORef currRef diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn' '--exclude=.svnignore' old/auto-update-0.1.3.1/auto-update.cabal new/auto-update-0.1.4/auto-update.cabal --- old/auto-update-0.1.3.1/auto-update.cabal 2016-04-25 15:26:32.000000000 +0200 +++ new/auto-update-0.1.4/auto-update.cabal 2016-05-09 07:43:44.000000000 +0200 @@ -1,5 +1,5 @@ name: auto-update -version: 0.1.3.1 +version: 0.1.4 synopsis: Efficiently run periodic, on-demand actions description: API docs and the README are available at <http://www.stackage.org/package/auto-update>. homepage: https://github.com/yesodweb/wai
