From 40eb5aabed0ae52982a690be311177b2dea2a0bb Mon Sep 17 00:00:00 2001 From: Alec Theriault Date: Mon, 23 Jul 2018 13:23:35 -0700 Subject: Accumulate explicitly which modules to load for 'attachInstances' The old approach to fixing #469, while correct, consumes a lot of memory. We ended up with a HUGE 'GblRdrEnv' in 'ic_rn_gbl_env'. However, 'getNameToInstancesIndex' takes that environment and compresses it down to a much smaller 'ModuleSet'. Now, we compute that 'ModuleSet' explicitly as we process modules. That way we can just tell 'getNameToInstancesIndex' what modules to load (instead of it trying to compute that information from the interactive context). (cherry picked from commit 5c7c596c51d69b92164e9ba920157b36ce2b2ec1) --- haddock-api/src/Haddock/Interface/AttachInstances.hs | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) (limited to 'haddock-api/src/Haddock/Interface') diff --git a/haddock-api/src/Haddock/Interface/AttachInstances.hs b/haddock-api/src/Haddock/Interface/AttachInstances.hs index bf50ded3..2d72d117 100644 --- a/haddock-api/src/Haddock/Interface/AttachInstances.hs +++ b/haddock-api/src/Haddock/Interface/AttachInstances.hs @@ -1,4 +1,4 @@ -{-# LANGUAGE CPP, MagicHash #-} +{-# LANGUAGE CPP, MagicHash, BangPatterns #-} {-# LANGUAGE TypeFamilies #-} ----------------------------------------------------------------------------- -- | @@ -34,6 +34,7 @@ import FamInstEnv import FastString import GHC import InstEnv +import Module ( ModuleSet, moduleSetElts ) import MonadUtils (liftIO) import Name import NameEnv @@ -51,11 +52,13 @@ type Modules = Set.Set Module type ExportInfo = (ExportedNames, Modules) -- Also attaches fixities -attachInstances :: ExportInfo -> [Interface] -> InstIfaceMap -> Ghc [Interface] -attachInstances expInfo ifaces instIfaceMap = do - (_msgs, mb_index) <- getNameToInstancesIndex (map ifaceMod ifaces) +attachInstances :: ExportInfo -> [Interface] -> InstIfaceMap -> ModuleSet -> Ghc [Interface] +attachInstances expInfo ifaces instIfaceMap mods = do + (_msgs, mb_index) <- getNameToInstancesIndex (map ifaceMod ifaces) mods' mapM (attach $ fromMaybe emptyNameEnv mb_index) ifaces where + mods' = Just (moduleSetElts mods) + -- TODO: take an IfaceMap as input ifaceMap = Map.fromList [ (ifaceMod i, i) | i <- ifaces ] -- cgit v1.2.3