[project @ 1999-08-27 08:33:06 by simonmar]

[ghc-hetmet.git] / ghc / lib / concurrent / SampleVar.lhs

diff --git a/ghc/lib/concurrent/SampleVar.lhs b/ghc/lib/concurrent/SampleVar.lhs
index 0854a29..75476b6 100644 (file)
--- a/ghc/lib/concurrent/SampleVar.lhs
+++ b/ghc/lib/concurrent/SampleVar.lhs
@@ -19,17 +19,17 @@ potentially, wakes up a blocked reader  (same as for @putMVar@ on empty @MVar@).
 \begin{code}
 module SampleVar
        (
-         SampleVar,        --:: type _ =
+         SampleVar,         -- :: type _ =
  
-        newEmptySampleVar, --:: IO (SampleVar a)
-         newSampleVar,      --:: a -> IO (SampleVar a)
-        emptySampleVar,    --:: SampleVar a -> IO ()
-        readSample,        --:: SampleVar a -> IO a
-        writeSample        --:: SampleVar a -> a -> IO ()
+        newEmptySampleVar, -- :: IO (SampleVar a)
+         newSampleVar,      -- :: a -> IO (SampleVar a)
+        emptySampleVar,    -- :: SampleVar a -> IO ()
+        readSampleVar,     -- :: SampleVar a -> IO a
+        writeSampleVar     -- :: SampleVar a -> a -> IO ()
 
        ) where
 
-import ConcBase
+import PrelConc
 
 
 type SampleVar a
@@ -63,8 +63,8 @@ emptySampleVar v = do
 -- filled => make empty and grab sample
 -- not filled => try to grab value, empty when read val.
 --
-readSample :: SampleVar a -> IO a
-readSample svar = do
+readSampleVar :: SampleVar a -> IO a
+readSampleVar svar = do
    (readers,val) <- takeMVar svar
    putMVar svar (readers-1,val)
    takeMVar val
@@ -73,8 +73,8 @@ readSample svar = do
 -- filled => overwrite
 -- not filled => fill, write val
 --
-writeSample :: SampleVar a -> a -> IO ()
-writeSample svar v = do
+writeSampleVar :: SampleVar a -> a -> IO ()
+writeSampleVar svar v = do
    (readers,val) <- takeMVar svar
    case readers of
      1 ->