[project @ 2003-02-18 20:39:56 by panne]

[ghc-base.git] / Control / Concurrent.hs

diff --git a/Control/Concurrent.hs b/Control/Concurrent.hs
index d41b462..965adeb 100644 (file)
--- a/Control/Concurrent.hs
+++ b/Control/Concurrent.hs
@@ -20,12 +20,16 @@ module Control.Concurrent (
 
        -- * Basic concurrency operations
 
+#ifndef __HUGS__
         ThreadId,
        myThreadId,
+#endif
 
        forkIO,
+#ifndef __HUGS__
        killThread,
        throwTo,
+#endif
 
        -- * Scheduling
 
@@ -52,8 +56,10 @@ module Control.Concurrent (
        module Control.Concurrent.SampleVar,
 
        -- * Merging of streams
+#ifndef __HUGS__
        mergeIO,                -- :: [a]   -> [a] -> IO [a]
        nmergeIO,               -- :: [[a]] -> IO [a]
+#endif
        -- $merge
 
        -- * GHC's implementation of concurrency
@@ -84,8 +90,7 @@ import GHC.Base
 #endif
 
 #ifdef __HUGS__
-import IOExts ( unsafeInterleaveIO )
-import ConcBase
+import Hugs.ConcBase
 #endif
 
 import Control.Concurrent.MVar
@@ -147,12 +152,15 @@ functions blocks only the thread making the call.
 -- cmp_thread in the RTS.
 
 #ifdef __GLASGOW_HASKELL__
-foreign import ccall unsafe "cmp_thread" cmp_thread :: Addr# -> Addr# -> Int
+id2TSO :: ThreadId -> ThreadId#
+id2TSO (ThreadId t) = t
+
+foreign import ccall unsafe "cmp_thread" cmp_thread :: ThreadId# -> ThreadId# -> Int
 -- Returns -1, 0, 1
 
 cmpThread :: ThreadId -> ThreadId -> Ordering
-cmpThread (ThreadId t1) (ThreadId t2) = 
-   case cmp_thread (unsafeCoerce# t1) (unsafeCoerce# t2) of
+cmpThread t1 t2 = 
+   case cmp_thread (id2TSO t1) (id2TSO t2) of
       -1 -> LT
       0  -> EQ
       _  -> GT -- must be 1
@@ -166,12 +174,12 @@ instance Eq ThreadId where
 instance Ord ThreadId where
    compare = cmpThread
 
-foreign import ccall unsafe "rts_getThreadId" getThreadId :: Addr# -> Int
+foreign import ccall unsafe "rts_getThreadId" getThreadId :: ThreadId# -> Int
 
 instance Show ThreadId where
-   showsPrec d (ThreadId t) = 
+   showsPrec d t = 
        showString "ThreadId " . 
-        showsPrec d (getThreadId (unsafeCoerce# t))
+        showsPrec d (getThreadId (id2TSO t))
 
 {- |
 This sparks off a new thread to run the 'IO' computation passed as the
@@ -201,7 +209,7 @@ real_handler ex =
 
 #endif /* __GLASGOW_HASKELL__ */
 
-
+#ifndef __HUGS__
 max_buff_size :: Int
 max_buff_size = 1
 
@@ -273,6 +281,7 @@ nmergeIO lss
     return val
   where
     mapIO f xs = sequence (map f xs)
+#endif /* __HUGS__ */
 
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