\begin{code}
eqStrPrefix :: Addr# -> ByteArray# -> Int# -> Bool
eqStrPrefix a# barr# len# =
- unsafePerformIO $ do
+ inlinePerformIO $ do
x <- memcmp_ba a# barr# (I# len#)
return (x == 0)
#ifdef UNUSED
eqCharStrPrefix :: Addr# -> Addr# -> Int# -> Bool
eqCharStrPrefix a1# a2# len# =
- unsafePerformIO $ do
+ inlinePerformIO $ do
x <- memcmp a1# a2# (I# len#)
return (x == 0)
#endif
eqStrPrefixBA :: ByteArray# -> ByteArray# -> Int# -> Int# -> Bool
eqStrPrefixBA b1# b2# start# len# =
- unsafePerformIO $ do
+ inlinePerformIO $ do
x <- memcmp_baoff_ba b2# (I# start#) b1# (I# len#)
return (x == 0)
#ifdef UNUSED
eqCharStrPrefixBA :: Addr# -> ByteArray# -> Int# -> Int# -> Bool
eqCharStrPrefixBA a# b2# start# len# =
- unsafePerformIO $ do
+ inlinePerformIO $ do
x <- memcmp_baoff b2# (I# start#) a# (I# len#)
return (x == 0)
#endif
\end{code}
\begin{code}
+-- Just like unsafePerformIO, but we inline it. This is safe when
+-- there are no side effects, and improves performance.
+{-# INLINE inlinePerformIO #-}
+inlinePerformIO :: IO a -> a
+inlinePerformIO (IO m) = case m realWorld# of (# _, r #) -> r
+
#if __GLASGOW_HASKELL__ <= 408
strLength (Ptr a#) = ghc_strlen a#
foreign import ccall unsafe "ghc_strlen"