+{-# LANGUAGE CPP, NondecreasingIndentation, ForeignFunctionInterface #-}
+
-----------------------------------------------------------------------------
-- |
-- Module : System.CPUTime
#endif
#ifdef __GLASGOW_HASKELL__
-import Foreign
+import Foreign hiding (unsafePerformIO)
import Foreign.C
+#if !defined(CLK_TCK)
+import System.IO.Unsafe (unsafePerformIO)
+#endif
+
+#include "HsBaseConfig.h"
+
+-- For _SC_CLK_TCK
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+-- For struct rusage
+#if !defined(mingw32_HOST_OS) && !defined(irix_HOST_OS)
+# if HAVE_SYS_RESOURCE_H
+# include <sys/resource.h>
+# endif
+#endif
-#include "HsBase.h"
+-- For FILETIME etc. on Windows
+#if HAVE_WINDOWS_H
+#include <windows.h>
#endif
+-- for CLK_TCK
+#if HAVE_TIME_H
+#include <time.h>
+#endif
+
+-- for struct tms
+#if HAVE_SYS_TIMES_H
+#include <sys/times.h>
+#endif
+
+#endif
+
+#if !defined(mingw32_HOST_OS) && !defined(cygwin32_HOST_OS)
realToInteger :: Real a => a -> Integer
realToInteger ct = round (realToFrac ct :: Double)
-- CTime, CClock, CUShort etc are in Real but not Fractional,
-- so we must convert to Double before we can round it
+#endif
#ifdef __GLASGOW_HASKELL__
-- -----------------------------------------------------------------------------
--
#if defined(HAVE_GETRUSAGE) && ! irix_HOST_OS && ! solaris2_HOST_OS
allocaBytes (#const sizeof(struct rusage)) $ \ p_rusage -> do
- getrusage (#const RUSAGE_SELF) p_rusage
+ throwErrnoIfMinus1_ "getrusage" $ getrusage (#const RUSAGE_SELF) p_rusage
let ru_utime = (#ptr struct rusage, ru_utime) p_rusage
let ru_stime = (#ptr struct rusage, ru_stime) p_rusage
u_sec <- (#peek struct timeval,tv_sec) ru_utime :: IO CTime
- u_usec <- (#peek struct timeval,tv_usec) ru_utime :: IO CTime
+ u_usec <- (#peek struct timeval,tv_usec) ru_utime :: IO CSUSeconds
s_sec <- (#peek struct timeval,tv_sec) ru_stime :: IO CTime
- s_usec <- (#peek struct timeval,tv_usec) ru_stime :: IO CTime
+ s_usec <- (#peek struct timeval,tv_usec) ru_stime :: IO CSUSeconds
return ((realToInteger u_sec * 1000000 + realToInteger u_usec +
realToInteger s_sec * 1000000 + realToInteger s_usec)
* 1000000)
#else
# if defined(HAVE_TIMES)
allocaBytes (#const sizeof(struct tms)) $ \ p_tms -> do
- times p_tms
+ _ <- times p_tms
u_ticks <- (#peek struct tms,tms_utime) p_tms :: IO CClock
s_ticks <- (#peek struct tms,tms_stime) p_tms :: IO CClock
return (( (realToInteger u_ticks + realToInteger s_ticks) * 1000000000000)
low <- (#peek FILETIME,dwLowDateTime) ft :: IO Word32
-- Convert 100-ns units to picosecs (10^-12)
-- => multiply by 10^5.
- return (((fromIntegral high) * (2^32) + (fromIntegral low)) * 100000)
+ return (((fromIntegral high) * (2^(32::Int)) + (fromIntegral low)) * 100000)
-- ToDo: pin down elapsed times to just the OS thread(s) that
-- are evaluating/managing Haskell code.