-- -----------------------------------------------------------------------------
--- $Id: CPUTime.hsc,v 1.4 2001/05/21 14:04:15 simonmar Exp $
+-- $Id: CPUTime.hsc,v 1.5 2001/05/29 11:38:14 rrt Exp $
--
-- (c) The University of Glasgow, 1995-2001
--
) where
import PrelMarshalAlloc
+import PrelMarshalUtils ( toBool )
import PrelCTypesISO
import PrelCTypes
import PrelStorable
#endif
#else /* _WIN32 */
-
-#error ToDo!!!
-
-#ifdef _WIN32
-/* 100ns units per sec, really */
-#define NS_PER_SEC 10000000LL
-#define FT2usecs(ll,ft) \
- (ll)=(ft).dwHighDateTime; \
- (ll) <<= 32; \
- (ll) |= (ft).dwLowDateTime;
-
-#endif
-
-/* cygwin32 or mingw32 version */
-StgInt
-getCPUTime(StgByteArray cpuStruct)
-{
- FILETIME creationTime, exitTime, kernelTime, userTime;
- StgInt *cpu=(StgInt *)cpuStruct;
- unsigned long long uT, kT;
-
- /* ToDo: pin down elapsed times to just the OS thread(s) that
- are evaluating/managing Haskell code.
- */
- if (!GetProcessTimes (GetCurrentProcess(), &creationTime,
- &exitTime, &kernelTime, &userTime)) {
- /* Probably on a Win95 box..*/
- cpu[0]=0;
- cpu[1]=0;
- cpu[2]=0;
- cpu[3]=0;
- return 1;
- }
-
- FT2usecs(uT, userTime);
- FT2usecs(kT, kernelTime);
-
- cpu[0] = (unsigned int)(uT / NS_PER_SEC);
- cpu[1] = (unsigned int)((uT - cpu[0] * NS_PER_SEC) * 100);
- cpu[2] = (unsigned int)(kT / NS_PER_SEC);
- cpu[3] = (unsigned int)((kT - cpu[2] * NS_PER_SEC) * 100);
- return 1;
-}
-#endif /* WIN32 */
+ allocaBytes (#const sizeof(FILETIME)) $ \ p_creationTime -> do
+ allocaBytes (#const sizeof(FILETIME)) $ \ p_exitTime -> do
+ allocaBytes (#const sizeof(FILETIME)) $ \ p_kernelTime -> do
+ allocaBytes (#const sizeof(FILETIME)) $ \ p_userTime -> do
+ pid <- getCurrentProcess
+ ok <- getProcessTimes pid p_creationTime p_exitTime p_kernelTime p_userTime
+ if toBool ok then do
+ ut <- ft2usecs p_userTime
+ kt <- ft2usecs p_kernelTime
+ return (fromIntegral (ut + kt))
+ else return 0
+ where ft2usecs ft = do
+ high <- (#peek FILETIME,dwHighDateTime) ft :: IO CLong
+ low <- (#peek FILETIME,dwLowDateTime) ft :: IO CLong
+ return (high * (2^32) + low)
+
+ -- ToDo: pin down elapsed times to just the OS thread(s) that
+ -- are evaluating/managing Haskell code.
+
+type FILETIME = ()
+type HANDLE = ()
+-- need proper Haskell names (initial lower-case character)
+foreign import "GetCurrentProcess" unsafe getCurrentProcess :: IO (Ptr HANDLE)
+foreign import "GetProcessTimes" unsafe getProcessTimes :: Ptr HANDLE -> Ptr FILETIME -> Ptr FILETIME -> Ptr FILETIME -> Ptr FILETIME -> IO CInt
+
+#endif /* not _WIN32 */
cpuTimePrecision :: Integer
cpuTimePrecision = round ((1000000000000::Integer) % fromIntegral (clockTicks))