-- Module : System.CPUTime
-- Copyright : (c) The University of Glasgow 2001
-- License : BSD-style (see the file libraries/core/LICENSE)
-- Module : System.CPUTime
-- Copyright : (c) The University of Glasgow 2001
-- License : BSD-style (see the file libraries/core/LICENSE)
-- The standard CPUTime library.
--
-----------------------------------------------------------------------------
-- The standard CPUTime library.
--
-----------------------------------------------------------------------------
let ru_utime = (#ptr struct rusage, ru_utime) p_rusage
let ru_stime = (#ptr struct rusage, ru_stime) 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 CLong
- u_usec <- (#peek struct timeval,tv_usec) ru_utime :: IO CLong
- s_sec <- (#peek struct timeval,tv_sec) ru_stime :: IO CLong
- s_usec <- (#peek struct timeval,tv_usec) ru_stime :: IO CLong
+ u_sec <- (#peek struct timeval,tv_sec) ru_utime :: IO CTime
+ u_usec <- (#peek struct timeval,tv_usec) ru_utime :: IO CTime
+ s_sec <- (#peek struct timeval,tv_sec) ru_stime :: IO CTime
+ s_usec <- (#peek struct timeval,tv_usec) ru_stime :: IO CTime
return ((fromIntegral u_sec * 1000000 + fromIntegral u_usec +
fromIntegral s_sec * 1000000 + fromIntegral s_usec)
* 1000000)
type CRUsage = ()
return ((fromIntegral u_sec * 1000000 + fromIntegral u_usec +
fromIntegral s_sec * 1000000 + fromIntegral s_usec)
* 1000000)
type CRUsage = ()
u_ticks <- (#peek struct tms,tms_utime) p_tms :: IO CClock
s_ticks <- (#peek struct tms,tms_stime) p_tms :: IO CClock
return (( (fromIntegral u_ticks + fromIntegral s_ticks) * 1000000000000)
u_ticks <- (#peek struct tms,tms_utime) p_tms :: IO CClock
s_ticks <- (#peek struct tms,tms_stime) p_tms :: IO CClock
return (( (fromIntegral u_ticks + fromIntegral s_ticks) * 1000000000000)
-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
+foreign import ccall unsafe "GetCurrentProcess" getCurrentProcess :: IO (Ptr HANDLE)
+foreign import ccall unsafe "GetProcessTimes" getProcessTimes :: Ptr HANDLE -> Ptr FILETIME -> Ptr FILETIME -> Ptr FILETIME -> Ptr FILETIME -> IO CInt
+#endif /* __GLASGOW_HASKELL__ */
+
+-- |The 'cpuTimePrecision' constant is the smallest measurable difference
+-- in CPU time that the implementation can record, and is given as an
+-- integral number of picoseconds.
cpuTimePrecision :: Integer
cpuTimePrecision = round ((1000000000000::Integer) % fromIntegral (clockTicks))
cpuTimePrecision :: Integer
cpuTimePrecision = round ((1000000000000::Integer) % fromIntegral (clockTicks))