[project @ 2002-02-12 15:17:13 by simonmar]

[ghc-hetmet.git] / ghc / lib / std / CPUTime.hsc

diff --git a/ghc/lib/std/CPUTime.hsc b/ghc/lib/std/CPUTime.hsc
deleted file mode 100644 (file)
index c34a3cb..0000000
--- a/ghc/lib/std/CPUTime.hsc
+++ /dev/null
@@ -1,122 +0,0 @@
--- -----------------------------------------------------------------------------
--- $Id: CPUTime.hsc,v 1.13 2001/09/06 15:15:23 sewardj Exp $
---
--- (c) The University of Glasgow, 1995-2001
---
-
-module CPUTime 
-       (
-         getCPUTime,       -- :: IO Integer
-        cpuTimePrecision  -- :: Integer
-        ) where
-
-import PrelMarshalAlloc
-import PrelMarshalUtils ( toBool )
-import PrelCTypesISO
-import PrelCTypes
-import PrelStorable
-import PrelPtr
-
-import PrelBase                ( Int(..) )
-import PrelByteArr     ( ByteArray(..), newIntArray )
-import PrelArrExtra     ( unsafeFreezeByteArray )
-import PrelIOBase      ( IOException(..) )
-import Ratio
-
-#include "HsStd.h"
-
--- -----------------------------------------------------------------------------
--- Computation `getCPUTime' returns the number of picoseconds CPU time
--- used by the current program.  The precision of this result is
--- implementation-dependent.
-
--- 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.
-
-getCPUTime :: IO Integer
-getCPUTime = do
-
-#if !defined(mingw32_TARGET_OS) && !defined(cygwin32_TARGET_OS)
--- getrusage() is right royal pain to deal with when targetting multiple
--- versions of Solaris, since some versions supply it in libc (2.3 and 2.5),
--- while 2.4 has got it in libucb (I wouldn't be too surprised if it was back
--- again in libucb in 2.6..)
---
--- Avoid the problem by resorting to times() instead.
---
-#if defined(HAVE_GETRUSAGE) && ! irix_TARGET_OS && ! solaris2_TARGET_OS
-    allocaBytes (#const sizeof(struct rusage)) $ \ p_rusage -> do
-    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
-    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 = ()
-foreign import unsafe getrusage :: CInt -> Ptr CRUsage -> IO CInt
-#else
-# if defined(HAVE_TIMES)
-    allocaBytes (#const sizeof(struct tms)) $ \ p_tms -> do
-    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 (( (fromIntegral u_ticks + fromIntegral s_ticks) * 1000000000000) 
-                       `div` fromIntegral clockTicks)
-
-type CTms = ()
-foreign import unsafe times :: Ptr CTms -> IO CClock
-# else
-    ioException (IOError Nothing UnsupportedOperation 
-                        "getCPUTime"
-                        "can't get CPU time"
-                        Nothing)
-# endif
-#endif
-
-#else /* 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 <- ft2psecs p_userTime
-      kt <- ft2psecs p_kernelTime
-      return (fromIntegral (ut + kt))
-     else return 0
-  where ft2psecs ft = do
-          high <- (#peek FILETIME,dwHighDateTime) ft :: IO CLong
-          low <- (#peek FILETIME,dwLowDateTime) ft :: IO CLong
-          return (((fromIntegral high) * (2^32) + (fromIntegral low)) * 100000)
-
-    -- 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))
-
-clockTicks :: Int
-clockTicks =
-#if defined(CLK_TCK)
-    (#const CLK_TCK)
-#else
-    unsafePerformIO (sysconf (#const _SC_CLK_TCK) >>= return . fromIntegral)
-foreign import unsafe sysconf :: CInt -> IO CLong
-#endif