+{-# OPTIONS -optc-DNON_POSIX_SOURCE #-}
+-- JRS 010117: we had to say NON_POSIX_SOURCE to get the resulting .hc
+-- to compile on sparc-solaris. Blargh.
+
-- -----------------------------------------------------------------------------
--- $Id: Time.hsc,v 1.2 2001/01/12 16:40:07 simonmar Exp $
+-- $Id: Time.hsc,v 1.12 2001/04/25 14:36:48 simonmar Exp $
--
-- (c) The University of Glasgow, 1995-2001
--
, Day(..)
, ClockTime(..) -- non-standard, lib. report gives this as abstract
+ -- instance Eq, Ord
+ -- instance Show (non-standard)
+
, getClockTime
, TimeDiff(..)
# define POSIX_4D9 1
# include <sys/timers.h>
# endif
-#elif defined(HAVE_TIME_H)
+#endif
+
+#if defined(HAVE_TIME_H)
# include <time.h>
#endif
-#ifdef HAVE_WINDOWS_H
-#include <windows.h>
+#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
+#endif
+
+#ifdef HAVE_SYS_TIMEB_H
#include <sys/timeb.h>
#endif
+#ifdef HAVE_WINDOWS_H
+#include <windows.h>
+#endif
+
import Ix
import Locale
Integer -- Picoseconds with the specified second
deriving (Eq, Ord)
--- When a @ClockTime@ is shown, it is converted to a string of the form
--- @"Mon Nov 28 21:45:41 GMT 1994"@.
-
--- For now, we are restricted to roughly:
--- Fri Dec 13 20:45:52 1901 through Tue Jan 19 03:14:07 2038, because
--- we use the C library routines based on 32 bit integers.
+-- When a ClockTime is shown, it is converted to a CalendarTime in the current
+-- timezone and then printed. FIXME: This is arguably wrong, since we can't
+-- get the current timezone without being in the IO monad.
instance Show ClockTime where
- showsPrec _ (TOD secs _nsec) =
- showString $ unsafePerformIO $ do
- withObject (fromIntegral secs :: CTime) $ \ p_timer -> do
- p_tm <- localtime p_timer -- can't fail, according to POSIX
- allocaBytes 64 $ \ p_buf -> do -- big enough for error message
- r <- strftime p_buf 50 "%a %b %d %H:%M:%S %Z %Y"## p_tm
- if r == 0
- then return "ClockTime.show{Time}: internal error"
- else peekCString p_buf
-
+ showsPrec _ t = showString (calendarTimeToString
+ (unsafePerformIO (toCalendarTime t)))
showList = showList__ (showsPrec 0)
{-
-- -----------------------------------------------------------------------------
-- getClockTime returns the current time in its internal representation.
-#if defined(_WIN32) && !defined(cygwin32_TARGET_OS)
- --
- -- ftime() as implemented by cygwin (in B20.1) is
- -- not right, so stay away & use time() there instead.
- --
-getClockTime = do
- allocaBytes (#const sizeof(struct timeb)) $ \ p_timeb -> do
- ftime p_timeb
- sec <- (#peek struct timeb,time) p_timeb :: IO CTime
- msec <- (#peek struct timeb,millitime) p_timeb :: IO CUShort
- return (TOD (fromIntegral sec) (fromIntegral msec * 1000{-ToDo: correct???-}))
-
-#elif defined(HAVE_GETTIMEOFDAY)
+#if HAVE_GETTIMEOFDAY
getClockTime = do
allocaBytes (#const sizeof(struct timeval)) $ \ p_timeval -> do
throwErrnoIfMinus1_ "getClockTime" $ gettimeofday p_timeval nullPtr
usec <- (#peek struct timeval,tv_usec) p_timeval :: IO CLong
return (TOD (fromIntegral sec) ((fromIntegral usec) * 1000))
+#elif HAVE_FTIME
+getClockTime = do
+ allocaBytes (#const sizeof(struct timeb)) $ \ p_timeb -> do
+ ftime p_timeb
+ sec <- (#peek struct timeb,time) p_timeb :: IO CTime
+ msec <- (#peek struct timeb,millitm) p_timeb :: IO CUShort
+ return (TOD (fromIntegral sec) (fromIntegral msec * 1000{-ToDo: correct???-}))
+
#else /* use POSIX time() */
getClockTime = do
secs <- time nullPtr -- can't fail, according to POSIX
addToClockTime (TimeDiff year mon day hour min sec psec)
(TOD c_sec c_psec) =
let
- sec_diff = fromInt sec + 60 * fromInt min + 3600 * fromInt hour + 24 * 3600 * fromInt day
+ sec_diff = toInteger sec +
+ 60 * toInteger min +
+ 3600 * toInteger hour +
+ 24 * 3600 * toInteger day
cal = toUTCTime (TOD (c_sec + sec_diff) (c_psec + psec))
-- FIXME! ^^^^
new_mon = fromEnum (ctMonth cal) + r_mon
}
-- -----------------------------------------------------------------------------
--- toCalendarTime t converts t to a local time, modified by
--- the current timezone and daylight savings time settings. toUTCTime
--- t converts t into UTC time. toClockTime l converts l into the
--- corresponding internal ClockTime. The wday, yday, tzname, and isdst fields
--- are ignored.
+-- How do we deal with timezones on this architecture?
+
+-- The POSIX way to do it is through the global variable tzname[].
+-- But that's crap, so we do it The BSD Way if we can: namely use the
+-- tm_zone and tm_gmtoff fields of struct tm, if they're available.
+zone :: Ptr CTm -> IO (Ptr CChar)
+gmtoff :: Ptr CTm -> IO CLong
#if HAVE_TM_ZONE
-zone x = (#peek struct tm,tm_zone) x :: IO (Ptr CChar)
-gmtoff x = (#peek struct tm,tm_gmtoff) x :: IO CLong
+zone x = (#peek struct tm,tm_zone) x
+gmtoff x = (#peek struct tm,tm_gmtoff) x
#else /* ! HAVE_TM_ZONE */
# if HAVE_TZNAME || _WIN32
# endif
# ifndef mingw32_TARGET_OS
foreign label tzname :: Ptr (Ptr CChar)
+# else
+foreign import "ghcTimezone" unsafe timezone :: Ptr CLong
+foreign import "ghcTzname" unsafe tzname :: Ptr (Ptr CChar)
+# def inline long *ghcTimezone(void) { return &_timezone; }
+# def inline char **ghcTzname(void) { return _tzname; }
# endif
zone x = do
dst <- (#peek struct tm,tm_isdst) x
- if dst then peekArray tzname 1 else peekArray tzname 0
+ if dst then peekElemOff tzname 1 else peekElemOff tzname 0
# else /* ! HAVE_TZNAME */
-- We're in trouble. If you should end up here, please report this as a bug.
-# error Dont know how to get at timezone name on your OS.
+# error "Don't know how to get at timezone name on your OS."
# endif /* ! HAVE_TZNAME */
-- Get the offset in secs from UTC, if (struct tm) doesn't supply it. */
gmtoff x = do
dst <- (#peek struct tm,tm_isdst) x
tz <- peek timezone
- if dst then return (fromIngtegral tz - 3600) else return tz
+ if dst then return (fromIntegral tz - 3600) else return tz
# endif /* ! HAVE_ALTZONE */
#endif /* ! HAVE_TM_ZONE */
+-- -----------------------------------------------------------------------------
+-- toCalendarTime t converts t to a local time, modified by
+-- the current timezone and daylight savings time settings. toUTCTime
+-- t converts t into UTC time. toClockTime l converts l into the
+-- corresponding internal ClockTime. The wday, yday, tzname, and isdst fields
+-- are ignored.
+
toCalendarTime :: ClockTime -> IO CalendarTime
toCalendarTime = clockToCalendarTime localtime False
-- result.
--
gmtoff <- gmtoff p_tm
- let res = fromIntegral t + tz + fromIntegral gmtoff
+ let res = fromIntegral t - tz + fromIntegral gmtoff
return (TOD (fromIntegral res) 0)
-- -----------------------------------------------------------------------------
foreign import unsafe localtime :: Ptr CTime -> IO (Ptr CTm)
foreign import unsafe gmtime :: Ptr CTime -> IO (Ptr CTm)
-foreign import unsafe strftime :: Ptr CChar -> CSize -> Addr## -> Ptr CTm -> IO CSize
foreign import unsafe mktime :: Ptr CTm -> IO CTime
foreign import unsafe time :: Ptr CTime -> IO CTime
-#ifdef HAVE_GETTIMEOFDAY
+#if HAVE_GETTIMEOFDAY
type CTimeVal = ()
foreign import unsafe gettimeofday :: Ptr CTimeVal -> Ptr () -> IO CInt
#endif
-#if defined(_WIN32) && !defined(cygwin32_TARGET_OS)
-type CTimeB
+#if HAVE_FTIME
+type CTimeB = ()
+#ifndef mingw32_TARGET_OS
foreign import unsafe ftime :: Ptr CTimeB -> IO CInt
+#else
+foreign import unsafe ftime :: Ptr CTimeB -> IO ()
+#endif
#endif
projects / ghc-hetmet.git / blobdiff