X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=cbits%2FWin32Utils.c;h=0f4eb520efcc8353186f998e650d3edb771766ab;hb=748003827970cfc57cb26db256b72d16e504bb37;hp=942b2c47a3ac9fe12e0a1b74265bed0ee02b6add;hpb=1d4ff287d9057348f811d8d447a321ad617ecfdf;p=ghc-base.git

diff --git a/cbits/Win32Utils.c b/cbits/Win32Utils.c
index 942b2c4..0f4eb52 100644
--- a/cbits/Win32Utils.c
+++ b/cbits/Win32Utils.c
@@ -107,18 +107,16 @@ void maperrno (void)
 			errno = EINVAL;
 }
 
-#define TICKS_PER_SECOND 50
-// must match GHC.Conc.tick_freq
-
-HsInt getTicksOfDay(void)
+HsWord64 getUSecOfDay(void)
 {
-    HsInt64 t;
+    HsWord64 t;
     FILETIME ft;
     GetSystemTimeAsFileTime(&ft);
-    t = ((HsInt64)ft.dwHighDateTime << 32) | ft.dwLowDateTime;
-    t = (t * TICKS_PER_SECOND) / 10000000LL;
-      /* FILETIMES are in units of 100ns */
-    return (HsInt)t;
+    t = ((HsWord64)ft.dwHighDateTime << 32) | ft.dwLowDateTime;
+    t = t / 10LL;
+    /* FILETIMES are in units of 100ns,
+       so we divide by 10 to get microseconds */
+    return t;
 }
 
 #endif