From e64711977b6a0d8f4c5c6caf8fffec129d27ce68 Mon Sep 17 00:00:00 2001
From: usa <usa@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Wed, 3 Sep 2008 16:14:17 +0000
Subject: 	* win32/win32.c (filetime_to_timeval): new function, split
 from 	  gettimeofday().

	* win32/win32.c (gettimeofday): use above function.

	* win32/win32.c (filetime_to_unixtime): ditto. [ruby-dev:36135]



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19106 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 win32/win32.c | 51 +++++++++++++++++++++++----------------------------
 1 file changed, 23 insertions(+), 28 deletions(-)

(limited to 'win32/win32.c')

diff --git a/win32/win32.c b/win32/win32.c
index a7d76fca85..5ba7557ed0 100644
--- a/win32/win32.c
+++ b/win32/win32.c
@@ -3086,27 +3086,36 @@ waitpid(rb_pid_t pid, int *stat_loc, int options)
 
 #include <sys/timeb.h>
 
-int _cdecl
-gettimeofday(struct timeval *tv, struct timezone *tz)
+static int
+filetime_to_timeval(const FILETIME* ft, struct timeval *tv)
 {
-    FILETIME ft;
     ULARGE_INTEGER tmp;
     unsigned LONG_LONG lt;
 
-    GetSystemTimeAsFileTime(&ft);
-    tmp.LowPart = ft.dwLowDateTime;
-    tmp.HighPart = ft.dwHighDateTime;
+    tmp.LowPart = ft->dwLowDateTime;
+    tmp.HighPart = ft->dwHighDateTime;
     lt = tmp.QuadPart;
 
     /* lt is now 100-nanosec intervals since 1601/01/01 00:00:00 UTC,
        convert it into UNIX time (since 1970/01/01 00:00:00 UTC).
        the first leap second is at 1972/06/30, so we doesn't need to think
        about it. */
-    lt /= 10000;	/* to msec */
-    lt -= (LONG_LONG)((1970-1601)*365.2425) * 24 * 60 * 60 * 1000;
+    lt /= 10;	/* to usec */
+    lt -= (LONG_LONG)((1970-1601)*365.2425) * 24 * 60 * 60 * 1000 * 1000;
 
-    tv->tv_sec = lt / 1000;
-    tv->tv_usec = lt % 1000;
+    tv->tv_sec = lt / (1000 * 1000);
+    tv->tv_usec = lt % (1000 * 1000);
+
+    return tv->tv_sec > 0 ? 0 : -1;
+}
+
+int _cdecl
+gettimeofday(struct timeval *tv, struct timezone *tz)
+{
+    FILETIME ft;
+
+    GetSystemTimeAsFileTime(&ft);
+    filetime_to_timeval(&ft, tv);
 
     return 0;
 }
@@ -3432,26 +3441,12 @@ static time_t
 filetime_to_unixtime(const FILETIME *ft)
 {
     FILETIME loc;
-    SYSTEMTIME st;
-    struct tm tm;
-    time_t t;
+    struct timeval tv;
 
-    if (!FileTimeToLocalFileTime(ft, &loc)) {
+    if (filetime_to_timeval(ft, &tv) == (time_t)-1)
 	return 0;
-    }
-    if (!FileTimeToSystemTime(&loc, &st)) {
-	return 0;
-    }
-    memset(&tm, 0, sizeof(tm));
-    tm.tm_year = st.wYear - 1900;
-    tm.tm_mon = st.wMonth - 1;
-    tm.tm_mday = st.wDay;
-    tm.tm_hour = st.wHour;
-    tm.tm_min = st.wMinute;
-    tm.tm_sec = st.wSecond;
-    tm.tm_isdst = -1;
-    t = mktime(&tm);
-    return t == -1 ? 0 : t;
+    else
+	return tv.tv_sec;
 }
 
 static unsigned
-- 
cgit v1.2.3