Re: [PATCH 04/18] date.c: mark file-local function static

[Johannes Sixt <j.sixt@viscovery.net>]

Junio C Hamano schrieb:
> Johannes Sixt <j.sixt@viscovery.net> writes:
>> This one is used from compat/mingw.c for the gettimeofday emulation.
>> Please leave it extern.

I'll add this patch to may windows-update series to avoids this hack.

--- 8< ---
From: Johannes Sixt <j6t@kdbg.org>
Subject: [PATCH] compat/mingw.c: do not use tm_to_time_t from date.c

To implement gettimeofday(), a broken-down UTC time was requested from the
system using GetSystemTime() and converted using tm_to_time_t() because it
does not look at the current timezone, which mktime() would do. But
meanwhile we have grown infrastructure in mingw.c, so that we can use a
different conversion path. This way we can avoid the ugly back-reference
from the compatibility layer to the generic git code.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
---
 compat/mingw.c |   18 +++++-------------
 1 files changed, 5 insertions(+), 13 deletions(-)

diff --git a/compat/mingw.c b/compat/mingw.c
index faaaade..3c78f39 100644
--- a/compat/mingw.c
+++ b/compat/mingw.c
@@ -281,19 +281,11 @@ int mkstemp(char *template)
 
 int gettimeofday(struct timeval *tv, void *tz)
 {
-	SYSTEMTIME st;
-	struct tm tm;
-	GetSystemTime(&st);
-	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;
-	tv->tv_sec = tm_to_time_t(&tm);
-	if (tv->tv_sec < 0)
-		return -1;
-	tv->tv_usec = st.wMilliseconds*1000;
+	FILETIME ft;
+	GetSystemTimeAsFileTime(&ft);
+	tv->tv_sec = filetime_to_time_t(&ft);
+	/* the unit is 100-nanoseconds, ie., a 10th of a microsecond */
+	tv->tv_usec = (ft.dwLowDateTime % 10000000) / 10;
 	return 0;
 }
 
-- 
1.6.6.1207.g714a1.dirty