From 6a832cdb8d659f2206606007f73f52253d8cbae9 Mon Sep 17 00:00:00 2001 From: usa Date: Sat, 21 Oct 2017 08:41:22 +0000 Subject: Use GetSystemTimePreciseAsFileTime on recent Windows * win32/win32.c (gettiemeofday, wutime): use GetSystemTimePreciseAsFileTime instead of GetSystemTimeAsFileTime if it is available. This patch is based on Takehiro Kubo 's one (change only the name of wrapper function). Thanks! and sorry to late [ruby-dev:50167] [Feature #13732] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60240 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- win32/win32.c | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) (limited to 'win32/win32.c') diff --git a/win32/win32.c b/win32/win32.c index 2f0df85214..8f78b541dd 100644 --- a/win32/win32.c +++ b/win32/win32.c @@ -4576,13 +4576,28 @@ filetime_to_timeval(const FILETIME* ft, struct timeval *tv) return tv->tv_sec > 0 ? 0 : -1; } +static void get_systemtime(FILETIME *ft) +{ + typedef void (WINAPI *get_time_func)(FILETIME *ft); + static get_time_func func = (get_time_func)-1; + + if (func == (get_time_func)-1) { + /* GetSystemTimePreciseAsFileTime is available since Windows 8 and Windows Server 2012. */ + func = (get_time_func)get_proc_address("kernel32", "GetSystemTimePreciseAsFileTime", NULL); + if (func == NULL) { + func = GetSystemTimeAsFileTime; + } + } + func(ft); +} + /* License: Ruby's */ int __cdecl gettimeofday(struct timeval *tv, struct timezone *tz) { FILETIME ft; - GetSystemTimeAsFileTime(&ft); + get_systemtime(&ft); filetime_to_timeval(&ft, tv); return 0; @@ -7314,7 +7329,7 @@ wutime(const WCHAR *path, const struct utimbuf *times) } } else { - GetSystemTimeAsFileTime(&atime); + get_systemtime(&atime); mtime = atime; } -- cgit v1.2.3