1 files changed, 22 insertions, 0 deletions
diff --git a/mysys/my_init.c b/mysys/my_init.c
index c1337205eb4..8281d7ced99 100644
--- a/mysys/my_init.c
+++ b/mysys/my_init.c
@@ -371,6 +371,28 @@ static void my_win_init(void)
 
   /* chiude la chiave */
   RegCloseKey(hSoftMysql) ;
+
+  /* The following is used by time functions */
+#define OFFSET_TO_EPOC ((__int64) 134774 * 24 * 60 * 60 * 1000 * 1000 * 10)
+#define MS 10000000
+  {
+    FILETIME ft;
+    LARGE_INTEGER li, t_cnt;
+    DBUG_ASSERT(sizeof(LARGE_INTEGER) == sizeof(query_performance_frequency));
+    if (QueryPerformanceFrequency((LARGE_INTEGER *)&query_performance_frequency))
+      query_performance_frequency= 0;
+    else
+    {
+      GetSystemTimeAsFileTime(&ft);
+      li.LowPart=  ft.dwLowDateTime;
+      li.HighPart= ft.dwHighDateTime;
+      query_performance_offset= li.QuadPart-OFFSET_TO_EPOC;
+      QueryPerformanceCounter(&t_cnt);
+      query_performance_offset-= (t_cnt.QuadPart / query_performance_frequency * MS +
+                                  t_cnt.QuadPart % query_performance_frequency * MS /
+                                  query_performance_frequency);
+    }
+  }
   DBUG_VOID_RETURN ;
 }