1 files changed, 76 insertions, 0 deletions
diff --git a/timeval.h b/timeval.h
new file mode 100644
index 0000000..ff04962
--- /dev/null
+++ b/timeval.h
@@ -0,0 +1,76 @@
+/*
+ * timeval.h    1.0 01/12/19
+ *
+ * Defines gettimeofday, timeval, etc. for Win32
+ *
+ * By Wu Yongwei
+ *
+ */
+
+#ifndef _TIMEVAL_H
+#define _TIMEVAL_H
+
+#ifdef _WIN32
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <time.h>
+
+#ifndef __GNUC__
+#define EPOCHFILETIME (116444736000000000i64)
+#else
+#define EPOCHFILETIME (116444736000000000LL)
+#endif /* not __GNUC__ */
+
+#if 0
+struct timeval {
+    long tv_sec;        /* seconds */
+    long tv_usec;  /* microseconds */
+};
+#endif /* 0 */
+
+struct timezone {
+    int tz_minuteswest; /* minutes W of Greenwich */
+    int tz_dsttime;     /* type of dst correction */
+};
+
+__inline int gettimeofday(struct timeval *tv, struct timezone *tz)
+{
+    FILETIME        ft;
+    LARGE_INTEGER   li;
+    __int64         t;
+    static int      tzflag;
+
+    if (tv)
+    {
+        GetSystemTimeAsFileTime(&ft);
+        li.LowPart  = ft.dwLowDateTime;
+        li.HighPart = ft.dwHighDateTime;
+        t  = li.QuadPart;       /* In 100-nanosecond intervals */
+        t -= EPOCHFILETIME;     /* Offset to the Epoch time */
+        t /= 10;                /* In microseconds */
+        tv->tv_sec  = (long)(t / 1000000);
+        tv->tv_usec = (long)(t % 1000000);
+    }
+
+    if (tz)
+    {
+        if (!tzflag)
+        {
+            _tzset();
+            tzflag++;
+        }
+        tz->tz_minuteswest = _timezone / 60;
+        tz->tz_dsttime = _daylight;
+    }
+
+    return 0;
+}
+
+#else  /* _WIN32 */
+
+#include <sys/time.h>
+
+#endif /* _WIN32 */
+
+#endif /* _TIMEVAL_H */