From 0b0b7c7da3066c32fee59649de6c03b788d35572 Mon Sep 17 00:00:00 2001
From: brarcher <brarcher@64e312b2-a51f-0410-8e61-82d0ca0eb02a>
Date: Wed, 25 Dec 2013 03:04:09 +0000
Subject: [PATCH] libcompat: add alternative for gettimeofday

git-svn-id: svn+ssh://svn.code.sf.net/p/check/code/trunk@934 64e312b2-a51f-0410-8e61-82d0ca0eb02a
---
 configure.ac       |  4 ++--
 lib/gettimeofday.c | 29 +++++++++++++++++++++++++++++
 lib/libcompat.h    |  4 ++++
 3 files changed, 35 insertions(+), 2 deletions(-)
 create mode 100644 lib/gettimeofday.c

diff --git a/configure.ac b/configure.ac
index b2d14c5..c047949 100644
--- a/configure.ac
+++ b/configure.ac
@@ -248,8 +248,8 @@ AC_FUNC_REALLOC
 # replaced with Check's replacement of these functions.
 HW_LIBRT_TIMERS
 
-AC_REPLACE_FUNCS([alarm clock_gettime fileno localtime_r pipe putenv setenv sleep strdup strsignal unsetenv])
-AC_CHECK_DECLS([alarm, clock_gettime, fileno, localtime_r, pipe, putenv, setenv, sleep, strdup, strsignal, unsetenv])
+AC_REPLACE_FUNCS([alarm clock_gettime gettimeofday fileno localtime_r pipe putenv setenv sleep strdup strsignal unsetenv])
+AC_CHECK_DECLS([alarm, clock_gettime, gettimeofday, fileno, localtime_r, pipe, putenv, setenv, sleep, strdup, strsignal, unsetenv])
 
 AC_CHECK_FUNCS([setitimer])
 
diff --git a/lib/gettimeofday.c b/lib/gettimeofday.c
new file mode 100644
index 0000000..8b3be8c
--- /dev/null
+++ b/lib/gettimeofday.c
@@ -0,0 +1,29 @@
+#include "libcompat.h"
+#include <errno.h>
+
+#if defined(_MSC_VER) || defined(__BORLANDC__)
+#define EPOCHFILETIME (116444736000000000i64)
+#else
+#define EPOCHFILETIME (116444736000000000LL)
+#endif
+
+int gettimeofday (struct timeval *tv, void* tz)
+{
+#if _MSC_VER
+    union {
+        __int64 ns100; /*time since 1 Jan 1601 in 100ns units */
+        FILETIME ft;
+    } now;
+
+    GetSystemTimeAsFileTime (&now.ft);
+    tv->tv_usec = (long) ((now.ns100 / 10LL) % 1000000LL);
+    tv->tv_sec = (long) ((now.ns100 - EPOCHFILETIME) / 10000000LL);
+    return (0);
+#else
+    // Return that there is no implementation of this on the system
+    errno=ENOSYS;
+    return -1;
+#endif /* _MSC_VER */
+}
+
+
diff --git a/lib/libcompat.h b/lib/libcompat.h
index 0a12356..55034dc 100644
--- a/lib/libcompat.h
+++ b/lib/libcompat.h
@@ -92,6 +92,10 @@ int fileno (FILE *stream);
 #define getpid _getpid;
 #endif /* !HAVE_GETPID && HAVE__GETPID */
 
+#if !HAVE_GETTIMEOFDAY
+int gettimeofday (struct timeval *tv, void* tz);
+#endif /* !HAVE_LOCALTIME_R */
+
 #if !HAVE_DECL_LOCALTIME_R
 #if !defined(localtime_r)
 struct tm *localtime_r (const time_t *clock, struct tm *result);
-- 
2.40.0