1 files changed, 54 insertions, 0 deletions
diff --git a/kit/time.h b/kit/time.h
new file mode 100644
index 0000000..c14f8ff
--- /dev/null
+++ b/kit/time.h
@@ -0,0 +1,54 @@
+#ifndef KIT_TIME_H
+#define KIT_TIME_H
+
+#ifndef _GNU_SOURCE
+#  define _GNU_SOURCE
+#endif
+
+#include <time.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef TIME_UTC
+#  define TIME_UTC 1
+#endif
+
+#ifdef KIT_REQUIRE_TIMESPEC_GET
+#  ifndef WIN32_LEAN_AND_MEAN
+#    define WIN32_LEAN_AND_MEAN 1
+#  endif
+#  ifndef NOMINMAX
+#    define NOMINMAX 1
+#  endif
+#  include <windows.h>
+
+#  define KIT_TIMESPEC_IMPL_UNIX_EPOCH_IN_TICKS 116444736000000000ull
+#  define KIT_TIMESPEC_IMPL_TICKS_PER_SECONDS 10000000ull
+
+static int timespec_get(struct timespec *ts, int base) {
+  if (ts == NULL || base != TIME_UTC)
+    return 0;
+
+  FILETIME       ft;
+  ULARGE_INTEGER date;
+  LONGLONG       ticks;
+
+  GetSystemTimeAsFileTime(&ft);
+  date.HighPart = ft.dwHighDateTime;
+  date.LowPart  = ft.dwLowDateTime;
+  ticks         = (LONGLONG) (date.QuadPart -
+                      KIT_TIMESPEC_IMPL_UNIX_EPOCH_IN_TICKS);
+  ts->tv_sec    = ticks / KIT_TIMESPEC_IMPL_TICKS_PER_SECONDS;
+  ts->tv_nsec   = (ticks % KIT_TIMESPEC_IMPL_TICKS_PER_SECONDS) * 100;
+
+  return base;
+}
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif