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diff --git a/libglusterfs/src/timespec.h b/libglusterfs/src/timespec.h
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+/*
+ Copyright (c) 2013 Red Hat, Inc. <http://www.redhat.com>
+ This file is part of GlusterFS.
+
+ This file is licensed to you under your choice of the GNU Lesser
+ General Public License, version 3 or any later version (LGPLv3 or
+ later), or the GNU General Public License, version 2 (GPLv2), in all
+ cases as published by the Free Software Foundation.
+*/
+
+#ifndef __INCLUDE_TIMESPEC_H__
+#define __INCLUDE_TIMESPEC_H__
+
+#include <stdint.h>
+
+#define TS(ts) ((ts.tv_sec * 1000000000LL) + ts.tv_nsec)
+#define NANO (+1.0E-9)
+#define GIGA UINT64_C(1000000000)
+
+void tv2ts (struct timeval tv, struct timespec *ts);
+void timespec_now (struct timespec *ts);
+void timespec_adjust_delta (struct timespec ts, struct timespec delta);
+
+#endif /* __INCLUDE_TIMESPEC_H__ */