--- a
+++ b/src/utils/chrono.h
@@ -0,0 +1,62 @@
+/* Copyright (C) 2014 J.F.Dockes
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the
+ * Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef _CHRONO_H_INCLUDED_
+#define _CHRONO_H_INCLUDED_
+
+#include <time.h>
+
+/** Easy interface to measuring time intervals */
+class Chrono {
+public:
+ /** Initialize, setting the origin time */
+ Chrono();
+
+ /** Re-store current time and return mS since init or last call */
+ long restart();
+ /** Re-store current time and return uS since init or last call */
+ long urestart();
+
+ /** Snapshot current time to static storage */
+ static void refnow();
+
+ /** Return interval value in various units.
+ *
+ * If frozen is set this gives the time since the last refnow call
+ * (this is to allow for using one actual system call to get
+ values from many chrono objects, like when examining timeouts
+ in a queue
+ */
+ long long nanos(bool frozen = false);
+ long micros(bool frozen = false);
+ long millis(bool frozen = false);
+ float secs(bool frozen = false);
+
+ /** Return the absolute value of the current origin */
+ long long amicros() const;
+
+ struct TimeSpec {
+ time_t tv_sec; /* Time in seconds */
+ long tv_nsec; /* And nanoseconds (< 10E9) */
+ };
+
+private:
+ TimeSpec m_orig;
+ static TimeSpec o_now;
+};
+
+#endif /* _CHRONO_H_INCLUDED_ */