Index: libcfa/src/clock
===================================================================
--- libcfa/src/clock	(revision bf71cfdb7285490eee552b461158846f626cc52f)
+++ libcfa/src/clock	(revision bf71cfdb7285490eee552b461158846f626cc52f)
@@ -0,0 +1,96 @@
+// 
+// Cforall Version 1.0.0 Copyright (C) 2018 University of Waterloo
+//
+// The contents of this file are covered under the licence agreement in the
+// file "LICENCE" distributed with Cforall.
+// 
+// clock -- 
+// 
+// Author           : Peter A. Buhr
+// Created On       : Thu Apr 12 14:36:06 2018
+// Last Modified By : Peter A. Buhr
+// Last Modified On : Mon Jul  2 21:40:01 2018
+// Update Count     : 7
+// 
+
+#include <time>
+
+
+//######################### C time #########################
+
+static inline char * ctime( time_t tp ) { char * buf = ctime( &tp ); buf[24] = '\0'; return buf; }
+static inline char * ctime_r( time_t tp, char * buf ) { ctime_r( &tp, buf ); buf[24] = '\0'; return buf; }
+static inline tm * gmtime( time_t tp ) { return gmtime( &tp ); }
+static inline tm * gmtime_r( time_t tp, tm * result ) { return gmtime_r( &tp, result ); }
+static inline tm * localtime( time_t tp ) { return localtime( &tp ); }
+static inline tm * localtime_r( time_t tp, tm * result ) { return localtime_r( &tp, result ); }
+
+
+//######################### Clock #########################
+
+struct Clock {											// private
+	Duration offset;									// for virtual clock: contains offset from real-time
+	int clocktype;										// implementation only -1 (virtual), CLOCK_REALTIME
+};
+
+static inline {
+	void resetClock( Clock & clk ) with( clk ) {
+		clocktype = CLOCK_REALTIME_COARSE;
+	} // Clock::resetClock
+
+	void resetClock( Clock & clk, Duration adj ) with( clk ) {
+		clocktype = -1;
+		offset = adj + __timezone`s;					// timezone (global) is (UTC - local time) in seconds
+	} // resetClock
+
+	void ?{}( Clock & clk ) { resetClock( clk ); }
+	void ?{}( Clock & clk, Duration adj ) { resetClock( clk, adj ); }
+
+	Duration getResNsec() {
+		struct timespec res;
+		clock_getres( CLOCK_REALTIME, &res );
+		return ((int64_t)res.tv_sec * TIMEGRAN + res.tv_nsec)`ns;
+	} // getRes
+
+	Duration getRes() {
+		struct timespec res;
+		clock_getres( CLOCK_REALTIME_COARSE, &res );
+		return ((int64_t)res.tv_sec * TIMEGRAN + res.tv_nsec)`ns;
+	} // getRes
+
+	Time getTimeNsec() {								// with nanoseconds
+		timespec curr;
+		clock_gettime( CLOCK_REALTIME, &curr );
+		return (Time){ curr };
+	} // getTime
+
+	Time getTime() {									// without nanoseconds
+		timespec curr;
+		clock_gettime( CLOCK_REALTIME_COARSE, &curr );
+		curr.tv_nsec = 0;
+		return (Time){ curr };
+	} // getTime
+
+	Time getTime( Clock & clk ) with( clk ) {
+		return getTime() + offset;
+	} // getTime
+
+	Time ?()( Clock & clk ) with( clk ) {				// alternative syntax
+		return getTime() + offset;
+	} // getTime
+
+	timeval getTime( Clock & clk ) {
+		return (timeval){ clk() };
+	} // getTime
+
+	tm getTime( Clock & clk ) with( clk ) {
+		tm ret;
+		localtime_r( getTime( clk ).tv_sec, &ret );
+		return ret;
+	} // getTime
+} // distribution
+
+// Local Variables: //
+// mode: c //
+// tab-width: 4 //
+// End: //