T: add some hack programs

- time_meas to measure time spent in scheduling
- timeplot to show nice histograms in realtim of above measurement

common/utils/T/tracer/hacks/Makefile

@@ -3,16 +3,23 @@ CFLAGS=-Wall -g -pthread -DT_TRACER -I. -I..
 
 LIBS=-lX11 -lm -lpng -lXft
 
-all: dump_nack_signal
+all: dump_nack_signal time_meas timeplot
 
 dump_nack_signal: ../utils.o ../database.o ../config.o ../event.o \
                   dump_nack_signal.o
 	$(CC) $(CFLAGS) -o dump_nack_signal $^ $(LIBS)
 
+time_meas: ../utils.o ../database.o ../config.o ../event.o \
+                  time_meas.o
+	$(CC) $(CFLAGS) -o time_meas $^ $(LIBS)
+
+timplot: timeplot.o
+	$(CC) $(CFLAGS) -o timeplot $^ $(LIBS)
+
 .PHONY: all
 
 %.o: %.c
 	$(CC) $(CFLAGS) -c -o $@ $<
 
 clean:
-	rm -f *.o core dump_nack_signal
+	rm -f *.o core dump_nack_signal time_meas timeplot