Make a new stat type of Value which is a scalar stat that

proxies for a real C/C++ scalar value or scalar functor.
This replaces the scalar() and functor() terms that were
previously used in formulas.  This helps when dumping
statistics because the formulas are not supposed to change.

cpu/base_cpu.cc:
    Add a number of cycles stat to the cpu object that tracks the
    number of cycles that the cpu has executed.  This starts to pave
    the way for cpu cycles being different from event ticks.
cpu/base_cpu.hh:
    provide a functor for calculating all simulated instructions
    of all CPUs and a virtual function for determining that number.
    To deal with the change from functor() to Value::functor()
cpu/simple_cpu/simple_cpu.cc:
    simTicks -> numCycles
    numInsts is now a real Scalar stat, not a Formula
cpu/simple_cpu/simple_cpu.hh:
    numInsts is now a real Scalar stat, not a Formula
    count all instructions
sim/stat_control.cc:
    simInsts, simTicks, hostMemory, and hostSeconds are no
    longer Statistics::Formula but rather Statistics::Value
    add new stat for tick frequency
sim/stats.hh:
    don't need everything to be extern.
test/Makefile:
    Make stuff work a tad bit better
test/stattest.cc:
    test out Statistics::Value

--HG--
extra : convert_revision : c812e8baa2b17c08abf3a68ed1e1125dc6f2cfb4

test/Makefile

@@ -2,18 +2,24 @@
 
 CC?= gcc
 CXX?= g++
+PYTHON?=/usr/bin/env python
 
 CURDIR?= $(shell /bin/pwd)
-SRCDIR?= ..
+SRCDIR?= $(CURDIR)/..
 
 CCFLAGS= -g -O0 -MMD -I. -I$(SRCDIR) -I- -DTRACING_ON=0
 MYSQL= -I/usr/include/mysql -L/usr/lib/mysql -lmysqlclient
 
-VPATH=$(SRCDIR)
+VPATH=$(SRCDIR):$(CURDIR)
 
 default:
 	@echo "You must specify a target"
 
+base/traceflags.cc base/traceflags.hh: $(SRCDIR)/base/traceflags.py
+	mkdir -p base; \
+	cd base; \
+	$(PYTHON) $<
+
 bitvectest: test/bitvectest.cc
 	$(CXX) $(CCFLAGS) -o $@ $^
 
@@ -61,5 +67,5 @@ tracetest: $(TRACE)
 	$(CXX) $(CCFLAGS) -o $@ $^
 
 clean:
-	@rm -f *test *~ .#* *.core core
+	@rm -rf *test *~ .#* *.core core base
 .PHONY: clean

test/stattest.cc

@@ -66,8 +66,8 @@ Vector2d<> s16;
 Formula f1;
 Formula f2;
 Formula f3;
-Formula f4;
-Formula f5;
+Value f4;
+Value f5;
 Formula f6;
 Formula f7;
 
@@ -279,11 +279,14 @@ main(int argc, char *argv[])
         ;
 
     f4
+        .functor(testfunc)
         .name("Formula4")
         .desc("this is formula 4")
         ;
 
+    TestClass testclass;
     f5
+        .functor(testclass)
         .name("Formula5")
         .desc("this is formula 5")
         ;
@@ -296,9 +299,6 @@ main(int argc, char *argv[])
     f1 = s1 + s2;
     f2 = (-s1) / (-s2) * (-s3 + ULL(100) + s4);
     f3 = sum(s5) * s7;
-    f4 = functor(testfunc);
-    TestClass testclass;
-    f5 = functor(testclass);
     f6 += constant(10.0);
     f6 += s5[3];
     f7 = constant(1);