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.ONESHELL:

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ATT = $(EXE:=.att)
EXE = $(basename $(SRC))
LOG = $(addsuffix .log,$(filter-out test,$(EXE)))
SRC = $(wildcard *.cc)
STA = $(addsuffix .sta,$(filter-out test,$(EXE)))
TXT = $(addsuffix .txt,$(filter-out test,$(EXE)))

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DEBUG = -fno-inline -Og
OPT = -O3
CXXFLAGS = -fanalyzer -g -pthread -std=c++20 -Wall $(OPT)
LDFLAGS = -L..
LDLIBS = -latomic -ldl -lrpmalloc

export LC_ALL=C
export LD_LIBRARY_PATH=.

ifeq ($(findstring stm,$(notdir $(CURDIR))),stm)
	CXXFLAGS += -fgnu-tm
	DEBUG += -Os # trick to avoid undefined behavior!!!
else
	DEBUG += -fsanitize={address,alignment,bool,bounds,bounds-strict,builtin,enum,float-cast-overflow,float-divide-by-zero,integer-divide-by-zero,leak,nonnull-attribute,null,object-size,pointer-compare,pointer-overflow,pointer-subtract,return,returns-nonnull-attribute,shift,shift-base,shift-exponent,signed-integer-overflow,undefined,unreachable,vla-bound,vptr}
endif

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all: txt

att: $(ATT)

check: $(EXE)
	@for i in $^; do
		if nm -C ./$$i | grep -q rpmalloc; then
			echo "rpmalloc lib detected in $${PWD##*/}/$$i"
		else
			echo "rpmalloc lib NOT DETECTED in $${PWD##*/}/$$i!!!"
		fi
	done

clean:
	-rm -fv $(ATT) $(EXE) $(CAC) $(CAL) $(DAT) $(DEP) $(LOG) $(STA) $(TXT) callgrind.out.* core.* perf.* *.dat.old *~

exe: $(EXE)

log: $(LOG)

sta: $(STA)

txt: $(TXT)

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%.att: %
	objdump -Cd $< > $@

%.log %.sta: %
	@LANG=C
	sudo sysctl kernel.perf_event_paranoid=-1
	perf stat -r 33 > $*.log 2> $*.sta -- ./$<

%.txt: %.log %.sta
	@v="[$$(cat $*.log | tr '\n' ',')]"
	sum=$$(python3 -c "import statistics; print('{0:.0f}'.format(sum($$v)))")
	median=$$(python3 -c "import statistics; print('{0:.0f}'.format(statistics.median($$v)))")
	mean=$$(python3 -c "import statistics; print('{0:.0f}'.format(statistics.mean($$v)))")
	stdev=$$(python3 -c "import statistics; print('{0:.0f}'.format(statistics.stdev($$v)))")
	cpu=$$(grep -o ".* msec task-clock" $*.sta | grep -o "[[:digit:].]*")
#	ratio=$$(python3 -c "print('{0:.2f}'.format($$sum / $$cpu))")
	ratio=$$(python3 -c "print('{0:.2f}'.format($$median / $$cpu))")
	hc=$$(grep 'N = 1;' stack.cc > /dev/null && echo '.' || echo ':')
	printf "%18s%10s%10s%10s%10s%10s\n" program median mean stdev cpu ratio | tee $@
	printf "%18s%10s%10s%10s%10s%10s\n" "$$(basename $$(pwd))$$hc" $$median $$mean $$stdev $$cpu $$ratio | tee -a $@

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.PHONY: all att check clean exe log sta txt
.PRECIOUS: $(LOG) $(STA) $(TXT)

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