SHELL := bash
.ONESHELL:

ATT = $(EXE:=.att) $(shell echo {consumidor,productor}-{{0..3},g,s,z}.att)
DAT = $(REO:=.dat)
EXE = $(basename $(SRC))
LOG = $(REO:=.log)
REO = $(sort $(filter reorder%,$(EXE)))
SRC = $(wildcard *.cc)
TXT = $(REO:=.txt)

CXXFLAGS = -fanalyzer -mno-{avx,sse} -g -O3 -std=c++20 -Wall

all: att stat

att: $(ATT)

clave: | $(REO)
	@printf '%80s\n' | tr ' ' '-'
	echo "key:"
	echo -e "	r1=r2=0: number of reorders detected"
	echo -e "	iter   : iterations of the program"
	echo -e "	real   : real time in seconds"
	echo -e "	user   : user time in seconds"
	echo -e "	system : system time in seconds"
	echo -e "	u+s    : user time + system time"
	echo -e "	rate   : iterations per second"

clean:
	-rm -fv $(ATT) $(DAT) $(EXE) $(LOG) $(TXT) *~

exe: $(EXE)

stat: clave
	@printf '%80s\n' | tr ' ' '-'
	for i in $(TXT); do
		make -s $$i
		if [[ "$$i" == "$(firstword $(TXT))" ]]; then
			head -n 1 $$i
			printf '%80s\n' | tr ' ' '-'
		fi
		tail -n 1 $$i
	done
	printf '%80s\n' | tr ' ' '-'

sort: $(TXT) | clave
	@declare -a F=('programa' 'r1=r2=0' 'iter' 'real' 'user' 'system' 'u+s' 'rate')
	declare -a R=('' '' 'r' '' '' '' '' 'r')
	printf '%80s\n' | tr ' ' '-'
	for ((i=0; i<$${#F[@]}; ++i)); do
		head -n 1 -q $(firstword $(TXT)) | sed "s/  $${F[$$i]}/\[$${F[$$i]}\]/"
		printf '%80s\n' | tr ' ' '-'
		tail -n 1 -q $^ | sort -k$$((i + 1)),$$((i + 1))$${R[$$i]} -k8,8r -k7,7
		printf '%80s\n' | tr ' ' '-'

	done

ipc-0: CXXFLAGS += -O0
ipc-1: CXXFLAGS += -O1
ipc-2: CXXFLAGS += -O2
ipc-3: CXXFLAGS += -O3
ipc-g: CXXFLAGS += -Og
ipc-s: CXXFLAGS += -Os
ipc-z: CXXFLAGS += -Oz

consumidor-%.att: ipc-%
	gdb -batch -ex "file $<" -ex "disass consumidor" | c++filt | sed 's/0x0000000000/0x/g' > $@

productor-%.att: ipc-%
	gdb -batch -ex "file $<" -ex "disass productor" | c++filt | sed 's/0x0000000000/0x/g' > $@

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

%.dat %.log: %
	@governor=$$(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor)
	[ "$$USER" == "gustavo" ] && echo performance | sudo tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor &> /dev/null
	/usr/bin/time -f "%e\n%U\n%S" -o ./$<.dat ./$<  > ./$<.log 2> /dev/null
	[ "$$USER" == "gustavo" ] && echo $$governor | sudo tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor &> /dev/null

%.txt: %.dat %.log makefile
	@LC_ALL=C
	reorders=$$(tail -1 "./$*.log" | cut -d ' ' -f 1)
	iteraciones=$$(tail -1 "./$*.log" | cut -d ' ' -f 5)
	real=$$(sed '1q;d' "./$*.dat")
	usuario=$$(sed '2q;d' "./$*.dat")
	sistema=$$(sed '3q;d' "./$*.dat")
	total=$$(printf '%.2f' $$(bc -lq <<< "$$usuario + $$sistema"))
	rate=$$(bc -q <<< "$$iteraciones/$$total")
	printf '%17s%9s%9s%9s%9s%9s%9s%9s\n' programa r1=r2=0 iter real user system u+s rate > $@
	printf '%17s%9s%9s%9s%9s%9s%9s%9s\n' $* $$reorders $$iteraciones $$real $$usuario $$sistema $$total $$rate >> $@

.PRECIOUS: $(DAT) $(LOG) $(TXT)
.PHONY: all att clave clean exe stat