all: iothrottle
	true

iothrottle: iothrottle.hex iothrottle.in
	perl -pe 's/hex=.*/"hex=".`cat iothrottle.hex`/e' iothrottle.in > iothrottle
	chmod +x iothrottle

iothrottle.so: iothrottle.c
	gcc -O2 -shared -fPIC -o iothrottle.so iothrottle.c -ldl
	strip iothrottle.so

iothrottle.hex: iothrottle.so
	hexdump -ve '1/1 "%.2x"' iothrottle.so > iothrottle.hex
	LC_ALL=C awk '{for (i=1; i<=length($$0); i+=2) printf "%c", strtonum("0x" substr($$0, i, 2))}' iothrottle.hex > iothrottle.bin
	md5sum iothrottle.so iothrottle.bin

test: iothrottle
	seq 10000000 | cat | pv > big
	./iothrottle cat big | pv > /dev/null
	./iothrottle -i 20M cat big | pv > /dev/null
	./iothrottle -o 20000K cat big | pv > /dev/null
	rm big

clean:
	rm -f iothrottle.so iothrottle.hex iothrottle.bin iothrottle iothrottle.1 iothrottle~