books/apitue/sample-code/02/Makefile

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Makefile
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2024-01-20 14:39:54 +00:00
catio: tmpfiles simple-cat.c
@i=0; for n in 3145728 1048576 32768 16384 4096 1024 256 128 64 1; do \
echo "BUFFSIZE = $$n"; \
cc -Wall -DBUFFSIZE=$$n simple-cat.c; \
i=$$(( $$i + 1 )); \
for j in $$(jot 5); do \
time ./a.out <tmp/file$$i >tmp/out; \
done; \
echo; \
echo; \
done;
clean:
rm -fr tmp
tmpfiles: tmp/file9
tmp/file9:
@mkdir -p tmp
@for n in $$(jot 10); do \
echo "Creating file number $$n..."; \
dd if=/dev/urandom of=tmp/file$$n bs=$$(( 1024 * 1024 )) count=100 2>/dev/null;\
done;
sync: tmpfiles scat
time ./scat <tmp/file9 >out
scat: sync-cat.c
cc -Wall sync-cat.c -o scat
async: tmpfiles ascat
time ./ascat <tmp/file9 >out
ascat: async-cat.c
cc -Wall $? -o $@
async-cat.c: sync-cat.c
sed -e 's|\(.*O_SYNC.*\)|//\1|' sync-cat.c > async-cat.c