On 8/26/06, George Boudreau <[EMAIL PROTECTED]> wrote:
.. I still have no method for making progress_bar run without fuser.
Ideas anyone???
George, I think I finally figured out a way to do this. I'm a little
short on time, so I'll try to explain. No time for diff's but you
should be able to figure it out.
From inside the script, I tried using $PPID, but it was coming out to
strange values. I also ran ps with a lot of args, and found that
sometimes the script parent was even pid 1. Seems there's an extra
level of parenting or 2 when make actually runs a shell command.
Then I found out that within the Makefile, each target command has a
PPID of the actual make process. Try this.
fud:
@echo PPID=$$PPID
It will echo the PID of make itself. So, the answer to the problem is
to use $$PPID in the Makefile and pass it as an argument to
progress_bar.sh. Here's a simple example that I found to work.
$ cat Makefile
foo:
@echo -n "Building $@"
@./script.sh $@ $$PPID &
@sleep 2
@touch $@
@echo
bar:
@echo -n "Building $@"
@./script.sh $@ $$PPID &
@sleep 2
@touch $@
@echo
all: foo bar
clean:
rm -f foo bar
$ cat script.sh
#!/bin/bash
TARGET=${1}
MAKE_PPID=${2}
until [[ -f ${TARGET} ]] || [[ ! -e /proc/${MAKE_PPID} ]]; do
echo -n '.'
sleep .12
done
$ make all
Building foo.................
Building bar................
It works when I interrupted the process, too. What do you think?
--
Dan
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