Issue with bash coprocess
Thu Nov 8 14:29:00 GMT 2007
My previous post should have been written like this:
I am trying to make a coprocess in bash, I found an example here:
When I tried that example, it sometimes hung, so to debug it (and to understand it) I made my own version. This also hangs sometimes.
I found that it is this "exec" command that hangs:
( "$@" $fifo.o ; rm -f $fifo.i $fifo.o ) &
exec 3>$fifo.i 4$fifo.o ; rm -f $fifo.i $fifo.o ) &
exec 3>$fifo.i 4$fifo.i 4$fifo.o ; rm -f $fifo.i $fifo.o ) &
it does not hang, but the background subshell never ends.
To me, it seems to be a timing issue, as it (seems to) work if I put in the "sleep" command.
I have attached my script. It should give this output:
coprocess_test_1_client: init rc: 0
coprocess_test_1_client: put rc: 0
coprocess_test_1_client: get rc: 0
coprocess_test_1_client: REPLY: 1 + 1 = 2
coprocess_test_1_client: term rc: 0
Is there an issue with my script? bash? cygwin? or me?
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