52 lines
1.3 KiB
Bash
Executable File
52 lines
1.3 KiB
Bash
Executable File
#!/bin/sh
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# argument checks
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if [ $# -lt 1 ] || [ \! -z "$(echo $1|tr -d 0-9)" ] || [ $1 -lt 2 ] || [ $1 -gt 16 ]; then
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echo "Usage: ${0##*/} <Hatari instances, 2-16> [extra Hatari args]"
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echo
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echo "Example of running 4 Hatari instances in a MIDI ring, each using midi/ as HD:"
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echo " ${0##*/} 4 -d midi/"
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exit 1
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fi
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count=$1
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shift
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args=$*
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# open fifos
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for i in $(seq $count); do
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mkfifo midi$i
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if [ $? -ne 0 ]; then
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echo "ERROR: creating FIFO 'midi$i' for MIDI communication failed!"
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exit 1
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fi
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done
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# show full path
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hatari=$(which hatari)
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# run MIDI ring Hatari instances
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catpids=""
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for i in $(seq $(($count-1))); do
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next=$(($i+1))
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echo $hatari --midi-in midi$i --midi-out midi$next $args &
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hatari --midi-in midi$i --midi-out midi$next $args &
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# Without this Hataris would deadlock as fifos
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# block the process until both ends are opened.
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# Hatari opens midi output first (for writing),
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# so this needs to read it.
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cat midi$next >/dev/null &
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catpids="$catpids $!"
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done
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# and join the beginning and end of the MIDI ring
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echo $hatari --midi-in midi$count --midi-out midi1 $args &
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hatari --midi-in midi$count --midi-out midi1 $args &
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cat midi1 >/dev/null &
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catpids="$catpids $!"
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# after connections are open, fifo files can be removed
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sleep 2
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for i in $(seq $count); do
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rm midi$i
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done
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kill -9 $catpids
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