68b2e7f763
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31 lines
740 B
Bash
Executable File
31 lines
740 B
Bash
Executable File
#!/bin/bash
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#
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# Container entrypoint that waits for all spawned processes.
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#
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set -e -u
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# Create a FIFO and start reading from its read end.
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tempdir=$(mktemp -d "/tmp/done.XXXXXXXXXX")
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trap 'rm -r "$tempdir"' EXIT
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done="$tempdir/pipe"
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mkfifo "$done"
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cat "$done" & waiter=$!
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# Start the workload. Its descendants will inherit the FIFO's write end.
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status=0
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if [ "$#" -eq 0 ]; then
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bash 9>"$done" || status=$?
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else
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"$@" 9>"$done" || status=$?
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fi
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# When the workload and all of its descendants exit, the FIFO's write end will
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# be closed and `cat "$done"` will exit. Wait until it happens. This is needed
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# in order to handle SelfUpdater, which the workload may start in background
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# before exiting.
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wait "$waiter"
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exit "$status"
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