73636e325f
Signed-off-by: Stacy Harper <contact@stacyharper.net> Signed-off-by: Peter John Hartman <peterjohnhartman@gmail.com>
78 lines
1.0 KiB
Bash
78 lines
1.0 KiB
Bash
#!/bin/sh
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# include common definitions
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# shellcheck source=scripts/core/sxmo_common.sh
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. "$(which sxmo_common.sh)"
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set -e
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MUTEX_NAME="$1"
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shift
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ROOT_DIR="${XDG_RUNTIME_DIR:-$HOME/.local/run}/sxmo_mutex"
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REASON_FILE="$ROOT_DIR/$MUTEX_NAME"
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mkdir -p "$(dirname "$REASON_FILE")"
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touch "$REASON_FILE"
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lock() {
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printf "%s\n" "$1" >> "$REASON_FILE"
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}
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free() {
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grep -xnm1 "$1" "$REASON_FILE" | \
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cut -d: -f1 | \
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xargs -rn1 -I{} sed -i '{}d' "$REASON_FILE"
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}
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lockedby() {
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grep -qxm1 "$1" "$REASON_FILE"
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}
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freeall() {
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printf "" > "$REASON_FILE"
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}
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list() {
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cat "$REASON_FILE"
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}
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hold() {
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if ! [ -s "$REASON_FILE" ]; then
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exit 0
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fi
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FIFO="$(mktemp -u)"
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mkfifo "$FIFO"
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inotifywait -mq -e "close_write" "$ROOT_DIR" >> "$FIFO" &
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NOTIFYPID=$!
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finish() {
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kill "$NOTIFYPID"
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rm "$FIFO"
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exit 0
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}
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trap 'finish' TERM INT EXIT
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while read -r; do
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if ! [ -s "$REASON_FILE" ]; then
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exit 0
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fi
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done < "$FIFO"
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}
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holdexec() {
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finish() {
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kill "$HOLDPID"
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exit
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}
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trap 'finish' TERM INT
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hold &
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HOLDPID=$!
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wait "$HOLDPID"
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"$@"
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}
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"$@"
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