22 lines
591 B
Bash
22 lines
591 B
Bash
# Wait until $condition is true, retrying every $intervalMs milliseconds.
|
|
# Print a '.' character every second as a progress indicator.
|
|
waitUntil() {
|
|
condition=$1
|
|
intervalMs=$2
|
|
|
|
lastDotTime=$(getTimeMs)
|
|
while ! { t0=$(getTimeMs); eval "$condition"; }; do
|
|
now=$(getTimeMs)
|
|
if ((now - lastDotTime >= 1000)); then
|
|
printf .
|
|
lastDotTime=$now
|
|
fi
|
|
toSleep=$((t0 + intervalMs - now))
|
|
if ((toSleep > 0)); then
|
|
sleep $((toSleep / 1000)).$((toSleep % 1000));
|
|
fi
|
|
done
|
|
}
|
|
|
|
getTimeMs() { date +%s%3N; }
|