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wait_server_start: minor efficiency improvement

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In wait_server_start, fork less. When lsof is present, call it on the
expected process. This saves a few percent of execution time on a
lightly loaded machine. Also, sleep for a short duration rather than
using a tight loop.
This commit is contained in:
Gilles Peskine 2017-12-19 13:35:10 +01:00
parent ccbbfdf0d8
commit 80f6be76e0
1 changed files with 19 additions and 20 deletions
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39
tests/ssl-opt.sh
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@ -171,27 +171,26 @@ has_mem_err() {
fi
}
# wait for server to start: two versions depending on lsof availability
wait_server_start() {
if which lsof >/dev/null 2>&1; then
START_TIME=$( date +%s )
DONE=0
# make a tight loop, server usually takes less than 1 sec to start
while [ $DONE -eq 0 ]; do
if lsof -nbi TCP:"$PORT" 2>/dev/null | grep LISTEN >/dev/null
then
DONE=1
elif [ $(( $( date +%s ) - $START_TIME )) -gt $DOG_DELAY ]; then
echo "SERVERSTART TIMEOUT"
echo "SERVERSTART TIMEOUT" >> $SRV_OUT
DONE=1
fi
# Wait for process $2 to be listening on port $1
if type lsof >/dev/null 2>/dev/null; then
wait_server_start() {
START_TIME=$(date +%s)
while ! lsof -a -n -b -i "TCP:$1" -p "$2" >/dev/null 2>/dev/null; do
if [ $(( $(date +%s) - $START_TIME )) -gt $DOG_DELAY ]; then
echo "SERVERSTART TIMEOUT"
echo "SERVERSTART TIMEOUT" >> $SRV_OUT
break
fi
# Linux and *BSD support decimal arguments to sleep. On other
# OSes this may be a tight loop.
sleep 0.1 2>/dev/null || true
done
else
}
else
wait_server_start() {
sleep "$START_DELAY"
fi
}
}
fi
# wait for client to terminate and set CLI_EXIT
# must be called right after starting the client
@ -254,7 +253,7 @@ run_test() {
echo "$SRV_CMD" > $SRV_OUT
$SRV_CMD >> $SRV_OUT 2>&1 &
SRV_PID=$!
wait_server_start
wait_server_start "$PORT" "$SRV_PID"
echo "$CLI_CMD" > $CLI_OUT
eval "$CLI_CMD" >> $CLI_OUT 2>&1 &