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|
#!/bin/sh
# find the name of the log file to process, it must not start with a dash.
log_file="v8.log"
for arg in "$@"
do
if ! expr "X${arg}" : "^X-" > /dev/null; then
log_file=${arg}
fi
done
tools_path=`cd $(dirname "$0");pwd`
if [ ! "$D8_PATH" ]; then
d8_public=`which d8`
if [ -x "$d8_public" ]; then D8_PATH=$(dirname "$d8_public"); fi
fi
[ -n "$D8_PATH" ] || D8_PATH=$tools_path/..
d8_exec=$D8_PATH/d8
if [ ! -x "$d8_exec" ]; then
D8_PATH=`pwd`/out/native
d8_exec=$D8_PATH/d8
fi
if [ ! -x "$d8_exec" ]; then
d8_exec=`grep -m 1 -o '".*/d8"' $log_file | sed 's/"//g'`
fi
if [ ! -x "$d8_exec" ]; then
echo "d8 shell not found in $D8_PATH"
echo "To build, execute 'make native' from the V8 directory"
exit 1
fi
if [ -n "$DISTORTION" ]; then
distortion=$DISTORTION
else
# Try to find out how much the instrumentation overhead is.
calibration_log=calibration.log
calibration_script="for (var i = 0; i < 1000000; i++) print();"
$d8_exec --nocrankshaft --prof --logfile $calibration_log \
--log-timer-events -e "$calibration_script" > /dev/null
t_1=`grep "V8.Execute" $calibration_log | tail -n1 | awk -F, '{print $4}'`
n_1=`grep "timer-event" $calibration_log | wc -l`
$d8_exec --nocrankshaft --prof --logfile $calibration_log \
--log-internal-timer-events -e "$calibration_script" > /dev/null
t_2=`grep "V8.Execute" $calibration_log | tail -n1 | awk -F, '{print $4}'`
n_2=`grep "timer-event" $calibration_log | wc -l`
rm $calibration_log
# Overhead in picoseconds.
distortion=`echo "1000*($t_1 - $t_2)/($n_1 - $n_2)" | bc`
fi
if [ -n "$PLOT_RANGE" ]; then
plot_range=$PLOT_RANGE
else
plot_range=auto,auto
fi
echo "DISTORTION=$distortion"
echo "PLOT_RANGE=$plot_range"
echo -e "plot-range,$plot_range\ndistortion,$distortion" | cat - $log_file |
$d8_exec $tools_path/csvparser.js \
$tools_path/splaytree.js $tools_path/codemap.js \
$tools_path/logreader.js $tools_path/plot-timer-events.js \
2>/dev/null | gnuplot > timer-events.png
|
