src/v8/tools/plot-timer-events

   1 #!/bin/sh
   2
   3 # find the name of the log file to process, it must not start with a dash.
   4 log_file="v8.log"
   5 for arg in "$@"
   6 do
   7   if ! expr "X${arg}" : "^X-" > /dev/null; then
   8     log_file=${arg}
   9   fi
  10 done
  11
  12 tools_path=`cd $(dirname "$0");pwd`
  13 if [ ! "$D8_PATH" ]; then
  14   d8_public=`which d8`
  15   if [ -x "$d8_public" ]; then D8_PATH=$(dirname "$d8_public"); fi
  16 fi
  17 [ -n "$D8_PATH" ] || D8_PATH=$tools_path/..
  18 d8_exec=$D8_PATH/d8
  19
  20 if [ ! -x "$d8_exec" ]; then
  21   D8_PATH=`pwd`/out/native
  22   d8_exec=$D8_PATH/d8
  23 fi
  24
  25 if [ ! -x "$d8_exec" ]; then
  26   d8_exec=`grep -m 1 -o '".*/d8"' $log_file | sed 's/"//g'`
  27 fi
  28
  29 if [ ! -x "$d8_exec" ]; then
  30   echo "d8 shell not found in $D8_PATH"
  31   echo "To build, execute 'make native' from the V8 directory"
  32   exit 1
  33 fi
  34
  35 if [[ "$@" != *--distortion* ]]; then
  36   # Try to find out how much the instrumentation overhead is.
  37   calibration_log=calibration.log
  38   calibration_script="for (var i = 0; i < 1000000; i++) print();"
  39
  40   $d8_exec --nocrankshaft --prof --logfile $calibration_log \
  41        --log-timer-events -e "$calibration_script" > /dev/null
  42   t_1_start=`grep "timer-event-start,\"V8.Execute\"" $calibration_log  \
  43        | tail -n1 | awk -F, '{print $3}'`
  44   t_1_end=`grep "timer-event-end,\"V8.Execute\"" $calibration_log  \
  45        | tail -n1 | awk -F, '{print $3}'`
  46   n_1=`grep "timer-event\|tick" $calibration_log  | wc -l`
  47
  48   $d8_exec --nocrankshaft --prof --logfile $calibration_log \
  49        --log-internal-timer-events -e "$calibration_script" > /dev/null
  50   t_2_start=`grep "timer-event-start,\"V8.Execute\"" $calibration_log  \
  51        | tail -n1 | awk -F, '{print $3}'`
  52   t_2_end=`grep "timer-event-end,\"V8.Execute\"" $calibration_log  \
  53        | tail -n1 | awk -F, '{print $3}'`
  54   n_2=`grep "timer-event\|tick" $calibration_log  | wc -l`
  55
  56   rm $calibration_log
  57
  58   # Overhead in picoseconds.
  59   options=--distortion=
  60   options+=`echo "1000*(($t_1_end - $t_1_start) - ($t_2_end - $t_2_start)) \
  61               / ($n_1 - $n_2)" | bc`
  62   echo $options
  63 fi
  64
  65 cat $log_file |
  66     $d8_exec $tools_path/csvparser.js $tools_path/splaytree.js \
  67     $tools_path/codemap.js $tools_path/profile.js $tools_path/profile_view.js \
  68     $tools_path/logreader.js $tools_path/tickprocessor.js \
  69     $tools_path/profviz/composer.js $tools_path/profviz/stdio.js \
  70     -- $@ $options 2>/dev/null > timer-events.plot
  71
  72 success=$?
  73 if [[ $success != 0 ]] ; then
  74     cat timer-events.plot
  75 else
  76     cat timer-events.plot | gnuplot > timer-events.png
  77 fi
  78
  79 rm -f timer-events.plot