#!/bin/bash

# Save path the current path that will be used to store the results.
BASE_PATH=$(pwd)


# Local variable to store if cpu or gpu directed benchmark
TYPE=$3

# Check if we need to create the directories to store the results
if [ ! -d "results" ]; then
    mkdir results
fi

if [ ! -d "results/$TYPE" ]; then
    mkdir results/$TYPE
fi


# Start power measurement
./SmartPower results/$TYPE/power-usage.csv & export PID_POWER=$!
echo $PID_POWER


# Enter in the directory passed as first parameter, then execute run and save the results in the file passed as second parameter
cd $1
BENCH_NAME=$1

# Start and time the actual benchmark
BENCH_TIME=`(/usr/bin/time -f "%e" ./run-$TYPE) 2>&1 > /dev/zero | tail -1`

# Stop power measurement
kill -SIGUSR1 $PID_POWER

# Add an additional SIGKILL to avoid zombie processes in case of a faulty measurement
kill -SIGKILL $PID_POWER

# Wait until the Smartpower utility has received the kill signal and force a sync on the disk to avoid reading the previous result

sleep 5 && sync


# Save execution time in the log
echo "$BENCH_NAME $BENCH_TIME" >> $BASE_PATH/results/$TYPE/$2

# Prepare a log that contains all the info relative to a benchmark
# To retrieve the power measurement we take the third column of the last row from the file where the measurement utility has saved the results
BENCH_CONSUMPTION=`tail -1 $BASE_PATH/results/$TYPE/power-usage.csv | awk '{print $3}' | cut -d, -f2`
echo "$BENCH_NAME $BENCH_TIME $BENCH_CONSUMPTION" >> $BASE_PATH/results/$TYPE/total.dat


# Sleep in order to give time to the power measurement script to reset.
sleep 3