#!/bin/bash

set -e

if [ -z "$SPEC" ]; then
  SPEC=$(spec-cpu-mini)
fi

if [ -z "$SPEC" ]; then
  echo "cannot find spec, set SPEC variable"
  exit 1
fi

where=$TMPDIR
if [ -z "$where" ]; then
  if [ -d /tmp ]; then
    where=/tmp
  else
    where=$PWD
  fi
fi

cwd=$(readlink -f $where)
# Place the outcome here
wd="$cwd/spec"
mkdir -p "$wd"

benchniter=1
benchsize=test
benchtune=base

echo "--- Placing output in $wd ---"

printf 'benchmark\tsize\ttune\titer\ttime_s\n' > "$wd/time.csv"

for srcbench in $SPEC/benchspec/CPU/*; do
  name=$(basename $srcbench)
  bench="$wd/$name"
  bench_out="$wd/$name.csv"
  rm -rf "$bench"
  cp -r "$srcbench" "$bench"
  chmod +w -R "$bench"

  rundir="$bench/run/run_${benchtune}_${benchsize}_nix-m64.0000"
  sed -i '/^-C/d' "$rundir/speccmds.cmd"
  echo "--- Running $name for $benchniter iterations ---"
  (
    #set -x
    cd $rundir
    specinvoke -i $benchniter -E speccmds.cmd > /dev/null
    #set +x
  )
  # Print time
  awk '/^run [0-9]* elapsed time/{printf \
    "%s\t%s\t%s\t%s\t%s\n", \
    "'$name'","'$benchsize'","'$benchtune'",$2,$7}' \
    "$rundir/speccmds.out" > "$bench_out"

  cat "$bench_out"

  # Accumulate in main CSV
  cat "$bench_out" >> "$wd/time.csv"

  # Erase intermediate files as they occupy RAM.
  rm -rf "$bench"
done

echo "--- RESULTS in $wd/time.csv ---"
cat "$wd/time.csv"
echo "---------------------------------------"