msc

#!/usr/bin/bash

#  Copyright 2023 University of Adelaide
#
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.

set -e

MS_PATH=$(realpath "$(dirname "${0}")/../ms")
print_usage() {

  echo "Usage:"
  echo "This is a wrapper-script around the 'ms'-tool."
  echo "Use this script if you want to compare multiple files against baseline."
  echo "All parameters are passed to the '${MS_PATH}' binary and after execution the JSON output is parsed."
  echo "All resulting median values will displayed; the first one is considered the baseline, all others will be divided by that baseline."

  echo -e "\nE.g. ${0} base.asm try-x.asm try-y.asm\n" \
    "Cycles (#3): 8228 8259 8280\n" \
    "    8228 / 8228 =   1.0000 (base.asm)\n" \
    "    8259 / 8228 =   1.0038 (try-x.asm)\n" \
    "    8280 / 8228 =   1.0063 (try-y.asm)\n"

}

# check arguments
if [[ ${#} -lt 2 ]]; then
  print_usage
  exit 1
fi
case $1 in
"--help")
  print_usage
  exit 1
  ;;
"-h")
  print_usage
  exit 1
  ;;
esac

# check dependency programs
for dependency in jq sed calc; do
  which ${dependency} >/dev/null || echo "need '${dependency}' to be installed"
done

# run the measuremets and parse JSON
read -r -a cycles < <(${MS_PATH} "${@}" |
  jq --raw-output '.cycles | map(sort) | map(.[14]) | join(" ")')

# find the arguments which are files
files=()
for arg in "${@}"; do
  if [[ ! "${arg}" =~ ^-.* ]]; then
    ls "${arg}" >/dev/null && files+=("${arg}")
  fi
done

# print all the results
i=0
echo "Cycles (#${#cycles[@]}): ${cycles[*]}"
while [ "${i}" -lt "${#cycles[@]}" ]; do

  term="${cycles[${i}]} / ${cycles[0]}"
  printf "%15s = \033[33m%8.4f\033[0m (%s)\n" "${term}" "$(calc -dp <<<"${term}")" "${files[$i]}"

  i=$((i + 1))
done