libcxx/utils/libcxx-benchmark-json

   1 #!/usr/bin/env bash
   2
   3 set -e
   4
   5 PROGNAME="$(basename "${0}")"
   6 MONOREPO_ROOT="$(realpath $(dirname "${PROGNAME}"))"
   7 function usage() {
   8 cat <<EOF
   9 Usage:
  10 ${PROGNAME} [-h|--help] <build-directory> benchmarks...
  11
  12 Print the path to the JSON files containing benchmark results for the given benchmarks.
  13
  14 This requires those benchmarks to have already been run, i.e. this only resolves the path
  15 to the benchmark .json file within the build directory.
  16
  17 <build-directory>  The path to the build directory.
  18 benchmarks...      Paths of the benchmarks to extract the results for. Those paths are relative to '<monorepo-root>'.
  19
  20 Example
  21 =======
  22 $ cmake -S runtimes -B build/ -DLLVM_ENABLE_RUNTIMES="libcxx;libcxxabi"
  23 $ libcxx-lit build/ -sv libcxx/test/benchmarks/algorithms/for_each.bench.cpp
  24 $ less \$(${PROGNAME} build/ libcxx/test/benchmarks/algorithms/for_each.bench.cpp)
  25 EOF
  26 }
  27
  28 if [[ "${1}" == "-h" || "${1}" == "--help" ]]; then
  29     usage
  30     exit 0
  31 fi
  32
  33 if [[ $# -lt 1 ]]; then
  34     usage
  35     exit 1
  36 fi
  37
  38 build_dir="${1}"
  39 shift
  40
  41 for benchmark in ${@}; do
  42     # Normalize the paths by turning all benchmarks paths into absolute ones and then making them
  43     # relative to the root of the monorepo.
  44     benchmark="$(realpath ${benchmark})"
  45     relative=$(python -c "import os; import sys; print(os.path.relpath(sys.argv[1], sys.argv[2]))" "${benchmark}" "${MONOREPO_ROOT}")
  46
  47     # Extract components of the benchmark path
  48     directory="$(dirname ${relative})"
  49     file="$(basename ${relative})"
  50
  51     # Reconstruct the (slightly weird) path to the benchmark json file. This should be kept in sync
  52     # whenever the test suite changes.
  53     json="${build_dir}/${directory}/Output/${file}.dir/benchmark-result.json"
  54     if [[ -f "${json}" ]]; then
  55         echo "${json}"
  56     fi
  57 done