Function GetNullFile

cpp/src/arrow/io/file_benchmark.cc:51–57

using internal::Pipe;

std::string GetNullFile() {
#ifdef _WIN32
  return "NUL";
#else
  return "/dev/null";
#endif
}

const std::valarray<int64_t> small_sizes = {8, 24, 33, 1, 32, 192, 16, 40};
const std::valarray<int64_t> large_sizes = {8192, 100000};