Function MakeLargeString

cpp/src/arrow/util/utf8_util_benchmark.cc:52–60

    "とUnicodeで使える8ビット符号単位の文字符号化形式及び文字符号化スキーム。 ";

static std::string MakeLargeString(const std::string& base, int64_t nbytes) {
  int64_t nrepeats = (nbytes + base.size() - 1) / base.size();
  std::string s;
  s.reserve(nrepeats * nbytes);
  for (int64_t i = 0; i < nrepeats; ++i) {
    s += base;
  }
  return s;
}

static void BenchmarkUTF8Validation(
    benchmark::State& state,  // NOLINT non-const reference