Function __write_request

system/lib/libcxx/include/__format/buffer.h:65–70

This function adjusts the size of a (bulk) write operations. It ensures the number of code units written by a __output_buffer never exceeds __max_size_ code units.

  // number of code units written by a __output_buffer never exceeds
  // __max_size_ code units.
  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI size_t __write_request(size_t __code_units) {
    size_t __result =
        __code_units_written_ < __max_size_ ? std::min(__code_units, __max_size_ - __code_units_written_) : 0;
    __code_units_written_ += __code_units;
    return __result;
  }

  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI size_t __code_units_written() const noexcept { return __code_units_written_; }