Function do_allocate

system/lib/libcxx/src/memory_resource.cpp:42–55

class _LIBCPP_HIDDEN __new_delete_memory_resource_imp : public memory_resource {
  void* do_allocate(size_t bytes, size_t align) override {
#if _LIBCPP_HAS_ALIGNED_ALLOCATION
    return std::__libcpp_allocate<std::byte>(__element_count(bytes), align);
#else
    if (bytes == 0)
      bytes = 1;
    std::byte* result = std::__libcpp_allocate<std::byte>(__element_count(bytes), align);
    if (!is_aligned_to(result, align)) {
      std::__libcpp_deallocate<std::byte>(result, __element_count(bytes), align);
      std::__throw_bad_alloc();
    }
    return result;
#endif
  }

  void do_deallocate(void* p, size_t bytes, size_t align) override {
    std::__libcpp_deallocate<std::byte>(static_cast<std::byte*>(p), __element_count(bytes), align);