Method Read

src/leveldb/util/env_windows.cc:156–169

  ~WindowsSequentialFile() override {}

  Status Read(size_t n, Slice* result, char* scratch) override {
    DWORD bytes_read;
    // DWORD is 32-bit, but size_t could technically be larger. However leveldb
    // files are limited to leveldb::Options::max_file_size which is clamped to
    // 1<<30 or 1 GiB.
    assert(n <= std::numeric_limits<DWORD>::max());
    if (!::ReadFile(handle_.get(), scratch, static_cast<DWORD>(n), &bytes_read,
                    nullptr)) {
      return WindowsError(filename_, ::GetLastError());
    }

    *result = Slice(scratch, bytes_read);
    return Status::OK();
  }

  Status Skip(uint64_t n) override {
    LARGE_INTEGER distance;