Method append

be/src/kudu/util/faststring.h:147–166

Append the given data to the string, resizing capacity as necessary.

  // Append the given data to the string, resizing capacity as necessary.
  void append(const void *src_v, size_t count) {
    const uint8_t *src = reinterpret_cast<const uint8_t *>(src_v);
    EnsureRoomForAppend(count);
    ASAN_UNPOISON_MEMORY_REGION(data_ + len_, count);

    // appending short values is common enough that this
    // actually helps, according to benchmarks. In theory
    // memcpy_inlined should already be just as good, but this
    // was ~20% faster for reading a large prefix-coded string file
    // where each string was only a few chars different
    if (count <= 4) {
      uint8_t *p = &data_[len_];
      for (int i = 0; i < count; i++) {
        *p++ = *src++;
      }
    } else {
      strings::memcpy_inlined(&data_[len_], src, count);
    }
    len_ += count;
  }

  // Append the given string to this string.
  void append(const std::string &str) {