Function AllocateBitmap

cpp/src/arrow/buffer.cc:182–189

}

Result<std::shared_ptr<Buffer>> AllocateBitmap(int64_t length, MemoryPool* pool) {
  ARROW_ASSIGN_OR_RAISE(auto buf, AllocateBuffer(bit_util::BytesForBits(length), pool));
  // Zero out any trailing bits
  if (buf->size() > 0) {
    buf->mutable_data()[buf->size() - 1] = 0;
  }
  return buf;
}

Result<std::shared_ptr<Buffer>> AllocateEmptyBitmap(int64_t length, MemoryPool* pool) {
  return AllocateEmptyBitmap(length, kDefaultBufferAlignment, pool);