Method AllocateBitmap

cpp/src/arrow/compute/kernel.cc:52–60

}

Result<std::shared_ptr<ResizableBuffer>> KernelContext::AllocateBitmap(int64_t num_bits) {
  const int64_t nbytes = bit_util::BytesForBits(num_bits);
  ARROW_ASSIGN_OR_RAISE(std::shared_ptr<ResizableBuffer> result,
                        AllocateResizableBuffer(nbytes, exec_ctx_->memory_pool()));
  // Since bitmaps are typically written bit by bit, we could leak uninitialized bits.
  // Make sure all memory is initialized (this also appeases Valgrind).
  std::memset(result->mutable_data(), 0, result->size());
  return result;
}

Status Kernel::InitAll(KernelContext* ctx, const KernelInitArgs& args,
                       std::vector<std::unique_ptr<KernelState>>* states) {