Method Preallocate

library/cpp/yt/memory/chunked_output_stream.cpp:110–125

}

char* TChunkedOutputStream::Preallocate(size_t size)
{
    size_t available = CurrentChunk_.Capacity() - CurrentChunk_.Size();
    if (available < size) {
        FinishedSize_ += CurrentChunk_.Size();
        FinishedChunks_.push_back(TrackMemory(
            MemoryUsageTracker_,
            TSharedRef::FromBlob(std::move(CurrentChunk_))));

        CurrentReserveSize_ = std::min(2 * CurrentReserveSize_, MaxReserveSize_);

        CurrentChunk_.Reserve(std::max(RoundUpToPage(size), CurrentReserveSize_));
    }
    UpdateCurrentChunkMemoryUsage();
    return CurrentChunk_.End();
}

void TChunkedOutputStream::Advance(size_t size)
{