Method makeContinuousMemoryFromCheckpointToPos

src/IO/PeekableReadBuffer.cpp:265–280

}

void PeekableReadBuffer::makeContinuousMemoryFromCheckpointToPos()
{
    if (!checkpoint)
        throw DB::Exception("There is no checkpoint", ErrorCodes::LOGICAL_ERROR);
    checkStateCorrect();

    if (!checkpointInOwnMemory() || currentlyReadFromOwnMemory())
        return;     /// it's already continuous

    size_t bytes_to_append = pos - sub_buf.position();
    resizeOwnMemoryIfNecessary(bytes_to_append);
    memcpy(memory.data() + peeked_size, sub_buf.position(), bytes_to_append);
    sub_buf.position() = pos;
    peeked_size += bytes_to_append;
    BufferBase::set(memory.data(), peeked_size, peeked_size);
}

PeekableReadBuffer::~PeekableReadBuffer()
{