Method GoBackToLastBlock

src/log/log_reader.cc:269–280

}

void Reader::GoBackToLastBlock() {
    size_t offset_in_block = last_end_of_buffer_offset_ % block_size_;
    uint64_t block_start_location = 0;
    if (last_end_of_buffer_offset_ > offset_in_block) {
        block_start_location = last_end_of_buffer_offset_ - offset_in_block;
    }
    DEBUGLOG("go back block from[%lu] to [%lu]", end_of_buffer_offset_,
          block_start_location);
    end_of_buffer_offset_ = block_start_location;
    buffer_.clear();
    file_->Seek(block_start_location);
}

void Reader::GoBackToStart() {
    uint64_t block_start_location = 0;