mercurial/revlogutils/nodemap.py

51150:1486d8c63f64

            with revlog.opener(datafile, b'r+') as fd:
                fd.seek(target_docket.data_length)
                fd.write(data)
                if feed_data:
                    if use_mmap:
                        fd.seek(0)
                        new_data = fd.read(new_length)
                    else:
                        fd.flush()
                        new_data = util.buffer(util.mmapread(fd, new_length))
            target_docket.data_length = new_length
            target_docket.data_unused = new_unused

    if data is None:
        # otherwise fallback to a full new export

51151:85d96517e650

            with revlog.opener(datafile, b'r+') as fd:
                fd.seek(target_docket.data_length)
                fd.write(data)
                if feed_data:
                    if use_mmap:
                        fd.flush()
                        new_data = util.buffer(util.mmapread(fd, new_length))
                    else:
                        fd.seek(0)
                        new_data = fd.read(new_length)
            target_docket.data_length = new_length
            target_docket.data_unused = new_unused

    if data is None:
        # otherwise fallback to a full new export