60 calcsize = struct.calcsize

    60 calcsize = struct.calcsize

    61 pack_into = struct.pack_into

    61 pack_into = struct.pack_into

    62 unpack_from = struct.unpack_from

    62 unpack_from = struct.unpack_from

    63 

    63 

    64 

    64 

    66     """mapping of filtered views of repo with their branchcache"""

    66     """mapping of filtered views of repo with their branchcache"""

    67 

    67 

    68     def __init__(self):

    68     def __init__(self):

    69         self._per_filter = {}

    69         self._per_filter = {}

    70 

    70 

   167         return b'branch cache (%s)' % repo.filtername

   167         return b'branch cache (%s)' % repo.filtername

   168     else:

   168     else:

   169         return b'branch cache'

   169         return b'branch cache'

   170 

   170 

   171 

   171 

   173     """A dict like object that hold branches heads cache.

   173     """A dict like object that hold branches heads cache.

   174 

   174 

   175     This cache is used to avoid costly computations to determine all the

   175     This cache is used to avoid costly computations to determine all the

   176     branch heads of a repo.

   176     branch heads of a repo.

   177 

   177 

   629 _rbcnodelen = 4

   629 _rbcnodelen = 4

   630 _rbcbranchidxmask = 0x7FFFFFFF

   630 _rbcbranchidxmask = 0x7FFFFFFF

   631 _rbccloseflag = 0x80000000

   631 _rbccloseflag = 0x80000000

   632 

   632 

   633 

   633 

   635     """Persistent cache, mapping from revision number to branch name and close.

   635     """Persistent cache, mapping from revision number to branch name and close.

   636     This is a low level cache, independent of filtering.

   636     This is a low level cache, independent of filtering.

   637 

   637 

   638     Branch names are stored in rbc-names in internal encoding separated by 0.

   638     Branch names are stored in rbc-names in internal encoding separated by 0.

   639     rbc-names is append-only, and each branch name is only stored once and will

   639     rbc-names is append-only, and each branch name is only stored once and will