.

bigfile/_file_zodb.pyx

@@ -54,15 +54,14 @@ from wendelin.lib.zodb import zconn_at
 # - provides blkmmapper with WCFS integration.
 cdef public class _ZBigFile(BigFile) [object _ZBigFile, type _ZBigFile_Type]:
     cdef object     zself   # reference to ZBigFile
-#   cdef wcfs.Oid   foid    # = .zself._p_oid
     cdef wcfs.FileH wfileh  # WCFS file handle. Initially nil, opened by blkmmapper
 
+    # _new creates new _ZBigFile associated with ZBigFile zself.
     # XXX Cython does not allow __new__ nor to change arguments passed to __cinit__ / __init__
     @staticmethod
     def _new(zself, blksize):
         cdef _ZBigFile obj = _ZBigFile.__new__(_ZBigFile, blksize)
         obj.zself  = zself
-#       obj.foid   = -1  # Note: zself._p_oid could be yet None for newly created ZBigFile
         obj.wfileh = nil
         return obj
 
@@ -70,12 +69,13 @@ cdef public class _ZBigFile(BigFile) [object _ZBigFile, type _ZBigFile_Type]:
         zf.wfileh = nil
 
 
-    # redirect load/store/mapper to main class
+    # redirect load/store to main class
     def loadblk(self, blk, buf):    return self.zself.loadblk(blk, buf)
     def storeblk(self, blk, buf):   return self.zself.storeblk(blk, buf)
-    #def blkmmapper(self):           return self.zself.blkmmapper()
 
-    # blkmmapper serves PyBigFile and gives it XXX ...
+    # blkmmapper returns pycapsule with virtmem mmapper for the file.
+    #
+    # XXX
     #
     # it is called from PyBigFile.fileh_open(mmap_overlay=True) and .zfile
     # should be already associated with jar and have oid.
@@ -85,7 +85,6 @@ cdef public class _ZBigFile(BigFile) [object _ZBigFile, type _ZBigFile_Type]:
             zconn = zf.zself._p_jar
             assert zconn is not None
             # XXX locking? or rely on that ZODB objects for must be used from under 1 thread only?
-#           zf.foid = u64(zf.zself._p_oid)
 
             # join zconn to wconn; link to wconn from _ZBigFile
             pywconn   = pywconnOf(zconn)