All tests work, bumped version

Author: Byron

doc/source/changes.rst

@@ -3,7 +3,7 @@ Changelog
 #########
 
 **********
-v0.8.6
+v0.9.0
 **********
 - Fixed issue with resources never being freed as mmaps were never closed.
 - Client counting is now done manually, instead of relying on pyton's reference count

smmap/__init__.py

@@ -3,7 +3,7 @@
 __author__ = "Sebastian Thiel"
 __contact__ = "[email protected]"
 __homepage__ = "https://github.com/Byron/smmap"
-version_info = (0, 8, 5)
+version_info = (0, 9, 0)
 __version__ = '.'.join(str(i) for i in version_info)
 
 # make everything available in root package for convenience

smmap/buf.py

@@ -93,6 +93,7 @@ def __getslice__(self, i, j):
                     l -= len(d)
                     # This is slower than the join ... but what can we do ... 
                     out += d
+                    del(d)
                 # END while there are bytes to read
                 return out
             else:
@@ -103,6 +104,10 @@ def __getslice__(self, i, j):
                     d = c.buffer()[:l]
                     ofs += len(d)
                     l -= len(d)
+                    # Make sure we don't keep references, as c.use_region() might attempt to free resources, but 
+                    # can't unless we use pure bytes
+                    if hasattr(d, 'tobytes'):
+                        d = d.tobytes()
                     md.append(d)
                 # END while there are bytes to read
                 return bytes().join(md)

smmap/mman.py

@@ -58,7 +58,7 @@ def _destroy(self):
                     # Free all resources associated with the mapped file
                     self._manager._fdict.pop(self._rlist.path_or_fd())
                 # END remove regions list from manager
-            except TypeError:
+            except (TypeError, KeyError):
                 # sometimes, during shutdown, getrefcount is None. Its possible
                 # to re-import it, however, its probably better to just ignore
                 # this python problem (for now).
@@ -70,11 +70,14 @@ def _destroy(self):
     def _copy_from(self, rhs):
         """Copy all data from rhs into this instance, handles usage count"""
         self._manager = rhs._manager
-        self._rlist = rhs._rlist
+        self._rlist = type(rhs._rlist)(rhs._rlist)
         self._region = rhs._region
         self._ofs = rhs._ofs
         self._size = rhs._size
 
+        for region in self._rlist:
+            region.increment_client_count()
+
         if self._region is not None:
             self._region.increment_client_count()
         # END handle regions

smmap/test/test_buf.py

@@ -12,7 +12,6 @@
 from time import time
 import sys
 import os
-import logging
 
 
 man_optimal = SlidingWindowMapManager()
@@ -104,6 +103,7 @@ def test_basics(self):
                             assert len(d) == ofs_end - ofs_start
                             assert d == data[ofs_start:ofs_end]
                             num_bytes += len(d)
+                            del d
                         else:
                             pos = randint(0, fsize)
                             assert buf[pos] == data[pos]
@@ -122,6 +122,7 @@ def test_basics(self):
                           % (man_id, max_num_accesses, mode_str, type(item), num_bytes / mb, elapsed, (num_bytes / mb) / elapsed),
                           file=sys.stderr)
                 # END handle access mode
+                del buf
             # END for each manager
         # END for each input
         os.close(fd)