Detect failures to explicitly close mmaps in py3 too

[bup.git] / lib / bup / compat.py

diff --git a/lib/bup/compat.py b/lib/bup/compat.py
index 9def12a9d729a7044a6102381d94d772ef31564b..00575036e27cc46f7fb6b3408e273831526b9daa 100644 (file)
--- a/lib/bup/compat.py
+++ b/lib/bup/compat.py
@@ -14,7 +14,6 @@ if py3:
 
     # pylint: disable=unused-import
     from contextlib import ExitStack, nullcontext
-    from mmap import mmap
     from os import environb as environ
     from os import fsdecode, fsencode
     from shlex import quote
@@ -89,7 +88,6 @@ if py3:
 else:  # Python 2
 
     from contextlib import contextmanager
-    import mmap as py_mmap
 
     ModuleNotFoundError = ImportError
 
@@ -225,30 +223,6 @@ else:  # Python 2
 
     buffer = buffer
 
-    assert not hasattr(py_mmap.mmap, '__del__')
-    assert not hasattr(py_mmap.mmap, '__enter__')
-    assert not hasattr(py_mmap.mmap, '__exit__')
-
-    class mmap(py_mmap.mmap):
-        def __init__(self, *args, **kwargs):
-            self._bup_closed = True
-            # Silence deprecation warnings.  mmap's current parent is
-            # object, which accepts no params and as of at least 2.7
-            # warns about them.
-            if py_mmap.mmap.__init__ is not object.__init__:
-                super(mmap, self).__init__(self, *args, **kwargs)
-            self._bup_closed = False
-        def close(self):
-            self._bup_closed = True
-            super(mmap, self).close()
-        def __enter__(self):
-            return self
-        def __exit__(self, type, value, traceback):
-            with pending_raise(value, rethrow=False):
-                self.close()
-        def __del__(self):
-            assert self._bup_closed
-
 try:
     import bup_main
 except ModuleNotFoundError: