delta/python-packages/zope-interface.git/src/zope/interface/_zope_interface_coptimizations.c, branch issue158

Whitespace.

2020-01-27T13:44:29+00:00

Specifications with no dependents are common (4700 out of 7000 in this example), so avoid allocating a WeakKeyDictionary until needed.

2020-01-27T13:40:36+00:00

This saves another 2% or so.

Move Declaration, Specification and ClassProvides to slots.

2020-01-27T13:40:35+00:00

In a test of 6000 modules that load 2245 InterfaceClass objects and produce 2233 ClassProvides instances, this saves about 1% total memory usage in Python 2.7.

Use tp_members in SpecificationBase and ClassProvidesBase.

2020-01-23T12:39:48+00:00

Instead of storing 1 and 2 attributes, respectively, in __dict__. This lets us eliminate inst_attr and its use of an undocumented API.

It also helps reign in the size of these objects. Before, on CPython 8, a ClassProvides object that subclasses both SpecificationBase and ClassProvidesBase required 408 bytes: 48 for the object, 360 for the dict.

Now it requires 72 + 232 = 304.

With a bit of work on defining __slots__ in Python, that can be brought much lower still, I think.

zope.security tests pass with this installed.

Test PURE_PYTHON at runtime.

2020-01-21T15:38:45+00:00

Turns out that the C extensions build and work fine with PyPy, but don't use them by default. Let them
be forced, though.

Tests needed some refactoring to account for the various permutations.

I removed an unnecessary whitespace.

2017-09-21T01:26:11+00:00

Thank you for follows. I misread it for carriage return.

Fix process of reference count during GC

2017-09-19T07:13:30+00:00

call PyObject_GC_UnTrack() in tp_dealloc()
see the following sites for details:
 * https://bugs.python.org/issue31095
 * https://github.com/python/cpython/pull/2974

Raise ValueError if non-text name passed to adapter registry methods.

2017-05-04T09:50:35+00:00

Prevents corruption of lookup cache.

Alternative to fix proposed in #75.

Don't redefine METH_KEYWORDS

2017-01-05T13:06:42+00:00

Instead, use the intended METH_KEYWORDS | METH_VARARGS spelling.

Fixes #71

Fix C optimizations broken on Py3k.

2016-11-15T19:04:50+00:00

- The bare import of '_zope_c_optimizations' prevented them from being
  used.

- After enabling them via absolute imports, they would fail due to
  http://bugs.python.org/issue15657.

Fixes #60.