Commit Graph

20 Commits

Author SHA1 Message Date
Neal Norwitz c5e060dee6 _PyWeakref_GetWeakrefCount() now returns a Py_ssize_t instead of long. 2006-08-02 06:14:22 +00:00
Fred Drake 0a4dd390bf Make weak references subclassable:
- weakref.ref and weakref.ReferenceType will become aliases for each
  other

- weakref.ref will be a modern, new-style class with proper __new__
  and __init__ methods

- weakref.WeakValueDictionary will have a lighter memory footprint,
  using a new weakref.ref subclass to associate the key with the
  value, allowing us to have only a single object of overhead for each
  dictionary entry (currently, there are 3 objects of overhead per
  entry: a weakref to the value, a weakref to the dictionary, and a
  function object used as a weakref callback; the weakref to the
  dictionary could be avoided without this change)

- a new macro, PyWeakref_CheckRefExact(), will be added

- PyWeakref_CheckRef() will check for subclasses of weakref.ref

This closes SF patch #983019.
2004-07-02 18:57:45 +00:00
Fred Drake 610291cf5a Fix ref(), proxy() docstrings, based on comments from David Abrahams. 2002-08-02 20:23:40 +00:00
Mark Hammond fe51c6d66e Excise DL_EXPORT/DL_IMPORT from Modules/*. Required adding a prototype
for Py_Main().

Thanks to Kalle Svensson and Skip Montanaro for the patches.
2002-08-02 02:27:13 +00:00
Martin v. Löwis 14f8b4cfcb Patch #568124: Add doc string macros. 2002-06-13 20:33:02 +00:00
Fred Drake 0d429e8cdd Convert the ref() and proxy() implementations to use the new
PyArg_UnpackTuple() function (serves as an example and test case).
2001-10-23 21:12:47 +00:00
Fred Drake f7f8cad548 Adjust the _weakref module to use the public API for the weak reference
objects.  This is now simply a shim to give weakref.py access to the
underlying implementation.
2001-10-05 22:00:24 +00:00
Neil Schemenauer e83c00efd0 Use new GC API. 2001-08-29 23:54:21 +00:00
Fred Drake 7fdc0a1835 Use METH_O where possible (two functions). This does not lead to real
performance changes since the affected functions are not expected to be
used frequently, but reduces the volume of code.
2001-08-16 14:11:30 +00:00
Fred Drake 9b03e59deb Remove an obsolete comment and a "return" before fallig off the end of a
void function.
2001-05-03 16:05:46 +00:00
Fred Drake 2a5a5ca012 cleanup_helper(): Make sure we invalidate all reference objects
before calling any callbacks.  This is important
                   since the callback objects only look at themselves
                   to determine that they are invalide.  This change
                   avoids a segfault when callbacks use a different
                   reference to an object in the process of being
                   deallocated.

This fixes SF bug #415660.
2001-04-13 17:15:47 +00:00
Tim Peters a5d7b748d9 Revert the 1.8 patch, since it's implicated in nasty blowups (see Pyhon-Dev). 2001-03-23 06:14:28 +00:00
Fred Drake 82f1480d63 Inform the cycle-detector that the a weakref object no longer needs to be
tracked as soon as it is clear; this can decrease the number of roots for
the cycle detector sooner rather than later in applications which hold on
to weak references beyond the time of the invalidation.
2001-03-22 18:05:30 +00:00
Martin v. Löwis 5e1633365d Patch #403985: Add support for weak-keyed dictionaries 2001-02-27 18:36:56 +00:00
Fred Drake 32efcdbceb cleanup_helper(): Added missing "void" type for the function, updated
comments to reflect reality.
2001-02-26 20:10:51 +00:00
Fred Drake b60654bc15 The return value from PyObject_ClearWeakRefs() is no longer meaningful,
so make it void.
2001-02-26 18:56:37 +00:00
Fred Drake 7855aba6bb Move docstrings out of function table to constants defined near the
function implementations.
2001-02-18 05:20:18 +00:00
Tim Peters 231e22facb Repair legit compiler warning. 2001-02-02 21:10:53 +00:00
Tim Peters 747d5b63db Teach Windows build about the _weakref module. 2001-02-02 00:07:07 +00:00
Fred Drake 41deb1efc2 PEP 205, Weak References -- initial checkin. 2001-02-01 05:27:45 +00:00