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Enable GC for new-style instances. This touches lots of files, since

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many types were subclassable but had a xxx_dealloc function that
called PyObject_DEL(self) directly instead of deferring to
self->ob_type->tp_free(self).  It is permissible to set tp_free in the
type object directly to _PyObject_Del, for non-GC types, or to
_PyObject_GC_Del, for GC types.  Still, PyObject_DEL was a tad faster,
so I'm fearing that our pystone rating is going down again.  I'm not
sure if doing something like

void xxx_dealloc(PyObject *self)
{
	if (PyXxxCheckExact(self))
		PyObject_DEL(self);
	else
		self->ob_type->tp_free(self);
}

is any faster than always calling the else branch, so I haven't
attempted that -- however those types whose own dealloc is fancier
(int, float, unicode) do use this pattern.
This commit is contained in:
Guido van Rossum 2001-10-05 20:51:39 +00:00
parent be63884d50
commit 9475a2310d
13 changed files with 90 additions and 26 deletions
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8
Objects/floatobject.c
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@ -182,8 +182,12 @@ PyFloat_FromString(PyObject *v, char **pend)
static void
float_dealloc(PyFloatObject *op)
{
op->ob_type = (struct _typeobject *)free_list;
free_list = op;
if (PyFloat_CheckExact(op)) {
op->ob_type = (struct _typeobject *)free_list;
free_list = op;
}
else
op->ob_type->tp_free((PyObject *)op);
}
double