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This is the fastest I could get on Intel GCC. I kept the memset() in to clear

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the newly created tuples, but tuples added in the freelist are now cleared in
tupledealloc already (which is very cheap, because we are already
Py_XDECREF'ing all elements anyway).

Python should have a standard Py_ZAP macro like ZAP in pystate.c.
This commit is contained in:
Armin Rigo 2004-03-21 20:27:49 +00:00
parent abce8a681c
commit 56716150e6
1 changed files with 11 additions and 4 deletions
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15
Objects/tupleobject.c
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@ -68,9 +68,8 @@ PyTuple_New(register int size)
op = PyObject_GC_NewVar(PyTupleObject, &PyTuple_Type, size);
if (op == NULL)
return NULL;
memset(op->ob_item, 0, size*sizeof(PyObject*));
}
for (i=0; i < size; i++)
op->ob_item[i] = NULL;
#if MAXSAVESIZE > 0
if (size == 0) {
free_tuples[0] = op;
@ -165,19 +164,27 @@ tupledealloc(register PyTupleObject *op)
Py_TRASHCAN_SAFE_BEGIN(op)
if (len > 0) {
i = len;
while (--i >= 0)
Py_XDECREF(op->ob_item[i]);
#if MAXSAVESIZE > 0
if (len < MAXSAVESIZE &&
num_free_tuples[len] < MAXSAVEDTUPLES &&
op->ob_type == &PyTuple_Type)
{
while (--i >= 0) {
PyObject* o = op->ob_item[i];
if (o != NULL) {
op->ob_item[i] = NULL;
Py_DECREF(o);
}
}
op->ob_item[0] = (PyObject *) free_tuples[len];
num_free_tuples[len]++;
free_tuples[len] = op;
goto done; /* return */
}
else
#endif
while (--i >= 0)
Py_XDECREF(op->ob_item[i]);
}
op->ob_type->tp_free((PyObject *)op);
done: