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Issue #23601: Use small object allocator for dict key objects

This commit is contained in:
Raymond Hettinger 2016-01-31 08:56:21 -08:00
parent 89e54338d0
commit ce5179fcba
2 changed files with 6 additions and 3 deletions
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3
Misc/NEWS
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@ -18,6 +18,9 @@ Core and Builtins
by external AST optimizers, but the compiler does not emit directly such
node.
- Issue #23601: Sped-up allocation of dict key objects by using Python's
small object allocator. (Contributed by Julian Taylor.)
- Issue #18018: Import raises ImportError instead of SystemError if a relative
import is attempted without a known parent package.

6
Objects/dictobject.c
View File

@ -324,7 +324,7 @@ static PyDictKeysObject *new_keys_object(Py_ssize_t size)
assert(size >= PyDict_MINSIZE_SPLIT);
assert(IS_POWER_OF_2(size));
dk = PyMem_MALLOC(sizeof(PyDictKeysObject) +
dk = PyObject_MALLOC(sizeof(PyDictKeysObject) +
sizeof(PyDictKeyEntry) * (size-1));
if (dk == NULL) {
PyErr_NoMemory();
@ -353,7 +353,7 @@ free_keys_object(PyDictKeysObject *keys)
Py_XDECREF(entries[i].me_key);
Py_XDECREF(entries[i].me_value);
}
PyMem_FREE(keys);
PyObject_FREE(keys);
}
#define new_values(size) PyMem_NEW(PyObject *, size)
@ -964,7 +964,7 @@ dictresize(PyDictObject *mp, Py_ssize_t minused)
}
}
assert(oldkeys->dk_refcnt == 1);
DK_DEBUG_DECREF PyMem_FREE(oldkeys);
DK_DEBUG_DECREF PyObject_FREE(oldkeys);
}
return 0;
}