Issue #21233: Add new C functions: PyMem_RawCalloc(), PyMem_Calloc(),
PyObject_Calloc(), _PyObject_GC_Calloc(). bytes(int) and bytearray(int) are now
using ``calloc()`` instead of ``malloc()`` for large objects which is faster
and use less memory (until the bytearray buffer is filled with data).
diff --git a/Objects/bytearrayobject.c b/Objects/bytearrayobject.c
index 5b75705..68b9c4a 100644
--- a/Objects/bytearrayobject.c
+++ b/Objects/bytearrayobject.c
@@ -813,9 +813,21 @@
}
else {
if (count > 0) {
- if (PyByteArray_Resize((PyObject *)self, count))
+ void *sval;
+ Py_ssize_t alloc;
+
+ assert (Py_SIZE(self) == 0);
+
+ alloc = count + 1;
+ sval = PyObject_Calloc(1, alloc);
+ if (sval == NULL)
return -1;
- memset(PyByteArray_AS_STRING(self), 0, count);
+
+ PyObject_Free(self->ob_bytes);
+
+ self->ob_bytes = self->ob_start = sval;
+ Py_SIZE(self) = count;
+ self->ob_alloc = alloc;
}
return 0;
}