[GitHub] [arrow-adbc] paleolimbot commented on a diff in pull request #702: feat(python/adbc_driver_manager): experiment with using PyCapsules

["paleolimbot (via GitHub)" <gi...@apache.org>]

paleolimbot commented on code in PR #702:
URL: https://github.com/apache/arrow-adbc/pull/702#discussion_r1204467469


##########
python/adbc_driver_manager/adbc_driver_manager/_lib.pyx:
##########
@@ -460,6 +461,18 @@ cdef class _AdbcHandle:
                     f"with open {self._child_type}")
 
 
+cdef void pycapsule_stream_deleter(object stream_capsule):
+    cdef:
+        CArrowArrayStream* stream
+    # Do not invoke the deleter on a used/moved capsule
+    stream = <CArrowArrayStream*>cpython.PyCapsule_GetPointer(
+        stream_capsule, 'arrowarraystream'
+    )

Review Comment:
   Is there any situation in which `stream` can be NULL? (In R this happens if somebody tries the equivalent of pickling and unpickling, but I presume that would error at the pickling stage here?)



-- 
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.

To unsubscribe, e-mail: github-unsubscribe@arrow.apache.org

For queries about this service, please contact Infrastructure at:
users@infra.apache.org