CurtHagenlocher commented on code in PR #35996:
URL: https://github.com/apache/arrow/pull/35996#discussion_r1223333700
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csharp/src/Apache.Arrow/C/CArrowArrayStreamImporter.cs:
##########
@@ -99,24 +93,17 @@ public ValueTask<RecordBatch>
ReadNextRecordBatchAsync(CancellationToken cancell
}
RecordBatch result = null;
- CArrowArray* cArray = CArrowArray.Create();
- try
+ CArrowArray cArray = new CArrowArray();
+ fixed (CArrowArrayStream* cArrayStream = &_cArrayStream)
{
- int errno = _cArrayStream->get_next(_cArrayStream, cArray);
+ int errno = cArrayStream->get_next(cArrayStream, &cArray);
if (errno != 0)
{
throw new Exception($"Unexpected error recieved from
external stream. Errno: {errno}");
}
- if (cArray->release != null)
+ if (cArray.release != null)
{
- result = CArrowArrayImporter.ImportRecordBatch(cArray,
_schema);
- }
- }
- finally
- {
- if (result == null)
- {
- CArrowArray.Free(cArray);
Review Comment:
ImportRecordBatch always took ownership of the array data before. What's
changed is that the memory for cArray is now allocated on the stack instead of
the heap.
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