CurtHagenlocher commented on code in PR #37904: URL: https://github.com/apache/arrow/pull/37904#discussion_r1338838104
########## csharp/test/Apache.Arrow.IntegrationTest/CDataInterface.cs: ########## @@ -0,0 +1,79 @@ +// Licensed to the Apache Software Foundation (ASF) under one or more +// contributor license agreements. See the NOTICE file distributed with +// this work for additional information regarding copyright ownership. +// The ASF licenses this file to You under the Apache License, Version 2.0 +// (the "License"); you may not use this file except in compliance with +// the License. You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +using System; +using System.Collections.Generic; +using System.Data; +using System.Diagnostics; +using System.IO; +using Apache.Arrow.C; +using Apache.Arrow.Arrays; +using Apache.Arrow.Types; + +namespace Apache.Arrow.IntegrationTest +{ + /// <summary> + /// Bridge for C Data Interface integration testing. + /// These methods are called from the Python integration testing + /// harness provided by Archery. + /// </summary> + public static class CDataInterface + { + // Archery uses the `pythonnet` library (*) to invoke .Net DLLs. + // `pythonnet` is only able to marshal simple types such as int and + // str, which is why we provide trivial wrappers around other APIs. + // + // (*) https://pythonnet.github.io/ + + public static void Initialize() + { + // Allow debugging using Debug.WriteLine() + Trace.Listeners.Add(new ConsoleTraceListener()); + } + + public static unsafe Schema ImportSchema(long ptr) + { + return CArrowSchemaImporter.ImportSchema((CArrowSchema*) ptr); + } + + public static unsafe void ExportSchema(Schema schema, long ptr) + { + CArrowSchemaExporter.ExportSchema(schema, (CArrowSchema*) ptr); + } + + public static unsafe RecordBatch ImportRecordBatch(long ptr, Schema schema) + { + return CArrowArrayImporter.ImportRecordBatch((CArrowArray*) ptr, schema); + } + + public static unsafe void ExportRecordBatch(RecordBatch batch, long ptr) + { + CArrowArrayExporter.ExportRecordBatch(batch, (CArrowArray*) ptr); + } + + public static JsonFile ParseJsonFile(String jsonPath) + { + return JsonFile.Parse(new FileInfo(jsonPath)); + } + + public static long GetAllocatedBytes() + { + GC.Collect(); + // XXX this doesn't seem to give stable and reliable measurements + var gcInfo = GC.GetGCMemoryInfo(); + return gcInfo.PromotedBytes; Review Comment: I also don't know what kind of effect pythonnet would have on this. There may be Python objects waiting for a Python GC that are keeping .NET objects alive. -- 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: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
