viirya commented on code in PR #83: URL: https://github.com/apache/arrow-datafusion-comet/pull/83#discussion_r1511526010
########## spark/src/main/java/org/apache/spark/CometTaskMemoryManager.java: ########## @@ -0,0 +1,77 @@ +/* + * 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. + */ + +package org.apache.spark; + +import java.io.IOException; + +import org.apache.spark.memory.MemoryConsumer; +import org.apache.spark.memory.MemoryMode; +import org.apache.spark.memory.TaskMemoryManager; + +/** + * A adapter class that is used by Comet native to acquire & release memory through Spark's unified + * memory manager. This assumes Spark's off-heap memory mode is enabled. + */ +public class CometTaskMemoryManager { + /** The id uniquely identifies the native plan this memory manager is associated to */ + private final long id; + + private final TaskMemoryManager internal; + private final NativeMemoryConsumer nativeMemoryConsumer; + + public CometTaskMemoryManager(long id) { + this.id = id; + this.internal = TaskContext$.MODULE$.get().taskMemoryManager(); + this.nativeMemoryConsumer = new NativeMemoryConsumer(); + } + + // Called by Comet native through JNI. + // Returns the actual amount of memory (in bytes) granted. + public long acquireMemory(long size) { + return internal.acquireExecutionMemory(size, nativeMemoryConsumer); + } Review Comment: Oh okay, then it is fine. -- 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-unsubscr...@arrow.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
