org.apache.flink.runtime.memory.ListMemorySegmentSource Maven / Gradle / Ivy
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* 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,
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*/
package org.apache.flink.runtime.memory;
import org.apache.flink.core.memory.MemorySegment;
import org.apache.flink.core.memory.MemorySegmentSource;
import java.util.List;
/** Simple memory segment source that draws segments from a list. */
public class ListMemorySegmentSource implements MemorySegmentSource {
private final List segments;
public ListMemorySegmentSource(final List memorySegments) {
this.segments = memorySegments;
}
@Override
public MemorySegment nextSegment() {
if (this.segments.size() > 0) {
return this.segments.remove(this.segments.size() - 1);
} else {
return null;
}
}
}