--- /dev/null
+/*
+ * 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.arrow.memory.util;
+
+import java.util.Arrays;
+
+/**
+ * Utilities and static methods needed for arrow-memory.
+ */
+public final class CommonUtil {
+
+ private CommonUtil() { }
+
+ /**
+ * Rounds up the provided value to the nearest power of two.
+ *
+ * @param val An integer value.
+ * @return The closest power of two of that value.
+ */
+ public static int nextPowerOfTwo(int val) {
+ if (val == 0 || val == 1) {
+ return val + 1;
+ }
+ int highestBit = Integer.highestOneBit(val);
+ if (highestBit == val) {
+ return val;
+ } else {
+ return highestBit << 1;
+ }
+ }
+
+ /**
+ * Rounds up the provided value to the nearest power of two.
+ *
+ * @param val A long value.
+ * @return The closest power of two of that value.
+ */
+ public static long nextPowerOfTwo(long val) {
+ if (val == 0 || val == 1) {
+ return val + 1;
+ }
+ long highestBit = Long.highestOneBit(val);
+ if (highestBit == val) {
+ return val;
+ } else {
+ return highestBit << 1;
+ }
+ }
+
+ /**
+ * Specify an indentation amount when using a StringBuilder.
+ *
+ * @param sb StringBuilder to use
+ * @param indent Indentation amount
+ * @return the StringBuilder object with indentation applied
+ */
+ public static StringBuilder indent(StringBuilder sb, int indent) {
+ final char[] indentation = new char[indent * 2];
+ Arrays.fill(indentation, ' ');
+ sb.append(indentation);
+ return sb;
+ }
+}
+