1 /* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.graphics; 18 19 import android.compat.annotation.UnsupportedAppUsage; 20 21 import com.android.internal.util.ArrayUtils; 22 23 /** 24 * @hide 25 */ 26 @android.ravenwood.annotation.RavenwoodKeepWholeClass 27 public class TemporaryBuffer { 28 @UnsupportedAppUsage obtain(int len)29 public static char[] obtain(int len) { 30 char[] buf; 31 32 synchronized (TemporaryBuffer.class) { 33 buf = sTemp; 34 sTemp = null; 35 } 36 37 if (buf == null || buf.length < len) { 38 buf = ArrayUtils.newUnpaddedCharArray(len); 39 } 40 41 return buf; 42 } 43 44 @UnsupportedAppUsage recycle(char[] temp)45 public static void recycle(char[] temp) { 46 if (temp.length > 1000) return; 47 48 synchronized (TemporaryBuffer.class) { 49 sTemp = temp; 50 } 51 } 52 53 private static char[] sTemp = null; 54 } 55