1c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta/* 2c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta * Copyright (C) 2014 The Android Open Source Project 3c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta * 4c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta * Licensed under the Apache License, Version 2.0 (the "License"); 5c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta * you may not use this file except in compliance with the License. 6c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta * You may obtain a copy of the License at 7c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta * 8c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta * http://www.apache.org/licenses/LICENSE-2.0 9c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta * 10c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta * Unless required by applicable law or agreed to in writing, software 11c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta * distributed under the License is distributed on an "AS IS" BASIS, 12c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta * See the License for the specific language governing permissions and 14c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta * limitations under the License. 15c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta */ 16c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta 17c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Guptapackage dalvik.system; 18c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta 19c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Guptaimport com.android.tools.layoutlib.annotations.LayoutlibDelegate; 20c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta 21c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta/** 22c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta * Delegate used to provide implementation of a select few native methods of {@link VMRuntime} 23c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta * <p/> 24c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta * Through the layoutlib_create tool, the original native methods of VMRuntime have been replaced 25c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta * by calls to methods of the same name in this delegate class. 26c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta */ 27c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Guptapublic class VMRuntime_Delegate { 28c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta 29c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta // Copied from libcore/libdvm/src/main/java/dalvik/system/VMRuntime 30c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta @LayoutlibDelegate 31c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta /*package*/ static Object newUnpaddedArray(VMRuntime runtime, Class<?> componentType, 32c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta int minLength) { 33c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta // Dalvik has 32bit pointers, the array header is 16bytes plus 4bytes for dlmalloc, 34c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta // allocations are 8byte aligned so having 4bytes of array data avoids padding. 35c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta if (!componentType.isPrimitive()) { 36c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta int size = ((minLength & 1) == 0) ? minLength + 1 : minLength; 37c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta return java.lang.reflect.Array.newInstance(componentType, size); 38c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta } else if (componentType == char.class) { 39c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta int bytes = 20 + (2 * minLength); 40c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta int alignedUpBytes = (bytes + 7) & -8; 41c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta int dataBytes = alignedUpBytes - 20; 42c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta int size = dataBytes / 2; 43c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta return new char[size]; 44c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta } else if (componentType == int.class) { 45c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta int size = ((minLength & 1) == 0) ? minLength + 1 : minLength; 46c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta return new int[size]; 47c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta } else if (componentType == byte.class) { 48c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta int bytes = 20 + minLength; 49c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta int alignedUpBytes = (bytes + 7) & -8; 50c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta int dataBytes = alignedUpBytes - 20; 51c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta int size = dataBytes; 52c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta return new byte[size]; 53c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta } else if (componentType == boolean.class) { 54c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta int bytes = 20 + minLength; 55c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta int alignedUpBytes = (bytes + 7) & -8; 56c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta int dataBytes = alignedUpBytes - 20; 57c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta int size = dataBytes; 58c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta return new boolean[size]; 59c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta } else if (componentType == short.class) { 60c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta int bytes = 20 + (2 * minLength); 61c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta int alignedUpBytes = (bytes + 7) & -8; 62c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta int dataBytes = alignedUpBytes - 20; 63c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta int size = dataBytes / 2; 64c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta return new short[size]; 65c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta } else if (componentType == float.class) { 66c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta int size = ((minLength & 1) == 0) ? minLength + 1 : minLength; 67c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta return new float[size]; 68c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta } else if (componentType == long.class) { 69c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta return new long[minLength]; 70c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta } else if (componentType == double.class) { 71c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta return new double[minLength]; 72c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta } else { 73c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta assert componentType == void.class; 74c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta throw new IllegalArgumentException("Can't allocate an array of void"); 75c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta } 76c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta } 77c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta 78c501846c167bcf24abfda522a850f31ed75b983fDeepanshu Gupta} 79