1 /* 2 * Copyright (c) 2001, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 package sun.jvm.hotspot.runtime; 26 27 /** Encapsulates the BasicTypeSize enum in globalDefinitions.hpp in 28 the VM. */ 29 30 public class BasicTypeSize { 31 private static boolean initialized = false; 32 private static int tBooleanSize = 1; 33 private static int tCharSize = 1; 34 private static int tFloatSize = 1; 35 private static int tDoubleSize = 2; 36 private static int tByteSize = 1; 37 private static int tShortSize = 1; 38 private static int tIntSize = 1; 39 private static int tLongSize = 2; 40 private static int tObjectSize = 1; 41 private static int tArraySize = 1; 42 private static int tVoidSize = 0; 43 44 public static int getTBooleanSize() { 45 return tBooleanSize; 46 } 47 48 public static int getTCharSize() { 49 return tCharSize; 50 } 51 52 public static int getTFloatSize() { 53 return tFloatSize; 54 } 55 56 public static int getTDoubleSize() { 57 return tDoubleSize; 58 } 59 60 public static int getTByteSize() { 61 return tByteSize; 62 } 63 64 public static int getTShortSize() { 65 return tShortSize; 66 } 67 68 public static int getTIntSize() { 69 return tIntSize; 70 } 71 72 public static int getTLongSize() { 73 return tLongSize; 74 } 75 76 public static int getTObjectSize() { 77 return tObjectSize; 78 } 79 80 public static int getTArraySize() { 81 return tArraySize; 82 } 83 84 public static int getTVoidSize() { 85 return tVoidSize; 86 } 87 } | 1 /* 2 * Copyright (c) 2001, 2017, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 package sun.jvm.hotspot.runtime; 26 27 import java.util.Observer; 28 import sun.jvm.hotspot.types.TypeDataBase; 29 30 31 /** Encapsulates the BasicTypeSize enum in globalDefinitions.hpp in 32 the VM. */ 33 34 public class BasicTypeSize { 35 private static int tBooleanSize; 36 private static int tCharSize; 37 private static int tFloatSize; 38 private static int tDoubleSize; 39 private static int tByteSize; 40 private static int tShortSize; 41 private static int tIntSize; 42 private static int tLongSize; 43 private static int tObjectSize; 44 private static int tArraySize; 45 private static int tNarrowOopSize; 46 private static int tNarrowKlassSize; 47 private static int tVoidSize; 48 49 static { 50 VM.registerVMInitializedObserver( 51 (o, d) -> initialize(VM.getVM().getTypeDataBase())); 52 } 53 54 private static synchronized void initialize(TypeDataBase db) { 55 tBooleanSize = db.lookupIntConstant("T_BOOLEAN_size").intValue(); 56 tCharSize = db.lookupIntConstant("T_INT_size").intValue(); 57 tFloatSize = db.lookupIntConstant("T_FLOAT_size").intValue(); 58 tDoubleSize = db.lookupIntConstant("T_DOUBLE_size").intValue(); 59 tByteSize = db.lookupIntConstant("T_BYTE_size").intValue(); 60 tShortSize = db.lookupIntConstant("T_SHORT_size").intValue(); 61 tIntSize = db.lookupIntConstant("T_INT_size").intValue(); 62 tLongSize = db.lookupIntConstant("T_LONG_size").intValue(); 63 tObjectSize = db.lookupIntConstant("T_OBJECT_size").intValue(); 64 tArraySize = db.lookupIntConstant("T_ARRAY_size").intValue(); 65 tNarrowOopSize = db.lookupIntConstant("T_NARROWOOP_size").intValue(); 66 tNarrowKlassSize = db.lookupIntConstant("T_NARROWKLASS_size").intValue(); 67 tVoidSize = db.lookupIntConstant("T_VOID_size").intValue(); 68 } 69 70 public static int getTBooleanSize() { 71 return tBooleanSize; 72 } 73 74 public static int getTCharSize() { 75 return tCharSize; 76 } 77 78 public static int getTFloatSize() { 79 return tFloatSize; 80 } 81 82 public static int getTDoubleSize() { 83 return tDoubleSize; 84 } 85 86 public static int getTByteSize() { 87 return tByteSize; 88 } 89 90 public static int getTShortSize() { 91 return tShortSize; 92 } 93 94 public static int getTIntSize() { 95 return tIntSize; 96 } 97 98 public static int getTLongSize() { 99 return tLongSize; 100 } 101 102 public static int getTObjectSize() { 103 return tObjectSize; 104 } 105 106 public static int getTArraySize() { 107 return tArraySize; 108 } 109 110 public static int getTNarrowOopSize() { 111 return tNarrowOopSize; 112 } 113 114 public static int getTNarrowKlassSize() { 115 return tNarrowKlassSize; 116 } 117 118 public static int getTVoidSize() { 119 return tVoidSize; 120 } 121 } |