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src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/runtime/BasicTypeSize.java

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   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 }
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