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comparison agent/src/share/classes/sun/jvm/hotspot/utilities/ConstantTag.java @ 6725:da91efe96a93

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6964458: Reimplement class meta-data storage to use native memory Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
author coleenp
date Sat, 01 Sep 2012 13:25:18 -0400
parents 6a991dcb52bb
children f16e75e0cf11
comparison
equal deleted inserted replaced
6724:36d1d483d5d6 6725:da91efe96a93
1 /* 1 /*
2 * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 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 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
45 // static final int JVM_CONSTANT_(unused) = 17; // JSR 292 early drafts only 45 // static final int JVM_CONSTANT_(unused) = 17; // JSR 292 early drafts only
46 private static final int JVM_CONSTANT_InvokeDynamic = 18; // JSR 292 46 private static final int JVM_CONSTANT_InvokeDynamic = 18; // JSR 292
47 private static final int JVM_CONSTANT_Invalid = 0; // For bad value initialization 47 private static final int JVM_CONSTANT_Invalid = 0; // For bad value initialization
48 private static final int JVM_CONSTANT_UnresolvedClass = 100; // Temporary tag until actual use 48 private static final int JVM_CONSTANT_UnresolvedClass = 100; // Temporary tag until actual use
49 private static final int JVM_CONSTANT_ClassIndex = 101; // Temporary tag while constructing constant pool 49 private static final int JVM_CONSTANT_ClassIndex = 101; // Temporary tag while constructing constant pool
50 private static final int JVM_CONSTANT_UnresolvedString = 102; // Temporary tag until actual use 50 private static final int JVM_CONSTANT_StringIndex = 102; // Temporary tag while constructing constant pool
51 private static final int JVM_CONSTANT_StringIndex = 103; // Temporary tag while constructing constant pool 51 private static final int JVM_CONSTANT_UnresolvedClassInError = 103; // Resolution failed
52 private static final int JVM_CONSTANT_UnresolvedClassInError = 104; // Resolution failed 52 private static final int JVM_CONSTANT_MethodHandleInError = 104; // Error tag due to resolution error
53 private static final int JVM_CONSTANT_Object = 105; // Required for BoundMethodHandle arguments. 53 private static final int JVM_CONSTANT_MethodTypeInError = 105; // Error tag due to resolution error
54 private static final int JVM_CONSTANT_Object = 106; // Required for BoundMethodHandle arguments.
54 55
55 // JVM_CONSTANT_MethodHandle subtypes //FIXME: connect these to data structure 56 // JVM_CONSTANT_MethodHandle subtypes //FIXME: connect these to data structure
56 private static int JVM_REF_getField = 1; 57 private static int JVM_REF_getField = 1;
57 private static int JVM_REF_getStatic = 2; 58 private static int JVM_REF_getStatic = 2;
58 private static int JVM_REF_putField = 3; 59 private static int JVM_REF_putField = 3;
91 public boolean isUnresolvedKlass() { 92 public boolean isUnresolvedKlass() {
92 return tag == JVM_CONSTANT_UnresolvedClass || tag == JVM_CONSTANT_UnresolvedClassInError; 93 return tag == JVM_CONSTANT_UnresolvedClass || tag == JVM_CONSTANT_UnresolvedClassInError;
93 } 94 }
94 public boolean isUnresolveKlassInError() { return tag == JVM_CONSTANT_UnresolvedClassInError; } 95 public boolean isUnresolveKlassInError() { return tag == JVM_CONSTANT_UnresolvedClassInError; }
95 public boolean isKlassIndex() { return tag == JVM_CONSTANT_ClassIndex; } 96 public boolean isKlassIndex() { return tag == JVM_CONSTANT_ClassIndex; }
96 public boolean isUnresolvedString() { return tag == JVM_CONSTANT_UnresolvedString; }
97 public boolean isStringIndex() { return tag == JVM_CONSTANT_StringIndex; } 97 public boolean isStringIndex() { return tag == JVM_CONSTANT_StringIndex; }
98 98
99 public boolean isObject() { return tag == JVM_CONSTANT_Object; } 99 public boolean isObject() { return tag == JVM_CONSTANT_Object; }
100 100
101 public boolean isKlassReference() { return isKlassIndex() || isUnresolvedKlass(); } 101 public boolean isKlassReference() { return isKlassIndex() || isUnresolvedKlass(); }
115 115
116 case JVM_CONSTANT_Class : 116 case JVM_CONSTANT_Class :
117 case JVM_CONSTANT_String : 117 case JVM_CONSTANT_String :
118 case JVM_CONSTANT_UnresolvedClass : 118 case JVM_CONSTANT_UnresolvedClass :
119 case JVM_CONSTANT_UnresolvedClassInError : 119 case JVM_CONSTANT_UnresolvedClassInError :
120 case JVM_CONSTANT_MethodHandleInError :
121 case JVM_CONSTANT_MethodTypeInError :
120 case JVM_CONSTANT_ClassIndex : 122 case JVM_CONSTANT_ClassIndex :
121 case JVM_CONSTANT_UnresolvedString :
122 case JVM_CONSTANT_StringIndex : 123 case JVM_CONSTANT_StringIndex :
123 case JVM_CONSTANT_MethodHandle : 124 case JVM_CONSTANT_MethodHandle :
124 case JVM_CONSTANT_MethodType : 125 case JVM_CONSTANT_MethodType :
125 case JVM_CONSTANT_Object : 126 case JVM_CONSTANT_Object :
126 return BasicType.T_OBJECT; 127 return BasicType.T_OBJECT;
127 default: 128 default:
128 throw new InternalError("unexpected tag: " + tag); 129 throw new InternalError("unexpected tag: " + tag);
129 } 130 }
130 } 131 }
132
133 public String toString() {
134 return "ConstantTag:" + Integer.toString(tag);
131 } 135 }
136 }