1 /*
2 * Copyright (c) 2000, 2024, 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 *
92 }
93 }
94
95 public boolean isA(Klass k) {
96 return getKlass().isSubtypeOf(k);
97 }
98
99 // Returns the byte size of this object
100 public long getObjectSize() {
101 Klass k = getKlass();
102 // All other types should be overriding getObjectSize directly
103 return ((InstanceKlass)k).getObjectSize(this);
104 }
105
106 // Type test operations
107 public boolean isInstance() { return false; }
108 public boolean isInstanceRef() { return false; }
109 public boolean isArray() { return false; }
110 public boolean isObjArray() { return false; }
111 public boolean isTypeArray() { return false; }
112 public boolean isThread() { return false; }
113
114 // Align the object size.
115 public static long alignObjectSize(long size) {
116 return VM.getVM().alignUp(size, VM.getVM().getMinObjAlignmentInBytes());
117 }
118
119 // All vm's align longs, so pad out certain offsets.
120 public static long alignObjectOffset(long offset) {
121 return VM.getVM().alignUp(offset, VM.getVM().getBytesPerLong());
122 }
123
124 public boolean equals(Object obj) {
125 if (obj instanceof Oop other) {
126 return getHandle().equals(other.getHandle());
127 }
128 return false;
129 }
130
131 public int hashCode() { return getHandle().hashCode(); }
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1 /*
2 * Copyright (c) 2000, 2026, 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 *
92 }
93 }
94
95 public boolean isA(Klass k) {
96 return getKlass().isSubtypeOf(k);
97 }
98
99 // Returns the byte size of this object
100 public long getObjectSize() {
101 Klass k = getKlass();
102 // All other types should be overriding getObjectSize directly
103 return ((InstanceKlass)k).getObjectSize(this);
104 }
105
106 // Type test operations
107 public boolean isInstance() { return false; }
108 public boolean isInstanceRef() { return false; }
109 public boolean isArray() { return false; }
110 public boolean isObjArray() { return false; }
111 public boolean isTypeArray() { return false; }
112 public boolean isFlatArray() { return false; }
113 public boolean isThread() { return false; }
114
115 // Align the object size.
116 public static long alignObjectSize(long size) {
117 return VM.getVM().alignUp(size, VM.getVM().getMinObjAlignmentInBytes());
118 }
119
120 // All vm's align longs, so pad out certain offsets.
121 public static long alignObjectOffset(long offset) {
122 return VM.getVM().alignUp(offset, VM.getVM().getBytesPerLong());
123 }
124
125 public boolean equals(Object obj) {
126 if (obj instanceof Oop other) {
127 return getHandle().equals(other.getHandle());
128 }
129 return false;
130 }
131
132 public int hashCode() { return getHandle().hashCode(); }
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