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My first initial commit with all of mine experimental changes.

Dmitry Kabak (userdima committed 13 years ago

Commit d37b88d1 parent 3f5b46618352 files · +2598093 −-8690Browse files

Showing the changes to java/pkg/sun/reflect/UnsafeFieldAccessorImpl.java (1 of 18352 files). Show all

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java/pkg/sun/reflect/UnsafeFieldAccessorImpl.java+203−0
@@ -0,0 +1,203 @@
1+/*
2+ * Copyright (c) 2001, 2005, 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. Oracle designates this
8+ * particular file as subject to the "Classpath" exception as provided
9+ * by Oracle in the LICENSE file that accompanied this code.
10+ *
11+ * This code is distributed in the hope that it will be useful, but WITHOUT
12+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14+ * version 2 for more details (a copy is included in the LICENSE file that
15+ * accompanied this code).
16+ *
17+ * You should have received a copy of the GNU General Public License version
18+ * 2 along with this work; if not, write to the Free Software Foundation,
19+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20+ *
21+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22+ * or visit www.oracle.com if you need additional information or have any
23+ * questions.
24+ */
25+
26+package sun.reflect;
27+
28+import java.lang.reflect.Field;
29+import java.lang.reflect.Modifier;
30+import sun.misc.Unsafe;
31+
32+/** Base class for sun.misc.Unsafe-based FieldAccessors. The
33+ observation is that there are only nine types of fields from the
34+ standpoint of reflection code: the eight primitive types and
35+ Object. Using class Unsafe instead of generated bytecodes saves
36+ memory and loading time for the dynamically-generated
37+ FieldAccessors. */
38+
39+abstract class UnsafeFieldAccessorImpl extends FieldAccessorImpl {
40+ static final Unsafe unsafe = Unsafe.getUnsafe();
41+
42+ protected final Field field;
43+ protected final int fieldOffset;
44+ protected final boolean isFinal;
45+
46+ UnsafeFieldAccessorImpl(Field field) {
47+ this.field = field;
48+ fieldOffset = unsafe.fieldOffset(field);
49+ isFinal = Modifier.isFinal(field.getModifiers());
50+ }
51+
52+ protected void ensureObj(Object o) {
53+ // NOTE: will throw NullPointerException, as specified, if o is null
54+ if (!field.getDeclaringClass().isAssignableFrom(o.getClass())) {
55+ throwSetIllegalArgumentException(o);
56+ }
57+ }
58+
59+ private String getQualifiedFieldName() {
60+ return field.getDeclaringClass().getName() + "." +field.getName();
61+ }
62+
63+ protected IllegalArgumentException newGetIllegalArgumentException(String type) {
64+ return new IllegalArgumentException(
65+ "Attempt to get "+field.getType().getName()+" field \"" +
66+ getQualifiedFieldName() + "\" with illegal data type conversion to "+type
67+ );
68+ }
69+
70+ protected void throwFinalFieldIllegalAccessException(String attemptedType,
71+ String attemptedValue)
72+ throws IllegalAccessException {
73+ throw new IllegalAccessException(getSetMessage(attemptedType, attemptedValue));
74+
75+ }
76+ protected void throwFinalFieldIllegalAccessException(Object o) throws IllegalAccessException {
77+ throwFinalFieldIllegalAccessException(o != null ? o.getClass().getName() : "", "");
78+ }
79+
80+ protected void throwFinalFieldIllegalAccessException(boolean z) throws IllegalAccessException {
81+ throwFinalFieldIllegalAccessException("boolean", Boolean.toString(z));
82+ }
83+
84+ protected void throwFinalFieldIllegalAccessException(char b) throws IllegalAccessException {
85+ throwFinalFieldIllegalAccessException("char", Character.toString(b));
86+ }
87+
88+ protected void throwFinalFieldIllegalAccessException(byte b) throws IllegalAccessException {
89+ throwFinalFieldIllegalAccessException("byte", Byte.toString(b));
90+ }
91+
92+ protected void throwFinalFieldIllegalAccessException(short b) throws IllegalAccessException {
93+ throwFinalFieldIllegalAccessException("short", Short.toString(b));
94+ }
95+
96+ protected void throwFinalFieldIllegalAccessException(int i) throws IllegalAccessException {
97+ throwFinalFieldIllegalAccessException("int", Integer.toString(i));
98+ }
99+
100+ protected void throwFinalFieldIllegalAccessException(long i) throws IllegalAccessException {
101+ throwFinalFieldIllegalAccessException("long", Long.toString(i));
102+ }
103+
104+ protected void throwFinalFieldIllegalAccessException(float f) throws IllegalAccessException {
105+ throwFinalFieldIllegalAccessException("float", Float.toString(f));
106+ }
107+
108+ protected void throwFinalFieldIllegalAccessException(double f) throws IllegalAccessException {
109+ throwFinalFieldIllegalAccessException("double", Double.toString(f));
110+ }
111+
112+ protected IllegalArgumentException newGetBooleanIllegalArgumentException() {
113+ return newGetIllegalArgumentException("boolean");
114+ }
115+
116+ protected IllegalArgumentException newGetByteIllegalArgumentException() {
117+ return newGetIllegalArgumentException("byte");
118+ }
119+
120+ protected IllegalArgumentException newGetCharIllegalArgumentException() {
121+ return newGetIllegalArgumentException("char");
122+ }
123+
124+ protected IllegalArgumentException newGetShortIllegalArgumentException() {
125+ return newGetIllegalArgumentException("short");
126+ }
127+
128+ protected IllegalArgumentException newGetIntIllegalArgumentException() {
129+ return newGetIllegalArgumentException("int");
130+ }
131+
132+ protected IllegalArgumentException newGetLongIllegalArgumentException() {
133+ return newGetIllegalArgumentException("long");
134+ }
135+
136+ protected IllegalArgumentException newGetFloatIllegalArgumentException() {
137+ return newGetIllegalArgumentException("float");
138+ }
139+
140+ protected IllegalArgumentException newGetDoubleIllegalArgumentException() {
141+ return newGetIllegalArgumentException("double");
142+ }
143+
144+ protected String getSetMessage(String attemptedType, String attemptedValue) {
145+ String err = "Can not set";
146+ if (Modifier.isStatic(field.getModifiers()))
147+ err += " static";
148+ if (isFinal)
149+ err += " final";
150+ err += " " + field.getType().getName() + " field " + getQualifiedFieldName() + " to ";
151+ if (attemptedValue.length() > 0) {
152+ err += "(" + attemptedType + ")" + attemptedValue;
153+ } else {
154+ if (attemptedType.length() > 0)
155+ err += attemptedType;
156+ else
157+ err += "null value";
158+ }
159+ return err;
160+ }
161+
162+ protected void throwSetIllegalArgumentException(String attemptedType,
163+ String attemptedValue) {
164+ throw new IllegalArgumentException(getSetMessage(attemptedType,attemptedValue));
165+ }
166+
167+ protected void throwSetIllegalArgumentException(Object o) {
168+ throwSetIllegalArgumentException(o != null ? o.getClass().getName() : "", "");
169+ }
170+
171+ protected void throwSetIllegalArgumentException(boolean b) {
172+ throwSetIllegalArgumentException("boolean", Boolean.toString(b));
173+ }
174+
175+ protected void throwSetIllegalArgumentException(byte b) {
176+ throwSetIllegalArgumentException("byte", Byte.toString(b));
177+ }
178+
179+ protected void throwSetIllegalArgumentException(char c) {
180+ throwSetIllegalArgumentException("char", Character.toString(c));
181+ }
182+
183+ protected void throwSetIllegalArgumentException(short s) {
184+ throwSetIllegalArgumentException("short", Short.toString(s));
185+ }
186+
187+ protected void throwSetIllegalArgumentException(int i) {
188+ throwSetIllegalArgumentException("int", Integer.toString(i));
189+ }
190+
191+ protected void throwSetIllegalArgumentException(long l) {
192+ throwSetIllegalArgumentException("long", Long.toString(l));
193+ }
194+
195+ protected void throwSetIllegalArgumentException(float f) {
196+ throwSetIllegalArgumentException("float", Float.toString(f));
197+ }
198+
199+ protected void throwSetIllegalArgumentException(double d) {
200+ throwSetIllegalArgumentException("double", Double.toString(d));
201+ }
202+
203+}