1 /*
2 * Copyright (c) 2020, Red Hat, Inc. 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 * @test
26 * @summary Test for Runtime.fieldSizeOf with 32-bit compressed oops
27 * @library /test/lib
28 *
29 * @build sun.hotspot.WhiteBox
30 * @run driver ClassFileInstaller sun.hotspot.WhiteBox
31 *
32 * @run main/othervm -Xmx128m
33 * -XX:+UnlockDiagnosticVMOptions -XX:+AbortVMOnCompilationFailure -Xcheck:jni -XX:+WhiteBoxAPI -Xbootclasspath/a:.
34 * -Xint
35 * FieldSizeOf
36 *
37 * @run main/othervm -Xmx128m
38 * -XX:+UnlockDiagnosticVMOptions -XX:+AbortVMOnCompilationFailure -Xcheck:jni -XX:+WhiteBoxAPI -Xbootclasspath/a:.
39 * -XX:TieredStopAtLevel=1
40 * FieldSizeOf
41 *
42 * @run main/othervm -Xmx128m
43 * -XX:+UnlockDiagnosticVMOptions -XX:+AbortVMOnCompilationFailure -Xcheck:jni -XX:+WhiteBoxAPI -Xbootclasspath/a:.
44 * -XX:-TieredCompilation
45 * FieldSizeOf
46 */
47
48 /*
49 * @test
50 * @summary Test for Runtime.fieldSizeOf with zero-based compressed oops
51 * @library /test/lib
52 * @requires vm.bits == 64
53 *
54 * @build sun.hotspot.WhiteBox
55 * @run driver ClassFileInstaller sun.hotspot.WhiteBox
56 *
57 * @run main/othervm -Xmx4g
58 * -XX:+UnlockDiagnosticVMOptions -XX:+AbortVMOnCompilationFailure -Xcheck:jni -XX:+WhiteBoxAPI -Xbootclasspath/a:.
59 * -Xint
60 * FieldSizeOf
61 *
62 * @run main/othervm -Xmx4g
63 * -XX:+UnlockDiagnosticVMOptions -XX:+AbortVMOnCompilationFailure -Xcheck:jni -XX:+WhiteBoxAPI -Xbootclasspath/a:.
64 * -XX:TieredStopAtLevel=1
65 * FieldSizeOf
66 *
67 * @run main/othervm -Xmx4g
68 * -XX:+UnlockDiagnosticVMOptions -XX:+AbortVMOnCompilationFailure -Xcheck:jni -XX:+WhiteBoxAPI -Xbootclasspath/a:.
69 * -XX:-TieredCompilation
70 * FieldSizeOf
71 */
72
73 /*
74 * @test
75 * @summary Test for Runtime.fieldSizeOf without compressed oops
76 * @library /test/lib
77 * @requires vm.bits == 64
78 *
79 * @build sun.hotspot.WhiteBox
80 * @run driver ClassFileInstaller sun.hotspot.WhiteBox
81 *
82 * @run main/othervm -Xmx128m -XX:-UseCompressedOops
83 * -XX:+UnlockDiagnosticVMOptions -XX:+AbortVMOnCompilationFailure -Xcheck:jni -XX:+WhiteBoxAPI -Xbootclasspath/a:.
84 * -Xint
85 * FieldSizeOf
86 *
87 * @run main/othervm -Xmx128m -XX:-UseCompressedOops
88 * -XX:+UnlockDiagnosticVMOptions -XX:+AbortVMOnCompilationFailure -Xcheck:jni -XX:+WhiteBoxAPI -Xbootclasspath/a:.
89 * -XX:TieredStopAtLevel=1
90 * FieldSizeOf
91 *
92 * @run main/othervm -Xmx128m -XX:-UseCompressedOops
93 * -XX:+UnlockDiagnosticVMOptions -XX:+AbortVMOnCompilationFailure -Xcheck:jni -XX:+WhiteBoxAPI -Xbootclasspath/a:.
94 * -XX:-TieredCompilation
95 * FieldSizeOf
96 */
97
98 import java.lang.reflect.Field;
99 import sun.hotspot.WhiteBox;
100
101 public class FieldSizeOf {
102
103 static final Boolean compressedOops = WhiteBox.getWhiteBox().getBooleanVMFlag("UseCompressedOops");
104 static final int R = ((compressedOops == null) || (compressedOops == true)) ? 4 : 8;
105
106 public static void main(String ... args) throws Exception {
107 testInstanceOffsets();
108 testStaticOffsets();
109 testNulls();
110 }
111
112 private static void testInstanceOffsets() throws Exception {
113 testWith(1, Holder.class.getDeclaredField("f_boolean"));
114 testWith(1, Holder.class.getDeclaredField("f_byte"));
115 testWith(2, Holder.class.getDeclaredField("f_char"));
116 testWith(2, Holder.class.getDeclaredField("f_short"));
117 testWith(4, Holder.class.getDeclaredField("f_int"));
118 testWith(4, Holder.class.getDeclaredField("f_float"));
119 testWith(8, Holder.class.getDeclaredField("f_long"));
120 testWith(8, Holder.class.getDeclaredField("f_double"));
121 testWith(R, Holder.class.getDeclaredField("f_object"));
122 testWith(R, Holder.class.getDeclaredField("f_array"));
123 }
124
125 private static void testStaticOffsets() throws Exception {
126 testWith(1, Holder.class.getDeclaredField("s_boolean"));
127 testWith(1, Holder.class.getDeclaredField("s_byte"));
128 testWith(2, Holder.class.getDeclaredField("s_char"));
129 testWith(2, Holder.class.getDeclaredField("s_short"));
130 testWith(4, Holder.class.getDeclaredField("s_int"));
131 testWith(4, Holder.class.getDeclaredField("s_float"));
132 testWith(8, Holder.class.getDeclaredField("s_long"));
133 testWith(8, Holder.class.getDeclaredField("s_double"));
134 testWith(R, Holder.class.getDeclaredField("s_object"));
135 testWith(R, Holder.class.getDeclaredField("s_array"));
136 }
137
138 private static void testWith(int expected, Field f) {
139 for (int c = 0; c < RuntimeOfUtil.ITERS; c++) {
140 RuntimeOfUtil.assertEquals(expected, Runtime.fieldSizeOf(f));
141 }
142 }
143
144 private static void testNulls() {
145 for (int c = 0; c < RuntimeOfUtil.ITERS; c++) {
146 try {
147 Runtime.fieldSizeOf(null);
148 RuntimeOfUtil.assertFail();
149 } catch (NullPointerException e) {
150 // expected
151 }
152 }
153 }
154
155 public static class Holder {
156 static boolean s_boolean;
157 static byte s_byte;
158 static char s_char;
159 static short s_short;
160 static int s_int;
161 static float s_float;
162 static double s_double;
163 static long s_long;
164 static Object s_object;
165 static Object[] s_array;
166 boolean f_boolean;
167 byte f_byte;
168 char f_char;
169 short f_short;
170 int f_int;
171 float f_float;
172 double f_double;
173 long f_long;
174 Object f_object;
175 Object[] f_array;
176 }
177
178 }