1 /*
2 * Copyright (c) 2020, 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 * @test
26 * @bug 8252506
27 * @summary Verify that arraycopy intrinsics properly handle flat inline type arrays with oop fields.
28 * @library /test/lib
29 * @run main/othervm -XX:CompileCommand=dontinline,compiler.valhalla.inlinetypes.TestArrayCopyWithOops::test*
30 * -XX:CompileCommand=dontinline,compiler.valhalla.inlinetypes.TestArrayCopyWithOops::create*
31 * -Xbatch
32 * compiler.valhalla.inlinetypes.TestArrayCopyWithOops
33 * @run main/othervm -XX:CompileCommand=dontinline,compiler.valhalla.inlinetypes.TestArrayCopyWithOops::test*
34 * -XX:CompileCommand=dontinline,compiler.valhalla.inlinetypes.TestArrayCopyWithOops::create*
35 * -Xbatch -XX:FlatArrayElementMaxSize=0
36 * compiler.valhalla.inlinetypes.TestArrayCopyWithOops
37 */
38
39 package compiler.valhalla.inlinetypes;
40
41 import java.util.Arrays;
42
43 import jdk.test.lib.Asserts;
44
45 public class TestArrayCopyWithOops {
46 static final int LEN = 200;
47
48 static class MyObject {
49 long val = Integer.MAX_VALUE;
50 }
51
52 static primitive class ManyOops {
53 MyObject o1 = new MyObject();
54 MyObject o2 = new MyObject();
55 MyObject o3 = new MyObject();
56 MyObject o4 = new MyObject();
57
58 long hash() {
59 return o1.val + o2.val + o3.val + o4.val;
60 }
61 }
62
63 static ManyOops[] createArrayInline() {
64 ManyOops[] array = new ManyOops[LEN];
65 for (int i = 0; i < LEN; ++i) {
66 array[i] = new ManyOops();
67 }
68 return array;
69 }
70
71 static Object[] createArrayObject() {
72 return createArrayInline();
73 }
74
75 static Object createObject() {
76 return createArrayInline();
77 }
78
79 // System.arraycopy tests
80
81 static void test1(ManyOops[] dst) {
82 System.arraycopy(createArrayInline(), 0, dst, 0, LEN);
83 }
84
85 static void test2(Object[] dst) {
86 System.arraycopy(createArrayObject(), 0, dst, 0, LEN);
87 }
88
89 static void test3(ManyOops[] dst) {
90 System.arraycopy(createArrayObject(), 0, dst, 0, LEN);
91 }
92
93 static void test4(Object[] dst) {
94 System.arraycopy(createArrayInline(), 0, dst, 0, LEN);
95 }
96
97 // System.arraycopy tests (tightly coupled with allocation of dst array)
98
99 static Object[] test5() {
100 ManyOops[] dst = new ManyOops[LEN];
101 System.arraycopy(createArrayInline(), 0, dst, 0, LEN);
102 return dst;
103 }
104
105 static Object[] test6() {
106 Object[] dst = new Object[LEN];
107 System.arraycopy(createArrayObject(), 0, dst, 0, LEN);
108 return dst;
109 }
110
111 static Object[] test7() {
112 ManyOops[] dst = new ManyOops[LEN];
113 System.arraycopy(createArrayObject(), 0, dst, 0, LEN);
114 return dst;
115 }
116
117 static Object[] test8() {
118 Object[] dst = new Object[LEN];
119 System.arraycopy(createArrayInline(), 0, dst, 0, LEN);
120 return dst;
121 }
122
123 // Arrays.copyOf tests
124
125 static Object[] test9() {
126 return Arrays.copyOf(createArrayInline(), LEN, ManyOops[].class);
127 }
128
129 static Object[] test10() {
130 return Arrays.copyOf(createArrayObject(), LEN, Object[].class);
131 }
132
133 static Object[] test11() {
134 return Arrays.copyOf(createArrayInline(), LEN, ManyOops[].class);
135 }
136
137 static Object[] test12() {
138 return Arrays.copyOf(createArrayObject(), LEN, Object[].class);
139 }
140
141 // System.arraycopy test using generic_copy stub
142
143 static void test13(Object dst) {
144 System.arraycopy(createObject(), 0, dst, 0, LEN);
145 }
146
147 static void produceGarbage() {
148 for (int i = 0; i < 100; ++i) {
149 Object[] arrays = new Object[1024];
150 for (int j = 0; j < arrays.length; j++) {
151 arrays[i] = new int[1024];
152 }
153 }
154 System.gc();
155 }
156
157 public static void main(String[] args) {
158 ManyOops[] dst1 = createArrayInline();
159 ManyOops[] dst2 = createArrayInline();
160 ManyOops[] dst3 = createArrayInline();
161 ManyOops[] dst4 = createArrayInline();
162 ManyOops[] dst13 = createArrayInline();
163
164 // Warmup runs to trigger compilation
165 for (int i = 0; i < 50_000; ++i) {
166 test1(dst1);
167 test2(dst2);
168 test3(dst3);
169 test4(dst4);
170 test5();
171 test6();
172 test7();
173 test8();
174 test9();
175 test10();
176 test11();
177 test12();
178 test13(dst13);
179 }
180
181 // Trigger GC to make sure dst arrays are moved to old gen
182 produceGarbage();
183
184 // Move data from flat src to flat dest
185 test1(dst1);
186 test2(dst2);
187 test3(dst3);
188 test4(dst4);
189 Object[] dst5 = test5();
190 Object[] dst6 = test6();
191 Object[] dst7 = test7();
192 Object[] dst8 = test8();
193 Object[] dst9 = test9();
194 Object[] dst10 = test10();
195 Object[] dst11 = test11();
196 Object[] dst12 = test12();
197 test13(dst13);
198
199 // Trigger GC again to make sure that the now dead src arrays are collected.
200 // MyObjects should be kept alive via oop references from the dst array.
201 produceGarbage();
202
203 // Verify content
204 long expected = 4L*Integer.MAX_VALUE;
205 for (int i = 0; i < LEN; ++i) {
206 Asserts.assertEquals(dst1[i].hash(), expected);
207 Asserts.assertEquals(dst2[i].hash(), expected);
208 Asserts.assertEquals(dst3[i].hash(), expected);
209 Asserts.assertEquals(dst4[i].hash(), expected);
210 Asserts.assertEquals(((ManyOops)dst5[i]).hash(), expected);
211 Asserts.assertEquals(((ManyOops)dst7[i]).hash(), expected);
212 Asserts.assertEquals(((ManyOops)dst8[i]).hash(), expected);
213 Asserts.assertEquals(((ManyOops)dst8[i]).hash(), expected);
214 Asserts.assertEquals(((ManyOops)dst9[i]).hash(), expected);
215 Asserts.assertEquals(((ManyOops)dst10[i]).hash(), expected);
216 Asserts.assertEquals(((ManyOops)dst11[i]).hash(), expected);
217 Asserts.assertEquals(((ManyOops)dst12[i]).hash(), expected);
218 Asserts.assertEquals(dst13[i].hash(), expected);
219 }
220 }
221 }