1 /*
2 * Copyright (c) 2018, 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 package org.graalvm.compiler.hotspot.jdk9.test;
26
27 import static org.junit.Assume.assumeFalse;
28
29 import jdk.vm.ci.code.InstalledCode;
30 import jdk.vm.ci.meta.ResolvedJavaMethod;
31 import org.graalvm.compiler.core.common.CompilationIdentifier;
32 import org.graalvm.compiler.hotspot.replacements.StringUTF16Substitutions;
33 import org.graalvm.compiler.nodes.StructuredGraph;
34 import org.graalvm.compiler.nodes.java.NewArrayNode;
35 import org.graalvm.compiler.replacements.arraycopy.ArrayCopyCallNode;
36 import org.graalvm.compiler.replacements.test.MethodSubstitutionTest;
37 import org.graalvm.compiler.test.AddExports;
38 import org.junit.Before;
39 import org.junit.Test;
40
41 /**
42 * Test substitutions for (innate) methods StringUTF16.toBytes and StringUTF16.getChars provided by
43 * {@link StringUTF16Substitutions}.
44 */
45 @AddExports({"java.base/java.lang"})
46 public final class StringUTF16ToBytesGetCharsTest extends MethodSubstitutionTest {
47
48 private static final int N = 1000;
49 private static final int N_OVERFLOW = 10;
50
51 @Before
52 public void checkAMD64() {
53 assumeFalse(Java8OrEarlier);
54 }
55
56 @Test
57 public void testStringUTF16ToBytes() throws ClassNotFoundException {
58 Class<?> javaclass = Class.forName("java.lang.StringUTF16");
59
60 ResolvedJavaMethod caller = getResolvedJavaMethod(javaclass, "toBytes", char[].class, int.class, int.class);
61 StructuredGraph graph = getReplacements().getIntrinsicGraph(caller, CompilationIdentifier.INVALID_COMPILATION_ID, getDebugContext());
62 assertInGraph(graph, NewArrayNode.class);
63 assertInGraph(graph, ArrayCopyCallNode.class);
64
65 InstalledCode code = getCode(caller, graph);
66
67 for (int srcOffset = 0; srcOffset < 2; srcOffset++) {
68 for (int i = 0; i < N; i++) {
69 int length = i2sz(i);
70 char[] src = fillUTF16Chars(new char[length]);
71 int copiedLength = Math.max(0, length - srcOffset);
72 int srcDelta = Math.min(srcOffset, copiedLength);
73 byte[] dst = (byte[]) invokeSafe(caller, null, src, srcDelta, copiedLength);
74 assert dst.length == copiedLength * 2;
75 byte[] dst2 = (byte[]) executeVarargsSafe(code, src, srcDelta, copiedLength);
76 assertDeepEquals(dst, dst2);
77 }
78 }
79 for (int srcOff = 0; srcOff < N_OVERFLOW; ++srcOff) {
80 for (int len = 0; len < N_OVERFLOW; ++len) {
81 char[] src = fillUTF16Chars(new char[N_OVERFLOW]);
82 test(caller, null, src, srcOff, len);
83 }
84 }
85 }
86
87 @Test
88 public void testStringUTF16getChars() throws ClassNotFoundException {
89 Class<?> javaclass = Class.forName("java.lang.StringUTF16");
90
91 ResolvedJavaMethod caller = getResolvedJavaMethod(javaclass, "getChars", byte[].class, int.class, int.class, char[].class, int.class);
92 StructuredGraph graph = getReplacements().getIntrinsicGraph(caller, CompilationIdentifier.INVALID_COMPILATION_ID, getDebugContext());
93 assertInGraph(graph, ArrayCopyCallNode.class);
94
95 InstalledCode code = getCode(caller, graph);
96
97 for (int dstOffset = 0; dstOffset < 2; dstOffset++) {
98 for (int srcOffset = 0; srcOffset < 2; srcOffset++) {
99 for (int i = 0; i < N; i++) {
100 int length = i2sz(i);
101 byte[] src = fillUTF16Bytes(new byte[length * 2]);
102 char[] dst = new char[length];
103 int copiedLength = Math.max(0, length - Math.max(dstOffset, srcOffset));
104 int dstDelta = Math.min(dstOffset, copiedLength);
105 int srcDelta = Math.min(srcOffset, copiedLength);
106 invokeSafe(caller, null, src, srcDelta, srcDelta + copiedLength, dst, dstDelta);
107 char[] dst2 = new char[length];
108 executeVarargsSafe(code, src, srcDelta, srcDelta + copiedLength, dst2, dstDelta);
109 assertDeepEquals(dst, dst2);
110 }
111 }
112 }
113 for (int srcOff = 0; srcOff < N_OVERFLOW; ++srcOff) {
114 for (int dstOff = 0; dstOff < N_OVERFLOW; ++dstOff) {
115 for (int len = 0; len < N_OVERFLOW; ++len) {
116 byte[] src = fillUTF16Bytes(new byte[N_OVERFLOW]);
117 char[] dst = new char[N_OVERFLOW];
118 test(caller, null, src, srcOff, len, dst, dstOff);
119 }
120 }
121 }
122 }
123
124 private static char[] fillUTF16Chars(char[] v) {
125 for (int ch = 0, i = 0; i < v.length; i++, ch += 0x101) {
126 v[i] = (char) ch;
127 }
128 return v;
129 }
130
131 private static byte[] fillUTF16Bytes(byte[] v) {
132 for (int ch = 1, i = 0; i < v.length; i += 2, ch++) {
133 v[i] = (byte) (ch - 1);
134 v[i + 1] = (byte) ch;
135 }
136 return v;
137 }
138
139 private static int i2sz(int i) {
140 return i * 3;
141 }
142 }