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