1 /*
2 * Copyright (c) 2015, 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 8138651
27 * @library /testlibrary /../../test/lib
28 * @build IntrinsicDisabledTest
29 * @run main ClassFileInstaller sun.hotspot.WhiteBox
30 * sun.hotspot.WhiteBox$WhiteBoxPermission
31 * @run main/othervm -Xbootclasspath/a:.
32 * -XX:+UnlockDiagnosticVMOptions
33 * -XX:+WhiteBoxAPI
34 * -XX:DisableIntrinsic=_putCharVolatile,_putInt
35 * -XX:DisableIntrinsic=_putIntVolatile
36 * -XX:CompileCommand=option,sun.misc.Unsafe::putChar,ccstrlist,DisableIntrinsic,_getCharVolatile,_getInt
37 * -XX:CompileCommand=option,sun.misc.Unsafe::putCharVolatile,ccstrlist,DisableIntrinsic,_getIntVolatile
38 * IntrinsicDisabledTest
39 */
40
41 import java.lang.reflect.Executable;
42 import java.util.Objects;
43
44 import sun.hotspot.WhiteBox;
45
46 public class IntrinsicDisabledTest {
47
48 private static final WhiteBox wb = WhiteBox.getWhiteBox();
49
50 /* Compilation level corresponding to C1. */
51 private static final int COMP_LEVEL_SIMPLE = 1;
52
53 /* Compilation level corresponding to C2. */
54 private static final int COMP_LEVEL_FULL_OPTIMIZATION = 4;
55
56 /* Determine if the VM the test is running on is a server or a
57 * client VM. */
58 private static boolean isServerVM() {
59 return System.getProperty("java.vm.name").toLowerCase().contains("server");
60 }
61
62 /* Determine if tiered compilation is enabled. */
63 private static boolean isTieredCompilationEnabled() {
64 return Boolean.valueOf(Objects.toString(wb.getVMFlag("TieredCompilation")));
65 }
66
67 /* This test uses several methods from sun.misc.Unsafe. The method
68 * getMethod() returns a different Executable for each different
69 * combination of its input parameters. There are eight possible
70 * combinations, getMethod can return an Executable representing
71 * the following methods: putChar, putCharVolatile, getChar,
72 * getCharVolatile, putInt, putIntVolatile, getInt,
73 * getIntVolatile. These methods were selected because they can
74 * be intrinsified by both the C1 and the C2 compiler.
75 */
76 static Executable getMethod(boolean isChar, boolean isPut, boolean isVolatile) throws RuntimeException {
77 Executable aMethod;
78 String methodTypeName = isChar ? "Char" : "Int";
79
80 try {
81 Class aClass = Class.forName("sun.misc.Unsafe");
82 if (isPut) {
83 aMethod = aClass.getDeclaredMethod("put" + methodTypeName + (isVolatile ? "Volatile" : ""),
84 Object.class,
85 long.class,
86 isChar ? char.class : int.class);
87 } else {
88 aMethod = aClass.getDeclaredMethod("get" + methodTypeName + (isVolatile ? "Volatile" : ""),
89 Object.class,
90 long.class);
91 }
92 } catch (NoSuchMethodException e) {
93 throw new RuntimeException("Test bug, method is unavailable. " + e);
94 } catch (ClassNotFoundException e) {
95 throw new RuntimeException("Test bug, class is unavailable. " + e);
96 }
97
98 return aMethod;
99 }
100
101 public static void test(int compLevel) {
102
103 Executable putChar = getMethod(true, /*isPut =*/ true, /*isVolatile = */ false);
104 Executable getChar = getMethod(true, /*isPut =*/ false, /*isVolatile = */ false);
105 Executable putCharVolatile = getMethod(true, /*isPut =*/ true, /*isVolatile = */ true);
106 Executable getCharVolatile = getMethod(true, /*isPut =*/ false, /*isVolatile = */ true);
107 Executable putInt = getMethod(false, /*isPut =*/ true, /*isVolatile = */ false);
108 Executable getInt = getMethod(false, /*isPut =*/ false, /*isVolatile = */ false);
109 Executable putIntVolatile = getMethod(false, /*isPut =*/ true, /*isVolatile = */ true);
110 Executable getIntVolatile = getMethod(false, /*isPut =*/ false, /*isVolatile = */ true);
111
112 /* Test if globally disabling intrinsics works. */
113 if (!wb.isIntrinsicAvailable(putChar, compLevel)) {
114 throw new RuntimeException("Intrinsic for [" + putChar.toGenericString() +
115 "] is not available globally although it should be.");
116 }
117
118 if (wb.isIntrinsicAvailable(putCharVolatile, compLevel)) {
119 throw new RuntimeException("Intrinsic for [" + putCharVolatile.toGenericString() +
120 "] is available globally although it should not be.");
121 }
122
123 if (wb.isIntrinsicAvailable(putInt, compLevel)) {
124 throw new RuntimeException("Intrinsic for [" + putInt.toGenericString() +
125 "] is available globally although it should not be.");
126 }
127
128 if (wb.isIntrinsicAvailable(putIntVolatile, compLevel)) {
129 throw new RuntimeException("Intrinsic for [" + putIntVolatile.toGenericString() +
130 "] is available globally although it should not be.");
131 }
132
133 /* Test if disabling intrinsics on a per-method level
134 * works. The method for which intrinsics are
135 * disabled (the compilation context) is putChar. */
136 if (!wb.isIntrinsicAvailable(getChar, putChar, compLevel)) {
137 throw new RuntimeException("Intrinsic for [" + getChar.toGenericString() +
138 "] is not available for intrinsification in [" +
139 putChar.toGenericString() + "] although it should be.");
140 }
141
142 if (wb.isIntrinsicAvailable(getCharVolatile, putChar, compLevel)) {
143 throw new RuntimeException("Intrinsic for [" + getCharVolatile.toGenericString() +
144 "] is available for intrinsification in [" +
145 putChar.toGenericString() + "] although it should not be.");
146 }
147
148 if (wb.isIntrinsicAvailable(getInt, putChar, compLevel)) {
149 throw new RuntimeException("Intrinsic for [" + getInt.toGenericString() +
150 "] is available for intrinsification in [" +
151 putChar.toGenericString() + "] although it should not be.");
152 }
153
154 if (wb.isIntrinsicAvailable(getIntVolatile, putCharVolatile, compLevel)) {
155 throw new RuntimeException("Intrinsic for [" + getIntVolatile.toGenericString() +
156 "] is available for intrinsification in [" +
157 putCharVolatile.toGenericString() + "] although it should not be.");
158 }
159
160 /* Test if disabling intrinsics on a per-method level
161 * leaves those intrinsics enabled globally. */
162 if (!wb.isIntrinsicAvailable(getCharVolatile, compLevel)) {
163 throw new RuntimeException("Intrinsic for [" + getCharVolatile.toGenericString() +
164 "] is not available globally although it should be.");
165 }
166
167 if (!wb.isIntrinsicAvailable(getInt, compLevel)) {
168 throw new RuntimeException("Intrinsic for [" + getInt.toGenericString() +
169 "] is not available globally although it should be.");
170 }
171
172
173 if (!wb.isIntrinsicAvailable(getIntVolatile, compLevel)) {
174 throw new RuntimeException("Intrinsic for [" + getIntVolatile.toGenericString() +
175 "] is not available globally although it should be.");
176 }
177
178 /* Test if disabling an intrinsic globally disables it on a
179 * per-method level as well. */
180 if (!wb.isIntrinsicAvailable(putChar, getChar, compLevel)) {
181 throw new RuntimeException("Intrinsic for [" + putChar.toGenericString() +
182 "] is not available for intrinsification in [" +
183 getChar.toGenericString() + "] although it should be.");
184 }
185
186 if (wb.isIntrinsicAvailable(putCharVolatile, getChar, compLevel)) {
187 throw new RuntimeException("Intrinsic for [" + putCharVolatile.toGenericString() +
188 "] is available for intrinsification in [" +
189 getChar.toGenericString() + "] although it should not be.");
190 }
191
192 if (wb.isIntrinsicAvailable(putInt, getChar, compLevel)) {
193 throw new RuntimeException("Intrinsic for [" + putInt.toGenericString() +
194 "] is available for intrinsification in [" +
195 getChar.toGenericString() + "] although it should not be.");
196 }
197
198 if (wb.isIntrinsicAvailable(putIntVolatile, getChar, compLevel)) {
199 throw new RuntimeException("Intrinsic for [" + putIntVolatile.toGenericString() +
200 "] is available for intrinsification in [" +
201 getChar.toGenericString() + "] although it should not be.");
202 }
203 }
204
205 public static void main(String args[]) {
206 if (isServerVM()) {
207 if (isTieredCompilationEnabled()) {
208 test(COMP_LEVEL_SIMPLE);
209 }
210 test(COMP_LEVEL_FULL_OPTIMIZATION);
211 } else {
212 test(COMP_LEVEL_SIMPLE);
213 }
214 }
215 }