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 8072008
27 * @library /testlibrary /../../test/lib
28 * @build InvokeTest NonInlinedReinvoker
29 * @run main ClassFileInstaller sun.hotspot.WhiteBox
30 * sun.hotspot.WhiteBox$WhiteBoxPermission
31 * java.lang.invoke.InvokeTest
32 * java.lang.invoke.InvokeTest$T
33 * java.lang.invoke.InvokeTest$P1
34 * java.lang.invoke.InvokeTest$P2
35 * java.lang.invoke.InvokeTest$I
36 * java.lang.invoke.NonInlinedReinvoker
37 * jdk.test.lib.Asserts
38 * @run main/othervm -Xbootclasspath/a:. -XX:+IgnoreUnrecognizedVMOptions
39 * -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
40 * -Xbatch -XX:-TieredCompilation -XX:CICompilerCount=1
41 * java.lang.invoke.InvokeTest
42 */
43 package java.lang.invoke;
44
45 import sun.hotspot.WhiteBox;
46
47 import jdk.internal.vm.annotation.DontInline;
48
49 import static jdk.test.lib.Asserts.*;
50
51 public class InvokeTest {
52 static MethodHandles.Lookup LOOKUP = MethodHandles.Lookup.IMPL_LOOKUP;
53
54 static final MethodHandle virtualMH; // invokevirtual T.f1
55 static final MethodHandle staticMH; // invokestatic T.f2
56 static final MethodHandle intfMH; // invokeinterface I.f1
57 static final MethodHandle specialMH; // invokespecial T.f4 T
58 static final MethodHandle basicMH;
59
60 static final WhiteBox WB = WhiteBox.getWhiteBox();
61
62 static volatile boolean doDeopt = false;
63
64 static {
65 try {
66 MethodType mtype = MethodType.methodType(Class.class);
67
68 virtualMH = LOOKUP.findVirtual(T.class, "f1", mtype);
69 staticMH = LOOKUP.findStatic (T.class, "f2", mtype);
70 intfMH = LOOKUP.findVirtual(I.class, "f3", mtype);
71 specialMH = LOOKUP.findSpecial(T.class, "f4", mtype, T.class);
72 basicMH = NonInlinedReinvoker.make(staticMH);
73 } catch (Exception e) {
74 throw new Error(e);
75 }
76 }
77
78 static class T implements I {
79 @DontInline public Class<?> f1() { if (doDeopt) WB.deoptimize(); return T.class; }
80 @DontInline public static Class<?> f2() { if (doDeopt) WB.deoptimize(); return T.class; }
81 @DontInline private Class<?> f4() { if (doDeopt) WB.deoptimize(); return T.class; }
82 }
83
84 static class P1 extends T {
85 @DontInline public Class<?> f1() { if (doDeopt) WB.deoptimize(); return P1.class; }
86 @DontInline public Class<?> f3() { if (doDeopt) WB.deoptimize(); return P1.class; }
87 }
88
89 static class P2 extends T {
90 @DontInline public Class<?> f1() { if (doDeopt) WB.deoptimize(); return P2.class; }
91 @DontInline public Class<?> f3() { if (doDeopt) WB.deoptimize(); return P2.class; }
92 }
93
94 static interface I {
95 @DontInline default Class<?> f3() { if (doDeopt) WB.deoptimize(); return I.class; }
96 }
97
98 @DontInline
99 static void linkToVirtual(Object obj, Class<?> extecpted) {
100 try {
101 Class<?> cls = (Class<?>)virtualMH.invokeExact((T)obj);
102 assertEquals(cls, obj.getClass());
103 } catch (Throwable e) {
104 throw new Error(e);
105 }
106 }
107
108 @DontInline
109 static void linkToInterface(Object obj, Class<?> expected) {
110 try {
111 Class<?> cls = (Class<?>)intfMH.invokeExact((I)obj);
112 assertEquals(cls, expected);
113 } catch (Throwable e) {
114 throw new Error(e);
115 }
116 }
117
118 @DontInline
119 static void linkToStatic() {
120 try {
121 Class<?> cls = (Class<?>)staticMH.invokeExact();
122 assertEquals(cls, T.class);
123 } catch (Throwable e) {
124 throw new Error(e);
125 }
126 }
127
128 @DontInline
129 static void linkToSpecial(Object obj, Class<?> expected) {
130 try {
131 Class<?> cls = (Class<?>)specialMH.invokeExact((T)obj);
132 assertEquals(cls, expected);
133 } catch (Throwable e) {
134 throw new Error(e);
135 }
136 }
137
138 @DontInline
139 static void invokeBasic() {
140 try {
141 Class<?> cls = (Class<?>)basicMH.invokeBasic();
142 assertEquals(cls, T.class);
143 } catch (Throwable e) {
144 throw new Error(e);
145 }
146 }
147
148 static void run(Runnable r) {
149 for (int i = 0; i < 20_000; i++) {
150 r.run();
151 }
152
153 doDeopt = true;
154 r.run();
155 doDeopt = false;
156
157 WB.clearInlineCaches();
158
159 for (int i = 0; i < 20_000; i++) {
160 r.run();
161 }
162
163 doDeopt = true;
164 r.run();
165 doDeopt = false;
166 }
167
168 static void testVirtual() {
169 System.out.println("linkToVirtual");
170
171 // Monomorphic case (optimized virtual call)
172 run(() -> linkToVirtual(new T(), T.class));
173
174 // Megamorphic case (virtual call)
175 Object[] recv = new Object[] { new T(), new P1(), new P2() };
176 run(() -> {
177 for (Object r : recv) {
178 linkToVirtual(r, r.getClass());
179 }});
180 }
181
182 static void testInterface() {
183 System.out.println("linkToInterface");
184
185 // Monomorphic case (optimized virtual call)
186 run(() -> linkToInterface(new T(), I.class));
187
188 // Megamorphic case (virtual call)
189 Object[][] recv = new Object[][] {{new T(), I.class}, {new P1(), P1.class}, {new P2(), P2.class}};
190 run(() -> {
191 for (Object[] r : recv) {
192 linkToInterface(r[0], (Class<?>)r[1]);
193 }});
194 }
195
196 static void testSpecial() {
197 System.out.println("linkToSpecial");
198 // Monomorphic case (optimized virtual call)
199 run(() -> linkToSpecial(new T(), T.class));
200 }
201
202 static void testStatic() {
203 System.out.println("linkToStatic");
204 // static call
205 run(() -> linkToStatic());
206 }
207
208 static void testBasic() {
209 System.out.println("invokeBasic");
210 // static call
211 run(() -> invokeBasic());
212 }
213
214 public static void main(String[] args) {
215 testVirtual();
216 testInterface();
217 testSpecial();
218 testStatic();
219 testBasic();
220 }
221 }