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 /test/lib / ../patches
28 * @modules java.base/jdk.internal.misc
29 * java.base/jdk.internal.vm.annotation
30 *
31 * @build java.base/java.lang.invoke.MethodHandleHelper
32 * sun.hotspot.WhiteBox
33 * @run main/bootclasspath/othervm -XX:+IgnoreUnrecognizedVMOptions
34 * -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
35 * -Xbatch -XX:-TieredCompilation -XX:CICompilerCount=1
36 * compiler.jsr292.NonInlinedCall.InvokeTest
37 */
38
39 package compiler.jsr292.NonInlinedCall;
40
41 import jdk.internal.vm.annotation.DontInline;
42 import sun.hotspot.WhiteBox;
43
44 import java.lang.invoke.MethodHandle;
45 import java.lang.invoke.MethodHandleHelper;
46 import java.lang.invoke.MethodHandleHelper.NonInlinedReinvoker;
47 import java.lang.invoke.MethodHandles;
48 import java.lang.invoke.MethodType;
49
50 import static jdk.test.lib.Asserts.assertEquals;
51
52 public class InvokeTest {
53 static MethodHandles.Lookup LOOKUP = MethodHandleHelper.IMPL_LOOKUP;
54
55 static final MethodHandle virtualMH; // invokevirtual T.f1
56 static final MethodHandle staticMH; // invokestatic T.f2
57 static final MethodHandle intfMH; // invokeinterface I.f1
58 static final MethodHandle specialMH; // invokespecial T.f4 T
59 static final MethodHandle basicMH;
60
61 static final WhiteBox WB = WhiteBox.getWhiteBox();
62
63 static volatile boolean doDeopt = false;
64
65 static {
66 try {
67 MethodType mtype = MethodType.methodType(Class.class);
68
69 virtualMH = LOOKUP.findVirtual(T.class, "f1", mtype);
70 staticMH = LOOKUP.findStatic (T.class, "f2", mtype);
71 intfMH = LOOKUP.findVirtual(I.class, "f3", mtype);
72 specialMH = LOOKUP.findSpecial(T.class, "f4", mtype, T.class);
73 basicMH = NonInlinedReinvoker.make(staticMH);
74 } catch (Exception e) {
75 throw new Error(e);
76 }
77 }
78
79 static class T implements I {
80 @DontInline public Class<?> f1() { if (doDeopt) WB.deoptimizeAll(); return T.class; }
81 @DontInline public static Class<?> f2() { if (doDeopt) WB.deoptimizeAll(); return T.class; }
82 @DontInline private Class<?> f4() { if (doDeopt) WB.deoptimizeAll(); return T.class; }
83 }
84
85 static class P1 extends T {
86 @DontInline public Class<?> f1() { if (doDeopt) WB.deoptimizeAll(); return P1.class; }
87 @DontInline public Class<?> f3() { if (doDeopt) WB.deoptimizeAll(); return P1.class; }
88 }
89
90 static class P2 extends T {
91 @DontInline public Class<?> f1() { if (doDeopt) WB.deoptimizeAll(); return P2.class; }
92 @DontInline public Class<?> f3() { if (doDeopt) WB.deoptimizeAll(); return P2.class; }
93 }
94
95 static interface I {
96 @DontInline default Class<?> f3() { if (doDeopt) WB.deoptimizeAll(); return I.class; }
97 }
98
99 @DontInline
100 static void linkToVirtual(Object obj, Class<?> extecpted) {
101 try {
102 Class<?> cls = (Class<?>)virtualMH.invokeExact((T)obj);
103 assertEquals(cls, obj.getClass());
104 } catch (Throwable e) {
105 throw new Error(e);
106 }
107 }
108
109 @DontInline
110 static void linkToInterface(Object obj, Class<?> expected) {
111 try {
112 Class<?> cls = (Class<?>)intfMH.invokeExact((I)obj);
113 assertEquals(cls, expected);
114 } catch (Throwable e) {
115 throw new Error(e);
116 }
117 }
118
119 @DontInline
120 static void linkToStatic() {
121 try {
122 Class<?> cls = (Class<?>)staticMH.invokeExact();
123 assertEquals(cls, T.class);
124 } catch (Throwable e) {
125 throw new Error(e);
126 }
127 }
128
129 @DontInline
130 static void linkToSpecial(Object obj, Class<?> expected) {
131 try {
132 Class<?> cls = (Class<?>)specialMH.invokeExact((T)obj);
133 assertEquals(cls, expected);
134 } catch (Throwable e) {
135 throw new Error(e);
136 }
137 }
138
139 @DontInline
140 static void invokeBasic() {
141 try {
142 Class<?> cls = (Class<?>)MethodHandleHelper.invokeBasicL(basicMH);
143 assertEquals(cls, T.class);
144 } catch (Throwable e) {
145 throw new Error(e);
146 }
147 }
148
149 static void run(Runnable r) {
150 for (int i = 0; i < 20_000; i++) {
151 r.run();
152 }
153
154 doDeopt = true;
155 r.run();
156 doDeopt = false;
157
158 WB.clearInlineCaches();
159
160 for (int i = 0; i < 20_000; i++) {
161 r.run();
162 }
163
164 doDeopt = true;
165 r.run();
166 doDeopt = false;
167 }
168
169 static void testVirtual() {
170 System.out.println("linkToVirtual");
171
172 // Monomorphic case (optimized virtual call)
173 run(() -> linkToVirtual(new T(), T.class));
174
175 // Megamorphic case (virtual call)
176 Object[] recv = new Object[] { new T(), new P1(), new P2() };
177 run(() -> {
178 for (Object r : recv) {
179 linkToVirtual(r, r.getClass());
180 }});
181 }
182
183 static void testInterface() {
184 System.out.println("linkToInterface");
185
186 // Monomorphic case (optimized virtual call), concrete target method
187 run(() -> linkToInterface(new P1(), P1.class));
188
189 // Monomorphic case (optimized virtual call), default target method
190 run(() -> linkToInterface(new T(), I.class));
191
192 // Megamorphic case (virtual call)
193 Object[][] recv = new Object[][] {{new T(), I.class}, {new P1(), P1.class}, {new P2(), P2.class}};
194 run(() -> {
195 for (Object[] r : recv) {
196 linkToInterface(r[0], (Class<?>)r[1]);
197 }});
198 }
199
200 static void testSpecial() {
201 System.out.println("linkToSpecial");
202 // Monomorphic case (optimized virtual call)
203 run(() -> linkToSpecial(new T(), T.class));
204 }
205
206 static void testStatic() {
207 System.out.println("linkToStatic");
208 // static call
209 run(() -> linkToStatic());
210 }
211
212 static void testBasic() {
213 System.out.println("invokeBasic");
214 // static call
215 run(() -> invokeBasic());
216 }
217
218 public static void main(String[] args) {
219 testVirtual();
220 testInterface();
221 testSpecial();
222 testStatic();
223 testBasic();
224 }
225 }