1 /*
2 * Copyright (c) 2016, 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 * @library /test/lib /
27 *
28 * @run driver compiler.jsr292.ContinuousCallSiteTargetChange
29 */
30
31 package compiler.jsr292;
32
33 import jdk.test.lib.Asserts;
34 import jdk.test.lib.process.OutputAnalyzer;
35 import jdk.test.lib.process.ProcessTools;
36
37 import java.lang.invoke.CallSite;
38 import java.lang.invoke.MethodHandle;
39 import java.lang.invoke.MethodHandles;
40 import java.lang.invoke.MethodType;
41 import java.lang.invoke.MutableCallSite;
42 import java.util.ArrayList;
43 import java.util.Arrays;
44 import java.util.List;
45
46 public class ContinuousCallSiteTargetChange {
47 static final int ITERATIONS = Integer.parseInt(System.getProperty("iterations", "50"));
48
49 static void runTest(Class<?> test, String... extraArgs) throws Exception {
50 List<String> argsList = new ArrayList<>(
51 List.of("-XX:+IgnoreUnrecognizedVMOptions",
52 "-XX:PerBytecodeRecompilationCutoff=10", "-XX:PerMethodRecompilationCutoff=10",
53 "-XX:+PrintCompilation", "-XX:+UnlockDiagnosticVMOptions", "-XX:+PrintInlining"));
54
55 argsList.addAll(Arrays.asList(extraArgs));
56
57 argsList.add(test.getName());
58 argsList.add(Integer.toString(ITERATIONS));
59
60 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
61 argsList.toArray(new String[argsList.size()]));
62
63 OutputAnalyzer analyzer = new OutputAnalyzer(pb.start());
64
65 analyzer.shouldHaveExitValue(0);
66
67 analyzer.shouldNotContain("made not compilable");
68 analyzer.shouldNotContain("decompile_count > PerMethodRecompilationCutoff");
69
70 }
71
72 static void testServer(Class<?> test, String... args) throws Exception {
73 List<String> extraArgsList = new ArrayList<>(
74 List.of("-server", "-XX:-TieredCompilation"));
75 extraArgsList.addAll(Arrays.asList(args));
76
77 runTest(test, extraArgsList.toArray(new String[extraArgsList.size()]));
78 }
79
80 static void testClient(Class<?> test, String... args) throws Exception {
81 List<String> extraArgsList = new ArrayList<>(
82 List.of("-client", "-XX:+TieredCompilation", "-XX:TieredStopAtLevel=1"));
83 extraArgsList.addAll(Arrays.asList(args));
84
85 runTest(test, extraArgsList.toArray(new String[extraArgsList.size()]));
86 }
87
88 public static void main(String[] args) throws Exception {
89 testServer(RecompilationTest.class, "-Xbatch");
90 testClient(RecompilationTest.class, "-Xbatch");
91
92 testServer(PingPongTest.class);
93 testClient(PingPongTest.class);
94 }
95
96 static MethodHandle findStatic(Class<?> cls, String name, MethodType mt) {
97 try {
98 return MethodHandles.lookup().findStatic(cls, name, mt);
99 } catch (Exception e) {
100 throw new Error(e);
101 }
102 }
103
104 static class RecompilationTest {
105 static final MethodType mt = MethodType.methodType(void.class);
106 static final CallSite cs = new MutableCallSite(mt);
107
108 static final MethodHandle mh = cs.dynamicInvoker();
109
110 static void f() {
111 }
112
113 static void test1() throws Throwable {
114 mh.invokeExact();
115 }
116
117 static void test2() throws Throwable {
118 cs.getTarget().invokeExact();
119 }
120
121 static void iteration() throws Throwable {
122 MethodHandle mh1 = findStatic(RecompilationTest.class, "f", mt);
123 cs.setTarget(mh1);
124 for (int i = 0; i < 20_000; i++) {
125 test1();
126 test2();
127 }
128 }
129
130 public static void main(String[] args) throws Throwable {
131 int iterations = Integer.parseInt(args[0]);
132 for (int i = 0; i < iterations; i++) {
133 iteration();
134 }
135 }
136 }
137
138 static class PingPongTest {
139 static final MethodType mt = MethodType.methodType(void.class);
140 static final CallSite cs = new MutableCallSite(mt);
141
142 static final MethodHandle mh = cs.dynamicInvoker();
143
144 static final MethodHandle ping = findStatic(PingPongTest.class, "ping", mt);
145 static final MethodHandle pong = findStatic(PingPongTest.class, "pong", mt);
146
147 static void ping() {
148 Asserts.assertEQ(cs.getTarget(), ping, "wrong call site target");
149 cs.setTarget(pong);
150 }
151
152 static void pong() {
153 Asserts.assertEQ(cs.getTarget(), pong, "wrong call site target");
154 cs.setTarget(ping);
155 }
156
157 static void iteration() throws Throwable {
158 cs.setTarget(ping);
159 for (int i = 0; i < 20_000; i++) {
160 mh.invokeExact();
161 }
162 }
163
164 public static void main(String[] args) throws Throwable {
165 int iterations = Integer.parseInt(args[0]);
166 for (int i = 0; i < iterations; i++) {
167 iteration();
168 }
169 }
170 }
171 }