1 /*
2 * Copyright (c) 2014, 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 DeoptimizeFramesTest
26 * @bug 8028595
27 * @library /testlibrary /../../test/lib
28 * @modules java.management
29 * @build DeoptimizeFramesTest
30 * @run main ClassFileInstaller sun.hotspot.WhiteBox
31 * sun.hotspot.WhiteBox$WhiteBoxPermission
32 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
33 * -XX:+WhiteBoxAPI -Xmixed
34 * -XX:CompileCommand=compileonly,DeoptimizeFramesTest$TestCaseImpl::method
35 * -XX:+IgnoreUnrecognizedVMOptions -XX:-DeoptimizeRandom -XX:-DeoptimizeALot
36 * DeoptimizeFramesTest true
37 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
38 * -XX:+WhiteBoxAPI -Xmixed
39 * -XX:CompileCommand=compileonly,DeoptimizeFramesTest$TestCaseImpl::method
40 * -XX:+IgnoreUnrecognizedVMOptions -XX:-DeoptimizeRandom -XX:-DeoptimizeALot
41 * DeoptimizeFramesTest false
42 * @summary testing of WB::deoptimizeFrames()
43 */
44 import java.lang.reflect.Executable;
45 import java.util.concurrent.Callable;
46 import java.util.concurrent.Phaser;
47
48 import sun.hotspot.code.NMethod;
49 import jdk.test.lib.Asserts;
50 import jdk.test.lib.InfiniteLoop;
51
52 public class DeoptimizeFramesTest extends CompilerWhiteBoxTest {
53 private final boolean makeNotEntrant;
54 private final Phaser phaser;
55
56 private DeoptimizeFramesTest(boolean makeNotEntrant, Phaser phaser) {
57 super(new TestCaseImpl(phaser));
58 // to prevent inlining of #method
59 WHITE_BOX.testSetDontInlineMethod(method, true);
60 this.makeNotEntrant = makeNotEntrant;
61 this.phaser = phaser;
62 System.out.printf("DeoptimizeFramesTest(makeNotEntrant = %b)%n",
63 makeNotEntrant);
64 }
65
66 public static void main(String[] args) throws Exception {
67 Asserts.assertEQ(args.length, 1,
68 "[TESTBUG] args should contain 1 element");
69 new DeoptimizeFramesTest(Boolean.valueOf(args[0]), new Phaser()).runTest();
70 }
71
72 @Override
73 protected void test() throws Exception {
74 compile();
75 checkCompiled();
76 NMethod nm = NMethod.get(method, testCase.isOsr());
77
78 WHITE_BOX.deoptimizeFrames(makeNotEntrant);
79 // #method should still be compiled, since it didn't have frames on stack
80 checkCompiled();
81 NMethod nm2 = NMethod.get(method, testCase.isOsr());
82 Asserts.assertEQ(nm.compile_id, nm2.compile_id,
83 "should be the same nmethod");
84
85 phaser.register();
86 Thread t = new Thread(() -> compile(1));
87 t.start();
88 // pass 1st phase, #method is on stack
89 int p = phaser.arriveAndAwaitAdvance();
90 WHITE_BOX.deoptimizeFrames(makeNotEntrant);
91 // pass 2nd phase, #method can exit
92 phaser.awaitAdvance(phaser.arriveAndDeregister());
93
94 try {
95 t.join();
96 } catch (InterruptedException e) {
97 throw new Error("method '" + method + "' is still executing", e);
98 }
99
100 // invoke one more time to recompile not entrant if any
101 compile(1);
102
103 nm2 = NMethod.get(method, testCase.isOsr());
104 if (makeNotEntrant) {
105 if (nm2 != null) {
106 Asserts.assertNE(nm.compile_id, nm2.compile_id,
107 String.format("compilation %d can't be available", nm.compile_id));
108 }
109 } else {
110 Asserts.assertEQ(nm.compile_id, nm2.compile_id, "should be the same nmethod");
111 }
112 }
113
114
115 private static class TestCaseImpl implements TestCase {
116 private static final Executable EXECUTABLE;
117 static {
118 try {
119 EXECUTABLE = TestCaseImpl.class.getDeclaredMethod("method");
120 } catch (NoSuchMethodException e) {
121 throw new Error("[TESTBUG] method not found", e);
122 }
123 }
124
125 private final Phaser phaser;
126
127 public TestCaseImpl(Phaser phaser) {
128 this.phaser = phaser;
129 phaser.register();
130 }
131
132 @Override
133 public String name() {
134 return "2phases";
135 }
136
137 @Override
138 public Executable getExecutable() {
139 return EXECUTABLE;
140 }
141
142 @Override
143 public Callable<Integer> getCallable() {
144 return () -> {
145 return method();
146 };
147 }
148
149 @Override
150 public boolean isOsr() {
151 return false;
152 }
153
154 private int method() {
155 phaser.arriveAndAwaitAdvance();
156 phaser.arriveAndAwaitAdvance();
157 return 0;
158 }
159 }
160 }