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comparison test/compiler/whitebox/DeoptimizeMultipleOSRTest.java @ 20611:3c87c13918fb

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8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method Summary: Fixed Whitebox.deoptimizeMethod() to deoptimize all OSR versions of the method. Reviewed-by: kvn, iignatyev
author thartmann
date Thu, 30 Oct 2014 13:03:30 +0100
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20610:d4562805b030 20611:3c87c13918fb
1 /*
2 * Copyright (c) 2013, 2014, 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 import sun.hotspot.WhiteBox;
25 import java.lang.reflect.Executable;
26 import java.lang.reflect.Method;
27
28 /*
29 * @test DeoptimizeMultipleOSRTest
30 * @bug 8061817
31 * @library /testlibrary /testlibrary/whitebox
32 * @build DeoptimizeMultipleOSRTest
33 * @run main ClassFileInstaller sun.hotspot.WhiteBox
34 * sun.hotspot.WhiteBox$WhiteBoxPermission
35 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:CompileCommand=compileonly,DeoptimizeMultipleOSRTest::triggerOSR DeoptimizeMultipleOSRTest
36 * @summary testing of WB::deoptimizeMethod()
37 */
38 public class DeoptimizeMultipleOSRTest {
39 private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox();
40 private static final long BACKEDGE_THRESHOLD = 150000;
41 private Method method;
42 private int counter = 0;
43
44 public static void main(String[] args) throws Exception {
45 DeoptimizeMultipleOSRTest test = new DeoptimizeMultipleOSRTest();
46 test.test();
47 }
48
49 /**
50 * Triggers two different OSR compilations for the same method and
51 * checks if WhiteBox.deoptimizeMethod() deoptimizes both.
52 *
53 * @throws Exception
54 */
55 public void test() throws Exception {
56 method = DeoptimizeMultipleOSRTest.class.getDeclaredMethod("triggerOSR", boolean.class, long.class);
57 // Trigger two OSR compiled versions
58 triggerOSR(true, BACKEDGE_THRESHOLD);
59 triggerOSR(false, BACKEDGE_THRESHOLD);
60 // Wait for compilation
61 CompilerWhiteBoxTest.waitBackgroundCompilation(method);
62 // Deoptimize
63 WHITE_BOX.deoptimizeMethod(method, true);
64 if (WHITE_BOX.isMethodCompiled(method, true)) {
65 throw new AssertionError("Not all OSR compiled versions were deoptimized");
66 }
67 }
68
69 /**
70 * Triggers OSR compilations by executing loops.
71 *
72 * @param first Determines which loop to execute
73 * @param limit The number of loop iterations
74 */
75 public void triggerOSR(boolean first, long limit) {
76 if (limit != 1) {
77 // Warmup method to avoid uncommon traps
78 for (int i = 0; i < limit; ++i) {
79 triggerOSR(first, 1);
80 }
81 CompilerWhiteBoxTest.waitBackgroundCompilation(method);
82 }
83 if (first) {
84 // Trigger OSR compilation 1
85 for (int i = 0; i < limit; ++i) {
86 counter++;
87 }
88 } else {
89 // Trigger OSR compilation 2
90 for (int i = 0; i < limit; ++i) {
91 counter++;
92 }
93 }
94 }
95 }