1 /*
2 * Copyright (c) 2014, 2023, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5 * This code is free software; you can redistribute it and/or modify it
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7 * published by the Free Software Foundation.
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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,
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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
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22 */
23
24 /*
25 * @test OverloadCompileQueueTest
26 * @key stress randomness
27 * @summary stressing code cache by overloading compile queues
28 * @library /test/lib /
29 * @modules java.base/jdk.internal.misc
30 * java.management
31 *
32 * @build jdk.test.whitebox.WhiteBox
33 * compiler.codecache.stress.TestCaseImpl
34 * @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
35 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
36 * -XX:+WhiteBoxAPI
37 * -XX:CompileCommand=dontinline,compiler.codecache.stress.Helper$TestCase::method
38 * -XX:CompileCommand=exclude,java.lang.Thread::sleep
39 * -XX:CompileCommand=exclude,java.lang.Thread::sleepNanos
40 * -XX:CompileCommand=exclude,java.lang.Thread::beforeSleep
41 * -XX:CompileCommand=exclude,java.lang.Thread::afterSleep
42 * -XX:CompileCommand=exclude,java.lang.Math::min
43 * -XX:CompileCommand=exclude,jdk.internal.event.ThreadSleepEvent::*
44 * -XX:CompileCommand=exclude,jdk.internal.event.SleepEvent::*
45 * -XX:CompileCommand=exclude,jdk.internal.event.Event::*
46 * -XX:-SegmentedCodeCache
47 * compiler.codecache.stress.OverloadCompileQueueTest
48 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
49 * -XX:+WhiteBoxAPI
50 * -XX:CompileCommand=dontinline,compiler.codecache.stress.Helper$TestCase::method
51 * -XX:CompileCommand=exclude,java.lang.Thread::sleep
52 * -XX:CompileCommand=exclude,java.lang.Thread::sleepNanos
53 * -XX:CompileCommand=exclude,java.lang.Thread::beforeSleep
54 * -XX:CompileCommand=exclude,java.lang.Thread::afterSleep
55 * -XX:CompileCommand=exclude,java.lang.Math::min
56 * -XX:CompileCommand=exclude,jdk.internal.event.ThreadSleepEvent::*
57 * -XX:CompileCommand=exclude,jdk.internal.event.SleepEvent::*
58 * -XX:CompileCommand=exclude,jdk.internal.event.Event::*
59 * -XX:+SegmentedCodeCache
60 * compiler.codecache.stress.OverloadCompileQueueTest
61 */
62
63 package compiler.codecache.stress;
64
65 import jdk.test.lib.Platform;
66 import jdk.test.lib.Utils;
67
68 import java.lang.reflect.Method;
69 import java.util.stream.IntStream;
70 import java.util.Random;
71
72 class LockUnlockThread extends Thread {
73 private static final int MAX_SLEEP = 10000;
74 private static final int DELAY_BETWEEN_LOCKS = 100;
75 private final Random rng = Utils.getRandomInstance();
76
77 public volatile boolean isActive = true;
78
79 @Override
80 public void run() {
81 try {
82 while (isActive) {
83 int timeInLockedState = rng.nextInt(MAX_SLEEP);
84 Helper.WHITE_BOX.lockCompilation();
85 Thread.sleep(timeInLockedState);
86 Helper.WHITE_BOX.unlockCompilation();
87 Thread.sleep(DELAY_BETWEEN_LOCKS);
88 }
89 } catch (InterruptedException e) {
90 if (isActive) {
91 throw new Error("TESTBUG: LockUnlockThread was unexpectedly interrupted", e);
92 }
93 } finally {
94 Helper.WHITE_BOX.unlockCompilation();
95 }
96 }
97 }
98
99 public class OverloadCompileQueueTest implements Runnable {
100 private static final String METHOD_TO_ENQUEUE = "method";
101 private static final int LEVEL_SIMPLE = 1;
102 private static final int LEVEL_FULL_OPTIMIZATION = 4;
103 private static final boolean TIERED_COMPILATION
104 = Helper.WHITE_BOX.getBooleanVMFlag("TieredCompilation");
105 private static final int TIERED_STOP_AT_LEVEL
106 = Helper.WHITE_BOX.getIntxVMFlag("TieredStopAtLevel").intValue();
107 private static final int[] AVAILABLE_LEVELS;
108 static {
109 if (TIERED_COMPILATION) {
110 AVAILABLE_LEVELS = IntStream
111 .rangeClosed(LEVEL_SIMPLE, TIERED_STOP_AT_LEVEL)
112 .toArray();
113 } else if (Platform.isServer() && !Platform.isEmulatedClient()) {
114 AVAILABLE_LEVELS = new int[] { LEVEL_FULL_OPTIMIZATION };
115 } else if (Platform.isClient() || Platform.isMinimal() || Platform.isEmulatedClient()) {
116 AVAILABLE_LEVELS = new int[] { LEVEL_SIMPLE };
117 } else {
118 throw new Error("TESTBUG: unknown VM: " + Platform.vmName);
119 }
120 }
121
122 public static void main(String[] args) throws InterruptedException {
123 LockUnlockThread lockUnlockThread = new LockUnlockThread();
124 lockUnlockThread.start();
125
126 if (Platform.isInt()) {
127 throw new Error("TESTBUG: test can not be run in interpreter");
128 }
129 new CodeCacheStressRunner(new OverloadCompileQueueTest()).runTest();
130
131 lockUnlockThread.isActive = false;
132 lockUnlockThread.interrupt();
133 lockUnlockThread.join();
134 }
135
136 @Override
137 public void run() {
138 Helper.TestCase obj = Helper.TestCase.get();
139 Class clazz = obj.getClass();
140 Method mEnqueue;
141 try {
142 mEnqueue = clazz.getMethod(METHOD_TO_ENQUEUE);
143 } catch (NoSuchMethodException | SecurityException e) {
144 throw new Error(String.format(
145 "TESTBUG: cannot get method '%s' of class %s",
146 METHOD_TO_ENQUEUE, clazz.getName()), e);
147 }
148 for (int compLevel : AVAILABLE_LEVELS) {
149 Helper.WHITE_BOX.enqueueMethodForCompilation(mEnqueue, compLevel);
150 }
151 }
152
153 }