1 /*
2 * Copyright (c) 2014, 2024, 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).
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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$TestCase::method
38 * -XX:CompileCommand=exclude,java.lang.Thread::sleep
39 * -XX:CompileCommand=exclude,java.lang.Thread::sleepNanos
40 * -XX:CompileCommand=exclude,java.lang.Thread::beforeSleep
41 * -XX:CompileCommand=exclude,java.lang.Thread::afterSleep
42 * -XX:CompileCommand=exclude,java.util.concurrent.TimeUnit::toNanos
43 * -XX:CompileCommand=exclude,java.lang.Math::min
44 * -XX:CompileCommand=exclude,jdk.internal.event.ThreadSleepEvent::*
45 * -XX:CompileCommand=exclude,jdk.internal.event.SleepEvent::*
46 * -XX:CompileCommand=exclude,jdk.internal.event.Event::*
47 * -XX:-SegmentedCodeCache
48 * compiler.codecache.stress.OverloadCompileQueueTest
49 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
50 * -XX:+WhiteBoxAPI
51 * -XX:CompileCommand=dontinline,compiler.codecache.stress.Helper$TestCase::method
52 * -XX:CompileCommand=exclude,java.lang.Thread::sleep
53 * -XX:CompileCommand=exclude,java.lang.Thread::sleepNanos
54 * -XX:CompileCommand=exclude,java.lang.Thread::beforeSleep
55 * -XX:CompileCommand=exclude,java.lang.Thread::afterSleep
56 * -XX:CompileCommand=exclude,java.util.concurrent.TimeUnit::toNanos
57 * -XX:CompileCommand=exclude,java.lang.Math::min
58 * -XX:CompileCommand=exclude,jdk.internal.event.ThreadSleepEvent::*
59 * -XX:CompileCommand=exclude,jdk.internal.event.SleepEvent::*
60 * -XX:CompileCommand=exclude,jdk.internal.event.Event::*
61 * -XX:+SegmentedCodeCache
62 * compiler.codecache.stress.OverloadCompileQueueTest
63 */
64
65 package compiler.codecache.stress;
66
67 import jdk.test.lib.Platform;
68 import jdk.test.lib.Utils;
69
70 import java.lang.reflect.Method;
71 import java.util.stream.IntStream;
72 import java.util.Random;
73
74 class LockUnlockThread extends Thread {
75 private static final int MAX_SLEEP = 10000;
76 private static final int DELAY_BETWEEN_LOCKS = 100;
77 private final Random rng = Utils.getRandomInstance();
78
79 public volatile boolean isActive = true;
80
81 @Override
82 public void run() {
83 try {
84 while (isActive) {
85 int timeInLockedState = rng.nextInt(MAX_SLEEP);
86 Helper.WHITE_BOX.lockCompilation();
87 Thread.sleep(timeInLockedState);
88 Helper.WHITE_BOX.unlockCompilation();
89 Thread.sleep(DELAY_BETWEEN_LOCKS);
90 }
91 } catch (InterruptedException e) {
92 if (isActive) {
93 throw new Error("TESTBUG: LockUnlockThread was unexpectedly interrupted", e);
94 }
95 } finally {
96 Helper.WHITE_BOX.unlockCompilation();
97 }
98 }
99 }
100
101 public class OverloadCompileQueueTest implements Runnable {
102 private static final String METHOD_TO_ENQUEUE = "method";
103 private static final int LEVEL_SIMPLE = 1;
104 private static final int LEVEL_FULL_OPTIMIZATION = 4;
105 private static final boolean TIERED_COMPILATION
106 = Helper.WHITE_BOX.getBooleanVMFlag("TieredCompilation");
107 private static final int TIERED_STOP_AT_LEVEL
108 = Helper.WHITE_BOX.getIntxVMFlag("TieredStopAtLevel").intValue();
109 private static final int[] AVAILABLE_LEVELS;
110 static {
111 if (TIERED_COMPILATION) {
112 AVAILABLE_LEVELS = IntStream
113 .rangeClosed(LEVEL_SIMPLE, TIERED_STOP_AT_LEVEL)
114 .toArray();
115 } else if (Platform.isServer() && !Platform.isEmulatedClient()) {
116 AVAILABLE_LEVELS = new int[] { LEVEL_FULL_OPTIMIZATION };
117 } else if (Platform.isClient() || Platform.isMinimal() || Platform.isEmulatedClient()) {
118 AVAILABLE_LEVELS = new int[] { LEVEL_SIMPLE };
119 } else {
120 throw new Error("TESTBUG: unknown VM: " + Platform.vmName);
121 }
122 }
123
124 public static void main(String[] args) throws InterruptedException {
125 LockUnlockThread lockUnlockThread = new LockUnlockThread();
126 lockUnlockThread.start();
127
128 if (Platform.isInt()) {
129 throw new Error("TESTBUG: test can not be run in interpreter");
130 }
131 new CodeCacheStressRunner(new OverloadCompileQueueTest()).runTest();
132
133 lockUnlockThread.isActive = false;
134 lockUnlockThread.interrupt();
135 lockUnlockThread.join();
136 }
137
138 @Override
139 public void run() {
140 Helper.TestCase obj = Helper.TestCase.get();
141 Class clazz = obj.getClass();
142 Method mEnqueue;
143 try {
144 mEnqueue = clazz.getMethod(METHOD_TO_ENQUEUE);
145 } catch (NoSuchMethodException | SecurityException e) {
146 throw new Error(String.format(
147 "TESTBUG: cannot get method '%s' of class %s",
148 METHOD_TO_ENQUEUE, clazz.getName()), e);
149 }
150 for (int compLevel : AVAILABLE_LEVELS) {
151 Helper.WHITE_BOX.enqueueMethodForCompilation(mEnqueue, compLevel);
152 }
153 }
154
155 }