200 lines
8.4 KiB
Java
200 lines
8.4 KiB
Java
/*
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* Copyright (c) 2020, 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import jdk.test.lib.process.ProcessTools;
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import jdk.test.lib.process.OutputAnalyzer;
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import java.util.*;
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import java.util.stream.*;
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/*
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* @test
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* @bug 8242263
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* @summary Exercise DiagnoseSyncOnValueBasedClasses diagnostic flag
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* @requires vm.flagless
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* @requires vm.flavor != "zero"
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* @library /test/lib
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* @run main/othervm/timeout=180000 SyncOnValueBasedClassTest
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*/
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public class SyncOnValueBasedClassTest {
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static final int LOOP_COUNT = 3000;
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static final int THREAD_COUNT = 2;
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static String[] fatalTests[];
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static String[] logTests[];
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static List<Object> testObjects = new ArrayList<Object>();
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private static final String[] specificFlags[] = {
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{"-Xint"},
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{"-Xcomp", "-XX:TieredStopAtLevel=1"},
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{"-Xcomp", "-XX:-TieredCompilation"},
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};
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private static void initTestObjects() {
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testObjects.add(Character.valueOf('H'));
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testObjects.add(Boolean.valueOf(true));
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testObjects.add(Byte.valueOf((byte)0x40));
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testObjects.add(Short.valueOf((short)0x4000));
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testObjects.add(Integer.valueOf(0x40000000));
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testObjects.add(Long.valueOf(0x4000000000000000L));
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testObjects.add(Float.valueOf(1.20f));
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testObjects.add(Double.valueOf(1.2345));
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}
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private static void generateTests() {
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initTestObjects();
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String[] commonFatalTestsFlags = {"-XX:+UnlockDiagnosticVMOptions", "-XX:-CreateCoredumpOnCrash", "-XX:DiagnoseSyncOnValueBasedClasses=1"};
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fatalTests = new String[specificFlags.length * testObjects.size()][];
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for (int i = 0; i < specificFlags.length; i++) {
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for (int j = 0; j < testObjects.size(); j++) {
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int index = i * testObjects.size() + j;
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fatalTests[index] = Stream.of(commonFatalTestsFlags, specificFlags[i], new String[] {"SyncOnValueBasedClassTest$FatalTest", Integer.toString(j)})
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.flatMap(Stream::of)
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.toArray(String[]::new);
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}
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}
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String[] commonLogTestsFlags = {"-XX:+UnlockDiagnosticVMOptions", "-XX:DiagnoseSyncOnValueBasedClasses=2"};
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logTests = new String[specificFlags.length][];
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for (int i = 0; i < specificFlags.length; i++) {
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logTests[i] = Stream.of(commonLogTestsFlags, specificFlags[i], new String[] {"SyncOnValueBasedClassTest$LogTest"})
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.flatMap(Stream::of)
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.toArray(String[]::new);
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}
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}
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public static void main(String[] args) throws Exception {
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generateTests();
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for (int i = 0; i < fatalTests.length; i++) {
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ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(fatalTests[i]);
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OutputAnalyzer output = ProcessTools.executeProcess(pb);
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output.shouldContain("fatal error: Synchronizing on object");
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output.shouldNotContain("synchronization on value based class did not fail");
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output.shouldNotHaveExitValue(0);
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}
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for (int i = 0; i < logTests.length; i++) {
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ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(logTests[i]);
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OutputAnalyzer output = ProcessTools.executeProcess(pb);
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output.shouldHaveExitValue(0);
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checkOutput(output);
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}
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virtualThreadTests();
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}
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private static void checkOutput(OutputAnalyzer output) {
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String out = output.getOutput();
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assertTrue(out.matches("(?s).*Synchronizing on object 0[xX][0-9a-fA-F]+ of klass java\\.lang\\.Character.*"));
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assertTrue(out.matches("(?s).*Synchronizing on object 0[xX][0-9a-fA-F]+ of klass java\\.lang\\.Boolean.*"));
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assertTrue(out.matches("(?s).*Synchronizing on object 0[xX][0-9a-fA-F]+ of klass java\\.lang\\.Byte.*"));
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assertTrue(out.matches("(?s).*Synchronizing on object 0[xX][0-9a-fA-F]+ of klass java\\.lang\\.Short.*"));
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assertTrue(out.matches("(?s).*Synchronizing on object 0[xX][0-9a-fA-F]+ of klass java\\.lang\\.Integer.*"));
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assertTrue(out.matches("(?s).*Synchronizing on object 0[xX][0-9a-fA-F]+ of klass java\\.lang\\.Long.*"));
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String[] res = out.split("Synchronizing on object 0[xX][0-9a-fA-F]+ of klass java\\.lang\\.Float\\R");
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assertTrue(res.length - 1 == (LOOP_COUNT * THREAD_COUNT + 1), res.length - 1);
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}
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private static void assertTrue(boolean condition) {
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if (!condition) {
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throw new RuntimeException("No synchronization matches");
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}
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}
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private static void assertTrue(boolean condition, int count) {
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if (!condition) {
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throw new RuntimeException("Synchronization count was " + count);
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}
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}
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static class FatalTest {
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public static void main(String[] args) throws Exception {
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initTestObjects();
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synchronized (testObjects.get(Integer.valueOf(args[0]))) {
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throw new RuntimeException("synchronization on value based class did not fail");
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}
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}
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}
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static class LogTest implements Runnable {
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private static long sharedCounter = 0L;
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private static Float sharedLock1 = 0.0f;
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public static void main(String[] args) throws Exception {
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initTestObjects();
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for (Object obj : testObjects) {
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synchronized (obj) {
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sharedCounter++;
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}
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}
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LogTest test = new LogTest();
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Thread[] threads = new Thread[THREAD_COUNT];
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for (int i = 0; i < threads.length; i++) {
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threads[i] = new Thread(test);
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threads[i].start();
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}
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for (Thread t : threads) {
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t.join();
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}
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}
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@Override
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public void run() {
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for (int i = 0; i < LOOP_COUNT; i++) {
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synchronized (sharedLock1) {
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sharedCounter++;
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}
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}
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}
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}
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// Very basic sanity tests to show things work for virtual threads too.
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private static void virtualThreadTests() throws Exception {
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final String[] vtTest = { "-XX:+UnlockDiagnosticVMOptions", "-XX:-CreateCoredumpOnCrash",
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"", "SyncOnValueBasedClassTest$VTTest" };
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// Fatal test
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vtTest[2] = "-XX:DiagnoseSyncOnValueBasedClasses=1";
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ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(vtTest);
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OutputAnalyzer output = ProcessTools.executeProcess(pb);
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output.shouldContain("fatal error: Synchronizing on object");
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output.shouldNotContain("synchronization on value based class did not fail");
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output.shouldNotHaveExitValue(0);
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// Log test
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vtTest[2] = "-XX:DiagnoseSyncOnValueBasedClasses=2";
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pb = ProcessTools.createLimitedTestJavaProcessBuilder(vtTest);
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output = ProcessTools.executeProcess(pb);
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output.shouldHaveExitValue(0);
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output.shouldContain("Synchronizing on object");
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output.shouldContain("synchronization on value based class did not fail");
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}
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static class VTTest {
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public static void main(String[] args) throws Exception {
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var thread = Thread.ofVirtual().start(() -> {
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synchronized (Character.valueOf('H')) {
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System.out.println("synchronization on value based class did not fail");
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}
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});
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thread.join();
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}
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}
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}
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