143 lines
4.6 KiB
Java
143 lines
4.6 KiB
Java
/*
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* Copyright (c) 2021, 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 java.net.URL;
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import java.net.URLClassLoader;
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import java.lang.reflect.Field;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.lib.process.ProcessTools;
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/*
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* @test
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* @bug 8276036 8277213 8277441
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* @summary test for the value of full_count in the message of insufficient codecache
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* @requires vm.compMode != "Xint"
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* @library /test/lib
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*/
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public class CodeCacheFullCountTest {
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public static void main(String args[]) throws Throwable {
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if (args.length == 1) {
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wasteCodeCache();
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} else {
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runTest();
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}
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}
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public static void wasteCodeCache() throws Throwable {
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URL url = CodeCacheFullCountTest.class.getProtectionDomain().getCodeSource().getLocation();
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try {
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for (int i = 0; i < 500; i++) {
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ClassLoader cl = new MyClassLoader(url);
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refClass(cl.loadClass("SomeClass"));
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}
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} catch (Throwable t) {
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// Expose the root cause of the Throwable instance.
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while (t.getCause() != null) {
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t = t.getCause();
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}
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throw t;
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}
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}
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public static void runTest() throws Throwable {
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ProcessBuilder pb = ProcessTools.createTestJavaProcessBuilder(
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"-XX:ReservedCodeCacheSize=2496k", "-XX:-UseCodeCacheFlushing", "-XX:-MethodFlushing", "CodeCacheFullCountTest", "WasteCodeCache");
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OutputAnalyzer oa = ProcessTools.executeProcess(pb);
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// Ignore adapter creation failures
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if (oa.getExitValue() != 0 && !oa.getOutput().contains("Out of space in CodeCache")) {
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oa.reportDiagnosticSummary();
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throw new RuntimeException("VM finished with exit code " + oa.getExitValue());
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}
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String stdout = oa.getStdout();
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Pattern pattern = Pattern.compile("full_count=(\\d)");
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Matcher stdoutMatcher = pattern.matcher(stdout);
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if (stdoutMatcher.find()) {
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int fullCount = Integer.parseInt(stdoutMatcher.group(1));
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if (fullCount == 0) {
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throw new RuntimeException("the value of full_count is wrong.");
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}
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} else {
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throw new RuntimeException("codecache shortage did not occur.");
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}
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}
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private static void refClass(Class clazz) throws Exception {
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Field name = clazz.getDeclaredField("NAME");
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name.setAccessible(true);
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name.get(null);
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}
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private static class MyClassLoader extends URLClassLoader {
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public MyClassLoader(URL url) {
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super(new URL[]{url}, null);
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}
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protected Class<?> loadClass(String name, boolean resolve) throws ClassNotFoundException {
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try {
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return super.loadClass(name, resolve);
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} catch (ClassNotFoundException e) {
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return Class.forName(name, resolve, CodeCacheFullCountTest.class.getClassLoader());
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}
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}
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}
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}
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abstract class Foo {
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public abstract int foo();
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}
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class Foo1 extends Foo {
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private int a;
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public int foo() { return a; }
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}
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class Foo2 extends Foo {
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private int a;
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public int foo() { return a; }
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}
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class Foo3 extends Foo {
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private int a;
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public int foo() { return a; }
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}
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class Foo4 extends Foo {
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private int a;
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public int foo() { return a; }
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}
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class SomeClass {
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static final String NAME = "name";
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static {
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int res =0;
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Foo[] foos = new Foo[] { new Foo1(), new Foo2(), new Foo3(), new Foo4() };
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for (int i = 0; i < 100000; i++) {
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res = foos[i % foos.length].foo();
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}
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}
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}
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