| /* |
| * Copyright (c) 2014, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @summary Test of diagnostic command VM.classloader_stats |
| * @library /test/lib |
| * @modules java.base/jdk.internal.misc |
| * java.compiler |
| * java.management |
| * jdk.internal.jvmstat/sun.jvmstat.monitor |
| * @run testng ClassLoaderStatsTest |
| */ |
| |
| import org.testng.annotations.Test; |
| import org.testng.Assert; |
| |
| import jdk.test.lib.process.OutputAnalyzer; |
| import jdk.test.lib.dcmd.CommandExecutor; |
| import jdk.test.lib.dcmd.JMXExecutor; |
| |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.nio.channels.FileChannel; |
| import java.util.Iterator; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| public class ClassLoaderStatsTest { |
| |
| // ClassLoader Parent CLD* Classes ChunkSz BlockSz Type |
| // 0x00000007c0215928 0x0000000000000000 0x0000000000000000 0 0 0 org.eclipse.osgi.baseadaptor.BaseAdaptor$1 |
| // 0x00000007c0009868 0x0000000000000000 0x00007fc52aebcc80 1 6144 3768 sun.reflect.DelegatingClassLoader |
| // 0x00000007c0009868 0x0000000000000000 0x00007fc52b8916d0 1 6144 3688 sun.reflect.DelegatingClassLoader |
| // 0x00000007c0009868 0x00000007c0038ba8 0x00007fc52afb8760 1 6144 3688 sun.reflect.DelegatingClassLoader |
| // 0x00000007c0009868 0x0000000000000000 0x00007fc52afbb1a0 1 6144 3688 sun.reflect.DelegatingClassLoader |
| // 0x0000000000000000 0x0000000000000000 0x00007fc523416070 5019 30060544 29956216 <boot classloader> |
| // 455 1210368 672848 + unsafe anonymous classes |
| // 0x00000007c016b5c8 0x00000007c0038ba8 0x00007fc52a995000 5 8192 5864 org.netbeans.StandardModule$OneModuleClassLoader |
| // 0x00000007c0009868 0x00000007c016b5c8 0x00007fc52ac13640 1 6144 3896 sun.reflect.DelegatingClassLoader |
| // ... |
| |
| static Pattern clLine = Pattern.compile("0x\\p{XDigit}*\\s*0x\\p{XDigit}*\\s*0x\\p{XDigit}*\\s*(\\d*)\\s*(\\d*)\\s*(\\d*)\\s*(.*)"); |
| static Pattern anonLine = Pattern.compile("\\s*(\\d*)\\s*(\\d*)\\s*(\\d*)\\s*.*"); |
| |
| public static DummyClassLoader dummyloader; |
| |
| public void run(CommandExecutor executor) throws ClassNotFoundException { |
| |
| // create a classloader and load our special class |
| dummyloader = new DummyClassLoader(); |
| Class<?> c = Class.forName("TestClass", true, dummyloader); |
| if (c.getClassLoader() != dummyloader) { |
| Assert.fail("TestClass defined by wrong classloader: " + c.getClassLoader()); |
| } |
| |
| OutputAnalyzer output = executor.execute("VM.classloader_stats"); |
| Iterator<String> lines = output.asLines().iterator(); |
| while (lines.hasNext()) { |
| String line = lines.next(); |
| Matcher m = clLine.matcher(line); |
| if (m.matches()) { |
| // verify that DummyClassLoader has loaded 1 class and 1 anonymous class |
| if (m.group(4).equals("ClassLoaderStatsTest$DummyClassLoader")) { |
| System.out.println("line: " + line); |
| if (!m.group(1).equals("1")) { |
| Assert.fail("Should have loaded 1 class: " + line); |
| } |
| checkPositiveInt(m.group(2)); |
| checkPositiveInt(m.group(3)); |
| |
| String next = lines.next(); |
| System.out.println("next: " + next); |
| Matcher m1 = anonLine.matcher(next); |
| m1.matches(); |
| if (!m1.group(1).equals("1")) { |
| Assert.fail("Should have loaded 1 anonymous class, but found : " + m1.group(1)); |
| } |
| checkPositiveInt(m1.group(2)); |
| checkPositiveInt(m1.group(3)); |
| } |
| } |
| } |
| } |
| |
| private static void checkPositiveInt(String s) { |
| if (Integer.parseInt(s) <= 0) { |
| Assert.fail("Value should have been > 0: " + s); |
| } |
| } |
| |
| public static class DummyClassLoader extends ClassLoader { |
| |
| public static final String CLASS_NAME = "TestClass"; |
| |
| static ByteBuffer readClassFile(String name) |
| { |
| File f = new File(System.getProperty("test.classes", "."), |
| name); |
| try (FileInputStream fin = new FileInputStream(f); |
| FileChannel fc = fin.getChannel()) |
| { |
| return fc.map(FileChannel.MapMode.READ_ONLY, 0, fc.size()); |
| } catch (IOException e) { |
| Assert.fail("Can't open file: " + name, e); |
| } |
| |
| /* Will not reach here as Assert.fail() throws exception */ |
| return null; |
| } |
| |
| protected Class<?> loadClass(String name, boolean resolve) |
| throws ClassNotFoundException |
| { |
| Class<?> c; |
| if (!"TestClass".equals(name)) { |
| c = super.loadClass(name, resolve); |
| } else { |
| // should not delegate to the system class loader |
| c = findClass(name); |
| if (resolve) { |
| resolveClass(c); |
| } |
| } |
| return c; |
| } |
| |
| protected Class<?> findClass(String name) |
| throws ClassNotFoundException |
| { |
| if (!"TestClass".equals(name)) { |
| throw new ClassNotFoundException("Unexpected class: " + name); |
| } |
| return defineClass(name, readClassFile(name + ".class"), null); |
| } |
| } /* DummyClassLoader */ |
| |
| @Test |
| public void jmx() throws ClassNotFoundException { |
| run(new JMXExecutor()); |
| } |
| } |
| |
| class TestClass { |
| static { |
| // force creation of anonymous class (for the lambdaform) |
| Runnable r = () -> System.out.println("Hello"); |
| r.run(); |
| } |
| } |