changeset 6337:baf3131f2e4c

8040887: [TESTBUG] Remove test/runtime/6925573/SortMethodsTest.java Summary: Removed test/runtime/6925573/SortMethodsTest.java Reviewed-by: coleenp, rdurbin
author ctornqvi
date Fri, 18 Apr 2014 00:19:24 +0200
parents 43106b748d31
children 681564abbbbd
files test/runtime/6925573/SortMethodsTest.java
diffstat 1 files changed, 0 insertions(+), 190 deletions(-) [+]
line wrap: on
line diff
--- a/test/runtime/6925573/SortMethodsTest.java	Thu Apr 17 00:03:58 2014 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,190 +0,0 @@
-/*
- * Copyright (c) 2008, 2014, 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.
- *
- */
-
-import java.io.ByteArrayOutputStream;
-import java.io.IOException;
-import java.io.OutputStream;
-import java.io.PrintWriter;
-import java.io.StringWriter;
-
-import java.lang.reflect.Method;
-import java.net.URI;
-import java.util.Arrays;
-import java.util.Vector;
-
-import javax.tools.Diagnostic;
-import javax.tools.DiagnosticCollector;
-import javax.tools.FileObject;
-import javax.tools.ForwardingJavaFileManager;
-import javax.tools.JavaCompiler;
-import javax.tools.JavaCompiler.CompilationTask;
-import javax.tools.JavaFileManager;
-import javax.tools.JavaFileObject;
-import javax.tools.JavaFileObject.Kind;
-import javax.tools.SimpleJavaFileObject;
-import javax.tools.StandardJavaFileManager;
-import javax.tools.ToolProvider;
-
-/*
- * @test SortMethodsTest
- * @bug 6925573
- * @summary verify that class loading does not need quadratic time with regard to the number of class
-methods.
- * @run main SortMethodsTest
- * @author volker.simonis@gmail.com
-*/
-
-public class SortMethodsTest {
-
-  static String createClass(String name, int nrOfMethods) {
-    StringWriter sw = new StringWriter();
-    PrintWriter pw = new PrintWriter(sw);
-    pw.println("public class " + name + "{");
-    for (int i = 0; i < nrOfMethods; i++) {
-      pw.println("  public void m" + i + "() {}");
-    }
-    pw.println("  public static String sayHello() {");
-    pw.println("    return \"Hello from class \" + " + name +
-               ".class.getName() + \" with \" + " + name +
-               ".class.getDeclaredMethods().length + \" methods\";");
-    pw.println("  }");
-    pw.println("}");
-    pw.close();
-    return sw.toString();
-  }
-
-  public static void main(String args[]) {
-
-    JavaCompiler comp = ToolProvider.getSystemJavaCompiler();
-    DiagnosticCollector<JavaFileObject> diags = new DiagnosticCollector<JavaFileObject>();
-    final String cName = new String("ManyMethodsClass");
-    Vector<Long> results = new Vector<Long>();
-
-    for (int i = 6; i < 60000; i*=10) {
-      String klass =  createClass(cName, i);
-      JavaMemoryFileObject file = new JavaMemoryFileObject(cName, klass);
-      MemoryFileManager mfm = new MemoryFileManager(comp.getStandardFileManager(diags, null, null), file);
-      CompilationTask task = comp.getTask(null, mfm, diags, null, null, Arrays.asList(file));
-
-      if (task.call()) {
-        try {
-          MemoryClassLoader mcl = new MemoryClassLoader(file);
-          long start = System.nanoTime();
-          Class<? extends Object> c = Class.forName(cName, true, mcl);
-          long end = System.nanoTime();
-          results.add(end - start);
-          Method m = c.getDeclaredMethod("sayHello", new Class[0]);
-          String ret = (String)m.invoke(null, new Object[0]);
-          System.out.println(ret + " (loaded and resloved in " + (end - start) + "ns)");
-        } catch (Exception e) {
-          System.err.println(e);
-        }
-      }
-      else {
-        System.out.println(klass);
-        System.out.println();
-        for (Diagnostic diag : diags.getDiagnostics()) {
-          System.out.println(diag.getCode() + "\n" + diag.getKind() + "\n" + diag.getPosition());
-          System.out.println(diag.getSource() + "\n" + diag.getMessage(null));
-        }
-      }
-    }
-
-    long lastRatio = 0;
-    for (int i = 2; i < results.size(); i++) {
-      long normalized1 = Math.max(results.get(i-1) - results.get(0), 1);
-      long normalized2 = Math.max(results.get(i) - results.get(0), 1);
-      long ratio = normalized2/normalized1;
-      lastRatio = ratio;
-      System.out.println("10 x more methods requires " + ratio + " x more time");
-    }
-    // The following is just vague estimation but seems to work on current x86_64 and sparcv9 machines
-    if (lastRatio > 60) {
-      throw new RuntimeException("ATTENTION: it seems that class loading needs quadratic time with regard to the number of class methods!!!");
-    }
-  }
-}
-
-class JavaMemoryFileObject extends SimpleJavaFileObject {
-
-  private final String code;
-  private ByteArrayOutputStream byteCode;
-
-  JavaMemoryFileObject(String name, String code) {
-    super(URI.create("string:///" + name.replace('.','/') + Kind.SOURCE.extension), Kind.SOURCE);
-    this.code = code;
-  }
-
-  @Override
-  public CharSequence getCharContent(boolean ignoreEncodingErrors) {
-    return code;
-  }
-
-  @Override
-  public OutputStream openOutputStream() {
-    byteCode = new ByteArrayOutputStream();
-    return byteCode;
-  }
-
-  byte[] getByteCode() {
-    return byteCode.toByteArray();
-   }
-}
-
-class MemoryClassLoader extends ClassLoader {
-
-  private final JavaMemoryFileObject jfo;
-
-  public MemoryClassLoader(JavaMemoryFileObject jfo) {
-    this.jfo = jfo;
-  }
-
-  public Class findClass(String name) {
-    byte[] b = jfo.getByteCode();
-    return defineClass(name, b, 0, b.length);
-  }
-}
-
-class MemoryFileManager extends ForwardingJavaFileManager<JavaFileManager> {
-
-  private final JavaFileObject jfo;
-
-  public MemoryFileManager(StandardJavaFileManager jfm, JavaFileObject jfo) {
-    super(jfm);
-    this.jfo = jfo;
-  }
-
-  @Override
-  public FileObject getFileForInput(Location location, String packageName,
-                                    String relativeName) throws IOException {
-    return jfo;
-  }
-
-  @Override
-  public JavaFileObject getJavaFileForOutput(Location location, String qualifiedName,
-                                             Kind kind, FileObject outputFile) throws IOException {
-    return jfo;
-  }
-
-}