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/*
* Copyright (c) 2015, 2016, 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
* @bug 8046246
* @summary Tests and benchmarks the JVMTI RedefineClasses when a
* single class (and its parent) contains many methods.
*
* @modules jdk.compiler
* java.instrument
* jdk.zipfs
* @run build ManyMethodsBenchmarkApp ManyMethodsBenchmarkAgent
* @run shell MakeJAR3.sh ManyMethodsBenchmarkAgent 'Can-Retransform-Classes: true'
* @run main/othervm -javaagent:ManyMethodsBenchmarkAgent.jar ManyMethodsBenchmarkApp
*/
import java.lang.instrument.*;
public class ManyMethodsBenchmarkAgent
{
public static boolean fail = false;
public static boolean completed = false;
private static Instrumentation instrumentation;
public static void
premain( String agentArgs,
Instrumentation instrumentation) {
System.out.println("ManyMethodsBenchmarkAgent started");
ManyMethodsBenchmarkAgent.instrumentation = instrumentation;
System.out.println("ManyMethodsBenchmarkAgent finished");
}
static void instr() {
System.out.println("ManyMethodsBenchmarkAgent.instr started");
Class[] allClasses = instrumentation.getAllLoadedClasses();
for (int i = 0; i < allClasses.length; i++) {
Class klass = allClasses[i];
String name = klass.getName();
if (!name.equals("Base")) {
continue;
}
System.err.println("Instrumenting the class: " + klass);
try {
instrumentation.retransformClasses(klass);
} catch (Throwable e) {
System.err.println("Error: bad return from retransform: " + klass);
System.err.println(" ERROR: " + e);
fail = true;
}
}
completed = true;
System.out.println("ManyMethodsBenchmarkAgent.instr finished");
}
}
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