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