42 lines
1.7 KiB
Java
42 lines
1.7 KiB
Java
/*
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* Copyright (c) 2017, 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.lang.instrument.Instrumentation;
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public class Main {
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public static void main(String[] args) throws Exception {
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Instrumentation inst = Agent.inst;
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if (inst == null)
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throw new RuntimeException("Agent not loaded");
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// check boot class path has been extended
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Class<?> helper = Class.forName("AgentHelper");
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if (helper.getClassLoader() != null)
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throw new RuntimeException("AgentHelper not loaded by boot loader");
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// check Instrumentation object can be used
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Class<?>[] classes = inst.getAllLoadedClasses();
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System.out.println(classes.length + " classes loaded");
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}
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}
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