73 lines
2.2 KiB
Java
73 lines
2.2 KiB
Java
/*
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* Copyright (c) 2003, 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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/*
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* Copyright 2003 Wily Technology, Inc.
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*/
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/**
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* A JPLIS agent that makes the Instrumentation available via a static accessor.
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* Used so that unit test frameworks that run as apps can exercise the Instrumentation--
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* configure this guy as a JPLIS agent, then call the Instrumentation fetcher from the test case.
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*
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*/
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public class InstrumentationHandoff
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{
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private static Instrumentation sInstrumentation;
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// disallow construction
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private
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InstrumentationHandoff()
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{
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}
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public static void
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premain(String options, Instrumentation inst)
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{
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System.out.println("InstrumentationHandoff JPLIS agent initialized");
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sInstrumentation = inst;
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}
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// may return null
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public static Instrumentation
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getInstrumentation()
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{
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return sInstrumentation;
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}
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public static Instrumentation
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getInstrumentationOrThrow()
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{
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Instrumentation result = getInstrumentation();
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if ( result == null )
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{
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throw new NullPointerException("instrumentation instance not initialized");
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}
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return result;
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}
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}
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