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Java > Open Source Codes > org > springframework > instrument > InstrumentationSavingAgent


1 /*
2  * Copyright 2002-2006 the original author or authors.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16
17 package org.springframework.instrument;
18
19 import java.lang.instrument.Instrumentation JavaDoc;
20
21 /**
22  * Java agent that saves the Instrumentation interface
23  * from the JVM for later use.
24  *
25  * @author Rod Johnson
26  * @since 2.0
27  * @see org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver
28  */
29 public class InstrumentationSavingAgent {
30     
31     private static Instrumentation JavaDoc instrumentation;
32
33
34     /**
35      * Save the Instrumentation interface exposed by the JVM.
36      */
37     public static void premain(String JavaDoc agentArgs, Instrumentation JavaDoc inst) {
38         instrumentation = inst;
39     }
40
41
42     /**
43      * Return the Instrumentation interface exposed by the JVM.
44      */
45     public static Instrumentation JavaDoc getInstrumentation() {
46         return instrumentation;
47     }
48
49 }
50
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