124 lines
4.3 KiB
Java
124 lines
4.3 KiB
Java
/*
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* Copyright (c) 2003, 2018, 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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package nsk.jvmti.CompiledMethodUnload;
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import java.io.*;
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import java.math.*;
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import java.util.*;
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import nsk.share.*;
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import nsk.share.jvmti.*;
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/**
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* This test exercises the JVMTI event <code>CompiledMethodUnload</code>.
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* <br>It creates an instance of tested class 'HotClass'. Then special
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* 'hot' methods are called in a loop in order to be compiled/inlined.
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* Then the class is provoked to be unloaded and, thus, CompiledMethodUnload
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* events generation for the compiled methods mentioned above.<br>
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* The CompiledMethodUnload events, if they occur, must be sent only
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* during the live phase of the VM execution.
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*/
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public class compmethunload001 {
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/**
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* class signature to be loaded and then unloaded
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*/
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private final static String CLS_TO_BE_UNLOADED =
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"nsk.jvmti.CompiledMethodUnload.compmethunload001u";
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private final static int MAX_ITERATIONS = 5;
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static {
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try {
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System.loadLibrary("compmethunload001");
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} catch (UnsatisfiedLinkError ule) {
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System.err.println("Could not load \"compmethunload001\" library");
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System.err.println("java.library.path:"
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+ System.getProperty("java.library.path"));
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throw ule;
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}
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}
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native int check();
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native int unloaded();
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public static void main(String[] argv) throws Exception {
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argv = nsk.share.jvmti.JVMTITest.commonInit(argv);
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// produce JCK-like exit status
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System.exit(run(argv, System.out) + Consts.JCK_STATUS_BASE);
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}
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public static int run(String argv[], PrintStream out) throws Exception {
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return new compmethunload001().runThis(argv, out);
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}
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public static void callHotClass(String location) throws Exception {
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String clsDir = location + File.separator + "loadclass";
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ClassUnloader clsUnLoader = new ClassUnloader();
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// load the class
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System.out.println("\nTrying to load class from "
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+ clsDir + " ...");
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clsUnLoader.loadClass(CLS_TO_BE_UNLOADED, clsDir);
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Class<?> c = clsUnLoader.getLoadedClass();
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Object hotCls = c.newInstance();
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// Call hot methods that get compiled
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c.getMethod("entryMethod").invoke(hotCls);
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c.getMethod("entryNewMethod").invoke(hotCls);
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// provoke unloading of previously compiled methods
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hotCls = null;
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c = null;
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boolean clsUnloaded = clsUnLoader.unloadClass();
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clsUnLoader = null;
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System.gc();
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}
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private int runThis(String argv[], PrintStream out) throws Exception {
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ArgumentHandler argHandler = new ArgumentHandler(argv);
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String args[] = argHandler.getArguments();
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if (args.length < 1)
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throw new Failure("TEST BUG: path for class to be loaded is not specified");
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callHotClass(args[0]);
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// Wait until something is unloaded
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int num = unloaded();
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int iter = 0;
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while (num == 0) {
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System.gc();
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num = unloaded();
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iter++;
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if (iter > MAX_ITERATIONS) {
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throw new Failure("PRODUCT BUG: class was not unloaded in " + MAX_ITERATIONS);
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}
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}
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System.out.println("Number of unloaded events " + num + " number of iterations " + iter);
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return check();
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}
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}
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