0N/A/*
2362N/A * Copyright (c) 2003, 2008, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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0N/A * This code is free software; you can redistribute it and/or modify it
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0N/A * published by the Free Software Foundation.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
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0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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0N/A */
0N/A
0N/A/*
0N/A * @test
0N/A * @bug 4858522
0N/A * @summary Basic unit test of HotspotClassLoadingMBean.getClassInitializationTime()
0N/A * @author Steve Bohne
0N/A */
0N/A
0N/A/*
0N/A * This test is just a sanity check and does not check for the correct value.
0N/A */
0N/A
0N/Aimport sun.management.*;
0N/A
0N/Apublic class GetClassInitializationTime {
0N/A
0N/A private static HotspotClassLoadingMBean mbean =
0N/A (HotspotClassLoadingMBean)ManagementFactoryHelper.getHotspotClassLoadingMBean();
0N/A
0N/A // Careful with these values.
0N/A private static final long MIN_TIME_FOR_PASS = 1;
0N/A private static final long MAX_TIME_FOR_PASS = Long.MAX_VALUE;
0N/A
0N/A private static boolean trace = false;
0N/A
0N/A public static void main(String args[]) throws Exception {
0N/A if (args.length > 0 && args[0].equals("trace")) {
0N/A trace = true;
0N/A }
0N/A
0N/A long time = mbean.getClassInitializationTime();
0N/A
0N/A if (trace) {
0N/A System.out.println("Class initialization time (ms): " + time);
0N/A }
0N/A
0N/A if (time < MIN_TIME_FOR_PASS || time > MAX_TIME_FOR_PASS) {
0N/A throw new RuntimeException("Class initialization time " +
0N/A "illegal value: " + time + " ms " +
0N/A "(MIN = " + MIN_TIME_FOR_PASS + "; " +
0N/A "MAX = " + MAX_TIME_FOR_PASS + ")");
0N/A }
0N/A
0N/A // Load a class and make sure the time increases
0N/A Class.forName("ClassToInitialize");
0N/A
0N/A long time2 = mbean.getClassInitializationTime();
0N/A
0N/A if (trace) {
0N/A System.out.println("Class initialization time2 (ms): " + time2);
0N/A }
0N/A
0N/A if (time2 <= time) {
0N/A throw new RuntimeException("Class initialization time " +
0N/A "did not increase when class loaded " +
0N/A "(time = " + time + "; " +
0N/A "time2 = " + time2 + ")");
0N/A }
0N/A
0N/A System.out.println("Test passed.");
0N/A }
0N/A}
0N/A
0N/A// This class should just cause the initialization timer to run
0N/Aclass ClassToInitialize {
0N/A static {
0N/A try {
0N/A Thread.sleep(1000);
0N/A } catch (InterruptedException ie) {
0N/A // do nothing
0N/A }
0N/A }
0N/A}