96 lines
3.3 KiB
Java
96 lines
3.3 KiB
Java
|
/*
|
||
|
|
* Copyright 2003 Sun Microsystems, Inc. All Rights Reserved.
|
||
|
|
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
||
|
|
*
|
||
|
|
* This code is free software; you can redistribute it and/or modify it
|
||
|
|
* under the terms of the GNU General Public License version 2 only, as
|
||
|
|
* published by the Free Software Foundation.
|
||
|
|
*
|
||
|
|
* This code is distributed in the hope that it will be useful, but WITHOUT
|
||
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
||
|
|
* version 2 for more details (a copy is included in the LICENSE file that
|
||
|
|
* accompanied this code).
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License version
|
||
|
|
* 2 along with this work; if not, write to the Free Software Foundation,
|
||
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
||
|
|
*
|
||
|
|
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
||
|
|
* CA 95054 USA or visit www.sun.com if you need additional information or
|
||
|
|
* have any questions.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* @test
|
||
|
|
* @bug 4858522
|
||
|
|
* @summary Basic unit test of HotspotClassLoadingMBean.getInitializedClassCount()
|
||
|
|
* @author Steve Bohne
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This test is just a sanity check and does not check for the correct value.
|
||
|
|
*/
|
||
|
|
|
||
|
|
import sun.management.*;
|
||
|
|
|
||
|
|
public class GetInitializedClassCount {
|
||
|
|
|
||
|
|
private static HotspotClassLoadingMBean mbean =
|
||
|
|
(HotspotClassLoadingMBean)ManagementFactory.getHotspotClassLoadingMBean();
|
||
|
|
|
||
|
|
// Careful with these values.
|
||
|
|
private static final long MIN_VALUE_FOR_PASS = 1;
|
||
|
|
private static final long MAX_VALUE_FOR_PASS = Long.MAX_VALUE;
|
||
|
|
|
||
|
|
private static boolean trace = false;
|
||
|
|
|
||
|
|
public static void main(String args[]) throws Exception {
|
||
|
|
if (args.length > 0 && args[0].equals("trace")) {
|
||
|
|
trace = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
long value = mbean.getInitializedClassCount();
|
||
|
|
|
||
|
|
if (trace) {
|
||
|
|
System.out.println("Initialized class count: " + value);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (value < MIN_VALUE_FOR_PASS || value > MAX_VALUE_FOR_PASS) {
|
||
|
|
throw new RuntimeException("Initialized class count " +
|
||
|
|
"illegal value: " + value + " " +
|
||
|
|
"(MIN = " + MIN_VALUE_FOR_PASS + "; " +
|
||
|
|
"MAX = " + MAX_VALUE_FOR_PASS + ")");
|
||
|
|
}
|
||
|
|
|
||
|
|
// Initialize a class
|
||
|
|
Class.forName("ClassToInitialize0");
|
||
|
|
|
||
|
|
long value2 = mbean.getInitializedClassCount();
|
||
|
|
|
||
|
|
if (trace) {
|
||
|
|
System.out.println("Initialized class count2: " + value2);
|
||
|
|
}
|
||
|
|
|
||
|
|
// If new count does not reflect that at least one class has
|
||
|
|
// been initialized, throw an exception. We don't check that
|
||
|
|
// _exactly_ one class has been initialized because another
|
||
|
|
// thread may (rarely) have also done some class initialization.
|
||
|
|
if (value2 < value + 1) {
|
||
|
|
throw new RuntimeException("Initialized class count " +
|
||
|
|
"did not increase " +
|
||
|
|
"(value = " + value + "; " +
|
||
|
|
"value2 = " + value2 + ")");
|
||
|
|
}
|
||
|
|
|
||
|
|
System.out.println("Test passed.");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
class ClassToInitialize0 {
|
||
|
|
static int i = 0;
|
||
|
|
static {
|
||
|
|
i = 1;
|
||
|
|
}
|
||
|
|
}
|