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/*
* Copyright (c) 2017, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
import java.io.*;
import java.util.*;
import sun.hotspot.WhiteBox;
// All strings in archived classes are shared
public class GCStressApp {
static WhiteBox wb = WhiteBox.getWhiteBox();
static int[] arr;
static String get_shared_string() {
String shared_str = "GCStressApp_shared_string";
return shared_str;
}
static String get_shared_string1() {
String shared_str1 = "GCStressApp_shared_string1";
return shared_str1;
}
static void allocAlot() {
try {
Random random = new Random();
for (int i = 0; i < 1024 * 1024; i++) {
int len = random.nextInt(10000);
arr = new int[len];
}
} catch (java.lang.OutOfMemoryError e) { }
}
static void runGC() {
wb.fullGC();
}
public static void main(String args[]) throws Exception {
if (!wb.isSharedClass(GCStressApp.class)) {
System.out.println("GCStressApp is not shared. Possibly there was a mapping failure.");
return;
}
if (wb.areSharedStringsIgnored()) {
System.out.println("Shared strings are ignored.");
return;
}
Object refs = wb.getResolvedReferences(GCStressApp.class);
if (wb.isShared(refs)) {
String shared_str = get_shared_string();
String shared_str1 = get_shared_string1();
if (!wb.isShared(shared_str)) {
throw new RuntimeException("FAILED. GCStressApp_shared_string is not shared");
}
if (!wb.isShared(shared_str1)) {
throw new RuntimeException("FAILED. GCStressApp_shared_string1 is not shared");
}
allocAlot();
runGC();
runGC();
runGC();
System.out.println("Passed");
} else {
System.out.println(
"No cached resolved references. Open archive heap data is not used.");
}
}
}
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