90 lines
3.0 KiB
Java
90 lines
3.0 KiB
Java
/*
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* Copyright (c) 2018, 2023, 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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*/
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import java.io.File;
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import java.net.URL;
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import jdk.test.whitebox.WhiteBox;
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//
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// - Test static final String field with initial value in cached mirror should be also archived.
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// - GC should not crash when reference fields in cached mirror are updated at runtime
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// - Reference fields are updated to point to runtime created objects
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// - Reference fields are nullified
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//
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public class MirrorWithReferenceFieldsApp {
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// Static String field with initial value
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static final String archived_field = "abc";
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// Static object field
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static Object non_archived_field_1;
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// Instance field
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Integer non_archived_field_2;
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public MirrorWithReferenceFieldsApp() {
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non_archived_field_1 = new Object();
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non_archived_field_2 = Integer.valueOf(1);
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}
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public static void main(String args[]) throws Exception {
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WhiteBox wb = WhiteBox.getWhiteBox();
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if (!wb.areOpenArchiveHeapObjectsMapped()) {
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System.out.println("Archived open_archive_heap objects are not mapped.");
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System.out.println("This may happen during normal operation. Test Skipped.");
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return;
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}
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MirrorWithReferenceFieldsApp m = new MirrorWithReferenceFieldsApp();
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m.test(wb);
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}
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public void test(WhiteBox wb) {
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Class c = MirrorWithReferenceFieldsApp.class;
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if (wb.isSharedClass(c)) {
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if (wb.isSharedInternedString(archived_field)) {
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System.out.println("archived_field is archived as excepted");
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} else {
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throw new RuntimeException(
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"FAILED. archived_field is not archived.");
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}
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// GC should not crash
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System.gc();
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System.gc();
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System.gc();
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non_archived_field_1 = null;
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non_archived_field_2 = null;
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System.gc();
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System.gc();
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System.gc();
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System.out.println("Done.");
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}
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}
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}
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