test/hotspot/jtreg/runtime/cds/appcds/cacheObject/MirrorWithReferenceFieldsApp.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/runtime/cds/appcds/cacheObject/MirrorWithReferenceFieldsApp.java Mon Jul 29 10:34:20 2019 -0400
@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2018, 2019, 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.File;
+import java.net.URL;
+import sun.hotspot.WhiteBox;
+
+//
+// - Test static final String field with initial value in cached mirror should be also archived.
+// - GC should not crash when reference fields in cached mirror are updated at runtime
+// - Reference fields are updated to point to runtime created objects
+// - Reference fields are nullified
+//
+public class MirrorWithReferenceFieldsApp {
+
+ // Static String field with initial value
+ static final String archived_field = "abc";
+
+ // Static object field
+ static Object non_archived_field_1;
+
+ // Instance field
+ Integer non_archived_field_2;
+
+ public MirrorWithReferenceFieldsApp() {
+ non_archived_field_1 = new Object();
+ non_archived_field_2 = new Integer(1);
+ }
+
+ public static void main(String args[]) throws Exception {
+ WhiteBox wb = WhiteBox.getWhiteBox();
+
+ if (!wb.areOpenArchiveHeapObjectsMapped()) {
+ System.out.println("Archived open_archive_heap objects are not mapped.");
+ System.out.println("This may happen during normal operation. Test Skipped.");
+ return;
+ }
+
+ MirrorWithReferenceFieldsApp m = new MirrorWithReferenceFieldsApp();
+ m.test(wb);
+ }
+
+ public void test(WhiteBox wb) {
+ Class c = MirrorWithReferenceFieldsApp.class;
+ if (wb.isSharedClass(c)) {
+ // Check if the Class object is cached
+ if (wb.isShared(c)) {
+ System.out.println(c + " mirror is cached. Expected.");
+ } else {
+ throw new RuntimeException(
+ "FAILED. " + c + " mirror should be cached.");
+ }
+
+ // Check fields
+
+ if (wb.isShared(archived_field)) {
+ System.out.println("archived_field is archived as excepted");
+ } else {
+ throw new RuntimeException(
+ "FAILED. archived_field is not archived.");
+ }
+
+ // GC should not crash
+ System.gc();
+ System.gc();
+ System.gc();
+
+ non_archived_field_1 = null;
+ non_archived_field_2 = null;
+
+ System.gc();
+ System.gc();
+ System.gc();
+
+ System.out.println("Done.");
+ }
+ }
+}