--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/runtime/cds/appcds/cacheObject/CheckCachedMirrorApp.java Mon Jul 29 10:34:20 2019 -0400
@@ -0,0 +1,92 @@
+/*
+ * 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 java.net.URLClassLoader;
+import sun.hotspot.WhiteBox;
+
+//
+// Test class mirror objects are cached when open archive heap objects are mapped:
+// - Well-known shared library classes:
+// java.lang.Object
+// java.lang.String
+// - Shared application class loaded by the system class loader
+// - Shared application class loaded user defined class loader
+//
+public class CheckCachedMirrorApp {
+ static WhiteBox wb;
+ public static void main(String args[]) throws Exception {
+ String path = args[0];
+ URL url = new File(path).toURI().toURL();
+ URL[] urls = new URL[] {url};
+
+ URLClassLoader loader = new URLClassLoader(urls);
+ Class hello = loader.loadClass("Hello");
+ System.out.println("Loaded " + hello + " from " + url + " using loader " + loader);
+
+ 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;
+ }
+
+ // Well-known shared library classes
+ Class object_class = Object.class;
+ checkMirror(object_class, true);
+ Class string_class = String.class;
+ checkMirror(string_class, true);
+
+ // Shared app class
+ Class app_class = CheckCachedMirrorApp.class;
+ checkMirror(app_class, true);
+
+ // Hello is shared class and loaded by the 'loader' defined in current app.
+ // It should not have cached resolved_references.
+ Class class_with_user_defined_loader = hello;
+ checkMirror(class_with_user_defined_loader, false);
+ }
+
+ static void checkMirror(Class c, boolean mirrorShouldBeArchived) {
+ System.out.print("Check cached mirror for " + c);
+ if (wb.isSharedClass(c)) {
+ // Check if the Class object is cached
+ if (mirrorShouldBeArchived && wb.isShared(c)) {
+ System.out.println(c + " mirror is cached. Expected.");
+ } else if (!mirrorShouldBeArchived && !wb.isShared(c)) {
+ System.out.println(c + " mirror is not cached. Expected.");
+ } else if (mirrorShouldBeArchived && !wb.isShared(c)) {
+ throw new RuntimeException(
+ "FAILED. " + c + " mirror is not cached.");
+ } else {
+ throw new RuntimeException(
+ "FAILED. " + c + " mirror should not be cached.");
+ }
+ } else {
+ System.out.println("Class " + c + "is not shared, skipping the check for mirror");
+ }
+ }
+}