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/*
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* Copyright (c) 2019, 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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import sun.hotspot.WhiteBox;
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/**
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* This is a generic test app for testing if classes are loaded from the CDS archive
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* or not (without having to parse -Xlog:class+load, or writing your own WhiteBox apps).
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* Usage:
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* [1] Create an archive with WhiteBox enabled.
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* [2] Run this app with arguments such as
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* "assertShared:java.lang.Object"
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* "assertNotShared:NotSharedClassName"
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*
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* We can probably add other kinds of simple tests as well ....
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*
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* FIXME: enhance WB API to check if a particular archive has failed. So you can say
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* assertShared:0,java.lang.Object
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* to assert that java.lang.Object is shared from archive #0 (i.e., base archive).
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*/
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public class GenericTestApp {
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private static final WhiteBox wb = WhiteBox.getWhiteBox();
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public static void main(String args[]) throws Exception {
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System.out.println("GenericTestApp started. WhiteBox = " + wb);
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System.out.println("cdsMemoryMappingFailed() = " + cdsMemoryMappingFailed());
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for (String s : args) {
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Class c;
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if ((c = getClass(s, "assertShared:")) != null) {
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assertShared(c);
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}
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else if ((c = getClass(s, "assertNotShared:")) != null) {
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assertNotShared(c);
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}
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else {
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throw new RuntimeException("Unknown option: " + s);
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}
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System.out.println("passed: " + s);
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}
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}
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private static Class getClass(String s, String prefix) throws Exception {
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if (s.startsWith(prefix)) {
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return Class.forName(s.substring(prefix.length()));
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} else {
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return null;
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}
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}
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private static boolean cdsMemoryMappingFailed() {
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return wb.cdsMemoryMappingFailed();
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}
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private static void assertShared(Class klass) {
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if (!cdsMemoryMappingFailed()) {
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if (!wb.isSharedClass(klass)) {
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throw new RuntimeException("Class should be shared but is not: " + klass);
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}
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} else {
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// FIXME -- need to throw jtreg.SkippedException
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System.out.println("Cannot test for wb.isSharedClass(" + klass + ") because CDS mapping has failed");
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}
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}
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private static void assertNotShared(Class klass) {
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if (wb.isSharedClass(klass)) {
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throw new RuntimeException("Class should be shared but is not: " + klass);
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}
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}
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}
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