test/hotspot/jtreg/runtime/cds/appcds/FieldLayoutFlags.java
changeset 58978 ad157fab6bf5
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/runtime/cds/appcds/FieldLayoutFlags.java	Thu Nov 07 16:26:57 2019 -0800
@@ -0,0 +1,127 @@
+/*
+ * Copyright (c) 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.
+ *
+ */
+
+/*
+ * @test
+ * @summary VM should work even if different field layout options are chosen between dump time and run time.
+ * @bug 8233086
+ * @requires vm.cds
+ * @modules java.base/jdk.internal.misc
+ * @modules java.base/jdk.internal.vm.annotation
+ * @library /test/lib /test/hotspot/jtreg/runtime/cds/appcds /test/hotspot/jtreg/runtime/cds/appcds/test-classes
+ * @build FieldLayoutApp
+ * @run driver ClassFileInstaller -jar field_layout.jar
+ *     FieldLayoutApp
+ *     FieldLayoutApp$TestObject
+ *     FieldLayoutApp$Base1
+ *     FieldLayoutApp$Base2
+ *     FieldLayoutApp$Child1
+ *     FieldLayoutApp$Child2
+ * @run driver FieldLayoutFlags
+ */
+
+import jdk.test.lib.Platform;
+
+public class FieldLayoutFlags {
+    static final String[][] flags = {
+        // Dump time                             // Run time
+        {},                                      {},   // All defaults. Ensure that the test itself is correct.
+        {"-XX:FieldsAllocationStyle=0"},         {"-XX:FieldsAllocationStyle=1"},
+        {"-XX:FieldsAllocationStyle=0"},         {"-XX:FieldsAllocationStyle=2"},
+        {"-XX:FieldsAllocationStyle=1"},         {"-XX:FieldsAllocationStyle=0"},
+        {"-XX:FieldsAllocationStyle=1"},         {"-XX:FieldsAllocationStyle=2"},
+        {"-XX:FieldsAllocationStyle=2"},         {"-XX:FieldsAllocationStyle=0"},
+        {"-XX:FieldsAllocationStyle=2"},         {"-XX:FieldsAllocationStyle=1"},
+
+        {"-XX:+CompactFields"},                  {"-XX:-CompactFields"},
+        {"-XX:-CompactFields"},                  {"-XX:+CompactFields"},
+
+        {"-XX:+EnableContended"},                {"-XX:-EnableContended"},
+        {"-XX:-EnableContended"},                {"-XX:+EnableContended"},
+
+        {"-XX:ContendedPaddingWidth=128"},       {"-XX:ContendedPaddingWidth=256"},
+        {"-XX:ContendedPaddingWidth=256"},       {"-XX:ContendedPaddingWidth=128"},
+    };
+
+    static final String appJar = ClassFileInstaller.getJarPath("field_layout.jar");
+
+    public static void main(String[] args) throws Exception {
+        for (int i = 0; i < flags.length; i += 2) {
+            String[] dumpFlags = flags[i+0];
+            String[] runFlags  = flags[i+1];
+
+            System.out.println("====================================================== Cases " + i + " and " + (i + 1));
+            logFlags("Dump:", dumpFlags);
+            logFlags("Run :", runFlags);
+
+            testDump(dontRestrict(dumpFlags));
+            testRun (dontRestrict(runFlags));
+        }
+    }
+
+    static void logFlags(String which, String[] flags) {
+        System.out.print(which);
+        String prefix = " ";
+        for (String s : flags) {
+            System.out.print(prefix);
+            System.out.print(s);
+            prefix = ", ";
+        }
+        System.out.println();
+    }
+
+    // Don't restrict @Contended to trusted classes, so we can use it in FieldLayoutApp
+    static String[] dontRestrict(String args[]) {
+        return TestCommon.concat("-XX:-RestrictContended", args);
+    }
+
+    static void testDump(String[] dumpFlags) throws Exception {
+        String classlist[] = new String[] {
+            "FieldLayoutApp",
+            "FieldLayoutApp$TestObject",
+            "FieldLayoutApp$Base1",
+            "FieldLayoutApp$Base2",
+
+            /*
+             * Note, the following classes are not archived, and will be loaded
+             * dynamically at run time. We check that their field layout is compatible with
+             * their super classes, which are archived.
+             */
+            // "FieldLayoutApp$Child1",
+            // "FieldLayoutApp$Child2",
+        };
+
+        TestCommon.testDump(appJar, classlist, dumpFlags);
+    }
+
+    static void testRun(String[] runFlags) throws Exception {
+        String[] cmds = TestCommon.concat(runFlags, "-cp", appJar);
+        if (Platform.isDebugBuild()) {
+            cmds = TestCommon.concat(cmds, "-XX:+PrintFieldLayout");
+        }
+        cmds = TestCommon.concat(cmds, "FieldLayoutApp");
+
+        TestCommon.run(cmds).assertNormalExit();
+    }
+}