1 /* 2 * Copyright (c) 2021, Alibaba Group Holding Limited. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 package runtime.valhalla.inlinetypes; 25 26 import jdk.test.lib.process.ProcessTools; 27 import jdk.test.lib.process.OutputAnalyzer; 28 import jdk.test.lib.JDKToolFinder; 29 import jdk.internal.vm.annotation.LooselyConsistentValue; 30 import jdk.internal.vm.annotation.ImplicitlyConstructible; 31 import jdk.internal.vm.annotation.NullRestricted; 32 33 /* 34 * @test 35 * @summary Test the VM.class_print_layout command 36 * @library /test/lib 37 * @modules java.base/jdk.internal.vm.annotation 38 * @enablePreview 39 * @compile ClassPrintLayoutDcmd.java 40 * @run main/othervm runtime.valhalla.inlinetypes.ClassPrintLayoutDcmd 41 */ 42 43 public value class ClassPrintLayoutDcmd { 44 45 @ImplicitlyConstructible 46 @LooselyConsistentValue 47 static value class Point { 48 int i = 0; 49 int j = 0; 50 } 51 52 @ImplicitlyConstructible 53 @LooselyConsistentValue 54 static value class Line { 55 @NullRestricted 56 Point p1; 57 @NullRestricted 58 Point p2; 59 Line() { 60 this.p1 = this.p2 = new Point(); 61 } 62 } 63 static { 64 try { 65 Class.forName(Line.class.getName()); 66 } catch(Throwable e) { 67 throw new RuntimeException("failed to find class"); 68 } 69 } 70 static ProcessBuilder pb = new ProcessBuilder(); 71 72 static void testCmd(String arg, int expectExitCode, String... expectStrings) throws Exception { 73 // Grab my own PID 74 String pid = Long.toString(ProcessTools.getProcessId()); 75 76 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.class_print_layout", arg }); 77 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 78 output.shouldHaveExitValue(expectExitCode); 79 for (String expectString : expectStrings) { 80 output.shouldContain(expectString); 81 } 82 } 83 84 public static void main(String args[]) throws Exception { 85 testCmd("foo/bar", 0, ""); 86 testCmd("", 1, "IllegalArgumentException", "mandatory"); 87 testCmd("java/lang/Object", 0, "java/lang/Object", "@bootstrap"); 88 testCmd("java/lang/Class", 0, "java/lang/Class", "@bootstrap"); 89 testCmd("runtime/valhalla/inlinetypes/ClassPrintLayoutDcmd$Line", 0, "@app", "p1", "p2"); 90 } 91 }