1 /*
   2  * Copyright (c) 2017, Oracle and/or its affiliates. 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
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  22  *
  23  */
  24 
  25 /*
  26  * @test
  27  * @summary Test for field annotations.
  28  * @requires vm.cds
  29  * @library /test/lib
  30  * @modules java.base/jdk.internal.misc
  31  *          java.management
  32  *          jdk.jartool/sun.tools.jar
  33  * @compile test-classes/FieldAnnotationsApp.java test-classes/MyAnnotation.java
  34  * @run main FieldAnnotationsTest
  35  */
  36 
  37 import jdk.test.lib.process.OutputAnalyzer;
  38 
  39 // This is a test for the handling of multi-dimensional Arrays in MetaspaceClosure.
  40 //
  41 // We choose FieldAnnotations because they happen to be implemented as a multi-dimension
  42 // Array (Annotations::_fields_annotations, which is of type Array<Array<unsigned char>*>*,
  43 // and is handled by the template class PointerArrayRef<T> in metaspaceClosure.hpp).
  44 //
  45 // Specifically, we are testing the following C code, where _fields_annotations is non-NULL:
  46 //
  47 // void Annotations::metaspace_pointers_do(MetaspaceClosure* it) {
  48 //   ...
  49 //   it->push(&_fields_annotations);
  50 //
  51 // which will be matched with the function
  52 //
  53 // template <typename T> void MetaspaceClosure::push(Array<T*>** mpp, Writability w = _default)
  54 //
  55 public class FieldAnnotationsTest {
  56     public static void main(String[] args) throws Exception {
  57         String[] ARCHIVE_CLASSES = {"FieldAnnotationsApp", "MyAnnotation"};
  58         String appJar = JarBuilder.build("FieldAnnotationsTest", ARCHIVE_CLASSES);
  59 
  60         OutputAnalyzer dumpOutput = TestCommon.dump(
  61                 appJar, ARCHIVE_CLASSES);
  62         TestCommon.checkDump(dumpOutput);
  63 
  64         OutputAnalyzer execOutput = TestCommon.exec(appJar, "FieldAnnotationsApp");
  65         TestCommon.checkExec(execOutput, "Field annotations are OK.");
  66     }
  67 }