jdk8-mips64-public/langtools: test/tools/javac/processing/loader/testClose/TestClose.java@b0d5f00e69f7 (annotated)

test/tools/javac/processing/loader/testClose/TestClose.java@b0d5f00e69f7 (annotated)

test/tools/javac/processing/loader/testClose/TestClose.java

Wed, 21 Sep 2011 21:56:53 -0700

author: jjg
date: Wed, 21 Sep 2011 21:56:53 -0700
changeset 1096: b0d5f00e69f7
child 1210: 62e611704863
permissions: -rw-r--r--

7092965: javac should not close processorClassLoader before end of compilation
Reviewed-by: darcy

 /*
  * Copyright (c) 2011, 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
  * @bug 7092965
  * @summary javac should not close processorClassLoader before end of compilation
  */
 import com.sun.source.util.JavacTask;
 import com.sun.source.util.TaskEvent;
 import com.sun.source.util.TaskListener;
 import com.sun.tools.javac.api.ClientCodeWrapper.Trusted;
 import com.sun.tools.javac.api.JavacTool;
 import com.sun.tools.javac.processing.JavacProcessingEnvironment;
 import com.sun.tools.javac.util.Context;
 import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.IOException;
 import java.io.PrintStream;
 import java.lang.reflect.Field;
 import java.net.URI;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
 import javax.annotation.processing.ProcessingEnvironment;
 import javax.tools.JavaFileObject;
 import javax.tools.SimpleJavaFileObject;
 import javax.tools.StandardJavaFileManager;
 import javax.tools.StandardLocation;
 import javax.tools.ToolProvider;
 /*
  * The test compiles an annotation processor and a helper class into a
  * custom classes directory.
  *
  * It then uses them while compiling a dummy file, with the custom classes
  * directory on the processor path, thus guaranteeing that references to
  * these class are satisfied by the processor class loader.
  *
  * The annotation processor uses the javac TaskListener to run code
  * after annotation processing has completed, to verify that the classloader
  * is not closed until the end of the compilation.
  */
 @Trusted // avoids use of ClientCodeWrapper
 public class TestClose implements TaskListener {
     public static final String annoProc =
         "import java.util.*;\n" +
         "import javax.annotation.processing.*;\n" +
         "import javax.lang.model.*;\n" +
         "import javax.lang.model.element.*;\n" +
         "import com.sun.source.util.*;\n" +
         "import com.sun.tools.javac.processing.*;\n" +
         "import com.sun.tools.javac.util.*;\n" +
         "@SupportedAnnotationTypes(\"*\")\n" +
         "public class AnnoProc extends AbstractProcessor {\n" +
         "    @Override\n" +
         "    public SourceVersion getSupportedSourceVersion() {\n" +
         "        return SourceVersion.latest();\n" +
         "    }\n" +
         "    @Override\n" +
         "    public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {\n" +
         "        System.out.println(\"in AnnoProc.process\");\n" +
         "        final ClassLoader cl = getClass().getClassLoader();\n" +
         "        if (roundEnv.processingOver()) {\n" +
         "            TestClose.add(processingEnv, new Runnable() {\n" +
         "                public void run() {\n" +
         "                    System.out.println(getClass().getName() + \": run()\");\n" +
         "                    try {\n" +
         "                    cl.loadClass(\"Callback\")\n" +
         "                        .asSubclass(Runnable.class)\n" +
         "                        .newInstance()\n" +
         "                        .run();\n" +
         "                    } catch (ReflectiveOperationException e) {\n" +
         "                        throw new Error(e);\n" +
         "                    }\n" +
         "                }\n" +
         "            });\n" +
         "        }\n" +
         "        return true;\n" +
         "    }\n" +
         "}\n";
     public static final String callback =
         "public class Callback implements Runnable {\n" +
         "    public void run() {\n" +
         "        System.out.println(getClass().getName() + \": run()\");\n" +
         "    }\n" +
         "}";
     public static void main(String... args) throws Exception {
         new TestClose().run();
     }
     void run() throws IOException {
         JavacTool tool = (JavacTool) ToolProvider.getSystemJavaCompiler();
         StandardJavaFileManager fm = tool.getStandardFileManager(null, null, null);
         File classes = new File("classes");
         classes.mkdirs();
         File extraClasses = new File("extraClasses");
         extraClasses.mkdirs();
         System.out.println("compiling classes to extraClasses");
         {   // setup class in extraClasses
             fm.setLocation(StandardLocation.CLASS_OUTPUT,
                     Collections.singleton(extraClasses));
             List<? extends JavaFileObject> files = Arrays.asList(
                     new MemFile("AnnoProc.java", annoProc),
                     new MemFile("Callback.java", callback));
             JavacTask task = tool.getTask(null, fm, null, null, null, files);
             check(task.call());
         }
         System.out.println("compiling dummy to classes with anno processor");
         {   // use that class in a TaskListener after processing has completed
             PrintStream prev = System.out;
             String out;
             ByteArrayOutputStream baos = new ByteArrayOutputStream();
             try (PrintStream ps = new PrintStream(baos)) {
                 System.setOut(ps);
                 File testClasses = new File(System.getProperty("test.classes"));
                 fm.setLocation(StandardLocation.CLASS_OUTPUT,
                         Collections.singleton(classes));
                 fm.setLocation(StandardLocation.ANNOTATION_PROCESSOR_PATH,
                         Arrays.asList(extraClasses, testClasses));
                 List<? extends JavaFileObject> files = Arrays.asList(
                         new MemFile("my://dummy", "class Dummy { }"));
                 List<String> options = Arrays.asList("-processor", "AnnoProc");
                 JavacTask task = tool.getTask(null, fm, null, options, null, files);
                 task.setTaskListener(this);
                 check(task.call());
             } finally {
                 System.setOut(prev);
                 out = baos.toString();
                 if (!out.isEmpty())
                     System.out.println(out);
             }
             check(out.contains("AnnoProc$1: run()"));
             check(out.contains("Callback: run()"));
         }
     }
     @Override
     public void started(TaskEvent e) {
         System.out.println("Started: " + e);
     }
     @Override
     public void finished(TaskEvent e) {
         System.out.println("Finished: " + e);
         if (e.getKind() == TaskEvent.Kind.ANALYZE) {
             for (Runnable r: runnables) {
                 System.out.println("running " + r);
                 r.run();
             }
         }
     }
     void check(boolean b) {
         if (!b)
             throw new AssertionError();
     }
     public static void add(ProcessingEnvironment env, Runnable r) {
         try {
             Context c = ((JavacProcessingEnvironment) env).getContext();
             Object o = c.get(TaskListener.class);
             // The TaskListener is an instanceof TestClose, but when using the
             // default class loaders. the taskListener uses a different
             // instance of Class<TestClose> than the anno processor.
             // If you try to evaluate
             //      TestClose tc = (TestClose) (o).
             // you get the following somewhat confusing error:
             //   java.lang.ClassCastException: TestClose cannot be cast to TestClose
             // The workaround is to access the fields of TestClose with reflection.
             Field f = o.getClass().getField("runnables");
             @SuppressWarnings("unchecked")
             List<Runnable> runnables = (List<Runnable>) f.get(o);
             runnables.add(r);
         } catch (Throwable t) {
             System.err.println(t);
         }
     }
     public List<Runnable> runnables = new ArrayList<>();
     class MemFile extends SimpleJavaFileObject {
         public final String text;
         MemFile(String name, String text) {
             super(URI.create(name), JavaFileObject.Kind.SOURCE);
             this.text = text;
         }
         @Override
         public String getName() {
             return uri.toString();
         }
         @Override
         public String getCharContent(boolean ignoreEncodingErrors) {
             return text;
         }
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

test/tools/javac/processing/loader/testClose/TestClose.java@b0d5f00e69f7 (annotated)

test/tools/javac/processing/loader/testClose/TestClose.java