236 lines
9.6 KiB
Java
236 lines
9.6 KiB
Java
/*
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* Copyright (c) 2011, 2016, 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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/*
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* @test
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* @bug 7092965
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* @summary javac should not close processorClassLoader before end of compilation
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* @modules jdk.compiler/com.sun.tools.javac.api
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* jdk.compiler/com.sun.tools.javac.file
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*/
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import com.sun.source.util.JavacTask;
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import com.sun.source.util.TaskEvent;
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import com.sun.source.util.TaskListener;
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import com.sun.tools.javac.api.ClientCodeWrapper.Trusted;
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import com.sun.tools.javac.api.BasicJavacTask;
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import com.sun.tools.javac.api.JavacTool;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.io.IOException;
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import java.io.PrintStream;
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import java.lang.reflect.Field;
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import java.net.URI;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.List;
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import javax.annotation.processing.ProcessingEnvironment;
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import javax.tools.JavaFileObject;
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import javax.tools.SimpleJavaFileObject;
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import javax.tools.StandardJavaFileManager;
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import javax.tools.StandardLocation;
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import javax.tools.ToolProvider;
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/*
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* The test compiles an annotation processor and a helper class into a
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* custom classes directory.
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*
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* It then uses them while compiling a dummy file, with the custom classes
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* directory on the processor path, thus guaranteeing that references to
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* these class are satisfied by the processor class loader.
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*
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* The annotation processor uses the javac TaskListener to run code
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* after annotation processing has completed, to verify that the classloader
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* is not closed until the end of the compilation.
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*/
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@Trusted // avoids use of ClientCodeWrapper
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public class TestClose implements TaskListener {
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public static final String annoProc =
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"import java.util.*;\n" +
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"import javax.annotation.processing.*;\n" +
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"import javax.lang.model.*;\n" +
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"import javax.lang.model.element.*;\n" +
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"import com.sun.source.util.*;\n" +
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"import com.sun.tools.javac.processing.*;\n" +
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"import com.sun.tools.javac.util.*;\n" +
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"@SupportedAnnotationTypes(\"*\")\n" +
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"public class AnnoProc extends AbstractProcessor {\n" +
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" @Override\n" +
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" public SourceVersion getSupportedSourceVersion() {\n" +
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" return SourceVersion.latest();\n" +
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" }\n" +
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" @Override\n" +
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" public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {\n" +
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" System.out.println(\"in AnnoProc.process\");\n" +
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" final ClassLoader cl = getClass().getClassLoader();\n" +
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" if (roundEnv.processingOver()) {\n" +
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" TestClose.add(processingEnv, new Runnable() {\n" +
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" public void run() {\n" +
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" System.out.println(getClass().getName() + \": run()\");\n" +
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" try {\n" +
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" cl.loadClass(\"Callback\")\n" +
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" .asSubclass(Runnable.class)\n" +
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" .newInstance()\n" +
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" .run();\n" +
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" } catch (ReflectiveOperationException e) {\n" +
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" throw new Error(e);\n" +
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" }\n" +
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" }\n" +
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" });\n" +
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" }\n" +
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" return true;\n" +
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" }\n" +
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"}\n";
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public static final String callback =
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"public class Callback implements Runnable {\n" +
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" public void run() {\n" +
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" System.out.println(getClass().getName() + \": run()\");\n" +
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" }\n" +
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"}";
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public static void main(String... args) throws Exception {
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new TestClose().run();
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}
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void run() throws IOException {
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JavacTool tool = (JavacTool) ToolProvider.getSystemJavaCompiler();
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try (StandardJavaFileManager fm = tool.getStandardFileManager(null, null, null)) {
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File classes = new File("classes");
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classes.mkdirs();
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File extraClasses = new File("extraClasses");
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extraClasses.mkdirs();
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System.out.println("compiling classes to extraClasses");
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{ // setup class in extraClasses
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fm.setLocation(StandardLocation.CLASS_OUTPUT,
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Collections.singleton(extraClasses));
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List<? extends JavaFileObject> files = Arrays.asList(
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new MemFile("AnnoProc.java", annoProc),
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new MemFile("Callback.java", callback));
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List<String> options = Arrays.asList(
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"--add-exports", "jdk.compiler/com.sun.tools.javac.processing=ALL-UNNAMED",
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"--add-exports", "jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED",
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"-XDaccessInternalAPI");
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JavacTask task = tool.getTask(null, fm, null, options, null, files);
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check(task.call());
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}
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System.out.println("compiling dummy to classes with anno processor");
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{ // use that class in a TaskListener after processing has completed
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PrintStream prev = System.out;
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String out;
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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try (PrintStream ps = new PrintStream(baos)) {
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System.setOut(ps);
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File testClasses = new File(System.getProperty("test.classes"));
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fm.setLocation(StandardLocation.CLASS_OUTPUT,
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Collections.singleton(classes));
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fm.setLocation(StandardLocation.ANNOTATION_PROCESSOR_PATH,
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Arrays.asList(extraClasses, testClasses));
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List<? extends JavaFileObject> files = Arrays.asList(
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new MemFile("my://dummy", "class Dummy { }"));
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List<String> options = Arrays.asList("-XDaccessInternalAPI", "-processor", "AnnoProc");
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JavacTask task = tool.getTask(null, fm, null, options, null, files);
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task.setTaskListener(this);
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check(task.call());
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} finally {
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System.setOut(prev);
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out = baos.toString();
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if (!out.isEmpty())
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System.out.println(out);
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}
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check(out.contains("AnnoProc$1: run()"));
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check(out.contains("Callback: run()"));
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}
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}
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}
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@Override
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public void started(TaskEvent e) {
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System.out.println("Started: " + e);
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}
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@Override
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public void finished(TaskEvent e) {
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System.out.println("Finished: " + e);
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if (e.getKind() == TaskEvent.Kind.ANALYZE) {
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for (Runnable r: runnables) {
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System.out.println("running " + r);
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r.run();
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}
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}
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}
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void check(boolean b) {
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if (!b)
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throw new AssertionError();
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}
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public static void add(ProcessingEnvironment env, Runnable r) {
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// ensure this class in this class loader can access javac internals
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try {
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JavacTask task = JavacTask.instance(env);
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TaskListener l = ((BasicJavacTask) task).getTaskListeners().iterator().next();
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// The TaskListener is an instanceof TestClose, but when using the
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// default class loaders. the taskListener uses a different
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// instance of Class<TestClose> than the anno processor.
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// If you try to evaluate
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// TestClose tc = (TestClose) (l).
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// you get the following somewhat confusing error:
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// java.lang.ClassCastException: TestClose cannot be cast to TestClose
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// The workaround is to access the fields of TestClose with reflection.
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Field f = l.getClass().getField("runnables");
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@SuppressWarnings("unchecked")
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List<Runnable> runnables = (List<Runnable>) f.get(l);
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runnables.add(r);
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} catch (Throwable t) {
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t.printStackTrace();
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}
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}
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public List<Runnable> runnables = new ArrayList<>();
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class MemFile extends SimpleJavaFileObject {
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public final String text;
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MemFile(String name, String text) {
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super(URI.create(name), JavaFileObject.Kind.SOURCE);
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this.text = text;
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}
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@Override
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public String getName() {
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return uri.toString();
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}
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@Override
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public String getCharContent(boolean ignoreEncodingErrors) {
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return text;
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}
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}
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}
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