author | erikj |
Tue, 12 Sep 2017 19:03:39 +0200 | |
changeset 47216 | 71c04702a3d5 |
parent 33020 | langtools/test/tools/javac/T8000316/T8000316.java@7ed4f7ff42c5 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2015, 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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/* |
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* @test |
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* @bug 8000316 |
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* @summary Huge performance bottleneck in com.sun.tools.javac.comp.Check.localClassName |
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* @modules jdk.compiler |
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* @run main T8000316 |
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*/ |
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import com.sun.source.util.JavacTask; |
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import java.net.URI; |
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import java.util.List; |
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import java.util.ArrayList; |
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import java.util.Locale; |
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import javax.tools.Diagnostic; |
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import javax.tools.JavaCompiler; |
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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.ToolProvider; |
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|
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public class T8000316 { |
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final static int N_METHODS = 1024; |
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final static int N_CLASSES = 8; |
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|
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static class TestClass extends SimpleJavaFileObject { |
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|
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String methTemplate = " public static Runnable get#N() {\n" + |
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" return new Runnable() {\n" + |
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" @Override\n" + |
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" public void run() {\n" + |
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" return;\n" + |
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" }\n" + |
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" };\n" + |
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" }\n"; |
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|
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String classTemplate = "\n\nclass Chain#N {\n\n#M }"; |
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|
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String source; |
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public TestClass() { |
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super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE); |
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StringBuilder buf = new StringBuilder(); |
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StringBuilder fileBuf = new StringBuilder(); |
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for (int i = 0 ; i < N_CLASSES ; i++) { |
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for (int j = 0; j < N_METHODS; j++) { |
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buf.append(methTemplate.replace("#N", String.valueOf(j))); |
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buf.append("\n"); |
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} |
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fileBuf.append(classTemplate.replace("#M", buf.toString()).replace("#N", String.valueOf(i))); |
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buf = new StringBuilder(); |
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source = fileBuf.toString(); |
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} |
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} |
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@Override |
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public CharSequence getCharContent(boolean ignoreEncodingErrors) { |
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return source; |
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} |
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} |
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public static void main(String... args) throws Exception { |
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ArrayList<JavaFileObject> sources = new ArrayList<>(); |
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sources.add(new TestClass()); |
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new T8000316().run(sources); |
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} |
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void run(List<JavaFileObject> sources) throws Exception { |
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javax.tools.DiagnosticListener<JavaFileObject> dc = (diagnostic) -> { |
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if (diagnostic.getKind() == Diagnostic.Kind.ERROR) { |
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throw new AssertionError("unexpected diagnostic: " + diagnostic.getMessage(Locale.getDefault())); |
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} |
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}; |
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JavaCompiler comp = ToolProvider.getSystemJavaCompiler(); |
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try (StandardJavaFileManager fm = comp.getStandardFileManager(null, null, null)) { |
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JavacTask ct = (JavacTask)comp.getTask(null, fm, dc, |
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null, null, sources); |
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ct.analyze(); |
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} |
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} |
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} |