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view graal/com.oracle.graal.compiler.test/src/com/oracle/graal/compiler/test/FinalizableSubclassTest.java @ 16188:84b5d413e540
register NoDeadCodeVerifyHandler with GraalDebugConfig
author | Doug Simon <doug.simon@oracle.com> |
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date | Thu, 19 Jun 2014 12:04:13 +0200 |
parents | c55f44b3c5e5 |
children | 91283d4a1218 |
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/* * Copyright (c) 2013, 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. */ package com.oracle.graal.compiler.test; import java.io.*; import java.lang.reflect.*; import java.util.*; import org.junit.*; import com.oracle.graal.api.code.*; import com.oracle.graal.api.code.Assumptions.Assumption; import com.oracle.graal.api.code.Assumptions.NoFinalizableSubclass; import com.oracle.graal.api.meta.*; import com.oracle.graal.debug.*; import com.oracle.graal.java.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.java.*; import com.oracle.graal.phases.*; import com.oracle.graal.phases.common.*; import com.oracle.graal.phases.common.inlining.*; import com.oracle.graal.phases.tiers.*; public class FinalizableSubclassTest extends GraalCompilerTest { /** * used as template to generate class files at runtime. */ public static class NoFinalizerEverAAAA { } public static class NoFinalizerYetAAAA { } public static class WithFinalizerAAAA extends NoFinalizerYetAAAA { @Override protected void finalize() throws Throwable { super.finalize(); } } private StructuredGraph parseAndProcess(Class<?> cl, Assumptions assumptions) { Constructor<?>[] constructors = cl.getConstructors(); Assert.assertTrue(constructors.length == 1); final ResolvedJavaMethod javaMethod = getMetaAccess().lookupJavaConstructor(constructors[0]); StructuredGraph graph = new StructuredGraph(javaMethod); GraphBuilderConfiguration conf = GraphBuilderConfiguration.getSnippetDefault(); new GraphBuilderPhase.Instance(getMetaAccess(), conf, OptimisticOptimizations.ALL).apply(graph); HighTierContext context = new HighTierContext(getProviders(), assumptions, null, getDefaultGraphBuilderSuite(), OptimisticOptimizations.ALL); new InliningPhase(new CanonicalizerPhase(true)).apply(graph, context); new CanonicalizerPhase(true).apply(graph, context); return graph; } private void checkForRegisterFinalizeNode(Class<?> cl, boolean shouldContainFinalizer, boolean optimistic) { Assumptions assumptions = new Assumptions(optimistic); StructuredGraph graph = parseAndProcess(cl, assumptions); Assert.assertTrue(graph.getNodes().filter(RegisterFinalizerNode.class).count() == (shouldContainFinalizer ? 1 : 0)); int noFinalizerAssumption = 0; for (Assumption a : assumptions) { if (a instanceof NoFinalizableSubclass) { noFinalizerAssumption++; } } Assert.assertTrue(noFinalizerAssumption == (shouldContainFinalizer ? 0 : 1)); } /** * Use a custom class loader to generate classes, to make sure the given classes are loaded in * correct order. */ @Test public void test1() throws ClassNotFoundException { for (int i = 0; i < 2; i++) { ClassTemplateLoader loader = new ClassTemplateLoader(); checkForRegisterFinalizeNode(loader.findClass("NoFinalizerEverAAAA"), true, false); checkForRegisterFinalizeNode(loader.findClass("NoFinalizerEverAAAA"), false, true); checkForRegisterFinalizeNode(loader.findClass("NoFinalizerYetAAAA"), false, true); checkForRegisterFinalizeNode(loader.findClass("WithFinalizerAAAA"), true, true); checkForRegisterFinalizeNode(loader.findClass("NoFinalizerYetAAAA"), true, true); } } private static class ClassTemplateLoader extends ClassLoader { private static int loaderInstance = 0; private final String replaceTo; private HashMap<String, Class<?>> cache = new HashMap<>(); public ClassTemplateLoader() { loaderInstance++; replaceTo = String.format("%04d", loaderInstance); } @Override protected Class<?> findClass(final String name) throws ClassNotFoundException { String nameReplaced = name.replaceAll("AAAA", replaceTo); if (cache.containsKey(nameReplaced)) { return cache.get(nameReplaced); } // copy classfile to byte array byte[] classData = null; try { InputStream is = FinalizableSubclassTest.class.getResourceAsStream("FinalizableSubclassTest$" + name + ".class"); assert is != null; ByteArrayOutputStream baos = new ByteArrayOutputStream(); byte[] buf = new byte[1024]; int size; while ((size = is.read(buf, 0, buf.length)) != -1) { baos.write(buf, 0, size); } baos.flush(); classData = baos.toByteArray(); } catch (IOException e) { Assert.fail("can't access class: " + name); } dumpStringsInByteArray(classData); // replace all occurrences of "AAAA" in classfile int index = -1; while ((index = indexOfAAAA(classData, index + 1)) != -1) { replaceAAAA(classData, index, replaceTo); } dumpStringsInByteArray(classData); Class<?> c = defineClass(null, classData, 0, classData.length); cache.put(nameReplaced, c); return c; } private static int indexOfAAAA(byte[] b, int index) { for (int i = index; i < b.length; i++) { boolean match = true; for (int j = i; j < i + 4; j++) { if (b[j] != (byte) 'A') { match = false; break; } } if (match) { return i; } } return -1; } private static void replaceAAAA(byte[] b, int index, String replacer) { assert replacer.length() == 4; for (int i = index; i < index + 4; i++) { b[i] = (byte) replacer.charAt(i - index); } } private static void dumpStringsInByteArray(byte[] b) { boolean wasChar = true; StringBuilder sb = new StringBuilder(); for (Byte x : b) { // check for [a-zA-Z0-9] if ((x >= 0x41 && x <= 0x7a) || (x >= 0x30 && x <= 0x39)) { if (!wasChar) { Debug.log(sb + ""); sb.setLength(0); } sb.append(String.format("%c", x)); wasChar = true; } else { wasChar = false; } } Debug.log(sb + ""); } } }