| /* |
| * 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. |
| */ |
| package org.graalvm.compiler.replacements.test; |
| |
| import java.util.Random; |
| |
| import org.graalvm.compiler.core.test.GraalCompilerTest; |
| import org.graalvm.compiler.phases.common.AbstractInliningPhase; |
| import org.graalvm.compiler.test.ExportingClassLoader; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| import org.objectweb.asm.ClassWriter; |
| import org.objectweb.asm.Label; |
| import org.objectweb.asm.MethodVisitor; |
| import org.objectweb.asm.Opcodes; |
| import jdk.vm.ci.meta.ResolvedJavaMethod; |
| |
| /** |
| * Tests that deoptimization upon exception handling works. |
| */ |
| public class DeoptimizeOnExceptionTest extends GraalCompilerTest { |
| |
| public DeoptimizeOnExceptionTest() { |
| getSuites().getHighTier().findPhase(AbstractInliningPhase.class).remove(); |
| } |
| |
| private static void raiseException(String m1, String m2, String m3, String m4, String m5) { |
| throw new RuntimeException(m1 + m2 + m3 + m4 + m5); |
| } |
| |
| @Test |
| public void test1() { |
| test("test1Snippet", "m1", "m2", "m3", "m4", "m5"); |
| } |
| |
| // no local exception handler - will deopt |
| public static String test1Snippet(String m1, String m2, String m3, String m4, String m5) { |
| if (m1 != null) { |
| raiseException(m1, m2, m3, m4, m5); |
| } |
| return m1 + m2 + m3 + m4 + m5; |
| } |
| |
| @Test |
| public void test2() { |
| test("test2Snippet"); |
| } |
| |
| public String test2Snippet() throws Exception { |
| try { |
| ClassLoader testCl = new MyClassLoader(); |
| @SuppressWarnings("unchecked") |
| Class<Runnable> c = (Class<Runnable>) testCl.loadClass(name); |
| Runnable r = c.newInstance(); |
| ct = Long.MAX_VALUE; |
| // warmup |
| for (int i = 0; i < 100; i++) { |
| r.run(); |
| } |
| // compile |
| ResolvedJavaMethod method = getResolvedJavaMethod(c, "run"); |
| getCode(method); |
| ct = 0; |
| r.run(); |
| } catch (Throwable e) { |
| e.printStackTrace(System.out); |
| Assert.fail(); |
| } |
| return "SUCCESS"; |
| } |
| |
| public static class MyClassLoader extends ExportingClassLoader { |
| @Override |
| protected Class<?> findClass(String className) throws ClassNotFoundException { |
| return defineClass(name.replace('/', '.'), clazz, 0, clazz.length); |
| } |
| } |
| |
| public static void methodB() { |
| Random r = new Random(System.currentTimeMillis()); |
| while (r.nextFloat() > .03f) { |
| // Empty |
| } |
| |
| return; |
| } |
| |
| public static void methodA() { |
| Random r = new Random(System.currentTimeMillis()); |
| while (r.nextDouble() > .05) { |
| // Empty |
| } |
| return; |
| } |
| |
| private static Object m = new Object(); |
| static long ct = Long.MAX_VALUE; |
| |
| public static Object getM() { |
| if (ct-- > 0) { |
| return m; |
| } else { |
| return null; |
| } |
| } |
| |
| private static String name = "t/TestJSR"; |
| |
| private static final byte[] clazz = makeClazz(); |
| |
| private static byte[] makeClazz() { |
| // Code generated the class below using asm. |
| String clazzName = DeoptimizeOnExceptionTest.class.getName().replace('.', '/'); |
| final ClassWriter w = new ClassWriter(0); |
| w.visit(Opcodes.V1_5, Opcodes.ACC_PUBLIC, |
| "t/TestJSR", null, "java/lang/Object", |
| new String[]{"java/lang/Runnable"}); |
| MethodVisitor mv = w.visitMethod(Opcodes.ACC_PUBLIC, "<init>", "()V", null, new String[]{}); |
| mv.visitCode(); |
| mv.visitVarInsn(Opcodes.ALOAD, 0); |
| mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false); |
| mv.visitInsn(Opcodes.RETURN); |
| mv.visitMaxs(10, 10); |
| mv.visitEnd(); |
| |
| mv = w.visitMethod(Opcodes.ACC_PUBLIC, "run", "()V", null, null); |
| mv.visitCode(); |
| mv.visitMethodInsn(Opcodes.INVOKESTATIC, clazzName, "getM", "()Ljava/lang/Object;", false); |
| Label l1 = new Label(); |
| mv.visitJumpInsn(Opcodes.JSR, l1); |
| mv.visitInsn(Opcodes.RETURN); |
| |
| mv.visitLabel(l1); |
| mv.visitVarInsn(Opcodes.ASTORE, 1); |
| |
| Label lElse = new Label(); |
| Label lEnd = new Label(); |
| mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/System", "currentTimeMillis", "()J", false); |
| mv.visitInsn(Opcodes.POP2); |
| mv.visitMethodInsn(Opcodes.INVOKESTATIC, clazzName, "getM", "()Ljava/lang/Object;", false); |
| mv.visitInsn(Opcodes.DUP); |
| mv.visitJumpInsn(Opcodes.IFNULL, lElse); |
| mv.visitMethodInsn(Opcodes.INVOKESTATIC, clazzName, "methodA", "()V", false); |
| mv.visitJumpInsn(Opcodes.GOTO, lEnd); |
| mv.visitLabel(lElse); |
| mv.visitMethodInsn(Opcodes.INVOKESTATIC, clazzName, "methodB", "()V", false); |
| mv.visitLabel(lEnd); |
| |
| mv.visitVarInsn(Opcodes.RET, 1); |
| mv.visitMaxs(10, 10); |
| mv.visitEnd(); |
| return w.toByteArray(); |
| } |
| } |