/*
 * Copyright (c) 2011, 2018, 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.hotspot.test;

import org.graalvm.compiler.core.test.GraalCompilerTest;
import org.graalvm.compiler.nodes.StructuredGraph;
import org.graalvm.compiler.nodes.extended.ForeignCallNode;
import org.graalvm.compiler.options.OptionValues;
import org.junit.Assume;
import org.junit.Test;

import jdk.vm.ci.code.InstalledCode;
import jdk.vm.ci.meta.ProfilingInfo;
import jdk.vm.ci.meta.ResolvedJavaMethod;
import jdk.vm.ci.meta.TriState;

public class ExplicitExceptionTest extends GraalCompilerTest {

    private int expectedForeignCallCount;

    
Determines if profiling info for method indicates an exception was thrown somewhere in the method. In the case of the -Xcomp VM option, interpreter execution can be skipped altogether and other execution engines (e.g., C1) may not record seen exceptions in a method profile.
/** * Determines if profiling info for {@code method} indicates an exception was thrown somewhere * in the method. In the case of the {@code -Xcomp} VM option, interpreter execution can be * skipped altogether and other execution engines (e.g., C1) may not record seen exceptions in a * method profile. */
private static boolean exceptionWasSeen(ResolvedJavaMethod method) { ProfilingInfo profilingInfo = method.getProfilingInfo(); if (profilingInfo != null) { for (int i = 0; i < profilingInfo.getCodeSize(); i++) { if (profilingInfo.getExceptionSeen(i) == TriState.TRUE) { return true; } } } return false; } @Override protected InstalledCode getCode(ResolvedJavaMethod method, StructuredGraph graph, boolean forceCompile, boolean installAsDefault, OptionValues options) { InstalledCode installedCode = super.getCode(method, graph, forceCompile, installAsDefault, options); Assume.assumeTrue(exceptionWasSeen(method)); assertDeepEquals(expectedForeignCallCount, lastCompiledGraph.getNodes().filter(ForeignCallNode.class).count()); return installedCode; } public static int testAIOOBESnippet(int[] array) { return array[10]; } @Test public void testAIOOBE() { int[] array = new int[4]; for (int i = 0; i < 10000; i++) { try { testAIOOBESnippet(array); } catch (ArrayIndexOutOfBoundsException e) { // nothing to do } } expectedForeignCallCount = 2; test("testAIOOBESnippet", array); } public static int testNPEArraySnippet(int[] array) { return array[10]; } @Test public void testNPEArray() { int[] array = null; for (int i = 0; i < 10000; i++) { try { testNPEArraySnippet(array); } catch (NullPointerException e) { // nothing to do } } expectedForeignCallCount = 2; test("testNPEArraySnippet", array); } private static class TestClass { int field; } public static int testNPESnippet(TestClass obj) { return obj.field; } @SuppressWarnings("unused") @Test public void testNPE() { new TestClass(); TestClass obj = null; for (int i = 0; i < 10000; i++) { try { testNPESnippet(obj); } catch (NullPointerException e) { // nothing to do } } expectedForeignCallCount = 1; test("testNPESnippet", obj); } }