1 /*
   2  * Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 package jdk.vm.ci.hotspot.test;
  24 
  25 import java.util.ArrayList;
  26 import java.util.Arrays;
  27 import java.util.List;
  28 import java.util.function.Predicate;
  29 
  30 import org.junit.Assert;
  31 import org.junit.Test;
  32 
  33 import jdk.vm.ci.hotspot.HotSpotJVMCIRuntime;
  34 import jdk.vm.ci.meta.MetaAccessProvider;
  35 import jdk.vm.ci.meta.ResolvedJavaType;
  36 
  37 public class TestHotSpotJVMCIRuntime {
  38 
  39     @Test
  40     public void writeDebugOutputTest() {
  41         HotSpotJVMCIRuntime runtime = HotSpotJVMCIRuntime.runtime();
  42 
  43         expectWriteDebugOutputFailure(runtime, null, 0, 0, true, true, NullPointerException.class);
  44         expectWriteDebugOutputFailure(runtime, null, 0, 0, true, false, -1);
  45 
  46         byte[] emptyOutput = {};
  47         byte[] nonEmptyOutput = String.format("non-empty output%n").getBytes();
  48 
  49         for (boolean canThrow : new boolean[]{true, false}) {
  50             for (byte[] output : new byte[][]{emptyOutput, nonEmptyOutput}) {
  51                 for (int offset = 0; offset < output.length; offset++) {
  52                     int length = output.length - offset;
  53                     runtime.writeDebugOutput(output, offset, length, true, canThrow);
  54                 }
  55 
  56                 Object expect = canThrow ? IndexOutOfBoundsException.class : -2;
  57                 expectWriteDebugOutputFailure(runtime, output, output.length + 1, 0, true, canThrow, expect);
  58                 expectWriteDebugOutputFailure(runtime, output, 0, output.length + 1, true, canThrow, expect);
  59                 expectWriteDebugOutputFailure(runtime, output, -1, 0, true, canThrow, expect);
  60                 expectWriteDebugOutputFailure(runtime, output, 0, -1, true, canThrow, expect);
  61             }
  62         }
  63     }
  64 
  65     private static void expectWriteDebugOutputFailure(HotSpotJVMCIRuntime runtime, byte[] bytes, int offset, int length, boolean flush, boolean canThrow, Object expect) {
  66         try {
  67             int result = runtime.writeDebugOutput(bytes, offset, length, flush, canThrow);
  68             if (expect instanceof Integer) {
  69                 Assert.assertEquals((int) expect, result);
  70             } else {
  71                 Assert.fail("expected " + expect + ", got " + result + " for bytes == " + Arrays.toString(bytes));
  72             }
  73         } catch (Exception e) {
  74             if (expect instanceof Integer) {
  75                 Assert.fail("expected " + expect + ", got " + e + " for bytes == " + Arrays.toString(bytes));
  76             } else {
  77                 Assert.assertTrue(e.toString(), ((Class<?>) expect).isInstance(e));
  78             }
  79         }
  80     }
  81 
  82     @Test
  83     public void getIntrinsificationTrustPredicateTest() throws Exception {
  84         HotSpotJVMCIRuntime runtime = HotSpotJVMCIRuntime.runtime();
  85         MetaAccessProvider metaAccess = runtime.getHostJVMCIBackend().getMetaAccess();
  86         Predicate<ResolvedJavaType> predicate = runtime.getIntrinsificationTrustPredicate(HotSpotJVMCIRuntime.class);
  87         List<Class<?>> classes = new ArrayList<>(Arrays.asList(
  88                         Object.class,
  89                         String.class,
  90                         Class.class,
  91                         HotSpotJVMCIRuntime.class,
  92                         VirtualObjectLayoutTest.class,
  93                         TestHotSpotJVMCIRuntime.class));
  94         try {
  95             classes.add(Class.forName("com.sun.crypto.provider.AESCrypt"));
  96             classes.add(Class.forName("com.sun.crypto.provider.CipherBlockChaining"));
  97         } catch (ClassNotFoundException e) {
  98             // Extension classes not available
  99         }
 100         ClassLoader jvmciLoader = HotSpotJVMCIRuntime.class.getClassLoader();
 101         ClassLoader extLoader = getExtensionLoader();
 102         for (Class<?> c : classes) {
 103             ClassLoader cl = c.getClassLoader();
 104             boolean expected = cl == null || cl == jvmciLoader || cl == extLoader;
 105             boolean actual = predicate.test(metaAccess.lookupJavaType(c));
 106             Assert.assertEquals(c + ": cl=" + cl, expected, actual);
 107         }
 108     }
 109 
 110     private static ClassLoader getExtensionLoader() throws Exception {
 111         Object launcher = Class.forName("sun.misc.Launcher").getMethod("getLauncher").invoke(null);
 112         ClassLoader appLoader = (ClassLoader) launcher.getClass().getMethod("getClassLoader").invoke(launcher);
 113         ClassLoader extLoader = appLoader.getParent();
 114         assert extLoader.getClass().getName().equals("sun.misc.Launcher$ExtClassLoader") : extLoader;
 115         return extLoader;
 116     }
 117 }