1 /* 2 * Copyright (c) 2012, 2018, 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 24 25 package org.graalvm.compiler.api.test; 26 27 import java.util.Formatter; 28 29 import org.graalvm.compiler.api.runtime.GraalJVMCICompiler; 30 import org.graalvm.compiler.api.runtime.GraalRuntime; 31 32 import jdk.vm.ci.runtime.JVMCI; 33 import jdk.vm.ci.runtime.JVMCICompiler; 34 import jdk.vm.ci.services.Services; 35 36 /** 37 * Access point for {@linkplain #getRuntime() retrieving} the {@link GraalRuntime} instance of the 38 * system compiler from unit tests. 39 */ 40 public class Graal { 41 42 private static final GraalRuntime runtime = initializeRuntime(); 43 44 private static GraalRuntime initializeRuntime() { 45 Services.initializeJVMCI(); 46 JVMCICompiler compiler = JVMCI.getRuntime().getCompiler(); 47 if (compiler instanceof GraalJVMCICompiler) { 48 GraalJVMCICompiler graal = (GraalJVMCICompiler) compiler; 49 return graal.getGraalRuntime(); 50 } else { 51 return new InvalidGraalRuntime(); 52 } 53 } 54 55 /** 56 * Gets the singleton {@link GraalRuntime} instance available to unit tests. 57 */ 58 public static GraalRuntime getRuntime() { 59 return runtime; 60 } 61 62 /** 63 * Gets a capability provided by the {@link GraalRuntime} instance available to the application. 64 * 65 * @throws UnsupportedOperationException if the capability is not available 66 */ 67 public static <T> T getRequiredCapability(Class<T> clazz) { 68 T t = getRuntime().getCapability(clazz); 69 if (t == null) { 70 String javaHome = System.getProperty("java.home"); 71 String vmName = System.getProperty("java.vm.name"); 72 Formatter errorMessage = new Formatter(); 73 if (getRuntime().getClass() == InvalidGraalRuntime.class) { 74 errorMessage.format("The VM does not support the Graal API.%n"); 75 } else { 76 errorMessage.format("The VM does not expose required Graal capability %s.%n", clazz.getName()); 77 } 78 errorMessage.format("Currently used Java home directory is %s.%n", javaHome); 79 errorMessage.format("Currently used VM configuration is: %s", vmName); 80 throw new UnsupportedOperationException(errorMessage.toString()); 81 } 82 return t; 83 } 84 85 private static final class InvalidGraalRuntime implements GraalRuntime { 86 87 @Override 88 public String getName() { 89 return ""; 90 } 91 92 @Override 93 public <T> T getCapability(Class<T> clazz) { 94 return null; 95 } 96 } 97 }