1/* 2 * Copyright (c) 2012, 2015, 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 */ 23package org.graalvm.compiler.api.test; 24 25import java.util.Formatter; 26 27import jdk.vm.ci.runtime.JVMCI; 28import jdk.vm.ci.runtime.JVMCICompiler; 29import jdk.vm.ci.services.Services; 30 31import org.graalvm.compiler.api.runtime.GraalJVMCICompiler; 32import org.graalvm.compiler.api.runtime.GraalRuntime; 33 34/** 35 * Access point for {@linkplain #getRuntime() retrieving} the {@link GraalRuntime} instance of the 36 * system compiler from unit tests. 37 */ 38public class Graal { 39 40 private static final GraalRuntime runtime = initializeRuntime(); 41 42 private static GraalRuntime initializeRuntime() { 43 Services.initializeJVMCI(); 44 JVMCICompiler compiler = JVMCI.getRuntime().getCompiler(); 45 if (compiler instanceof GraalJVMCICompiler) { 46 GraalJVMCICompiler graal = (GraalJVMCICompiler) compiler; 47 return graal.getGraalRuntime(); 48 } else { 49 return new InvalidGraalRuntime(); 50 } 51 } 52 53 /** 54 * Gets the singleton {@link GraalRuntime} instance available to unit tests. 55 */ 56 public static GraalRuntime getRuntime() { 57 return runtime; 58 } 59 60 /** 61 * Gets a capability provided by the {@link GraalRuntime} instance available to the application. 62 * 63 * @throws UnsupportedOperationException if the capability is not available 64 */ 65 public static <T> T getRequiredCapability(Class<T> clazz) { 66 T t = getRuntime().getCapability(clazz); 67 if (t == null) { 68 String javaHome = System.getProperty("java.home"); 69 String vmName = System.getProperty("java.vm.name"); 70 Formatter errorMessage = new Formatter(); 71 if (getRuntime().getClass() == InvalidGraalRuntime.class) { 72 errorMessage.format("The VM does not support the Graal API.%n"); 73 } else { 74 errorMessage.format("The VM does not expose required Graal capability %s.%n", clazz.getName()); 75 } 76 errorMessage.format("Currently used Java home directory is %s.%n", javaHome); 77 errorMessage.format("Currently used VM configuration is: %s", vmName); 78 throw new UnsupportedOperationException(errorMessage.toString()); 79 } 80 return t; 81 } 82 83 private static final class InvalidGraalRuntime implements GraalRuntime { 84 85 @Override 86 public String getName() { 87 return ""; 88 } 89 90 @Override 91 public <T> T getCapability(Class<T> clazz) { 92 return null; 93 } 94 } 95} 96