1 /* 2 * Copyright (c) 2015, 2016, 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; 24 25 import java.lang.reflect.Module; 26 27 import jdk.vm.ci.code.CompilationRequest; 28 import jdk.vm.ci.code.CompilationRequestResult; 29 import jdk.vm.ci.common.JVMCIError; 30 import jdk.vm.ci.hotspot.HotSpotJVMCIRuntime.Option; 31 import jdk.vm.ci.runtime.JVMCICompiler; 32 import jdk.vm.ci.runtime.JVMCIRuntime; 33 import jdk.vm.ci.runtime.services.JVMCICompilerFactory; 34 import jdk.vm.ci.services.Services; 35 36 final class HotSpotJVMCICompilerConfig { 37 38 private static class DummyCompilerFactory extends JVMCICompilerFactory implements JVMCICompiler { 39 40 public CompilationRequestResult compileMethod(CompilationRequest request) { 41 throw new JVMCIError("no JVMCI compiler selected"); 42 } 43 44 @Override 45 public String getCompilerName() { 46 return "<none>"; 47 } 48 49 @Override 50 public JVMCICompiler createCompiler(JVMCIRuntime runtime) { 51 return this; 52 } 53 } 54 55 /** 56 * Factory of the selected system compiler. 57 */ 58 private static JVMCICompilerFactory compilerFactory; 59 60 /** 61 * Gets the selected system compiler factory. 62 * 63 * @return the selected system compiler factory 64 */ 65 static JVMCICompilerFactory getCompilerFactory() { 66 if (compilerFactory == null) { 67 JVMCICompilerFactory factory = null; 68 String compilerName = Option.Compiler.getString(); 69 if (compilerName != null) { 70 for (JVMCICompilerFactory f : Services.load(JVMCICompilerFactory.class)) { 71 if (f.getCompilerName().equals(compilerName)) { 72 Module jvmciModule = JVMCICompilerFactory.class.getModule(); 73 Services.exportJVMCITo(f.getClass()); 74 f.onSelection(); 75 factory = f; 76 } 77 } 78 if (factory == null) { 79 throw new JVMCIError("JVMCI compiler '%s' not found", compilerName); 80 } 81 } else { 82 factory = new DummyCompilerFactory(); 83 } 84 compilerFactory = factory; 85 } 86 return compilerFactory; 87 } 88 }