1 /* 2 * Copyright (c) 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 */ 23 package jdk.vm.ci.hotspot; 24 25 import jdk.vm.ci.code.CompilationRequest; 26 import jdk.vm.ci.common.JVMCIError; 27 import jdk.vm.ci.runtime.JVMCICompiler; 28 import jdk.vm.ci.runtime.JVMCICompilerFactory; 29 import jdk.vm.ci.runtime.JVMCIRuntime; 30 import jdk.vm.ci.service.Services; 31 32 final class HotSpotJVMCICompilerConfig { 33 34 private static class DummyCompilerFactory implements JVMCICompilerFactory, JVMCICompiler { 35 36 public void compileMethod(CompilationRequest request) { 37 throw new JVMCIError("no JVMCI compiler selected"); 38 } 39 40 public String getCompilerName() { 41 return "<none>"; 42 } 43 44 public JVMCICompiler createCompiler(JVMCIRuntime runtime) { 45 return this; 46 } 47 } 48 49 private static JVMCICompilerFactory compilerFactory; 50 51 /** 52 * Selects the system compiler. 53 * 54 * Called from VM. This method has an object return type to allow it to be called with a VM 55 * utility function used to call other static initialization methods. 56 */ 57 static Boolean selectCompiler(String compilerName) { 58 assert compilerFactory == null; 59 for (JVMCICompilerFactory factory : Services.load(JVMCICompilerFactory.class)) { 60 if (factory.getCompilerName().equals(compilerName)) { 61 compilerFactory = factory; 62 return Boolean.TRUE; 63 } 64 } 65 66 throw new JVMCIError("JVMCI compiler '%s' not found", compilerName); 67 } 68 69 static JVMCICompilerFactory getCompilerFactory() { 70 if (compilerFactory == null) { 71 compilerFactory = new DummyCompilerFactory(); 72 } 73 return compilerFactory; 74 } 75 }