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 24 25 package org.graalvm.compiler.hotspot; 26 27 import org.graalvm.compiler.serviceprovider.ServiceProvider; 28 29 import jdk.vm.ci.hotspot.HotSpotVMEventListener; 30 import jdk.vm.ci.runtime.JVMCICompilerFactory; 31 import jdk.vm.ci.services.JVMCIServiceLocator; 32 33 @ServiceProvider(JVMCIServiceLocator.class) 34 public final class HotSpotGraalJVMCIServiceLocator extends JVMCIServiceLocator { 35 36 /** 37 * Holds the state shared between all {@link HotSpotGraalJVMCIServiceLocator} instances. This is 38 * necessary as a service provider instance is created each time the service is loaded. 39 */ 40 private static final class Shared { 41 static final Shared SINGLETON = new Shared(); 42 getProvider(Class<T> service, HotSpotGraalJVMCIServiceLocator locator)43 <T> T getProvider(Class<T> service, HotSpotGraalJVMCIServiceLocator locator) { 44 if (service == JVMCICompilerFactory.class) { 45 return service.cast(new HotSpotGraalCompilerFactory(locator)); 46 } else if (service == HotSpotVMEventListener.class) { 47 if (graalRuntime != null) { 48 return service.cast(new HotSpotGraalVMEventListener(graalRuntime)); 49 } 50 } 51 return null; 52 } 53 54 private HotSpotGraalRuntime graalRuntime; 55 56 /** 57 * Notifies this object of the compiler created via {@link HotSpotGraalJVMCIServiceLocator}. 58 */ onCompilerCreation(HotSpotGraalCompiler compiler)59 void onCompilerCreation(HotSpotGraalCompiler compiler) { 60 assert this.graalRuntime == null : "only expect a single JVMCICompiler to be created"; 61 this.graalRuntime = (HotSpotGraalRuntime) compiler.getGraalRuntime(); 62 } 63 } 64 65 @Override getProvider(Class<T> service)66 public <T> T getProvider(Class<T> service) { 67 return Shared.SINGLETON.getProvider(service, this); 68 } 69 70 /** 71 * Notifies this object of the compiler created via {@link HotSpotGraalJVMCIServiceLocator}. 72 */ 73 @SuppressWarnings("static-method") onCompilerCreation(HotSpotGraalCompiler compiler)74 void onCompilerCreation(HotSpotGraalCompiler compiler) { 75 Shared.SINGLETON.onCompilerCreation(compiler); 76 } 77 } 78