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 org.graalvm.compiler.hotspot;
  24 
  25 import static org.graalvm.compiler.core.common.util.ModuleAPI.addExports;
  26 import static org.graalvm.compiler.core.common.util.ModuleAPI.getModule;
  27 import static org.graalvm.compiler.core.common.util.Util.JAVA_SPECIFICATION_VERSION;
  28 
  29 import org.graalvm.compiler.serviceprovider.ServiceProvider;
  30 
  31 import jdk.vm.ci.hotspot.HotSpotVMEventListener;
  32 import jdk.vm.ci.runtime.JVMCICompilerFactory;
  33 import jdk.vm.ci.services.JVMCIServiceLocator;
  34 
  35 @ServiceProvider(JVMCIServiceLocator.class)
  36 public final class HotSpotGraalJVMCIServiceLocator extends JVMCIServiceLocator {
  37 
  38     private boolean exportsAdded;
  39 
  40     /**
  41      * Dynamically exports various internal JDK packages to the Graal module. This requires only
  42      * {@code --add-exports=java.base/jdk.internal.module=org.graalvm.compiler.graal_core} on the VM
  43      * command line instead of a {@code --add-exports} instance for each JDK internal package used
  44      * by Graal.
  45      */
  46     private void addExports() {
  47         if (JAVA_SPECIFICATION_VERSION >= 9 && !exportsAdded) {
  48             Object javaBaseModule = getModule.invoke(String.class);
  49             Object graalModule = getModule.invoke(getClass());
  50             addExports.invokeStatic(javaBaseModule, "jdk.internal.misc", graalModule);
  51             addExports.invokeStatic(javaBaseModule, "jdk.internal.jimage", graalModule);
  52             addExports.invokeStatic(javaBaseModule, "com.sun.crypto.provider", graalModule);
  53             exportsAdded = true;
  54         }
  55     }
  56 
  57     private HotSpotGraalRuntime graalRuntime;
  58 
  59     @Override
  60     public <T> T getProvider(Class<T> service) {
  61         if (service == JVMCICompilerFactory.class) {
  62             addExports();
  63             return service.cast(new HotSpotGraalCompilerFactory(this));
  64         } else if (service == HotSpotVMEventListener.class) {
  65             if (graalRuntime != null) {
  66                 addExports();
  67                 return service.cast(new HotSpotGraalVMEventListener(graalRuntime));
  68             }
  69         }
  70         return null;
  71     }
  72 
  73     public void onCompilerCreation(HotSpotGraalCompiler compiler) {
  74         assert this.graalRuntime == null : "only expect a single JVMCICompiler to be created";
  75         this.graalRuntime = (HotSpotGraalRuntime) compiler.getGraalRuntime();
  76     }
  77 }