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 
  24 package compiler.jvmci.common;
  25 
  26 import jdk.vm.ci.code.Architecture;
  27 import jdk.vm.ci.hotspot.HotSpotVMEventListener;
  28 import jdk.vm.ci.compiler.Compiler;
  29 import jdk.vm.ci.compiler.CompilerFactory;
  30 import jdk.vm.ci.meta.ResolvedJavaMethod;
  31 import jdk.vm.ci.runtime.JVMCIRuntime;
  32 
  33 /*
  34  * A stub classes to be able to use jvmci
  35  */
  36 public class JVMCIHelpers {
  37 
  38     public static class EmptyVMEventListener implements HotSpotVMEventListener {
  39         // just empty, using default interface methods
  40     }
  41 
  42     public static class EmptyHotspotCompiler implements Compiler {
  43 
  44         @Override
  45         public void compileMethod(ResolvedJavaMethod method, int entryBCI,
  46                 long jvmciEnv, int id) {
  47             // do nothing
  48         }
  49     }
  50 
  51     public static class EmptyCompilerFactory implements CompilerFactory {
  52 
  53         @Override
  54         public String getCompilerName() {
  55             return "EmptyCompiler";
  56         }
  57 
  58         @Override
  59         public Architecture initializeArchitecture(Architecture arch) {
  60             return arch;
  61         }
  62 
  63         @Override
  64         public Compiler createCompiler(JVMCIRuntime runtime) {
  65             return new EmptyHotspotCompiler();
  66         }
  67     }
  68 }