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.services;
  24 
  25 /**
  26  * An empty implementation for {@link EventProvider}. This implementation is used when no logging is
  27  * requested.
  28  */
  29 final class EmptyEventProvider extends EventProvider {
  30 
  31     EmptyEventProvider() {
  32         super(null);
  33     }
  34 
  35     static InternalError shouldNotReachHere() {
  36         throw new InternalError("should not reach here");
  37     }
  38 
  39     @Override
  40     public CompilationEvent newCompilationEvent() {
  41         return new EmptyCompilationEvent();
  42     }
  43 
  44     static class EmptyCompilationEvent implements CompilationEvent {
  45         public void commit() {
  46             throw shouldNotReachHere();
  47         }
  48 
  49         public boolean shouldWrite() {
  50             // Events of this class should never been written.
  51             return false;
  52         }
  53 

   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 /**
  26  * An empty implementation for {@link EventProvider}. This implementation is used when no logging is
  27  * requested.
  28  */
  29 final class EmptyEventProvider implements EventProvider {




  30 
  31     static InternalError shouldNotReachHere() {
  32         throw new InternalError("should not reach here");
  33     }
  34 
  35     @Override
  36     public CompilationEvent newCompilationEvent() {
  37         return new EmptyCompilationEvent();
  38     }
  39 
  40     static class EmptyCompilationEvent implements CompilationEvent {
  41         public void commit() {
  42             throw shouldNotReachHere();
  43         }
  44 
  45         public boolean shouldWrite() {
  46             // Events of this class should never been written.
  47             return false;
  48         }
  49