1 /*
   2  * Copyright (c) 2017, 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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package java.lang;
  27 
  28 import jdk.internal.HotSpotIntrinsicCandidate;
  29 
  30 import java.lang.annotation.Native;
  31 
  32 /**
  33  * TBD
  34  */
  35 public class Continuation {
  36     static {
  37         // registerNatives();
  38     }
  39 
  40     private final Runnable target;
  41     private boolean done;
  42 
  43     /**
  44      * TBD
  45      * @param target TBD
  46      */
  47     public Continuation(Runnable target) {
  48         this.target = target;
  49     }
  50 
  51     /**
  52      * TBD
  53      */
  54     @HotSpotIntrinsicCandidate
  55     public void run() { throw new Error("Intrinsic not installed"); }
  56 
  57     /**
  58      * TBD
  59      */
  60     private void enter() {
  61         target.run();
  62     }
  63 
  64     /**
  65      * TBD
  66      * @return TBD
  67      */
  68     public boolean isDone() {
  69         return done;
  70     }
  71 
  72     /**
  73      * TBD
  74      */
  75     public native void foo();
  76 
  77     // native methods
  78     private static native void registerNatives();
  79 }