1 /*
   2  * Copyright (c) 2011, 2012, 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 package com.apple.jobjc;
  26 
  27 import javax.tools.annotation.GenerateNativeHeader;
  28 
  29 /* No native methods here, but the constants are needed in the supporting JNI code */
  30 @GenerateNativeHeader
  31 public abstract class NativeObjectLifecycleManager {
  32     private static native void retainNativeObject(final long ptr);
  33     private static native void releaseNativeObject(final long ptr);
  34     private static native void freeNativeObject(final long ptr);
  35 
  36     abstract void begin(final long ptr);
  37     abstract void end(final long ptr);
  38     boolean shouldPreRetain() { return false; }
  39 
  40     /* No native methods here, but the constants are needed in the supporting JNI code */
  41     @GenerateNativeHeader
  42     public static class CFRetainRelease extends NativeObjectLifecycleManager {
  43         public static final NativeObjectLifecycleManager INST = new CFRetainRelease();
  44         @Override void begin(final long ptr) { retainNativeObject(ptr); }
  45         @Override void end(final long ptr) { releaseNativeObject(ptr); }
  46         @Override boolean shouldPreRetain() { return true; }
  47     }
  48 
  49     /* No native methods here, but the constants are needed in the supporting JNI code */
  50     @GenerateNativeHeader
  51     public static class Free extends NativeObjectLifecycleManager {
  52         public static final NativeObjectLifecycleManager INST = new Free();
  53         @Override void begin(final long ptr) { }
  54         @Override void end(final long ptr) { freeNativeObject(ptr); }
  55     }
  56 
  57     /* No native methods here, but the constants are needed in the supporting JNI code */
  58     @GenerateNativeHeader
  59     public static class Nothing extends NativeObjectLifecycleManager {
  60         public static final NativeObjectLifecycleManager INST = new Nothing();
  61         @Override void begin(final long ptr) { }
  62         @Override void end(final long ptr) { }
  63     }
  64 }