Release 4.0.0-preview1-00051
[platform/core/csapi/tizenfx.git] / src / Tizen.Multimedia / Common.Internal / ObjectKeeper.cs
1 /*
2  * Copyright (c) 2016 Samsung Electronics Co., Ltd All Rights Reserved
3  *
4  * Licensed under the Apache License, Version 2.0 (the License);
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an AS IS BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16
17 using System;
18 using System.Runtime.InteropServices;
19
20 namespace Tizen.Multimedia
21 {
22     internal abstract class ObjectKeeper : IDisposable
23     {
24         private ObjectKeeper()
25         {
26         }
27
28         public abstract void Dispose();
29
30         public static ObjectKeeperImpl<T> Get<T>(T target)
31         {
32             return new ObjectKeeperImpl<T>(target);
33         }
34
35         internal class ObjectKeeperImpl<T> : ObjectKeeper
36         {
37             private readonly GCHandle _handle;
38
39             internal ObjectKeeperImpl(T obj)
40             {
41                 Target = obj;
42                 _handle = GCHandle.Alloc(obj);
43             }
44
45             ~ObjectKeeperImpl()
46             {
47                 Dispose(false);
48             }
49
50             private bool disposedValue = false;
51
52             protected virtual void Dispose(bool disposing)
53             {
54                 if (!disposedValue)
55                 {
56                     if (disposing)
57                     {
58                         _handle.Free();
59                     }
60
61                     disposedValue = true;
62                 }
63             }
64
65             public override void Dispose()
66             {
67                 Dispose(true);
68                 GC.SuppressFinalize(this);
69             }
70
71             public T Target
72             {
73                 get;
74             }
75         }
76     }
77 }