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implab » ImplabNet
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Fixed component container
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r216:1e082fb67a46 v2
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1 using System;
1 using System;
2 using System.Collections.Generic;
2 using System.Collections.Generic;
3 using System.Linq;
3 using System.Linq;
4
4
5 namespace Implab.Components {
5 namespace Implab.Components {
6 /// <summary>
6 /// <summary>
7 /// Component container, used to store track components in multi-threaded environmment.
7 /// Component container, used to store track components in multi-threaded environmment.
8 /// </summary>
8 /// </summary>
9 /// <remarks>Instanses of this class are thread safe.</remarks>
9 /// <remarks>Instanses of this class are thread safe.</remarks>
10 public class ComponentContainer<T> : Disposable, ICollection<T> {
10 public class ComponentContainer<T> : Disposable, ICollection<T> {
11 readonly HashSet<T> m_components = new HashSet<T>();
11 List<T> m_components = new List<T>();
12 readonly object m_lock = new object();
12
13
13 /// <summary>
14 /// <summary>
14 /// Removes currently stored compoenents from the container and disposes them if possible.
15 /// Removes currently stored compoenents from the container and disposes them if possible.
15 /// </summary>
16 /// </summary>
16 /// <remarks>
17 /// <remarks>
17 /// A new components may be added before this method completes.
18 /// A new components may be added before this method completes.
18 /// </remarks>
19 /// </remarks>
19 public void Clear() {
20 public void Clear() {
20 T[] removed;
21 List<T> removed;
21
22
22 lock (m_components) {
23 lock (m_lock) {
23 removed = new T[m_components.Count];
24 removed = m_components;
24 m_components.CopyTo(removed);
25 m_components = new List<T>();
25 m_components.Clear();
26 }
26 }
27
27
28 foreach (var item in removed.OfType<IDisposable>())
28 foreach (var item in removed.OfType<IDisposable>())
29 item.Dispose();
29 item.Dispose();
30 }
30 }
31
31
32 /// <summary>
32 /// <summary>
33 /// Checks whether the specified item in the collection.
33 /// Checks whether the specified item in the collection.
34 /// </summary>
34 /// </summary>
35 /// <param name="item">The item to check.</param>
35 /// <param name="item">The item to check.</param>
36 public bool Contains(T item) {
36 public bool Contains(T item) {
37 lock (m_components)
37 lock (m_lock)
38 return m_components.Contains(item);
38 return m_components.Contains(item);
39 }
39 }
40
40
41 /// <summary>
41 /// <summary>
42 /// Copies currently stored components to the specified array.
42 /// Copies currently stored components to the specified array.
43 /// </summary>
43 /// </summary>
44 /// <param name="array">A destination array for components.</param>
44 /// <param name="array">A destination array for components.</param>
45 /// <param name="arrayIndex">A starting index in the destination array.</param>
45 /// <param name="arrayIndex">A starting index in the destination array.</param>
46 public void CopyTo(T[] array, int arrayIndex) {
46 public void CopyTo(T[] array, int arrayIndex) {
47 lock (m_components)
47 lock (m_lock)
48 m_components.CopyTo(array, arrayIndex);
48 m_components.CopyTo(array, arrayIndex);
49 }
49 }
50
50
51 /// <summary>
51 /// <summary>
52 /// Remove the specified item from the collection.
52 /// Remove the specified item from the collection.
53 /// </summary>
53 /// </summary>
54 /// <param name="item">The item to remove.</param>
54 /// <param name="item">The item to remove.</param>
55 public bool Remove(T item) {
55 public bool Remove(T item) {
56 lock (m_components)
56 lock (m_lock)
57 return m_components.Remove(item);
57 return m_components.Remove(item);
58 }
58 }
59
59
60 /// <summary>
60 /// <summary>
61 /// Gets the count of components in the collection.
61 /// Gets the count of components in the collection.
62 /// </summary>
62 /// </summary>
63 public int Count {
63 public int Count {
64 get {
64 get {
65 lock (m_components)
65 lock (m_lock)
66 return m_components.Count;
66 return m_components.Count;
67 }
67 }
68 }
68 }
69
69
70 /// <summary>
70 /// <summary>
71 /// Gets a value indicating whether this instance is read only.
71 /// Gets a value indicating whether this instance is read only.
72 /// </summary>
72 /// </summary>
73 /// <remarks>
73 /// <remarks>
74 /// Always false.
74 /// Always false.
75 /// </remarks>
75 /// </remarks>
76 public bool IsReadOnly {
76 public bool IsReadOnly {
77 get {
77 get {
78 return false;
78 return false;
79 }
79 }
80 }
80 }
81
81
82 /// <summary>
82 /// <summary>
83 /// Gets the enumerator for components in the collection.
83 /// Gets the enumerator for components in the collection.
84 /// </summary>
84 /// </summary>
85 /// <returns>The enumerator.</returns>
85 /// <returns>The enumerator.</returns>
86 public IEnumerator<T> GetEnumerator() {
86 public IEnumerator<T> GetEnumerator() {
87 T[] items;
87 T[] items = new T[m_components.Count];
88 lock (m_components) {
88 lock (m_lock) {
89 items = new T[m_components.Count];
90 m_components.CopyTo(items);
89 m_components.CopyTo(items);
90 }
91 return (IEnumerator<T>)items.GetEnumerator();
91 return (IEnumerator<T>)items.GetEnumerator();
92 }
92 }
93 }
94
93
95 System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() {
94 System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() {
96 return GetEnumerator();
95 return GetEnumerator();
97 }
96 }
98
97
99 /// <summary>
98 /// <summary>
100 /// Add the specified item to the collection.
99 /// Add the specified item to the collection.
101 /// </summary>
100 /// </summary>
102 /// <param name="item">The item to add.</param>
101 /// <param name="item">The item to add.</param>
103 /// <remarks>
102 /// <remarks>
104 /// If the collection is alredy disposed, the item isn't added to the collection and disposed if possible.
103 /// If the collection is alredy disposed, the item isn't added to the collection and disposed if possible.
105 /// </remarks>
104 /// </remarks>
106 public void Add(T item) {
105 public void Add(T item) {
107 Safe.ArgumentNotNull(item, "item");
106 Safe.ArgumentNotNull(item, "item");
108
107 bool dispose = false;
109 lock (m_components) {
108 lock (m_lock) {
110 if (IsDisposed)
109 if (IsDisposed)
111 Safe.Dispose(item);
110 dispose = true;
112 else
111 else
113 m_components.Add(item);
112 m_components.Add(item);
114 }
113 }
114 if (dispose)
115 Safe.Dispose(item);
115 }
116 }
116
117
117 /// <summary>
118 /// <summary>
118 /// Disposes the components stored in the collection.
119 /// Disposes the components stored in the collection.
119 /// </summary>
120 /// </summary>
120 /// <param name="disposing">If set to <c>true</c> the collection is disposing.</param>
121 /// <param name="disposing">If set to <c>true</c> the collection is disposing.</param>
121 protected override void Dispose(bool disposing) {
122 protected override void Dispose(bool disposing) {
123 if (disposing)
124 Clear();
125
122 base.Dispose(disposing);
126 base.Dispose(disposing);
123 Clear();
124 }
127 }
125 }
128 }
126 }
129 }
127
130
General Comments 3
Under Review
sergey
author
Comment #7
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Auto status change to "Under Review"

Approved
sergey
author
Comment #8
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ok, latest stable version should be in default

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