| @@ -1,7 +1,10 | |||
|
|
1 | 1 | using System.Threading; |
|
|
2 | using System.Collections.Generic; | |
|
|
3 | using System; | |
|
|
4 | using System.Collections; | |
|
|
2 | 5 | |
|
|
3 | 6 | namespace Implab.Parallels { |
|
|
4 | public class MTQueue<T> { | |
|
|
7 | public class MTQueue<T> : IEnumerable<T> { | |
|
|
5 | 8 | class Node { |
|
|
6 | 9 | public Node(T value) { |
|
|
7 | 10 | this.value = value; |
| @@ -19,6 +22,8 namespace Implab.Parallels { | |||
|
|
19 | 22 | var last = m_last; |
|
|
20 | 23 | var next = new Node(value); |
|
|
21 | 24 | |
|
|
25 | // Interlocaked.CompareExchange implies Thread.MemoryBarrier(); | |
|
|
26 | // to ensure that the next node is completely constructed | |
|
|
22 | 27 | while (last != Interlocked.CompareExchange(ref m_last, next, last)) |
|
|
23 | 28 | last = m_last; |
|
|
24 | 29 | |
| @@ -69,5 +74,70 namespace Implab.Parallels { | |||
|
|
69 | 74 | value = first.value; |
|
|
70 | 75 | return true; |
|
|
71 | 76 | } |
|
|
77 | ||
|
|
78 | #region IEnumerable implementation | |
|
|
79 | ||
|
|
80 | class Enumerator : IEnumerator<T> { | |
|
|
81 | Node m_current; | |
|
|
82 | Node m_first; | |
|
|
83 | ||
|
|
84 | public Enumerator(Node first) { | |
|
|
85 | m_first = first; | |
|
|
86 | } | |
|
|
87 | ||
|
|
88 | #region IEnumerator implementation | |
|
|
89 | ||
|
|
90 | public bool MoveNext() { | |
|
|
91 | m_current = m_current == null ? m_first : m_current.next; | |
|
|
92 | return m_current != null; | |
|
|
93 | } | |
|
|
94 | ||
|
|
95 | public void Reset() { | |
|
|
96 | m_current = null; | |
|
|
97 | } | |
|
|
98 | ||
|
|
99 | public object IEnumerator.Current { | |
|
|
100 | get { | |
|
|
101 | if (m_current == null) | |
|
|
102 | throw new InvalidOperationException(); | |
|
|
103 | return m_current.value; | |
|
|
104 | } | |
|
|
105 | } | |
|
|
106 | ||
|
|
107 | #endregion | |
|
|
108 | ||
|
|
109 | #region IDisposable implementation | |
|
|
110 | ||
|
|
111 | public void Dispose() { | |
|
|
112 | } | |
|
|
113 | ||
|
|
114 | #endregion | |
|
|
115 | ||
|
|
116 | #region IEnumerator implementation | |
|
|
117 | ||
|
|
118 | public T Current { | |
|
|
119 | get { | |
|
|
120 | if (m_current == null) | |
|
|
121 | throw new InvalidOperationException(); | |
|
|
122 | return m_current.value; | |
|
|
123 | } | |
|
|
124 | } | |
|
|
125 | ||
|
|
126 | #endregion | |
|
|
127 | } | |
|
|
128 | ||
|
|
129 | public IEnumerator<T> GetEnumerator() { | |
|
|
130 | return new Enumerator(m_first); | |
|
|
131 | } | |
|
|
132 | ||
|
|
133 | #endregion | |
|
|
134 | ||
|
|
135 | #region IEnumerable implementation | |
|
|
136 | ||
|
|
137 | IEnumerator IEnumerable.GetEnumerator() { | |
|
|
138 | return GetEnumerator(); | |
|
|
139 | } | |
|
|
140 | ||
|
|
141 | #endregion | |
|
|
72 | 142 | } |
|
|
73 | 143 | } |
General Comments 0
You need to be logged in to leave comments.
Login now