| | | 1 | | // Licensed to the .NET Foundation under one or more agreements. |
| | | 2 | | // The .NET Foundation licenses this file to you under the MIT license. |
| | | 3 | | |
| | | 4 | | using System; |
| | | 5 | | using System.Xml; |
| | | 6 | | using CoreWCF.Runtime; |
| | | 7 | | |
| | | 8 | | namespace CoreWCF.Channels |
| | | 9 | | { |
| | | 10 | | internal abstract class BufferedMessageData : IBufferedMessageData |
| | | 11 | | { |
| | | 12 | | private ArraySegment<byte> _buffer; |
| | | 13 | | private int _refCount; |
| | | 14 | | private int _outstandingReaders; |
| | | 15 | | private bool _multipleUsers; |
| | | 16 | | private RecycledMessageState _messageState; |
| | | 17 | | private readonly SynchronizedPool<RecycledMessageState> _messageStatePool; |
| | | 18 | | |
| | 6 | 19 | | public BufferedMessageData(SynchronizedPool<RecycledMessageState> messageStatePool) |
| | | 20 | | { |
| | 6 | 21 | | _messageStatePool = messageStatePool; |
| | 6 | 22 | | } |
| | | 23 | | |
| | 6 | 24 | | public ArraySegment<byte> Buffer => _buffer; |
| | | 25 | | |
| | 10 | 26 | | public BufferManager BufferManager { get; private set; } |
| | | 27 | | |
| | 0 | 28 | | public virtual XmlDictionaryReaderQuotas Quotas => XmlDictionaryReaderQuotas.Max; |
| | | 29 | | |
| | | 30 | | public abstract MessageEncoder MessageEncoder { get; } |
| | | 31 | | |
| | 0 | 32 | | private object ThisLock => this; |
| | | 33 | | |
| | | 34 | | public void EnableMultipleUsers() |
| | | 35 | | { |
| | 0 | 36 | | _multipleUsers = true; |
| | 0 | 37 | | } |
| | | 38 | | |
| | | 39 | | public void Close() |
| | | 40 | | { |
| | 4 | 41 | | if (_multipleUsers) |
| | | 42 | | { |
| | 0 | 43 | | lock (ThisLock) |
| | | 44 | | { |
| | 0 | 45 | | if (--_refCount == 0) |
| | | 46 | | { |
| | 0 | 47 | | DoClose(); |
| | | 48 | | } |
| | 0 | 49 | | } |
| | | 50 | | } |
| | | 51 | | else |
| | | 52 | | { |
| | 4 | 53 | | DoClose(); |
| | | 54 | | } |
| | 4 | 55 | | } |
| | | 56 | | |
| | | 57 | | private void DoClose() |
| | | 58 | | { |
| | 4 | 59 | | BufferManager.ReturnBuffer(_buffer.Array); |
| | 4 | 60 | | if (_outstandingReaders == 0) |
| | | 61 | | { |
| | 0 | 62 | | BufferManager = null; |
| | 0 | 63 | | _buffer = new ArraySegment<byte>(); |
| | 0 | 64 | | OnClosed(); |
| | | 65 | | } |
| | 4 | 66 | | } |
| | | 67 | | |
| | | 68 | | public void DoReturnMessageState(RecycledMessageState messageState) |
| | | 69 | | { |
| | 4 | 70 | | if (_messageState == null) |
| | | 71 | | { |
| | 4 | 72 | | _messageState = messageState; |
| | | 73 | | } |
| | | 74 | | else |
| | | 75 | | { |
| | 0 | 76 | | _messageStatePool.Return(messageState); |
| | | 77 | | } |
| | 0 | 78 | | } |
| | | 79 | | |
| | | 80 | | private void DoReturnXmlReader(XmlDictionaryReader reader) |
| | | 81 | | { |
| | 0 | 82 | | ReturnXmlReader(reader); |
| | 0 | 83 | | _outstandingReaders--; |
| | 0 | 84 | | } |
| | | 85 | | |
| | | 86 | | public RecycledMessageState DoTakeMessageState() |
| | | 87 | | { |
| | 6 | 88 | | RecycledMessageState messageState = _messageState; |
| | 6 | 89 | | if (messageState != null) |
| | | 90 | | { |
| | 0 | 91 | | _messageState = null; |
| | 0 | 92 | | return messageState; |
| | | 93 | | } |
| | | 94 | | else |
| | | 95 | | { |
| | 6 | 96 | | return _messageStatePool.Take(); |
| | | 97 | | } |
| | | 98 | | } |
| | | 99 | | |
| | | 100 | | private XmlDictionaryReader DoTakeXmlReader() |
| | | 101 | | { |
| | 6 | 102 | | XmlDictionaryReader reader = TakeXmlReader(); |
| | 6 | 103 | | _outstandingReaders++; |
| | | 104 | | |
| | 6 | 105 | | return reader; |
| | | 106 | | } |
| | | 107 | | |
| | | 108 | | public XmlDictionaryReader GetMessageReader() |
| | | 109 | | { |
| | 6 | 110 | | if (_multipleUsers) |
| | | 111 | | { |
| | 0 | 112 | | lock (ThisLock) |
| | | 113 | | { |
| | 0 | 114 | | return DoTakeXmlReader(); |
| | | 115 | | } |
| | | 116 | | } |
| | | 117 | | else |
| | | 118 | | { |
| | 6 | 119 | | return DoTakeXmlReader(); |
| | | 120 | | } |
| | 0 | 121 | | } |
| | | 122 | | |
| | | 123 | | public void OnXmlReaderClosed(XmlDictionaryReader reader) |
| | | 124 | | { |
| | 0 | 125 | | if (_multipleUsers) |
| | | 126 | | { |
| | 0 | 127 | | lock (ThisLock) |
| | | 128 | | { |
| | 0 | 129 | | DoReturnXmlReader(reader); |
| | 0 | 130 | | } |
| | | 131 | | } |
| | | 132 | | else |
| | | 133 | | { |
| | 0 | 134 | | DoReturnXmlReader(reader); |
| | | 135 | | } |
| | 0 | 136 | | } |
| | | 137 | | |
| | | 138 | | protected virtual void OnClosed() |
| | | 139 | | { |
| | 0 | 140 | | } |
| | | 141 | | |
| | | 142 | | public RecycledMessageState TakeMessageState() |
| | | 143 | | { |
| | 6 | 144 | | if (_multipleUsers) |
| | | 145 | | { |
| | 0 | 146 | | lock (ThisLock) |
| | | 147 | | { |
| | 0 | 148 | | return DoTakeMessageState(); |
| | | 149 | | } |
| | | 150 | | } |
| | | 151 | | else |
| | | 152 | | { |
| | 6 | 153 | | return DoTakeMessageState(); |
| | | 154 | | } |
| | 0 | 155 | | } |
| | | 156 | | |
| | | 157 | | protected abstract XmlDictionaryReader TakeXmlReader(); |
| | | 158 | | |
| | | 159 | | public void Open() |
| | | 160 | | { |
| | 0 | 161 | | lock (ThisLock) |
| | | 162 | | { |
| | 0 | 163 | | _refCount++; |
| | 0 | 164 | | } |
| | 0 | 165 | | } |
| | | 166 | | |
| | | 167 | | public void Open(ArraySegment<byte> buffer, BufferManager bufferManager) |
| | | 168 | | { |
| | 6 | 169 | | _refCount = 1; |
| | 6 | 170 | | BufferManager = bufferManager; |
| | 6 | 171 | | _buffer = buffer; |
| | 6 | 172 | | _multipleUsers = false; |
| | 6 | 173 | | } |
| | | 174 | | |
| | | 175 | | protected abstract void ReturnXmlReader(XmlDictionaryReader xmlReader); |
| | | 176 | | |
| | | 177 | | public void ReturnMessageState(RecycledMessageState messageState) |
| | | 178 | | { |
| | 4 | 179 | | if (_multipleUsers) |
| | | 180 | | { |
| | 0 | 181 | | lock (ThisLock) |
| | | 182 | | { |
| | 0 | 183 | | DoReturnMessageState(messageState); |
| | 0 | 184 | | } |
| | | 185 | | } |
| | | 186 | | else |
| | | 187 | | { |
| | 4 | 188 | | DoReturnMessageState(messageState); |
| | | 189 | | } |
| | 4 | 190 | | } |
| | | 191 | | } |
| | | 192 | | } |