| | | 1 | | // Copyright (c) Microsoft Corporation. All rights reserved. |
| | | 2 | | // Licensed under the MIT License. See License.txt in the project root for license information. |
| | | 3 | | |
| | | 4 | | using System; |
| | | 5 | | using System.Collections; |
| | | 6 | | using System.Collections.Generic; |
| | | 7 | | using System.Collections.ObjectModel; |
| | | 8 | | |
| | | 9 | | namespace Microsoft.Azure.Batch |
| | | 10 | | { |
| | | 11 | | internal class ConcurrentChangeTrackedList<T> : IList<T>, IPropertyMetadata, IReadOnlyList<T> |
| | | 12 | | { |
| | | 13 | | protected readonly IList<T> _list; |
| | 16294 | 14 | | protected readonly object _listLock = new object(); |
| | | 15 | | |
| | | 16 | | protected bool _hasBeenModified = false; |
| | | 17 | | |
| | 2 | 18 | | public ConcurrentChangeTrackedList() |
| | | 19 | | { |
| | 2 | 20 | | this._list = new List<T>(); |
| | 2 | 21 | | this.IsReadOnly = false; |
| | 2 | 22 | | } |
| | | 23 | | |
| | 16292 | 24 | | public ConcurrentChangeTrackedList(IEnumerable<T> other, bool isReadOnly = false) |
| | | 25 | | { |
| | 16292 | 26 | | this._list = new List<T>(); |
| | | 27 | | |
| | 179382 | 28 | | foreach (T item in other) |
| | | 29 | | { |
| | 73399 | 30 | | this._list.Add(item); |
| | | 31 | | } |
| | 16292 | 32 | | this.IsReadOnly = isReadOnly; |
| | 16292 | 33 | | } |
| | | 34 | | |
| | | 35 | | #region IPropertyMetadata |
| | | 36 | | |
| | | 37 | | public virtual bool HasBeenModified |
| | | 38 | | { |
| | | 39 | | get |
| | | 40 | | { |
| | 3 | 41 | | lock (this._listLock) |
| | | 42 | | { |
| | 3 | 43 | | return this._hasBeenModified; |
| | | 44 | | } |
| | 3 | 45 | | } |
| | | 46 | | } |
| | | 47 | | |
| | 24956 | 48 | | public virtual bool IsReadOnly { get; set; } |
| | | 49 | | |
| | | 50 | | #endregion |
| | | 51 | | |
| | | 52 | | #region IEnumerable<T> |
| | | 53 | | |
| | | 54 | | public IEnumerator<T> GetEnumerator() |
| | | 55 | | { |
| | 42504 | 56 | | lock (this._listLock) |
| | | 57 | | { |
| | | 58 | | //Clone the list for enumeration -- this is best for "small" lists. If dealing with larger lists, we sh |
| | 42504 | 59 | | IReadOnlyList<T> copy = new List<T>(this._list); |
| | 42504 | 60 | | return copy.GetEnumerator(); |
| | | 61 | | } |
| | 42504 | 62 | | } |
| | | 63 | | |
| | | 64 | | #endregion |
| | | 65 | | |
| | | 66 | | #region IEnumerable |
| | | 67 | | |
| | | 68 | | IEnumerator IEnumerable.GetEnumerator() |
| | | 69 | | { |
| | 2 | 70 | | return this.GetEnumerator(); |
| | | 71 | | } |
| | | 72 | | |
| | | 73 | | #endregion |
| | | 74 | | |
| | | 75 | | #region IList |
| | | 76 | | |
| | | 77 | | public void Add(T item) |
| | | 78 | | { |
| | 61 | 79 | | this.ThrowOnReadOnly(); |
| | | 80 | | |
| | 58 | 81 | | lock (this._listLock) |
| | | 82 | | { |
| | 58 | 83 | | this._list.Add(item); |
| | 58 | 84 | | this._hasBeenModified = true; |
| | 58 | 85 | | } |
| | 58 | 86 | | } |
| | | 87 | | |
| | | 88 | | public void Clear() |
| | | 89 | | { |
| | 1 | 90 | | this.ThrowOnReadOnly(); |
| | | 91 | | |
| | 1 | 92 | | lock (this._listLock) |
| | | 93 | | { |
| | 1 | 94 | | this._list.Clear(); |
| | 1 | 95 | | this._hasBeenModified = true; |
| | 1 | 96 | | } |
| | 1 | 97 | | } |
| | | 98 | | |
| | | 99 | | public bool Contains(T item) |
| | | 100 | | { |
| | 1 | 101 | | lock (this._listLock) |
| | | 102 | | { |
| | 1 | 103 | | bool contains = this._list.Contains(item); |
| | 1 | 104 | | return contains; |
| | | 105 | | } |
| | 1 | 106 | | } |
| | | 107 | | |
| | | 108 | | public void CopyTo(T[] array, int arrayIndex) |
| | | 109 | | { |
| | 0 | 110 | | lock (this._listLock) |
| | | 111 | | { |
| | 0 | 112 | | this._list.CopyTo(array, arrayIndex); |
| | 0 | 113 | | } |
| | 0 | 114 | | } |
| | | 115 | | |
| | | 116 | | public bool Remove(T item) |
| | | 117 | | { |
| | 1 | 118 | | this.ThrowOnReadOnly(); |
| | | 119 | | |
| | 1 | 120 | | lock (this._listLock) |
| | | 121 | | { |
| | 1 | 122 | | bool result = this._list.Remove(item); |
| | 1 | 123 | | this._hasBeenModified = true; |
| | 1 | 124 | | return result; |
| | | 125 | | } |
| | 1 | 126 | | } |
| | | 127 | | |
| | | 128 | | public int Count |
| | | 129 | | { |
| | | 130 | | get |
| | | 131 | | { |
| | 33 | 132 | | lock (this._listLock) |
| | | 133 | | { |
| | 33 | 134 | | int count = this._list.Count; |
| | 33 | 135 | | return count; |
| | | 136 | | } |
| | 33 | 137 | | } |
| | | 138 | | } |
| | | 139 | | |
| | | 140 | | public int IndexOf(T item) |
| | | 141 | | { |
| | 1 | 142 | | lock (this._listLock) |
| | | 143 | | { |
| | 1 | 144 | | int index = this._list.IndexOf(item); |
| | 1 | 145 | | return index; |
| | | 146 | | } |
| | 1 | 147 | | } |
| | | 148 | | |
| | | 149 | | public void Insert(int index, T item) |
| | | 150 | | { |
| | 0 | 151 | | this.ThrowOnReadOnly(); |
| | | 152 | | |
| | 0 | 153 | | lock (this._listLock) |
| | | 154 | | { |
| | 0 | 155 | | this._list.Insert(index, item); |
| | 0 | 156 | | this._hasBeenModified = true; |
| | 0 | 157 | | } |
| | 0 | 158 | | } |
| | | 159 | | |
| | | 160 | | public void RemoveAt(int index) |
| | | 161 | | { |
| | 48 | 162 | | this.ThrowOnReadOnly(); |
| | | 163 | | |
| | 48 | 164 | | lock (this._listLock) |
| | | 165 | | { |
| | 48 | 166 | | this._list.RemoveAt(index); |
| | 41 | 167 | | this._hasBeenModified = true; |
| | 41 | 168 | | } |
| | 41 | 169 | | } |
| | | 170 | | |
| | | 171 | | public T this[int index] |
| | | 172 | | { |
| | | 173 | | get |
| | | 174 | | { |
| | 37 | 175 | | lock (this._listLock) |
| | | 176 | | { |
| | 37 | 177 | | T result = this._list[index]; |
| | 37 | 178 | | return result; |
| | | 179 | | } |
| | 37 | 180 | | } |
| | | 181 | | |
| | | 182 | | set |
| | | 183 | | { |
| | 0 | 184 | | this.ThrowOnReadOnly(); |
| | | 185 | | |
| | 0 | 186 | | lock (this._listLock) |
| | | 187 | | { |
| | 0 | 188 | | this._list[index] = value; |
| | 0 | 189 | | this._hasBeenModified = true; |
| | 0 | 190 | | } |
| | 0 | 191 | | } |
| | | 192 | | } |
| | | 193 | | |
| | | 194 | | #endregion |
| | | 195 | | |
| | | 196 | | public void AddRange(IEnumerable<T> items) |
| | | 197 | | { |
| | 0 | 198 | | this.ThrowOnReadOnly(); |
| | | 199 | | |
| | 0 | 200 | | lock (this._listLock) |
| | | 201 | | { |
| | 0 | 202 | | foreach (T item in items) |
| | | 203 | | { |
| | 0 | 204 | | this._list.Add(item); |
| | | 205 | | } |
| | | 206 | | } |
| | 0 | 207 | | } |
| | | 208 | | |
| | | 209 | | public IReadOnlyList<T> AsReadOnly() |
| | | 210 | | { |
| | | 211 | | //As per http://msdn.microsoft.com/en-us/library/ms132474%28v=vs.110%29.aspx this is a wrapper around the co |
| | | 212 | | //will reflect any changes made to the underlying list |
| | 1 | 213 | | return new ReadOnlyCollection<T>(this._list); |
| | | 214 | | } |
| | | 215 | | |
| | | 216 | | public static ConcurrentChangeTrackedList<T> TransformEnumerableToConcurrentList(IEnumerable<T> enumerable) |
| | | 217 | | { |
| | 428 | 218 | | if (enumerable == null) |
| | | 219 | | { |
| | 5 | 220 | | return null; |
| | | 221 | | } |
| | | 222 | | |
| | 423 | 223 | | ConcurrentChangeTrackedList<T> list = new ConcurrentChangeTrackedList<T>(enumerable); |
| | 423 | 224 | | return list; |
| | | 225 | | } |
| | | 226 | | |
| | | 227 | | #region Private helpers |
| | | 228 | | |
| | | 229 | | private void ThrowOnReadOnly() |
| | | 230 | | { |
| | 111 | 231 | | if (this.IsReadOnly) |
| | | 232 | | { |
| | 3 | 233 | | throw new InvalidOperationException(BatchErrorMessages.GeneralObjectInInvalidState); |
| | | 234 | | } |
| | 108 | 235 | | } |
| | | 236 | | |
| | | 237 | | #endregion |
| | | 238 | | |
| | | 239 | | } |
| | | 240 | | |
| | | 241 | | internal sealed class ConcurrentChangeTrackedModifiableList<T> : ConcurrentChangeTrackedList<T> where T : IPropertyM |
| | | 242 | | { |
| | | 243 | | public ConcurrentChangeTrackedModifiableList() |
| | | 244 | | { |
| | | 245 | | } |
| | | 246 | | |
| | | 247 | | public ConcurrentChangeTrackedModifiableList(IEnumerable<T> other, bool isReadOnly = false) : base(other, isRead |
| | | 248 | | { |
| | | 249 | | } |
| | | 250 | | |
| | | 251 | | #region IModifiable |
| | | 252 | | |
| | | 253 | | public override bool HasBeenModified |
| | | 254 | | { |
| | | 255 | | get |
| | | 256 | | { |
| | | 257 | | lock (this._listLock) |
| | | 258 | | { |
| | | 259 | | //Check to see if this object has been modified |
| | | 260 | | if (this._hasBeenModified) |
| | | 261 | | { |
| | | 262 | | return true; |
| | | 263 | | } |
| | | 264 | | |
| | | 265 | | //Check to see if the children objects have been modified |
| | | 266 | | foreach (T item in this._list) |
| | | 267 | | { |
| | | 268 | | if (item != null && item.HasBeenModified) |
| | | 269 | | { |
| | | 270 | | return true; |
| | | 271 | | } |
| | | 272 | | } |
| | | 273 | | |
| | | 274 | | return false; |
| | | 275 | | } |
| | | 276 | | } |
| | | 277 | | } |
| | | 278 | | |
| | | 279 | | public override bool IsReadOnly |
| | | 280 | | { |
| | | 281 | | get |
| | | 282 | | { |
| | | 283 | | return base.IsReadOnly; |
| | | 284 | | } |
| | | 285 | | set |
| | | 286 | | { |
| | | 287 | | base.IsReadOnly = value; |
| | | 288 | | foreach (T readOnlyItem in this) |
| | | 289 | | { |
| | | 290 | | if (readOnlyItem != null) |
| | | 291 | | { |
| | | 292 | | readOnlyItem.IsReadOnly = value; |
| | | 293 | | } |
| | | 294 | | } |
| | | 295 | | } |
| | | 296 | | } |
| | | 297 | | |
| | | 298 | | #endregion |
| | | 299 | | |
| | | 300 | | public static ConcurrentChangeTrackedModifiableList<T> TransformEnumerableToConcurrentModifiableList(IEnumerable |
| | | 301 | | { |
| | | 302 | | if (enumerable == null) |
| | | 303 | | { |
| | | 304 | | return null; |
| | | 305 | | } |
| | | 306 | | |
| | | 307 | | ConcurrentChangeTrackedModifiableList<T> list = new ConcurrentChangeTrackedModifiableList<T>(enumerable); |
| | | 308 | | return list; |
| | | 309 | | } |
| | | 310 | | } |
| | | 311 | | } |