/NRefactory/ICSharpCode.NRefactory/Utils/CacheManager.cs
http://github.com/icsharpcode/ILSpy · C# · 59 lines · 29 code · 6 blank · 24 comment · 0 complexity · c6cd6edd60a60b524b7efdec3ea268f5 MD5 · raw file
- // Copyright (c) 2010-2013 AlphaSierraPapa for the SharpDevelop Team
- //
- // Permission is hereby granted, free of charge, to any person obtaining a copy of this
- // software and associated documentation files (the "Software"), to deal in the Software
- // without restriction, including without limitation the rights to use, copy, modify, merge,
- // publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
- // to whom the Software is furnished to do so, subject to the following conditions:
- //
- // The above copyright notice and this permission notice shall be included in all copies or
- // substantial portions of the Software.
- //
- // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
- // INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
- // PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
- // FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
- // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- // DEALINGS IN THE SOFTWARE.
- using System;
- using System.Collections.Concurrent;
- using System.Collections.Generic;
- using System.Threading;
- namespace ICSharpCode.NRefactory.Utils
- {
- /// <summary>
- /// Allows caching values for a specific compilation.
- /// A CacheManager consists of a for shared instances (shared among all threads working with that resolve context).
- /// </summary>
- /// <remarks>This class is thread-safe</remarks>
- public sealed class CacheManager
- {
- readonly ConcurrentDictionary<object, object> sharedDict = new ConcurrentDictionary<object, object>(ReferenceComparer.Instance);
- // There used to be a thread-local dictionary here, but I removed it as it was causing memory
- // leaks in some use cases.
-
- public object GetShared(object key)
- {
- object value;
- sharedDict.TryGetValue(key, out value);
- return value;
- }
-
- public object GetOrAddShared(object key, Func<object, object> valueFactory)
- {
- return sharedDict.GetOrAdd(key, valueFactory);
- }
-
- public object GetOrAddShared(object key, object value)
- {
- return sharedDict.GetOrAdd(key, value);
- }
-
- public void SetShared(object key, object value)
- {
- sharedDict[key] = value;
- }
- }
- }