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Use ConcurrentDictionary in ImportMap #4148

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Merged
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Dec 22, 2017
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Use ConcurrentDictionary in ImportMap #4148

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3 changes: 2 additions & 1 deletion src/fsharp/import.fs
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@
module internal Microsoft.FSharp.Compiler.Import

open System.Reflection
open System.Collections.Concurrent
open System.Collections.Generic

open Microsoft.FSharp.Compiler.AbstractIL.IL
Expand Down Expand Up @@ -52,7 +53,7 @@ type AssemblyLoader =
/// serves as an interface through to the tables stored in the primary TcImports structures defined in CompileOps.fs.
[<Sealed>]
type ImportMap(g:TcGlobals,assemblyLoader:AssemblyLoader) =
let typeRefToTyconRefCache = new System.Collections.Generic.Dictionary<ILTypeRef,TyconRef>()
let typeRefToTyconRefCache = ConcurrentDictionary<ILTypeRef,TyconRef>()
member this.g = g
member this.assemblyLoader = assemblyLoader
member this.ILTypeRefToTyconRefCache = typeRefToTyconRefCache
Expand Down