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fix bug with double lookup of cache #447

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merged 1 commit into from
Oct 16, 2015
Merged

fix bug with double lookup of cache #447

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6 changes: 3 additions & 3 deletions src/fsharp/InternalCollections.fs
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Original file line number Diff line number Diff line change
Expand Up @@ -63,9 +63,9 @@ type internal AgedLookup<'TKey,'TValue when 'TValue : not struct>(keepStrongly:i

let TryGetKeyValueImpl(data,key) =
match TryPeekKeyValueImpl(data,key) with
| Some(_, value) as result ->
// If the result existed, move it to the top of the list.
result,Promote (data,key,value)
| Some(key', value) as result ->
// If the result existed, move it to the end of the list (more likely to keep it)
result,Promote (data,key',value)
| None -> None,data

/// Remove weak entries from the list that have been collected
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4 changes: 2 additions & 2 deletions src/fsharp/vs/service.fs
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Original file line number Diff line number Diff line change
Expand Up @@ -2354,7 +2354,7 @@ type BackgroundCompiler(projectCacheSize, keepAssemblyContents, keepAllBackgroun
/// Parses the source file and returns untyped AST
member bc.ParseFileInProject(filename:string, source,options:FSharpProjectOptions) =
match locked (fun () -> parseFileInProjectCache.TryGet (filename, source, options)) with
| Some res -> async.Return res
| Some parseResults -> async.Return parseResults
| None ->
// Try this cache too (which might contain different entries)
let cachedResults = locked (fun () -> parseAndCheckFileInProjectCache.TryGet((filename,source,options)))
Expand All @@ -2365,7 +2365,7 @@ type BackgroundCompiler(projectCacheSize, keepAssemblyContents, keepAllBackgroun

// Try the caches again - it may have been filled by the time this operation runs
match locked (fun () -> parseFileInProjectCache.TryGet (filename, source, options)) with
| Some res -> res
| Some parseResults -> parseResults
| None ->
let cachedResults = locked (fun () -> parseAndCheckFileInProjectCache.TryGet((filename,source,options)))
match cachedResults with
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