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[FSharp] Move threading utlities to separate file
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,140 @@ | ||
| namespace Aardvark.Base | ||
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| #nowarn "44" | ||
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| open System | ||
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| [<AutoOpen>] | ||
| module Threading = | ||
| open System.Threading | ||
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| /// Please note that Aardvark.Base.FSharp's MVar implementation is different from Haskell's MVar introduced in | ||
| /// "Concurrent Haskell" by Simon Peyton Jones, Andrew Gordon and Sigbjorn Finne. | ||
| /// see also: http://hackage.haskell.org/package/base-4.11.1.0/docs/Control-Concurrent-MVar.html | ||
| /// In our 'wrong' implementation put does not block but overrides the old value. | ||
| /// We use it typically for synchronized sampling use cases. | ||
| type MVar<'a>() = | ||
| let l = obj() | ||
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| let mutable hasValue = false | ||
| let mutable content = Unchecked.defaultof<'a> | ||
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| member x.Put v = | ||
| lock l (fun () -> | ||
| content <- v | ||
| if not hasValue then | ||
| hasValue <- true | ||
| Monitor.PulseAll l | ||
| ) | ||
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| member x.Take () = | ||
| lock l (fun () -> | ||
| while not hasValue do | ||
| Monitor.Wait l |> ignore | ||
| let v = content | ||
| content <- Unchecked.defaultof<_> | ||
| hasValue <- false | ||
| v | ||
| ) | ||
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| [<Obsolete>] | ||
| member x.TakeAsync () = | ||
| async { | ||
| let! ct = Async.CancellationToken | ||
| do! Async.SwitchToThreadPool() | ||
| return x.Take() | ||
| } | ||
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| let startThread (f : unit -> unit) = | ||
| let t = new Thread(ThreadStart f) | ||
| t.IsBackground <- true | ||
| t.Start() | ||
| t | ||
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| [<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>] | ||
| module MVar = | ||
| let empty () = MVar<'a>() | ||
| let create a = | ||
| let v = empty() | ||
| v.Put a | ||
| v | ||
| let put (m : MVar<'a>) v = m.Put v | ||
| let take (m : MVar<'a>) = m.Take() | ||
| [<Obsolete>] | ||
| let takeAsync (m : MVar<'a>) = m.TakeAsync () | ||
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| type Interlocked with | ||
| static member Change(location : byref<'a>, f : 'a -> 'a) = | ||
| let mutable initial = location | ||
| let mutable computed = f initial | ||
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| while Interlocked.CompareExchange(&location, computed, initial) != initial do | ||
| initial <- location | ||
| computed <- f initial | ||
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| computed | ||
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| static member Change(location : byref<'a>, f : 'a -> 'a * 'b) = | ||
| let mutable initial = location | ||
| let (n,r) = f initial | ||
| let mutable computed = n | ||
| let mutable result = r | ||
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| while Interlocked.CompareExchange(&location, computed, initial) != initial do | ||
| initial <- location | ||
| let (n,r) = f initial | ||
| computed <- n | ||
| result <- r | ||
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| result | ||
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| static member Change(location : byref<int>, f : int -> int) = | ||
| let mutable initial = location | ||
| let mutable computed = f initial | ||
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| while Interlocked.CompareExchange(&location, computed, initial) <> initial do | ||
| initial <- location | ||
| computed <- f initial | ||
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| computed | ||
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| static member Change(location : byref<int>, f : int -> int * 'b) = | ||
| let mutable initial = location | ||
| let (n,r) = f initial | ||
| let mutable computed = n | ||
| let mutable result = r | ||
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| while Interlocked.CompareExchange(&location, computed, initial) <> initial do | ||
| initial <- location | ||
| let (n,r) = f initial | ||
| computed <- n | ||
| result <- r | ||
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| result | ||
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| static member Change(location : byref<int64>, f : int64 -> int64) = | ||
| let mutable initial = location | ||
| let mutable computed = f initial | ||
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| while Interlocked.CompareExchange(&location, computed, initial) <> initial do | ||
| initial <- location | ||
| computed <- f initial | ||
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| computed | ||
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| static member Change(location : byref<int64>, f : int64 -> int64 * 'b) = | ||
| let mutable initial = location | ||
| let (n,r) = f initial | ||
| let mutable computed = n | ||
| let mutable result = r | ||
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| while Interlocked.CompareExchange(&location, computed, initial) <> initial do | ||
| initial <- location | ||
| let (n,r) = f initial | ||
| computed <- n | ||
| result <- r | ||
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| result |