úÎ0¦  (c) Naoto Shimazaki 2017MIT (see the file LICENSE)https://github.com/nshimaza experimentalSafe:<=3Mutable map containing thread ID and finish marker.{FinishMarker is created as empty MVar when a thread is created. It is automatically filled by () when the thread exits.Create a new empty .-Create a new thread and register it to given .$Kill all thread registered in given ƒ. This version is exposed as API. This is not called from cleanup routine. Thus it doesn't ignore asynchronous exceptions.$Kill all thread registered in given x. This internal version is only called from cleanup routine so this ignores ThreadKilled asynchronous exception.ÎThread clean up routine automatically installed by newChild. It first killThreadHierarchy all its child threads and unregister itself. This function is not an API function but for internal use only. 8ThreadMap where newly created thread will be registered.&Action executed within the new thread.,newChild returns ThreadId of created thread.)ThreadMap containing threads to be killed)ThreadMap containing threads to be killed  (c) Naoto Shimazaki 2017MIT (see the file LICENSE)https://github.com/nshimaza experimentalSafe   /thread-hierarchy-0.2.0.0-ARiTVkYkJwWErXzY3BTnOA$Control.Concurrent.HierarchyInternalControl.Concurrent.Hierarchy ThreadMap FinishMarker newThreadMapnewChildkillThreadHierarchykillThreadHierarchyInternalcleanup$fEqFinishMarker