Trait package_directory::OnRootDirDrop
source · pub trait OnRootDirDrop: Send + Sync + Debug { }Expand description
RootDir takes an optional OnRootDirDrop value that will be dropped when the RootDir is
dropped.
This is useful because the VFS functions operate on Arc<RootDir>s (and create clones of the
Arcs in response to e.g. Directory::open calls), so this allows clients to perform actions
when the last clone of the Arc<RootDir> is dropped (which is frequently when the last
fuchsia.io connection closes).
The ExecutionScope used to serve the connection could also be used to notice when all the
Arc<RootDir>s are dropped, but only if the Arc<RootDir>s are only used by VFS. Tracking
when the RootDir itself is dropped allows non VFS uses of the Arc<RootDir>s.