Function git_tempfile::handler::cleanup_tempfiles

pub fn cleanup_tempfiles()

Remove all tempfiles still registered on our global registry.

Safety

Note that Mutexes of any kind are not allowed, and so aren’t allocation or deallocation of memory. We are using lock-free datastructures and sprinkle in std::mem::forget to avoid deallocating. Most importantly, we use try_lock() which uses an atomic int only without waiting, making our register safe to use, at the expense of possibly missing a lock file if another thread wants to obtain it or put it back (i.e. mutates the register shard).