2 Commits

Author	SHA1	Message	Date
Alex Crichton	a4b1ac5447	std: Leak all statically allocated TLS keys ... It turns out that rustrt::at_exit() doesn't actually occur after all pthread threads have exited (nor does atexit()), so there's not actually a known point at which we can deallocate these keys. It's not super critical that we do so, however, because we're about to exit anyway! Closes #19280	2014-11-24 15:24:29 -08:00
Alex Crichton	a9c1152c4b	std: Add a new top-level thread_local module ... This commit removes the `std::local_data` module in favor of a new `std::thread_local` module providing thread local storage. The module provides two variants of TLS: one which owns its contents and one which is based on scoped references. Each implementation has pros and cons listed in the documentation. Both flavors have accessors through a function called `with` which yield a reference to a closure provided. Both flavors also panic if a reference cannot be yielded and provide a function to test whether an access would panic or not. This is an implementation of [RFC 461][rfc] and full details can be found in that RFC. This is a breaking change due to the removal of the `std::local_data` module. All users can migrate to the new thread local system like so: thread_local!(static FOO: Rc<RefCell<Option<T>>> = Rc::new(RefCell::new(None))) The old `local_data` module inherently contained the `Rc<RefCell<Option<T>>>` as an implementation detail which must now be explicitly stated by users. [rfc]: https://github.com/rust-lang/rfcs/pull/461 [breaking-change]	2014-11-23 23:37:16 -08:00