rust/library/core
Matthias Krüger a643e59800
Rollup merge of #91828 - oxalica:feat/waker-getters, r=dtolnay
Implement `RawWaker` and `Waker` getters for underlying pointers

implement #87021

New APIs:
- `RawWaker::data(&self) -> *const ()`
- `RawWaker::vtable(&self) -> &'static RawWakerVTable`
- ~`Waker::as_raw_waker(&self) -> &RawWaker`~ `Waker::as_raw(&self) -> &RawWaker`

This third one is an auxiliary function to make the two APIs above more useful. Since we can only get `&Waker` in `Future::poll`, without this, we need to `transmute` it into `&RawWaker` (relying on `repr(transparent)`) in order to access its data/vtable pointers.

~Not sure if it should be named `as_raw` or `as_raw_waker`. Seems we always use `as_<something-raw>` instead of just `as_raw`. But `as_raw_waker` seems not quite consistent with `Waker::from_raw`.~ As suggested in https://github.com/rust-lang/rust/pull/91828#discussion_r770729837, use `as_raw`.
2022-02-01 16:08:02 +01:00
..
benches Auto merge of #88788 - falk-hueffner:speedup-int-log10-branchless, r=joshtriplett 2021-10-12 03:18:54 +00:00
primitive_docs Add primitive documentation to libcore 2021-09-12 02:23:08 +00:00
src Rollup merge of #91828 - oxalica:feat/waker-getters, r=dtolnay 2022-02-01 16:08:02 +01:00
tests Rollup merge of #91828 - oxalica:feat/waker-getters, r=dtolnay 2022-02-01 16:08:02 +01:00
Cargo.toml Switch all libraries to the 2021 edition 2021-12-23 19:03:47 +08:00