Implement RawWaker and Waker getters for underlying pointers
#91828
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r? @dtolnay (rust-highfive has picked a reviewer for you, use r? to override) |
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@joshtriplett @tmandry or @cuviper y'all approved of this plan in #87021, this PR lgtm, could one of you take a look and give it the official mark of approval please? |
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LGTM. Seems like what was approved in #87021 (comment) plus the |
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@bors r+ |
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Implement `RawWaker` and `Waker` getters for underlying pointers implement rust-lang#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 rust-lang#91828 (comment), use `as_raw`.
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Implement `RawWaker` and `Waker` getters for underlying pointers implement rust-lang#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 rust-lang#91828 (comment), use `as_raw`.
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Implement `RawWaker` and `Waker` getters for underlying pointers implement rust-lang#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 rust-lang#91828 (comment), use `as_raw`.
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…askrgr Rollup of 7 pull requests Successful merges: - rust-lang#86374 (Enable combining `+crt-static` and `relocation-model=pic` on `x86_64-unknown-linux-gnu`) - rust-lang#91828 (Implement `RawWaker` and `Waker` getters for underlying pointers) - rust-lang#92021 (Eliminate duplicate codes of is_single_fp_element) - rust-lang#92584 (add rustc lint, warning when iterating over hashmaps 2) - rust-lang#93267 (implement a lint for suspicious auto trait impls) - rust-lang#93290 (remove `TyS::same_type`) - rust-lang#93436 (Update compiler_builtins to fix duplicate symbols in `armv7-linux-androideabi` rlib) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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implement #87021
New APIs:
RawWaker::data(&self) -> *const ()RawWaker::vtable(&self) -> &'static RawWakerVTableWaker::as_raw_waker(&self) -> &RawWakerWaker::as_raw(&self) -> &RawWakerThis third one is an auxiliary function to make the two APIs above more useful. Since we can only get
&WakerinFuture::poll, without this, we need totransmuteit into&RawWaker(relying onrepr(transparent)) in order to access its data/vtable pointers.Not sure if it should be namedAs suggested in #91828 (comment), useas_raworas_raw_waker. Seems we always useas_<something-raw>instead of justas_raw. Butas_raw_wakerseems not quite consistent withWaker::from_raw.as_raw.