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2021-01-07Replace set_data_ptr with pointer::set_ptr_valueCAD97-16/+2
2021-01-07Reclarify Weak<->raw pointer safety commentsCAD97-2/+2
2021-01-07Remove "pointer describes" terminologyCAD97-5/+4
2021-01-07Tighten/clarify documentation of rc data_offsetCAD97-5/+2
2021-01-06Re-stabilize Weak::as_ptr &friends for unsized TCAD97-17/+24
As per T-lang consensus, this uses a branch to handle the dangling case. The discussed optimization of only doing the branch in the T: ?Sized case is left for a followup patch, as doing so is not trivial (as it requires specialization for correctness, not just optimization).
2021-01-01Auto merge of #80310 - Manishearth:box-try-alloc, r=kennytmbors-2/+115
Add fallible Box, Arc, and Rc allocator APIs cc https://github.com/rust-lang/rust/issues/48043 It was suggested in https://github.com/rust-lang/rust/issues/48043#issuecomment-748008486 that `Box::try_*` follows the spirit of RFC 2116. This PR is an attempt to add the relevant APIs, tied to the same feature gate. Happy to make any changes or turn this into an RFC if necessary. cc `@rust-lang/wg-allocators`
2020-12-31More inline, doc fixesManish Goregaokar-1/+1
2020-12-31Make [A]Rc::allocate_for_layout() use try_allocate_for_layout()Manish Goregaokar-11/+2
2020-12-31Add fallible Arc APIs (`Arc::try_new_*`)Manish Goregaokar-0/+122
2020-12-29Do not create dangling &T in Weak<T>::dropCAD97-1/+1
2020-12-28Rollup merge of #80398 - CAD97:fix-80365, r=dtolnayMara Bos-2/+2
Use raw version of align_of in rc data_offset This was missed in #73845 when switching to use the raw operators. Fixes #80365
2020-12-28de-stabilize unsized raw ptr methods for WeakRalf Jung-1/+3
2020-12-26Use raw version of align_of in rc data_offsetCAD97-2/+2
This was missed in #73845 when switching to use the raw operators. Fixes #80365
2020-12-18Stabilize Arc::{incr,decr}_strong_countYoshua Wuyts-11/+7
2020-12-04 Rename `AllocRef` to `Allocator` and `(de)alloc` to `(de)allocate`Tim Diekmann-8/+8
2020-10-28Don't say you "should" use fully qualified syntaxCamelid-5/+8
That recommendation was removed last year; there isn't a particular style that is officially recommended anymore.
2020-10-28Explain fully qualified syntax for `Rc` and `Arc`Camelid-2/+14
2020-10-25Merge remote-tracking branch 'upstream/master' into box-allocTim Diekmann-0/+2
2020-10-23Add a spin loop hint for Arc::downgradeNicolas Nattis-0/+2
2020-10-07Support custom allocators in `Box`Tim Diekmann-2/+2
Remove `Box::leak_with_alloc` Add leak-test for box with allocator Rename `AllocErr` to `AllocError` in leak-test Add `Box::alloc` and adjust examples to use the new API
2020-10-03Auto merge of #74160 - CAD97:weak-as-unsized-ptr, r=RalfJungbors-20/+21
Allow Weak::as_ptr and friends for unsized T Relaxes `impl<T> Weak<T>` to `impl<T: ?Sized> Weak<T>` for the methods `rc::Weak::as_ptr`, `into_raw`, and `from_raw`. Follow-up to #73845, which did most of the impl work to make these functions work for `T: ?Sized`. We still have to adjust the implementation of `Weak::from_raw` here, however, because I missed a use of `ptr.is_null()` previously. This check was necessary when `into`/`from_raw` were first implemented, as `into_raw` returned `ptr::null()` for dangling weak. However, we now just (wrapping) offset dangling weaks' pointers the same as nondangling weak, so the null check is no longer necessary (or even hit). (I can submit just 17a928f as a separate PR if desired.) As a nice side effect, moves the `fn is_dangling` definition closer to `Weak::new`, which creates the dangling weak. This technically stabilizes that "something like `align_of_val_raw`" is possible to do. However, I believe the part of the functionality required by these methods here -- specifically, getting the alignment of a pointee from a pointer where it may be dangling iff the pointee is `Sized` -- is uncontroversial enough to stabilize these methods without a way to implement them on stable Rust. r? `@RalfJung,` who reviewed #73845. ATTN: This changes (relaxes) the (input) generic bounds on stable fn!
2020-10-03grammar nitRalf Jung-1/+1
2020-09-28Rename AllocErr to AllocErrorJacob Hughes-2/+2
2020-09-12Allow Weak::as_ptr and friends for unsized TCAD97-9/+9
2020-09-12Adjust sync::Weak::from_raw to support unsized TCAD97-11/+12
2020-09-02Revert change to MaybeUninit until rustdoc bugs are fixedJoshua Nelson-4/+4
https://github.com/rust-lang/rust/issues/76106
2020-09-02Convert many files to intra-doc linksJoshua Nelson-6/+6
- Use intra-doc links for `std::io` in `std::fs` - Use intra-doc links for File::read in unix/ext/fs.rs - Remove explicit intra-doc links for `true` in `net/addr.rs` - Use intra-doc links in alloc/src/sync.rs - Use intra-doc links in src/ascii.rs - Switch to intra-doc links in alloc/rc.rs - Use intra-doc links in core/pin.rs - Use intra-doc links in std/prelude - Use shorter links in `std/fs.rs` `io` is already in scope.
2020-08-28Add missing hyphenCamelid-1/+1
reference counted pointer -> reference-counted pointer
2020-08-24Auto merge of #75505 - Dylan-DPC:feature/arc_new, r=KodrAusbors-3/+80
Add Arc::new_cyclic Rework of #72443 References #75861 cc @Diggsey @RalfJung r? @KodrAus
2020-08-24add issue numberDylan DPC-1/+1
2020-08-22Auto merge of #75171 - amosonn:new_zeroed_slice, r=Amanieubors-15/+58
New zeroed slice Add to #63291 the methods ```rust impl<T> Box<[T]> { pub fn new_zeroed_slice(len: usize) -> Box<[MaybeUninit<T>]> {…} } impl<T> Rc<[T]> { pub fn new_zeroed_slice(len: usize) -> Rc<[MaybeUninit<T>]> {…} } impl<T> Arc<[T]> { pub fn new_zeroed_slice(len: usize) -> Arc<[MaybeUninit<T>]> {…} } ``` as suggested in https://github.com/rust-lang/rust/issues/63291#issuecomment-605511675 . Also optimize `{Rc, Arc}::new_zeroed` to use `alloc_zeroed`, otherwise they are no more efficient than using `new_uninit` and zeroing the memory manually (which was the original implementation).
2020-08-21Apply suggestions from code reviewLeSeulArtichaut-2/+2
Co-authored-by: Joshua Nelson <joshua@yottadb.com>
2020-08-21Use intra-doc-links in `alloc`LeSeulArtichaut-76/+43
2020-08-15tidy upDPC-23/+23
2020-08-13Add Arc::new_cyclicDPC-3/+80
2020-08-05Add {Box,Rc,Arc}::new_zeroed_sliceAmos Onn-0/+34
2020-08-05Use alloc_zeroed in {Rc,Arc}::new_zeroedAmos Onn-15/+24
2020-08-04Replace `Memoryblock` with `NonNull<[u8]>`Tim Diekmann-3/+3
2020-08-03Merge branch 'master' into remove-in-place-allocTim Diekmann-35/+12
2020-08-02fix typosliuzhenyu-1/+1
2020-07-30Rollup merge of #74782 - vorner:weak-into-raw-cnt-doc, r=dtolnayManish Goregaokar-11/+11
Don't use "weak count" around Weak::from_raw_ptr As `Rc/Arc::weak_count` returns 0 when having no strong counts, this could be confusing and it's better to avoid using that completely. Closes #73840.
2020-07-29Remove deprecated unstable `{Box,Rc,Arc}::into_raw_non_null` functionsSimon Sapin-23/+0
FCP: https://github.com/rust-lang/rust/issues/47336#issuecomment-619369613
2020-07-28Remove in-place allocation and revert to separate methods for zeroed allocationsTim Diekmann-4/+2
Fix docs
2020-07-28Don't use "weak count" around Weak::from_raw_ptrMichal 'vorner' Vaner-11/+11
As `Rc/Arc::weak_count` returns 0 when having no strong counts, this could be confusing and it's better to avoid using that completely. Closes #73840.
2020-07-27mv std libs to library/mark-0/+2294
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