rust/src/liballoc/arc.rs, branch perf-tmp

Rename alloc::arc to alloc::sync, to match std::sync

2018-06-29T12:01:33+00:00

Arc: remove unused allocation from Weak::new()

2018-06-28T18:49:47+00:00

Rename OOM to allocation error

2018-06-18T19:41:24+00:00

The acronym is not descriptive unless one has seen it before. * Rename the `oom` function to `handle_alloc_error`. It was **stabilized in 1.28**, so if we do this at all we need to land it this cycle. * Rename `set_oom_hook` to `set_alloc_error_hook` * Rename `take_oom_hook` to `take_alloc_error_hook` Bikeshed: `alloc` v.s. `allocator`, `error` v.s. `failure`

Remove alloc::Opaque and use *mut u8 as pointer type for GlobalAlloc

2018-06-11T20:47:23+00:00

Update `Arc` and `Rc` to use `NonNull::cast` to cast the inner pointers

2018-05-31T20:27:08+00:00

This avoids an `unsafe` block in each case.

Implement `downcast` for `Arc`

2018-05-31T20:27:08+00:00

We only need to implement it for `Any + Send + Sync` because in practice that's the only useful combination for `Arc` and `Any`. Implementation for #44608 under the `rc_downcast` feature.

Pass a `Layout` to `oom`

2018-05-29T20:35:48+00:00

As discussed in https://github.com/rust-lang/rust/issues/49668#issuecomment-384893456 and subsequent, there are use-cases where the OOM handler needs to know the size of the allocation that failed. The alignment might also be a cause for allocation failure, so providing it as well can be useful.

Auto merge of #50097 - glandium:box_free, r=nikomatsakis

2018-04-27T12:24:17+00:00

Partial future-proofing for Box In some ways, this is similar to @eddyb's PR #47043 that went stale, but doesn't cover everything. Notably, this still leaves Box internalized as a pointer in places, so practically speaking, only ZSTs can be practically added to the Box type with the changes here (the compiler ICEs otherwise). The Box type is not changed here, that's left for the future because I want to test that further first, but this puts things in place in a way that hopefully will make things easier.

Added missing `.` in docs.

2018-04-25T12:14:43+00:00

Switch box_free to take the destructured contents of Box

2018-04-25T02:39:07+00:00

As of now, Box only contains a Unique pointer, so this is the sole argument to box_free. Consequently, we remove the code supporting the previous box_free signature. We however keep the old definition for bootstrapping purpose.