rust/library/std/src/sys/sync/mutex, branch auto

library: Migrate from `cfg_if` to `cfg_select`

2025-08-16T12:28:31+00:00

Migrate the standard library from using the external `cfg_if` crate to using the now-built-in `cfg_select` macro. This does not yet eliminate the dependency from `library/std/Cargo.toml`, because while the standard library itself no longer uses `cfg_if`, it also incorporates the `backtrace` crate, which does. Migration assisted by the following vim command (after selecting the full `cfg_if!` invocation): ``` '<,'>s/\(cfg_if::\)\?cfg_if/cfg_select/ | '<,'>s/^\( *\)} else {/\1}\r\1_ => {/c | '<,'>s/^\( *\)} else if #\[cfg(\(.*\))\] /\1}\r\1\2 => /e | '<,'>s/if #\[cfg(\(.*\))\] {/\1 => {/e ``` This is imperfect, but substantially accelerated the process. This prompts for confirmation on the `} else {` since that can also appear inside one of the arms. This also requires manual intervention to handle any multi-line conditions.

Add comments to diagnostic items

2025-05-28T15:05:45+00:00

Make pthread Mutex internals less public

2025-05-28T13:13:38+00:00

Add diagnostic items to sys::Mutex

2025-05-28T13:12:56+00:00

collect all Fuchsia bindings into the `fuchsia` module

2025-05-05T10:16:40+00:00

The Fuchsia bindings are currently spread out across multiple modules in `sys/pal/unix` leading to unnecessary duplication. This PR moves all of these definitions into `sys::pal::unix::fuchsia` and additionally: * deduplicates the definitions * makes the error names consistent * marks some extern functions as safe * removes unused items (there's no need to maintain these bindings if we're not going to use them) * removes the documentation for the definitions (contributors should always consult the platform documentation, duplicating that here is just an extra maintenance burden)

use generic Atomic type where possible

2025-04-26T23:18:08+00:00

in core/alloc/std only for now, and ignoring test files Co-authored-by: Pavel Grigorenko

Fix `*-win7-windows-msvc` target since 26eeac1a1e9fe46ffd80dd0d3dafdd2c2a644306

2025-02-19T10:05:37+00:00

Rollup merge of #128184 - joboet:refactor_pthread_sync, r=workingjubilee

2024-12-01T07:15:21+00:00

std: refactor `pthread`-based synchronization The non-trivial code for `pthread_condvar` is duplicated across the thread parking and the `Mutex`/`Condvar` implementations. This PR moves that code into `sys::pal`, which now exposes an `unsafe` wrapper type for `pthread_mutex_t` and `pthread_condvar_t`.

std: clarify comments about initialization

2024-11-30T15:22:56+00:00

update cfgs

2024-11-27T15:14:54+00:00