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2025-07-28thread name in stack overflow messagejoboet-1/+5
2025-07-06sleep_until: use clock_nanosleep where possibledvdsk-1/+9
Using clock nanosleep leads to more accurate sleep times on platforms where it is supported. To enable using clock_nanosleep this makes `sleep_until` platform specific. That unfortunatly requires identical placeholder implementations for the other platforms (windows/mac/wasm etc). we will land platform specific implementations for those later. See the `sleep_until` tracking issue. This requires an accessors for the Instant type. As that accessor is only used on the platforms that have clock_nanosleep it is marked as allow_unused. 32bit time_t targets do not use clock_nanosleep atm, they instead rely on the same placeholder as the other platforms. We could make them use clock_nanosleep too in the future using `__clock_nanosleep_time64`. __clock_nanosleep_time64 is documented at: https://www.gnu.org/software/libc/manual/html_node/64_002dbit-time-symbol-handling.html
2025-05-15deduplicate abort implementationsjoboet-9/+0
Currently, the code for process aborts is duplicated across `panic_abort` and `std`. This PR uses `#[rustc_std_internal_symbol]` to make the `std` implementation available to `panic_abort` via the linker, thereby deduplicating the code.
2025-04-27use generic Atomic type where possibleChristopher Durham-6/+6
in core/alloc/std only for now, and ignoring test files Co-authored-by: Pavel Grigorenko <GrigorenkoPV@ya.ru>
2025-04-21Move `sys::pal::os::Env` into `sys::env`Thalia Archibald-120/+6
Although `Env` (as `Vars`), `Args`, path functions, and OS constants are publicly exposed via `std::env`, their implementations are each self-contained. Keep them separate in `std::sys` and make a new module, `sys::env`, for `Env`.
2025-04-18Combine env consts into std::sys::env_constsThalia Archibald-10/+0
2025-04-12Move args into std::sysThalia Archibald-68/+1
2025-04-04Move fd into sysThalia Archibald-176/+0
2025-03-22std: move process implementations to `sys`joboet-2/+0
As per #117276, this moves the implementations of `Process` and friends out of the `pal` module and into the `sys` module, removing quite a lot of error-prone `#[path]` imports in the process (hah, get it ;-)). I've also made the `zircon` module a dedicated submodule of `pal::unix`, hopefully we can move some other definitions there as well (they are currently quite a lot of duplications in `sys`). Also, the `ensure_no_nuls` function on Windows now lives in `sys::pal::windows` – it's not specific to processes and shared by the argument implementation.
2025-03-17Implement read_buf for HermitThalia Archibald-1/+16
2025-03-10Rollup merge of #138074 - thaliaarchi:hermit-seek, r=ChrisDentonMatthias Krüger-2/+19
Support `File::seek` for Hermit `lseek` was added in `hermit-abi` in commit [87dd201](https://github.com/hermit-os/hermit-rs/commit/87dd201a14ac7661e1a4b761273e24d750496286) (add missing interface for lseek, 2024-07-15), which was just released in version 0.5.0. cc ``@mkroening,`` ``@stlankes`` Fixes https://github.com/hermit-os/hermit-rs/issues/652
2025-03-09std: move stdio to `sys`joboet-98/+0
As per #117276, this moves the platform definitions of `Stdout` and friends into `sys`. This PR also unifies the UNIX and Hermit implementations and moves the `__rust_print_err` function needed by libunwind on SGX into the dedicated module for such helper functions.
2025-03-09Support File::seek for HermitThalia Archibald-2/+19
2025-03-08Move fs into sysThalia Archibald-603/+0
2025-02-28Use correct error message casing for `io::const_error`sNoratrieb-1/+1
Error messages are supposed to start with lowercase letters, but a lot of `io::const_error` messages did not. This fixes them to start with a lowercase letter. I did consider adding a const check for this to the macro, but some of them start with proper nouns that make sense to uppercase them. See https://doc.rust-lang.org/1.85.0/std/error/trait.Error.html
2025-02-17Rollup merge of #137165 - thaliaarchi:file-tell, r=ChrisDentonMatthias Krüger-0/+4
Use `tell` for `<File as Seek>::stream_position` Some platforms have a more efficient way to get the current offset of the file than by seeking. For example, Wasi has `fd_tell` and SOLID has `SOLID_FS_Ftell`. Implement `<File as Seek>::stream_position()` in terms of those. I do not use any APIs that were not already used in `std`. Although, the `libc` crate has [`ftell`](https://docs.rs/libc/latest/libc/fn.ftell.html), [`ftello`](https://docs.rs/libc/latest/libc/fn.ftello.html), and [`ftello64`](https://docs.rs/libc/latest/libc/fn.ftello64.html), I do not know platform coverage. It appears that Windows has no `tell`-like API. I have checked that it builds on each relevant platform.
2025-02-17Use tell for <File as Seek>::stream_positionThalia Archibald-0/+4
2025-02-17Rollup merge of #136844 - thaliaarchi:const-io-error, r=ChrisDentonMatthias Krüger-6/+2
Use `const_error!` when possible Replace usages of `io::Error::new(io::ErrorKind::Variant, "constant string")` with `io::const_error!(io::ErrorKind::Variant, "constant string")` to avoid allocations when possible. Additionally, fix `&&str` error messages in SGX and missing/misplaced trailing commas in `const_error!`.
2025-02-13std: Apply unsafe_attr_outside_unsafeEric Huss-2/+2
2025-02-10Fix &&str and trailing commas in io::const_error!Thalia Archibald-6/+2
2025-02-09Mark extern blocks as unsafeMichael Goulet-1/+1
2025-02-07std: move `io` module out of `pal`joboet-88/+0
2025-02-02std: move network code into `sys`joboet-348/+0
As per #117276, this PR moves `sys_common::net` and the `sys::pal::net` into the newly created `sys::net` module. In order to support #135141, I've moved all the current network code into a separate `connection` module, future functions like `hostname` can live in separate modules. I'll probably do a follow-up PR and clean up some of the actual code, this is mostly just a reorganization.
2024-12-17Use field init shorthand where possibleJosh Triplett-3/+3
Field init shorthand allows writing initializers like `tcx: tcx` as `tcx`. The compiler already uses it extensively. Fix the last few places where it isn't yet used.
2024-12-13Fix building `std` for Hermit after `c_char` changeMartin Kröning-6/+6
2024-11-26std: update internal uses of `io::const_error!`joboet-13/+11
2024-11-14Rollup merge of #132790 - aDotInTheVoid:ioslice-asslice-rides-again, r=cuviperJubilee-1/+6
Add as_slice/into_slice for IoSlice/IoSliceMut. ACP: https://github.com/rust-lang/libs-team/issues/93 Tracking issue: #132818 Based on a623c5233ae7f6b540e5c00f2be02f40b33b0793 (CC `@mpdn)` and #111277 (CC `@Lucretiel).` Closes: #124659 Tracking Issue: TODO try-job: test-various try-job: dist-various-1 try-job: dist-various-2 r? libs
2024-11-11Rollup merge of #130999 - cberner:flock_pr, r=joboetMatthias Krüger-0/+20
Implement file_lock feature This adds lock(), lock_shared(), try_lock(), try_lock_shared(), and unlock() to File gated behind the file_lock feature flag This is the initial implementation of https://github.com/rust-lang/rust/issues/130994 for Unix and Windows platforms. I will follow it up with an implementation for WASI preview 2
2024-11-09Add as_slice/into_slice for IoSlice/IoSliceMut.Alona Enraght-Moony-1/+6
Co-authored-by: Mike Pedersen <mike@mikepedersen.dk> Co-authored-by: Nathan West <Lucretiel@gmail.com>
2024-10-17Abstract the state type for futexesPaul Menage-2/+7
In the same way that we expose SmallAtomic and SmallPrimitive to allow Windows to use a value other than an AtomicU32 for its futex state, this patch switches the primary futex state type from AtomicU32 to futex::Atomic. The futex::Atomic type should be usable as an atomic value with underlying primitive type equal to futex::Primitive. This allows supporting the futex API on systems where the underlying kernel futex implementation requires more state than simply an AtomicU32. All in-tree futex implementations simply define {Atomic,Primitive} directly as {AtomicU32,u32}.
2024-10-13Implement file_lock featureChristopher Berner-0/+20
This adds lock(), lock_shared(), try_lock(), try_lock_shared(), and unlock() to File gated behind the file_lock feature flag
2024-10-02std: make `thread::current` available in all `thread_local!` destructorsjoboet-1/+6
2024-09-25Use `&raw` in the standard libraryJosh Stone-6/+4
Since the stabilization in #127679 has reached stage0, 1.82-beta, we can start using `&raw` freely, and even the soft-deprecated `ptr::addr_of!` and `ptr::addr_of_mut!` can stop allowing the unstable feature. I intentionally did not change any documentation or tests, but the rest of those macro uses are all now using `&raw const` or `&raw mut` in the standard library.
2024-09-23std: implement the `random` featurejoboet-14/+0
Implements the ACP https://github.com/rust-lang/libs-team/issues/393.
2024-09-22Reformat using the new identifier sorting from rustfmtMichael Goulet-4/+4
2024-08-27Auto merge of #128134 - joboet:move_pal_alloc, r=cupiverbors-29/+0
std: move allocators to `sys` Part of #117276.
2024-08-27std: move allocators to `sys`joboet-29/+0
2024-08-26pal/hermit: saturate `usleep` microseconds at `u64::MAX`Martin Kröning-1/+2
Signed-off-by: Martin Kröning <martin.kroening@eonerc.rwth-aachen.de>
2024-08-25pal/hermit: correctly round up microseconds in `Thread::sleep`Martin Kröning-1/+3
Signed-off-by: Martin Kröning <martin.kroening@eonerc.rwth-aachen.de>
2024-08-01fix(pal/hermit): `deny(unsafe_op_in_unsafe_fn)`Martin Kröning-20/+40
Signed-off-by: Martin Kröning <martin.kroening@eonerc.rwth-aachen.de>
2024-08-01refactor(pal/hermit): make `ENV` a non-mutable staticMartin Kröning-19/+15
Signed-off-by: Martin Kröning <martin.kroening@eonerc.rwth-aachen.de>
2024-07-31refactor(pal/hermit): use default impl of `GlobalAlloc::alloc_zeroed`Martin Kröning-10/+0
Signed-off-by: Martin Kröning <martin.kroening@eonerc.rwth-aachen.de>
2024-07-31refactor(pal/hermit): return `!` to satisfy rust-analyzerMartin Kröning-7/+3
This silences this rust-analyzer-specific error: `expected !, found ()` Signed-off-by: Martin Kröning <martin.kroening@eonerc.rwth-aachen.de>
2024-07-29Reformat `use` declarations.Nicholas Nethercote-34/+20
The previous commit updated `rustfmt.toml` appropriately. This commit is the outcome of running `x fmt --all` with the new formatting options.
2024-07-24Rollup merge of #127733 - GrigorenkoPV:don't-forget, r=AmanieuMatthias Krüger-4/+2
Replace some `mem::forget`'s with `ManuallyDrop` > but I would like to see a larger effort to replace all uses of `mem::forget`. _Originally posted by `@saethlin` in https://github.com/rust-lang/rust/issues/127584#issuecomment-2226087767_ So, r? `@saethlin` Sorry, I have finished writing all of this before I got your response.
2024-07-16Use futex.rs for Windows thread parkingChris Denton-0/+5
2024-07-15lib: replace some `mem::forget`'s with `ManuallyDrop`Pavel Grigorenko-4/+2
2024-06-24Auto merge of #126523 - joboet:the_great_big_tls_refactor, r=Mark-Simulacrumbors-36/+2
std: refactor the TLS implementation As discovered by Mara in #110897, our TLS implementation is a total mess. In the past months, I have simplified the actual macros and their expansions, but the majority of the complexity comes from the platform-specific support code needed to create keys and register destructors. In keeping with #117276, I have therefore moved all of the `thread_local_key`/`thread_local_dtor` modules to the `thread_local` module in `sys` and merged them into a new structure, so that future porters of `std` can simply mix-and-match the existing code instead of having to copy the same (bad) implementation everywhere. The new structure should become obvious when looking at `sys/thread_local/mod.rs`. Unfortunately, the documentation changes associated with the refactoring have made this PR rather large. That said, this contains no functional changes except for two small ones: * the key-based destructor fallback now, by virtue of sharing the implementation used by macOS and others, stores its list in a `#[thread_local]` static instead of in the key, eliminating one indirection layer and drastically simplifying its code. * I've switched over ZKVM (tier 3) to use the same implementation as WebAssembly, as the implementation was just a way worse version of that Please let me know if I can make this easier to review! I know these large PRs aren't optimal, but I couldn't think of any good intermediate steps. `@rustbot` label +A-thread-locals
2024-06-22Rollup merge of #126140 - eduardosm:stabilize-fs_try_exists, r=AmanieuMatthias Krüger-1/+1
Rename `std::fs::try_exists` to `std::fs::exists` and stabilize fs_try_exists FCP completed in tracking issue. Tracking issue: https://github.com/rust-lang/rust/issues/83186 Closes https://github.com/rust-lang/rust/issues/83186 Stabilized API: ```rust mod fs { pub fn exists<P: AsRef<Path>>(path: P) -> io::Result<bool>; } ```
2024-06-15std: refactor the TLS implementationjoboet-36/+2
As discovered by Mara in #110897, our TLS implementation is a total mess. In the past months, I have simplified the actual macros and their expansions, but the majority of the complexity comes from the platform-specific support code needed to create keys and register destructors. In keeping with #117276, I have therefore moved all of the `thread_local_key`/`thread_local_dtor` modules to the `thread_local` module in `sys` and merged them into a new structure, so that future porters of `std` can simply mix-and-match the existing code instead of having to copy the same (bad) implementation everywhere. The new structure should become obvious when looking at `sys/thread_local/mod.rs`. Unfortunately, the documentation changes associated with the refactoring have made this PR rather large. That said, this contains no functional changes except for two small ones: * the key-based destructor fallback now, by virtue of sharing the implementation used by macOS and others, stores its list in a `#[thread_local]` static instead of in the key, eliminating one indirection layer and drastically simplifying its code. * I've switched over ZKVM (tier 3) to use the same implementation as WebAssembly, as the implementation was just a way worse version of that Please let me know if I can make this easier to review! I know these large PRs aren't optimal, but I couldn't think of any good intermediate steps. @rustbot label +A-thread-locals
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