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2022-05-03Add #[cfg] in cfg_if for linux in unix/futex.Mara Bos-3/+5
2022-05-03Don't use futexes on netbsd.Mara Bos-43/+5
The latest NetBSD release doesn't include the futex syscall yet.
2022-04-29Disable pthread thread parker on futex platforms.Mara Bos-1/+5
2022-04-29Always return false in futex_wake on {Free,DragonFly}BSD.Mara Bos-16/+13
2022-04-29Use futex-based locks and thread parker on FreeBSD.Mara Bos-4/+59
2022-04-29Use futex-based locks and thread parker on DragonFlyBSD.Mara Bos-1/+43
2022-04-29Use futex-based locks and thread parker on NetBSD.Mara Bos-24/+52
2022-04-29Use futex-based locks and thread parker on OpenBSD.Mara Bos-1/+52
2022-04-29Auto merge of #96441 - ChrisDenton:sync-pipes, r=m-ou-sebors-31/+107
Windows: Make stdin pipes synchronous Stdin pipes do not need to be used asynchronously within the standard library. This is a first step in making pipes mostly synchronous. r? `@m-ou-se`
2022-04-28Auto merge of #96393 - joboet:pthread_parker, r=thomccbors-9/+281
std: directly use pthread in UNIX parker implementation `Mutex` and `Condvar` are being replaced by more efficient implementations, which need thread parking themselves (see #93740). Therefore we should use the `pthread` synchronization primitives directly. Also, we can avoid allocating the mutex and condition variable because the `Parker` struct is being placed in an `Arc` anyways. This basically is just a copy of the current `Mutex` and `Condvar` code, which will however be removed (again, see #93740). An alternative implementation could be to use dedicated private `OsMutex` and `OsCondvar` types, but all the other platforms supported by std actually have their own thread parking primitives. I used `Pin` to guarantee a stable address for the `Parker` struct, while the current implementation does not, rather using extra unsafe declaration. Since the thread struct is shared anyways, I assumed this would not add too much clutter while being clearer.
2022-04-28Yield the thread when waiting to delete a fileChris Denton-0/+3
2022-04-28std: simplify UNIX parker timeoutsjoboet-59/+21
2022-04-27Note the importance of using sync pipesChris Denton-1/+19
2022-04-26Windows: Make stdin pipes synchronousChris Denton-31/+85
Stdin pipes do not need to be used asynchronously within the standard library.
2022-04-26Add `set_inheritable` for Windows `Handle`sChris Denton-0/+4
2022-04-26Retry deleting a directoryChris Denton-2/+15
It's possible that a file in the directory is pending deletion. In that case we might succeed after a few attempts.
2022-04-25Remove references to git.ioEric Huss-1/+2
2022-04-26Windows: Iterative `remove_dir_all`Chris Denton-77/+67
This will allow better strategies for use of memory and File handles. However, fully taking advantage of that is left to future work.
2022-04-25std: directly use pthread in UNIX parker implementationjoboet-7/+317
Mutex and Condvar are being replaced by more efficient implementations, which need thread parking themselves (see #93740). Therefore use the pthread synchronization primitives directly. Also, avoid allocating because the Parker struct is being placed in an Arc anyways.
2022-04-25Auto merge of #95246 - ChrisDenton:command-args, r=joshtriplettbors-91/+191
Windows Command: Don't run batch files using verbatim paths Fixes #95178 Note that the first commit does some minor refactoring (moving command line argument building to args.rs). The actual changes are in the second.
2022-04-24Auto merge of #94609 - esp-rs:esp-idf-stat-type-fixes, r=Mark-Simulacrumbors-3/+18
espidf: fix stat Marking as draft as currently dependant on [a libc fix](https://github.com/rust-lang/libc/pull/2708) and release.
2022-04-23std: `<ExitStatus as Display>::fmt` name the signal it died fromMichael Howell-3/+66
2022-04-23Auto merge of #96314 - AronParker:issue-96297-fix, r=thomccbors-1/+7
Reduce allocations for path conversions on Windows Previously, UTF-8 to UTF-16 Path conversions on Windows unnecessarily allocate twice, as described in #96297. This commit fixes that issue.
2022-04-23Auto merge of #94887 - dylni:move-normpath-crate-impl-to-libstd, r=ChrisDentonbors-29/+115
Improve Windows path prefix parsing This PR fixes improves parsing of Windows path prefixes. `parse_prefix` now supports both types of separators on Windows (`/` and `\`).
2022-04-22Remove redundant type annotationAron Parker-1/+1
2022-04-22Reduce allocations for path conversions on WindowsAron Parker-1/+7
Previously, UTF-8 to UTF-16 Path conversions on Windows unnecessarily allocate twice, as described in #96297. This commit fixes that issue.
2022-04-21Rollup merge of #96193 - djkoloski:fuchsia_current_exe, r=tmandryDylan DPC-1/+21
[fuchsia] Add implementation for `current_exe` This implementation returns a best attempt at the current exe path. On fuchsia, fdio will always use `argv[0]` as the process name and if it is not set then an error will be returned. Because this is not guaranteed to be the case, this implementation returns an error if `argv` does not contain any elements.
2022-04-20Rollup merge of #96234 - goffrie:eloop, r=thomccDylan DPC-1/+2
remove_dir_all_recursive: treat ELOOP the same as ENOTDIR On older Linux kernels (I tested on 4.4, corresponding to Ubuntu 16.04), opening a symlink using `O_DIRECTORY | O_NOFOLLOW` returns `ELOOP` instead of `ENOTDIR`. We should handle it the same, since a symlink is still not a directory and needs to be `unlink`ed.
2022-04-20Rollup merge of #96206 - m-ou-se:wasm-futex-locks, r=alexcrichtonDylan DPC-358/+24
Use sys::unix::locks::futex* on wasm+atomics. This removes the wasm-specific lock implementations and instead re-uses the implementations from sys::unix. Tracking issue: https://github.com/rust-lang/rust/issues/93740 cc ``@alexcrichton``
2022-04-20Rollup merge of #96167 - CAD97:weak-dlsym-less-ptr-crime, r=thomccDylan DPC-17/+15
Replace sys/unix/weak AtomicUsize with AtomicPtr Should fix #96163. Can't easily test on Windows though...
2022-04-20remove_dir_all_recursive: treat ELOOP the same as ENOTDIRGeoffry Song-1/+2
2022-04-19[fuchsia] Add implementation for `current_exe`David Koloski-1/+21
This implementation returns a best attempt at the current exe path. On fuchsia, fdio will always use `argv[0]` as the process name and if it is not set then an error will be returned. Because this is not guaranteed to be the case, this implementation returns an error if `argv` does not contain any elements.
2022-04-19espidf: fix statScott Mabin-3/+18
* corect type usage with new type definitions in libc
2022-04-19Use futex locks on emscripten.Mara Bos-0/+1
2022-04-19Use futex locks on wasm+atomics.Mara Bos-354/+6
2022-04-19Make std::sys::wasm::futex consistent with unix::futex.Mara Bos-4/+18
2022-04-19Make std::sys::unix::futex consistent on emscripten.Mara Bos-22/+25
2022-04-18Auto merge of #96042 - m-ou-se:one-reentrant-mutex, r=Amanieubors-528/+6
Use a single ReentrantMutex implementation on all platforms. This replaces all platform specific ReentrantMutex implementations by the one I added in #95727 for Linux, since that one does not depend on any platform specific details. r? `@Amanieu`
2022-04-18Remove forgotten reexport of ReentrantMutex in sys::unsupported.Mara Bos-1/+1
2022-04-17Replace sys/unix/weak AtomicUsize with AtomicPtrCAD97-17/+15
2022-04-17Auto merge of #93530 - anonion0:pthread_sigmask_fix, r=JohnTitorbors-4/+5
fix error handling for pthread_sigmask(3) Errors from `pthread_sigmask(3)` were handled using `cvt()`, which expects a return value of `-1` on error and uses `errno`. However, `pthread_sigmask(3)` returns `0` on success and an error number otherwise. Fix it by replacing `cvt()` with `cvt_nz()`.
2022-04-17move import to fix warning with emscripten targetRalf Sager-1/+2
2022-04-17Improve Windows path prefix parsingdylni-29/+115
2022-04-16Use a single ReentrantMutex implementation on all platforms.Mara Bos-527/+5
2022-04-15Rollup merge of #96040 - m-ou-se:futex-u32, r=AmanieuDylan DPC-47/+49
Use u32 instead of i32 for futexes. This changes futexes from i32 to u32. The [Linux man page](https://man7.org/linux/man-pages/man2/futex.2.html) uses `uint32_t` for them, so I'm not sure why I used i32 for them. Maybe because I first used them for thread parkers, where I used -1, 0, and 1 as the states. (Wasm's `memory.atomic.wait32` does use `i32`, because wasm doesn't support `u32`.) It doesn't matter much, but using the unsigned type probably results in fewer surprises when shifting bits around or using comparison operators. r? ```@Amanieu```
2022-04-15Auto merge of #94079 - petrochenkov:cstr, r=joshtriplettbors-40/+0
library: Move `CStr` to libcore, and `CString` to liballoc Closes https://github.com/rust-lang/rust/issues/46736 Interesting points: - Stability: - To make `CStr(ing)` from libcore/liballoc unusable without enabling features I had to make these structures unstable, and reexport them from libstd using stable type aliases instead of `pub use` reexports. (Because stability of `use` items is not checked.) - Relying on target ABI in libcore is ok: - https://github.com/rust-lang/rust/pull/94079#issuecomment-1044263371 - `trait CStrExt` (UPDATE: used only in `cfg(bootstrap)` mode, otherwise lang items are used instead) - https://github.com/rust-lang/rust/pull/94079#issuecomment-1047863450 - `strlen` - https://github.com/rust-lang/rust/pull/94079#issuecomment-1047863450 Otherwise it's just a code move + some minor hackery usual for liballoc in `cfg(test)` mode.
2022-04-15Auto merge of #95841 - ChrisDenton:pipe-server, r=m-ou-sebors-1/+50
Windows: Use a pipe relay for chaining pipes Fixes #95759 This fixes the issue by chaining pipes synchronously and manually pumping messages between them. It's not ideal but it has the advantage of not costing anything if pipes are not chained ("don't pay for what you don't use") and it also avoids breaking existing code that rely on our end of the pipe being asynchronous (which includes rustc's own testing framework). Libraries can avoid needing this by using their own pipes to chain commands.
2022-04-14library: Remove definitions and reexports of `strlen` from libstdVadim Petrochenkov-40/+0
2022-04-14Use u32 instead of i32 for futexes.Mara Bos-47/+49
2022-04-12Allow cvt_nz to be unused on some platforms.Mara Bos-0/+1
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