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path: root/library/std/src/sys/itron/thread.rs
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2024-01-11std: begin moving platform support modules into `pal`joboet-368/+0
2023-03-03Match unmatched backticks in library/est31-1/+1
2023-01-14Remove various double spaces in source comments.André Vennberg-1/+1
2022-12-12kmc-solid: Synchronize with the read when sending a joining task ID to a joineeTomoaki Kawada-1/+8
2022-12-12kmc-solid: Synchronize the first update of `ThreadInner::lifecycle` with the ↵Tomoaki Kawada-8/+8
second one on detach The first update (swap RMW operation) must happen-before the second update so that the latter can release `ThreadInner` safely.
2022-12-02kmc-solid: Don't do `Box::from_raw(&*(x: Box<T>) as *const T as *mut T)`Tomoaki Kawada-18/+30
This pattern seems to be considered illegal by Miri.
2022-12-01kmc-solid: Use `expose_addr` and `from_exposed_addr` for pointer-integer castsTomoaki Kawada-2/+2
Pointer-integer casts are required for conversion between `EXINF` (ITRON task entry point parameter) and `*const ThreadInner`. Addresses the deny-level lint `fuzzy_provenance_casts`.
2022-05-09Use Rust 2021 prelude in std itself.Mara Bos-1/+0
2022-01-31Rollup merge of #93504 - solid-rs:fix-kmc-solid-stack-size, r=nagisaEric Huss-1/+2
kmc-solid: Increase the default stack size This PR increases the default minimum stack size on the [`*-kmc-solid_*`](https://doc.rust-lang.org/nightly/rustc/platform-support/kmc-solid.html) Tier 3 targets to 64KiB (Arm) and 128KiB (AArch64). This value was chosen as a middle ground between supporting a relatively complex program (e.g., an application using a full-fledged off-the-shelf web server framework) with no additional configuration and minimizing resource consumption for the embedded platform that doesn't support lazily-allocated pages nor over-commitment (i.e., wasted stack spaces are wasted physical memory). If the need arises, the users can always set the `RUST_MIN_STACK` environmental variable to override the default stack size or use the platform API directly.
2022-01-31kmc-solid: Increase the default stack sizeTomoaki Kawada-1/+2
2022-01-31kmc-solid: Inherit the calling task's base priority in `Thread::new`Tomoaki Kawada-5/+2
Fixes a spawned task getting an unexpectedly higher priority if it's spawned by a task whose priority is temporarily boosted by a priority- protection mutex.
2021-12-14Fix a bunch of typosFrank Steffahn-2/+2
2021-11-01itron: Rename `itron::thread::{available_conccurrency -> available_parallelism}`Tomoaki Kawada-1/+1
Catching up with commit b4615b5bf9e3e722b480190714ad44ecd7fa2ed1
2021-09-28Add SOLID targetsTomoaki Kawada-0/+352
SOLID[1] is an embedded development platform provided by Kyoto Microcomputer Co., Ltd. This commit introduces a basic Tier 3 support for SOLID. # New Targets The following targets are added: - `aarch64-kmc-solid_asp3` - `armv7a-kmc-solid_asp3-eabi` - `armv7a-kmc-solid_asp3-eabihf` SOLID's target software system can be divided into two parts: an RTOS kernel, which is responsible for threading and synchronization, and Core Services, which provides filesystems, networking, and other things. The RTOS kernel is a μITRON4.0[2][3]-derived kernel based on the open-source TOPPERS RTOS kernels[4]. For uniprocessor systems (more precisely, systems where only one processor core is allocated for SOLID), this will be the TOPPERS/ASP3 kernel. As μITRON is traditionally only specified at the source-code level, the ABI is unique to each implementation, which is why `asp3` is included in the target names. More targets could be added later, as we support other base kernels (there are at least three at the point of writing) and are interested in supporting other processor architectures in the future. # C Compiler Although SOLID provides its own supported C/C++ build toolchain, GNU Arm Embedded Toolchain seems to work for the purpose of building Rust. # Unresolved Questions A μITRON4 kernel can support `Thread::unpark` natively, but it's not used by this commit's implementation because the underlying kernel feature is also used to implement `Condvar`, and it's unclear whether `std` should guarantee that parking tokens are not clobbered by other synchronization primitives. # Unsupported or Unimplemented Features Most features are implemented. The following features are not implemented due to the lack of native support: - `fs::File::{file_attr, truncate, duplicate, set_permissions}` - `fs::{symlink, link, canonicalize}` - Process creation - Command-line arguments Backtrace generation is not really a good fit for embedded targets, so it's intentionally left unimplemented. Unwinding is functional, however. ## Dynamic Linking Dynamic linking is not supported. The target platform supports dynamic linking, but enabling this in Rust causes several problems. - The linker invocation used to build the shared object of `std` is too long for the platform-provided linker to handle. - A linker script with specific requirements is required for the compiled shared object to be actually loadable. As such, we decided to disable dynamic linking for now. Regardless, the users can try to create shared objects by manually invoking the linker. ## Executable Building an executable is not supported as the notion of "executable files" isn't well-defined for these targets. [1] https://solid.kmckk.com/SOLID/ [2] http://ertl.jp/ITRON/SPEC/mitron4-e.html [3] https://en.wikipedia.org/wiki/ITRON_project [4] https://toppers.jp/