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| author | bors[bot] <bors[bot]@users.noreply.github.com> | 2019-05-18 06:56:24 +0000 |
|---|---|---|
| committer | bors[bot] <bors[bot]@users.noreply.github.com> | 2019-05-18 06:56:24 +0000 |
| commit | 1135b648299846dc901e8d53ba2d080bf09aeb3f (patch) | |
| tree | 40a52ba4eb704110d50dec689c568bee1fd55756 | |
| parent | 0a7adb1a1e64821ac4b203a7bd9dc6abd910a17c (diff) | |
| parent | 45ec8fc2eea2a49e618f8febdae68df07f98d68d (diff) | |
| download | nix-1135b648299846dc901e8d53ba2d080bf09aeb3f.zip | |
Merge #1050
1050: Implement `sched_yield`. r=asomers a=sunfishcode
This adds the `sched_yield` function, which is part of POSIX:
http://pubs.opengroup.org/onlinepubs/9699919799/functions/sched_yield.html
and widely implemented on Unix-family platforms.
Co-authored-by: Dan Gohman <sunfish@mozilla.com>
| -rw-r--r-- | CHANGELOG.md | 2 | ||||
| -rw-r--r-- | src/sched.rs | 11 |
2 files changed, 13 insertions, 0 deletions
diff --git a/CHANGELOG.md b/CHANGELOG.md index ff67fde0..2ba1a469 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -26,6 +26,8 @@ This project adheres to [Semantic Versioning](http://semver.org/). ([#1045](https://github.com/nix-rust/nix/pull/1045)) - Add `forkpty` ([#1042](https://github.com/nix-rust/nix/pull/1042)) +- Add `sched_yield` + ([#1050](https://github.com/nix-rust/nix/pull/1050)) ### Changed - `PollFd` event flags renamed to `PollFlags` ([#1024](https://github.com/nix-rust/nix/pull/1024/)) diff --git a/src/sched.rs b/src/sched.rs index f8f3a68a..d381cbb5 100644 --- a/src/sched.rs +++ b/src/sched.rs @@ -85,6 +85,17 @@ pub fn sched_setaffinity(pid: Pid, cpuset: &CpuSet) -> Result<()> { Errno::result(res).map(drop) } +/// Explicitly yield the processor to other threads. +/// +/// [Further reading](http://pubs.opengroup.org/onlinepubs/9699919799/functions/sched_yield.html) +pub fn sched_yield() -> Result<()> { + let res = unsafe { + libc::sched_yield() + }; + + Errno::result(res).map(drop) +} + pub fn clone(mut cb: CloneCb, stack: &mut [u8], flags: CloneFlags, |