Skip to content

os : implement os.sched_yield, os.sched_get_priority_min, os.sched_get_priority_max #2997

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 2 commits into from
Sep 2, 2021
Merged

os : implement os.sched_yield, os.sched_get_priority_min, os.sched_get_priority_max #2997

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
d8bbb42
Add os.sched_yield, os.sched_get_priority_min, os.sched_get_priority_max
zetwhite Sep 1, 2021
7359f9d
skip test_sched_priority for now
youknowone Sep 2, 2021
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
1 change: 1 addition & 0 deletions Lib/test/test_posix.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1306,6 +1306,7 @@ def test_sched_yield(self):
posix.sched_yield()

@requires_sched_h
@unittest.skip("TODO: RUSTPYTHON https://github.com/rust-lang/libc/pull/2384")
@unittest.skipUnless(hasattr(posix, 'sched_get_priority_max'),
"requires sched_get_priority_max()")
def test_sched_priority(self):
Expand Down
61 changes: 61 additions & 0 deletions vm/src/stdlib/os.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2087,6 +2087,39 @@ mod posix {
#[pyattr]
const EX_CONFIG: i8 = exitcode::CONFIG as i8;

#[cfg(any(
target_os = "linux",
target_os = "android",
target_os = "freebsd",
target_os = "dragonfly",
target_os = "netbsd"
))]
#[pyattr]
const SCHED_RR: i32 = libc::SCHED_RR;
#[cfg(any(
target_os = "linux",
target_os = "android",
target_os = "freebsd",
target_os = "dragonfly",
target_os = "netbsd"
))]
#[pyattr]
const SCHED_FIFO: i32 = libc::SCHED_FIFO;
#[cfg(any(
target_os = "linux",
target_os = "freebsd",
target_os = "dragonfly",
target_os = "netbsd"
))]
#[pyattr]
const SCHED_OTHER: i32 = libc::SCHED_OTHER;
#[cfg(any(target_os = "linux", target_os = "android"))]
#[pyattr]
const SCHED_IDLE: i32 = libc::SCHED_IDLE;
#[cfg(any(target_os = "linux", target_os = "android"))]
#[pyattr]
const SCHED_BATCH: i32 = libc::SCHED_BATCH;

#[cfg(any(target_os = "linux", target_os = "freebsd", target_os = "macos"))]
#[pyattr]
const POSIX_SPAWN_OPEN: i32 = PosixSpawnFileActionIdentifier::Open as i32;
Expand Down Expand Up @@ -2369,6 +2402,34 @@ mod posix {
}
}

#[cfg(not(target_os = "redox"))]
#[pyfunction]
fn sched_get_priority_max(policy: i32, vm: &VirtualMachine) -> PyResult<i32> {
let max = unsafe { libc::sched_get_priority_max(policy) };
if max == -1 {
Err(errno_err(vm))
} else {
Ok(max)
}
}

#[cfg(not(target_os = "redox"))]
#[pyfunction]
fn sched_get_priority_min(policy: i32, vm: &VirtualMachine) -> PyResult<i32> {
let min = unsafe { libc::sched_get_priority_min(policy) };
if min == -1 {
Err(errno_err(vm))
} else {
Ok(min)
}
}

#[pyfunction]
fn sched_yield(vm: &VirtualMachine) -> PyResult<()> {
let _ = nix::sched::sched_yield().map_err(|e| e.into_pyexception(vm))?;
Ok(())
}

#[pyfunction]
fn get_inheritable(fd: RawFd, vm: &VirtualMachine) -> PyResult<bool> {
use nix::fcntl::fcntl;
Expand Down