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relibc: P5-sched-api — apply Phase 0e patch

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Re-apply P5-sched-api.patch from local/patches/relibc/ to the local fork.
Multi-threading plan Phase 0e.
This commit is contained in:
vasilito
2026-07-02 07:03:53 +03:00
parent dfd687e3cf
commit 3399e18693
1 changed files with 82 additions and 15 deletions
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src/header/sched/mod.rs
+82 -15
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@@ -27,43 +27,110 @@ pub const SCHED_RR: c_int = 1;
pub const SCHED_OTHER: c_int = 2;
/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/sched_get_priority_max.html>.
// #[unsafe(no_mangle)]
#[unsafe(no_mangle)]
pub extern "C" fn sched_get_priority_max(policy: c_int) -> c_int {
todo!()
match policy {
SCHED_FIFO | SCHED_RR => 99,
SCHED_OTHER => 0,
_ => {
crate::platform::ERRNO.set(crate::header::errno::EINVAL);
-1
}
}
}
/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/sched_get_priority_max.html>.
// #[unsafe(no_mangle)]
/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/sched_get_priority_min.html>.
#[unsafe(no_mangle)]
pub extern "C" fn sched_get_priority_min(policy: c_int) -> c_int {
todo!()
match policy {
SCHED_FIFO | SCHED_RR => 1,
SCHED_OTHER => 0,
_ => {
crate::platform::ERRNO.set(crate::header::errno::EINVAL);
-1
}
}
}
/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/sched_getparam.html>.
// #[unsafe(no_mangle)]
#[unsafe(no_mangle)]
pub unsafe extern "C" fn sched_getparam(pid: pid_t, param: *mut sched_param) -> c_int {
todo!()
if pid != 0 {
crate::platform::ERRNO.set(crate::header::errno::ESRCH);
return -1;
}
crate::platform::ERRNO.set(crate::header::errno::ENOSYS);
-1
}
/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/sched_getscheduler.html>.
#[unsafe(no_mangle)]
pub extern "C" fn sched_getscheduler(pid: pid_t) -> c_int {
if pid != 0 {
crate::platform::ERRNO.set(crate::header::errno::ESRCH);
return -1;
}
crate::platform::ERRNO.set(crate::header::errno::ENOSYS);
-1
}
/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/sched_rr_get_interval.html>.
// #[unsafe(no_mangle)]
pub extern "C" fn sched_rr_get_interval(pid: pid_t, time: *const timespec) -> c_int {
todo!()
#[unsafe(no_mangle)]
pub extern "C" fn sched_rr_get_interval(pid: pid_t, tp: *mut timespec) -> c_int {
if pid != 0 {
crate::platform::ERRNO.set(crate::header::errno::ESRCH);
return -1;
}
if tp.is_null() {
crate::platform::ERRNO.set(crate::header::errno::EINVAL);
return -1;
}
unsafe {
(*tp).tv_sec = 0;
(*tp).tv_nsec = 100_000_000; // 100ms default SCHED_RR quantum
}
0
}
/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/sched_setparam.html>.
// #[unsafe(no_mangle)]
pub unsafe extern "C" fn sched_setparam(pid: pid_t, param: *const sched_param) -> c_int {
todo!()
#[unsafe(no_mangle)]
pub unsafe extern "C" fn sched_setparam(pid: pid_t, _param: *const sched_param) -> c_int {
if pid != 0 {
crate::platform::ERRNO.set(crate::header::errno::ESRCH);
return -1;
}
crate::platform::ERRNO.set(crate::header::errno::ENOSYS);
-1
}
/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/sched_setscheduler.html>.
// #[unsafe(no_mangle)]
#[unsafe(no_mangle)]
pub extern "C" fn sched_setscheduler(
pid: pid_t,
policy: c_int,
param: *const sched_param,
) -> c_int {
todo!()
if pid != 0 {
crate::platform::ERRNO.set(crate::header::errno::ESRCH);
return -1;
}
match policy {
SCHED_OTHER => {
if !param.is_null() && unsafe { (*param).sched_priority } != 0 {
crate::platform::ERRNO.set(crate::header::errno::EINVAL);
return -1;
}
SCHED_OTHER
}
SCHED_FIFO | SCHED_RR => {
crate::platform::ERRNO.set(crate::header::errno::ENOSYS);
-1
}
_ => {
crate::platform::ERRNO.set(crate::header::errno::EINVAL);
-1
}
}
}
/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/sched_yield.html>.