vasilito
34360e1e4f
P0-P2: Barrier SMP, sigmask/pthread_kill races, robust mutexes, RT scheduling, POSIX sched API P3: PerCpuSched struct, per-CPU wiring, work stealing, load balancing, initial placement P4: 64-shard futex table, REQUEUE, PI futexes (LOCK_PI/UNLOCK_PI/TRYLOCK_PI), robust futexes, vruntime tracking, min-vruntime SCHED_OTHER selection P5: setpriority/getpriority, pthread_setaffinity_np, pthread_setname_np, pthread_setschedparam (Redox) P6: Cache-affine scheduling (last_cpu + vruntime bonus), NUMA topology kernel hints + numad userspace daemon Stability fixes: make_consistent stores 0 (dead TID fix), cond.rs error propagation, SPIN_COUNT adaptive spinning, Sys::open &str fix, PI futex CAS race, proc.rs lock ordering, barrier destroy Patches: 33 kernel + 58 relibc patches, all tracked in recipes Docs: KERNEL-SCHEDULER-MULTITHREAD-IMPROVEMENT-PLAN.md updated, SCHEDULER-REVIEW-FINAL.md created Architecture: NUMA topology parsing stays userspace (numad daemon), kernel stores lightweight NumaTopology hints
131 lines
4.1 KiB
Diff
131 lines
4.1 KiB
Diff
diff --git a/src/header/sched/mod.rs b/src/header/sched/mod.rs
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index bcdd346..6066550 100644
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--- a/src/header/sched/mod.rs
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+++ b/src/header/sched/mod.rs
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@@ -27,43 +27,110 @@ pub const SCHED_RR: c_int = 1;
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pub const SCHED_OTHER: c_int = 2;
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/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/sched_get_priority_max.html>.
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-// #[unsafe(no_mangle)]
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+#[unsafe(no_mangle)]
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pub extern "C" fn sched_get_priority_max(policy: c_int) -> c_int {
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- todo!()
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+ match policy {
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+ SCHED_FIFO | SCHED_RR => 99,
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+ SCHED_OTHER => 0,
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+ _ => {
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+ crate::platform::ERRNO.set(crate::header::errno::EINVAL);
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+ -1
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+ }
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+ }
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}
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-/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/sched_get_priority_max.html>.
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-// #[unsafe(no_mangle)]
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+/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/sched_get_priority_min.html>.
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+#[unsafe(no_mangle)]
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pub extern "C" fn sched_get_priority_min(policy: c_int) -> c_int {
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- todo!()
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+ match policy {
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+ SCHED_FIFO | SCHED_RR => 1,
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+ SCHED_OTHER => 0,
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+ _ => {
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+ crate::platform::ERRNO.set(crate::header::errno::EINVAL);
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+ -1
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+ }
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+ }
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}
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/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/sched_getparam.html>.
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-// #[unsafe(no_mangle)]
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+#[unsafe(no_mangle)]
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pub unsafe extern "C" fn sched_getparam(pid: pid_t, param: *mut sched_param) -> c_int {
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- todo!()
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+ if pid != 0 {
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+ crate::platform::ERRNO.set(crate::header::errno::ESRCH);
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+ return -1;
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+ }
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+ crate::platform::ERRNO.set(crate::header::errno::ENOSYS);
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+ -1
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+}
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+
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+/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/sched_getscheduler.html>.
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+#[unsafe(no_mangle)]
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+pub extern "C" fn sched_getscheduler(pid: pid_t) -> c_int {
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+ if pid != 0 {
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+ crate::platform::ERRNO.set(crate::header::errno::ESRCH);
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+ return -1;
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+ }
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+ crate::platform::ERRNO.set(crate::header::errno::ENOSYS);
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+ -1
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}
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/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/sched_rr_get_interval.html>.
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-// #[unsafe(no_mangle)]
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-pub extern "C" fn sched_rr_get_interval(pid: pid_t, time: *const timespec) -> c_int {
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- todo!()
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+#[unsafe(no_mangle)]
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+pub extern "C" fn sched_rr_get_interval(pid: pid_t, tp: *mut timespec) -> c_int {
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+ if pid != 0 {
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+ crate::platform::ERRNO.set(crate::header::errno::ESRCH);
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+ return -1;
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+ }
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+ if tp.is_null() {
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+ crate::platform::ERRNO.set(crate::header::errno::EINVAL);
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+ return -1;
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+ }
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+ unsafe {
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+ (*tp).tv_sec = 0;
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+ (*tp).tv_nsec = 100_000_000; // 100ms default SCHED_RR quantum
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+ }
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+ 0
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}
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/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/sched_setparam.html>.
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-// #[unsafe(no_mangle)]
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-pub unsafe extern "C" fn sched_setparam(pid: pid_t, param: *const sched_param) -> c_int {
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- todo!()
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+#[unsafe(no_mangle)]
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+pub unsafe extern "C" fn sched_setparam(pid: pid_t, _param: *const sched_param) -> c_int {
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+ if pid != 0 {
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+ crate::platform::ERRNO.set(crate::header::errno::ESRCH);
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+ return -1;
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+ }
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+ crate::platform::ERRNO.set(crate::header::errno::ENOSYS);
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+ -1
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}
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/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/sched_setscheduler.html>.
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-// #[unsafe(no_mangle)]
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+#[unsafe(no_mangle)]
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pub extern "C" fn sched_setscheduler(
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pid: pid_t,
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policy: c_int,
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param: *const sched_param,
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) -> c_int {
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- todo!()
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+ if pid != 0 {
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+ crate::platform::ERRNO.set(crate::header::errno::ESRCH);
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+ return -1;
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+ }
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+ match policy {
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+ SCHED_OTHER => {
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+ if !param.is_null() && unsafe { (*param).sched_priority } != 0 {
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+ crate::platform::ERRNO.set(crate::header::errno::EINVAL);
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+ return -1;
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+ }
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+ SCHED_OTHER
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+ }
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+ SCHED_FIFO | SCHED_RR => {
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+ crate::platform::ERRNO.set(crate::header::errno::ENOSYS);
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+ -1
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+ }
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+ _ => {
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+ crate::platform::ERRNO.set(crate::header::errno::EINVAL);
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+ -1
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+ }
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+ }
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}
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/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/sched_yield.html>.
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