vasilito
530eb841db
P3-fenv: x86_64 SSE/x87 inline asm for 10 FP environment functions (feclearexcept, fegetenv, fegetexceptflag, fegetround, feholdexcept, feraiseexcept, fesetenv, fesetexceptflag, fesetround, fetestexcept, feupdateenv) with proper MXCSR and x87 CW register access. P3-sched: 6 scheduler functions (sched_get_priority_max/min, sched_getparam, sched_rr_get_interval, sched_setparam, sched_setscheduler) with EINVAL for bad policy and no-op validation since Redox has no real-time scheduler.
125 lines
3.7 KiB
Diff
125 lines
3.7 KiB
Diff
diff --git a/src/header/sched/mod.rs b/src/header/sched/mod.rs
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--- a/src/header/sched/mod.rs
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+++ b/src/header/sched/mod.rs
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@@ -2,9 +2,11 @@
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//!
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//! See <https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/sched.h.html>.
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use crate::{
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error::ResultExt,
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- header::bits_timespec::timespec,
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+ header::{bits_timespec::timespec, errno},
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platform::{
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- Pal, Sys,
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+ self, Pal, Sys,
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types::{c_int, pid_t},
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},
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};
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@@ -29,42 +31,67 @@
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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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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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+ platform::ERRNO.set(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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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 => 0,
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+ SCHED_OTHER => 0,
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+ _ => {
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+ platform::ERRNO.set(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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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 param.is_null() {
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+ platform::ERRNO.set(errno::EINVAL);
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+ return -1;
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+ }
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+ // Redox has no real-time scheduler; return default params
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+ (*param).sched_priority = 0;
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+ 0
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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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+ if time.is_null() {
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+ platform::ERRNO.set(errno::EINVAL);
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+ return -1;
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+ }
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+ // Redox has no real-time scheduler; report a nominal 1-second round-robin interval
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+ unsafe {
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+ (*(time as *mut timespec)).tv_sec = 1;
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+ (*(time as *mut timespec)).tv_nsec = 0;
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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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+ if param.is_null() {
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+ platform::ERRNO.set(errno::EINVAL);
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+ return -1;
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+ }
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+ let priority = (*param).sched_priority;
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+ if priority < 0 || priority > 99 {
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+ platform::ERRNO.set(errno::EINVAL);
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+ return -1;
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+ }
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+ // Redox has no real-time scheduler; validate and succeed as a no-op
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+ 0
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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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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 param.is_null() {
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+ platform::ERRNO.set(errno::EINVAL);
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+ return -1;
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+ }
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+ match policy {
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+ SCHED_FIFO | SCHED_RR | SCHED_OTHER => {
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+ let priority = unsafe { (*param).sched_priority };
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+ if priority < 0 || priority > 99 {
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+ platform::ERRNO.set(errno::EINVAL);
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+ return -1;
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+ }
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+ // Redox has no real-time scheduler; validate and succeed as a no-op
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+ 0
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+ }
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+ _ => {
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+ platform::ERRNO.set(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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