Copilot fixes

Author: badicsalex

library/std/src/sys/pal/xous/time.rs

@@ -14,7 +14,7 @@ pub const UNIX_EPOCH: SystemTime = SystemTime(Duration::from_secs(0));
 impl Instant {
     pub fn now() -> Instant {
         let result = blocking_scalar(ticktimer_server(), ElapsedNs.into())
-            .expect("failed to request elapsed_ms");
+            .expect("failed to request elapsed");
         let lower = result[0];
         let upper = result[1];
         Instant { 0: Duration::from_nanos(lower as u64 | (upper as u64) << 32) }

library/std/src/sys/sync/condvar/xous.rs

@@ -62,7 +62,7 @@ impl Condvar {
     // Returns false on timeout
     pub unsafe fn wait_timeout(&self, mutex: &Mutex, dur: Duration) -> bool {
         let mut nanos = dur.as_nanos() as u64;
-        // Ensure we don't wait for 0 ms, which would cause us to wait forever
+        // Ensure we don't send zero as parameter, as it could be handled special in the future.
         if nanos == 0 {
             nanos = 1;
         }

library/std/src/sys/sync/thread_parking/xous.rs

@@ -30,10 +30,12 @@ impl Parker {
         self.mtx.unlock();
     }
 
-    pub unsafe fn park_timeout(self: Pin<&Self>, timeout: Duration) {
+    pub unsafe fn park_timeout(self: Pin<&Self>, mut timeout: Duration) {
         self.mtx.lock();
-        while !self.token.load(Ordering::SeqCst) {
+        while timeout > Duration::ZERO && !self.token.load(Ordering::SeqCst) {
+            let start = crate::time::Instant::now();
             self.condvar.wait_timeout(&self.mtx, timeout);
+            timeout = timeout.saturating_sub(start.elapsed());
         }
         self.token.store(false, Ordering::SeqCst);
         self.mtx.unlock();