implement housekeeping for posix timers

src/header/time/mod.rs

@@ -60,7 +60,6 @@ pub(crate) struct timer_internal_t {
     pub eventfd: usize,
     pub evp: sigevent,
     pub thread: platform::types::pthread_t,
-    pub caller_thread: crate::pthread::OsTid,
     /// relibc handles it_interval, not the kernel
     pub next_wake_time: itimerspec,
     /// kernel does not support unregistering timer
@@ -72,8 +71,8 @@ pub(crate) struct timer_internal_t {
 
 #[cfg(target_os = "redox")]
 impl timer_internal_t {
-    pub unsafe fn from_raw(timerid: timer_t) -> &'static Mutex<Self> {
-        unsafe { &*(timerid as *const Mutex<Self>) }
+    pub unsafe fn from_raw(timerid: timer_t) -> &'static mut Self {
+        unsafe { &mut *(timerid as *mut Self) }
     }
 }
 

src/header/unistd/alarm.rs

@@ -1,5 +1,3 @@
-#[cfg(target_os = "redox")]
-use crate::header::time::timer_internal_t;
 use crate::{
     header::{
         bits_timespec::timespec,
@@ -80,15 +78,6 @@ pub fn alarm_timespec(duration: timespec) -> c_uint {
             return remaining;
         }
 
-        // Enable process-wide signal delivery instead of thread-specific
-        #[cfg(target_os = "redox")]
-        {
-            let timer_ptr = unsafe { timer_internal_t::from_raw(timer_id) };
-            let mut timer_st = timer_ptr.lock();
-            timer_st.process_pid = Sys::getpid();
-            drop(timer_st);
-        }
-
         *guard = Some(AlarmTimer(timer_id));
     }