timer: change mp_sleep_us to mp_sleep_ns

Linux and macOS already use nanosecond resolution for their sleep
functions. It was just being converted from microseconds before. Since
we have mp_time_ns now, go ahead and bump the precision here. The timer
for windows uses some timeBeginPeriod thing which I'm not sure what it
does really but whatever just convert the units to ms like they were
doing before. There's really no reason to keep the mp_sleep_us helper
around. A multiplication by 1000 is trivial and underlying OS clocks
have nanosecond precision.

1 files changed, 6 insertions, 6 deletions

diff --git a/osdep/timer-win2.c b/osdep/timer-win2.c
index dd7a42f0d1..db4c39d7ef 100644
--- a/osdep/timer-win2.c
+++ b/osdep/timer-win2.c
@@ -52,17 +52,17 @@ void mp_end_hires_timers(int res_ms)
 #endif
 }
 
-void mp_sleep_us(int64_t us)
+void mp_sleep_ns(int64_t ns)
 {
-    if (us < 0)
+    if (ns < 0)
         return;
     // Sleep(0) won't sleep for one clocktick as the unix usleep
     // instead it will only make the thread ready
     // it may take some time until it actually starts to run again
-    if (us < 1000)
-        us = 1000;
-    int hrt = mp_start_hires_timers(us / 1000);
-    Sleep(us / 1000);
+    if (ns < 1e6)
+        ns = 1e6;
+    int hrt = mp_start_hires_timers(ns / 1e6);
+    Sleep(ns / 1e6);
     mp_end_hires_timers(hrt);
 }