feat(extensions): most of the extensions implementation, by kdb424

kmk/kmktime.py

@@ -1,29 +1,23 @@
-import math
 import time
 
-USE_UTIME = False
-
 
 def sleep_ms(ms):
-    '''
-    Tries to sleep for a number of milliseconds in a cross-implementation
-    way. Will raise an ImportError if time is not available on the platform.
-    '''
-    if USE_UTIME:
-        return time.sleep_ms(ms)
-    else:
-        return time.sleep(ms / 1000)
+    return time.sleep(ms / 1000)
 
 
 def ticks_ms():
-    if USE_UTIME:
-        return time.ticks_ms()
-    else:
-        return math.floor(time.monotonic() * 1000)
+    '''Has .25s granularity, but is cheap'''
+    return time.monotonic() * 1000
 
 
 def ticks_diff(new, old):
-    if USE_UTIME:
-        return time.ticks_diff(new, old)
-    else:
-        return new - old
+    return new - old
+
+
+def accurate_ticks():
+    '''Is more expensive, but good for time critical things'''
+    return time.monotonic_ns()
+
+
+def accurate_ticks_diff(new, old, ms):
+    return bool(new - old < ms * 1000000)