loop.time: Don't use libuv's time cache (issue #29)

Author: 1st1

tests/test_base.py

@@ -59,6 +59,15 @@ def cb():
 
         self.assertFalse(self.loop.is_closed())
 
+    def test_now_update(self):
+        async def run():
+            st = self.loop.time()
+            time.sleep(0.05)
+            return self.loop.time() - st
+
+        delta = self.loop.run_until_complete(run())
+        self.assertTrue(delta > 0.049 and delta < 0.6)
+
     def test_call_later(self):
         calls = []
 

uvloop/includes/uv.pxd

@@ -264,6 +264,7 @@ cdef extern from "uv.h" nogil:
     int uv_loop_close(uv_loop_t* loop)
     int uv_loop_alive(uv_loop_t* loop)
 
+    void uv_update_time(uv_loop_t* loop)
     uint64_t uv_now(const uv_loop_t*)
 
     int uv_run(uv_loop_t*, uv_run_mode mode) nogil

uvloop/loop.pyx

@@ -395,6 +395,8 @@ cdef class Loop:
             executor.shutdown(wait=False)
 
     cdef uint64_t _time(self):
+        # asyncio doesn't have a time cache, neither should uvloop.
+        uv.uv_update_time(self.uvloop)  # void
         return uv.uv_now(self.uvloop)
 
     cdef inline _queue_write(self, UVStream stream):