add get_running_loop(); remove ThreadSafeFlag

Author: dhalbert

Diff for: asyncio/core.py

@@ -446,6 +446,19 @@ def get_event_loop(runq_len=0, waitq_len=0):
 
     return Loop
 
+# CIRCUITPY-CHANGE: added, to match CPython
+def get_running_loop():
+    """Return the event loop used to schedule and run tasks. See `Loop`."""
+
+    return Loop
+
+
+def get_event_loop(runq_len=0, waitq_len=0):
+    # CIRCUITPY-CHANGE: doc
+    """Return the event loop used to schedule and run tasks. See `Loop`. Deprecated and will be removed later."""
+
+    # CIRCUITPY-CHANGE
+    return get_running_loop()
 
 def current_task():
     # CIRCUITPY-CHANGE: doc

Diff for: asyncio/event.py

@@ -72,32 +72,4 @@ async def wait(self):
         return True
 
 
-# MicroPython-extension: This can be set from outside the asyncio event loop,
-# such as other threads, IRQs or scheduler context. Implementation is a stream
-# that asyncio will poll until a flag is set.
-# Note: Unlike Event, this is self-clearing after a wait().
-try:
-    import io
-
-    class ThreadSafeFlag(io.IOBase):
-        def __init__(self):
-            self.state = 0
-
-        def ioctl(self, req, flags):
-            if req == 3:  # MP_STREAM_POLL
-                return self.state * flags
-            return -1  # Other requests are unsupported
-
-        def set(self):
-            self.state = 1
-
-        def clear(self):
-            self.state = 0
-
-        async def wait(self):
-            if not self.state:
-                yield core._io_queue.queue_read(self)
-            self.state = 0
-
-except ImportError:
-    pass
+# CIRCUITPY: remove ThreadSafeFlag