1 files changed, 0 insertions, 55 deletions
diff --git a/extmod/uasyncio/lock.py b/extmod/uasyncio/lock.py
deleted file mode 100644
index 85a9437b4f..0000000000
--- a/extmod/uasyncio/lock.py
+++ /dev/null
@@ -1,55 +0,0 @@
-# MicroPython uasyncio module
-# MIT license; Copyright (c) 2019-2020 Damien P. George
-
-from . import core
-
-
-# Lock class for primitive mutex capability
-class Lock:
-    def __init__(self):
-        # The state can take the following values:
-        # - 0: unlocked
-        # - 1: locked
-        # - <Task>: unlocked but this task has been scheduled to acquire the lock next
-        self.state = 0
-        # Queue of Tasks waiting to acquire this Lock
-        self.waiting = core.TaskQueue()
-
-    def locked(self):
-        return self.state == 1
-
-    def release(self):
-        if self.state != 1:
-            raise RuntimeError("Lock not acquired")
-        if self.waiting.peek():
-            # Task(s) waiting on lock, schedule next Task
-            self.state = self.waiting.pop()
-            core._task_queue.push(self.state)
-        else:
-            # No Task waiting so unlock
-            self.state = 0
-
-    # async
-    def acquire(self):
-        if self.state != 0:
-            # Lock unavailable, put the calling Task on the waiting queue
-            self.waiting.push(core.cur_task)
-            # Set calling task's data to the lock's queue so it can be removed if needed
-            core.cur_task.data = self.waiting
-            try:
-                yield
-            except core.CancelledError as er:
-                if self.state == core.cur_task:
-                    # Cancelled while pending on resume, schedule next waiting Task
-                    self.state = 1
-                    self.release()
-                raise er
-        # Lock available, set it as locked
-        self.state = 1
-        return True
-
-    async def __aenter__(self):
-        return await self.acquire()
-
-    async def __aexit__(self, exc_type, exc, tb):
-        return self.release()