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Author: kumaraditya303

Lib/asyncio/events.py

@@ -668,6 +668,7 @@ def __init__(self):
         self._local = self._Local()
         if hasattr(os, 'fork'):
             def on_fork():
+                # Reset the loop and wakeupfd in the forked child process.
                 self._local = self._Local()
                 signal.set_wakeup_fd(-1)
 

Lib/test/test_asyncio/test_unix_events.py

@@ -1873,7 +1873,8 @@ async def runner():
 @unittest.skipUnless(hasattr(os, 'fork'), 'requires os.fork()')
 class TestFork(unittest.IsolatedAsyncioTestCase):
 
-    async def test_fork(self):
+    async def test_fork_not_share_event_loop(self):
+        # The forked process should not share the event loop with the parent
         loop = asyncio.get_running_loop()
         r, w = os.pipe()
         self.addCleanup(os.close, r)
@@ -1893,6 +1894,8 @@ async def test_fork(self):
             wait_process(pid, exitcode=0)
 
     def test_fork_signal_handling(self):
+        # Sending signals to the forked process should not affect the parent
+        # process.
         multiprocessing.set_start_method('fork')
         manager = multiprocessing.Manager()
         self.addCleanup(manager.shutdown)