Updates on PEP 556

pep-0556.rst

@@ -117,6 +117,18 @@ should probably not mess with this setting, just as they shouldn't call
 doing so.
 
 
+Non-goals
+=========
+
+This PEP does not address reentrancy issues with other kinds of
+asynchronous code execution (for example signal handlers registered
+with the ``signal`` module).  The author believes that the overwhelming
+majority of painful reentrancy issues occur with finalizers.  Most of the
+time, signal handlers are able to set a single flag and/or wake up a
+file descriptor for the main program to notice.  As for those signal
+handlers which raise an exception, they *have* to execute in-thread.
+
+
 Internal details
 ================
 
@@ -274,7 +286,7 @@ and live inside the ``gc`` module, unless otherwise noted:
            if gc_is_threaded == True:
                # Wake up thread, asking it to end
                gc_is_threaded = False
-               gc_thread..wakeup.release()
+               gc_thread.wakeup.release()
                # Wait for thread exit
                Py_BEGIN_ALLOW_THREADS
                gc_thread.done.acquire()