fix: improve parallel processes cleanup

fastembed/parallel_processor.py

@@ -215,10 +215,14 @@ def semi_ordered_map(
                 # join would wait forever for processes blocked on the input queue.
                 self.emergency_shutdown = True
                 self.join_or_terminate()
-                # Nothing reads the input pipe anymore, so the feeder thread can be stuck writing to it,
-                # holding every batch it hasn't sent. Closing our read end fails that write with EPIPE and
-                # lets the thread exit, same as Queue._terminate_broken() in python 3.12+.
-                self.input_queue._reader.close()  # type: ignore[attr-defined]
+                # Nothing reads the input pipe anymore, so the feeder thread can be stuck
+                # writing to it, holding every item it hasn't sent. On POSIX, closing our
+                # read end fails that write with EPIPE; Windows also needs to cancel the send.
+                terminate_broken = getattr(self.input_queue, "_terminate_broken", None)
+                if terminate_broken is not None:
+                    terminate_broken()
+                else:
+                    self.input_queue._reader.close()  # type: ignore[attr-defined]
             self.input_queue.close()
             self.output_queue.close()
             if self.emergency_shutdown: