lidavidm commented on a change in pull request #12260:
URL: https://github.com/apache/arrow/pull/12260#discussion_r792106021
##########
File path: python/pyarrow/tests/util.py
##########
@@ -329,3 +330,22 @@ def get_raise_signal():
def raise_signal(signum):
os.kill(os.getpid(), signum)
return raise_signal
+
+
+@contextlib.contextmanager
+def signal_wakeup_fd(*, warn_on_full_buffer=False):
+ # Use a socket pair, rather a self-pipe, so that select() can be used
+ # on Windows.
+ r, w = socket.socketpair()
+ old_fd = None
+ try:
+ r.setblocking(False)
+ w.setblocking(False)
+ old_fd = signal.set_wakeup_fd(
+ w.fileno(), warn_on_full_buffer=warn_on_full_buffer)
+ yield r
+ finally:
+ if old_fd is not None:
Review comment:
Ah, got it, makes sense.
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