[Python-ideas] Tulip patches

[Geert Jansen]

Hi,

[if this is not the right forum to post patches for tulip, please
redirect me to the correct one. There doesn't appear to be a mailing
list for tulip at the moment. And this list is where most/all of the
discussion is taking place.]

Please find attached 4 patches:

0001-run-fd-callbacks.patch

This patch will run callbacks for readers and writers in the same loop
iteration as when the fd got ready. Copying from my previous email,
this is to support the following idiom:

    # handle_read() sets the "ready" flag
    loop.add_reader(fd, handle_read)
    while not ready:
        loop.run_once()

The patch currently dispatches callbacks twice in each iteration, once
before blocking and once after. I tried to dispatch only once after
blocking, but this made the SSL transport test hang. The reason is
that the create_transport task is scheduled with call_soon(), and only
when the task first runs, a file descriptor is added. So unless you
dispatch before blocking, this task will never get started.

0002-call-every-iteration.patch

This adds a call_every_iteration() method to the event loop. This
callback runs *before* blocking.

0003-fix-typo.patch
0004-remove-wrong-comments.patch

Two trivial patches.

Regards,
Geert
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