[Swan-commit] Changes to ref refs/heads/main

[Andrew Cagney]

New commits:
commit 6e1b30da63a18508e8af039b2f1e09e58764819e
Author: Andrew Cagney <cagney at gnu.org>
Date:   Sun Dec 12 19:31:51 2021 -0500

    events: embed the event in struct fd_listener

commit d4cb0df9d366bc1a7bb8b3452378d3c0ce45a6a4
Author: Andrew Cagney <cagney at gnu.org>
Date:   Sun Dec 12 15:00:13 2021 -0500

    events: turn add_fd_read_event_handler() into add_fd_read_listener()
    
    pass the logger to the callback

commit 4fdaf1c09b4435563f13ea959e98bf185252c874
Author: Andrew Cagney <cagney at gnu.org>
Date:   Sun Dec 12 14:43:01 2021 -0500

    events: add fd_read_event_cb, use as type of tcp/udp socket read listeners
    
    includes the logger as a parameter

commit d97f0a0785b3ebe8b72b3f952187644cfdec49c0
Author: Andrew Cagney <cagney at gnu.org>
Date:   Sun Dec 12 13:58:45 2021 -0500

    events: struct fd_event -> struct fd_read_listener
    
    "listener" is taken from libevent

commit 18758923c0b066b61c5df3252a2ec6e69cd9cb8e
Author: Andrew Cagney <cagney at gnu.org>
Date:   Sun Dec 12 13:57:56 2021 -0500

    events: in add_fd_read_event_handler() directly call libevent
    
    not via attach_fd_read_sensor()