agent: Avoid tight timer tick when possible.
* agent/gpg-agent.c (need_tick): Evaluate whether the short-phase handle_tick() is needed. (handle_connections): On each cycle of the select loop, adjust whether we should call handle_tick() or not. (start_connection_thread_ssh, do_start_connection_thread): Signal the main loop when the child terminates. * agent/call-scd.c (start_scd): Call interrupt_main_thread_loop() once the scdaemon thread context has started up.
With this change, an idle gpg-agent that has no scdaemon running only
wakes up once a minute (to check_own_socket).
Thanks to Ian Jackson and NIIBE Yutaka who helped me improve some of
the blocking and corner cases.
Gbp-Pq: Topic gpg-agent-idling
Gbp-Pq: Name agent-Avoid-tight-timer-tick-when-possible.patch
- Signed-off-by: Daniel Kahn Gillmor <email@example.com>