[pulseaudio-discuss] [PATCH] rtpoll-better-support-for-DEBUG_TIMING-logs

[pl bossart]

On all the platforms I tested, PulseAudio is frequently awaken and
doesn't sleep for the duration specified for the poll timeout.
Sometimes wake-ups occur within milliseconds of the poll call for no
good reason; this seems to be related to ALSA issues (see my posts on
the ALSA mailing list on null poll events).
This patch enables a better log of requested sleep times v. actual
sleep times. Enable DEBUG_TIMING to see actual messages. Please let me
know if you see odd behaviors like the one below
- Pierre

E: rtpoll.c: rtpoll_run
E: rtpoll.c: poll timeout: 188 ms
E: rtpoll.c: Process time 0 ms; sleep time 48 ms
E: rtpoll.c: rtpoll_run
E: rtpoll.c: rtpoll finish
E: rtpoll.c: rtpoll_run
E: rtpoll.c: poll timeout: 139 ms
E: rtpoll.c: Process time 0 ms; sleep time 49 ms
E: rtpoll.c: rtpoll_run
E: rtpoll.c: rtpoll finish
E: rtpoll.c: rtpoll_run
E: rtpoll.c: poll timeout: 189 ms
E: rtpoll.c: Process time 0 ms; sleep time 0 ms
E: rtpoll.c: rtpoll_run
E: rtpoll.c: rtpoll finish
E: rtpoll.c: rtpoll_run
E: rtpoll.c: poll timeout: 189 ms
E: rtpoll.c: Process time 0 ms; sleep time 49 ms
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