[lwip-devel] [bug #48568] timeouts does not support late firing properly

[Sylvain Rochet]

Follow-up Comment #3, bug #48568 (project lwip):

Absolute timers are great, and faster, because the comparison is obviously the
most simple comparison that could be made, well, at least, on 32-bit targets
(are there still users of lwIP on 8-bit platforms ?, that doesn't sound like a
good design choice nowadays ;-), I'm pretty none of us tried that for a long
time).

But, there is always a but, it means we need a new u32_t field in the timeout
struct to store the target time, so we can keep the timeout period, we need
that in order to be able to restart all timers on wakeup event for devices
that sleep, this is what the timeouts_last_time is currently used to. With
delta-diff timers we only need one variable, with absolute timers, we need one
"timeouts_last_time"-equivalent per timer.

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