[lwip-devel] [bug #1902] Timeouts and semaphores/mailboxes are too tightly integrated

[Simon Goldschmidt]

Follow-up Comment #20, bug #1902 (project lwip):

>As I said we can worry about the specific implementation some other time (or
if there's no demand, I guess never!).

I would rather solve this now or insist on 32-bit timers. The problem is that
with 16-bit hardware timers and 10 ms ticks (which is only an example, most
hardware timers have some odd frequency), the maximum wait time
(MAX(s16_t)/100 = max_sec) would be ~330 seconds which is 5 minutes (which
_is_ enough for DHCP but not that far away from it!)...

For user-sleeps, we could chain s16_t sleeps to be long enough. For lwIP
timers, this does not work: since we don't wait for the time-ticks, a
wraparound can always occur.

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