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

[Atte Kojo]

Follow-up Comment #7, bug #1902 (project lwip):

Dmitry:
> sending a message per each tick is too expensive...

That isn't of course necessary. The timer with smallest interval is the TCP
fast timer with 250 ms resolution and all other timer intervals are multiples
of fast timer interval. Hence 250 ms is the minimum interval between two timer
messages.

Of course all timer processing could be done in the tick hook, but it would
cause all kinds of additional headaches. The timeout list would have to be
protected against concurrent accesses and the time spent in the OS tick
handler would increase.

But, as I said orignally, this is probably too intrusive, unless you want to
start developing version 2 of the stack.

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