[lwip-devel] [bug #40245] unix port minimal project has abundant timers

[chrysn]

Follow-up Comment #2, bug #40245 (project lwip):

how could i resist such a nice smiley? ;-)

the patches created for this are threefold:

* 0001-minimal-patch-to-fix-40245.patch just solves the issue at hand, but the
main loop stays relatively complex, and snmp application-level functionality
stays intermingled with the interrupt handling.
* 0002-further-simplification-on-the-minimal-unix-example.patch does away with
all custom timer handling, leaving the main loop at `while(1) {
mintapif_select(&netif); sys_check_timeouts(); }` -- it uses the select call
to sleep until the next timeout is due, but requires
* 0001-introduce-sys_timeouts_sleeptime.patch on lwip, which adds a NO_SYS=1
function sys_timeouts_sleeptime (which i'd need on microprocessors too
anyway).

the lwip patch can't do any harm for it's just a new function; the new version
of mintapif works well for me, but i have to admit i did not test it with
bigger applications and did not access snmp.

(if you are more familiar with snmp, you might know how strict the
requirements on uptime are; now that we don't need the regular wakeups any
more, they feel like more overhead than before ... but that's really out of
scope here.)

(file #30621, file #30622, file #30623)
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Additional Item Attachment:

File name: 0001-introduce-sys_timeouts_sleeptime.patch Size:1 KB
File name: 0002-further-simplification-on-the-minimal-unix-example.patch
Size:8 KB
File name: 0001-minimal-patch-to-fix-40245.patch Size:4 KB


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