I'm attempting to implement a true 2 thread version of simhost using the
sockets interface. To do that, I need to break into the tcpip_thread
loop and poll the hardware interface and then poll the message queue and
then loop (currently, simhost uses at least 3 threads).
However, sys_mbox_fetch is blocking with no timeout. It looks like I
need sys_mbox_fetch_timeout.
This scares me a bit.
Is sys_mbox_fetch just sys_mbox_fetch_timeout(mbox, msg, 0)? If so, why
the compile switch required to change between them? Why aren't *both*
functions provided? Why isn't sys_mbox_fetch implemented in terms of
sys_mbox_fetch_timeout?
Can I just use sys_mbox_fetch_timeout(mbox, msg, 1) to do what I want?
What are the downsides to this (other than high CPU and a 1 millisecond
lag before handling the next packet)?
Thanks,
-a
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