[lwip-devel] Semaphores and socket.c's event_callback

[Samuel Thibault]

Hello,

src/api/sockets.c uses a semaphore (selectsem) for protecting critical
sections of select().  The result is that event_callback() may want to
sleep, which is a problem if one wants to call event_callback() from an
interrupt handler for instance.  Since these are really only critical
sections, here is a patch which makes use of SYS_ARCH_PROTECT() which
doesn't pose such problem.

Samuel

patch
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