Am 29.01.2020 um 16:37 schrieb matteo.c...@alice.it:
Dear all,
I would like to ask some questions about the thread-safe functions.
According the http://www.nongnu.org/lwip/2_0_x/pitfalls.html page, in
the OS mode, all the callback-style APIs function must only be called
from the TCPIP thread.
In the OS mode, the functions belongs to NETIF, DHCP, DNS, … modules
require corresponding thread-safe functions to be used from threads
different from TCPIP thread.
For example instead of calling directly the /netif_set_up/ function it’s
necessary use the /netifapi_netif_set_up/ function, or instead of
calling directly the /dhcp_start/ function it’s necessary use the
/netifapi_dhcp_start/ function.
I am looking for the thread-safe function corresponding to the
/dns_setserver /function. I am using LwIP 2.1.2, but I don’t find it.
I don't think such a function exists.
At this point I would know if there is a thread-safe function
corresponding to the /dns_setserver/ or if I should build a similar
function myself. In this last case, which function could I take as a model?.
The simple solution would be to enable LWIP_TCPIP_CORE_LOCKING and
surround your call with LOCK_TCPIP_CORE()/UNLOCK_TCPIP_CORE().
Regards,
Simon
Thanks in advance for your attention and for your suggestions.
Regards
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