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[lwip-devel] [patch #9283] Returning access modes with fcntl

From: Simon Goldschmidt
Subject: [lwip-devel] [patch #9283] Returning access modes with fcntl
Date: Tue, 28 Mar 2017 16:27:21 -0400 (EDT)
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36

Follow-up Comment #10, patch #9283 (project lwip):

That looks a bit better.

> About the lock, I think I need your help here.

While a socket is only accessed from a single thread (although it is by now
not limited to that any more), the underlying pcb is accessed from
tcpip_thread as well. It can even be deallocated asynchronously (e.g. RST
received, pcb closed in favour to allocating a higher prio pcb).


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