[lwip-devel] [bug #19816] Stop the tcpip_thread

[Simon Goldschmidt]

Follow-up Comment #1, bug #19816 (project lwip):

Hehe, when beginning to work with lwIP ports, I asked myself why there is no
such thing like sys_thread_delete()...

The answer is that most embedded systems don't need to gracefully shutdown,
but if you need it, why not implement it...

All you would need is a new message the tells tcpip_thread to exit the loop.
But care has to be taken with the ports. I don't think that every port is
tested to cope with thread functions returning...
In my port, there is an ASSERT if a thread function returns. This would have
to be changed to delete the thread when its function returns.

Also, you have to make sure you stop all socket/netconn threads first so they
don't sleep forever waiting for an answer from tcpip_thread.

Next, network drivers might need a stop() function?

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