[lwip-devel] [bug #28775] select/event_callback: only check select_cb_list on change

[Simon Goldschmidt]

Update of bug #28775 (project lwip):

              Item Group:                    None => Change Request         
                  Status:                    None => Fixed                  
             Assigned to:                    None => goldsimon              
             Open/Closed:                    Open => Closed                 
         Planned Release:                         => 1.4.0                  

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Follow-up Comment #6:

Checked in:
- using SYS_LIGHTWEIGHT_PROT to protect the socket code (carefully chosen to
not disable interrupts for too long)
- added a counter to each socket that tells event_callback if anyone is
waiting using select, which speeds up receiving when noone is waiting

Tested with the tests-functions in contrib/apps/socket_examples.c.

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  <http://savannah.nongnu.org/bugs/?28775>

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