lwip_selscan() function

Go through the readset and writeset lists and see which socket of the sockets set in the sets has events. On return, readset, writeset and exceptset have the sockets enabled that had events.

Syntax

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Summary

Declaration

from sockets.c:1834

static int lwip_selscan(int maxfdp1, fd_set *readset_in, fd_set *writeset_in, fd_set *exceptset_in, fd_set *readset_out, fd_set *writeset_out, fd_set *exceptset_out);

Arguments

Argument

Description

maxfdp1

the highest socket index in the sets

readset_in

set of sockets to check for read events

writeset_in

set of sockets to check for write events

exceptset_in

set of sockets to check for error events

readset_out

set of sockets that had read events

writeset_out

set of sockets that had write events

exceptset_out

set os sockets that had error events

Return value

number of sockets that had events (read/write/exception) (>= 0)

Examples

References

from examples

lwip_selscan() function

Syntax

Arguments

Return value

Examples

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