NAME

       io_getcookie - retrieve cookie

SYNTAX

       #include <io.h>

       void* io_getcookie(int64 fd);

DESCRIPTION

       io_getcookie  retrieves  a cookie (pointer to some anonymous data structure you associated
       with this descriptor).

       Use io_setcookie(3) to associate a cookie with a descriptor.

       If you did not associate a cookie with this descriptor, io_getcookie returns NULL.

       The idea is that you put the state associated with a TCP connection you serve in a  common
       struct.   Then you do not need to have your own data structure to retrieve the state for a
       connection, you can just use the data structure io_wait  already  maintains.   The  lookup
       works in constant time and should not cause any cache misses.

SEE ALSO

       io_wait(3), io_setcookie(3)

                                                                                  io_getcookie(3)