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io_getcookie.3diet
Langue: en
Version: 290979 (debian - 07/07/09)
Section: 3 (Bibliothèques de fonctions)
Sommaire
NAME
io_getcookie - retrieve cookieSYNTAX
#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)Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre