You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
|
|
|
|
.TH io_getcookie 3
|
|
|
|
|
.SH NAME
|
|
|
|
|
io_getcookie \- retrieve cookie
|
|
|
|
|
.SH SYNTAX
|
|
|
|
|
.B #include <libowfat/io.h>
|
|
|
|
|
|
|
|
|
|
void* \fBio_getcookie\fP(int64 fd);
|
|
|
|
|
.SH 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.
|
|
|
|
|
.SH "SEE ALSO"
|
|
|
|
|
io_wait(3), io_setcookie(3)
|
