mirror of
https://github.com/matrix-construct/construct
synced 2024-11-30 10:42:47 +01:00
47 lines
1.3 KiB
Text
47 lines
1.3 KiB
Text
Overview of the filedescriptor subsystem
|
|
Adrian Chadd <adrian@creative.net.au>
|
|
|
|
$Id: fd-management.txt 6 2005-09-10 01:02:21Z nenolod $
|
|
|
|
|
|
Filedescriptor lists
|
|
--------------------
|
|
|
|
The filedescriptor list is managed through the routines in fdlist.c .
|
|
These include:
|
|
|
|
fd_open() - tag an FD as "open" and active
|
|
fd_close() - tag an FD as "closed" and close() the filedescriptor
|
|
fd_note() - update the filedescriptor tag
|
|
|
|
You can get the current list of open filedescriptors through /stats F as
|
|
an oper.
|
|
|
|
|
|
|
|
FD lists
|
|
--------
|
|
|
|
The FD list support is very alpha. There are a few lists defined:
|
|
|
|
typedef enum fdlist_t {
|
|
FDLIST_NONE,
|
|
FDLIST_SERVICE,
|
|
FDLIST_SERVER,
|
|
FDLIST_IDLECLIENT,
|
|
FDLIST_BUSYCLIENT,
|
|
FDLIST_MAX
|
|
} fdlist_t;
|
|
|
|
FDLIST_NONE Not on any list (ie close()d)
|
|
FDLIST_SERVICE A service - listen() sockets, resolver, etc
|
|
FDLIST_SERVER Server connections
|
|
FDLIST_IDLECLIENT An idle client
|
|
FDLIST_BUSYCLIENT A busy client
|
|
FDLIST_MAX Used for bounds checking
|
|
|
|
The idea is that the SERVICE sockets need polling frequently, the SERVER
|
|
sockets also need polling frequently, BUSYCLIENT is for busy clients
|
|
which need frequent polling (eg we're trying to write to them), and
|
|
IDLECLIENT is for clients which we don't need to poll frequently.
|
|
THIS hasn't been decided upon yet.
|