Select loop abstraction

Files
file	select.h
	select loop abstraction
file	select.c
	select loop abstraction

Data Structures
struct	osmo_fd
	Structure representing a file dsecriptor. More...

Macros
#define	BSC_FD_READ   0x0001
	Indicate interest in reading from the file descriptor.
#define	BSC_FD_WRITE   0x0002
	Indicate interest in writing to the file descriptor.
#define	BSC_FD_EXCEPT   0x0004
	Indicate interest in exceptions from the file descriptor.

Functions
bool	osmo_fd_is_registered (struct osmo_fd *fd)
	Check if a file descriptor is already registered.
int	osmo_fd_register (struct osmo_fd *fd)
	Register a new file descriptor with select loop abstraction.
void	osmo_fd_unregister (struct osmo_fd *fd)
	Unregister a file descriptor from select loop abstraction.
int	osmo_select_main (int polling)
	select main loop integration
struct osmo_fd *	osmo_fd_get_by_fd (int fd)
	find an osmo_fd based on the integer fd
int	osmo_fd_fill_fds (void *readset, void *writeset, void *exceptset)
int	osmo_fd_disp_fds (void *readset, void *writeset, void *exceptset)
static	LLIST_HEAD (osmo_fds)

Variables
static int	maxfd = 0
static int	unregistered_count

Detailed Description

Function Documentation

osmo_fd_get_by_fd()

struct osmo_fd * osmo_fd_get_by_fd

(

int

fd

)

find an osmo_fd based on the integer fd

Parameters

[in]

fd

file descriptor to use as search key

Returns

osmo_fd for fd; NULL in case it doesn't exist

References osmo_fd::fd, osmo_fd::list, and llist_for_each_entry.

osmo_fd_is_registered()

bool osmo_fd_is_registered

(

struct osmo_fd *

fd

)

Check if a file descriptor is already registered.

Parameters

[in]

fd

osmocom file descriptor to be checked

Returns

true if registered; otherwise false

References osmo_fd::fd, osmo_fd::list, and llist_for_each_entry.

Referenced by osmo_fd_register().

osmo_fd_register()

int osmo_fd_register

(

struct osmo_fd *

fd

)

Register a new file descriptor with select loop abstraction.

Parameters

[in]

fd

osmocom file descriptor to be registered

Returns

0 on success; negative in case of error

References osmo_fd::fd, llist_add_tail(), and osmo_fd_is_registered().

Referenced by gsmtap_source_add_sink(), gsmtap_source_init(), and osmo_fd_init_ofd().

osmo_fd_unregister()

void osmo_fd_unregister

(

struct osmo_fd *

fd

)

Unregister a file descriptor from select loop abstraction.

Parameters

[in]

fd

osmocom file descriptor to be unregistered

References osmo_fd::fd, and llist_del().

osmo_select_main()

int osmo_select_main

(

int

polling

)

select main loop integration

Parameters

[in]

polling

should we pollonly (1) or block on select (0)

Returns

0 if no fd handled; 1 if fd handled; negative in case of error

References osmo_timers_nearest(), osmo_timers_prepare(), and osmo_timers_update().