oSIP semaphore definitions

Classes
struct	osip_sem

Functions
struct osip_sem *	osip_sem_init (unsigned int value)
int	osip_sem_destroy (struct osip_sem *sem)
int	osip_sem_post (struct osip_sem *sem)
int	osip_sem_wait (struct osip_sem *sem)
int	osip_sem_trywait (struct osip_sem *sem)

Detailed Description

Function Documentation

osip_sem_destroy()

int osip_sem_destroy

(

struct osip_sem *

sem

)

Destroy a semaphore.

Parameters

sem	The semaphore to destroy.

Referenced by osip_fifo_free().

osip_sem_init()

struct osip_sem* osip_sem_init

(

unsigned int

value

)

Allocate and Initialise a semaphore.

Parameters

value

The initial value for the semaphore.

Referenced by osip_fifo_init().

osip_sem_post()

int osip_sem_post

(

struct osip_sem *

sem

)

Post operation on a semaphore.

Parameters

sem	The semaphore to destroy.

Referenced by osip_fifo_add(), and osip_fifo_insert().

osip_sem_trywait()

int osip_sem_trywait

(

struct osip_sem *

sem

)

Wait operation on a semaphore. NOTE: if the semaphore is at 0, this call won't block.

Parameters

sem	The semaphore to destroy.

Referenced by osip_fifo_tryget().

osip_sem_wait()

int osip_sem_wait

(

struct osip_sem *

sem

)

Wait operation on a semaphore. NOTE: this call will block if the semaphore is at 0.

Parameters

sem	The semaphore to destroy.

Referenced by osip_fifo_get().