sem.h File Reference

#include <pbl/kernel/types.h>

Data Structures
struct	pbl_sem
	Counting semaphore. More...

Macros
#define	PBL_SEM_INITIALIZER(init, lim)    {.initial = (init), .limit = (lim), .backend = PBL_SEM_BACKEND_INITIALIZER(init)}
	Static initializer for a semaphore.
#define	PBL_SEM_DEFINE(name, initial, limit)    struct pbl_sem name = PBL_SEM_INITIALIZER(initial, limit)
	Define a semaphore, usable without pbl_sem_init().

Functions
void	pbl_sem_init (struct pbl_sem *s, uint32_t initial, uint32_t limit)
	Initialize a semaphore in dynamically allocated memory.
void	pbl_sem_deinit (struct pbl_sem *s)
	Release a semaphore before its memory is reused.
int	pbl_sem_take (struct pbl_sem *s, pbl_timeout_t timeout)
	Take a token.
void	pbl_sem_give (struct pbl_sem *s)
	Give a token.
void	pbl_sem_reset (struct pbl_sem *s)
	Set the count back to its initial value.
uint32_t	pbl_sem_count (const struct pbl_sem *s)
	Get the current count.