kernel_2semaphore_8h_source.html

 #ifndef __KERNEL_SEMAPHORE_H__

 #define __KERNEL_SEMAPHORE_H__


 #include <stdint.h>


 #include <common/list.h>


 struct semaphore {

     int32_t count;

     struct list_head wait_list;

 };


 void sema_init(struct semaphore *sem, int val);


 int down(struct semaphore *sem);


 int down_trylock(struct semaphore *sem);


 int up(struct semaphore *sem);


 #endif

up
int up(struct semaphore *sem)
Increase the number of the semaphore.
Definition: semaphore.c:63

down
int down(struct semaphore *sem)
Decrease the number of the semaphore.
Definition: semaphore.c:23

sema_init
void sema_init(struct semaphore *sem, int val)
Initialize the semaphore.
Definition: semaphore.c:17

down_trylock
int down_trylock(struct semaphore *sem)
The same as down(), except that if the decrement cannot be immediately performed, then call returns a...
Definition: semaphore.c:43

list.h

list_head
Definition: list.h:111

semaphore
Definition: semaphore.h:11