Zephyr API Documentation 4.0.0-rc3
A Scalable Open Source RTOS
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sem.h File Reference

public sys_sem APIs. More...

Go to the source code of this file.

Data Structures

struct  sys_sem
 sys_sem structure More...
 

Macros

#define SYS_SEM_DEFINE(_name, _initial_count, _count_limit)
 Statically define and initialize a sys_sem.
 
#define SYS_SEM_LOCK_BREAK   continue
 Leaves a code block guarded with SYS_SEM_LOCK after releasing the lock.
 
#define SYS_SEM_LOCK(sem)
 Guards a code block with the given sys_sem, automatically acquiring the semaphore before executing the code block.
 

Functions

int sys_sem_init (struct sys_sem *sem, unsigned int initial_count, unsigned int limit)
 Initialize a semaphore.
 
int sys_sem_give (struct sys_sem *sem)
 Give a semaphore.
 
int sys_sem_take (struct sys_sem *sem, k_timeout_t timeout)
 Take a sys_sem.
 
unsigned int sys_sem_count_get (struct sys_sem *sem)
 Get sys_sem's value.
 

Detailed Description

public sys_sem APIs.