rtapi_mutex - Mutex-related functions
#include <rtapi_mutex.h>
int
rtapi_mutex_try(unsigned long *mutex);
int rtapi_mutex_get(unsigned long *mutex);
int rtapi_mutex_give(unsigned long
*mutex);
|
mutex |
A pointer to the mutex. |
rtapi_mutex_try makes a non-blocking attempt to get the mutex. If the mutex is available, it returns 0, and the mutex is no longer available. Otherwise, it returns a nonzero value.
rtapi_mutex_get blocks until the mutex is available.
rtapi_mutex_give releases a mutex acquired by rtapi_mutex_try or rtapi_mutex_get.
rtapi_mutex_give and rtapi_mutex_try may be used from user, init/cleanup, and realtime code.
rtapi_mutex_get may not be used from realtime code.
rtapi_mutex_try returns 0 for if the mutex was claimed, and nonzero otherwise.
rtapi_mutex_get and rtapi_mutex_gif have no return value.