Getting the Mutex's Priority Ceiling

pthread_mutexattr_getprioceiling(3C) gets the priority ceiling of a mutex.

pthread_mutex_getprioceiling Syntax

#include <pthread.h> 
int pthread_mutex_getprioceiling(const pthread_mutex_t *restrict mutex, 
          int *restrict prioceiling);

pthread_mutex_getprioceiling() returns the priority ceiling, prioceiling of a mutex.

pthread_mutex_getprioceiling Return Values

On successful completion, pthread_mutex_getprioceiling() returns 0. Any other return value indicates that an error occurred.

If any of the following conditions occurs, pthread_mutexatt_getprioceiling() fails and returns the corresponding value.

If any of the following conditions occurs, pthread_mutex_getprioceiling() might fail and return the corresponding value.

EINVAL

Description:

The value specified by mutex does not refer to a currently existing mutex.

EPERM

Description:

The caller does not have the privilege to perform the operation.