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pthread_barrierattr_destroy, pthread_barrierattr_init - destroy and initialize barrier attributes object

cc -mt [ flag... ] file... [ library... ]
#include <pthread.h>

int pthread_barrierattr_destroy(pthread_barrierattr_t *attr);

int pthread_barrierattr_init(pthread_barrierattr_t *attr);

The pthread_barrierattr_destroy() function destroys a barrier attributes object. A destroyed attr attributes object can be reinitialized using pthread_barrierattr_init(). The results of otherwise referencing the object after it has been destroyed are undefined. An implementation can cause pthread_barrierattr_destroy() to set the object referenced by attr to an invalid value.

The pthread_barrierattr_init() function initializes a barrier attributes object attr with the default value for all of the attributes defined by the implementation.

Results are undefined if pthread_barrierattr_init() is called specifying an already initialized attr attributes object.

After a barrier attributes object has been used to initialize one or more barriers, any function affecting the attributes object (including destruction) does not affect any previously initialized barrier.

Upon successful completion, the pthread_barrierattr_destroy() and pthread_barrierattr_init() functions returns 0. Otherwise, an error number is returned to indicate the error.

The pthread_barrierattr_init() function will fail if: ENOMEM

The pthread_barrierattr_destroy() function may fail if: EINVAL

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE ATTRIBUTE VALUE

Interface Stability Standard

MT-Level MT-Safe

pthread_barrierattr_getpshared(3C), attributes(5), standards(5)