The pthread_rwlockattr_init() function is used to initialize a read/write lock attributes object.
The pthread_rwlockattr_destroy() function is used to destroy a read/write lock attribute object previously created with pthread_rwlockattr_init().
RETURN VALUES
If successful, the pthread_rwlockattr_init() and pthread_rwlockattr_destroy() functions return zero. Otherwise an error number will be returned to indicate the error.
ERRORS
pthread_rwlockattr_init() shall fail if:
[ENOMEM]
Insufficient memory exists to initialize the read/write lock attributes object.
pthread_rwlockattr_init() and pthread_rwlockattr_destroy() may fail if: