PTHREAD_ATTR_GET_NP(3) | Library Functions Manual | PTHREAD_ATTR_GET_NP(3) |
pthread_attr_get_np
,
pthread_getattr_np
—
#include <pthread.h>
int
pthread_attr_get_np
(pthread_t
thread, pthread_attr_t
*attr);
int
pthread_getattr_np
(pthread_t
thread, pthread_attr_t
*attr);
pthread_attr_get_np
() and
pthread_getattr_np
() functions can be used to retrieve
attributes of a running thread. The result is stored to
attr.
For pthread_attr_get_np
()
attr should be initialized prior to the call by using
pthread_attr_init(3).
pthread_getattr_np
() does this automatically.
For both functions attr should be freed when it is not in use anymore with pthread_attr_destroy(3).
Most fields of attr are the same ones provided during thread creation time as a parameter to pthread_create(3). The exceptions include:
pthread_attr_get_np
()
will always return the thread's real stack address and size, regardless of
the values in the original attributes structure.The returned pthread_attr_t structure is
supposed to be used in conjunction with the
pthread_attr_get*
() functions to retrieve individual
values from the structure. When the returned attr is
no longer needed, it should be destroyed by using
pthread_attr_destroy(3).
pthread_attr_get_np
() and
pthread_getattr_np
() return 0. Otherwise an error
number is returned to indicate the error.
pthread_attr_get_np
() and
pthread_getattr_np
() functions are non-standard
extensions.
pthread_attr_get_np
() and
pthread_getattr_np
() functions will fail if:
August 6, 2010 | NetBSD 9.2 |