The functions pthread_attr_setinheritsched() and pthread_attr_getinheritsched(), respectively, set and get the inheritsched attribute in the attr argument.

When the attribute objects are used by pthread_create(), the inheritsched attribute determines how the other scheduling attributes of the created thread are to be set:

PTHREAD_INHERIT_SCHED

Specifies that the scheduling policy and associated attributes are to be inherited from the creating thread, and the scheduling attributes in this attr argument are to be ignored.

PTHREAD_EXPLICIT_SCHED

Specifies that the scheduling policy and associated attributes are to be set to the corresponding values from this attribute object.

The symbols PTHREAD_INHERIT_SCHED and PTHREAD_EXPLICIT_SCHED are defined in the header <pthread.h>.

If successful, the pthread_attr_setinheritsched() and pthread_attr_getinheritsched() functions return 0. Otherwise, an error number is returned to indicate the error.

The pthread_attr_setinheritsched() or pthread_attr_getinheritsched() functions may fail if:

EINVAL

attr or inheritsched is invalid.

After these attributes have been set, a thread can be created with the specified attributes using pthread_create(). Using these routines does not affect the current running thread.

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

pthread_attr_init(3THR), pthread_attr_setscope(3THR), pthread_attr_setschedpolicy(3THR), pthread_attr_setschedparam(3THR), pthread_create(3THR), pthread_setsched_param(3thr), attributes(5), standards(5)