pthread_attr_setschedparam Return Values

pthread_attr_setschedparam() returns zero after completing successfully. Any other return value indicates that an error occurred. If the following conditions occur, the function fails and returns the corresponding value.

EINVAL

Description:

The value of param is NULL or tattr is invalid.

You can manage pthreads priority in either of two ways:

• You can set the priority attribute before creating a child thread

• You can change the priority of the parent thread and then change the priority back