pthread_attr_getinheritsched(2)          pthread_attr_getinheritsched(2)

  pthread_attr_getinheritsched()

  NAME

    pthread_attr_getinheritsched(), pthread_attr_setinheritsched() - get or
    set the thread scheduling-inheritance attribute

  SYNOPSIS

    #include 

    int pthread_attr_getinheritsched(const pthread_attr_t *attr, int
    *inheritsched);
    int pthread_attr_setinheritsched(pthread_attr_t *attr, int inheritsched);

  DESCRIPTION

    The pthread_attr_setinheritsched(2) function sets the scheduling-
    inheritance attribute in the thread attributes object referenced by attr
    using the value of the inheritsched argument. The scheduling-inheritance
    attribute determines how the other scheduling attributes of the thread
    created using the attr object are set. When the inheritsched argument is
    set to PTHREAD_INHERIT_SCHED, the thread scheduling attributes are
    inherited from the parent thread, and the scheduling attributes in the
    attr object are ignored. If the inheritsched argument is set to
    PTHREAD_EXPLICIT_SCHED, the scheduling attributes of the created thread
    are set according to the settings in the attr object used to create the
    thread.

    The following are the thread scheduling attributes controlled by the
    scheduling-inheritance attribute:

    *     schedpolicy (scheduling policy)
    *     schedparam (scheduling parameters)
    *     contentionscope (scheduling contention scope)

    After the attributes have been set in the thread attributes object
    referenced by attr, the pthread_create(2) function can be called to create
    a new thread with the specified attributes. This function does not affect
    the current running thread.

    The pthread_attr_getinheritsched(2) function retrieves the cheduling-
    inheritance attribute in the attr thread attributes object, storing the
    value in the location referenced by the inheritsched argument.

  RETURN VALUES

    On success, both functions return 0; otherwise, they return an error
    number.

  ERRORS

    The pthread_attr_setinheritsched() function can fail for the following
    reasons:

    [EINVAL]
        The inheritsched argument is not PTHREAD_INHERIT_SCHED or
        PTHREAD_EXPLICIT_SCHED.

    [ENOTSUP]
        An attempt was made to set the cheduling-inheritance attribute to to
        an unsupported value.

    Neither function returns [EINTR].

  SEE ALSO

    pthread_attr_destroy(2)

    pthread_attr_getschedpolicy(2)

    pthread_attr_getschedparam(2)

    pthread_attr_getscope(2)

    pthread_create(2)

  USAGE NOTES

    All of these functions are thread safe.

    None of these functions are async-signal safe.