pthread_attr_setinheritsched

       inherit-scheduler attribute in thread attributes object

SYNOPSIS
       #include <pthread.h>

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

       Compile and link with -pthread.

DESCRIPTION
       The pthread_attr_setinheritsched() function sets the  inherit-scheduler
       attribute  of  the  thread attributes object referred to by attr to the
       value  specified  in  inheritsched.   The  inherit-scheduler  attribute
       determines  whether a thread created using the thread attributes object
       attr will inherit its scheduling attributes from the calling thread  or
       whether it will take them from attr.

       The  following scheduling attributes are affected by the inherit-sched-
       uler  attribute:  scheduling  policy  (pthread_attr_setschedpolicy(3)),
       scheduling  priority  (pthread_attr_setschedparam(3)),  and  contention
       scope (pthread_attr_setscope(3)).

       The following values may be specified in inheritsched:

       PTHREAD_INHERIT_SCHED
              Threads  that  are  created  using   attr   inherit   scheduling
              attributes  from  the creating thread; the scheduling attributes
              in attr are ignored.

       PTHREAD_EXPLICIT_SCHED
              Threads that  are  created  using  attr  take  their  scheduling
              attributes from the values specified by the attributes object.

       The  default setting of the inherit-scheduler attribute in a newly ini-
       tialized thread attributes object is PTHREAD_INHERIT_SCHED.

       The  pthread_attr_getinheritsched()   returns   the   inherit-scheduler
       attribute of the thread attributes object attr in the buffer pointed to
       by inheritsched.

RETURN VALUE
       On success, these functions return 0; on error, they return  a  nonzero
       error number.

ERRORS
       pthread_attr_setinheritsched() can fail with the following error:

       EINVAL Invalid value in inheritsched.

       POSIX.1-2001  also  documents  an  optional ENOTSUP error ("attempt was
       made  to  set   the   attribute   to   an   unsupported   value")   for
       thread.   This  bug  does  not occur if either the scheduling policy or
       scheduling  priority  attribute  is  explicitly  set  in   the   thread
       attributes object before calling pthread_create(3).

EXAMPLE
       See pthread_setschedparam(3).

SEE ALSO
       sched_setscheduler(2), pthread_attr_init(3),
       pthread_attr_setschedparam(3), pthread_attr_setschedpolicy(3),
       pthread_attr_setscope(3), pthread_create(3), pthread_setschedparam(3),
       pthread_setschedprio(3), pthreads(7)

COLOPHON
       This page is part of release 3.54 of the Linux man-pages project.  A
       description of the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.



Linux                             2013-04-19   PTHREAD_ATTR_SETINHERITSCHED(3)
Man Pages Copyright Respective Owners. Site Copyright (C) 1994 - 2018 Hurricane Electric. All Rights Reserved.