PTHREADATTRSETSCHEDPOLICYLinux Programmer's MaPTHREADATTRSETSCHEDPOLICY(3)

NAME
       pthreadattrsetschedpolicy,   pthreadattrgetschedpolicy   -  set/get
       scheduling policy attribute in thread attributes object

SYNOPSIS
       #include 

       int pthreadattrsetschedpolicy(pthreadattrt *attr, int policy);
       int pthreadattrgetschedpolicy(pthreadattrt *attr, int *policy);

       Compile and link with -pthread.

DESCRIPTION
       The pthreadattrsetschedpolicy() function sets the  scheduling  policy
       attribute  of  the  thread attributes object referred to by attr to the
       value specified in policy.  This attribute  determines  the  scheduling
       policy of a thread created using the thread attributes object attr.

       The   supported   values  for  policy  are  SCHEDFIFO,  SCHEDRR,  and
       SCHEDOTHER, with the semantics described in schedsetscheduler(2).

       The  pthreadattrgetschedpolicy()  returns   the   scheduling   policy
       attribute of the thread attributes object attr in the buffer pointed to
       by policy.

       In order for the policy setting made  by  pthreadattrsetschedpolicy()
       to  have  effect  when  calling  pthreadcreate(3), the caller must use
       pthreadattrsetinheritsched(3) to set the inherit-scheduler  attribute
       of the attributes object attr to PTHREADEXPLICITSCHED.

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

ERRORS
       pthreadattrsetschedpolicy() can fail with the following error:

       EINVAL Invalid value in policy.

       POSIX.1-2001 also documents an optional  ENOTSUP  error  ("attempt  was
       made   to   set   the   attribute   to   an   unsupported  value")  for
       pthreadattrsetschedpolicy().

ATTRIBUTES
       For  an  explanation  of  the  terms  used   in   this   section,   see
       attributes(7).

       ┌───────────────────────────────┬───────────────┬─────────┐
       │Interface                      │ Attribute     │ Value   │
       ├───────────────────────────────┼───────────────┼─────────┤
       │pthreadattrsetschedpolicy(), │ Thread safety │ MT-Safe │
       │pthreadattrgetschedpolicy()  │               │         │
       └───────────────────────────────┴───────────────┴─────────┘
CONFORMING TO
       POSIX.1-2001.

EXAMPLE
       See pthreadsetschedparam(3).

SEE ALSO
       schedsetscheduler(2), pthreadattrinit(3),
       pthreadattrsetinheritsched(3), pthreadattrsetschedparam(3),
       pthreadcreate(3), pthreadsetschedparam(3), pthreadsetschedprio(3),
       pthreads(7)

COLOPHON
       This page is part of release 3.53 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                             2013-06-21    PTHREADATTRSETSCHEDPOLICY(3)