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pthread_attr_setschedpolicy

PTHREAD_ATTR_SETSCHEDPOLICY(3)				     Linux Programmer's Manual				    PTHREAD_ATTR_SETSCHEDPOLICY(3)

NAME

       pthread_attr_setschedpolicy, pthread_attr_getschedpolicy - set/get scheduling policy attribute in thread attributes object

SYNOPSIS

       #include <pthread.h>

       int pthread_attr_setschedpolicy(pthread_attr_t *attr, int policy);
       int pthread_attr_getschedpolicy(const pthread_attr_t *attr, int *policy);

       Compile and link with -pthread.

DESCRIPTION

       The  pthread_attr_setschedpolicy() 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 SCHED_FIFO, SCHED_RR, and SCHED_OTHER, with the semantics described in sched(7).

       The pthread_attr_getschedpolicy() 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 pthread_attr_setschedpolicy() to have effect when calling pthread_create(3), the caller must use
       pthread_attr_setinheritsched(3) to set the inherit-scheduler attribute of the attributes object attr to PTHREAD_EXPLICIT_SCHED.

RETURN VALUE

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

ERRORS

       pthread_attr_setschedpolicy() can fail with the following error:

       EINVAL Invalid value in policy.

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

ATTRIBUTES

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

       +-------------------------------+---------------+---------+
       |Interface		       | Attribute     | Value	 |
       +-------------------------------+---------------+---------+
       |pthread_attr_setschedpolicy(), | Thread safety | MT-Safe |
       |pthread_attr_getschedpolicy()  |	       |	 |
       +-------------------------------+---------------+---------+
CONFORMING TO

       POSIX.1-2001, POSIX.1-2008.

EXAMPLE

       See pthread_setschedparam(3).

SEE ALSO

       pthread_attr_init(3), pthread_attr_setinheritsched(3), pthread_attr_setschedparam(3), pthread_create(3), pthread_setschedparam(3),
       pthread_setschedprio(3), pthreads(7), sched(7)

COLOPHON

       This page is part of release 4.15 of the Linux man-pages project.  A description of the project, information about reporting bugs, and the
       latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.

Linux								    2017-09-15					    PTHREAD_ATTR_SETSCHEDPOLICY(3)

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