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

NAME         top

       pthread_attr_setschedparam,  pthread_attr_getschedparam  -  set/get scheduling
       parameter attributes in thread attributes object

SYNOPSIS         top

       #include <pthread.h>

       int pthread_attr_setschedparam(pthread_attr_t *attr,
                                      const struct sched_param *param);
       int pthread_attr_getschedparam(pthread_attr_t *attr,
                                      struct sched_param *param);

       Compile and link with -pthread.

DESCRIPTION         top

       The pthread_attr_setschedparam() function sets the scheduling parameter
       attributes of the thread attributes object referred to by attr to the values
       specified in the buffer pointed to by param.  These attributes determine the
       scheduling parameters of a thread created using the thread attributes object
       attr.

       The pthread_attr_getschedparam() returns the scheduling parameter attributes
       of the thread attributes object attr in the buffer pointed to by param.

       Scheduling parameters are maintained in the following structure:

           struct sched_param {
               int sched_priority;     /* Scheduling priority */
           };

       As can be seen, only one scheduling parameter is supported.  For details of
       the permitted ranges for scheduling priorities in each scheduling policy, see
       sched_setscheduler(2).

RETURN VALUE         top

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

ERRORS         top

       POSIX.1 documents EINVAL and ENOTSUP errors for pthread_attr_setschedparam().
       On Linux these functions always succeed (but portable and future-proof
       applications should nevertheless handle a possible error return).

CONFORMING TO         top

       POSIX.1-2001.

EXAMPLE         top

       See pthread_setschedparam(3).

NOTES         top

       See pthread_attr_setschedpolicy(3) for a list of the thread scheduling
       policies supported on Linux.

SEE ALSO         top

       sched_get_priority_min(2), sched_setscheduler(2), pthread_attr_init(3),
       pthread_attr_setinheritsched(3), pthread_attr_setschedpolicy(3),
       pthread_create(3), pthread_setschedparam(3), pthread_setschedprio(3),
       pthreads(7)

COLOPHON         top

       This page is part of release 3.32 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                                 2010-02-03        PTHREAD_ATTR_SETSCHEDPARAM(3)

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