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Man Pages


Manual Reference Pages  -  PTHREAD_GETSCHEDPARAM (3)

NAME

pthread_setschedparam, pthread_getschedparam - thread scheduling parameter manipulation

CONTENTS

Library
Synopsis
Description
Return Values
Errors
See Also
Standards

LIBRARY


.Lb libpthread

SYNOPSIS


.In pthread.h int pthread_setschedparam pthread_t thread int policy const struct sched_param *param int pthread_getschedparam pthread_t thread int *policy struct sched_param *param

DESCRIPTION

The pthread_setschedparam and pthread_getschedparam functions set and get the scheduling parameters of individual threads. The scheduling policy for a thread can either be SCHED_FIFO (first in, first out), SCHED_RR (round-robin), or SCHED_OTHER (timesharing). Valid thread priorities (accessed via param->sched_priority) must be within the range returned by the sched_get_priority_min(2) and sched_get_priority_max(2) system calls.

RETURN VALUES

If successful, these functions return 0. Otherwise, an error number is returned to indicate the error.

ERRORS

The pthread_setschedparam function will fail if:
[EINVAL]
  Invalid value for policy.
[ENOTSUP]
  Invalid value for scheduling parameters.
[ESRCH]
  Non-existent thread thread.

The pthread_getschedparam function will fail if:
[ESRCH]
  Non-existent thread thread.

SEE ALSO

sched_get_priority_max(2), sched_get_priority_min(2)

STANDARDS

The pthread_setschedparam and pthread_getschedparam functions conform to -susv2.
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