pthread_schedparam(3)
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PTHREAD_SCHEDPARAM(3) NetBSD Library Functions Manual PTHREAD_SCHEDPARAM(3)
NAME
pthread_setschedparam, pthread_getschedparam -- thread scheduling parame-
ter manipulation
LIBRARY
POSIX Threads Library (libpthread, -lpthread)
SYNOPSIS
#include <pthread.h>
int
pthread_setschedparam(pthread_t thread, int policy,
const struct sched_param *param);
int
pthread_getschedparam(pthread_t thread, int * restrict policy,
struct sched_param * restrict param);
DESCRIPTION
The pthread_setschedparam() and pthread_getschedparam() functions set and
get the scheduling parameters of individual threads. The scheduling pol-
icy for a thread can either be SCHED_FIFO (first in, first out), SCHED_RR
(round-robin), or SCHED_OTHER (system default). The thread priority
(accessed via param->sched_priority) must be at least
PTHREAD_MIN_PRIORITY and no more than PTHREAD_MAX_PRIORITY.
RETURN VALUES
If successful, these functions return 0. Otherwise, an error number is
returned to indicate the error.
ERRORS
pthread_setschedparam() may fail if:
[EINVAL] The value specified by policy is invalid.
[ENOTSUP] Invalid value for scheduling parameters.
[ESRCH] Non-existent thread thread.
pthread_getschedparam() may fail if:
[ESRCH] Non-existent thread thread.
STANDARDS
pthread_setschedparam() and pthread_getschedparam() conform to ISO/IEC
9945-1:1996 (``POSIX.1'').
NetBSD 5.1 January 30, 2003 NetBSD 5.1
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