pthread_attr_setschedpolicy(3) osf1 man page | unix.com

pthread_attr_setschedpolicy(3)				     Library Functions Manual				    pthread_attr_setschedpolicy(3)

NAME
       pthread_attr_setschedpolicy - Changes the scheduling policy attribute of the specified thread attributes object.

LIBRARY
       DECthreads POSIX 1003.1c Library (libpthread.so)

SYNOPSIS
       #include <pthread.h>

       int pthread_attr_setschedpolicy(
			 pthread_attr_t  *attr,
			 int		 policy);

STANDARDS
       Interfaces documented on this reference page conform to industry standards as follows:

       IEEE Std 1003.1c-1995, POSIX System Application Program Interface

PARAMETERS
       Thread attributes object to be modified.  New value for the scheduling policy attribute. Valid values are as follows: SCHED_FIFO, SCHED_RR,
       SCHED_FG_NP (also known as SCHED_OTHER), SCHED_BG_NP SCHED_OTHER is the default value.

DESCRIPTION
       This routine sets the scheduling policy of a thread that is created using the attributes object specified by the attr argument. The default
       value of the scheduling attribute is SCHED_OTHER.

       By default, a created thread inherits the priority of the thread calling pthread_create(3).  To specify a policy using this routine, sched-
       uling inheritance must be disabled at the time the thread  is  created.	 Before  calling  pthread_create(3),  call  pthread_attr_setinher-
       itsched(3) and specify the value PTHREAD_EXPLICIT_SCHED for the inherit argument.

       Never attempt to use scheduling as a mechanism for synchronization.

RETURN VALUES
       If  an  error condition occurs, this routine returns an integer value indicating the type of error.  Possible return values are as follows:
       Successful completion.  The value specified by policy is invalid.

ERRORS
       None

RELATED INFORMATION
       Functions:   pthread_attr_init(3),    pthread_attr_getschedpolicy(3),	pthread_attr_setinheritsched(3),    pthread_attr_setschedparam(3),
       pthread_create(3)

       Manuals: Guide to DECthreads and Programmer's Guide

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														    pthread_attr_setschedpolicy(3)