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Threads Library Functionspthread_attr_getschedpolicy(3THR)


NAME

 pthread_attr_getschedpolicy, pthread_attr_setschedpolicy - get or set schedpolicy attribute

SYNOPSIS

 
cc -mt [ flag... ] file... -lpthread [ -lrt library... ]
#include <pthread.h>
int pthread_attr_setschedpolicy(pthread_attr_t *attr, int policy);
 int pthread_attr_getschedpolicy(const pthread_attr_t *attr, int *policy);

DESCRIPTION

 

The functions pthread_attr_setschedpolicy() and pthread_attr_getschedpolicy(), respectively, set and get the schedpolicy attribute in the attr argument.

The supported values of policy include SCHED_FIFO, SCHED_RR and SCHED_OTHER, which are defined by the header <sched.h>. When threads executing with the scheduling policy SCHED_FIFO or SCHED_RR are waiting on a mutex, they acquire the mutex in priority order when the mutex is unlocked.

RETURN VALUES

 

If successful, the pthread_attr_setschedpolicy() and pthread_attr_getschedpolicy() functions return 0. Otherwise, an error number is returned to indicate the error.

ERRORS

 

The pthread_attr_setschedpolicy() or pthread_attr_getschedpolicy() function may fail if:

EINVAL
attr or policy is invalid.

USAGE

 

After these attributes have been set, a thread can be created with the specified attributes using pthread_create(). Using these routines does not affect the current running thread.

ATTRIBUTES

 

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPEATTRIBUTE VALUE
MT-LevelMT-Safe

SEE ALSO

 

pthread_attr_init(3THR), pthread_attr_setscope(3THR), pthread_attr_setinheritsched(3THR), pthread_attr_setschedparam(3THR), pthread_create(3THR), pthread_setschedparam(3THR), attributes(5), standards(5)


SunOS 5.9Go To TopLast Changed 28 Apr 1998

 
      
      
Copyright 2002 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.