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Threads Library Functionspthread_attr_getinheritsched(3THR)


NAME

 pthread_attr_getinheritsched, pthread_attr_setinheritsched - get or set inheritsched attribute

SYNOPSIS

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

DESCRIPTION

 

The functions pthread_attr_setinheritsched() and pthread_attr_getinheritsched(), respectively, set and get the inheritsched attribute in the attr argument.

When the attribute objects are used by pthread_create(), the inheritsched attribute determines how the other scheduling attributes of the created thread are to be set:

PTHREAD_INHERIT_SCHED
Specifies that the scheduling policy and associated attributes are to be inherited from the creating thread, and the scheduling attributes in this attr argument are to be ignored.
PTHREAD_EXPLICIT_SCHED
Specifies that the scheduling policy and associated attributes are to be set to the corresponding values from this attribute object.

The symbols PTHREAD_INHERIT_SCHED and PTHREAD_EXPLICIT_SCHED are defined in the header <pthread.h>.

RETURN VALUES

 

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

ERRORS

 

The pthread_attr_setinheritsched() or pthread_attr_getinheritsched() functions may fail if:

EINVAL
attr or inheritsched 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_setschedpolicy(3THR), pthread_attr_setschedparam(3THR), pthread_create(3THR), pthread_setsched_param(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.