PTHREAD_ATTR_GETINHERITSCHED(P) POSIX Programmer's Manual PTHREAD_ATTR_GETINHERITSCHED(P)
pthread_attr_getinheritsched, pthread_attr_setinheritsched - get and set the inheritsched
attribute (REALTIME THREADS)
int pthread_attr_getinheritsched(const pthread_attr_t *restrict attr,
int *restrict inheritsched);
int pthread_attr_setinheritsched(pthread_attr_t *attr,
The pthread_attr_getinheritsched(), and pthread_attr_setinheritsched() functions, respec-
tively, shall get and set the inheritsched attribute in the attr argument.
When the attributes objects are used by pthread_create(), the inheritsched attribute
determines how the other scheduling attributes of the created thread shall be set.
Specifies that the thread scheduling attributes shall be inherited from the creat-
ing thread, and the scheduling attributes in this attr argument shall be ignored.
Specifies that the thread scheduling attributes shall be set to the corresponding
values from this attributes object.
The symbols PTHREAD_INHERIT_SCHED and PTHREAD_EXPLICIT_SCHED are defined in the
The following thread scheduling attributes defined by IEEE Std 1003.1-2001 are affected by
the inheritsched attribute: scheduling policy ( schedpolicy), scheduling parameters (
schedparam), and scheduling contention scope ( contentionscope).
If successful, the pthread_attr_getinheritsched() and pthread_attr_setinheritsched() func-
tions shall return zero; otherwise, an error number shall be returned to indicate the
The pthread_attr_setinheritsched() function may fail if:
EINVAL The value of inheritsched is not valid.
An attempt was made to set the attribute to an unsupported value.
These functions shall not return an error code of [EINTR].
The following sections are informative.
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 run-
pthread_attr_destroy() , pthread_attr_getscope() , pthread_attr_getschedpolicy() ,
pthread_attr_getschedparam() , pthread_create() , the Base Definitions volume of
IEEE Std 1003.1-2001, <pthread.h>, <sched.h>
Portions of this text are reprinted and reproduced in electronic form from IEEE Std
1003.1, 2003 Edition, Standard for Information Technology -- Portable Operating System
Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by
the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the
event of any discrepancy between this version and the original IEEE and The Open Group
Standard, the original IEEE and The Open Group Standard is the referee document. The orig-
inal Standard can be obtained online at http://www.opengroup.org/unix/online.html .
IEEE/The Open Group 2003 PTHREAD_ATTR_GETINHERITSCHED(P)