Originální popis anglicky:
pthread_attr_getinheritsched, pthread_attr_setinheritsched - get and set the
inheritsched attribute (
REALTIME THREADS)
Návod, kniha: POSIX Programmer's Manual
#include <pthread.h>
int pthread_attr_getinheritsched(const pthread_attr_t *restrict
attr,
int *restrict
inheritsched );
int pthread_attr_setinheritsched(pthread_attr_t *
attr,
int
inheritsched);
The
pthread_attr_getinheritsched(), and
pthread_attr_setinheritsched() functions, respectively, 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.
- PTHREAD_INHERIT_SCHED
-
Specifies that the thread scheduling attributes shall be inherited from the
creating thread, and the scheduling attributes in this attr
argument shall be ignored.
- PTHREAD_EXPLICIT_SCHED
-
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
<pthread.h> header.
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() functions shall return zero; otherwise,
an error number shall be returned to indicate the error.
The
pthread_attr_setinheritsched() function may fail if:
- EINVAL
- The value of inheritsched is not valid.
- ENOTSUP
- 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.
None.
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.
None.
None.
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 original
Standard can be obtained online at http://www.opengroup.org/unix/online.html
.
